Results 51 to 60 of about 106,957 (303)

Mesoporous niobium oxide for dehydration of D-xylose into furfural [PDF]

, 2013
Se ha demostrado que el óxido de niobio mesoporoso es un catalizador eficaz para la deshidratación de D-xilosa a furfural, alcanzando una conversión del 92% y un rendimiento de furfural 49,3% a 170º C y 90 minutos.
García Sancho, Cristina, Jiménez López, Antonio, Maireles-Torres, Pedro Jesús, Merida-Robles, Josefa Maria, Moreno-Tost, Ramon, Rubio Caballero, Juan Miguel, Santamaria-Gonzalez, Jose   +6 more
core  

Identification of serum protein biomarkers for pre‐cancerous lesions associated with pancreatic ductal adenocarcinoma

Molecular Oncology, EarlyView.
This work identified serum proteins associated with pancreatic epithelial neoplasms (PanINs) and early‐stage PDAC. Proteomics screens assessed genetically engineered mice with abundant PanINs, KPC mice (Lox‐STOP‐Lox‐KrasG12D/+ Lox‐STOP‐Lox‐Trp53R172H/+ Pdx1‐Cre) before PDAC development and also early‐stage PDAC patients (n = 31), compared to benign ...
Hannah Mearns, Jaclyn S. Long, Sergio Lilla, Kelly Hodge, Marcus J. G. W. Ladds, Colin Nixon, Paula Fernández‐Palanca, Sara Zanivan, Pilar Acedo, Stephen P. Pereira, Kevin M. Ryan   +10 more
wiley   +1 more source

Acid-Catalyzed Conversion of Cellulose Into Levulinic Acid With Biphasic Solvent System

Frontiers in Plant Science, 2021
In this work, acid-catalyzed conversion of cellulose into levulinic acid in a biphasic solvent system was developed. Compared to a series of catalysts investigated in this study, the Amberlyst-15 as a more efficient acid catalyst was used in the ...
Changyue Ma, Changyue Ma, Bo Cai, Le Zhang, Junfeng Feng, Junfeng Feng, Hui Pan, Hui Pan   +7 more
doaj   +1 more source

Sulfonated sporopollenin as an efficient and recyclable heterogeneous catalyst for dehydration of D-xylose and xylan into furfural [PDF]

, 2016
The natural acidity of sporopollenin, the biopolymer coating the outer walls of pollen grains, was enhanced by the sulfonation of its surface. Modified sporopollenin displaying sulfonic acid groups has been prepared, characterized by elemental analysis ...
Boa, Andrew N., Ceballos, Claire, Delbecq, Frederic, Diego Taboada, Alberto, Huang, Youkui, Len, Christophe, Len, Thomas, Mackenzie, Grahame, Wang, Yantao   +8 more
core   +2 more sources

Dual PI3K/AKT and CDK4/6 inhibition reveals selective sensitivity in an SHH medulloblastoma stem cell model

Molecular Oncology, EarlyView.
Targeted therapy was evaluated in SHH medulloblastoma using neuroepithelial stem cell (NES) and tumor‐derived NES‐like (tNES) models in 2D monolayers and 3D spheroids. PI3K, AKT, and CDK4/6 inhibitors had minimal effects in NES but markedly reduced viability and growth and induced apoptosis in tNES cells, revealing distinct therapeutic vulnerabilities.
Monika Lukoseviciute, Madeleine Birgersson, Paolo Ceriani, Margareta Wilhelm, Ourania N Kostopoulou   +4 more
wiley   +1 more source

Producing fuel alcohol by extractive distillation: Simulating the process with glycerol

Ingeniería e Investigación, 2006
Downstream separation processes in biotechnology form part of the stages having most impact on a product’s final cost. The tendency throughout the world today is to replace fossil fuels with those having a renewable origin such as ethanol; this, in turn,
Ana María Uyazán, Iván Dario Gil, Jaime Aguilar, Gerardo Rodríguez Niño, Luis A Caicedo Mesa   +4 more
doaj  

Deciphering transcriptional plasticity in pancreatic ductal adenocarcinoma reveals alterations in sensory neuron innervation

Molecular Oncology, EarlyView.
Pancreatic sensory neurons innervating healthy and PDAC tissue were retrogradely labeled and profiled by single‐cell RNA sequencing. Tumor‐associated innervation showed a dominant neurofilament‐positive subtype, altered mitochondrial gene signatures, and reduced non‐peptidergic neurons.
Elena Genova, Michele Montrone, Uday Rangaswamy, Francesco Diversi, Irene Schiavo, Denise Ferrarini, Roberta Di Florio, Irene Longo, Michele Coscia, Nicola Zamboni, Giorgia Demontis, Lisa Veghini, Vincenzo Corbo, Remo Sanges, Paul Heppenstall   +14 more
wiley   +1 more source

Transformation of fructose into 5-hydroxymethylfurfuraldehyde (HMF) via homogeneous Bro¨nsted acid-catalyzed dehydration under gamma irradiation

Results in Chemistry
One important renewable platform compound for fuel production and chemical industries is 5-hydroxymethylfurfural (HMF), which can be produced from the dehydration of fructose.
Nicha Prigyai, Nurulsafeelanaria Benwannamas, Yeyen Nurhamiyah, Phongphak Sataman, Somprasong Thongkham, Wiranee Sriwiang, Threeraphat Chutimasakul, Jirawat Trakulmututa, Tanagorn Sangtawesin   +8 more
doaj   +1 more source

Highly efficient catalytic valorization of biomass-derived hexoses and furfuryl alcohol in the presence of polymer-based catalysts

Green Energy & Environment, 2019
The catalytic transformation of furfuryl alcohol and hexose into value-added chemicals have been investigated with a series of polymer-based catalysts including poly(styrenesulfonic acid) (PSS), graphite oxide-doped poly(styrenesulfonic acid) (PSS-GO ...
Yangyang Zhang, Xinli Tong, Linhao Yu, Lingwu Meng, Pengfei Guo, Song Xue   +5 more
doaj   +1 more source

New method for photoresist stripping [PDF]

, 1970
Vacuum dehydration of negatively working photoresist eliminates trace contamination of conventional stripping methods. The semiconductor substrate is coated with photoresist, exposed, developed, cured, and etched, and then placed in a vacuum.
Davern, W. E., Tobin, L. S.
core   +1 more source