bluuebunny/crossref_metadata_2025 huggingface dataset:
KARAKTERISTIK PROKSIMAT DAN AKTIVITAS ANTIOKSIDAN PRODUK MIE KERING YANG DISUBSTITUSI DENGAN TEPUNG BUAH TINJANG (Rhizophora mucronata)
Authors:   Faculty of Fisheries and Marine, Universitas Airlangga, Mahdevi Syahfilia Nafa , Tjahjaningsih Wahju ,   Faculty of Fisheries and Marine, Universitas Airlangga, Pujiastuti Dwi Yuli ,   Faculty of Fisheries and Marine, Universitas Airlangga, Subekti Sri ,   Faculty of Fisheries and Marine, Universitas Airlangga, Nirmala Dwitha ,   Faculty of Fisheries and Marine, Universitas Airlangga, Andriyono Sapto ,   Faculty of Fisheries and Marine, Universitas Airlangga
Published: November 2023

Tinjang fruit (Rhizopora mucronata) is a mangrove plant that has a relatively high carbohydrate content. More processing is needed so that it can be utilized into processed forms, one of which is flour. The use of tinjang fruit flour in this study was used as a substitute for wheat flour in a food product. One of them is dry noodles. The purpose of this study was to determine the effect of tinjang fruit flour substitution on the proximate characteristics and antioxidant activity of dry noodles. This study used a Completely Randomized Design (CRD) method with One Way ANOVA Test. The treatment in this study was the substitution of tinjang flour with a percentage of 0%, 10%, 15%, 20%. The results showed that there was a significant effect between treatments on the proximate characteristics and antioxidant activity of dry noodle products. Dry noodle products with 10%, 15%, and 20% tinjang fruit flour substitution have fulfilled the SNI with an average value of water content, namely 0.69-4.04%, ash content, namely 1.84-2.38% and protein content, namely 11.00-12.78 %. The results of the antioxidant activity value with the best IC50 were found in dry noodle products with 20% of the tinjang fruit flour substitution, namely 115,761 ppm.
PENGARUH KONSENTRASI MAIZENA TERHADAP KARAKTERISTIK FISIKOKIMIA EDIBLE SPOON BERBASIS TEPUNG BEKATUL
Authors:   Universitas Katolik Widya Mandala Surabaya, Utomo Adrianus Rulianto , Yulita Maria Messiane ,   Universitas Katolik Widya Mandala Surabaya, Setijawaty Erny ,   Universitas Katolik Widya Mandala Surabaya
Published: November 2023

Penggunaan sendok berbahan plastik dan bersifat sekali pakai dapat meningkatkan jumlah limbah plastik dan mengakibatkan terjadinya pencemaran lingkungan. Solusi yang dapat dilakukan untuk mengurangi masalah limbah plastik tersebut adalah dengan penggunaan edible spoon karena dapat dikonsumsi dan terbuat dari bahan-bahan yang dapat terdegradasi. Pada penelitian ini bahan yang akan digunakan untuk pembuatan edible spoon adalah tepung bekatul dengan bahan pengikat yang digunakan adalah maizena. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh konsentrasi maizena terhadap karakteristik fisikokimia edible spoon berbasis tepung bekatul. Rancangan penelitian yang digunakan adalah Rancangan Acak Kelompok (RAK) dengan faktor tunggal. Faktor yang diteliti adalah perbedaan konsentrasi maizena dengan 6 taraf perlakuan, yaitu 5, 10, 15, 20, 25, dan 30% (b/b) dengan pengulangan sebanyak empat kali. Karakteristik fisikokimia yang dianalisis adalah kadar air, aktivitas air (Aw), daya rehidrasi, dan tekstur (daya patah). Hasil pengujian dianalisis dengan Analysis of Variance (ANOVA) pada α = 5% dan dilanjutkan dengan uji Duncan’s Multiple Range Test (DMRT) pada α = 5%. Hasil pengujian menunjukkan bahwa perbedaan konsentrasi maizena memberikan pengaruh yang nyata terhadap karakteristik fisikokimia edible spoon berbasis tepung bekatul. Peningkatan konsentrasi maizena menyebabkan peningkatan kadar air (4,21-7,52%) dan tekstur (2,641-7,865 N), serta penurunan aktivitas air (0,804-0,453) dan daya rehidrasi selama 5 menit (27,79 -12,79%), 10 menit (34,04 - 20,79%), 15 menit (42,41 - 22,66%), 20 menit (51,28 - 25,19%), 25 menit (65,34 - 29,93%).
Association of Obesity, Diabetes, Serum Lipids and Blood Pressure Regulates Insulin Action
Authors: Šindelka G , Škrha J , Prázný M , Haas T
Published: November 2023

Insulin resistance is present in patients with Type 2 diabetes mellitus as well as in obese patients without diabetes. The aim of our study was to compare insulin action in diabetic and control persons with or without obesity and to evaluate the influence of serum cholesterol, serum triglyceride and blood pressure on metabolic variables of insulin action. We examined 42 Type 2 diabetic patients and 41 control persons with body mass index (BMI) from 21.1 to 64.5 kg.m-2, and 33 to 71 years old. The isoglycemic hyperinsulinemic clamp technique was performed at an insulin infusion rate of 1 mU.kg-1.min-1 during 120 min. We evaluated the metabolic clearance rate of glucose (MCRG, ml.kg-1.min-1) as the most important indicator of insulin action by isoglycemic clamp. The Pearson's correlation and multiple regression models were used to compare studied factors with the insulin action. We found following predictors of insulin resistance expressed in the relationship with MCRG: BMI (r = -0.68, p<0.001), plasma glucose concentration (r = -0.66, p<0.001), cholesterol (r=-0.55, p<0.001), triglycerides (r = -0.54, p<0.001) and mean blood pressure (r = -0.38, p<0.01). From the multiple regression analysis we conclude that obesity may have even greater influence on the insulin action than diabetes mellitus itself.
Influence of Photoperiod on the Behavioral Response to Olfactory Stimulation in the Snail Helix pomatia L.
Authors: Voss M , Büchert C , Missfelder C
Published: November 2023

