Results 51 to 60 of about 32,643 (235)

Two-micron spectrophotometry of the galaxy NGC 253 [PDF]

, 1979
A very strong Brackett-gamma hydrogen emission line, and the 2.3 micron CO stellar absorption feature were measured in NGC 253. The presence and strength of the CO feature indicates that late type giant stars produce most of the 2.2 micron continuum ...
Becklin, E. E., Matthews, K., Neugebauer, G., Wynn-Williams, C. G.   +3 more
core   +1 more source

Analysis of Lipids in the Medulla of Japanese Hair and Their Function

Cosmetics, 2018
The hair is composed of the cuticle (the outermost surface), cortex (its major part), and medulla (in the hair center). The lipid content of the medulla of Caucasian hair is relatively higher than that of African-American hair.
Jun Ymazaki, Kazuhisa Maeda
doaj   +1 more source

A Pseudo‐Mytilus Edulis Foot Protein‐Based Hydrogel Adhesive with Osteo‐Vascular‐Immune Coupling Effects for Osteoporotic Bone‐Implant Integration

Advanced Materials, EarlyView.
Inspired by mussel proteins, YDC‐Gel‐Zn is a smart bone glue designed for osteoporotic implants. It adheres strongly to both metal implants and bone for initial fixation. In osteoporosis's inflammatory environment, it sequentially releases zinc ions and therapeutic peptides: the zinc modulates immune cells to reduce inflammation, while the peptides ...
Wentao Wang, Zhenyu Li, Siming Zhang, Yue Ma, Lei Yu, Qidong Zhang, Guoqing Pan, Dechun Geng, Chen Zhu, Jiaxiang Bai   +9 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

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

Stellar Fluxes as Probes of Convection in Stellar Atmospheres [PDF]

, 2006
Convection and turbulence in stellar atmospheres have a significant effect on the emergent flux from late-type stars. The theoretical advancements in convection modelling over recent years have proved challenging for the observers to obtain measurements ...
Adelman, Barry Smalley, Gardiner, Heiter, Kurucz, Smalley, Smalley, Smalley, Smalley, Smalley, van't Veer   +10 more
core   +2 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

Green Synthesis of Ag/AgCl Nanoparticles From Argan Oil Waste: Characterization, Antibacterial, and Cytotoxicity Activities. [PDF]

Food Sci Nutr
Ag/AgCl nanoparticles were biosynthesized using argan‐derived saponins and characterized by UV–Vis, FTIR, XRD, SEM/EDS, and TEM, confirming spherical structures averaging 12.3 ± 7.6 nm. The nanomaterials displayed a characteristic surface plasmon resonance at 400–450 nm and crystalline Ag/AgCl phases. Antibacterial performance against Gram‐positive and
El Kaourat A, El Mouahid H, Bentarhlia N, Kartah BE, Jaouhari Y, Oubihi A, Guessous A, Bordiga M, El Monfalouti H.   +8 more
europepmc   +2 more sources

Bacterial‐Responsive and Dye‐Selective Janus Membranes via Laser‐Directed Fluorinated Graphene Interfaces

Advanced Materials Interfaces, EarlyView.
This work highlights laser‐engineered wettability switching of fluorine‐doped laser‐induced graphene (F‐LIG) for antibacterial, thickness‐tunable, dye‐selective filtration. Precise CO2‐laser patterning modulates surface roughness and hydrophobicity, suppressing bacterial adhesion and disrupting cell membranes, while Janus F‐LIG/F‐PPI structures enable ...
Jeong Min Sohn, Yun Chan Hwang, Jaeseok Ha, Hayoung Cho, Yong Chae Jung, Ki‐Ho Nam   +5 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