The decision to purchase household products of residents of Songgom, Songgom District, Brebes Regency decreased. The number of components that consumers consider in choosing an item is due to business developments in the trade sector. This makes buyers more specific in determining purchase decisions, for example at PT Sumber Alfaria Trijaya (Alfamart). This research was conducted in Alfamart, Songgom District, Brebes Regency. The existence of business competition makes Alfamart Songgom need to improve promotional procedures in increasing the number of buyers. The aim of this research is to determine the influence of promotion and service quality on purchasing decisions at Alfamart Songgom. The data used is primary data by distributing questionnaires to consumers at Alfamart Songgom. The population in this study were visitors or buyers at Alfamart Songgom. The number of samples in this test was 145 respondents who were determined using the Slovin formula. The data analysis procedures used are instrument tests, classical assumption tests, multiple regression tests. The results of the t test obtained a promotion variable sig value of 0.001 < a α value (0.05), a service quality variable of 0.010 < a α value (0.05, so it was declared to have a partial effect. The results of the F test obtained a sig value. of 0.000 < 0.05, explaining that promotion and service quality have a significant influence on purchasing decisions at Alfamart Songgom. 
 

Kalimantan acid sulphate land has the potential to be developed into productive land, with good land optimization. Utilization of rhizosphere microorganism diversity, especially mold can potentially provide a solution in optimizing agricultural land, namely the ability to produce extracellular enzymes. This study aims to determine the potential of mold originating from acid sulphate fields in producing extracellular enzymes (pectinase, chitinase, glucanase, cellulase, and phosphatase). The study was conducted in June-July 2019 at the Microbiology Laboratory, Indonesian Center for Agricultural Biotechnology and Genetic Resources Research and Development. Screening  of extracellular enzyme-producing fungi was carried out on selection media. The results obtained by some isolates have the ability to produce extracellular enzymes. Indications of the ability of mold to produce extracellular enzymes are the presence of clear zones in the selection medium. In pectinase, chitinase and glucanase testing all isolates showed negative results. Potential isolates in producing extracellular enzymes include Penicillium sp. Paddy 4.1 (cellulolytic index 2.43),  Clonostachys sp. KRMT 17.9 and Penicillium singorense KLK 13.7 (proteolytic indices 3.97 and 3,00, respectively). The difference in index values ??indicates the variation in the level of enzyme activity.

Convection Tas Loram Kulon is a Small and Medium Enterprises (UKM) located in the village of Loram Kulon, Jati District, Kudus Regency. The amount of effort makes everyone compete to be the best to get customers. When business owners cannot use information technology, a lot of information is wasted. Forms of manual reporting make it difficult for the owner to see the development of the business, as a result the owner can make mistakes in making decisions, especially for the addition or reduction of the stock. Forecasting is an estimate of the level of demand for one or more products over the coming periods. In forecasting the estimated level of demand in order to avoid excesses and not less inventory quantities based on past sales. Decision support investigated to predict the number of sales using the single moving average method. The Single Moving Average method uses a number of actual data requests to generate forecast values. The calculation is done by taking a group of values or data and then calculating the average and with the average used to calculate the next period forecast.