An ethanol vapor concentration of 1.6 mmol/l was used to test the diurnal variations of the olfactory response in two groups of snails, which were adapted to different light-dark cycles. The results revealed that the olfactory sensitivity to stimulation with ethanol was significantly increased during the day-time, which corresponds to the scotophase of the light-dark cycle, to which the animals had been adapted (c2-test, P < 0.01).
Transepithelial Potential in Mesonephric Nephrons of 7-day-old Chick Embryos in Relation to the Histochemically Detected Sodium Pump.
Authors: Zemanová Z , Ujec E
Published: November 2023

In order to obtain basic information on the transport properties of differentiating embryonic nephrons, we examined the 7-day-old chick mesonephros by measuring the transtubular epithelial potential difference (TPD) and by histochemical detection of Na,K-ATPase activity. TPD as an indicator of the electrogenic transport was measured in individual segments of superficial nephrons in vivo. Their electric polarity was always lumen-negative. TPD was reduced by addition of 10 mM KCN applied to the mesonephric nephrons from the outside. In the proximal tubules, TPD was significantly lower (mean±SD: -1.0±0.5 mV) than in the distal and collecting tubules (-2.2±1.0 mV, pŁ0.05). Activity of the sodium pump was evaluated histochemically by detection of ouabain-sensitive potassium-dependent p-nitrophenyl phosphatase in cryostat sections of the mesonephros. The enzyme activity was demonstrated only in distal tubules and in the collecting ducts, but not in the proximal tubules. These findings have revealed significant differences between embryonic nephron segments: the distal tubule, in contrast to the proximal one, is supplied by the sodium pump and is able to generate higher TPD. Therefore, we consider that it is only the distal nephron, which possesses the ability of active transport.
IMPELEMENTASI e-KINERJA TERHADAP PENILAIAN KINERJA PEGAWAI NEGERI SIPIL
Authors: Andrian Ryan , Cholil Widya
Published: November 2023

Penelitian ini dilakukan untuk mendapatkan informasi terkait implementasi penerapan e-Kinerja (LAPKIN) telah dirasakan manfaatnya bagi pegawai negeri sipil PNS di Kota Palembang. Aplikasi e-Kinerja digunakan oleh pihak pemerintahuntuk dapat mengukur suatu kinerja (performance) pegawai pemerintah dalam administrasi pelaporan kegiatan harian yang dilakukan oleh pegawai negeri sipil (PNS). Penelitian ini bertujuan untuk mengukur kualitas layanan dengan menggunakan model webqual dan esqual terhadap websitelaporan kinerja (LAPKIN) dan mengukur kinerja pegawai negeri sipil (PNS) dalam pelaporan kegiatan harian dengan menggunakan website LAPKIN sesuai dengan tugas pokok dan fungsi (TUPOKSI) di lingkungan pemerintah Kota Palembang. Populasi yang digunakan dalam penelitian adalah PNS dengan jumlah 11.136 pegawai yang bertugas di 52 (lima puluh dua) organisasi perangkat daerah (OPD) yang berada di lingkungan pemerintah Kota Palembang. Jumlah sampel yang digunakan sebanyak 622 responden. Metode yang digunakan dalam penelitian adalah metode kuantitatif (quantitative method). Model yang digunakan dengan menggunakan WebQual, ES-Qual dan work discipline.
PENGEMBANGAN KONSEP E-GOVERNMENT BERBASIS ICT UNTUK MASYARAKAT PINGGIRAN KOTA (STUDI KASUS : KOTA PALEMBANG)
Authors: Ipandy Ahkmad , Antoni Darius
Published: November 2023

The development of e-government is being carried out continuously. However, the goal of equitable utilization of e-government development has not been as expected, especially for people who live in the suburbs. For this reason, it is necessary to conduct research on the development of the concept of e-government for people who live in the suburbs. This concept is seen from Information and Communication Technology (ICT) aspect in the suburban community. There are six variables in this study. Those are an internet connection, transaction center, telecenter, government services, ICT training and education facilities, and information media. This research used qualitative methods. It was conducted to obtain all the facts related to the development of an ICT-based e-government model for suburban communities in Palembang
PERANCANGAN APLIKASI BANK SAMPAH “SAMPAHQU” BERBASIS MOBILE DI TANGERANG SELATAN MENGGUNAKAN RAPID APPLICATION DEVELOPMENT
Authors: Hery Hery , Kristina Helena Juliana , Jobiliong Eric , Christiani Agustina
Published: November 2023

Currently, household waste management has been managed by a waste bank so that the existing daily waste is collected and sorted to be recycled to make the environment better and less pollution-free. In carrying out its activities, the Garbage Bank in South Tangerang City experienced problems starting from the process of depositing waste from customers, the process of recording transactions and reporting transactions that occurred, modifying so that customer data collection, types of waste, and existing reports were still not well organized and there were no media. Communication can be used between the waste bank and waste bank customers. This research will design a waste bank information system for waste management in South Tangerang from the existing problems. The Rapid Application Development (RAD) methodology with the prototyping method is used in designing a mobile-based integrated waste bank application. The proposed system uses UML (Unified Modeling Language) modeling. The results of this study are an integrated waste bank application that can make a good contribution, namely helping the community to deposit their household waste and assisting waste bank managers in making effective and efficient recording and reporting
ANALISA WEBSITE PRODI SISTEM INFORMASI UNSIKA BERDASARKAN PRINSIP DAN PARADIGMA INTERAKSI MANUSIA DAN KOMPUTER
Authors: Tuzzahrah Ahzka Nabbilah , Voutama Apriade , Ridha Azhari Ali
Published: November 2023

