The Madura State Polytechnic was known in abbreviation as POLTERA (in Indonesian), and formerly founded by Bina Sampang Mandiri (BSM) foundation in Madura island of Indonesia. The campus purposes to aim for the first Applied Technology model-based polytechnic college which is not similarly with Engineering model-based University. Since it was inaugurated as a state university as one of the well-known several polytechnics in East Java, which located in Sampang. Then previously founded in the year of 2012, the polytechnic is under the auspices of Ministry of Education (Kemendikbud). In the year of 2014, the auspices was replaced to the Ministry of Research, Technology and Higher Education (Kemenristekdikti). Poltera is not only educational role-model of engineering science in which was focussing towards maritime transport and marine technology as a kick-starter, but is also adopts model of industry-oriented education in tomorrow's engineer for the future of polytechnic (POLTECH).Since 2012, Poltera was the first vocational education system in Madura. So, Poltera is located in Camplong by UTC+07:00 or West Indonesia Time (WIB), Province of East Java, which institution is equivalent to the university, especially the Institute of Technology. Poltera has been officially established to organizes academic and non-academic activities, as the initial pioneer with the coordination of two well-known institutions from Surabaya, such as the Electronic Engineering Polytechnic Institute of Surabaya (EEPIS) and the Shipbuilding Institute of Polytechnic Surabaya (SHIPS) as the temporary foundation for the readiness, towards establishment of an independent polytechnic college. For the constructions, lectures, academics and its facilities, in which explanation based on interview of first Director, Ir. Achmad Ansori, DEA. that in mid-2016, Poltera plans to utilize existing building facilities for lectures program of the only applied courses in Madura and as the flagship campus in Indonesia, especially Madura. In 2012, Poltera initially established a diploma-three of associate degree (D3) with a percentage of weight between practice and theory is 70% pre-industry in approach and 30% theory of application that can be reached normally with 6 semester (3 years). While going to the future, Poltera is plans to established a diploma-four of bachelor's degree (D4) which is equivalent to strata one of bachelor's degree (S1), the difference lies in the percentage of weight between research, rules, and regulations. Those are 40% of applied scientific and 60% scientific method that can be completed in the normal period for 8 semesters (4 years). Since establishment, the Union of polytechnic (UNIPOLTECH) is an association of state polytechnic colleges in Indonesia (automatically), and Plotter Dies Natalis of birthday celebrations in which officially commemorated every 11 November by interval (born in 2012) of several achievement on progress..
In this study, a novel non-enzymatic electrochemical sensor based on a nanocomposite of reduced graphene oxide and conducting polyaniline, denoted as reduced graphene oxide/polyaniline/glassy carbon electrode (rGO/PANI/GCE), was developed for detecting nitrate ions in environmental water sources. The reduced graphene oxide/polyaniline nanocomposite was synthesised by dispersing graphene oxide in water to form a homogeneous suspension, preparing polyaniline separately through chemical oxidative polymerisation, and subsequently combining them while reducing graphene oxide to reduced graphene oxide to produce a uniform composite material. The reduced graphene oxide/polyaniline nanocomposites were deposited on a glassy carbon electrode and applied as the working electrode. The nanocomposite was characterised using Fourier-transform infrared spectroscopy, field-emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction. Cyclic voltammetry, electrochemical impedance spectroscopy, and square wave voltammetry were employed to evaluate the electrochemical behaviour of the sensor. The reduced graphene oxide/polyaniline/glassy carbon electrode exhibited electrocatalytic oxidation performance that surpassed those of the polyaniline/glassy carbon electrode, the graphene oxide/glassy carbon electrode, and the bare glassy carbon electrode. Under optimal conditions, the recorded current showed a linear correlation with nitrate ion concentration in the range of 7 to 45 µM. The regression equation was I = 22.943 + 0.863 C (R2 = 0.982). The sensor demonstrated a sensitivity of 0.863 µA µM−1 with a detection limit of 1.74 µM. It also exhibited reproducibility with a relative standard deviation of 2.99
The development of science and technology has experienced a very high acceleration. Along with this, the need for and demand for fast and accurate information is also getting higher. Based on this, this research aims to create an automatic portal model using UHF RFID. In addition, this model will have digital data documenting entry and exit of vehicles, so that it is easier in the process of monitoring data on students, lecturers and guests in carrying out activities within the Madura State Polytechnic (POLTERA) campus. To help security officers, and prevent transmission of Covid-19, an automatic entry and exit control system is needed. The purpose of this research is to design and build an automatic portal with RFID that has Ultra High Frequency (UHF) technology and additional driver body temperature detection technology. The temperature value and the RFID code are read by the RFID Reader and then the code is used as a condition for access to open and close the portal. After that, the recorded data in the form of RFID card data, temperature data, and driver images will be stored in a microSD data logger.
