Zhejiang University of Water Resource and Electric Power

About: Zhejiang University of Water Resource and Electric Power is a education organization based out in . It is known for research contribution in the topics: Engineering & Computer science. The organization has 7 authors who have published 7 publications receiving 2 citations.

The effect of compound biofertilizers on nitrogen metabolism and microbial diversity of soil rhizosphere in tobacco fields

Abstract: Compound biofertilizers could improve the nutrient condition of the ecosystem and the fertility of agricultural fields. At micro level, the soil microbial communities could be influenced, resulting in taxonomic and functional changes in the soil microbiome. In the present research, compound biofertilizers were applied into tobacco (Nocotiana tabacum L., Family: Solanaceae) field ecosystems of Qianxi, Weining, and Meitan city of China, and the diversity of microbial communities were determined using metagenome technique. The results revealed that nitrogen compounds of each treatment were significantly increased after 30 d. In addition, indigenous microorganisms in fertilizer were developed into the dominant bacteria, and Compound Biofertilizer III has a potential and great effect compared with others. Depending on our findings, the research-based knowledge obtained between compound biofertilizers, and soil microbiome could provide a clue to the development of environmentally friendly and long-acting biofertilizer application processes in the agricultural fields.

Study on Biomass Gasification Char Purify Domestic Sewage

Abstract: Domestic sewage was one of the important reasons for groundwater pollution. Now it’s expensive to treat groundwater pollution, so it’s significant to find cheap and renewable adsorbents to purify domestic sewage. This paper would use the industrial solid waste—biomass gasification char (BGC) of biomass gasification power plants to treat groundwater pollution, it was a by-product of biomass gasification power generation. It had strong load capacity and developed pore structure, and was a potential adsorbent for water purification. This paper provided a theoretical basis for BGC to purify domestic sewage.

Study on Influence of Thermal Insulation Coatings on Small Room Temperature

Abstract: Under the background of today’s rapid urbanization development, the application of thermal insulation coatings on roofs has become one of the methods of energy saving and environmental protection. This study mainly discusses the influence of thermal insulation coatings on the small room temperature of the carton, and records the relevant meteorological data and surface temperature. Based on the measured data, the small room temperature performance of the reflective coating chamber under different conditions is analyzed, and the relationship with the thermal radiation force is studied. Also the influence of thermal insulation coating on the small room temperature and the feasibility of applying thermal insulation coating on roof are analyzed.

Seasonal Dynamics of Reservoir Environmental Factors and Planktonic Algae

Abstract: Reservoir algae outbreaks are related to many factors such as water quality, local weather and hydrological conditions. Water quality conditions are the basis for algal growth and development, and the large amount of nutrients such as nitrogen and phosphorus in the water provide a direct carbon source for algal growth and reproduction. To investigate the relationship between environmental factors and the seasonal dynamics of algae in Shuang Xi Kou Reservoir, water bodies at different points of the reservoir were sampled and monitored. The correlation analysis between environmental factors such as water temperature, total nitrogen (TN), total phosphorus (TP) and permanganate index (CODMn) and planktonic algae was selected. The results showed that the important causes of the gradual increase of planktonic algae in Shuang Xi Kou Reservoir were related environmental factors such as total nitrogen and total phosphorus, and the planktonic algae mainly consisted of cyanobacteria, green algae, diatoms and cryptophytes, which provided reference for the analysis of nutrient sources in Shuang Xi Kou Reservoir and the monitoring and early warning of planktonic algae breeding in Shuang Xi Kou Reservoir.

Design and realization of a digital signal source

Abstract: This paper introduces the design method of the digital signal generator based on LPC2132 as the main control chip. Using the direct digital frequency synthesis (DDS) chip and programmable logic device (CPLD), the analog signal amplification and gain control circuit is designed. Different signals can be conveniently switched through the keyboard, realizing a new digital signal source with stable waveform, high precision and adjustable amplitude and frequency within the specified range.