The Unsika Information Systems Study Program Website is a place where Unsika Information Systems students can access information about lectures. The purpose of analyzing the Unsika Information Systems Study Program Website is to be able to find out the relationship between system functions based on the principles and paradigm of Human and Computer Interaction (HCI). In the Website interface design analysis, the author uses the heuristic evaluation method with the aspects being evaluated are human, technology, usability, and ergonomisc aspects. The results of the analysis prove that the Unsika Information Systems Study Program Website has fulfilled the aspects of Human and Computer Interaction where the goal of IMK itself is to make it easy for users to manage the system and be able to generate the required feedback.
PENERAPAN METODE SIMPLE ADDITIVE WEIGHTING UNTUK MEMILIH JURUSAN PADA KAMPUS NEGERI
Authors: Prabowo Harvey Guharelvino , Theresiawati Theresiawati
Published: November 2023

Students in grade twelfth high school must be able to determine their individual student interests to be able to continue further studies at university. But there are still many students who have not been able to determine their specialization even though they have sufficient understanding and knowledge of learning during high school. This study aims to apply simple additive weighting and calculation of the tightness capacity of each specialization major on a public campus in making a Decision Support System in determining student majors in the Angkasa High School environment. By paying attention to the weight and each criterion for the specialization major, then calculate with the tight capacity of the specialization department on each state campus so that the results issued by the calculation have provided decision support for students to determine specialization and state campuses more precisely. The decision support system uses the Kotlin programming language and Android-based NoSQL MongoDB database. The results of the manual calculation of the Simple Additive Weighting and Opportunity method with a decision support system reach 99% according.
Penerapan Theory Planned Behavior Dalam Memprediksi Revisit Intention Lokasi Wisata di Pulau Ambon
Authors: Sitaniapessy Arthur
Published: November 2023

The theory of Planned Behavior is one of the theories that can be used in predicting individual behavior in the future, including testing tourist intentions and behavior towards tourist sites that have been visited before. This study aims to apply the Theory of Planned Behavior (TPB) in predicting the revisit intention of tourists to tourist sites on Ambon Island. The variables included to support the application of TPB include tourist attitudes, subjective norms, and perceived behavioral control, which are antecedent variables of revisit intention. Respondents in this study were 141 students from various universities in Ambon City. Instrument testing was carried out using validity and reliability. The results of hypothesis testing using multiple regression show that all hypotheses proposed are supported. This indicates that tourist attitude, subjective norms, and perceived behavioral control strongly predict revisit intention.

Keywords: Tourism attitude, subjective norms, perceived behavioral control, revisit intention.

Abstrak

Theory of Planned Behavior merupakan salah satu teori yang dapat digunakan dalam memprediksi perilaku individu di masa yang akan datang termasuk untuk menguji niat dan perilaku wisatawan terhadap lokasi wisata yang pernah dikunjungi sebelumnnya. Tujuan dari penelitian ini mengaplikasikan Theory of Planned Behavior (TPB) dalam memprediksi revisit intention dari wisatawan terhadap lokasi-lokasi wisata yang ada di Pulau Ambon. Variabel yang disertakan untuk mendukung penerapan TPB ini antara lain sikap wisatawan, norma subyektif dan perceived behavioral control yang adalah variabel antesenden dari revisit intention. Responden dalam penelitian ini adalah mahasiswa berbagai universitas di Kota Ambon yang berjumlah 141 orang. Pengujian instrumen dilakukan dengan menggunakan validitas dan reliablitas. Hasil pengujian hipotesis yang menggunakan regresi berganda menunjukkan bahwa seluruh hipotesis yang diajukan terdukung. Hal ini mengindikasikan bahwa Sikap wisatawan, norma subyektif dan perceived behavioral control merupakan prediktor kuat dari revisit intention.

Kata kunci: Sikap wisatawan, norma subyektif , perceived behavioral control, revisit intention.
Pengaruh Program Budaya Organisasi, Kepemimpinan Situasional Dan Komunikasi Organisasi Terhadap Kinerja Pekerja Perkebunan
Authors: Septayuda Irwan , Mellita Dina , Trisiana Andari Karina
Published: November 2023

This study aimed to determine the influence of the Organizational Culture Program, Situational Leadership and Organizational Communication on the Performance of Plantation Workers in the Mill Division at PT. Hindoli - Cargill Company. The sample in this study were workers in the mill division of PT Hindoli-Cargill Company, with 119 respondents. The sampling technique uses the quota sampling method. This study uses a quantitative approach using a Likert scale. The analysis technique used is multiple linear regression. Test the hypothesis for research variables with a partial effect using the T-test, while research variables with a simultaneous influence use the F-test. Data processing uses the SPSS V.20 program to produce a regression equation Y = 3.623 + 0.155X1 + 0.164X2 +0.031X3. The results of this study are the Organizational Culture Program, Situational Leadership, and Organizational Communication have a positive and significant effect on the performance of workers at PT Hindoli-Cargill Company, indicated by the Fcount value of 5.704 > Ftable 2.68 with a significant level of 0.001.

