Effects of simulated precipitation changes on soil respiration:Progress and prospects.

Soil respiration, the main pathway for transferring terrestrial carbon pool to atmospheric carbon pool, is profoundly affected by the intensification in global precipitation variability in the context of climate change. Nowadays, variable controlling methods and field manipulation experiments are two main methods widely used to investigate the effects of simulated precipitation changes on soil respiration. Yet, due to the heterogeneity of soil properties, vegetation types, and the magnitude of precipitation change, there is substantial inconsistency in the conclusions of simulated precipitation change effects on soil respiration.

Adhesive cryogel particles for bridging confined and irregular tissue defects.

Background: Reconstruction of damaged tissues requires both surface hemostasis and tissue bridging. Tissues with damage resulting from physical trauma or surgical treatments may have arbitrary surface topographies, making tissue bridging challenging.

Methods: This study proposes a tissue adhesive in the form of adhesive cryogel particles (ACPs) made from chitosan, acrylic acid, 1-Ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) and N-hydroxysuccinimide (NHS).

[Effects of simulated precipitation changes on plant community characteristics of wetland in the Yellow River Delta, China].

Under the changing climate scenario, changes in precipitation regimes are expected to alter soil water and salinity conditions, with consequences on the characteristics of plant community in estuarine wetland. Here, we used a six-year (2015-2020) precipitation manipulation experiment to examine how plant community characteristics responded to precipitation changes in the Yellow River Delta. The results showed that soil electrical conductivity significantly decreased, while soil moisture significantly increased with increasing precipitation.

Time-resolved fluorescence and chemometrics-assisted excitation-emission fluorescence for qualitative and quantitative analysis of scopoletin and scopolin in Erycibe obtusifolia Benth.

This paper presents a new strategy for qualitative identification of scopoletin and scopolin in Erycibe obtusifolia Benth using time-resolved (lifetimes) fluorescence and quantitative analysis with chemometrics-assisted excitation-emission matrix (EEM) fluorescence. Due to the significant spectral overlapping among analytes and interference, the use of the more selective time-resolved fluorescence is proposed for qualitative identification in quality control of traditional Chinese medicine (TCM) for the first time. Using the strategy of combining EEM fluorescence with second-order calibration method, i.

A facile water-stable MOF-based "off-on" fluorescent switch for label-free detection of dopamine in biological fluid.

As an emerging class of fluorescent probes, metal-organic frameworks (MOFs) have recently received great interest owing to their fascinating functional properties, intriguing tunable structures, high selectivity and good sensitivity. Herein, we present a novel strategy based on the application of a facile water-stable MOF {[Cd(μ-abtz)·2I]} (Abtz-CdI-MOF, abtz = 1-(4-aminobenzyl)-1,2,4-triazole) using powerful solvo-thermal synthetic techniques, which can serve as an "off-on" fluorescent switch for the label-free detection of dopamine (DA) without any additional surface modification and functionalization. The fluorescence signal of Abtz-CdI-MOF can be efficiently quenched by KMnO, and then restored by DA in an "off-on" mode.

Facile synthesis of red emitting 3-aminophenylboronic acid functionalized copper nanoclusters for rapid, selective and highly sensitive detection of glycoproteins.

As an emerging class of fluorescent probes, copper nanoclusters (Cu NCs) have been considered as an intriguing candidate for detecting biomoleculars due to their outstanding fluorescent properties, excellent biocompatibility and low cost. Herein, we fabricated bovine serum albumin (BSA) protected Cu NCs (BSA-Cu NCs) and further functionalized them with 3-aminophenylboronic acid (APBA) for selectively discerning glycoproteins. In aqueous solution, Cu(2+) ions were directly reduced into BSA-Cu NCs by hydrazine hydrate (N2H4·H2O) at room-temperature using BSA as the capping agent.