Results 31 to 40 of about 1,955,453 (343)

Biomassa em aula prática de Química Orgânica Verde: cravo-da-índia como fonte simultânea de óleo essencial e de furfural

Química Nova, 2012
This work presents an optimized integrated experiment for isolation of clove bud essential oil, rich in eugenol, and subsequent utilization of the solid residue for furfural synthesis.
Silvio Cunha, Danilo Machado Lustosa, Nathan Dias Conceição, Miguel Fascio, Vinícius Magalhães   +4 more
doaj   +1 more source

Ab initio coordination chemistry for nickel chelation motifs. [PDF]

PLoS ONE, 2015
Chelation therapy is one of the most appreciated methods in the treatment of metal induced disease predisposition. Coordination chemistry provides a way to understand metal association in biological structures.
R Jesu Jaya Sudan, J Lesitha Jeeva Kumari, C Sudandiradoss   +2 more
doaj   +1 more source

Dual targeting of the class V lanthipeptide antibiotic cacaoidin

iScience, 2023
Summary: Antibiotic resistance is reaching alarming levels, demanding for the discovery and development of antibiotics with novel chemistry and mechanisms of action.
Julia P. Deisinger, Melina Arts, Ioli Kotsogianni, Jan-Samuel Puls, Fabian Grein, Francisco Javier Ortiz-López, Nathaniel I. Martin, Anna Müller, Olga Genilloud, Tanja Schneider   +9 more
doaj   +1 more source

QuEChERS Method Followed by Solid Phase Extraction Method for Gas Chromatographic-Mass Spectrometric Determination of Polycyclic Aromatic Hydrocarbons in Fish

International Journal of Analytical Chemistry, 2015
A gas chromatography equipped with mass spectrometer (GCMS) method was developed and validated for determination of 16 polycyclic aromatic hydrocarbons (PAHs) in fish using modified quick, easy, cheap, effective, rugged, and safe (QuEChERS) method for ...
Mona Khorshid, Eglal R. Souaya, Ahmed H. Hamzawy, Moustapha N. Mohammed   +3 more
doaj   +1 more source

De resíduo a insumo: a construção do caminho para uma química mais limpa através de um projeto de ensino From residue to input: building a road to clean chemistry through an educational project

Química Nova, 2008
The discussion among teachers, students, and technicians about the destination of residues from chemistry laboratories led to a research project whose results were incorporated into a course in its daily practices.
Regina Felisberto, Lucio Olimpio Vieira, Alessandra Couto, Roselena Schuh, Caroline Thiessen Albino, Daniela Batistela Libardi, Ana Cristina Borba da Cunha   +6 more
doaj   +1 more source

Synthesis and Anticancer Activity of Glucosylated Podophyllotoxin Derivatives Linked via 4β-Triazole Rings

Molecules, 2013
A series of 4β-triazole-linked glucose podophyllotoxin conjugates have been designed and synthesized by employing a click chemistry approach. All the compounds were evaluated for their anticancer activity against a panel of five human cancer cell lines ...
Cheng-Ting Zi, Feng-Qing Xu, Gen-Tao Li, Yan Li, Zhong-Tao Ding, Jun Zhou, Zi-Hua Jiang, Jiang-Miao Hu   +7 more
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

Pharmaceuticals in Food and Water: Monitoring, Analytical Methods of Detection and Quantification, and Removal Strategies

Separations
Pharmaceuticals, classified as emerging pollutants, are extensively applied in both human and veterinary medicine to treat various diseases. Their widespread application has led to their occurrence in water, soil, sediments, and living organisms. Even at
Ines Varga, Nina Bilandžić, Silvia Morović, Krešimir Košutić   +3 more
doaj   +1 more source

Novel polymer coupling chemistry based upon latent cysteine-like residues and thiazolidine chemistry

Polymer Chemistry, 2010
Chain end functional polymers were prepared via reversible addition–fragmentation transfer (RAFT) polymerization techniques that were further chain extended with acrylonitrile. Under reducing conditions, latent cysteine-like residues were exposed at the chain ends.
Carlson, Jospeh S., Hill, Megan R., Young, Taiga, Costanzo, Philip   +3 more
openaire   +3 more sources