Decorating Pd-Au Nanodots Around Porous InO Nanocubes for Tolerant H Sensing Against Switching Response and HS Poisoning.

With the recently-booming hydrogen (H) economy by green H as the energy carriers and the newly-emerged exhaled diagnosis by human organ-metabolized H as a biomarker, H sensing is simultaneously required with fast response, low detection limit, and tolerant stability against humidity, switching, and poisoning. Here, reliable H sensing has been developed by utilizing indium oxide nanocubes decorated with palladium and gold nanodots (Pd-Au NDs/InO NCBs), which have been synthesized by combined hydrothermal reaction, annealing, and chemical bath deposition. As-prepared Pd-Au NDs/InO NCBs are observed with surface-enriched NDs and nanopores.

Enhancement of electrokinetic-phytoremediation by Ophiopogon japonicus: stimulation of electrokinetic on root system and improvement of polycyclic aromatic hydrocarbon degradation.

Root systems are sensitive to voltage and tend to improve the degradation of organic pollutants by promoting the root exudates and increasing microbial enzyme activity in the rhizosphere under the effect of electrokinetic. In this study, electrokinetic-assisted phytoremediation (EKPR) was applied for the remediation of soil containing phenanthrene (PHE) and pyrene (PYR). Direct current (DC) voltage (1 V cm) was applied across the soils for 30 days following 3 treatment schedules (0 h, 4 h, and 12 h per day), referred to as treatments EK0, EK4, and EK12.

Combined effects of fluoroquinolone antibiotics and organophosphate flame retardants on Microcystis aeruginosa.

As freshwater harmful algal blooms continue to rise in frequency and severity, increasing focus is made on the effects of mixed pollutants and the dominant cyanobacterial species Microcystis aeruginosa (M. aeruginosa). However, few studies have investigated whether M.

Distribution, sources and risk assessment of PAHs in soil from the water level fluctuation zone of Xiangxi Bay, Three Gorges Reservoir.

Information on PAH distribution in the water level fluctuation zone (WLFZ) of Three Gorges Reservoir is limited. In this study, we investigated PAH distribution and sources and assessed PAH risks, over one annual water level fluctuation cycle (June 2017-June 2018) at four elevations spanning the WLFZ (145 m, 155 m, 165 m and 175 m) at seven locations in the water level fluctuation zone along Xiangxi River. The mean total PAH concentration in June 2018 (953 ng g) was significantly higher than in June 2017 (494 ng g), and the horizontal and vertical distributions of PAHs changed significantly.

Heavy metal accumulation and health risk assessment of crayfish collected from cultivated and uncultivated ponds in the Middle Reach of Yangtze River.

Crayfish, an aquatic food consumed globally, has been reported to accumulate heavy metal. To assess the health risk to the crayfish-consuming population, we investigated heavy metals (Cu, Pb, Zn, Fe, Mn, Cd, Cr, Ba, and As) in crayfish tissues (exoskeleton, abdominal muscle, gills, and hepatopancreas) and sediments from uncultivated and cultivated ponds in the middle reach of the Yangtze River. The metals, except for As, were measured by Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES) and As was measured by atomic fluorescence spectrometry.

Nano-SiO combined with a surfactant enhanced phenanthrene phytoremediation by Erigeron annuus (L.) Pers.

The objective of this experiment was to evaluate the effects of Triton X-100 (1000 mg kg) and nano-SiO (500 mg kg) on Erigeron annuus (L.) Pers. grown in phenanthrene spiked soil (150 mg kg) for 60 days.

Characteristics of growth and microcystin production of Microcystis aeruginosa exposed to low concentrations of naphthalene and phenanthrene under different pH values.

Here, Microcystis aeruginosa (M. aeruginosa) was studied to analyze the effects of 0.5 mg L naphthalene and 0.

Metasurface generated polarization insensitive Fano resonance for high-performance refractive index sensing.

A refractive index sensor can provide refractive index measurement and continuously monitor a dynamic process. Plasmonic nanostructure based sensors suffer from severe metal losses in the optical range, leading to the performance degradation. We design and numerically analyze a high-performance refractive index sensor based on the Fano resonance generated by a dielectric metasurface.

Effects of lead and cadmium on photosynthesis in and assessment of phytoremediation potential.

This study assessed the effects of Pb (0, 200, 500, 1000 mg kg) and Cd (0, 5, 15, 30, 50 mg kg) on photosynthesis in (), as well as the potential for phytoremediation by pot-culture experiment. Exposure to Pb/Cd produced a concentration-dependent decrease in biomass and all photosynthesis parameters, except for non-photochemical quenching, which increased with the metal concentration. The metals accumulated more in roots compared to shoots.

