Alkalinity control in sludge propels the conversion of concrete slurry waste into micro- and nano-sized biogenic CaCO.

The utilization of for the production of bio-CaCO in concrete crack repair and strength enhancement has attracted considerable attention. However, microbial-induced calcium carbonate precipitation (MICP) has yet to be explored as a precedent with activated sludge. Here calcium sourced from concrete slurry waste (CSW) and carbon from sludge microbial β-oxidation under alkaline were used to generate micro/nano CaCO.

Enhanced removal of nano-oil droplets utilizing polysilicate aluminum ferric (PSAF): Leveraging bridging and non-polar surface advantages.

Hydraulic oil leaks during mechanical maintenance, resulting in flushing wastewater contaminated with dispersed nano-oil droplets. In this study, 75 mg L of polysilicate aluminum ferric (PSAF) was stirred at 350 rpm and the optimal chemical oxygen demand (COD) removal was 71%. The increase of PSAF led to more hydrolysis of Fe, and 1,175 cm hydroxyl bridged with negative oil droplets.

The influence of different levels of physical activity and sports performance on the accuracy of dynamic lower limbs balance assessment among Chinese physical education college students.

Balance ability is the basis of human actions. Improving the accuracy of dynamic balance assessment can increase the efficiency of sports injury prediction. This study aimed to investigate how physical activity and sports performance affect the dynamic balance ability of lower limbs and validate whether the Lower Quarter Y-Balance Test (YBT-LQ) is a reliable predictor of sports injury risk among Chinese physical education college students.

Tunable high-sensitivity sensing detector based on Bulk Dirac semimetal.

This paper proposes a tunable sensing detector based on Bulk Dirac semimetals (BDS). The bottom-middle-top structure of the detector is a metal-dielectric-Dirac semimetal. The designed detector is simulated in the frequency domain by the finite element method (FEM).

PET/Ag NW/PMMA transparent electromagnetic interference shielding films with high stability and flexibility.

Flexible transparent electromagnetic interference (EMI) shielding materials in visual windows are essential for the innovation of optoelectronic devices. Herein, we demonstrate the fabrication of flexible EMI shielding films based on silver nanowires (Ag NWs) and polymethyl methacrylate (PMMA). The purified Ag NWs are uniform in size and morphology, with aspect ratio over 1000.

Self-Catalyzed Phototandem Perfluoroalkylation/Cyclization of Unactivated Alkenes: Synthesis of Perfluoroalkyl-Substituted Quinazolinones.

A novel visible-light-induced radical tandem trifluoromethylation/cyclization of unactivated alkenes with sodium perfluoroalkanesulfinates (R = CF, CF, CF, CF, CF) under air atmosphere has been developed. A range of quinazolinones containing unactivated alkene moiety and sodium perfluoroalkanesulfinates were compatible with this transformation, leading to a variety of perfluoroalkyl-substituted quinazoline alkaloids. Remarkably, the experiment can be carried out without any metal catalyst, strong oxidant, or external photosensitizer.

Visible Light/Tertiary Amine Promoted Synergistic Hydroxydifluoroacetamidation of Unactivated Alkenes under Air.

An efficient and novel method for regioselective hydroxydifluoroacetamidation of alkenes with bromodifluoroacetamides has been achieved via a tandem radical pathway mediated by photoredox catalysis under metal-free conditions. This transformation proceeded smoothly in the presence of Rhodamine 6G, affording a series of α,α-difluoro-γ-hydroxyacetamides in moderate to excellent yields. The significant advantages of this protocol are the low-cost photocatalyst, readily available starting materials, synthetic convenience, and wide functional group compatibility.

Structure elucidation of a new terpenylated coumarin with the combination of CASE algorithms and DFT/NMR approach.

One new terpenylated coumarin ailanthuscoumarin was isolated from the root barks of (Mill.) Swingle. The high oxidation of the compound led to the difficulty of structure elucidation by 2D-NMR spectra.

Highly efficient and stable transparent electromagnetic interference shielding films based on silver nanowires.

Transparent electromagnetic interference (EMI) shielding materials with high optical transmittance and outstanding shielding effectiveness (SE) for optoelectronic devices in visual windows are urgently needed. Herein, we demonstrate the preparation of a transparent EMI shielding film based on silver nanowires (Ag NWs) via a facile Mayer-rod coating method. The electrical conductivity and transmittance of Ag NW-based films can be greatly improved through treatment with NaBH and the lamination of poly(diallyldimethyl-ammonium chloride).

Terpenylated coumarins from the root bark of Ailanthus altissima (Mill.) Swingle.

Seven undescribed terpenylated coumarins, named altissimacoumarin I-O, together with seven known compounds, altissimacoumarin C, altissimacoumarin E, altissimacoumarin G, altissimacoumarin H, puberulin, 7-(3-Methyl-2-butenyloxy)-6-methoxycoumarin and artelin were isolated from the root bark of Ailanthus altissima (Mill.) Swingle. Their structures were elucidated by comprehensive spectra data analysis, NMR calculation, DP4+ analysis and ACD/Structure Elucidator software simulation.

Benzoic acid derivatives from the root barks of .

Two new benzoic acid derivatives (-), together with four known compounds (-) have been isolated from the -BuOH soluble fraction of ethanolic extract from . The gross structures of the new compounds were deduced by detailed spectroscopic analysis including HRESIMS and 1D/2D NMR spectroscopy. The stereochemistry of was determined by modified Mosher's method.