Keywords: Organizational Culture, Situational Leadership, Organizational Communication, Performance

Abstrak

Tujuan dalam penelitian ini adalah untuk mengetahui bagaimana Pengaruh Program Budaya Organisasi, Kepemimpinan Situasional dan Komunikasi Organisasi Terhadap Kinerja Pekerja Pekebunan Pada Divisi Mill di PT. Hindoli Cargill Company. Sampel dalam penelitian ini adalah pekerja divisi mill PT Hindoli Cargill Company sebanyak 119 responden. Teknik penarikan sampel menggunakan metode kuota sampling. Penelitian ini menggunakan metode pendekatan kuantitatif dengan menggunakan skala Likert. Teknik analisis yang digunakan adalah regresi linear berganda. Uji hipotesis untuk variabel-variabel penelitian yang memiliki pengaruh secara parsial menggunakan uji T sedangkan variabel-variabel penelitian yang memiliki pengaruh secara simultan menggunakan uji F. Pengolahan data menggunakan program SPSS V.20 dengan menghasilkan persamaan regresi Y = 3,623 + 0,155X1 + 0,164X2 + 0,031X3. Hasil penelitian ini adalah Program Budaya Organisasi, Kepemimpinan Situasional dan Komunikasi Organisasi berpengaruh positif dan signifikan terhadap kinerja pekerja PT Hindoli a Cargill Company yang ditunjukkan dengan nilai Fhitung 5,704 > Ftabel 2,68 dengan tingkat signifikan sebesar 0,001.

Kata kunci: Budaya Organisasi , Kepemimpinan Situasional , Komunikasi Organisasi , Kinerja
Pengaruh Kompetensi dan Job satisfaction Terhadap Employee Engagament di PT Semen Baturaja Palembang
Authors: Utari Karmila , Setyadi Bakti , Helmi Sulaiman
Published: November 2023

Employee engagement is an essential factor affecting the performance and success of an organization. This survey investigates the effect of competence and job satisfaction on Employee engagement at PT Semen Baturaja Palembang. The research sample consisted of 98 employees who worked at PT Semen Baturaja Palembang. The instrument used in this study is a structured questionnaire that measures competency levels, job satisfaction, and employee engagement. The data collected was analyzed using a double linear technique with the help of the SmartPLS 3 application. The results showed that competency and job satisfaction had a significant effect on the level of Employee engagement by 55.3%. The conclusions of this study provide a deeper understanding of the factors that can increase Employee engagement in the workplace, thereby helping organizations develop effective human resource management strategies and improve overall performance.

Keywords: Competence, Job satisfaction, Employee Engagement

Abstrak

Employee engagement merupakan faktor penting yang mempengaruhi kinerja dan kesuksesan suatu organisasi. Penelitian survei ini bertujuan untuk menginvestigasi pengaruh kompetensi dan job satisfaction terhadap tingkat Employee engagement di PT Semen Baturaja Palembang. Sampel penelitian terdiri dari 98 karyawan yang bekerja di PT Semen Baturaja Palembang. Instrumen yang digunakan dalam penelitian ini adalah kuesioner terstruktur yang mengukur tingkat kompetensi, job satisfaction, dan employee engagement. Data yang dikumpulkan dianalisis menggunakan teknik linear ganda dengan bantuan aplikasi SmartPLS 3. Hasil penelitian menunjukkan bahwa kompetensi dan job satisfaction berpengaruh signifikan terhadap tingkat Employee engagement sebesar 55.3%. Kesimpulan dari penelitian ini memberikan pemahaman lebih mendalam tentang faktor-faktor yang dapat meningkatkan Employee engagement di tempat kerja, sehingga dapat membantu organisasi dalam mengembangkan strategi manajemen sumber daya manusia yang efektif dan meningkatkan kinerja secara keseluruhan.

Kata kunci: Kompetensi, Job satisfaction, Employee Engagament
Jaipur, Beyond the Frame: A Photographic Essay
Authors: Corby James , Rankovic Dragana
Published: November 2023

In ‘Jaipur, Beyond the Frame: A Photographic Essay’, defying the colourful aesthetic cliches of the India of the imagination, Dragana Rankovic’s black-and-white street photography documents daybreak encounters and an unpolished view of Rajasthan’s Pink City, offering James Corby an opportunity to reflect on the politics of framing and the economies of visibility in literature and beyond.
Air Quality Indices Assessment in Artisanal Gold Mining Areas of Zamfara State, Nigeria
Authors: Bate Garba Barde
Published: November 2023

Mining processes contribute significantly to air pollution which has been identified as the largest cause of human deaths worldwide. This research was therefore conducted to assess air pollution of three gold mining areas: Kwali, Maraba, Duke and a non–mining area: Kadauri in Zamfara State, Nigeria. Monthly measurements of CO, SO2 and NO2 wasdone using Gasman detection instrument (Crowcon–EExias IIC T5), particulates were determined using optical counter, buffered KI solution was used to measure O3 while temperature, humidity and pressure were measured using their respective meters over a period of one year. Air quality indices were calculated using the USEPA (1999) AQI formula, pollutants and meteorological factors relationships were determined using Pearson’s correlation and seasonal variation was measured using T–test. Highest and lowest CO were 25.85±7.42 µg/m3 in Kwali and 12.08±3.32 µg/m3 in Kadauri respectively, SO2 was also highest (48.15±12.42 µg/m3) and lowest (31.74±6.67 µg/m3) in Kwali and Kadauri respectively. O3 was highest (151.29±29.74 ppb) and lowest (107.38±21.95 ppb), while PM10 was highest (498.37±48.49 µg/m3) and lowest (319.31±44.86 µg/m3) in Duke and Kadauri respectively. Air quality parameters generally exceeded the WHO limit while CO, SO2, and PM2.5 had significant difference (P<0.05) across sampling stations. Mining areas had hazardous AQI with Duke being the highest (392) and Kadauri had 248 implying very unhealthy atmosphere. Pollutants correlated negatively with humidity and positively with pressure, temperature inversely correlated with NO2, SO2 and PM2.5 while pollutants’ dry season concentrations were significantly higher. Information and regulation of mining activities is suggested as well as the use of PPEs.
Micro, Macro and Home Economics (A comparative analysis)
Authors: Yousuf Mohammad Asad Bin
Published: November 2023

