The coupled disaster of coal spontaneous combustion and gas explosion in the goaf threatens mine safety production. In order to further study mechanism disasters provide theoretical basis for prevention control, multi-field evolutions key influencing factors within methane condition had been investigated based on special designed hot experimental platform numerical simulations. Results show that leakages ventilation air into is positively related intensity combustion, but negatively ranges...

TM4SF1, a member of the transmembrane 4 superfamily, is crucial for both healthy and malignant human tissues. The significant function TM4SF1 in incidence progression cancer has been widely recognized recent years. Although some achievements have made study effect on stemness hepatocellular carcinoma (HCC) its molecular basis are yet to be reported. We found through abundant vitro vivo experiments which expression was positively correlated with HCC. identified downstream protein MYH9 final...

In the olfactory bulb (OB), information represented by mitral/tufted cells (M/Ts) is extensively modulated local inhibitory interneurons before being transmitted to cortex. While crucial roles of cortical vasoactive-intestinal-peptide-expressing (VIP) have been studied, their precise function in OB remains elusive. Here, we identify synaptic connectivity VIP onto mitral (MCs) and demonstrate important role behaviors. Optogenetic activation reduced both spontaneous odor-evoked activity M/Ts...

Electric vehicles (EVs) have the advantages of low pollution, energy consumption, and high efficiency, so they are highly valued by governments, enterprises, consumers. However, promotion use electric is restricted to a certain extent because their limited range. This paper selects vehicle intercity medium- long-distance travel as research object, takes classical flow-capturing location problem theoretical basis for expressway network or national highway network. also considers driver’s...

Porcine epidemic diarrhea (PED) caused by porcine virus (PEDV) is one of the most devastating diseases in global pig industry due to its high mortality rate piglets. Maternal vaccines can effectively enhance gut-mammary gland-secretory IgA axis boost lactogenic immunity and passive protection nursing piglets against PEDV challenge. From 2017 2021, we collected 882 samples from 303 farms China investigate epidemiology PEDV. The result showed that about 52.15% (158/303) were positive for with...

In this work, a novel planar leaky-wave antenna (LWA) and its array are proposed presented for CubeSat communication applications. Using the substrate-integrated waveguide (SIW) technology, LWA is implemented by etching periodic fan-shaped slots on top of an SIW. These exhibit extraordinary circular polarization (CP) radiation in high efficiency over wide frequency band. Moreover, switching excitation ports, both left-handed (LH) right-handed (RH) CPs achieved beam steering range backward or...

Objectives: This study firstly aimed to explore predicting cognitive impairment at an early stage using a large population-based longitudinal survey of elderly Chinese people. The second aim was identify reversible factors which may help slow the rate decline in function over 3 years community. Methods: We included 12,280 people from four waves Longitudinal Healthy Longevity Survey (CLHLS), followed 2002 2014. version Mini-Mental State Examination (MMSE) used examine function. Six machine...

Land use changes under natural and anthropogenic driving factors have spatiotemporal ecological consequences, these need to be identified protect biodiversity the robustness of ecosystems. While factor research has mainly focused on impacts univariate statistical correlation, analysis compound correspondence between dynamic characteristics function evolution processes been ignored. On basis land change, ecosystem services process trajectories were linked characterized in this study. In...

Abstract High‐performance gas sensors are highly desirable for environmental monitoring, clinical medicine, and industrial production. Herein, a sensor with excellent sensing response at room temperature is presented based on zinc oxide/reduced graphene oxide (ZnO/rGO) composites. The ZnO/rGO composites various contents of rGO the pure ZnO successfully fabricated by facile hydrothermal method. Particularly, 1.5 mL exhibits highest in wide range from 5 ppb to 10 ppm NO 2 concentration its...

Abstract A triwavelength synchronously mode-locked erbium-doped fiber laser with black phosphorus (BP) was demonstrated. The BP proved to be not only an excellent saturable absorber (SA) but also a strong nonlinear material benefiting the stabilization of multiwavelength laser. worked for long time at three synchronous wavelengths 1557.2, 1557.7, and 1558.2 nm. autocorrelation trace 9.41 ps pulses showed interference beating 0.06 THz, corresponding period 16.37 ps. To best our knowledge,...

Porcine circovirus type 2 (PCV2) is the dominant causative agent of PCV2 systemic disease (PCV2-SD) in pigs. It can also associate with other diseases such as respiratory and enteric diseases, reproductive failure, porcine dermatitis nephropathy syndrome Currently, infection a considerable threat swine industry. Therefore, it great significance to prevent, control, accurately detect pig farms. Recombinase aided amplification (RAA) technology an isothermal nucleic acid that could rapidly...

Abstract Extremely large angular orbital momentum can be produced in non-central heavy-ion collisions, leading to a strong transverse polarization of partons that scatter through the quark-gluon plasma (QGP) due spin-orbital coupling. We develop perturbative approach describe formation and spacetime evolution quark inside QGP. Polarization from both initial hard scatterings interactions with QGP have been consistently described using quark-potential scattering approach, which has coupled...

In this work, a novel leaky-wave antenna (LWA) with Archimedean spiral slots is proposed for realizing high radiation efficiency and stable gain performance in both frequency-controlled fixed-frequency beam-scanning applications. The structural feature of the slot privileges LWA properties easy impedance matching leakage rate, because it avoids strong reflection from large-size that commonly used design rate. bandwidths final designed Ka-band defined by larger than 90% 80% are 13% 25%,...

A novel fixed-frequency beam switchable dual-beam antenna array is presented, which consists five leaky-wave (LWA) elements designed on substrate integrated waveguide (SIW) and together a common substrate. The LWAs work fundamental wave -1th spatial harmonic simultaneously excite two symmetrical radiation beams in forward backward direction respectively. In order to realize switching, three voltage-driven radio frequency chip switches (CSW-RFs) are used behind the aperture. Since periodic...

The ability of fragile ecosystems alpine regions to adapt and thrive under warming nitrogen deposition is a pressing conservation concern. lack information on how these respond the combined impacts elevated levels climate limits sustainable management approaches grasslands. In this study, we experimented using completely random blocked design examine effects aboveground biomass diversity grassland plant communities. experiment was carried out from 2015 2018 in four vegetation types, e.g.,...

In the present work, potential hazards in mining goafs of multi-component gas explosions coupled with coal spontaneous combustion were systematically analyzed using both an experimental and numerical method. Programmed heating experiments show that many kinds combustible gaseous products (CH4, CO, C2H6 C2H4) are released during oxidation process under-simulated goaf conditions. The generation rate each increases significantly after 200°C reaches a peak value at about 400°C ~ 500°C. According...

Micro bunched electron beams with periodic longitudinal density modulation at optical wavelengths give rise to coherent light emission. In this paper, we show attosecond micro beam generation and acceleration in laser-plasma wakefield via particle-in-cell simulations. Due the near-threshold ionization drive laser, electrons phase-dependent distributions are non-linearly mapped discrete final phase spaces. Electrons can preserve initial bunching structure during acceleration, leading an bunch...

A novel leaky-wave antenna (LWA) array capable of bilateral beamforming is investigated for applications in indoor and short-distance mobile communications. The designed on a double-layer substrate-integrated waveguide (SIW) with multiport feeding network. upper layer four-port SIW tapered open stopband suppression structure two radiating slot arrays. By adjusting the periods widths slots, arrays radiate different directions, their radiation fields satisfy cosecant-squared distribution....