Results 61 to 70 of about 144,169 (298)

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source

Cosmological relaxation from dark fermion production

Journal of High Energy Physics, 2020
We consider the cosmological relaxation solution to the electroweak hierarchy problem using the fermion production as a dominant friction force. In our approach, neither super-Planckian field excursions nor a large number of e-folds arise, and scanning ...
Kenji Kadota, Ui Min, Minho Son, Fang Ye
doaj   +1 more source

Conformal freeze-in, composite dark photon, and asymmetric reheating

Journal of High Energy Physics, 2023
Large classes of dark sector models feature mass scales and couplings very different from the ones we observe in the Standard Model (SM). Moreover, in the freeze-in mechanism, often employed by the dark sector models, it is also required that the dark ...
Wen Han Chiu, Sungwoo Hong, Lian-Tao Wang   +2 more
doaj   +1 more source

Oligohistidine‐Functionalized Single‐Walled Carbon Nanotube‐Guided RNA Delivery to Improve Shoot Regeneration Efficiency in Plant Calli

Advanced Functional Materials, EarlyView.
The pH‐sensitive His6‐SWNTs, which is functionalized with oligohistidine, can deliver STTM396 molecules into callus cells. The STTM396–SWNT complex treatments enhance shoot regeneration efficiency by regulating the miR396‐GRF module in Arabidopsis and tomato calli.
Yeong Yeop Jeong, Hyuna Kwak, Woojin Jeong, Hongwoo Lee, Su‐Ji Jeon, Hyo‐Jun Lee, Pil Joon Seo, Seon‐Yeong Kwak   +7 more
wiley   +1 more source

A cosmic degeneracy story: structure formation with warm dark matter and scale-dependent primordial non-Gaussianities [PDF]

Journal of Cosmology and Astroparticle Physics
It has been recently shown that cosmological models with scale-dependent primordial non-Gaussianities (sPNG) could provide a possible path to solve current cosmic tensions.
Cl'ement Stahl, Benoit Famaey, R. Ibata, K. Kraljic, Fabien Castillo   +4 more
semanticscholar   +1 more source

Tailored Reconstruction of Polycrystalline CuO Nanorods Promotes C─C Coupling in CO2 Electroreduction

Advanced Functional Materials, EarlyView.
Controlling the polycrystallinity of CuO nanorods enables directional reconstruction into rod‐like structures that stabilize Cu(OH)2 and increase Cu+ ratios, while modulating interfacial water dynamics to enhance C─C coupling and boost C2+ product formation in CO2 electroreduction.
Hyeon‐Seok Bang, Young‐Jin Ko, Hyo Sang Jeon, Eugene Huh, Eung Dab Kim, Min Gwan Ha, Chulwan Lim, Jiho Jeon, Seohyeon Ka, Dogyeong Kim, Xiaojie Zhang, Yeongjin Kim, Kyeongsu Kim, Woong Hee Lee, Jae‐Young Choi, Hyung‐Suk Oh   +15 more
wiley   +1 more source

Metastable dark energy

Physics Letters B, 2017
We build a model of metastable dark energy, in which the observed vacuum energy is the value of the scalar potential at the false vacuum. The scalar potential is given by a sum of even self-interactions up to order six.
Ricardo G. Landim, Elcio Abdalla
doaj   +1 more source

Warm inflation, neutrinos and dark matter: a minimal extension of the Standard Model

Journal of High Energy Physics, 2021
We show that warm inflation can be realized within a minimal extension of the Standard Model with three right-handed neutrinos, three complex scalars and a gauged lepton/B-L U(1) symmetry.
Miguel Levy, João G. Rosa, Luís B. Ventura   +2 more
doaj   +1 more source

Warm dark matter chills out: constraints on the halo mass function and the free-streaming length of dark matter with eight quadruple-image strong gravitational lenses [PDF]

Monthly notices of the Royal Astronomical Society, 2019
The free-streaming length of dark matter depends on fundamental dark matter physics, and determines the abundance and concentration of dark matter haloes on sub-galactic scales.
D. Gilman, S. Birrer, A. Nierenberg, T. Treu, Xiaolong Du, A. Benson   +5 more
semanticscholar   +1 more source

Thermal Phase‐Modulation of Thickness‐Dependent CVD‐Grown 2D In2Se3

Advanced Functional Materials, EarlyView.
A comprehensive study of CVD‐grown 2D In2Se3 reveals a distinct thickness‐dependent phase landscape and a reversible, thermally driven transformation between β″ and β* variants. In situ TEM electron diffraction and Raman spectroscopy reveal structural dynamics, while the structural invariance of the α‐phase in ultrathin regimes highlights its stability—
Dasun P. W. Guruge, Zhenhuan Chen, Joseph F. S. Fernando, Chao Zhang, Liangzhi Kou, Konstantin L. Firestein, Dmitri V. Golberg   +6 more
wiley   +1 more source