General people often misunderstood the concept of economics and usually relate economics with money. Economics is not only concern about money or financial condition, rather it emphasize on the choice human makes or decision human takes. Economics is an inevitable part of human life mainly concern about making choices. Economics is the submission of all kinds of choices human makes in every day’s life and living. Majority of the daily, weekly, monthly, yearly living and life choices a human made have nothing to do with money but still they are concerning issues of economics. Economics is broadly divided into two categories, Microeconomics and Macroeconomics. Beside these two broad classes, there is another section of economics namely the Home Economics. This article gives a first-hand knowledge and understanding to mass people about the three different sections of economics so that people can make better choices in their life and living.
Solution of drift-diffusion models for Organic Light Emitting Diodes (OLEDs)
Authors: Clarke Will , Urbainczyk Simon , Velikova Gergana V. , Zyskin Maxim , Richardson Giles , Hall Cameron L.
Published: November 2023

Drift-diffusion models are widely used to describe the transport and interactions of charge carriers in organic light emitting diode (OLED) devices. Solving these accurately and robustly is important for parameter optimisation and for predicting the effects of device design on the OLED's performance. Such models are generally expressed as systems of ordinary differential equations that are challenging to solve numerically for multiple reasons: the equations are inherently stiff; the discretised model equations are often ill-conditioned; and it can be difficult to impose internal boundary conditions between material layers. Here, we develop a numerical method based on finite element discretisation on a non-uniform mesh. The numerical results show that the solver deals with the stiffness of the problem, but extreme changes in carrier concentration still give rise to numerical difficulties. Later, we discuss approximate (asymptotic) solutions to the OLED model, suggesting the possibility to systematically derive reduced order OLED models.
Rancang Bangun Mesin Sangrai Sampel Biji Kopi Elektrik Kapasitas 250 Gram
Authors: Heri Sungkowo  , Rahman Azis Prasojo  , Dinda Ayu Amalia  , Rahmad Dwi Pramudya  , Muhammad Fahmi Hakim  , Bakti Indra Kurniawan  , Sukamdi
Published: November 2023

Coffee is one of the beverages with a distinct flavor profile. Coffee production continues to grow in response to community demands. A wide variety of coffee flavors have been developed, necessitating an effective coffee processing method, such as roasting. While many coffee production processes employ roasting machines with high capacities, smaller industries may incur losses when using such machines due to their production needs, which involve creating new coffee flavor samples. To address these challenges, a solution is proposed: the creation of a drum-based coffee bean sample roasting machine that utilizes the convection method. The machine manufacturing process involves calculating the drum capacity, heater specifications, motor rotation, and air flow. A 2000 Watt heater is chosen, accompanied by a maximum drum capacity of 250 grams. The driving motor is a 12 V DC motor. The combined power of the motor components totals 1520 Watts, and the overall heating capacity can achieve temperatures of up to 300ºC. Performance testing of the roasting machine is conducted under conditions where all components are functioning correctly. The final roasting results exhibit even distribution, with a preheating temperature range of 190-200ºC for approximately 15 minutes roasting time.
Analisis Penggunaan Transformator Sisipan Untuk Mengatasi Rugi Tegangan dan Pembebanan Lebih
Authors: Rachmat Sutjipto  , Heri Sungkowo  , Epiwardi  , Dhimas Dhesah Kharisma
Published: November 2023

On the JD267 distribution transformer with a capacity of 100 kVA at the Kalibaru feeder on the PT PLN (Persero) ULP Genteng experienced  overloading at WBP (88.03%) and high voltage losses. The magnitude of the load exceeds 80% of the standard transformer capacity and is in the bad category (load >= 80%) according to Table I. SE No. 0017.E/DIR/2014, related to transformer loading percentage. Meanwhile, the voltage loss of the JD267 transformer when the WBP is in Phase R is 19.05%, Phase S is 17.08%, and Phase T is 18.33%. This exceeds the voltage tolerance limit in SPLN 1:1995 that the voltage is not allowed to exceed +5% and -10% of the PLN standard voltage, namely 220 V. To handle this problem, PT. PLN (Persero) ULP Genteng carried out the installation of insert transformers by estimating load growth in the next 5 years using the Least Square method. After the addition of the insert transformer, the loading on the JD267 distribution transformer fell to 58.93% on WBP. Meanwhile, the magnitude of the JD267 transformer voltage loss when the WBP after insertion in the R Phase decreases to 0.84%, the S Phase is 1.04%, and the T Phase is 1.63%, and when the LWBP after insertion in the R Phase decreases to 0 .76%, S Phase 0.30%, and T Phase 0.6%. Based on the data above, adding an insert transformer can improve the loading percentage on the transformer and reduce voltage losses that occur at the end voltage of the transformer.
Analisis Pengaruh Skala Warna dan UV-Vis Terhadap Tingkat Penuaan Isolasi Minyak
Authors: Galuh Prawestri Citra Handani  , Duanaputri Rohmanita , Prasojo Rahman Azis , Wiwaha Sigit Setya , Akbar Divac Nabiel , Hastari Galih Pratiti Citra
Published: November 2023

