International Journal of Science, Technology & Management (IJSTM)
Not a member yet
1053 research outputs found
Sort by
Effect Of Sea Moisture Content On Corrosion Hull Of A Warship Made By PT Pal Indonesia
Get PDFSeawater temperature ranges from -2 0 c to 300 c. Low temperatures are usually found in seawater around the poles and on the deep seabed. Meanwhile, high seawater temperatures are found in the sea in the Arid area. The Red Sea and Bab El Mandeb have temperatures of about 290 c to 300. Corrosion is a subject matter that concerns various disciplines, or in other words, it connects elements of physics, chemistry, metallurgy, electronics and engineering. This study uses the literature review study method to collect, identify, evaluate the effect of seawater content on the corrosion of the hulls of warships made by PT Pal Indonesia. An effective corrosion control strategy should be selected with the selection of suitable coatings for the marine environment. Hull plating with paint has a special function to protect the construction of the hull, especially those located below the waterline and the construction of the ship above the waterline
Toxic Effect Of The Compound {1,3 Bis (P-Hydroxyphenyl) Urea} On Triiodothyronine (T3) Hormone Levels In Pregnant White Rats (Rattus Norvegicus L.)
Get PDFNon-steroidal anti-inflammatory drugs (NSAIDs) are among the most commonly prescribed drugs for pregnant women to treat fever, pain and inflammation. Specific NSAIDs can displace thyroid hormone from its protein binding sites, causing thyroid hormone measurement problems. {1,3 bis (p-Hydroxyphenyl)urea} is a modified p-aminophenol compound with potent analgesic and anti-inflammatory activity and less toxicity. This study is a follow-up to previous research to observe the toxic effect on triiodothyronine hormone levels after administration of {1,3 bis(p-Hydroxyphenyl)urea} compound in pregnant white rats. The toxic effect test was carried out by giving the test preparation to pregnant rats, which had been divided into five groups, namely the normal control group (CMC-Na 0.5%), the positive control (Gabapentin 50 mg/kg BW), Compound {1.3 bis (p- Hydroxyphenyl)urea} at a dose of 50 mg/kg BW, 500 mg/kg BW and 1000 mg/kg BW. Mice were given the test preparation every day from the 6th to the 15th day of pregnancy. Blood was taken on the 16th day, and T3 hormone levels were measured using the ELISA method. The results showed that the T3 hormone levels in the {1,3 bis(p-Hydroxyphenyl)urea group had no significant difference from the normal control group, so it was concluded that {1,3 bis(p-Hydroxyphenyl)urea) did not have a significant effect on the hormone T3
Growth, Intellectual Capital, Financial Performance And Firm Value : Evidence From Indonesia Automotive Firms
Get PDFThis study analyzes and explains empirical evidence of the effect of growth and Intellectual Capital respectively on financial performance and firm value, as well as the role of Financial Performance in mediating the influence of company growth and Intellectual Capital respectively on firm value. The benefits of this research are expected to be a reference that enriches the literature of Management Science, especially related to signaling theory and Resource Based Theory. In addition, this research is expected to provide benefits for automotive company managers in developing strategies that can improve financial performance and firm value, investors in automotive companies in making the right decisions in investing in automotive companies and the government in formulating policies related to automotive companies so that more investors invest in automotive companies. To test the hypothesis used Partial Least Square (PLS) analysis. The results of the hypothesis test show that: (1) the company's growth has a positive and insignificant effect on financial performance, (2) Intellectual Capital has a positive and significant effect on financial performance, (3) company growth has a positive and insignificant effect on firm value, (4) Intellectual Capital has a positive and insignificant effect on firm value, (5) financial performance has a positive and significant effect on firm value, (6) financial performance does not mediate the company's growth to the company's value and (7) financial performance mediates Intellectual Capital to the value of the compan
Characterization, Phytochemical Screening of Phyllanthus emblica L. Fruit Nanoherbal and Determination of the Estrus Cycle of Female Rats