Selenium enhanced phytoremediation of diesel contaminated soil by Alternanthera philoxeroides.

Using a 60-day pot culture experiment, we investigated the effect of selenium on phytoremediation of soil containing high-level diesel by Alternanthera philoxeroides (alligator weed). Diesel (20 g kg) decreased the growth of A. philoxeroides and induced oxidative stress, as indicated by tissue levels of hydrogen peroxide (HO) and malondialdehyde (MDA).

Selenium alleviates phytotoxicity of phenanthrene and pyrene in Alternanthera Philoxeroides.

To investigate if selenium can alleviate phytotoxicity of phenanthrene and pyrene, two high molecular weight (HMW) PAHs (polycyclic aromatic hydrocarbons) in Alternanthera philoxeroides are considered. A 60-day pot-culture experiment was carried out to assess the effects of selenium (0.5 mg Se·kg soil) on A.

Se enhanced phytoremediation of diesel in soil by Trifolium repens.

A pot-culture experiment was conducted to assess the effects of selenium (Se) (0.5 mg kg) on Trifolium repens exposed to various levels of diesel (0, 15, 20, 25 g kg) for 30 days and 60 days. Exposure to diesel for 60 day led to concentration-dependent decreases in root morphogenesis, chlorophyll content and CAT activity, and to dose-dependent increases in MDA content and SOD activity.

Geometric Phase Generated Optical Illusion.

An optical illusion, such as "Rubin's vase", is caused by the information gathered by the eye, which is processed in the brain to give a perception that does not tally with a physical measurement of the stimulus source. Metasurfaces are metamaterials of reduced dimensionality which have opened up new avenues for flat optics. The recent advancement in spin-controlled metasurface holograms has attracted considerate attention, providing a new method to realize optical illusions.

Use of selenium to alleviate naphthalene induced oxidative stress in Trifolium repens L.

Polycyclic aromatic hydrocarbons (PAHs) are among the most dangerous of environmental contaminants, due to their toxicity, carcinogenicity and mutagenicity. This study investigated the use of selenium (Se) to protect plants from the toxic effects of naphthalene (NPH). Exposing Trifolium repens L.

Enantioselective apoptosis induced by individual isomers of bifenthrin in Hep G2 cells.

Bifenthrin (BF) has been used in racemate for agricultural purposes against soil insects, leading to increased inputs into soil environments. However, most of the studies about the toxicology research on BF were performed in its racemic form. The aim of the present study was to evaluate the enantiomer-specific cis-BF-induced apoptosis and intracellular reactive oxygen species (ROS) generation on human hepatocarcinoma cells (Hep G2).

Enantioselective cytotoxicity of isocarbophos is mediated by oxidative stress-induced JNK activation in human hepatocytes.

Recent studies have shown the enantioselectivity of chiral pesticides in environmental fate, aquatic toxicity, endocrine disruption and cytotoxicity. Thus it is of significance to investigate the molecular mechanisms of chiral pesticides enantioselectivity in cytotoxicity. In the present study, we used Hep G2 cells as in vitro model to assay cytotoxicity of enantiomers of isocarbophos (ICP), a widely used chiral organophosphorus pesticide.

Enantiomer-specific, bifenthrin-induced apoptosis mediated by MAPK signalling pathway in Hep G2 cells.

Enantioselectivity in toxicology, and health risk of chiral xenobiotics have become important topics at the forefront of chemistry and toxicology research. Our previous results showed that cis-bifenthrin (cis-BF) induced cytotoxicity and genotoxicity in human amnion epithelial (FL) cells, in an enantioselective manner. However, the exact molecular mechanisms of synthetic pyrethroid-induced, enantioselective apoptosis and cytotoxicity remain unclear.

Enantioselective cytotoxicity of the insecticide bifenthrin on a human amnion epithelial (FL) cell line.

Synthetic pyrethroids (SPs) are used in preference to organochlorines and organophosphates due to their high efficiency, low toxicity to mammals, and ready biodegradability. Previous studies reported that enantioselective toxicity of SPs occurs in aquatic toxicity. Several studies have indicated that SPs could lead to oxidative damage in humans or animals which was associated with their toxic effects.

Protective effect of green tea polyphenols on tributyltin-induced oxidative damage detected by in vivo and in vitro models.

The current study investigated the protective effects of green tea polyphenols (GTPP) on TBT-induced oxidative damage. The results showed that reactive oxygen species (ROS) production and malondialdehyde content of the liver in mice exposed to TBT were reduced in the GTPP-treated group compared to the untreated group. The intracellular ROS level was elevated in TBT-treated human FL cells in a time-dependent manner.