A transformer is a static device that can transfer electrical energy using the principle of electromagnetic induction. In operating conditions, the increase of temperature in the transformer will cause the oil insulation having disturbance, which will cause the quality of the insulation to decrease. In this research, oil isolation type shell diala b was chosen which was placed in an accelerated thermal aging chamber experiment device. Then shell diala b oil insulation is heated to a temperature of 120 °C and 160 °C with three sampling times. After this, the oil insulation characteristics were tested which includes oil color scale testing and UV-Visible spectrophotometric testing of the oil. The research method used refers to the IEC 60216-3 2006 standard for aging time and ASTM D-1500 COLOR SCALE for color scale testing. After testing the characteristics of shell diala b oil insulation, it was found that the value of the color scale had increased. Besides that, there has been an increase in the absorption of UV-Visible rays within the oil insulation, which causes the color of the insulation become darker as the temperature and the aging duration in the accelerated thermal aging chamber increases.
Analisis Beberapa Jenis PLTS di Khatulistiwa Menggunakan Prototype alat ukur PV
Authors: Ananto Rhezal Agung , Handani Galuh Prawestri Citra , Santoso Asfari Hariz , Gumilang Binar Surya
Published: November 2023

Photovoltaic is employed to support the national electricity energy blending policy as an additional component of renewable energy. Efficient energy monitoring is utilized to understand the efficiency, energy requirements, and performance of Photovoltaic. This research aims to analyze the performance of a standalone Photovoltaic system. The study considers various parameters such as PV size, load, and charge controller. Additionally, it involves designing a monitoring tool used for the analysis of Photovoltaic performance. Performance measurements are conducted by comparing Photovoltaic systems of different sizes. Furthermore, performance measurements are compared with different types of charge controllers. To assess performance, solar energy is measured at various times using a solar power meter. The solar power meter is then used to analyze the research's performance. Energy monitoring involves measuring voltage, current, power, and energy using Atmega328p. The measurement data is utilized to evaluate system efficiency and design future systems. Monitoring is carried out directly on Photovoltaic systems in the equatorial region. This research measures solar energy, energy produced by Photovoltaic systems, and energy consumed by loads. Energy monitoring focuses on observing solar and Photovoltaic energy during sunlight hours (morning-evening). The analysis results can be utilized for designing efficient Photovoltaic systems in the future..
Uji Performa Trafo E-I dengan Variasi Rapat Fluks pada Sumber Tegangan Non-Sinusoidal
Authors: Slamet Nurhadi  , Anang Dasa Nofvowan  , Ika Noer Syamsiana  , Yanik Lailinas Sakinah  , Masramdhani Saputra  , Mochammad Nur Rochman
Published: November 2023

In the industrial field, transformers are used as a step-up voltage and are used as a step-down level. In a loaded transformer, the power that comes out of the transformer (transformer output power) is not always 100% because there are losses when channeling to the load. Both losses caused by current flowing in the copper wire, losses caused by alternating flux in the iron core, and losses caused by Eddy current in the iron core which result in the outgoing power (output power) from the transformer to the load is not the same as the incoming power (input power) to the transformer. This is known as the efficiency of the transformer. From these problems, the solution offered is to design and implement a transformer using an EI-shaped iron core which is arranged alternately which aims to prevent the occurrence of Eddy Current what happens in the coresolid by applying to the inverter. From the test results of the transformer, it can be concluded that the difference in flux density in the transformer when it is loaded will affect efficiency. The smaller the flux density of the transformer, the better the efficiency, while the greater the flux density of the transformer, the lower the efficiency.
Analisis Kinerja Sistem Proteksi Berdasarkan Peramalan Beban Pada Penyulang Galunggung
Authors: Mochammad Mieftah , Bakti Indra Kurniawan  , Ridzki Imron , Sutjipto Rachmat
Published: November 2023

The Galunggung feeder has a total line length of 10.68 kilometers and is supplied by power transformer number 1 at the Polehan substation, with a capacity of 30 MVA. As of December 2020, the peak load on the Galunggung feeder was recorded at 231.4 A, while the lowest load was 133.9 A. Up to the current condition, the Galunggung feeder is operating within standard parameters, with a voltage drop of 0.434 kV or 2.17%. However, it is possible that with future developments and an increase in the number of customers over the years, the energy demand will also increase. Due to this additional energy demand, the protection system may require adjustments to accommodate the increased load.After conducting load forecasting using simple linear regression, a forecast for the next 10 years was obtained. In the year 2030, it is anticipated that the Galunggung feeder will experience a 24% increase in load. With this load increase and no changes to transformers or conductors, there will be no alterations to impedance and short-circuit current calculations. Therefore, no protection setting adjustments are necessary. The recommended action would be to upgrade some transformers that are approaching their capacity limits.
Evaluation of skin prick location on the forearm using a novel skin prick automated test device
Authors: Seys Sven F. , Gorris Senne , Uyttebroek Saartje , Backaert Wout , Jorissen Mark , Schrijvers Rik , Daems Rembert , Loeckx Dirk , Van Gerven Laura , Hellings Peter W.
Published: November 2023

Background

The skin prick test (SPT) is the gold standard for identifying allergic sensitization in individuals suspected of having an inhalant allergy. Recently, it was demonstrated that SPT using a novel skin prick automated test (SPAT) device showed increased reproducibility and tolerability compared to the conventional SPT, among other benefits.

Objective

This study aimed to evaluate prick location bias using the novel SPAT device.