Get PDFOne of a plant that is thought to have quite high antioxidant activity is kemloko (Phyllanthus emblica L.). This plant is a material that is often used by the community as a traditional medicine. This plant in India has been used to treat cancer, diabetes, liver (liver), heart problems and anemia. This biological activity is thought to be caused by the presence of bioactive compounds from secondary metabolites contained therein, especially compounds from the phenolic and flavonoid groups. The short length of the estrus cycle of rats makes them ideal for investigation of changes occurring during the reproductive cycle. The estrus cycle lasts four days and is characterized as: proestrus, estrus, metestrus and diestrus, which may be determined according to the cell types observed in the vaginal smear. Since the collection of vaginal secretion and the use of stained material generally takes some time, the aim of the present work was to provide researchers with some helpful considerations about the determination of the rat estrus cycle phases in a fast and practical way. This study began with macroscopic examination, examination of water content, examination of water-soluble extract levels, examination of ethanol-soluble extracts, examination of total ash content, and also an examination of acid-insoluble ash levels, phytochemical screening of Phyllanthus emblica L. fruit nanoherbal and determination of the estrus cycle of female rats. The results of phytochemical screening showed that the compound of Phyllanthus emblica L. Fruit nanoherbal contained a class of secondary metabolites of alkaloids, flavonoids, tannins, saponins, steroids/triterpenoids, and glycosides. And the estrus cycle of female rats can be determined by observing changes in vaginal epithelial cells
Assessment System of Halal Product Assurance Implementation in Indonesian Companies Using ID3 and Forward Chaining Algorithm
No full textThe majority of the population in Indonesia practices Islam, making halal products important and necessary to meet the rights and needs of Muslim consumers in Indonesia. Therefore, a halal assurance system is required, not only for obtaining halal certification, but also for maintaining continuity in halal production. The existing halal assurance system has been manual, hence the need for an automated computer-based information system that can assess the halal assurance system implemented by companies. This can make it easier and faster for novice users to assess the implementation of halal practices in a company. The ID3 algorithm is used to create decision trees, and the forward chaining algorithm is used for comparison. The web-based system is developed using PHP language and MySQL for data storage. Testing the system by comparing the final results with the manual calculations, as well as using the ID3 and forward chaining algorithms, yields the same results, indicating the successful development of assessment system of halal product assurance. In addition, user satisfaction testing resulted in a score of 87.34%, indicating that users are highly satisfied with the JaminHalal information system
The Influence of Incentives and Work Discipline in Increasing Work Motivation of PT. Berastagi
No full textThis study aims to determine the effect of work discipline on employee performance at PT. Berastagi Rantauprapat. To determine the effect of giving incentives to employee performance at PT. Berastagi Rantauprapat . To determine the effect of work discipline and intensive giving effect on employee performance at PT. Berastagi Rantauprapat. This type of research is associative research. Data collection in this study was carried out through a survey approach with a quantitative descriptive research type by distributing questionnaires to 35 respondents while the population used in this study was employees of PT. Berastagi Rantauprapat. Data collection techniques were carried out by interviews, questionnaires and documentation studies. The data analysis technique used in this research is descriptive analysis, multiple linear regression analysis, hypothesis testing using simultaneous significant test (F test), partial significant test (t test), and testing the coefficient of determination (R2). The results of this study indicate that partially the incentive variable has no positive and significant effect on employee motivation, partially that the work discipline variable has a positive and significant effect on employee motivation and simultaneously that the incentive and work discipline variable has a positive and significant effect on employee motivation
Simplification of the Prony Brake Dynamometer System Using Brake Caliper Load
No full textThe torque of the DC motor needs to be known to determine the maximum load that can be exerted at a given speed. Torque measurement can be done with a dynamometer. The dynamometer uses the Prony Brake type, which uses the principle of frictional force to provide a load on the motor. The application of frictional force uses brake capillary load to produce a dynamometer with the Prony Brake type that is simple in manufacture and testing but reliable and accurate in making measurements. In the Prony Brake dynamometer, there are usually two pieces of wood used as a link between the motor and the torque arm; at the end of the torque arm, there is a ballast whose ballast value is multiplied by the length of the arm to produce the torque value of the DC motor. The results of the trials that have been carried out are that the reading results of RPM sensors, weight sensors, and voltage sensors have a deviation of less than 2%, and the current sensor readings have a deviation of less than 5%. The Prony Brake dynamometer that has been made can read the maximum torque value with a deviation of about 2% from the existing data