Enantiomeric 8,4'-type oxyneolignans from the root barks of Ailanthus altissima (Mill.) Swingle and their neuroprotective effects against HO-induced SH-SY5Y cells injury.

Ailanthus altissima Swingle is a deciduous tree, belonging to the Simaroubaceae family. Phytochemical investigation of the root barks of A. altissima showed the presence of eight pairs of enantiomeric 8,4'-type oxyneolignans (1a/1b-8a/8b) including nine undescribed compounds (1b, 2a, 3a/3b, 4a/4b, 5b, 7b, 8a).

Triterpenes from (Jack) I.C.N. with anti--amyloid aggregation activity.

A new triterpene as well as five known compounds were isolated from the twigs and leaves of (Jack) I.C.N.

Construction of C(sp )-C(sp ) Bond between Quinoxalin-2(1H)-ones and N-Hydroxyphthalimide Esters via Photocatalytic Decarboxylative Coupling.

A novel visible-light-driven decarboxylative coupling of alkyl N-hydroxyphthalimide esters (NHP esters) with quinoxalin-2(1H)-ones has been developed. This C(sp )-C(sp ) bond-forming transformation exhibits excellent substrate generality with respect to both the coupling partners. Of note, a series of 3-primary alkyl-substituted quinoxalin-2(1H)-ones that were difficult to synthesize by previous methods could be obtained in moderate to excellent yields.

The identification of phenylpropanoids isolated from the root bark of (Mill.) Swingle.

Chemical investigation of 75% EtOH exact of the root bark of (Mill.) Swingle led to the isolation and identification of two new phenylpropanoids (-), along with six known compounds (-). Their chemical structures were elucidated by extensive spectroscopic data analyses including NMR experiments and HRESIMS analyses, as well as computer-assisted structure elucidation software (ACD/Spectrus Processor).

Visible-Light-Induced Regioselective Alkylation of Coumarins via Decarboxylative Coupling with N-Hydroxyphthalimide Esters.

An efficient photocatalytic decarboxylative 3-position alkylation of coumarins by using alkyl N-hydroxyphthalimide esters as alkylation reagents has been developed. A variety of NHP esters derived from aliphatic carboxylic acids (primary, secondary, and tertiary) has been proved to be tolerated for this decarboxylation process, affording a broad scope of 3-alkylated coumarin derivatives in moderate to excellent yields. This protocol was highlighted by its mild conditions, readily available starting materials, operational simplicity, and wide functional group tolerance.

Chiral resolution and bioactivity of enantiomeric furofuran lignans from Maxim.

Enantiomers have generally been reported mostly for racemic mixtures with a 1:1 ratio, as in that case there were weak Cotton effects in the ECD spectrum and negligible optical rotations. A furofuran lignan (sesamin), with a remarkable rotation and significant Cotton effects, was isolated from Maxim. Subsequently, sesamin was resolved by chiral HPLC to afford a pair of enantiomers, (+)-sesamin () and (-)-sesamin (), in a ratio of approximately 1:3.

Anti--amyloid aggregation activity of enantiomeric furolactone-type lignans from (Jack) I.C.N.

The phytochemical investigation on the twigs and leaves of (Jack) I.C.N.

Racemic phenylpropanoids from the root barks of Ailanthus altissima (Mill.) Swingle with cytotoxicity against hepatoma cells.

Four pairs of racemic phenylpropanoids (1a/1b-4a/4b), including five new compounds (1a/1b, 2a, 3a, and 4a) were obtained from the root barks of Ailanthus altissima (Mill.) Swingle. Their structures were determined by comprehensive spectroscopic analyses.

Network pharmacology-based screening of the active ingredients and potential targets of the genus of marthae (Britton & Killip) Niezgoda & Nevl for application to Alzheimer's disease.

Alzheimer's disease (AD) is a progressive neurodegenerative disorder associated with synaptic dysfunction, pathological accumulation of -amyloid (A), and neuronal loss. Given the prevalence of AD and the lack of effective long-term therapies, there is a pressing need to discover viable leads that can be developed into clinically approved drugs with disease-modifying effects. The analysis of current reported literatures confirms the importance of the plants of genus as candidate against AD.

Investigation of chemical constituents of safflower and their tyrosinase inhibitory activity.

Investigation on bioactive chemical constituents of safflower led to the isolation of 10 compounds from the aqueous extract, including a new alkaloid (1), a new glucopyranoside (2), and 8 known compounds (3-10). The structures of two new compounds were elucidated on the basis of extensive spectral analyses, including 1D, 2D-NMR and HRESIMS. Biological research on the isolates indicated that compounds 3, 4 and 9 remarkably inhibited tyrosinase with IC at 0.

Flavonoids and their derivatives with β-amyloid aggregation inhibitory activity from the leaves and twigs of Pithecellobium clypearia Benth.

To explore potential compounds with marked effect on Alzheimer's disease (AD) in Pithecellobium clypearia Benth., nineteen compounds (1-19) were obtained, including two new flavonoid derivatives, named pithecellobiumol A (1) and pithecellobiumol B (2) and 17 flavonoids (3-19). Their structures were elucidated based on 1D and 2D-NMR spectra as well as HR-ESI-MS data.