ค้นหาจากครู ภาษาอังกฤษ หลากหลายคน...
โพสต์
Database application
Database application for products which are manufactured by the companies belonging to the Polish Association Manufacturers of Pipes and Fittings made with Polymers
The aim of this thesis was to design a database application for members of companies of the Polish Association Pipes and Fittings made with Polymers. The database was built in the MySQL Workbench 6.0.
Designed database is used for the main objective of the Association, which is the disse-mination of pipes and fittings manufactured by member companies among users through the promotion and activities which are integrating both communities.
This thesis consists of two main parts: a literature review and a methodology. The litera-ture review provides basic information about databases and SQL and in the methodology was described use of program, was built a relational database schema and was described the process of creating the database in MySQL Workbench.
The database schema consists of eight tables (company, city, voivodeship, product, category, subcategory, description, material). The tables in the majority of cases are connected for many-to-one relationship.
In MySQL Workbench was constructed an entity relationship diagram and the database was tested using a query language SQL.
4
0
Jakie są polskie odpowiedniki słów "desktop database" i "workgroup database"?
0
0
Results of the simulations
An analysis of the results of the simulations showed that lowering the temperature at which the processes of wastewater treatment were being carried out affected negative on the quality of wastewater discharged into the environment due to increased concentrations of indicators, especially total nitrogen.
6
0
Can you explain impersonal constructions to me?
Hi, I have to correct undermentioned sentences on impersonal. Can you help me? I have no idea how to do it... :/
1. I have used the library CNPLIB while simulating the project in GPS-X.
2. For describing wastewater influent from the collector and wastewater transported from the septic tank, I have used the mathematical model TSSCOD.
3. In the description of sedimentation in the circular primary clarifier and in the secondary clarifiers, I chose the model Simple1d. I chose the model ASM2d to characterize the processes occurring in the bioreactor.
4. While I was configuring objects related to the input, I was using the spreadsheet included with the GPS-X, named Influent Advisor.
5. I examined six series of simulation which differed by the value of the temperature in which processes of wastewater treatment were occurring, and the participation of fecal sewage into the wastewater from the collector.
Thank you for your help :)
6
0
Simulation studies the effect of temperature on the efficiency of the bioreactor
Simulation studies the effect of temperature on the efficiency of the bioreactor with the participation of fecal sewage
The aim of the research was to study the effect of temperature on the efficiency of the bioreactor with the participation of fecal sewage. Simulation studies were carried out in the simulator developed in Canadian company Hydromantis – GPS-X, Version 5.0.
The design model of sewage plant consists of a circular primary clarifier, a plug flow tank (system MUCT) and two circular secondary clarifiers. I have used the library CNPLIB while simulation of the project in GPS-X. For describing wastewater influent from collector and wastewater transported from septic tank I have used the mathematical model TSSCOD. In the description of sedimentation in the circular primary clarifier and in the secondary clarifiers I chose the model Simple1d. I chose the model ASM2d to characterize the processes occurring in the bioreactor. When I was configuring objects related to the input, I was used spreadsheet included with the GPS-X, named Influent Advisor.
Examined six series of simulation, which differed by the value of the temperature in which processes of wastewater treatment was occurring and the participation of fecal sewage into the wastewater from the collector. Simulation studies were carried out at 10℃ and 20℃ without wastewater from septic tank and at 10% and 20% of their participation too. During the entire process of simulation the various parameter like composition and quality of sewage was maintained constant.
Analysis of the results of the simulations showed that lowering the temperature at which the processes of wastewater treatment was being carried out, affected the efficiency of
removal of impurities in the system. On the other hand, increase of the participation of fecal sewage in wastewater from the collector, improves BOD5 and COD removal efficiency, and at the same time worsens total nitrogen removal efficiency. Also I observed that during the entire activity of simulation efficiency of removal total phosphorus was better with 20% participation of wastewater transported from septic tank than it was with 10% participation.
3
1
