Results 101 to 110 of about 293,133 (311)

Mesoporous Silica Microspheres by Super‐Fast Alkaline Etching of Micrometer‐Sized Stöber Particles

Advanced Engineering Materials, EarlyView.
Microscale silica particles are prepared along with a modified, scalable Stöber synthesis using the continuous addition of tetraethoxy silane to an ethanolic solution of ammonia with KCl. Etching with hydroxide ions at 95 °C gave porous analogs within minutes. Monodisperse particles are isolable in high yield after precipitation in ethanol.
Adrian Vaghar, Georgij Jegorenkov, Gerrit A. Luinstra   +2 more
wiley   +1 more source

Relevance of cis- and trans-dichloride Ru intermediates in Grubbs-II olefin metathesis catalysis (H(2)IMesCl(2)Ru=CHR) [PDF]

, 2008
Using density functional theory with the B3LYP and M06 functionals, we show conclusively that the (H2IMes)(Cl)2Ru olefin metathesis mechanism is bottom-bound with the chlorides remaining trans throughout the reaction, thus attempts to effect diastereo ...
Benitez, Diego, Goddard, William A., III, Tkatchouk, Ekaterina   +2 more
core   +2 more sources

Rapid chloride permeability test as durability index of the concrete structure

Materiales de Construccion, 2003
From the RCPT publication, this test has been frequently used in the concrete structures durability assessment. This test it could be determined in a relatively short time the material permeability, within a rank or quality level that allows comparing ...
B. Martínez-Sánchez, J. J. Flores-Martinez, R. Uribe-Afif, O. Medína-Hernández   +3 more
doaj   +1 more source

3D Bioprinting of Thick Adipose Tissues with Integrated Vascular Hierarchies

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
An advanced 3D bioprinting technique is used here to create thick adipose tissues with a central, vessel and extensive branching. The construct is made using alginate, gelatin and collagen‐based bioinks. Flow through the complex vessel network is demonstrated as well as its successful integration with a femoral artery following implantation in a rat ...
Idit Goldfracht, Majd Machour, Inbal Michael, Maria Bulatova, Janette Zavin, Shulamit Levenberg   +5 more
wiley   +1 more source

A cooperative Pd-Cu system for direct C-H bond arylation [PDF]

, 2014
The authors are grateful to the Royal Society (University Research Fellowship to CSJC) for financial support.A novel and efficient method for C-H arylation using well-defined Pd- and Cu-NHC systems has been developed.
Cazin, Catherine S. J., Lazreg, Faima, Lesieur, Mathieu   +2 more
core   +1 more source

Efficient and Scalable Radiative Cooling for Photovoltaics Using Solution‐Processable and Solar‐Transparent Mesoporous Nanoparticles

Advanced Functional Materials, EarlyView.
Graded refractive index (GRI) structures are prepared from the layer‐by‐layer spray coating of the mesoporous SiO2 nanoparticles, showing high solar transparency and thermal emissivity. Under outdoor conditions, after 50 days, the GRI‐coated photovoltaics show on average 6.65 ± 1.48 °C lower than that of the non‐coated references, maintaining 80.9 ± 8 ...
Heesuk Jung, Sung Yoon Min, Byungsoo Kang, Yongseok Yoo, Jihun Jang, Yeoun‐Woo Jang, Hyojeong Choi, Hyeong Won Lee, Swarup Biswas, Yongju Lee, Mansoo Choi, Phillip Lee, Min Seok Jang, Hyeok Kim, Shu Yang   +14 more
wiley   +1 more source

Half a century of research on diatoms in athalassic habitats in central Poland [PDF]

, 2015
The authors would like to dedicate this paper to Prof. Marcin Pliński who started the phycological research in these unique habitats of Central Poland.Part of the geology in the Łódź province was formed during the Upper Permian period when rich ...
Nowicka-Krawczyk, Paulina, Olszyński, Rafał, Żelazna-Wieczorek, Joanna   +2 more
core   +1 more source

Mechanically Adaptable High‐Performance p(SBMA‐MMA) Copolymer Hydrogel with Iron (II/III) Perchlorate for Wearable Thermocell Applications

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
A high‐performance n‐type element for quasi‐solid‐state thermocells has been introduced, outperforming conventional p‐type elements and showcasing the potential to harness body heat as an energy source or power embedded sensors. This advance significantly contributes to waste thermal energy harvesting and wearable technology, paving the way for self ...
Gilyong Shin, Jae Yoon Baek, Ju Hyeon Kim, Ju Hwan Lee, Hyeong Jun Kim, Byeong Jun So, Yuseung Choi, Sungryul Yun, Taewoo Kim, Jei Gyeong Jeon, Tae June Kang   +10 more
wiley   +1 more source

Sterically restricted tin phosphines, stabilized by weak intramolecular donor-acceptor interactions [PDF]

, 2014
Funding: Engineering and Physical Sciences Research Council (EPSRC)Four related sterically restricted pen-substituted acenaphthenes have been prepared containing mixed tin phosphorus moieties in the proximal 5,6-positions (Acenap[SnR3][(PPr2)-Pr-i ...
Arachchige, Kasun S. Athukorala, Ashbrook, Sharon E., Buehl, Michael, Camacho, Paula Sanz, Chalmers, Brian A., Kilian, Petr, Knight, Fergus R., Ray, Matthew J., Slawin, Alexandra M. Z., Woollins, J. Derek   +9 more
core   +4 more sources

Concrete deterioration in Colombian urban atmospheres

Revista Facultad de Ingeniería Universidad de Antioquia, 2013
The combination of atmospheric pollutants, such as carbon dioxide and chlorides has a synergistic effect accelerating the degradation process of concrete.
Esteban Correa, Sergio Peñaranda, Juan Castaño, Félix Echeverría   +3 more
doaj