Designing Heteroatom-Codoped Iron Metal-Organic Framework for Promotional Photoreduction of Carbon Dioxide to Ethylene.

Rational engineering active sites and vantage defects of catalysts are promising but grand challenging task to enhance photoreduction CO to high value-added C2 products. In this study, we designed an N,S-codoped Fe-based MIL-88B catalyst with well-defined bipyramidal hexagonal prism morphology via a facile and effective process, which was synthesized by addition of appropriate 1,2-benzisothiazolin-3-one (BIT) and acetic acid to the reaction solution. Under simulated solar irradiation, the designed catalyst exhibits high C H evolution yield of 17.

Slow magnetic relaxation in mononuclear octa-coordinate Fe(II) and Co(II) complexes from a Bpybox ligand.

Two 3d transition metal mononuclear complexes, [(FeL)(ClO)]·CHCN (1) and (CoL)(ClO)·2CHCN (2), have been prepared from a rigid tetradentate bpybox (L = 6,6'-bis(2,5-dihydrooxazol-4-yl)-2,2'-bipyridine) ligand. Single crystal X-ray diffraction analyses together with the help of calculations show that both compounds are octa-coordinate. Direct current magnetic studies reveal their significant magnetic anisotropy.

Successive Phase Transitions and Dual Dielectric Switching in an Organic-Inorganic Hybrid Perovskite.

Molecular phase transition compounds have become a hot research area in recent years because of their potential as functional materials, such as ferroelectrics, ferroelastics, dielectric switches, etc. However, materials combining switchable dielectric properties and ferroelasticity are still rare. Here, we reported an organic-inorganic hybrid perovskite, [CPtmp][Cd(SCN)] () ([CPtmp] is a cyclopentyltrimethylphosphonium cation), with a potential ferroelastic property.

Perimenopausal syndrome and mood disorders in perimenopause: prevalence, severity, relationships, and risk factors.

Limited information was focused on perimenopausal syndrome and mood disorders (depression and anxiety) in a specific population: perimenopausal women. We aimed to investigate the prevalence and severity of perimenopausal syndrome and mood disorders, and to analyze their relationships and risk factors in perimenopausal women in Shanghai, China.A cross-sectional study was performed on 1062 women aged 40 to 60 years from 3 communities.

Solubilisation of Phosphate and Micronutrients by Trichoderma harzianum and Its Relationship with the Promotion of Tomato Plant Growth.

Trichoderma harzianum strain SQR-T037 is a biocontrol agent that has been shown to enhance the uptake of nutrients (macro- and microelements) by plants in fields. The objective of this study was to investigate the contribution of SQR-T037 to P and microelement (Fe, Mn, Cu and Zn) nutrition in tomato plants grown in soil and in hydroponic conditions. Inoculation with SQR-T037 significantly improved the biomass and nutrient uptake of tomato seedlings grown in a nutrient-limiting soil.

[Effects of thinning on fine-root morphology, biomass and N concentration of different branch orders of Chinese fir].

Taking a 25-year old Chinese fir (Cunninghamia lanceolata) plantation as the object, this paper studied the effects of thinning on the biomass, morphological traits, and nitrogen concentration of the first five orders roots. With the increase of root order (from the first to the fifth order), there was a significant increase in the fine-root biomass, diameter, and tissue density, and a significantly decrease in the specific root length (SRL), root length density (RLD), and root number (RN). Thinning increased the biomass, RLD, and RN of the first and second orders roots as well as the tissue density of the first, third, fourth, and fifth orders roots significantly, but had no effects on the SRL and nitrogen concentration of each order root.

[Protective effects of autophagy against oxidized LDL-induced injury in endothelial cells].

Objective: To investigate the role of autophagy in oxidized low density lipoprotein (ox-LDL) induced injury of human umbilical vein endothelial cells (HUVEC).

Methods: The cultured HUVECs were randomly divided into four groups of control, ox-LDL, ox-LDL + rapamycin and ox + 3-methyladenine (3-MA). The cells were used to detect the ratio of LC3-II/LC3-I by Western blot while the proliferation and apoptosis of cells measured by MTT and flow cytometry.

