Exploring the properties of new super-chalcogens based on multiple electron counting rules: a combined DFT and study on [M(BCX)] dianion clusters.

The theoretical exploration of the super-chalcogen properties of multi-charged sandwich structures whose geometry simultaneously satisfyies the octet rule and Hückel's 4+2 rule is reported here a case study of dianion clusters [M(BCX)] (M = Be, Mg or Ca; X = H, F or Cl). The properties of these dianion clusters [M(BCX)] are close to or even superior to those of traditional clusters based on separate electron-counting rules, , the octet rule and Hückel's 4+2 rule. At the theoretical level of combined and DFT methods, these clusters, including halogen-substituents (F, Cl) are super-chalcogens due to their high first vertical electron detachment energy (FVDE), of which the largest value is 1.

[Pollution Characteristics and Risk Assessment of PAHs in the Soil of Wild in Shanxi].

Shanxi is one of the main producing areas of in China. In order to explore the safety of the soil in the areas where grows,70 surface (0-25 cm) soil samples were collected from the main growing areas of in the eastsouth of Shanxi Province in July 2017. The concentration and composition characteristics of 16 polycyclic aromatic hydrocarbons (PAHs) in the sample soils were analyzed using chemical extraction and gas chromatography-mass spectrometry (GC-MS).

[Pollution Characterization and Comprehensive Water Quality Assessment of Rain-source River: A Case Study of the Longgang River in Shenzhen].

Rain-source urban rivers are an important part of the urban ecosystem. Due to the small water environment capacity and the rapid development of the regional economy and society, they are vulnerable to serious pollution. The goal of this study was to identify the main pollution characteristics of river water quality and to carry out a scientific comprehensive water quality assessment.

[Effects of Nano-membrane on Aerobic Composting Process and Odor Emission of Livestock Manure].

Aerobic composting is an important approach to treat livestock manure; however, traditional composting has some problems, such as low efficiency, or odorous pollution. In order to speed up the composting process and reduce malodorous gas emissions, this study explored the mechanism of nano-membrane for improving the efficiency of livestock manure composting. A trough aerobic composting experiment was set up to evaluate the physicochemical properties, enzyme activities, and emission of odorous gases.

CRISPR/Cas9 mediated generation of a iPSC line EHTJUi005-A-1 with homozygous knockout of the SUV39H1 gene.

SUV39H1 is a histone methyltransferase involve numerous biological processes, including of aging, embryo development, tumor growth and mitosis via catalysis of dimethylation and trimethylation of lysine 9 of histone H3. Here we report a human induced pluripotent stem cell line (EHTJUi005-A-1) which is generated from a wildtype human iPSC previously established in our laboratory, and this iPSC has a homozygous knockout of 8 bp in Exon 2 of SUV39H1. This iPSC model provides a valuable resource to study epigenetic regulation in extensive biological processes as mentioned above.

An induced pluripotent stem cell line (EHTJUi004-A) generated from a neonate with c.4683_4684delCT:p.Leu1563fs mutation in the gene DSP causing Familial Arrhythmogenic Right Ventricular Dysplasia (ARVD).

Familial Arrhythmogenic Right Ventricular Dysplasia (ARVD) is a primary cardiomyopathy characterized by the abnormality of the right ventricular muscle. ARVD may be life-threatening due to the induction of paroxysmal refractory ventricular tachycardia or supraventricular arrhythmia. A human induced pluripotent stem cell line (EHTJUi004-A) was generated from human umbilical cord blood mononuclear cells (UCBMCs) of a female neonate with heterozygous mutation of p.

An induced pluripotent stem cell line (EHTJUi003-A) generated from a neonate with c.1377delC mutation in the gene MYBPC3 causing hypertrophic cardiomyopathy.

