22 Result(s)
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Article
A Spatial Ecological Study on Hair Selenium Level of Residents in Keshan Disease Endemic and Non-endemic Areas in Heilongjiang Province, China
This study was aimed to provide, by map** the spatial distribution of hair selenium levels of residents, visualized evidence for assessment of KD elimination from a perspective of selenium nutrition of the r...
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A Spatial Ecological Study on Serum Selenium and Keshan Disease in Heilongjiang Province, China
There are no reports on the spatial ecology of serum selenium and Keshan disease in Heilongjiang Province in China.
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Article
A Spatial Ecology Study of Keshan Disease and Hair Selenium
Few spatial ecological studies on hair selenium (Se) and Keshan disease (KD) have been reported. To investigate the relationships of hair Se with KD and economic indicators and to visualize the evidence for KD...
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Article
Diversity and community structure of ammonia oxidizers in a marsh wetland of the northeast China
As an interface of terrestrial and aquatic ecosystems, wetland is a hotspot of the global nitrogen cycle. Ammonia oxidation is an essential part of the nitrogen cycle and is conducted by ammonia-oxidizing arch...
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Article
Short, auto-inducible promoters for well-controlled protein expression in Escherichia coli
Expression of recombinant proteins in Escherichia coli often requires use of inducible promoters to shorten the lag phase and improve protein productivity and final protein titer. Synthetic molecules that cannot ...
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Article
Temporal and spatial distribution of ammonia-oxidizing organisms of two types of wetlands in Northeast China
Ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) contribute significantly to the nitrogen cycle. The community structure of AOA and AOB is diverse in the different wetlands. Few studies hav...
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Article
The Association Between Calcium, Magnesium, and Ratio of Calcium/Magnesium in Seminal Plasma and Sperm Quality
The study aimed to examine the relationships between calcium, magnesium, and calcium/magnesium ratio in semen plasma and sperm quality. It was a cross-sectional study based on a program aiming at promoting the...
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Article
Kinetics of nitrate and sulfate removal using a mixed microbial culture with or without limited-oxygen fed
The biological degradation of nitrate and sulfate was investigated using a mixed microbial culture and lactate as the carbon source, with or without limited-oxygen fed. It was found that sulfate reduction was ...
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Article
Simultaneous energy recovery and autotrophic nitrogen removal from sewage at moderately low temperatures
This study assessed the technical feasibility of treating sewage with a combination of direct anaerobic treatment and autotrophic nitrogen removal, while simultaneously achieving energy recovery and nitrogen r...
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Article
Influence of aeration intensity on mature aerobic granules in sequencing batch reactor
Aeration intensity is well known as an important factor in the formation of aerobic granules. In this research, two identical lab-scale sequencing batch reactors with aeration intensity of 0.8 (R1) and 0.2 m3/h (...
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Reactivation characteristics of stored aerobic granular sludge using different operational strategies
Aerobic granules after 6 months storage were employed in identical sequencing batch reactors (SBRs) using synthetic wastewater to investigate the impacts of different operational strategies on granules’ reacti...
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Article
Phosphorus removal characteristics of granular and flocculent sludge in SBR
Aerobic granulation technology has become a novel biotechnology for wastewater treatment. However, the distinct properties and characteristics of phosphorus removal between granules and flocculent sludge are s...
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Article
Anti-hyperglycemic Activity of Chromium(III) Malate Complex in Alloxan-Induced Diabetic Rats
The synthesis, characterization, anti-hyperglycemic activity, oxidative DNA damage capacity, and acute toxicity of chromium(III) malate complex [Cr2(LMA)3] were described. [Cr2(LMA)3] was synthesized in a single-...
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Article
Comparison of biological removal via nitrite with real-time control using aerobic granular sludge and flocculent activated sludge
The process of nitrification–denitrification via nitrite for nitrogen removal under real-time control mode was tested in two laboratory-scale sequencing batch reactors (SBRs) with flocculent activated sludge (...
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Article
Mycotoxin Ochratoxin A-induced cell death and changes in oxidative metabolism of Arabidopsis thaliana
We evaluated the phytotoxicity of mycotoxin ochratoxin A (OTA) from Aspergillus and Penicillium strains on Arabidopsis thaliana. The results demonstrate that the growth of Arabidopsis thaliana on media containing...
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Article
Increasing the cell viability and heterologous protein expression of Pichia pastoris mutant deficient in PMR1 gene by culture condition optimization
In this study, we assessed the potential of PMR1-disrupted Pichia pastoris (Pppmr1) expressing human serum albumin and interferon alpha2b fusion protein (HSA-IFN-alpha2b) in large-scale fermentation. The high osm...
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Article
Expression of a truncated ripening inhibitor (RIN) protein from tomato and production of an anti-RIN antibody
The tomato ripening mutant, ripening inhibitor (rin), whose fruits fails to ripen, has been identified and widely studied. The RIN gene has been cloned. Here we present the expression of a truncated form of the R...
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Article
Remediation of pentachlorophenol-contaminated soil by composting with immobilized Phanerochaete chrysosporium
To reduce and eliminate the hazards of pentachlorophenol (PCP) to the soil, the method of inoculating free and immobilized white rot fungi, Phanerochaete chrysosporium to PCP-polluted soils was investigated. Thre...
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Article
Control of recombinant human endostatin production in fed-batch cultures of Pichia pastoris using the methanol feeding rate
Endostatin is a 20 kDa carboxyl-terminal fragment of collagen XVIII that strongly inhibits angiogenesis and tumor growth. The methylotrophic yeast, Pichia pastoris, is a robust expression system that can be used ...
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Article
Mitotic reversion in prophase of PTK1 cells induced by argon laser microirradiation
In this paper, we report the effects of laser microirradiation of prophase nucleoli and mitotic chromosomes in cells of female rat kangaroo kidney epithelial cell line PTK1. When the laser power delivered to samp...