Methods

A total of 118 volunteers were enrolled in this study and underwent SPATs with histamine (nine pricks) and glycerol control (one prick) solutions on the volar side of their forearms. Imaging of the skin reactions was performed using the SPAT device, and the physician determined the longest wheal diameter by visually inspecting the images using a web interface. Prick location bias was assessed along the medial vs. lateral and proximal vs. distal axes of the forearm.

Results

In total, 944 histamine pricks were analyzed. Four medial and four lateral histamine pricks were grouped, and wheal sizes were compared. The longest wheal diameters were not significantly different between the medial and lateral prick locations (p = 0.41). Furthermore, the pricks were grouped by two based on their position on the proximal–distal axis of the forearm. No significant difference was observed among the four groups of analyzed prick locations (p = 0.73).

Conclusion

The prick location on the volar side of the forearm did not influence wheal size in SPAT-pricked individuals.
Developing type 1 diabetes resources: a qualitative study to identify resources needed to upskill and support community sport coaches
Authors: Lim Rachel J. , Roberts Alison G. , O’Dea Joanne M. , Shetty Vinutha B. , Roby Heather C. , Davis Elizabeth A. , Teo Shaun Y. M.
Published: November 2023

Introduction

Community sport coaches in Western Australia lack an understanding, the confidence, and knowledge in supporting young people with Type 1 diabetes (T1D). This study aims to identify what T1D educational resources are required to upskill coaches in Western Australia.

Methods

Semi-structured online interviews were conducted with i) young people living with T1D, ii) parents of young people living with T1D and iii) community sport coaches. The questions explored i) past experiences of T1D management in community sport ii) the T1D information coaches should be expected to know about and iii) the format of resources to be developed. Thematic analysis of interview transcripts was performed, and the themes identified were used to guide resource development.

Results

Thirty-two participants (16 young people living with T1D, 8 parents, 8 coaches) were interviewed. From the interviews, young people wanted coaches to have a better understanding of what T1D is and the effect it has on their sporting performance, parents wanted a resource that explains T1D to coaches, and sports coaches wanted to know the actions to best support a player living with T1D. All groups identified that signs and symptoms of hypoglycaemia and hyperglycaemia needed to be a key component of the resource. Sports coaches wanted a resource that is simple, quick to read and available in a variety of different formats.

Conclusion

The interviews resulted in valuable information gained from all groups and have reinforced the need for the development of specific resources to increase community knowledge and provide support for players with T1D, parents and sport coaches.
Unraveling the potential of breath and sweat VOC capture devices for human disease detection: a systematic-like review of canine olfaction and GC-MS analysis
Authors: Maidodou Laetitia , Clarot Igor , Leemans Michelle , Fromantin Isabelle , Marchioni Eric , Steyer Damien
Published: November 2023

The development of disease screening methods using biomedical detection dogs relies on the collection and analysis of body odors, particularly volatile organic compounds (VOCs) present in body fluids. To capture and analyze odors produced by the human body, numerous protocols and materials are used in forensics or medical studies. This paper provides an overview of sampling devices used to collect VOCs from sweat and exhaled air, for medical diagnostic purposes using canine olfaction and/or Gas Chromatography-Mass spectrometry (GC-MS). Canine olfaction and GC-MS are regarded as complementary tools, holding immense promise for detecting cancers and infectious diseases. However, existing literature lacks guidelines for selecting materials suitable for both canine olfaction and GC-MS. Hence, this review aims to address this gap and pave the way for efficient body odor sampling materials. The first section of the paper describes the materials utilized in training sniffing dogs, while the second section delves into the details of sampling devices and extraction techniques employed for exhaled air and sweat analysis using GC-MS. Finally, the paper proposes the development of an ideal sampling device tailored for detection purposes in the field of odorology. By bridging the knowledge gap, this study seeks to advance disease detection methodologies, harnessing the unique abilities of both dogs and GC-MS analysis in biomedical research.
Case Report: Integrated echocardiographic assessment guided Liwen procedure for treating obstructive hypertrophic cardiomyopathy with ventricular aneurysm
Authors: Zhang Rui , Zhao Fan , Wang Jing , Qin Yahong , Wang Tingting , Chu Ai-Ai
Published: November 2023

Hypertrophic cardiomyopathy (HCM) is a genetic myocardial disease, with an estimated incidence of 0.2%–6%, and is the main cause of sudden cardiac death (SCD) in young athletes. Left ventricular apical aneurysm (LVAA) is a rare subtype of HCM, accounting for about 5% of HCM patients, and has a higher incidence of cardiovascular adverse events. In cases of hypertrophic obstructive cardiomyopathy with LVAA (HOCM-LVAA) that do not respond adequately to optimized medical therapy, the echocardiography-guided percutaneous intra-myocardial septal radiofrequency ablation (PIMSRA, Liwen procedure) emerges as a promising and effective novel therapeutic approach. In this case report, we present for the first time a comprehensive application of echocardiographic techniques, including TTE, 2-D STE, and contrast enhancement, in the diagnosis, treatment, surgical guidance, and assessment of therapeutic outcomes in a case of HOCM-LVAA.
Research on top-level planning for sustainable high-quality development of China’s largest scale deep coal mining area
Authors: Xin Delin , Li Chen , Chen Tuantuan , Fang Xinying , Zhao Qiang , Chen Hu
Published: November 2023

