Share Rose, Get Fun: The Influence of Donation on Happiness.

There is little literature on the impact of donation on individual wellbeing in China. This study examines individual donations in China to answer the question of whether helping others makes us happier and to provide policy implications for in Chinese context. Based on the 2012 Chinese General Social Survey (CGSS) data and using ordered logit and OLS as benchmark models, this study finds that donation can significantly increase individual happiness.

Does the Internet Use Improve the Mental Health of Chinese Older Adults?

The Internet has become an important part of daily life. However, older adults in China remain digital refugees amid the rapid development of digital information technology. This study attempts to scientifically answer how Internet use affects the subjective welfare of older adults.

Internet Use, Life Satisfaction, and Subjective Well-Being Among the Elderly: Evidence From 2017 China General Social Survey.

The research objectives of this study are to test the scientific propositions of whether Internet use promotes life satisfaction among the elderly, whether there is variability in the effect of Internet use on the well-being of the elderly, and through what channels Internet use affects the elderly's life satisfaction. Using data from the 2017 Chinese General Social Survey (CGSS), this paper employed linear regression, ordered logit model, and the propensity score matching (PSM) approach to investigate the association of Internet use with life satisfaction among the elderly in China. The results show that Internet use was significantly and negatively associated with the life satisfaction of the Chinese elderly.

Response of the microbial community to seasonal groundwater level fluctuations in petroleum hydrocarbon-contaminated groundwater.

The effects of seasonal groundwater level fluctuations on the contamination characteristics of total petroleum hydrocarbons (TPH) in soils, groundwater, and the microbial community were investigated at a typical petrochemical site in northern China. The measurements of groundwater and soil at different depths showed that significant TPH residue was present in the soil in this study area, especially in the vicinity of the pollution source, where TPH concentrations were up to 2600 mg kg(-1). The TPH concentration in the groundwater fluctuated seasonally, and the maximum variation was 0.

Natural attenuation of 1,2,4-trichlorobenzene in shallow aquifer at the Luhuagang's landfill site, Kaifeng, China.

The natural attenuation of 1,2,4-trichlorobenzene (1,2,4-TCB) in shallow aquifer was investigated at the Luhuagang's landfill site (LLS), where the subsoil and shallow aquifer have been contaminated by certain chemicals owning to a lack of protective structures and leachate collection systems. Batch natural attenuation experiments and molecular biology experiments were conducted to study the natural attenuation characteristics of 1,2,4-TCB, the relative contributions of the primary natural attenuation processes and the functional microorganisms degrading 1,2,4-TCB, respectively. The results indicated that the relationship between degradation rate and 1,2,4-TCB concentrations was in line with first-order decay kinetics, and the natural attenuation rate of 1,2,4-TCB in the three media followed the order silt>fine sand>medium sand, which was related to the size of the media and the microbial population.

Expression of c-fos in rat brain as a prelude marker of central nervous system injury in response to methylmercury-stimulation.

Objective: To probe into the prelude marker of central nervous system injury in response to methyl mercury chloride (MMC) stimulation and the signal transduction molecular mechanism of injury in rat brain induced by MMC.

Methods: The expression of c-fos mRNA in brain and the expression of c-FOS protein in cortex, hippocampus and ependyma were observed using reverse transcription polymerase chain reaction (RT-PCR) and immunocytochemical methods. The control group was injected with physiological saline of 0.

[Extreme thermophilic (70 degrees C), combining two-phase anaerobic/activated sludge/bio-activated charcoal for treating food wastewater].

This study was conducted to investigate the performance of combining two-phase anaerobic(TPA)/activated sludge(AS)/bio-activated charcoal(BAC), seeded with mesophilic sludge, for treating food wastewater at extreme temperature (70 degrees C) to allow treated water to be reused for closed heat water circuits. The system had a total hydraulic retention time of 42h. Reactor performance was characterized by COD, VFA, pH, amino-acid.

Effects of mercury contaminated rice from typical chemical plant area in China on nitric oxide changes and c-fos expression of rats brain.

China is one of countries with the highest mercury production in the world. The Guizhou Province in Southwestern China is currently one of the world's most important mercury production areas. In order to study the neurotoxicity of rice from Qingzhen Chemical Plant area and probe into the signal transduction molecular mechanism of injury in rat brain stimulation by mercury contaminated rice.

[Hydrolysis and mechanism of wastewater contained protein using immobilized protein enzyme].

Protein-enzyme was immobilized on big-hole resin, activated charcoal and silica particles by a absorption method. This study focuses on effect of enzyme immobilization, thermal stability and hydrolysis efficiency of wastewater. The result of batch test show that the ratio of immobilized enzyme on activated charcoal, big-hole resin and silica particles was 61.

Effect of methylmercury on some neurotransmitters and oxidative damage of rats.

In order to study the molecular mechanism of injury in rat organs induced by methylmercury, and the relationship between neurotransmitter and oxidative damage in the toxicity process of rat injury by methylmercury was studied. The control group was physiological saline of 0.9%, the concentration of exposure groups were 5 mg/( kg x d) and 10 mg/( kg x d) respectively.