In this research we will study an algebraic structure pseudo d-algebras. Then we give some more properties for pseudo d-ideal that can construct a quotient pseudo d-algebras. Moreover we show that the quotient pseudo d-algebras is a pseudo d-algebras.

Normally the request to swap a working period and the request to work overtime procedure are action with lots of papers. Furthermore both procedures need approval from a manager who worked in the field outside the company. Therefore the developer proposed the Overtime Duration Computed System with Time Attendance Changing Function. This system operated by working based on a web application that can facilitate for submitting the request and the approval via the internet. After the system testing the Overtime Duration Computed System with Time Attendance Changing Function can support and also reduce the duration time for the request and the approval procedure for both employee and manager.

This research studied the factors that affect the efficiency of phosphate reduction in the wastewater of the washing process with CaCO3 and CaO produced from eggshell and mussel shell. The study found that the optimum condition for adsorption when using CaCO3 from eggshell is to adjust the pH to be equal to 10 take 15 minutes to absorb and add 1 gram of sorbent which can reduce the phosphate content by 25 percent and when changing the adsorbent to CaO the optimum condition for phosphate removal is to adjust the pH to 7 take 15 minutes to absorb and add 1 gram of adsorbent which can reduce the phosphate content by 24 percent. The optimum conditions for adsorption when using CaCO3 from mussel shell were to adjust the pH to 10 take 45 minutes to absorb and add 1 gram of sorbent which can reduce the phosphate content by 25 percent and when changing adsorbents to CaO the optimum condition for phosphate removal is to adjust the pH to 10 take 15 minutes to absorb and add 3 grams of adsorbents which can reduce the phosphate content by 24 percent. In addition when studying the adsorption of impurities in the wastewater such as conductivity turbidity COD and BOD it is found that the optimum reduction conditions can reduce the impurities of the parameters that mentioned above were 19.32 2.60 54.77 and 16.67 percent respectively. CaCO3 and CaO produced from eggshell and mussel shell can be used to absorb impurities in wastewater before releasing into natural water sources.

Special Project Study on Invention Tray with pedestal (Phan-Poom) released the smell from the cocoon. Have a purpose to study the process of producing Phan Tray with pedestals releasing scents from silk cocoons and to study consumer satisfaction Towards the invention Tray with pedestal released the smell from the cocoons. In which a special project studier conducts studies and collects relevant information the data obtained was designed to sketch design. Release the scent from silkworm in 3 styles which are SKETCH DESIGN - A SKETCH DESIGN -B and SKETCH DESIGN -C so that 3 experts will consider the styles of the 3 Phan tray. Phan Based on comments of experts After that I brought Phan to inquire. Satisfaction of target group from 50 individuals the data were analysed using frequency percentage and average values with the analysis results as follows Design and process for making Phan Bush release the smell from cocoons the results showed that Most experts agree that the suitable silkworm varieties for Phanpanrote hybrid silkworm varieties were the large yellow silkworm cocoons because the large yellow silkworm cocoons were large. And easy to peel separate each colour clearly Natural colour cocoons and the components of the Phan Bush should be fabricated from silk cocoons. Satisfaction of the target group towards the product of Phan-Poom invention releasing the scent from the cocoons Product Found that the respondents were satisfied with the suitability of the yellow silk cocoon Pairote Maipradit averaged 4.56 at the highest level. In terms of value and usage they were satisfied in using in various ceremonies with the average value of 4.58 at the highest level. Price satisfaction 4000 baht with an average of 4.02 the highest level. And the distribution locations were satisfied in the online market with an average of 4.64 at the highest level.