This research was aimed to study the compressive strength chloride binding capacity and chloride diffusion coefficient of concrete replaced by ground bottom ash (GBA) and limestone powder in ordinary Portland cement (OPC). The water to binder ratios were 0.55. The results showed that the compressive strength of concrete with GBA was lesser than that of OPC concrete at 28 days. Also the compressive strength of concrete with limestone powder was close to that of OPC concrete and compressive strength could develop of concrete with GBA 20% and 30% higher than that of OPC concrete at 56 days. Moreover the total chloride of the concrete containing GBA and limestone powder was less than that of OPC concrete. The chloride penetration of the concrete containing GBA and limestone powder was less than that of OPC concrete. The chloride binding capacity of the concrete made with ground bottom ash and limestone powder were higher than that of OPC concrete. Finally the chloride diffusion coefficient of the concrete containing GBA and limestone powder was less than that of OPC concrete.

Piper Betel has been used as a medicinal herb in Thailand for a long period. Not only consumption but Piper Betal also has been used for religious belief and ritual. However the piper leave should be in the good condition without any defect. As a result there are numerous fall-grade leaves to be get rid of from agriculture. Increasing the value-added of this by- product can increase the income. Extraction of bioactive compounds by using alembic is uncomplicated and green without any solvent is required. Two products come out from this process the first one is an essential oil which is expensive. The second product is hydrosol. The piper hydrosol still contained various phytochemicals. In this study total phenolic content was investigated and was found to be in the range 31.16-73.71 GAE mg/g. Total antioxidant capacity was also studied using the DPPH method. The antioxidant activity was 0. 37▁(+)0.11 mg ascorbic acid equivalent/ ml hydrosol. However the piper hydrosol cannot inhibit P.ance S.aureus and S.epideminis. To sum up the piper hydrosol can be used as an ingredient for antioxidant cosmetics rather than antibacterial skincare.

The objectives of this research is to study the relationship between tolerance and measurement range of load cells. Tolerance test kit length of mass beam 90 cm was used. It can create the compressed force at the load cell more than 1 kN. The experiment cam be divided into 2 stages; 1.) verification of load range and 2.) linearity test. Both stages are tested at a temperature at 25°C using 10 to 30 kg of mass in the lowest compressed force condition of 0.091 kN and the maximum compressed force condition of 1.12kN As a result the linearity performance of the tolerance of the load cell test kit between calculated force and displayed value force are different 0.354 percentage only while the standard deviation of displayed value force and voltage signal output are 0.0013 and 0.0022 respectively. It reveals that the experimental result is reliable because of less than 1. In addition the tolerance of the load cell tolerance testing machine is 0.00300 (0.3 percent) which was calculated from the comparison of the tolerance specification of two main equipment that specified by manufacturer.

The objective of the research is study about the capacity Building ang Marketing Doctor of Business Administration Program of the University Rajamangala University of Technology Phra Nakhon to be consistent with sustainable development. To be in line with the country’s sustainable development direction.. I study in marketing strategy in product price place promotion or 4Ps strategy which they are used by the universities for persuasion the higher secondary school students choose to study in the universities. Moreover I study in the factor of influence for the decision to study in Universities of the first year students in an academic year 2560 of the universities under a bureau of University consultant teachers president of the Universities.

Currently in 2020 the world is facing a severe Covid-19 pandemic. More than a 20 million patients were infected and continue spreading the viruses. As a result there has been a huge demand for adequate hand sanitizers in the market especially an alcohol-based spray or gel product. The repeated use of hash formulas containing alcohol having an impact on the skin such as a skin irritant itch dryness an allergic reaction These damaged skin can lead to eczema an inflammatory skin condition. Besides using inappropriate formulation or ingredient in alcohol-based gel products can leave a sticky feeling after using the product. However using a high concentration of alcohol and spray alcohol to avoid this problem is not a suitable solution. Due to alcohol can destroy or inactive viruses takes at least 30 seconds. To reach the level of inactive condition the product should not evaporate too fast. The solve the mentioned problem the semi-gel alcohol-based product was developed by adding the skin moisturizers and Khlu’ s flower extract with high antioxidant activity. According to the result in this research the total phenol content of the flower extract is 3105.44+41.50 GAE mg/L extract whereas the DPPH radical scavenging is 0. 21+ 0. 02 equivalent vitamin C/ ml extract. From the sensory evaluation 20 healthy participated in this research. The majority of participants thought that the developed semi spray-gel product dried quickly and that neither product felt sticky after using. No drying effect on the hands. The product can enhance the moisture on the skin. However the smell needs to be more developed.