Enhancing sulfate reduction and hydrogen sulfide removal through gas stripping in the acidogenesis phase of a two-phase anaerobic process.

This study aims at evaluating two-phase and single-phase reactors for treating sulfate wastewater with low COD/SO ratios. Additionally, a new process of gas stripping in an acidogenesis phase is proposed to reduce hydrogen sulfide (HS) inhibition and enhance biomethanation. The two-phase performed better than the single-phase in terms of COD removal, CH production and HS resistance.

Alleviation of Reverse Salt Leakage across Nanofiber Supported Thin-Film Composite Forward Osmosis Membrane via Heat-Curing in Hot Water.

Electrospun nanofiber with interconnected porous structure has been studied as a promising support layer of polyamide (PA) thin-film composite (TFC) forward osmosis (FO) membrane. However, its rough surface with irregular pores is prone to the formation of a defective PA active layer after interfacial polymerization, which shows high reverse salt leakage in FO desalination. Heat-curing is beneficial for crosslinking and stabilization of the PA layer.

Flexible and porous TiO/SiO/carbon composite electrospun nanofiber mat with enhanced interfacial charge separation for photocatalytic degradation of organic pollutants in water.

Semiconductor photocatalysis has long been considered as a promising approach for remediation of polluted water. However, the high recombination rate of electrons and holes, as well as a low reaction rate, have impeded its large-scale applications. Therefore, it is of great importance to develop appropriate photocatalysts for promoting its practical application.

The effects of exercise-induced fatigue on acetylcholinesterase expression and activity at rat neuromuscular junctions.

Acetylcholinesterase is the enzyme that terminates neurotransmission by hydrolyzing the acetylcholine released by the motoneurons at the neuromuscular junctions. Although acetylcholinesterase has been studied for almost a century, the underlying relationship between exercise-induced fatigue and acetylcholinesterase activity at the synaptic cleft is not clear. The purpose of this study was to assess the effects of exercise-induced fatigue on the expression and activity of acetylcholinesterase at the neuromuscular junctions.

[Indirect study of zinc-cystine complex reaction by FAAS].

Each state of cystine and zinc ion in aqueous solution under different pH conditions was calculated by computer, and the scatter diagram was given. Under the influence of solution pH, the mechanism of complex reaction in indirectly determining cystine by flame atomic absorption spectrometry with ZnS was studied. The soluble complex ion is composed of 0 valence cystine Cys-Cys+/-, -1 valence cystine Cys-Cys+/- and -2 valence cystine Cys-Cys(2-) with Zn(OH)2.

[Effect of precursor of brain-derived neurotrophic factor on hippocampal neuron survival and its mechanism].

Objective: To explore the effect of precursor of brain-derived neurotrophic factor (proBDNF) on cultured hippocampal neuron and its intracellular mechanism.

Methods: The hippocampal neurons were dissociated from E18 rats and cultured in neurobasal medium, and then the cells were treated with proBDNF, preBDNF(propeptide of proBDNF) and proBDNF antiserum,respectively. Thirty minutes, 1 hour or 48 hours later, the cells were stained with Nissl solution, and the immunocytochemistry methods of ELK-p (Ets domain protein), ErK2(extracellular signal regulated kinase) and c-fos were performed.

[Quantitative determination of glucose by internal standard laser Raman spectra].

In the present paper we report quantitative analysis of glucose using internal standard laser Raman spectra. A good linear correlation was observed between the intensities of the -COO band at 1 125 cm(-1) using excition wavelength of 632.81 nm (r = 0.

[Indirect studies of zinc-histidine complex reaction by FAAS].

Each state of histidine and zinc ion in aqueous solution with different pH was calculated by computer, producing the scatter diagram. Under the influence of solution pH, the mechanism of complex reaction in indirectly determining histidine by flame atomic absorption spectrometry with ZnS was studied. In different state of histidine and zinc ion in aqueous solution at differential pH, the response peak with pH in giving conditions was obtained.

[Studies of influences of environmental light on near-infrared laser raman spectra of sodium glutamic acid solution].

