Results 151 to 160 of about 669,031 (383)

Tunable Preparation of β‐Substituted Alkenoate Esters via Radical Alkenylation of C(sp³)–H Bonds with Allenoates

Advanced Synthesis &Catalysis, Accepted Article.
A photocatalytic strategy for the radical alkenylation of aliphatic C(sp³)–H bonds with 2,3‐allenoate esters is described. The protocol takes place upon irradiation of the reaction mixture in the presence of the decatungstate anion, which triggers C–H cleavage in the chosen aliphatic substrates.
Alexandra Jorea, Roberto Chessa, Davide Ravelli   +2 more
wiley   +1 more source

The Tercentenary of the Telescope [PDF]

Nature, 1910
THE article on the tercentenary of the telescope, published in NATURE of December 16, 1909, is extremely welcome, not only because of its appositeness in point of date, but because Dr. Dreyer sets in true light the nature of Galileo's claims in connection with the discovery of the telescope.
openaire   +2 more sources

Conceptual design of the optical system of the 6.5m wide field multiplexed survey telescope with excellent image quality

PhotoniX, 2023
Astrophysics and cosmology in the coming decades urgently need a large field-of-view (FOV), highly multiplexed spectroscopic survey telescope satisfying challenging image quality and stability requirements.
Yifan Zhang, Haijiao Jiang, Stephen Shectman, Dehua Yang, Zheng Cai, Yong Shi, Song Huang, Lu Lu, Yamin Zheng, Shaonan Kang, Shude Mao, Lei Huang   +11 more
doaj   +1 more source

Continuous Flow Technology Enabling Photochemistry

Advanced Synthesis &Catalysis, Accepted Article.
The merger of continuous flow technology and modern photochemistry has enabled countless applications showcasing new opportunities for chemical synthesis demonstrating improvements in selectivity, safety, sustainability and scalability. This focused review aims to highlight a selection of recently published case studies from academic and industrial ...
Ruairi Crawford, Marcus Baumann
wiley   +1 more source

Supramolecular Gels as Active Tools for Reaction Engineering

Angewandte Chemie, EarlyView.
The unique combination of environments within gels, self‐assembled from low‐molecular‐weight gelators, offers the ability to control reactivity in new ways, achieving unique reaction outcomes, leading to the emerging concept of supramolecular gels as nanoreactors. Smart chemical engineering methods enable the use of such gels to fabricate materials and
David K. Smith
wiley   +2 more sources

Dust in External Galaxies [PDF]

, 2009
Existing (Spitzer Space Telescope) and upcoming (Herschel Space Telescope) facilities are deepening our understanding of the role of dust in tracing the energy budget and chemical evolution of galaxies.
Calzetti, Daniela
core   +2 more sources

Constructing Stable Bifunctional Electrocatalyst of Co─Co2Nb5O14 with Reversible Interface Reconstitution Ability for Sustainable Zn‐Air Batteries

Advanced Science, EarlyView.
A bifunctional electrocatalyst of Co─Co2Nb5O14 with a strong interaction interface is fabricated, and a bidirectional adsorption/migration mechanism of oxygen species between the reversible active sites of Nb5+/Nb4+ has been proposed. With the catalytic strategy design, the liquid Zn‐air batteries exhibits long‐term stability over 2050 cycles, and the ...
Shuo Chen, Liang Zhang, Zheng Liu, Yuehui Chen, Shouzhu Li, Yuanyuan Zhang, Junyu Chen, Jianhua Yan   +7 more
wiley   +1 more source

The Cherenkov Telescope Array Large Size Telescope

, 2013
The two arrays of the Very High Energy gamma-ray observatory Cherenkov Telescope Array (CTA) will include four Large Size Telescopes (LSTs) each with a 23 m diameter dish and 28 m focal distance.
Ambrosi, G., Awane, Y., Baba, H., Bamba, A., Barceló, M., Barrio, J. A., Bigas, O. Blanch, Boix, J., Brunetti, L., Carmona, E., Chabanne, E., Chikawa, M., Colin, P., Conteras, J. L., Cortina, J., Dazzi, F., de Almeida, U. Barres, Deangelis, A., Deleglise, G., Delgado, C., Dubois, F., Díaz, C., Fiasson, A., Fink, D., Flour, T. Le, Fouque, N., Freixas, L., Fruck, C., Gadola, A., García, R., Gascon, D., Geffroy, N., Giglietto, N., Giordano, F., Grañena, F., Gunji, S., Hagiwara, R., Hamer, N., Hanabata, Y., Hassan, T., Hatanaka, K., Haubold, T., Hayashida, M., Hermel, R., Herranz, D., Hirotani, K., Inoue, S., Inoue, Y., Ioka, K., Jablonski, C., Kagaya, M., Katagiri, H., Kishimoto, T., Kodani, K., Kohri, K., Konno, Y., Koyama, S., Kubo, H., Kushida, J., Lamanna, G., Lorenz, E., López, R., López-Moya, M., Majumdar, P., Manalaysay, A., Mariotti, M., Martínez, G., Martínez, M., Mazin, D., Miranda, J. M., Mirzoyan, R., Monteiro, I., Moralejo, A., Murase, K., Nagataki, S., Nakajima, D., Nakamori, T., Nishijima, K., Noda, K., Nozato, A., Ohira, Y., Ohishi, M., Ohoka, H., Okumura, A., Orito, R., Panazol, J. L., Paneque, D., Paoletti, R., Paredes, J. M., Pauletta, G., Podkladkin, S., Prast, J., Rando, R., Reimann, O., Ribó, M., Rosier-Lees, S., Saito, K., Saito, T., Saito, Y., Sakaki, N., Sakonaka, R., Sanuy, A., Sasaki, H., Sawada, M., Scalzotto, V., Schultz, S., Schweizer, T., Shibata, T., Shu, S., Sieiro, J., Stamatescu, V., Steiner, S., Straumann, U., Sugawara, R., Tajima, H., Takami, H., Tanaka, M., Tanaka, S., Tejedor, L. A., Terada, Y., Teshima, M., Totani, T., Ueno, H., Umehara, K., Vollhardt, A., Wagner, R., Wetteskind, H., Yamamoto, T., Yamazaki, R., Yoshida, A., Yoshida, T., Yoshikoshi, T.   +131 more
core   +1 more source

A Short and Personal History of the Spitzer Space Telescope [PDF]

, 2005
The Spitzer Space Telescope, born as the Shuttle Infrared Telescope Facility (SIRTF) and later the Space Infrared Telescope Facility (still SIRTF), was under discussion and development within NASA and the scientific community for more than 30 years prior
Werner, Michael
core   +1 more source

Dynamic Pathophysiological Insight into the Brain by NIR‐II Imaging

Advanced Science, EarlyView.
The functional integration of benefits from small semiconducting dyes and biocompatible serum proteins ushered in a new frontier of deep wide‐field in vivo imaging technique, affording valuable pathophysiological insight into the functioning of neurovascular unit in space and time.
Si Chen, Hao Chen, Xinxin Li, Shuqing He, Kangquan Shou, Kun Qian, Zhao Fang, Feng Gu, Baisong Chang, Zhen Cheng   +9 more
wiley   +1 more source