Previous empirical findings on the relationship between ESG disclosure and firm value have shown inconsistent results. Some studies suggest that ESG disclosure enhances firm value, while others view it as a cost burden or a managerial tool used for personal gain. These inconsistencies create uncertainty for stakeholders in making economic decisions and indicate that previous theoretical models may be incomplete. Addressing this gap, the current study introduces a new approach by incorporating financial performance as a mediating variable in the relationship between ESG disclosure and firm value. This study utilized panel data from 51 companies listed on the Indonesia Stock Exchange, covering the period from 2015 to 2022, with a total of 357 firm-year observations. Hypothesis testing was conducted using the PLS–SEM methodology through the WarpPLS 8.0 software. The results indicate that ESG disclosure does not have a significant direct effect on firm value. This study has three contributions. First, it provides an answer to previous studies showing inconsistent directions. Second, the outcomes lend support to the proposition that financial performance bridges the influence of ESG disclosure on firm value. Third, it provides an understanding to company managers that ESG disclosure is important to improving financial performance. The implications of this research indicate that ESG disclosure can be incorporated as a strategy to improve financial performance and indirectly strengthen firm value.
Baker’s yeast naturally occurs in plant materials with high glucose content, including sugarcane (Saccharum officinarum L.). This study aimed to isolate and identify yeast from sugarcane juice and evaluate its safety and potential application as baker’s yeast. The methodological workflow included isolation, purification, macroscopic and microscopic characterization, and molecular identification. Safety assessments consisted of hemolysis testing and the evaluation of phospholipase and protease enzyme activities. The technological potential of the isolates was examined through carbohydrate fermentation, tolerance to 50% glucose, flocculation capacity, and hydrogen sulfide production. Two isolates, designated SO1 and SO2, were successfully obtained. Molecular characterization revealed that SO1 shared 99.20% similarity with Hanseniaspora opuntiae, while SO2 showed 99.98% similarity with Candida akabanensis. Both isolates exhibited non-pathogenic characteristics, indicated by a hemolysis index (Hi) of 1 and phospholipase activity represented by a precipitation zone (Pz) of 1. Protease activity assay showed Pz values of 1 for H. opuntiae and 0.58 for C. akabanensis. Potency testing demonstrated that both species performed well in bread dough development, confirming promising leavening capabilities. Overall, H. opuntiae and C. akabanensis isolated from sugarcane juice are food-grade yeasts and are safe for use in bread production.
Mesoporous aluminosilicate decorated with nickel nanoparticles confined in the mesoporous channels enhanced the stability of catalysts for hydrocarbon production from non-edible oils. Mesoporous aluminosilicate (AlMs) synthesized via a mixture of Pluronic and Nanocellulose (NCC) as template (PN) was compared with Pluronic P123 (P) only. The role of NCC in increasing stability of Al-MS was observed on the preservation of high surface area (315 m2 g-1), mesoporosity (7.05 nm) and the absence of amorphous aluminosilicate cluster, allowing NiO deposition within the confined mesopores. A stronger Lewis acidity and open mesopores channel of Ni/AlMs(PN) promotes stability of the catalysts for four deoxygenation cycles of Calophyllum inophyllum oil (CIO) to green hydrocarbon diesel. Ni/AlMs (PN) achieved 99.11% conversion, 66.37% liquid yield, and 84.48% hydrocarbon selectivity with C15-C17 fractions (73.05%). This work demonstrates that NCC as a green co-template effectively produced high-performance catalyst with enhanced distribution of acid site for sustainable green diesel production.
