A systematic study of one-loop contributions to the decay channels h → ll¯γ with l = νe, µ, τ, e, µ, performed in Higgs extended versions of the Standard Model, is presented in the't Hooft-Veltm...
详细信息
Power transformers are critical components in power grids, whose main role is maintaining the required voltage levels throughout the grid. Thus, continuous condition monitoring of their status is crucial. Otherwise, c...
详细信息
The inkjet printing (IJP) technique is a highly promising technology for fabricating flexible electronics for wearable applications. The latest Microdrop IJP technology is introduced to produce flexible supercapacitor...
详细信息
Coexisting orders are key features of strongly correlated materials and underlie many intriguing phenomena from unconventional superconductivity to topological orders. Here, we report the coexistence of two interactin...
详细信息
Coexisting orders are key features of strongly correlated materials and underlie many intriguing phenomena from unconventional superconductivity to topological orders. Here, we report the coexistence of two interacting charge-density-wave (CDW) orders in EuTe4, a layered crystal that has drawn considerable attention owing to its anomalous thermal hysteresis and a semiconducting CDW state despite the absence of perfect Fermi surface nesting. By accessing unoccupied conduction bands with time- and angle-resolved photoemission measurements, we find that monolayers and bilayers of Te in the unit cell host different CDWs that are associated with distinct energy gaps. The two gaps display dichotomous evolutions following photoexcitation, where the larger bilayer CDW gap exhibits less renormalization and faster recovery. Surprisingly, the CDW in the Te monolayer displays an additional momentum-dependent gap renormalization that cannot be captured by density-functional theory calculations. This phenomenon is attributed to interlayer interactions between the two CDW orders, which account for the semiconducting nature of the equilibrium state. Our findings not only offer microscopic insights into the correlated ground state of EuTe4 but also provide a general nonequilibrium approach to understand coexisting, layer-dependent orders in a complex system.
Microbial electrolysis cells (MECs) are a new bio-electrochemical method for converting organic matter to hydrogen gas (H-2). Palm oil mill effluent (POME) is hazardous wastewater that is mostly formed during the crud...
详细信息
Microbial electrolysis cells (MECs) are a new bio-electrochemical method for converting organic matter to hydrogen gas (H-2). Palm oil mill effluent (POME) is hazardous wastewater that is mostly formed during the crude oil extraction process in the palm oil industry. In the present study, POME was used in the MEC system for hydrogen generation as a feasible treatment technology. To enhance biohydrogen generation from POME in the MEC, an empirical model was generated using response surface methodology (RSM). A central composite design (CCD) was utilized to perform twenty experimental runs of MEC given three important variables, namely incubation temperature, initial pH, and influent dilution rate. Experimental results from CCD showed that an average value of 1.16 m(3) H-2/m(3) d for maximum hydrogen production rate (HPR) was produced. A second-order polynomial model was adjusted to the experimental results from CCD. The regression model showed that the quadratic term of all variables tested had a highly significant effect (P < 0.01) on maximum HPR as a defined response. The analysis of the empirical model revealed that the optimal conditions for maximum HPR were incubation temperature, initial pH, and influent dilution rate of 30.23 ?, 6.63, and 50.71%, respectively. Generated regression model predicted a maximum HPR of 1.1659 m(3) H-2/m(3) d could be generated under optimum conditions. Confirmation experimentation was conducted in the optimal conditions determined. Experimental results of the validation test showed that a maximum HPR of 1.1747 m(3) H-2/m(3) d was produced. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
We investigate the dynamical behavior of a magnetized,dissipative accretion flow around a rapidly rotating black *** solve the magnetohydrodynamic equations and calculate the transonic accretion solutions which may co...
详细信息
We investigate the dynamical behavior of a magnetized,dissipative accretion flow around a rapidly rotating black *** solve the magnetohydrodynamic equations and calculate the transonic accretion solutions which may contain discontinuous shock *** investigate the effect ofζ-parameter(parametrizing the radial variation of the toroidal magnetic flux advection rate)on the dynamical behavior of *** a rapidly rotating black hole and for fixed injection parameters at the outer edge,we show that stationary shocks are sustained in the global magnetized accretion solutions for a wide range ofζand accretion rate(˙m).To investigate the observational implications,we consider dissipative shocks and estimate the maximum accessible energy from the post-shock corona(PSC)for nine stellar mass black hole *** compare this with the observed radio jet kinetic power reported in the literature,whenever *** find close agreement between the estimated values from our model and those reported in the literature.
