Ethanol solution as a disinfectant has been widely used in various ***,it has a significant bactericidal capability only when the volume fraction of ethanol is around 70%-75%.For such high concentration of ethanol sol...
详细信息
Ethanol solution as a disinfectant has been widely used in various ***,it has a significant bactericidal capability only when the volume fraction of ethanol is around 70%-75%.For such high concentration of ethanol solution,it has an irritating *** it is used for applications such as wound disinfection,it causes a stinging *** concentrations of ethanol solution are less irritating,but it is also less effective at killing *** this study,an idea for producing a green,efficient and less irritating disinfectant is *** is based on a plasma-activated low-concentration ethanol solution(PAES).It is found that the plasma-activated 10% volume fraction of ethanol solution can kill more than seven orders of magnitude of Escherichia coli,while the untreated 10% volume fraction of ethanol solution has no bactericidal ***,the PAES's activity remains unchanged after being stored at -20℃ for three *** investigation shows that new compositions including peracetic acid,peroxynitrite,hydrogen peroxide and acetic acid are detected in the PAES,which together are playing the main role of the excellent and prolonged bactericidal effect.
In order to evaluate the characteristics of SiC MOSFET under the mission profile of DC Circuit Breaker (DCCB), a complete DCCB test platform considering the RCD transfer loop and the MOV absorption loop is set up. Bas...
详细信息
Recently,charged aerosols are used widely in many applications,such as fog elimination,inactivation of airborne viruses and so *** pressure non‐equilibrium plasma(APNP)have become an efficient way to generate charged...
详细信息
Recently,charged aerosols are used widely in many applications,such as fog elimination,inactivation of airborne viruses and so *** pressure non‐equilibrium plasma(APNP)have become an efficient way to generate charged *** the traditional pin‐plate or wire‐plate APNP sources,the new APNP sources such as large scale corona discharge system and air plasma jet array are *** sources can increase the ion density in open air and generate adjustable large plasma plume,which are helpful in increasing the charging efficiency on *** the interactions between plasma and aerosols is quite complicated,the preliminary study suggests that the diffusion charging dominates aerosols below 0.1μm,field charging dominates aerosols larger than 1μm,and the photo charging also contributes to aerosols *** reactive charged aerosols have shown their potential in the artificial rain enhancement,biomedicine,and ma-terial ***,challenges and opportunities for theoretical,experimental,and application research in related cross‐disciplinary areas are presented to stimulate critical discussions and collaborations in the future.
Fast and accurate cable fault detection is the key to reduce economic losses and improve electrical system reliability. Broadband impedance spectroscopy (BIS) is a new type of cable fault location technology, but the ...
详细信息
Quasi-coherent micro-instabilities is one of the key topics of magnetic confinement fusion. This work focuses on the quasi-coherent spectra of ion temperature gradient(ITG) and trapped-electron-mode instabilities usin...
详细信息
Quasi-coherent micro-instabilities is one of the key topics of magnetic confinement fusion. This work focuses on the quasi-coherent spectra of ion temperature gradient(ITG) and trapped-electron-mode instabilities using newly developed far-forward collective scattering measurements within ohmic plasmas in the J-TEXT *** ITG mode is characterized by frequencies ranging from 30 to 100 k Hz and wavenumbers(k_(θρs)) less than 0.3. Beyond a critical plasma density threshold, the ITG mode undergoes a bifurcation, which is marked by a reduction in frequency and an enhancement in amplitude. Concurrently, enhancements in ion energy loss and degradation in confinement are observed. This ground-breaking discovery represents the first instance of direct experimental evidence that establishes a clear link between ITG instability and ion thermal transport.
During the breaking process, the erosion of anode contact greatly affects the result of high current vacuum breaking. Therefore, it is important to study the forming and transforming process of anode modes for improvi...
详细信息
As a promising method for fast ion diagnostics,collective Thomson scattering(CTS)can measure the one-dimensional velocity distribution of fast ions with high spatial and temporal *** feasibility of diagnosing fast ion...
详细信息
As a promising method for fast ion diagnostics,collective Thomson scattering(CTS)can measure the one-dimensional velocity distribution of fast ions with high spatial and temporal *** feasibility of diagnosing fast ions in a compact high-field tokamak by CTS was studied in this work,and the results showed that a wide range of probing frequencies could be applied.A high-frequency case and a low-frequency case were mainly considered for fast ion diagnostics in a compact high-field *** use of a high probing frequency could effectively avoid the refraction effect of the beams,while the application of a low probing frequency allows greater flexibility in the selection of scattering angle which may help to improve the spatial *** on typical plasma conditions(B_(0)=12.2 T,n_(e0)=4.3×10^(20)m^(-3),T_(e0)=22.2 keV,T_(i0)=19.8 keV)for a compact high-field tokamak,a220 GHz CTS diagnostic that utilizes a small scattering angle ofθ=30°and a 160 GHz CTS diagnostic that utilizes an orthogonal geometry were *** study showed that the high-frequency case could operate in a wider range of plasma conditions and provide more information on fast ions while the low-frequency case could achieve higher spatial resolution of the poloidal direction.
Distinction of weak and strong AC grids for emerging hierarchical-infeed LCC-UHVDC systems is important for planning and operation departments. However, accuracy of earlier distinction methods is limited as they were ...
详细信息
Distinction of weak and strong AC grids for emerging hierarchical-infeed LCC-UHVDC systems is important for planning and operation departments. However, accuracy of earlier distinction methods is limited as they were developed by empirical reasoning without rigorous theoretical analysis. Hence in this letter, hierarchical-infeed interactive effective short-circuit ratio (HIESCR) index is first used for strength evaluation of HIDC systems with complex inter-inverter interactions considered. Boundary HIESCR (BHIESCR) is also introduced in the proposed distinction method of weak and strong AC grids. That is, weak (or strong) AC grids are, respectively, identified when HIESCR is less (or greater) than BHIESCR. Second, it is shown BHIESCR remains almost unchanged as 3.0 versus various system parameters and rated operation variables based on rigorous theoretical analysis. This salient feature makes the proposed method more accurate than earlier methods. Finally, the proposed method is validated by simulations based on the PSCAD/EMTDC program.
To solve the problem of cooperative dispatching of wind-solar power stations and cascade hydropower stations along the coast of the basin, an optimization method of bundling of wind-solar-hydro (WSH) in the basin base...
详细信息
Lithium-ion batteries are crucial for electric vehicles and smart grids, yet their performance degrades with charge-discharge cycles, leading to reduced capacity and increased resistance. Predicting the Remaining Usef...
详细信息
暂无评论