Advances in natural biomacromolecule-based Janus materials: preparation, applications and future prospects in food science.

This review provides an in-depth exploration of Janus materials based on natural biomacromolecules (polysaccharides, proteins, and lipids). The unique asymmetric structure and multifunctionality of Janus materials endow them with broad application potential in food science and beyond. In terms of preparation, the review details several cutting-edge methods, including Pickering emulsions, asymmetric acylation, one-pot methods, microfluidics, electrospinning, and electrospraying, which collectively support the efficient synthesis and functionalization of Janus materials.

Ternary Synthon Strategy for 1,3,5-Trisubstituted Benzenes via [3 + 3] Benzannulation of Propargyl Alcohols.

The efficient synthesis of polysubstituted benzenes is an important goal in organic chemistry, yet the synthesis of 1,3,5-trisubstituted benzene derivatives remains challenging due to the absence of robust and efficient synthetic methods. Organic peroxides, typically employed as oxidants or monosynthons in organic reactions, have never been explored as multiple synthons, marking a void in the current research landscape. Herein, we report the first synthesis of 1,3,5-trisubstituted benzene derivatives under metal-free catalytic conditions using a [3 + 3] benzannulation strategy of propargyl alcohols with organic peroxides as three-carbon synthons.

Efficient direction-independent 3D spiral fog collector.

Inspired by the natural structures of cacti and desert beetles, a novel three-dimensional (3D) high-efficiency fog collector is proposed. This design integrates a unique macro-structural configuration with a surface wettability gradient that remains independent of the fog flow direction. The fog collector adopts an integral spiral structure, with superhydrophilic triangular protrusions uniformly distributed across its surface.

Biomimetic high-efficiency fog collector based on fractal spiral structure.

Fog collection provides a promising solution to the freshwater shortage. However, the efficiency of conventional fog collection apparatus is significantly reduced under the complex and variable natural conditions. Furthermore, fog collectors are usually plagued by intricate designs and inadequate durability, resulting in degradation of their structural and surface integrity over time.

Superhydrophobic Bulgy Windmill for Synchronous Efficient Fog Collection and Power Generation.

The shortage of freshwater resources is a serious problem faced by mankind in the 21st century. To maximize the acquisition of freshwater resources, numerous fog collectors have been constructed. In the process of fog collection accompanied by the movement of the wind, the mechanical energy brought about by the wind is often ignored.

Fe-Catalyzed Selective Formal Insertion of Diazo Compounds into C(sp)-C(sp) Bonds of Propargyl Alcohols: Access to Alkyne-Substituted All-Carbon Quaternary Centers.

The construction of all-carbon quaternary centers, especially those containing an alkyne-substituted framework, represents an important challenge in organic synthesis. Here we present a novel Fe-catalyzed selective formal insertion of diazo compounds into C(sp)-C(sp) bonds of propargyl alcohols under mild conditions that enables the streamlined construction of alkyne-substituted all-carbon quaternary centers. This unique strategy starts with in situ generation of an ester group in the presence of carboxylic acids, followed by insertion of metal-carbene into C(sp)-C(sp) bonds, which may open up a new reaction mode for exploring metal-carbene insertion into acyclic C-C bonds.

HKF-SVR Optimized by Krill Herd Algorithm for Coaxial Bearings Performance Degradation Prediction.

In real industrial applications, bearings in pairs or even more are often mounted on the same shaft. So the collected vibration signal is actually a mixed signal from multiple bearings. In this study, a method based on Hybrid Kernel Function-Support Vector Regression (HKF-SVR) whose parameters are optimized by Krill Herd (KH) algorithm was introduced for bearing performance degradation prediction in this situation.

A coefficient-free and continuous blood pressure estimation method based on the arterial lumen area model.

Oscillometry is the most popular technique for automatic blood pressure (BP) estimation. This method relies on recording the cuff deflation curve (CDC) from a high suprasystolic BP (SSBP) to a low subdiastolic BP (SDBP) and is very sensitive to noise caused by breathing, motion artifacts, muscle contraction and the environment. We developed a unified BP estimation method involving two integrated sub-procedures based on the arterial lumen area (ALA) model and applied it for continuous BP measurement.