The need for companies to create and implement Green Business Models has been growing in recent years, both from governments and society at large. Nevertheless, it has been more difficult than expected to reconfigure,...
详细信息
ISBN:
(数字)9798350360165
ISBN:
(纸本)9798350360172
The need for companies to create and implement Green Business Models has been growing in recent years, both from governments and society at large. Nevertheless, it has been more difficult than expected to reconfigure, build, and develop these models such that they are efficient and environmentally friendly. It is difficult to strike a balance between the monetary and non-monetary components of these models, both for specific companies and their whole value networks. There are security concerns with verifying the veracity of green claims to avoid greenwashing. A more open strategy to business model innovation is required for green business models to succeed in the long run, which in turn calls for better security technology.
作者：
Armin HochrainerMayukh LahiriManuel ErhardMario KrennAnton ZeilingerVienna Center for Quantum Science and Technology (VCQ)
Faculty of Physics University of Vienna 1090 Vienna Austria and Institute for Quantum Optics and Quantum Information (IQOQI) Vienna Austrian Academy of Sciences 1090 Vienna Austria Department of Physics
Oklahoma State University Stillwater Oklahoma 74078 USA Vienna Center for Quantum Science and Technology (VCQ)
Faculty of Physics University of Vienna 1090 Vienna Austria Institute for Quantum Optics and Quantum Information (IQOQI) Vienna Austrian Academy of Sciences 1090 Vienna Austria Departments of Chemistry and Computer Science University of Toronto Toronto Ontario M5S 3H6 Canada Vector Institute for Artificial Intelligence Toronto Ontario M5G 1M1 Canada and Max Planck Institute for the Science of Light 91058 Erlangen Germany
Two processes of photon-pair creation can be arranged such that the paths of the emitted photons are identical. The path information is thereby not erased but rather never born in the first place due to this path iden...
详细信息
Two processes of photon-pair creation can be arranged such that the paths of the emitted photons are identical. The path information is thereby not erased but rather never born in the first place due to this path identity. In addition to its implications for fundamental physics, this concept has recently led to a series of impactful discoveries in the fields of imaging, spectroscopy, and quantum information science. Here the idea of path identity is presented and a comprehensive review of recent developments is provided. Specifically, the concept of path identity is introduced based on three defining experimental ideas from the early 1990s. The three experiments have in common that they contain two photon-pair sources. The paths of one or both photons from the different sources overlap such that no measurement can recognize from which source they originate. A wide range of noteworthy quantum interference effects (at the single- or two-photon level), such as induced coherence, destructive interference of photon pairs, and entanglement generation, are subsequently described. Progress in the exploration of these ideas has stagnated and has gained momentum again only in the last few years. The focus of the review is the new development in the last few years that modified and generalized the ideas from the early 1990s. These developments are overviewed and explained under the same conceptual umbrella, which will help the community develop new applications and realize the foundational implications of this sleeping beauty.
We present the first observation of the Ωc0→Ω−μ+νμ decay and present measurements of the branching fraction ratios of the Ωc0→Ω−ℓ+νℓ decays compared to the reference mode Ωc0→Ω−π+, (ℓ=e or μ). This anal...
详细信息
We present the first observation of the Ωc0→Ω−μ+νμ decay and present measurements of the branching fraction ratios of the Ωc0→Ω−ℓ+νℓ decays compared to the reference mode Ωc0→Ω−π+, (ℓ=e or μ). This analysis is based on 89.5 fb−1, 711 fb−1, and 121.1 fb−1 data samples collected with the Belle detector at the KEKB asymmetric-energy e+e− collider at the center-of-mass energies of 10.52 GeV, 10.58 GeV, and 10.86 GeV, respectively. The Ωc0 signal yields are extracted by fitting MΩℓ and MΩπ spectra. The branching fraction ratios B(Ωc0→Ω−e+νe)/B(Ωc0→Ω−π+) and B(Ωc0→Ω−μ+νμ)/B(Ωc0→Ω−π+) are measured to be 1.98±0.13(stat)±0.08(syst) and 1.94±0.18(stat)±0.10(syst), respectively. The ratio of B(Ωc0→Ω−e+νe)/B(Ωc0→Ω−μ+νμ) is measured to be 1.02±0.10(stat)±0.02(syst), which is consistent with the expectation of lepton flavor universality.
We study the diffusive motion of a particle in a subharmonic potential of the form U(x) = |x|c (0 α(t) with 0 2(1 − 1/α) holds. We analyse the motion in terms of the mean squared displacement and (when it exists) th...
详细信息
暂无评论