Hypertrophic cardiomyopathy (HCM) is an autosomal dominant heart disease. An induced pluripotent stem cell line (EHTJUi003-A) was generated from umbilical cord blood mononuclear cells (UCBMCs) of a female neonate with heterozygous mutation of p.L460Wfs (c.

[Biodegradation of Expanded Polystyrene Foams in : Effects of Gut Microbiota].

Polystyrene (PS) foam is one of the main plastic materials dispersed in the environment. In this study, we observed that the insect-super mealworms (), which belong to a species of the genus, are able to consume and degrade PS foam. Individual consumed an extracellular polymeric substance (EPS) over 50 days with high survival rates.

[ Biofertilizer Mitigating Soil Ammonia Volatilization].

In this study, we investigated the effectiveness and microbial mechanism of biofertilizer on reducing ammonia volatilization in farmland soil. Pot experiments were carried out to explore the effects of biofertilizer (BB) and chemical fertilizer on soil ammonia volatilization, crop yield and quality, and soil microbial community. Four fertilization strategies were tested, namely no fertilizer (CK), 100% chemical fertilizer (C), 50% BB and 50% chemical fertilizer (B1), and 100% BB (B2).

An induced pluripotent stem cell line (EHTJUi002-A) derived from a neonate with c.678G>A mutation in the gene FZD4 causing exudative vitreoretinopathy.

Familial exudative vitreoretinopathy (FEVR) is an autosomal dominant genetic disease. An induced pluripotent stem cell line (EHTJUi002-A) was generated from umbilical cord blood mononuclear cells (UCBMCs) of a neonate with heterozygous mutation of p.W226X(c.

[Characteristics of Nitrogen Metabolism by Denitrifying Bacterial Agents in Low Dissolved Oxygen Black Odor Water].

In order to deal with low dissolved oxygen black odor water body of Guangdong-Hong Kong-Macao Greater Bay Area, the nitrogen metabolic capacity of ammoniated bacteria, nitrifying bacteria and denitrifying bacteria under low dissolved oxygen concentration was studied, and the relationship between denitrification efficiency and nitrogen conversion of different bacteria was clarified, which provided theoretical basis for the treatment of black odor water of Guangdong-Hong Kong-Macao Greater Bay Area. Nitrogen conversion characteristics of ammoniated bacteria ( sp. Ay), nitrifying bacteria ( sp.

[Evaluation of the Potential Agricultural Risks of Polycyclic Aromatic Hydrocarbon Contaminated Soil by Planting L].

In order to evaluate the potential agricultural risks of soil contaminated by polycyclic aromatic hydrocarbons (PAHs), L. was used as a model leaf vegetable plant to investigate the enrichment characteristics of PAHs in the different tissues of L, such as its underground parts (GS) and aboveground parts (YS), which were studied through an experiment involving potted cultivation in PAHs contaminated soil that was taken from the agricultural soil around a coking enterprise area. The concentrations of the different PAHs in the soil and plant tissues were analyzed using ultrasonic oscillation extraction and high-performance liquid chromatography-mass spectrometry (GC-MS) analysis methods.

[Allelopathic Effects and Allelochemicals of on and ].

The allelopathic effects of on algal growth were investigated and potential allelochemicals secreted by were analyzed. were co-cultivated with different initial concentrations (10, 10, 10, 10, and 10 ind.·L) of and .

A novel matrine derivate inhibits differentiated human hepatoma cells and hepatic cancer stem-like cells by suppressing PI3K/AKT signaling pathways.

Matrine is an alkaloid extracted from a Chinese herb Sophora flavescens Ait, which has shown chemopreventive potential against various cancers. In this study, we evaluated the anticancer efficacy of a novel derivative of matrine, (6aS, 10S, 11aR, 11bR, 11cS)-10- methylamino-dodecahydro- 3a,7a-diazabenzo (de) (MASM), against human hepatocellular carcinoma (HCC) cells and their corresponding sphere cells in vitro and in vivo. Human HCC cell lines (Hep3B and Huh7) were treated with MASM.

