Results 101 to 110 of about 1,594,383 (308)

Tensile properties of in-situ precipitated polydimethylsiloxane networks

eXPRESS Polymer Letters, 2013
Tensile propertiesof polydimethylsiloxane (PDMS) networks filled with in-situ precipitated silica were investigated. Experimental results showed that increasing the swelling time of cured rubber sheets in tetraethoxysilane (TEOS) solution or elevating ...
Z. Zhang, Y-L. Yue, C. Zhang, H. Zhang, D-H. Zhang, X. Chen, Y-F. Chen   +6 more
doaj   +1 more source

Síntese de 2-Quinolinonas análogos de cumarinas isoladas de polygala sabulosa [PDF]

, 2009
TCC (graduação) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Curso de Química.A espécie Polygala sabulosa, conhecida popularmente como “Timuto Pinheirinho” é uma pequena erva que cresce no sul meridional montanheiro
Espindola, Leandro
core  

Porosity Engineering of MXene Architectures: Toward High‐Performance Aqueous Electrochemical Energy Storage

Advanced Materials, EarlyView.
This review systematically summarizes recent advances in porosity engineering of MXenes, with a focused discussion on their structure‐governed energy storage properties. A critical analysis of structure–property relationships is presented across alkali‐ion batteries, multivalent‐ion batteries, and supercapacitors.
Shude Liu, Jieming Chen, Xue Peng, Huilin Zhang, Ling Kang, Ming Ma, Zhaoling Li, Yusuke Yamauchi, Bin Ding   +8 more
wiley   +1 more source

Emprego de sílica gel organicamente modificada e impressa ionicamente para pré-concentração seletiva on-line de íons cobre Employ of silica gel organically modified and ionically imprinted for selective on-line preconcentration of copper ions

Química Nova, 2010
The present work purposes the preparation of a silica gel sorbent organically modified with 2-aminoethyl-3-aminobutylmethyldimethoxysilane (AAMDMS) and imprinted with Cu2+ ions by means surface imprinting technique and its use for selective on-line ...
Thiago Carvalho de Ávila, Mariana Gava Segatelli, Luiz Alberto Beijo, César Ricardo Teixeira Tarley   +3 more
doaj   +1 more source

Potencial alelopático de Myrcia guianensis. [PDF]

, 2016
O uso do fogo e de roçadeira para controle de plantas daninhas em pastagens tem se mostrado pouco efetivo. Já o uso de herbicidas sintéticos, embora mais eficaz no controle de plantas daninhas, tem sido questionado quanto ao impacto ambiental.
ARRUDA, A. C., ARRUDA, M. S. P., GUILHON, G. M. P., MULLER, A. H., SANTOS, A. S., SANTOS, L. S., SANTOS, R. A., SOUZA FILHO, A. P. S.   +7 more
core  

Eutectozymes as Soft Hybrid Materials for Advanced Biocatalysis

Advanced Materials, EarlyView.
Eutectozymes are sustainable hybrid materials that embed a GOx–HRP cascade within hydrophobic eutectogels featuring a dual supramolecular–covalent network. This architecture preserves native enzyme structure and stability, enables efficient heterogeneous biocatalysis in aqueous media, and positions eutectogels as robust platforms for next‐generation ...
Manuel Eduardo Martinez Cartagena, Lucia Suarez, Aitor Ontoria, Francisca J. Benitez, Elixabete Rezabal, María Soledad Orellano, Marcelo Calderón, Cristián Huck‐Iriart, Agustin S. Picco, Matias L. Picchio, Ana Beloqui   +10 more
wiley   +1 more source

PENGGUNAAN MATRIKS PENDUKUNG (SILIKA GEL) PADA TANAMAN KAYU APU (pistia stratiotes. l) SEBAGAI BIOSORBEN UNTUK MENGURANGI TINGKAT PENCEMAR ION TIMBAL (Pb2+)

Jurnal Riset Kimia, 2015
Problems of environmental became one of problem must be interested by public, One of them was the stain by ion lead (Pb2+). An experiment was conduct about the use of “Kayu Apu” (Pistia Stratiotes.
Sri Haryati, Elva Yasmi, Erviyenni -
doaj   +1 more source

S'obté un catalitzador reciclable [PDF]

, 2013
Investigadors del Departament de Química de la UAB han desenvolupat un catalitzador de ruteni suportat en gel de sílice que és reciclable en reaccions de metàtesi d'alquens.
Monge-Marcet, Amàlia, Pleixats i Rovira, Roser, Universitat Autònoma de Barcelona. Àrea de Comunicació i Promoció   +2 more
core   +1 more source

Alcalóides de Aspidosperma auriculatum Standl [PDF]

, 2003
Species from genus Aspidosperma show the presence of indol alkaloids. From Aspidosperma quebracho-blanco Schlecht quebracacidine was obtained1, from A. olivaceum. Schmutz and Hunziker2 isolated olivacine, among others substances.
BARBOSA, Wagner Luiz Ramos, SOARES, Daniela Cristina, TAVARES, Isabel Cecília de Castro   +2 more
core   +1 more source

Beyond Earth: Resilience of Quasi‐2D Perovskite Solar Cells in Space

Advanced Materials, EarlyView.
In the article (DOI: 10.1002/adma.202520433), Christoph Putz and co‐workers demonstrate rigid quasi‐2D perovskite solar cells operating in low Earth orbit, delivering stable power for more than 100 days under real‐space conditions. In‐orbit performance is correlated with extensive ground‐based thermal and proton‐irradiation studies on rigid and ...
Christoph Putz, Lukas E. Lehner, Stepan Demchyshyn, Bekele Hailegnaw, Phillip Jahelka, Magdalena Breitwieser, Sercan Özen, Andrea Denker, Jürgen Bundesmann, Alina Hanna Dittwald, Dilara Karabulut, Philipp Tockhorn, Steve Albrecht, Felix Lang, Markus C. Scharber, Michael D. Kelzenberg, Harry A. Atwater, Martin Kaltenbrunner   +17 more
wiley   +1 more source