Results 121 to 130 of about 691,586 (395)

Boron in Very Metal-Poor Stars [PDF]

, 1998
We have observed the B I 2497 A line to derive the boron abundances of two very metal-poor stars selected to help in tracing the origin and evolution of this element in the early Galaxy: BD +23 3130 and HD 84937. The observations were conducted using the
Alonso A., Bengt Edvardsson, Bengt Gustafsson, Blackwell D. E., Carlsson M., Dan Kiselman, David L. Lambert, Edvardsson B., Edvardsson B., Garcia Lopez R. J., Gratton R., Hobbs L. M., J. Garcia Lopez, Johansson S. G., Kiselman D., Kiselman D., Molaro P., Molaro P., Nissen P. E., O'Brian T. R., O'Brian T. R., Pavlenko Ya. V., Pavlenko Ya. V., Pavlenko Ya. V., Rafael Rebolo, Terasawa N.   +25 more
core   +2 more sources

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

Advanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva, Giulio Fatti, Emanuel Carlos, Guilherme Ferreira, Sumita Goswami, Suman Nandy, Luiz H. C. Mattoso, Elvira Fortunato, Caio G. Otoni, Rodrigo Martins   +9 more
wiley   +1 more source

Multicolor Optoelectronic Synapse Enabled by Photon‐Modulated Remote Doping in Solution‐Processed Van Der Waals Heterostructures

Advanced Functional Materials, EarlyView.
Multicolor optoelectronic synapses are realized by vertically integrating solution‐processed MoS2 thin‐film and SWCNT. The electronically disconnected but interactive MoS2 enables photon‐modulated remote doping, producing a bi‐directional photoresponse.
Jihyun Kim, Hyunbin Kim, Gang Jin Cheon, Dohyun Lee, In Soo Kim, Uiyeon Won, Jongseok Lee, Sang Min Won, Joohoon Kang   +8 more
wiley   +1 more source

Boron beats nitrogen: strained boron–boron bonds as (molecular) proton sponges

Physical Chemistry Chemical Physics
The basicity and the hydrogen bond (HB) acceptor capability of diborane derivatives of dipyrazole 1 with a B–B bond have been studied theoretically using M06-2x and CCSD(T) methods. The proton affinities of 1b reach 1096 kJ mol−1.
Ibon Alkorta, José Elguero, M. Merced Montero-Campillo, Otilia Mó, Manuel Yáñez   +4 more
openaire   +2 more sources

Mechanical Loading and Tribological Studies on Boron Carbide (B4C) and Lead (Pb) Particles Dispersed Epoxy-Based Multilayered Composites [PDF]

, 2022
S. Vignesh, J. T. Winowlin Jappes, M. Adam Khan, Temal Varol   +3 more
openalex   +1 more source

Covalent Organic Frameworks for Water Sorption: The Importance of Framework Physical Stability

Advanced Functional Materials, EarlyView.
This study explores the water‐vapor stability of 2D covalent organic frameworks (COFs) with varying pore sizes. Results reveal microporous COFs demonstrate superior stability compared to mesoporous ones, despite lower water uptake. Mesoporous keto‐enamine‐linked COFs show enhanced stability due to intralayer hydrogen bonds, confirmed by simulations and
Wei Zhao, He Li, Bui Duc Thuan, Weidong Chen, Qiang Zhu, Mounib Bahri, Boyu Li, Kexin Yu, Chengjun Kang, Ting Chen, Zekun Wang, Nigel D. Browning, Kian Jon Chua, Dan Zhao   +13 more
wiley   +1 more source

On the Hardness of a New Boron Phase, Orthorhombic {\gamma}-B28

, 2011
Measurements of the hardness of a new high-pressure boron phase, orthorhombic {\gamma}-B28, are reported. According to the data obtained, {\gamma}-B28 has the highest hardness (~50 GPa) of all known crystalline modifications of ...
A. R. Oganov, A.R. Oganov, B. F. Decke, B.E. Douglas, E. Amberger, H. Bolmgren, J.L. Hoard, M. Vlasse, O. O. Kurakevych, V. L. Solozhenko, V.L. Solozhenko   +10 more
core   +1 more source

A Smart Bio‐Battery Facilitates Diabetic Bone Defect Repair Via Inducing Macrophage Reprogramming and Synergistically Modulating Bone Remodeling Coupling

Advanced Functional Materials, EarlyView.
This research presents a novel implantable bio‐battery, GF‐OsG, tailored for diabetic bone repair. GF‐OsG generates microcurrents in high‐glucose conditions to enhance vascularization, shift macrophages to the M2 phenotype, and regulate immune responses.
Nanning Lv, Haifu Sun, Wenxiang Tang, Yonggang Li, Zhonglai Qian, Lihui Hong, Chong Chen, Hongye Li, Jiaxiang Bai, Yusen Qiao, Mingming Liu   +10 more
wiley   +1 more source

Tannin resin-boron associations: Leaching and biological resistance [PDF]

, 2012
The easy leaching of boron in wood preservation formulations has allowed to use this fungicide only for short term applications. The recently discovered adduct with flavonoids allows boron to resist longer periods of time within wood and consequently ...
Leménager, Nicolas, Petutschnigg, Alexander, Pizzi, Antonio, Thévenon, Marie-France, Tondi, Gianluca, Wieland, Stefanie   +5 more
core  

Constricted Boron Nanotubes

, 2004
The recent discovery of pure boron nanotubes raises questions about their detailed atomic structure. Previous simulations predicted tubular structures with smooth or puckered surfaces. Here, we present some novel results based on ab initio simulations of
Alexander Quandt, Boustani, Boustani, Boustani, Boustani, Boustani, Boustani, Boustani, Cao, Ceperley, Chopra, Ciuparu, Dresselhaus, Gemming, Gindulyte, Iijima, Jens Kunstmann, Kohn, Kresse, Kresse, Kresse, Otten, Pauling, Perdew, Quandt, Tenne, Tenne, Teter, Tremel, Vanderbilt, Wu, Zhang, Zhang   +32 more
core   +1 more source