[Improving Agricultural Safety of Soils Contaminated with Polycyclic Aromatic Hydrocarbons by In Situ Bioremediation].

In order to reduce the risk of enrichment of polycyclic aromatic hydrocarbons (PAHs) in crops, reduce the potential hazards of food-sourced PAHs to human and increase the agricultural safety of PAHs contaminated soils, the bio-augmented removal of polycyclic aromatic hydrocarbons (PAHs) was investigated through in situ remediation by introducing Rhodobacter sphaeroides (RS) into the agricultural soil contaminated by PAHs. The 50-times diluted RS was sprayed on leaf surface (in area B) or irrigated to roots (in area D). The treatment of spraying water of the equal amount was taken as the control (A) and the wheat field without any treatment as the blank (CK).

[Running Condition and Bacterial Community Associated with the Partial Nitritation System].

In partial nitritation process, the sludge concentration was higher than 4000 mg x L(-1), DO was less than 0.2 mg x L(-1), the temperature of 15-29 degrees C, the reactor HRT of 4.6 h, and the circulation ratio was 75%, not only the microbial biomass reached the highest value but also the ratio of nitrite to ammonium of the effluent could be controlled at approximate 1.

[Impact on the microbial community of municipal sewage in the anammox system during the cooling process].

Anaerobic ammonium oxidation is an important part of the biological nitrogen removal process, and the performance of the process is determined by the microbial community structure. Low-temperature anaerobic ammonium oxidation technology has good prospects for saving a lot of energy, and anaerobic ammonium oxidation bacteria play a vital role in the removal of total nitrogen from waste water. To explore the microbial community structure changes of anammox reactor in sewage treatment during the cooling process (from 30 degrees C to 20 degrees), the total amount of the microbial, the quantity of anaerobic ammonium oxidation and the change of functional microbial community were investigated in a sewage treatment process using the phospholipid fatty acid method (PLFA), quantitative PCR and the clone library of bacterial 16S rRNA.

The impacts of different long-term fertilization regimes on the bioavailability of arsenic in soil: integrating chemical approach with Escherichia coli arsRp::luc-based biosensor.

An Escherichia coli arsRp::luc-based biosensor was constructed to measure the bioavailability of arsenic (As) in soil. In previous induction experiments, it produced a linear response (R (2) = 0.96, P < 0.

Assessing the effect of phosphate and silicate on Cd bioavailability in soil using an Escherichia coli cadAp::luc-based whole-cell sensor.

An Escherichia coli cadAp::luc-based whole-cell sensor was constructed to measure cadmium (Cd) bioavailability and assess the immobilizing efficiency of phosphate and silicate on Cd. In previous induction experiments, a linear response (R(2) = 0.97, P < 0.

[Diversity of culturable filamentous bacteria in the activated sludge from A2O wastewater treatment process].

The anoxic-anaerobic-oxic (A2O) process is widely used in wastewater treatment plant, however, sludge bulking and foaming are the most frequent operational problems in this process. Activated sludge bulking is caused by the overgrowth of some types of filamentous bacteria, especially Microthrix parvicella. In the study, 17 strains of filamentous bacteria were isolated from the bulking sludge of A2O process using Gause's medium.

[Comparing microbial community of high ammonia wastewater and municipal sewage in a partial nitrification system].

Nitritation is an important part of the biological nitrogen removal process, and the performance of the process was determined by the microbial community structure. To explore the microbial adaptability to different sewage, the microbial diversity and the amount of bacteria were investigated in a high ammonia wastewater treatment process and a sewage treatment process using the clone library of bacterial 16S rDNA, the phospholipid fatty acid method (PLFA) and the quantitative PCR. The clone library results showed that there was a significantly difference in bacterial community structure of these two processes, although the dominant bacteria belong to the Proteobacteria and Bacteroidete, there were more clusters in the sewage treatment process.