Results 51 to 60 of about 32,182 (211)

Embedded Fe‐Cu Pairs Enable Tandem Nitrate‐to‐Ammonia Electroreduction

Advanced Materials, EarlyView.
A tandem Fe‐Cu pair catalyst, composing a single copper atom (Cu–N3) coordinated to adjacent iron clusters (Fe3N8), is designed. The electron‐deficient copper sites markedly enhance nitrate adsorption, while the electron‐rich iron clusters facilitate nitrite adsorption and water activation, thereby accelerating the electroreduction of nitrate and ...
Yuxiao Liu, Xia Zhang, Solmaz Feizpoor, Hsiao‐Chien Chen, Linfeng Li, Yunpeng Zuo, Shengji Tian, Mengni Liu, Wenyu Hu, Muhammad Humayun, Kaifu Huo, Chade Lv, Yuanjie Pang, Dingsheng Wang, Xin Wang, Chundong Wang   +15 more
wiley   +1 more source

High spatial resolution mid-infrared observations of the low-mass young star TW Hya [PDF]

, 2007
We want to improve knowledge of the structure of the inner few AU of the circumstellar disk around the nearby T Tauri star TW Hya. Earlier studies have suggested the existence of a large inner hole, possibly caused by interactions with a growing ...
Bouwman, J., Dullemond, C. P., Henning, Th., Jaffe, W., Leinert, Ch., Ratzka, Th.   +5 more
core   +4 more sources

Tunable Plasmonic Response of Silver Nanoparticles Entangled in Detonation Nanodiamond Network via Colloidal Self‐Assembly

Advanced Materials Interfaces, EarlyView.
Detonation nanodiamonds form a network that entangles silver nanoparticles into stable nanocomplexes. The structure can fine‐tune and enhance plasmonic absorption through nearfield electromagnetic interactions but prevents silver particle aggregation. The study shows how the arrangement and concentration of particles affect light absorption, offering a
Vendula Hrnčířová, Markéta Šlapal Bařinková, Muhammad Qamar, Kateřina Kolářová, Bohuslav Rezek   +4 more
wiley   +1 more source

Investigation of in vivo measurement of cerebral cytochrome-c-oxidase redox changes using near-infrared spectroscopy in patients with orthostatic hypotension [PDF]

, 2007
We have previously used a continuous four wavelength near infrared spectrometer to measure changes in the cerebral concentrations of oxy- (Δ[HbO2] and deoxy- haemoglobin (Δ[HHb]) during head-up tilt in patients with primary autonomic failure.
Cooper, C.E., Delpy, D.T., Elwell, C.E., Leung, T.S., Smith, M., Tachtsidis, I., Tisdall, M.   +6 more
core  

Biochar‐Iron Oxide Composites for Adsorption of Chlorophenoxy Herbicides: Impact of Chlorine Substituents on Bath and Continuous Adsorption Performance

Advanced Sustainable Systems, EarlyView.
Iron oxide‐impregnated biochar from sugarcane bagasse exhibits remarkable efficiency in removing 2,4‐dichlorophenoxyacetic acid and chlorophenoxyacetic acid, offering a sustainable option for water purification. The material retains high performance under real conditions while meeting safety criteria for irrigation use. Distinct structural features and
Thamiris Ferreira Souza, Raphael Longuinhos Monteiro Lobato, Luisa Cardoso Maia, Lavínia Nunes Louzada, Maria Elisa Avila Faria, Lucas Ferreira Fernandes, Leandro Vinícius Alves Gurgel, Gabriel Max Dias Ferreira, Jenaina Ribeiro‐Soares, Guilherme Max Dias Ferreira   +9 more
wiley   +1 more source

A Spitzer IRS Study of Debris Disks Around Planet-Host Stars

, 2010
Since giant planets scatter planetesimals within a few tidal radii of their orbits, the locations of existing planetesimal belts indicate regions where giant planet formation failed in bygone protostellar disks.
Beichman, Beichman, Beichman, Bertone, Bessell, Bryden, Bryden, Bryden, Butler, C. A. Beichman, Carpenter, Chen, Chen, Cochran, Cutri, Dodson-Robinson, Fischer, Fischer, Geoffrey Bryden, Goldreich, Hauschildt, Hillenbrand, Høg, Ida, John M. Carpenter, Johnson, Johnson, Kurucz, Kóspál, Lawler, Moro-Martín, Peletier, Perryman, Quillen, Sarah E. Dodson-Robinson, Sato, Su, Tanner, Trilling, Valenti, Wright, Wright   +41 more
core   +1 more source

Microwave‐Activated Bacterial Biorobot for Multimodal Cancer Therapy

Advanced Science, EarlyView.
An Escherichia coli bacterial biorobot is engineered for localized microwave activation in cancer therapy. Upon activation at tumor sites, the biorobot releases glucose oxidase, inducing tumor cell death via glucose depletion and H2O2 generation catalyzed by Cu2O.
Huilan Zhuang, Yongjian Zhang, Yajuan Fu, Dangjin Ke, Qi Chen, Sijie Shao, Panpan Xue, Yuanchun Chen, Xuemei Zeng, Shuangqian Yan   +9 more
wiley   +1 more source

Active Transport of Macrocycles into Micelles Using Molecular Pumps

Angewandte Chemie, EarlyView.
Artificial molecular pumps attached to polymeric micelles were found capable of transporting charged macrocycles into the micelles. The pumps operate with only modestly reduced pumping efficiency as compared to nonmicellar counterparts, indicating that ring‐threading molecular pumps can transport charged solutes into supramolecular assemblies, akin to ...
James S. W. Seale, Swagat Sharma, Christopher K. Lee, Han Han, Tyler Jaynes, Eric W. Roth, Saman Shafie, Yunyan Qiu, Luke Malaisrie, Madison I. Bardot, Long Zhang, Yi‐Kang Xing, Dong Jun Kim, Samuel I. Stupp, R. Dean Astumian, Evan A. Scott, William R. Dichtel, J. Fraser Stoddart   +17 more
wiley   +2 more sources

PD‐L1‐Targeting Biomimetic Photoresponsive Thermosensitive Liposomes for Triple‐Negative Breast Cancer

Advanced Science, EarlyView.
Tan et al. developed a platelet membrane‐coated, thermoresponsive liposome for targeted, light‐controlled delivery of fluorinated peptides that promotes programmed death‐ligand 1 degradation, induces tumor immunogenic cell death, suppresses solid tumors and metastases, and triggers durable immune memory, offering a promising strategy for peptide‐based ...
Manman Tan, Chengyu Shi, Guangyi Chi, Xinwan Su, Fangzhou Liu, Linyu Zhu, Guangqian Cheng, Xiangyi Chen, Meng Yu, Yijian Chen, Ying Wang, Yu Chen, ShuLing Yan, Wenfei Wu, Qingfeng Yan, Jianzhong Shao, Kai Wang, Xiangrui Liu, Min Zhou, Aifu Lin   +19 more
wiley   +1 more source

Spitzer spectroscopy of circumstellar disks in the 5 Myr old upper Scorpius OB association [PDF]

, 2009
We present mid-infrared spectra between 5.2 and 38 μm for 26 disk-bearing members of the ~5 Myr old Upper Scorpius OB association obtained with the Infrared Spectrograph (IRS) onboard the Spitzer Space Telescope. We find clear evidence for changes in the
Carpenter, John M., Dahm, S. E.
core   +1 more source