Results 61 to 70 of about 303,562 (310)

The Preparation and Performance of SPE Packing of Bonded Ligand on the Surface of Nanometer Titanium Dioxide

Yankuang ceshi, 2018
At present, the solid phase extraction packing of organic ligand/nano inorganic composite material is used to separate and enrich metal ions, which has become a hot research topic in analytical chemistry.
SHEN Shu-chang, LENG Mo-han, PENG Cheng, Lü Wei-chao   +3 more
doaj   +1 more source

Microsphere molecularly imprinted solid-phase extraction for diazepam analysis using itaconic acid as a monomer in propanol

Open Chemistry, 2021
Diazepam (DZP) is a benzodiazepine drug used as an anti-drug and sedative. It is often misused to induce or create euphoria in combination with other drugs (high or fly sensation) or administered alone.
Hasanah Aliya Nur, Susanti Ike, Marcellino Marcellino, Maranata Gabriella Josephine, Saputri Febrina Amelia, Pratiwi Rimadani   +5 more
doaj   +1 more source

Pre‐analytical optimization of cell‐free DNA and extracellular vesicle‐derived DNA for mutation detection in liquid biopsies

Molecular Oncology, EarlyView.
Pre‐analytical handling critically determines liquid biopsy performance. This study defines practical best‐practice conditions for cell‐free DNA (cfDNA) and extracellular vesicle–derived DNA (evDNA), showing how processing time, storage conditions, tube type, and plasma input volume affect DNA integrity and mutation detection.
Jonas Dohmen, Lucrezia De Santis, Bret M. Stephens, Vincent Bernard, Jörg C. Kalff, Lara Braun, Phillipp Leyendecker, Johannes Röttgen, Daniel Weissinger, Anirban Maitra, Paola A. Guerrero, Alexander Semaan   +11 more
wiley   +1 more source

Cortiça: uma nova abordagem como fase extratora para microextração em fase sólida e microextração em barra adsortiva [PDF]

, 2015
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2015.Neste estudo foi proposto pela primeira vez o uso da cortiça como fase extratora para duas ...
Dias, Adriana Neves
core  

OligoHydrogelArray (OHA) for Parallelized Solid‐Phase Extraction of Oligonucleotides

Advanced Materials Interfaces, 2023
Immobilization of oligonucleotides on solid surfaces is an important step in many experimental workflows in biology, such as gene expression analysis, genotyping, and drug discoveries.
Michelle J. Iwohn, Maximilian Seifermann, Patrick Reiser, Julius Höpfner, Razan El Khaled El Faraj, Stefan Heißler, Anna A. Popova, Pavel A. Levkin   +7 more
doaj   +1 more source

Engineered extracellular vesicles enriched with the miR‐214/199a cluster enhance the efficacy of chemotherapy in ovarian cancer

Molecular Oncology, EarlyView.
Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang, Ayesha Alvero, Yi Qin, Mingjin Wang, Alexandra Fox, Yanfeng Li, Michael Millman, Amy Kemper, Gil Mor, Xian Shuang Liu, Michael Chopp, Zheng Gang Zhang, Yi Zhang   +12 more
wiley   +1 more source

Considerações sobre o preparo de amostras contendo micropoluentes estrogênicos

Química Nova, 2012
In this work, the materials used in the recovery of estrogens from aqueous matrices by filtration and solid phase extraction were evaluated. The results showed that glass-fiber filters allow a recovery and repeatability compatible with this type of ...
Marcus Vinicius de Liz, Noemi Nagata, Patricio Peralta-Zamora   +2 more
doaj   +1 more source

IMPDH inhibition enhances cytarabine efficacy in SAMHD1‐expressing leukaemia cells via guanine nucleotide depletion

Molecular Oncology, EarlyView.
Cytarabine is a key therapy for acute myeloid leukaemia (AML), but its efficacy is limited by the dNTPase SAMHD1, which hydrolyses its active metabolite. Screening nucleotide biosynthesis inhibitors revealed that IMPDH inhibitors selectively sensitise SAMHD1‐proficient AML cells to cytarabine.
Miriam Yagüe‐Capilla, Christopher Dirks, Caroline Eiden, Sonja K. Fesenmayer, Femke M. Hormann, Yolande Klootsema, Ingrid Lilienthal, Si Min Zhang, Nikolas Herold, Sean G. Rudd   +9 more
wiley   +1 more source

Otimização e aplicação da microextração em fase sólida com e sem refrigeração interna em amostras de ervas medicinais e água de rio [PDF]

, 2013
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Quimica, Florianópolis, 2013A microextração em fase sólida no modo de extração headspace (HS-SPME) e a microextração ...
Merib, Josias de Oliveira
core  

Novos sorventes baseados em poli (metiloctilsiloxano) sobre sílica para uso em extração em fase sólida New sorbents based on poly(methyloctylsiloxane) immobilized on silica for use in solid-phase extraction

Química Nova, 2006
This paper presents an easy and practical procedure to obtain silica-based C-8 type sorbents for use in solid-phase extraction. The materials are prepared by depositing poly(methyloctylsiloxane), PMOS, on the silica support.
Sonia C. N. Queiroz, Lúcio F. C. Melo, Isabel C. S. F. Jardim   +2 more
doaj   +1 more source