Passive cooling materials that spontaneously cool an object are promising choices for mitigating the global energy crisis. However, these effects usually weakened or lost when dust contaminates surface structure, greatly restricting their applications. In this work, a robust hierarchical porous polytetrafluoroethylene (PTFE) film with coral-like micro/nanostructures is generated by facile and efficient femtosecond laser ablation technique. Owing to its unique micro/nanostructures,...

A uniaxial strain-softening constitutive model for fiber-reinforced soils is developed based on the disturbed state concept (DSC). The response in relatively intact assumed to satisfy Duncan–Chang obtained from prepeak stress–strain curve, while fully adjusted satisfies linear by an extension of residual strength. apparent curve a weighted average derived two aforementioned curves disturbance function that acts as weight. peak and postpeak stable point are starting ending points disturbance,...

Frequent dry–wet cycles induced uneven settlement and slope failure of transportation infrastructures in the Loess Plateau China. Fiber reinforcement provides a method for solving these problems. In this study, digital image–based triaxial shear test system was adopted through which to study action on mechanical behavior mode basalt fiber–reinforced loess. The apparent cracks mesostructure fiber-reinforced loess after were observed by camera X-ray computed tomography technique (CT). Results...

Current human body cooling technologies aggravate the energy crisis and cause environmental issues, an efficient energy-saving personal comfort technology is critical. Many recent smart textiles involve complex time-consuming fabrication processes fail to achieve both drying functions. Herein, a hydrophobic/superhydrophilic Janus fabric was fabricated rapidly via one-step femtosecond laser direct writing technology, which allowed liquid transport exclusively from hydrophobic side...

The present study was conducted to investigate the effects of chitosan (CS)-Zn on intestinal morphology, mucosal epithelial cell apoptosis and immune function in weanling pigs. A total 150 barrows with a body weight 7·2 kg were randomly allocated into five groups. basal diet without Zn supplementation used as control other four groups fed supplemented 50 or 100 mg/kg CS-Zn, ZnSO 4 3000 ZnO, respectively. feeding trial lasted for 28 d. results showed that serum diamine oxidase activities, d...

Dry–wet cycles can cause significant deterioration of compacted loess and thus affect the safety fill slopes. The discrete element method (DEM) take into account non-homogeneous, discontinuous, anisotropic nature geotechnical medium, which is more capable reflecting mechanism process instability in slope stability analysis. Therefore, this paper proposes to use DEM analyze slopes under dry–wet cycles. Firstly, solve complex calibration problem between macro mesoscopic parameters models, an...

A Pre-swirl system is used to supply cooling air the rotating turbine blades where pressure and temperature of supplied crucial for blade cooling. test rig was designed simulate flow in a cover-plate system. Some important performance parameters pre-swirl were measured at different mass rate (Cw up 1.35 × 105), rotation speed (Maϕ 0.744) outlet (210 kPa 310 kPa). These include discharge coefficient nozzle, ratios, drop rotor work consumption. To get boost ratio drop, pressures temperatures...

<title>Abstract</title> The lower tensile strength of loess is an important cause geohazards such as landslides and ground fissures in areas. In this study, the uniaxial tests were conducted on basalt fiber-reinforced based digital image correlation method (DIC). Moreover, discrete element (DEM) was used to investigate local microscopic mechanism fiber-particle interaction. Results show that both peak stress strain enhanced after fiber reinforcement. Brittle fracture observed unreinforced...

Mitophagy, the cellular process that removes damaged mitochondria, plays a crucial role in maintaining normal cell functions. It is deeply involved entire of follicle development and associated with various ovarian diseases. This review aims to provide comprehensive overview mitophagy regulation, emphasizing its at different stages follicular development. Additionally, study illuminates relationship between diseases, including ovary aging (OA), primary insufficiency (POI), polycystic...

With the increasing demands on equipment accuracy, synchronous performance becomes more and significant for ultra-precision systems. In order to achieve nanometer-level accuracy millisecond synchronization in practice, a learning control (LSC) strategy has been proposed this research. Specifically, our research, LSC includes Genetic Algorithm (GA) tuning method Back Propagation (BP) neural network controller. Herein, GA designed optimize parameters of controllers each axis offline. enhance...

<title>Abstract</title> Dry-wet cycles can cause significant deterioration of compacted loess and thus affect the safety fill slopes. The discrete element method (DEM) take into account non-homogeneous, discontinuous, anisotropic nature geotechnical medium, which is more capable reflecting mechanism process instability in slope stability analysis. Therefore, this paper proposes to use DEM analyze slopes under dry-wet cycles. Firstly, solve complex calibration problem between macro mesoscopic...