Solid-Liquid Interfacial Hydrogen Bond-Mediated Mass Transfer Toward Industrial Water Electrolysis.

The rapid migration of reactive ions across the electrolyte-catalytic sites interface is crucial in various catalytic processes. Herein, we introduce hydrogen bonds to bridge the intrinsic gap at the catalyst-electrolyte interface, mediating the diffusion of hydroxide ions. We implemented the aforementioned concept by a library of oxyanions functionalized NiCo OOH, wherein the oxygen atom within the oxyanions established hydrogen bonds with HO molecules in the electrolyte.

Temporal and spatial distributions of calanoid copepod eggs in intertidal sediment of a tropical coastal lagoon.

This study examined the temporal and spatial distributions of calanoid copepod eggs in the intertidal sediment of Tapong Bay, a tropical lagoon in southwestern Taiwan. Copepod and sediment samples were collected from five stations across dry, rainy, and post-rainy seasons in 2020-2021, alongside measurements of salinity, temperature, and precipitation. Benthic calanoid egg abundance in sediment was estimated using a sucrose flotation protocol, while the abundances of ready-to-hatch egg- and resting egg-derived copepods were assessed through experimental incubations.

Boosting Sensitivity of Cellulose Pressure Sensor via Hierarchically Porous Structure.

Pressure sensors are essential for a wide range of applications, including health monitoring, industrial diagnostics, etc. However, achieving both high sensitivity and mechanical ability to withstand high pressure in a single material remains a significant challenge. This study introduces a high-performance cellulose hydrogel inspired by the biomimetic layered porous structure of human skin.

Pathogens and Prognosis of Deep Neck Infection in Patients With Liver Cirrhosis.

Objective: This study aims to investigate the differences in pathogenic bacterial spectra between patients with deep neck infection (DNI) with and without liver cirrhosis (LC). The goal is to identify specific pathogens prevalent in LC-DNI to guide the selection of empiric antibiotics, improving treatment outcomes and prognosis.

Study Design: This is a retrospective study.

Thermal insulating cellulose/wood foam for passive radiant cooling.

Passive cooling permits thermal management of near-zero energy consumption and low CO emissions. Herein, cellulose/wood chip composite foam (CWF) with anisotropic porous structure was prepared via freeze-casting strategy. The CWF displayed an average reflectance of up to 95.

Coordinatively stiffen and toughen polymeric gels via the synergy of crystal-domain cross-linking and chelation cross-linking.

Polymer gels have been widely used in flexible electronics, soft machines and impact protection materials. Conventional gels usually suffer from the inherent conflict between stiffness and toughness, severely hampering their applications. This work proposes a facile yet versatile strategy to break through this trade-off via the synergistic effect of crystal-domain cross-linking and chelation cross-linking, without the need for specific structure design or adding other reinforcements.

Establishing an astaxanthin-rich live feed strain of Pseudodiaptomus annandalei.

This study aimed to establish an astaxanthin-rich strain of the calanoid copepod Pseudodiaptomus annandalei, through selective breeding based on RGB (red, green and blue) value, a parameter indicating color intensity. We evaluated the RGB value frequency distributions of the copepod populations, and selected individuals with the highest 10% and the lowest 10% RGB value over six generations. The RGB value, nauplii production, clutch interval and clutch number were assessed, and the genetic gain was calculated across generations (G-G).

Aqueous Cellulose Solution Adhesive.

In the context of sustainable development, research on a biomass-based adhesive without chemical modification as a substitute for petroleum-based adhesive is now crucial. It turns out to be challenging to guarantee a simple and sustainable method to produce high-quality adhesives and subsequently manufacture multifunctional composites. Herein, the inherent properties of cellulose were exploited to generate an adhesive based on a cellulose aqueous solution.

Chitin nanofibrils assisted 3D printing all-chitin hydrogels for wound dressing.

The direct ink writing technique used in 3D printing technology is generally applied to designing biomedical hydrogels. Herein, we proposed a strategy for preparing all-chitin-based inks for wound dressing via direct ink writing technique. The β-chitin nanofibers (MACNF) with a high aspect ratio were applied as a nanofiller to modulate the rheological properties of the alkaline dissolved chitin solution.

Janus Membrane with Intrafibrillarly Strontium-Apatite-Mineralized Collagen for Guided Bone Regeneration.

Commercial collagen membranes face difficulty in guided bone regeneration (GBR) due to the absence of hierarchical structural design, effective interface management, and diverse bioactivity. Herein, a Janus membrane called SrJM is developed that consists of a porous collagen face to enhance osteogenic function and a dense face to maintain barrier function. Specifically, biomimetic intrafibrillar mineralization of collagen with strontium apatite is realized by liquid precursors of amorphous strontium phosphate.

MXene-Mediated Cellulose Conductive Hydrogel with Ultrastretchability and Self-Healing Ability.

Constructing natural polymers such as cellulose, chitin, and chitosan into hydrogels with excellent stretchability and self-healing properties can greatly expand their applications but remains very challenging. Generally, the polysaccharide-based hydrogels have suffered from the trade-off between stiffness of the polysaccharide and stretchability due to the inherent nature. Thus, polysaccharide-based hydrogels (polysaccharides act as the matrix) with self-healing properties and excellent stretchability are scarcely reported.

Rationally designed cellulose hydrogel for an ultrasensitive pressure sensor.

Flexible pressure sensors with high sensitivity are required in fields such as human-machine interactions, electronic skin, and health tracking. In this work, we reported cellulose ion-conductive hydrogel (ICH) rationally designed from both nano and micron perspectives for ultrasensitive pressure sensors, a zero-waste approach, without involving soft components. By introducing low molecular weight cellulose and using the idea of a rough surface, the piezocapacitive sensitivity of the ICH was increased from 0.

