We report here a narrowband high-spectral resolution sodium temperature/wind lidar recently developed at the University of Science and Technology China (USTC) in Hefei, (31.5 °N, 117 °E). Patterned after Colorado State (CSU) with dye laser-based transmitter, USTC was deployed number technical improvements that facilitate automation ease operation; these include home constructed pulsed amplifier (PDA), beam-steering system, star-tracking program, an electronic timing control. With averaged...

Jiang Tang Xiao Ke (JTXK) granule, a Chinese herbal formula, has been used clinically to treat type 2 diabetes (T2DM) for decades. Our previous studies showed that JTXK granule exhibited anti-diabetic and anti-oxidative functions in experimental diabetic rats induced by high fat diet streptozotocin. However, the underlying mechanisms remain poorly understood. Herein, we aimed investigate therapeutic effect of on T2DM KKAy mice possible associations with skeletal muscle current study. results...

A regional dust storm was observed in the northern spring of Martian Year 35, a period characterized by relatively cold and clear atmosphere. Satellite observations general circulation model simulations indicate that atmospheric temperature response to this early closely resembles an equatorial counterpart responses typically during high loading season. Atmospheric heating dust-lifting region primarily driven shortwave radiative particles. Anomalous cooling mesosphere southern troposphere...

The number of rice leaves largely reflects the growth stage and health status rice. However, current leaf counting method is time-consuming laborious, with low accuracy poor efficiency, which difficult to meet needs monitoring. This study proposes a field detection based on an improved YOLOv5s model. First, we added high-resolution layer removed original low-resolution layer, using K-Means++ clustering algorithm reset anchor box sizes, enhancing model's ability identify small tip targets...

We developed a mobile ozone differential absorption lidar system to simultaneously measure the vertical profiles of tropospheric and stratospheric from an altitude ~5 50 km. The emits four laser beams at wavelength 289 nm, 299 308 nm 355 receives their corresponding Mie/Rayleigh backscattering return signals, two N2 Raman signals 332 387 shifted respectively. An assembled telescope array with 1.25-m telescopes (effective diameter > 2 m) collects Rayleigh 308/332 355/387 nm. This is currently...

To observe the effect of ginsenoside Rb1, salvianolic acid B and their combination on glucolipid metabolism structural changes gut microbiota.Eight-week-old C57BL/6J mice were fed 45% high-fat diet to induce obesity. The obese randomly divided into four groups, Con group as model control, Rb1 (Rb1) group, (SalB) Rb1+ (Rb1SalB) group. Mice in SalB Rb1SalB treated by gavage with two ingredients, respectively. While given same amount sterile water. intervention lasted 8 weeks. Body weight...

The natural regeneration of Larix gmelinii plantations plays a pivotal role in rehabilitating ecosystem services Northeast China’s degraded forests. However, mechanistic linkages between soil aggregate nutrient fluxes and fungal community assembly remain poorly constrained. Combining space-for-time substitution with particle-size fractionation high-throughput sequencing, this study examined successional trajectories across Langxiang National Nature Reserve to resolve nutrient–fungal...

The oncogenic role and underlying mechanism of PRMT5 in pancreatic ductal adenocarcinoma (PAAD) remained to be elucidated. In this study, we aimed investigate the role, molecular mechanisms, potential therapeutic value PAAD. was significantly upregulated cancer than adjacent nontumor pancreas, which positively correlated with poor prognosis. Genetic pharmacological inhibition suppressed PAAD proliferation vitro vivo, exhibiting promising effect vivo. Mechanistically, directly bound promoter...

For the cloud cavitation around slender axisymmetric projectiles, a two-dimensional (2D) numerical method was based on mixture approach with Singhal model and modified renormalization-group (RNG) k–ε turbulence model, three-dimensional (3D) established large-eddy simulation (LES) volume of fraction (VOF) approach. The commercial computational fluid dynamic (CFD) software fluent is used for 2D simulation, open source code OpenFOAM adopted 3D calculation. Experimental results were presented...

A scaled underwater launch system based on the stress wave theory and slip Hopkinson pressure bar (SHPB) technique is developed to study phenomenon of cavitations other hydrodynamic features high-speed submerged bodies. The present can achieve a transient acceleration in water instead long-time outside water. projectile obtain maximum speed 30 m/s about 200 μs by SHPB launcher. cavitation characteristics stage deceleration are captured camera. processes inception, development collapse also...

A new shedding phenomenon of ventilated partial cavitations is observed around an axisymmetric projectile in a horizontal launching experiment. The experiment system established based on SHPB and high speed photography. numerical simulation carried out the homogeneous mixture approach, its predicted evolutions cavities are compared with experimental results. cavity breaks off by interaction between gas injection re-entry jet at middle location projectile, which obviously different from...

Abstract. The University of Science and Technology China narrowband sodium temperature wind lidar, located in Hefei, (32∘ N, 117∘ E), has made routine nighttime measurements since January 2012. A total 154 nights (∼ 1400 h) vertical profiles temperature, density, zonal 83 800 flux gravity wave (GW) momentum the mesopause region (80–105 km) were obtained during period from 2012 to 2016. For it is most likely that diurnal tide dominates below 100 km spring, while semidiurnal above throughout...

Inlet and outlet boundary conditions (BCs) play an important role in newly emerged image-based computational hemodynamics for blood flows human arteries anatomically extracted from medical images. We developed physiological inlet BCs based on patients’ data integrated them into the volumetric lattice Boltzmann method. The BC is a pulsatile paraboloidal velocity profile, which fits real arterial shape, constructed Doppler waveform. of each pressure calculated three-element Windkessel model,...

A multiple sub-pupil ultra-spectral imaging system designed with a single spectrometer and detector can simultaneously detect multiple-channel spectra ultra-high spectral resolution. However, due to using prism in the system's front end, nonlinear dispersion introduces line tilt spectra. This phenomenon lead bias final data. To eliminate this issue, we propose new design by introducing second correct system. The angle of generated first is derived. It provides theoretical basis for...

Abstract Utilizing atmospheric temperature observed from Mars Years 33–36 by the imaging ultraviolet spectrograph (IUVS) onboard atmosphere and volatile evolution (MAVEN) climate sounder (MCS) Reconnaissance Orbiter (MRO), we derive diurnal semidiurnal thermal tides 30 to 160 km. Vertical phase velocities of migrating indicate their upward propagation above 100 km during dust season (solar longitude, Ls 240°–300°). During non‐dust (Ls 30°–150°), eastward wavenumber 2 (DE2) 3 (DE3) can...

A multiple sub-pupil ultra-spectral imager system for simultaneous detection of substances is proposed. By employing pupil separation prisms and grating multilevel spectra, the achieves three spectral channels with a single spectrometer detector, featuring an ultra-high resolution 0.1 nm. However, due to channels, suffers from significant stray light issues. In response this problem, UV optical-machinery model constructed in article. The main sources are determined through theoretical...

Abstract The University of Science and Technology China sodium temperature/wind lidar observed a strong zonal wind shear (~60 m/s/km) near 98 km between 1315 1330 UT on 29 July 2013 cooling 96–100 (above warming 90–95 km) 1430 UT. This suggests possible gravity wave (GW) breaking event. Comparison the results with observations from nearby meteor radar satellite indicated that GW likely broke down over large horizontal area. In addition, number density suddenly increased 10–12 times (∼13,...