The Influence Of Work Culture And Work Discipline On Employee Performance At Advent Hospital Medan
Get PDFHospital performance is very important to ensure that patients get the right care according to their needs. Hospital performance is also very important to ensure that hospitals can carry out their functions properly and efficiently, and are able to provide quality services to patients. This study aims to determine the effect of culture and work discipline on employee performance. This research was conducted at the Medan Adventist Hospital with a sample of 100 hospital employees. The results of the study show that the contribution of organizational citizenship behavior and social intelligence to performance is 72.0% so that a high work culture and discipline improve employee performance so that it motivates employees to work. Disciplined behavior will lead to productivity and end in performance
Evaluation Of The Quality Of The Online Sales Application Of Light Steel Material Using The Mccall Quality Factors Method
Get PDFWe are unable to survive without technology in today's entirely digital environment. Especially when managing corporate activities that depend on technology, hardware or software can be used in the technology. This business manufactures items out of mild steel. The prioritized products include roof trusses, building frame columns, and metal roof tiles. This business uses soft steel elements to provide three applications to support online sales. But because the organization has yet to conduct any testing, there are still a lot of faults or problems, making it necessary to manually assess the mobile application until a scenario report is generated and the testing findings are implemented. Scenario photographs and error sections make up the data that was collected. Based on this, the application's quality has been assessed to determine the correctness, comprehensiveness, and standard of the software used in the Metalmens Application. However, the system's quality still needs to be discovered. The McCall method is used as the measurement technique in this investigation. According to the McCall Method results, the quality of Metalmen Applications is solid, scoring 84%, with dependability scoring 84% and reliability scoring 62%. Dependability is the best indicator, scoring 84%
Application of The Completely Random Design Statistics Method For Analysis of Different Filter Types In Fresh Water Fish Pool Water Recirculation System
No full textIn meeting their daily water needs (bathing and washing), the majority of the people of South Kalimantan (South Kalimantan) have been using river water and peat well water, as is the case for fresh water fisheries. However, the water used is cloudy and smells because it is water that is polluted by household waste, and of course it shows the quality of the water that is still being debated for the process of fish cultivation. In the process of cultivating freshwater fish, the standard mechanism is still used, namely by making tarpaulin ponds for fish ponds and river water as a medium for fish cultivation and the process of providing feed. In the process there are several things about water quality and conditions, and several other issues, namely about water circulation, temperature, humidity, pH and oxygen regulation of fish pond water. Fish excrete waste from leftover feed and metabolism which contain lots of ammonia (Effendi, 2003). Fish excrete 80-90% of ammonia through osmoregulation processes, feces and from urine. To produce quality pond water as a medium for fish cultivation, it is necessary to have a proper and good water filter. This study aims to obtain the best filter substrate in increasing the growth and survival of freshwater fish fry reared using polluted river water in a tarpaulin pond with a recirculation system. The filter method used in this study was an experimental method using one factor Completely Randomized Design (CRD) with four treatment levels and three replications. The treatments applied were P0 = Zeolite, Charcoal, Japmate, Bio Foam, P1 = Bamboo, Charcoal, Japmate, Bio Foam, P2 = Bioball, Charcoal, Japmate, Bio Foam and P3 = Bioring, Charcoal, Japmate, Bio Foam. The resulting data were analyzed for analysis of variance (ANOVA), then continued using the BNT test with 95% and 99% confidence intervals. From the results of the study, the measurement results obtained were for the specific growth rate test (SGR) of 1.15%, the survival test (SR) of 86.66% and the feed conversion ratio test (FCR) of 3.10%. While the supporting parameters are water quality, namely the results of water quality, namely, temperature 28.1 – 30.3 0C, pH 7.4 – 8.1, DO 5.24 6.53 mg/L, NH3 0.06 – 0.40 mg/L, NO2 0.056 – 0.90 mg/L and NO3- 0.28 – 0.190 mg/L. In addition to producing filter products that can support SGR, SR and FCR in freshwater fish, it is hoped that this research will also produce scientific paper outputs that will be published in International Conferences/International Journals and become part of the Study Program's Coursebook for the Accounting Department. Computerized Poliban Accounting and can be applied in the community through the Community Service progra