Engineered Injectable Cell-Laden Chitin/Chitosan Hydrogel with Adhesion and Biodegradability for Calvarial Defect Regeneration.

Trade-off of high-strength and dynamic crosslinking of hydrogels remains an enormous challenge. Motivated by the self-healing property of biological tissues, the strategy of combining multiple dynamic bond mechanisms and a polysaccharide network is proposed to fabricate biomimetic hydrogels with sufficient mechanical strength, injectability, biodegradability, and self-healing property for bone reconstruction engineering. Stable acylhydrazone bonds endowed hydrogels with robust mechanical strength (>10 kPa).

The thermodynamics of enhanced dope stability of cellulose solution in NaOH solution by urea.

The addition of urea in pre-cooled alkali aqueous solution is known to improve the dope stability of cellulose solution. However, its thermodynamic mechanism at a molecular level is not fully understood yet. By using molecular dynamics simulation of an aqueous NaOH/urea/cellulose system using an empirical force field, we found that urea was concentrated in the first solvation shell of the cellulose chain stabilized mainly by dispersion interaction.

Chemical Burn-Induced Corrosive Epiglottitis in an Elderly Patient with Major Depression.

Acute epiglottitis (AE) is a potential emergency of the respiratory tract caused mainly by bacterial infection. However, nonbacterial infection causes, such as corrosive injuries, may result in death due to gastrointestinal perforation if a timely diagnosis is not available. We report the case of an elderly patient with an acute melancholic episode who encountered corrosive epiglottitis (CE) caused by accidental ingestion of hydrochloric acid and compare the features of CE and AE, including the immediate onset of symptoms, normal findings on blood tests, and endoscopy revealing pale swollen epiglottitis.

Euryale ferox stem-inspired anisotropic quaternized cellulose/xanthan-based antibacterial sponge with high absorbency and compressibility for noncompressible hemorrhage.

Uncontrollable hemorrhage from deep noncompressible wounds remains an intractable challenge. Herein, inspired by the euryale ferox stem which is capable of transporting water and nutrient substances efficiently along longitudinally aligned channels, an anisotropic sponge with rapidly liquid absorption capacity, excellent mechanical compressibility and antibacterial property based on quaternized cellulose (QC), xanthan gum (XG) and reduced graphene oxide (rGO), was constructed. The euryale ferox stem-like structure and multiple interactions, involving hydrogen bonding, electrostatic interaction and chemical crosslinking, endowed the sponge with excellent fatigue resistance, elasticity and efficient liquid absorption capacity.

Transparent, Ultra-Stretching, Tough, Adhesive Carboxyethyl Chitin/Polyacrylamide Hydrogel Toward High-Performance Soft Electronics.

To date, hydrogels have gained increasing attentions as a flexible conductive material in fabricating soft electronics. However, it remains a big challenge to integrate multiple functions into one gel that can be used widely under various conditions. Herein, a kind of multifunctional hydrogel with a combination of desirable characteristics, including remarkable transparency, high conductivity, ultra-stretchability, toughness, good fatigue resistance, and strong adhesive ability is presented, which was facilely fabricated through multiple noncovalent crosslinking strategy.

Targeting 4-1BB for tumor immunotherapy from bench to bedside.

Immune dysfunction has been proposed as a factor that may contribute to disease progression. Emerging evidence suggests that immunotherapy aims to abolish cancer progression by modulating the balance of the tumor microenvironment. 4-1BB (also known as CD137 and TNFRS9), a member of tumor necrosis factor receptor superfamily, has been validated as an extremely attractive and promising target for immunotherapy due to the upregulated expression in the tumor environment and its involvement in tumor progression.

Cellulose ionic conductor with tunable Seebeck coefficient for low-grade heat harvesting.

Natural polymer-based thermoelectric materials are significant for sustainable development because they can be used to directly harvest heat into electricity while avoiding the utilization of petroleum-based resources. Herein, cellulose ionic conductors were fabricated by using cellulose as the hydrogel matrix and cellulose solvents as the electrolytes. p-type and n-type thermoelectric generators (TEG) based on cellulose ionic conductor were obtained, with Seebeck coefficient of 2.

Electronic skin based on cellulose/KCl/sorbitol organohydrogel.

With the increasing interests in the fields of wearable devices, it is essential yet also challenging to develop electronic skin with customized functionalities, especially for harsh conditions. Herein, by using KCl as both anti-solvent for cellulose regeneration and ionic charge carrier in the cellulose gel network, cellulose/KCl/sorbitol organohydrogel (CKS) combining transparency (over 95% at 550 nm), stretchability (235%), high conductivity (3.88 S/m), and low temperature tolerance (-51.

Extracellular matrix-mimicking nanofibrous chitosan microspheres as cell micro-ark for tissue engineering.

In the present study, extracellular matrix (ECM)-mimicking nanofibrous chitosan microspheres (NCM) were developed via thermal induction of chitosan molecular chain from alkaline/urea aqueous solution. The regeneration of NCM from chitosan was proved to be physical process. The morphology of NCM could be precisely controlled by adjusting the initial solution concentration and the reaction temperature.

High-performance triboelectric nanogenerator based on chitin for mechanical-energy harvesting and self-powered sensing.

Environment issues and energy crisis call for eco-friendly, biodegradable and low-cost natural materials for the extensive application of distributed energy harvesting triboelectric nanogenerators (TENGs) and multi-functional self-powered sensors. Here, flexible, robust and transparent chitin films fabricated via non-freezing dissolution approach in KOH/urea were used as tribopositive material to assemble TENGs, which served as outstanding mechanical energy harvesters and multi-functional self-powered sensors. The tensile strength and elongation at break of the chitin film reached 84.