The near-infrared laser Raman spectra influenced by environmental light were studied in the determination of sodium glutamic acid solution. The environmental lights included natural light from outdoors and light from room fluorescent lamp. The results show that different influences on near infrared laser Raman spectra of sodium glutamic acid solution can be produced in different environmental light.

[Studies of laser Raman spectra of ZnCl2 solution effected by environmental light].

The laser Raman spectra influenced by environmental light were studied in the determination of ZnCl2 solution. The environmental light included the natural light from outdoors and the light from indoor fluorescent. The results show that different influences on the laser Raman spectra of ZnCl2 solution can be produced in different environmental light.

[Studies of laser Raman spectra of sodium glutamic acid solution effected with environmental light].

The laser Raman spectra influenced by environmental light have been studied in the determination of sodium glutamic acid solution. The environmental light included natural light from outdoors and the light from indoor fluorescents. The results show that different influences on laser Raman spectra of sodium glutamic acid solution can be produced in different environmental light.

[Influence of different light source on the laser Raman spectra in determination of sodium glutamic acid].

The influences of different laser source and different light power on laser Raman spectra were studied for the sodium glutamic acid. The results show that some influences existed using different wavelength and power of light source the peak shifting 6 cm(-1). As UV laser has great light power, the samples were destroyed, making the Raman spectra- reduce or disappear.

[Effect of polygonum multiflorum thunb on BDNF expression in rat hippocampus induced by amyloid beta-protein (Abeta) 1-40].

Objective: To explore the effect of polygonum multiflorum thunb (PMT) on the expression of brain-drived neurtrophic factor (BDNF) in hippocampus CA1 in rats induced by Abeta1-40.

Methods: The rat model was established by injecting Abeta1-40 into the right dorsal hippocampus in rats, and their behavior was observed by Y-maze. The morphological changes of rat hippocampus were examined by the Nissl staining.

[Expression of eNOS in the endothelial cells during the arteriogenesis of pig hind-limbs].

Objective: To detect the expression and activity of eNOS during the arteriogenesis of hind-limbs of pigs.

Methods: The right femoral artery was ligated, and the left femoral artery shamly operated under routine surgical procedures. Animals were sacrificed after two weeks.

[Studies of complexing action mechanism in indirect determination of cysteine by FAAS with ZnS].

Each state of cysteine and zinc ion in aqueous solution at different pH conditions was calculated by computer, giving out the distribution curve. The mechanism of complexing action in indirectly determining cysteine by flame atomic absorption spectrometry with ZnS, and the influence of solution pH were studied. The state of cysteine and zinc ion in aqueous solution at different pH is different.

[Distribution of NMDAR1 and subunits (alpha1 and alpha3) of GABAA receptor in the cerebellar cortex of adult rhesus macaques].

Objective: To investigate the distribution of NMDAR1 and subunits (alpha1 and alpha3) of Immunohistochemistry and GABAA receptors in the cerebellar cortex of adult rhesus macaques.

Methods: Nissl staining were used.

Results: (1) NMDAR1 immunoreactivity was prevalent in the endoplasma of Purkinje and dendrites of molecular layer, and moderate in glia, but was very weak in the stellate cells in the molecular layer and granule cells.

[Differentiation of rat bone marrow stromal cells into neuron like cells].

Objective: To investigate the differentiation of the rat bone marrow stromal cells (BMSCs) into neuron like cells which express glutamic acid decarboxylase (GAD) and choline acetyltransferase (ChAT).

Methods: BMSCs of rats were flushed out with DMEM from femurs marrow and separated, and then planted in plastic flask. After being expanded and purified, the BMSCs were differentiated into neuron-like cells.

[Pathway for macrophage invasion into the tunica media and the intima in vein graft].

Objective: To test whether the macrophages in vein grafts may invade into the vascular wall from the adventitia apart from the lumen.

Methods: Expression of CD68 (a marker of macrophage) and CD31 (a marker of endothelial cells) in 30 vein grafts were detected by confocal immunofluroscence. Images were processed with Silicon Graphics Octane.