Results 51 to 60 of about 20,829,679 (312)

Microplastics Pollution in Chile: Current Situation and Future Prospects

Frontiers in Environmental Science, 2021
Millions of tons of plastics enter wild habitats, especially the oceans, every year. Despite extensive efforts, this amount is predicted to increase over in the near future, leading to a catastrophic damage to the environment.
Esteban Paredes-Osses, Esteban Paredes-Osses, Karla Pozo, Karla Pozo, Andrés Opazo-Capurro, Andrés Opazo-Capurro, Paulina Bahamonde, Jaime R. Cabrera-Pardo, Jaime R. Cabrera-Pardo   +8 more
doaj   +1 more source

Organoids in pediatric cancer research

FEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Short-cut nitrogen removal from high-strength ammonia wastewater in a sequencing batch biofilm reactor: roles of NO and its production mechanism

Frontiers in Microbiology
Nitric oxide (NO) is a key intermediate in the biological nitrogen removal process. However, its role and production mechanism is still not fully understood.
Junkai Zhao, Junkai Zhao, Ju Zhang, Ju Zhang, Heng Yu, Heng Yu, Wenjuan Yang, Wenjuan Yang, Jianqiang Zhao, Jianqiang Zhao, Shuhan Lei, Jie Yang   +11 more
doaj   +1 more source

Evaluation of Chemical Constituents of Litchi Pericarp Extracts and Its Antioxidant Activity in Mice

Foods, 2022
Litchi pericarp is the main byproduct of litchi processing and contains several polyphenols. However, the chemical constituents and the antioxidant effect in litchi pericarp extracts (LPE) have been rarely studied. The result of the quantitative analyses
Ziming Yang, Li Zhang, Yuan-Hang Wu, Dian-Peng Li, Wei Li   +4 more
doaj   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Effective Chemical Processes in Porous Media [PDF]

Mathematical Models and Methods in Applied Sciences, 2003
In the book by Hornung, Chap. 6, the author proposes a homogenization strategy for the effective behavior of some chemical processes involving adsorption and reactions arising in porous media. Rigorous proofs of the convergence results are given in the case of linear adsorption rates and linear chemical reactions. The author leaves as an open question
Conca Rosende, Carlos, Timofte, C., Díaz, J. I.   +2 more
openaire   +2 more sources

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Frequency-Range-Specific Hand–Arm Vibration Exposure and the Risk of Musculoskeletal Disorders of the Upper Extremities: The German Hand–Arm Vibration Study

Vibration
To quantify the effect of frequency-range-specific hand–arm vibration (FRS-HAV) exposure on the risk of musculoskeletal disorders of the upper limb (UMSDs), we performed an analysis among the study sample of the German Hand–Arm Vibration Study. In total,
Yi Sun, Frank Bochmann, Winfried Eckert, Uwe Nigmann, Christian van den Berg, Uwe Kaulbars, Nastaran Raffler   +6 more
doaj   +1 more source

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

FEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes, Guilherme M. Azevedo, Amanda P. Barcellos, Diana Bahia   +3 more
wiley   +1 more source

DIRIGINDO O OLHAR PARA O EFEITO ESTUFA NOS LIVROS DIDÁTICOS DE ENSINO MÉDIO: É SIMPLES ENTENDER ESSE FENÔMENO?

Ensaio Pesquisa em Educação em Ciências
Os livros didáticos, pela disponibilidade e acesso, são uma fonte importante de pesquisa para o professor de Ensino Médio, ao selecionar conteúdos e preparar suas aulas.
Anderson Cezar Lobato, Cristina Neres da Silva, Rochel Montero Lago, Zenilda de Lourdes Cardeal, Ana Luiza de Quadros   +4 more
doaj   +1 more source