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Helminthiasis can be diagnosed by finding helminth eggs on a stool laboratory examination. Stool examination consists of qualitative and quantitative examination. One of the methods used in qualitative examination is the sedimentation method, this method utilizes the force of gravity by using a solution of lower density so that parasites can settle under the solution with the help of a centrifuge. One of the factors that affect centrifugation is time and speed. This study aims to determine the effect of time and speed of centrifugation on the profile of helminths eggs. The research was conducted at the meids laboratory of the Catholic Polytechnic Mangunwijaya Semarang. This type of research is experimental. Positive samples of Soil Transmitted Helminths (STH) eggs were centrifuged with time variations of 10 minutes, 5 minutes and 3 minutes at speeds of 3000 rpm, 2000 rpm and 1500 rpm. The data were then analyzed using Shapiro-wilk and Paired Samples T-test. Statistic test shows a difference of STH eggs profile between 3000 rpm 10 minutes and 2000 rpm 5 & 10 minutes, and 3000 rpm 3 & 5 minutes, between 2000 rpm 3 minutes and 1500 rpm 5 minutes, between 2000 rpm 10 minutes and 1500 rpm 5 minutes dan 200 rpm 3 minutes, between 3000 rpm 5 minutes and 2000 rpm 3 minutes (p < 0.05). There is an effect of variations in time and speed of centrifugation on the profile of STH eggs.

Soil in a construction must have a high soil density value, a high soil density value affects the carrying capacity of the soil in carrying the load on it. dynamic cone penetration test / DCP (Dynamic Cone Penetrometer) is often performed. To get the CBR value, the DCP test results are correlated with a DCP-CBR Value Correlation formula. However, to anticipate deficiencies in the CBR-DCP correlation test, it is necessary to correct it with the DCP-CBR Correlation Formula from the Ministry of Public Works and Housing which is generally accepted for all regions of Indonesia. This research was conducted by conducting DCP tests at 8 points in the field and then taking soil samples which would then be taken to the laboratory to test the physical properties of the soil. After all the data has been obtained, then analyze and formulate the DCP – CBR correlation formula and compare it with the correlation formula. After doing the research, it is found that the DCP – CBR correlation formula model studied has the formula Log CBR = 3.2322 – 1.512 Log DCP, where this formula is generally in accordance with the DCP – CBR correlation formula from the Ministry of Public Works because of the position of the curve. slightly above the curve of the DCP-CBR Correlation formula of the Ministry of PUPR

A level road intersection is a meeting place for vehicle flows from various directions both towards the intersection and leaving the intersection, so that at the intersection there is the potential for vehicle conflicts to occur which are at the same time at the same point. This causes the vehicle to reduce speed. Reducing vehicle speed at intersections results in the potential for queues and delays. Evaluation of the performance of the intersection needs to be done to find out the current performance of the intersection, so that anticipatory steps can be taken so that the performance of the intersection can be maintained and maintained in good condition. In this study, an analysis of intersection performance will be carried out using the Vissim software. In this study, an assessment of the unsignalized intersection of Pasar Butun, Balikpapan City was carried out. The data needed for input into the model include traffic flow data at rush hour or peak density hours, intersection geometry data. The output or results generated by the model are intersection performance information in the form of queue length and delay time parameters  Degree of Saturation (DS) for the existing condition is 1.70 and for the next 5 years it is 2.20. Parameters of queue length and time delay in existing conditions are 33.0 m and 3.65 sec/pcu and for the next 5 years projection are 87 m and delay time is 187.s/pcu

Acute Respiratory Infections (ARI) are upper and lower respiratory infections caused by infection or bacteria. According to WHO (2018), 40%-60% of the world's under-five population experience ARI. ARI occurs due to many factors, including LBW, Nutritional Status, Immunization Status, and Residential Density. This study aimed to determine whether there was a relationship between these factors and the incidence of ARI at the Batua Makassar Health Center. The design of this study used an analytical survey with a cross-sectional design. The research sample consisted of 90 children under five with a simple random sampling technique, and the measuring instruments used were questionnaires and KMS. Data analysis using chi-square test. The results of the study using the chi-square test obtained a value of P = 0.049 (LBW), P = 0.013 (nutritional status), P = 0.000 (research status), P = 0.001 (density of residence) because the -value = <0.05 then Ha is accepted, it means that there is a relationship of several factors to the incidence of ARI in toddlers at the Batua Makassar Health Center. From the results of this study, it can be said that the condition of LBW, nutritional status, immunization status, and density of residence has a significant relationship. Families are expected to add information by actively participating in activities carried out by health workers on reducing factors that can cause ARI in toddlers.

The use of sea sand in construction work from an economic point of view does have advantages. One of them is increasing the income of the sea sand collectors who are spread throughout the area in Fakfak Regency. In addition, the potential availability of sea sand is quite large and is able to accommodate all types of concrete construction work in this area. This study aims to determine and analyze the use of sea sand in the AC-WC mixture of course by doing the Marshall test. This study uses variations in asphalt content of 5.0%, 5.5%, 6.0%, 6.5% and 7.0%, this study was carried out using Marshall testing in accordance with the general specifications of Bina Marga 2018. The results of the research conducted showed a relationship asphalt content and Marshall parameters such as stability value, VMA, density, MQ at an asphalt content of 5.0%-7.0%, meet the specifications of 1932 kg, 19.84%, 2.26 gr/cm3 and 1031 kg/mm. Values of VIM, VFWA and flow at 5.5% asphalt content are known to not meet the mix spasticity, namely 8.07%, 59.71% and 1.67 mm. Based on the Marshall parameter data, the Optimum Asphalt Content value is 6.5%.