Monolayers of mixture of alkylaminomethyl rutin and lecithin at the air/water interface.

A compound of flavonol-based biosurfactant, as C(8)-substituted alkylaminomethyl rutin (DAMR) for a potential pharmaceutical or agrochemical use, was prepared experimentally. The surface behavior of DAMR and its mixture with lecithin from soybean (SL) had been studied. DAMR, regarded as a pseudo-amphoteric character, exhibits both liquid-condensed (LC) and liquid-expanded (LE) phases while SL is in the form of the LE phase only.

E-cadherin, as a negative regulator of invasive behavior of human trophoblast cells, is down-regulated by cyclosporin A via epidermal growth factor/extracellular signal-regulated protein kinase signaling pathway.

Our previous study has demonstrated cyclosporin A (CsA) promotes the invasiveness of human first-trimester trophoblast cells. In the present study, we further investigated the intracellular signaling pathway responsible for the improvements in CsA-induced invasiveness of human trophoblast cells. We showed that CsA down-regulated E-cadherin transcription and translation in human primary cultured trophoblast cells and choriocarcinoma cell line JEG-3.

[Transient UV absorption spectra of artemisinin reacting with sodium hydroxide].

UV absorption spectrum of artemisinin and transient absorption spectra of various concentrations of artemisinin reacting with sodium hydroxide were measured by using an intensified spectroscopic detector ICCD. The exposure time of each spectrum was 0.1 ms.

[Time resolved UV-Vis absorption spectra in synthetic process of quercetin complex with Al3+].

With a deuterium light source was used to provide the continuous light, the time resolved UV-Vis absorption spectra in the synthetic process of quercetin complex with Al3+ were measured by using an intensified ICCD spectroscopic detector. The measuing system was controlled synchronously by using a digital delay generator DG535. A total of 50 spectra with the exposure time of 1 micros for each spectrum and the time interval of 20 ms between two successional spectra were acquired.

[Measurement and analysis of nanometer particles of silica and carbon black by diffuse reflection FTIR spectra].

By using FTIR-FTS3000 spectrometer and infrared diffuse reflection accessory, the spectra of the nanometer particles of silica, carbon black and their blends with different weight ratio were collected and characterized. It was found from the measured results that blue-shift and broadening phenomenon occurred in the nanometer particle materials in comparison with the mass ones. These phenomena could be explained by the little size effect and quantum size effect.

[The measurement and analysis of visible-absorption spectrum and fluorescence spectrum of lycopene].

Using ICCD spectral detection system, the absorbency of lycopene-carbon bisulfide solution with different concentration was measured, and the result shows that in a specified range the absorption rule of lycopene solution agrees with Lambert-Beer Law. Absorption spectral wavelength shifts were measured respectively when lycopene was dissolved in acetone, normal hexane, petroleum ether, benzene, ethyl acetate, and carbon bisulfide, and comparing to acetone, different red-shift appeared when lycopene was dissolved in benzene, ethyl acetate, and carbon bisulfide when water was added in lycopene-acetone solution, t he absorbency of lycopene dropped, the fine structure of absorption spectrum became indistinct, and a new absorption peak appeared in UV. The reason for these phenomena is that the solvent molecule had different effect on lycopene molecule when lycopene was dissolved in different solvent.

[UV-vis spectroscopic characterization of inclusion compounds of beta-cyclodextrin with lycopene].

Water-soluble inclusion compounds of beta-cyclodextrin with lycopene were prepared by two methods: (1) complexation in solution and (2) complexation by kneading. It was found that UV-Vis spectra of the inclusion complexes in water are different from those of lycopene in water-miscible organic solvents (tetrahydrofuran) and beta-cyclodextrin in water, which confirms the formation of the inclusion complexes. Specific interactions of lycopene and beta-cyclodextrin cause great changes in absorbance maximum (lambdamax) of lycopene.