(1) Background: Eco−spatial networks play an important role in enhancing ecosystem services and landscape connectivity. It is necessary to study structure optimization achieve synergistic gains network connectivity functionality. (2) Method: Based on remote sensing data, RS GIS were used evaluate the spatiotemporal changes China. Combined with complex theory, evolution of China’s ecological spa...

The higher the pointing accuracy of radio telescope, more obvious influence wind disturbance on antenna performance. Taking site 110 m aperture QiTai Telescope (QTT) as an example, terrain and air flow characteristics are studied. It is found that direction with high incoming frequency relatively speed mostly located in mountain gap periphery antenna. If resistance facilities precisely arranged...

Elderberry species (Sambucus spp.) grows mostly in wild form the northern hemisphere. It is often used for landscaping riverbanks, as a windbreak, but also human nutrition and medicinal purposes. This plant especially industrial field to obtain essence. In this study, effects of some applications on rooting success elder wood cuttings were investigated. For purpose, addition 0, 2000, 4000 ppm I...

The northern Songnen Plain in China is one of the most important areas for grain production China, which has been increasingly affected by wind erosion recent years. This study analyzed dynamic spatiotemporal distribution from 2010 to 2018 using Revised Wind Erosion Equation model. ecological service function area was evaluated constructing a spatial visualization map windbreak and sand-fixatio...

this research was conducted in continuous flow bench scale fixed activated sludge (fas) and anaerobic filter (af). the main objective of the research was to study the feasibility and efficiency of the mentioned systems for cr (vi) removal. in fas reactor, cr (vi) was adsorbed from influent to mlss in the range of 89 to 99 percent and the adsorption followed freundlich isotherm. in af reactor, c...

background : the sequencing batch reactor (sbr) is one of the most widely used systems in sewage treatment because of the simplicity of the process, flexibility of operation in the removal of nutrients, and the ability to be used in different scales. the aim of this study was to evaluate the efficiency of the sbr in the removal of organic matter (nitrogen and phosphorus) from synthetic wastewat...