Search

The paper presents the effect of additional bioactivators and dosage of goat manure on organic fertilizer made from the waste of cocoa pod husk in Malang District. The experimental design of this study is a Randomized Block Design (RBD) with 2 factors (variation of bioactivators and dosage of goat manure) with 4 replications. For the statistical evaluation of a two-way analysis of variance (ANOVA) at the significance level of 0.05. If the significance of F was less than 0.05, pairwise comparisons were made using the Least Significant Difference (LSD) test at a significance on level of 0.05 (α=5%). The results showed that the waste of cocoa pod husk could be used as an organic fertilizer after composting for 32 days, where the application of bioactivator and dosage goat manure did not show a significant effect on parameters of pH, temperature, moisture content, N-total content, and C/N ratio, but for the parameter of C-organic, it showed that the addition of bioactivator and goat manure has very significant interaction. The best treatment of this research on the treatment of bioactivator Decoprima types and dosage of goat manure 1.0 kg (B3K2) with the resulting pH 7.31, temperature 32.53°C, the water content of 32.51%, C-organic 25.62%, N-total 1.95, C/N ratio 13.16 with shrinkage 31.8%. Processing of organic fertilizer from waste cocoa pod husk can increase the value and meet the quality standards of the Minister of Agriculture of the Republic of Indonesia with number 261/KPTS/SR.310/M/4/2019 and Indonesian National Standard 19-7030 2004. [ABSTRACT FROM AUTHOR]

In this research, fuzzy logic is used as artificial intelligence in the system, so that determining fish pond water quality can be done automatically. The fish pond used as the object of research, as relevant environment, is the gourami pond at Kalitengah village Blitar City East Java. Inside the system, there is a NodeMCU - ESP8266 which capacities as a microcontroller. What's more, there is a pH sensor that will peruse the pH estimation of the water from the pond. The water pH esteem information will be perused by the microcontroller for preparing utilizing fluffy rationale. After the consequences of the fluffy rationale show up, the outcome information will be shown through the OLED screen. Press button is additionally given as a route interface. The aftereffects of the fluffy rationale will likewise trigger the hand-off to move as indicated by the reference point. In the event that it meets the necessities to discard water in the pond, the framework will turn on the pump to deplete the pond water. The test incorporates testing fluffy rationale through both simulation and lab investigates the device. The examination between the simulation and the experiment from the test results shows a distinction in the normal consequences of - 2.14% with the most elevated contrast of - 4.61% and the least of - 2.89%. [ABSTRACT FROM AUTHOR]

In this research, IoT Lora technology is used to monitor the operation of the solar powered automatic pump. The advantage of the Lora system is that it is a much better range than using conventional WIFI connection. Using a Point to Point topology, there are two devices, a sending unit and a receiving unit. The sender is in charge of sending sensor reading data in the form of current values and the condition of the water pump electrical wire connection, while the receiver is in charge of receiving data from the sender and then translating it into digital data which is then displayed on the OLED for monitoring purposes. The receiver is also connected to the mobile app via Bluetooth connection. Data displayed on smartphone by using mobile app. Based on the test results, the average value of delivery delay is 26664.9 and an average Received Signal Strength Indication (RSSI) of -111.7. This test is done by sending 10 experimental data where the distance between the transmitter and receiver is 200 meters. It can be concluded that the system is able to work in accordance with the design that has been done. The system can work properly and detect abnormalities in the electric pump, then send it as a notification to residents, thus facilitating the pump maintenance process. [ABSTRACT FROM AUTHOR]

The development of information systems technology has increased significantly in various fields. The education sector is also inseparable from the development of information system technology. One of them is the existence of a mobile-based academic information system that can be accessed by students from their respective smartphones. In its implementation, it is necessary to conduct an assessment of the information system from human factors and technology so that it develops even better. In this study, an assessment of human factors and technology will be carried out using the TAM method and the Is Success Model. The questionnaire was processed using SSSs and SmartPLs to assess the variables and models used. The results showed that the perception of Self Efficacy had a positive influence on Compatibility, Information Quality, Information Security, and System Quality. Information Quality also affects Ease of Use which also affects perceived usefulness. Perceived usefulness also affects the use and recommendations for using mobile-based academic information systems. [ABSTRACT FROM AUTHOR]

It is essential to use enzymes as a substituting chemical to enhance the properties of pulp and paper. However, there is a limited match between the material and the enzymes applied. Therefore, this research aims to increase pulp and paper properties enzymatically by adding papaya latex bio-activator in the recycled pulp process using the hydrolyzing method. The results showed that this bio-activator made the fiber bulky due to the storage of more water in the pulp, thereby expanding the fiber surface, which facilitated tearing and increasing fibrillation in the refining process. This process led to changes in the surface morphology of fiber and structure of pulp fibers, which were determined from the Scanning Electron Microscopy (SEM) test. It also increased fiber fibrillation, which led to a rise in bond strength between fibers capable of raising paper properties. In conclusion, papaya latex bio-activator reduces the use of chemical hydrogen peroxide (H2O2), increases fibrillation in the refining process and reduces environmental liquid waste pollution. [ABSTRACT FROM AUTHOR]

One of the famous local rice in the border region of North Kalimantan Province with Malaysia is Adan rice. However, the long growth duration of Adan rice (around six months) means that local farmers can only plant this rice once a year. Efforts to shorten the life of Adan rice have been carried out using gamma-ray radiation, and resulted an early heading mutant lines with four-month old possessing physical characteristics similar to Adan rice. This study aimed to evaluate genetic variaton on selected Adan rice mutants using SSR markers. This research was conducted at the Molecular Biology Laboratory, Indonesian Center for Agricultural Biotechnology and Genetic Resources Research and Development, from February to July 2015. A total of eight selected short-duration mutants and Adan cultivar (its wild type) were genotyped using seventy one SSR markers located on all rice chromosomes. Genetic similarity among tested samples was determined using the Dice coefficient, followed by grouping the samples using the UPGMA method facilitated in NTSYSpc-2.02 software. The seventy one SSR markers produced 1-9 bands, 1-10 alleles with the PIC value ranged from 0.00-0.97. The dendrogram grouped the mutant lines into two groups at a similarity level of 65%. The first group contained Adan rice, A28, A25, and A27 rice mutant lines, while the second ones consisted of A51, A88, A93.1, A93.2, and A50 rice mutant lines. The group I can be used as candidates for mutant development at Krayan District, where Adan rice is usually planted. This research also showed that SSR markers can be used to identify the genomic changes in rice mutants. [ABSTRACT FROM AUTHOR]