Analysis of Soil and Water Balance on the Land Arrangement Function

Abstract

The natural supply of land resources is limited, but the economic supply may change along with social and economic development, and its size is decided bye nature and social and economic body conditions. When the supplying ability of land resources threatens the development of society and the conflict between people and land becomes tense, it forced people to improve land utilization and to increase the effective supply of land resources. The paper made an overall consideration on the characteristics of the irrigated farming and the frail ecological environment in Fuhai County, Altay Area, Xinjiang Uigur Autonomous Region and explored land arrangement planning as well as water resource planning and environmental protection. The paper evaluated natural resources, land utilization and water resource of the case study areas and focused on the spatio-temporal balance between the utilization of water and land resources. In the end the paper a feasible plan was made out for the land arrangement project.     

Construction of Circular Economy Industrial System

Abstract

It is difficult to realize the transformation from traditional economy industrial system to circular economy industrial system. Regarding primary raw materials as the indicators, the industrial system has been specified according to the divergence among the indicators and the circular utilization modes. In comparison with the association among industrial systems, the relationship among industrial sub-systems is named as industrial cross-linking in this paper. The industrial system which could completely utilize and recycle the indicators should be increased and strengthened, and the circular economy industrial system with complete industrial association and industrial cross-linking should also be constructed. Taking the development of circular agricultural system basing on the traditional agricultural system as an example, the traditional agricultural products are regarded as the indicators which have been divided into foodstuff and crop straws which are used to produce food and articles for use, like fertilizer, energy and papers etc. The way to construct the circular agricultural industrial system is to increase the industrial systems that could utilize the products generated from crop straws, feces and other castoffs and transform the wastewater and other trucks into environmental friendly products. It has also been pointed out that the construction of circular economy industrial system is conducive to the foundation of circular industrial economics and the establishment of the construction layout of circular economy and the application schemes. Suggestions to the theoretical and practical work of the next step have also been brought forward in this paper.     

Impacts of Suburbanization on Urban Eco-environment of Xi’an in China

Abstract

Suburbanization in large cities is an important phenomenon in the process of urbanization development in China in recent decades, which plays a very important role in promoting city development, whereas some side effects on the eco-environment appeared at the same time. This paper, taking Xi’an City in China as a case study site, analyzed the features of population suburbanization and industry suburbanization and pointed out the impacts of suburbanization on urban eco-environment. Based on the research, suggestions of countermeasures for urban planning and municipal management of Xi’an City in protecting urban eco-environment and conserving natural ecology were put forward in the end.     

Overestimated role of sulfate in haze formation over Chinese megacities due to improper simulation of heterogeneous reactions

Environmental Chemistry Letters - Heterogeneous reactions involving aerosol water, i.e., haze chemistry, are responsible for high aerosol concentrations observed during severe haze events in...     

The inactivation of bacteriophages MS2 and PhiX174 by nanoscale zero-valent iron: Resistance difference and mechanisms

• The resistance of phage PhiX174 to nZVI was much stronger than that of MS2. • The nZVI damaged the surface proteins of both bacteriophages. • The nZVI could destroy the nucleic acid of MS2, but not that of PhiX174. •The phage inactivation was mainly attributed to the damage of the nucleic acid. Pathogenic enteric viruses pose a significant risk to human health. Nanoscale zero-valent iron (nZVI), a novel material for environmental remediation, has been shown to be a promising tool for disinfection. However, the existing research has typically utilized MS2 or f2 bacteriophages to investigate the antimicrobial properties of nZVI, and the resistance difference between bacteriophages, which is important for the application of disinfection technologies, is not yet understood. Here, MS2 and PhiX174 containing RNA and DNA, respectively, were used as model viruses to investigate the resistances to nZVI. The bacteriophage inactivation mechanisms were also discussed using TEM images, protein, and nucleic acid analysis. The results showed that an initial concentration of 10⁶ PFU/mL of MS2 could be completely inactivated within 240 min by 40 mg/L nZVI at pH 7, whereas the complete inactivation of PhiX174 could not be achieved by extending the reaction time, increasing the nZVI dosage, or changing the dosing means. This indicates that the resistance of phage PhiX174 to nZVI was much stronger than that of MS2. TEM images indicated that the viral particle shape was distorted, and the capsid shell was ruptured by nZVI. The damage to viral surface proteins in both phages was examined by three-dimensional fluorescence spectrum and sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). However, the nucleic acid analysis demonstrated that the nucleic acid of MS2, but not PhiX174, was destroyed. It indicated that bacteriophage inactivation was mainly attributed to the damage of nucleic acids.     

Prenatal air pollution exposure increases the risk of macrosomia: evidence from a prospective cohort study in the coastal area of China

Environmental Science and Pollution Research - Effects of prenatal ambient air pollution exposure could increase the risk of adverse pregnancy outcomes, which have been well documented by various...     

A novel preparation process of straw-based iron material for enhanced persulfate activation of reactive black 5 degradation

Environmental Science and Pollution Research - In this study, a new straw-iron composite material (ST@Fe) was synthesized through impregnation and freeze-drying process for persulfate (PS)...     

Coupling coordination degree and driving factors of new-type urbanization and low-carbon development in the Yangtze River Delta: based on nighttime light data

Environmental Science and Pollution Research - The coordination relationship between new-type urbanization and urban low-carbon development under the goal of carbon neutrality has become a hot...     

Preparation of Magadiite-Sodium Alginate Drug Carrier Composite by Pickering-Emulsion-Templated-Encapsulation Method and Its Properties of Sustained Release Mechanism by Baker–Lonsdale and Korsmeyer–Peppas Model

Journal of Polymers and the Environment - In this study, the nanohybrid drug carrier were synthesized by Pickering emulsion-templated encapsulation (PETE) method to control the...     

Numerical modeling and optimization of a power augmented S-type vertical axis wind turbine

An axial symmetry augmented vertical axis wind turbine, which is suitable for arbitrary wind directions, is proposed in this paper. In order to improve the power generation ability of the S-type vertical axis wind turbine, a set of so-called “collection-shield boards” are installed symmetrically around the rotating S-type rotor. The flow fields around this type of wind turbine are numerically simulated with the aid of CFD method. The optimized design of geometrical parameters of the rotor and collection-shield boards is conducted by using the orthogonal design method. The obtained results suggest that the power output of the optimized augmented wind turbine can reach nearly three times higher than that of the conventional S-type vertical axis wind turbine.