Coal is the dominant energy source in China, as it has an advantageous position in terms of resource distribution. Against the backdrop of China’s high-quality economic development and the global energy crisis, after nearly a decade of preparation, the Xinjie Taigemiao Mine Area (XTMA) has entered the substantial planning and design stage. Based on the resource development conditions and the background of the times of XTMA, the paper provides an in-depth analysis of the connotation and characteristics of XTMA’s high-quality development. Subsequently, the overall development concept of “1358” for XTMA is proposed, which includes one strategic objective, three new models, five attribute goals, and eight assessment indicators. Based on this, a top-level planning and design for the implementation of high-quality development in XTMA is carried out comprehensively from aspects such as spatial layout, intelligent safety, integrated zero-carbon, ecological green, technological innovation, cluster management, and harmonious happiness. Finally, we look forward to the long-term blueprint for high-quality development of the XTMA and put forward urgent recommendations for current construction. The research on the high-quality development plan of XTMA will promote the development of China’s coal industry and is of great significance.
Correlation between diabetic retinopathy and diabetic nephropathy: a two-sample Mendelian randomization study
Authors: Fang Jiaxi , Luo Chuxuan , Zhang Di , He Qiang , Liu Lin
Published: November 2023

Rationale & objective

A causal relationship concerning diabetic retinopathy (DR) and diabetic nephropathy (DN) has been studied in many epidemiological observational studies. We conducted a two-sample mendelian randomization study from the perspective of genetics to assess these associations.

Methods

20 independent single nucleotide polymorphisms (SNPs) associated with diabetic retinopathy were selected from the FinnGen consortium. Summary-level data for diabetic nephropathy were obtained from the publicly available genome-wide association studies (GWAS) database, FinnGen and CKDGen consortium. Inverse variance weighted (IVW) was selected as the primary analysis. MR-Egger, weighted median (WM), simple mode and weighted mode were used as complementary methods to examine causality. Additionally, sensitivity analyses including Cochran’s Q test, MR-Egger, MR-Pleiotropy Residual Sum and Outlier (MR-PRESSO), and leave-one-out analyses were conducted to guarantee the accuracy and robustness of our MR analysis.

Results

Our current study demonstrated positive associations of genetically predicted diabetic retinopathy with diabetic nephropathy (OR=1.32; P=3.72E-11), type 1 diabetes with renal complications (OR=1.96; P= 7.11E-11), and type 2 diabetes with renal complications (OR=1.26, P=3.58E-04). Further subtype analysis and multivariate mendelian randomization (MVMR) also reached the same conclusion. A significant casualty with DN was demonstrated both in non-proliferative DR (OR=1.07, P=0.000396) and proliferative DR (OR=1.67, P=3.699068E-14). All the findings were robust across several sensitivity analyses.

Conclusion

Consistent with previous clinical studies, our findings revealed a positive correlation between DR and DN, providing genetic evidence for the non-invasive nature of DR in predicting DN.
Case report: Two unexpected cases of DGUOK-related mitochondrial DNA depletion syndrome presenting with hyperinsulinemic hypoglycemia
Authors: Guzman Herodes , Yazdani Sahr , Harmon Jennifer L. , Chapman Kimberly A. , Vitola Bernadette , Pyle Louise , McKnight Heather , Sigal Winnie , Lord Katherine , De Leon Diva D. , Merchant Nadia , Ganetzky Rebecca
Published: November 2023

Timely diagnosis of persistent neonatal hypoglycemia is critical to prevent neurological sequelae, but diagnosis is complicated by the heterogenicity of the causes. We discuss two cases at separate institutions in which clinical management was fundamentally altered by the results of molecular genetic testing. In both patients, critical samples demonstrated hypoketotic hypoglycemia and a partial glycemic response to glucagon stimulation, thereby suggesting hyperinsulinism (HI). However, due to rapid genetic testing, both patients were found to have deoxyguanosine kinase (DGUOK)-related mitochondrial DNA depletion syndrome, an unexpected diagnosis. Patients with this disease typically present with either hepatocerebral disease in the neonatal period or isolated hepatic failure in infancy. The characteristic features involved in the hepatocerebral form of the disease include lactic acidosis, hypoglycemia, cholestasis, progressive liver failure, and increasing neurologic dysfunction. Those with isolated liver involvement experience hepatomegaly, cholestasis, and liver failure. Although liver transplantation is considered, research has demonstrated that for patients with DGUOK-related mitochondrial DNA depletion syndrome and neurologic symptoms, early demise occurs. Our report advocates for the prompt initiation of genetic testing in patients presenting with persistent neonatal hypoglycemia and for the incorporation of mitochondrial DNA depletion syndromes in the differential diagnosis of HI.
On the corrosion of ductile cast iron by sulphate reducing bacteria—implications for long-term nuclear waste repositories
Authors: Tamisier Marc , Musat Florin , Richnow Hans-Hermann , Vogt Carsten , Schmidt Matthias
Published: November 2023

Ductile cast iron is a candidate material for long term nuclear waste repository canisters. However, little is known about microbial corrosion of this material, a phenomenon threatening the integrity of the repository. Here, the corrosion of ductile cast iron (92.73%–94.19% Fe) and mild steel (∼99.37% Fe) by the sulphate reducing bacterium Desulfopila corrodens were compared. Particular attention was payed to the impact of graphite nodules in ductile cast iron on the corrosion. The two materials developed similar crusts after 36 days. However, in the early corrosion stages different mineral compositions of the formed crusts were observed, e.g., dome shaped minerals (<1 µm) that formed on mild steel were absent on ductile cast iron. Further, iron sulphide was formed equally on all surfaces, the iron and graphite nodules. Our results contribute to the understanding of how microbial activity drives the corrosion of ductile cast iron made structures (e.g., canisters) in long-term nuclear waste repositories, particularly with respect to the mineral composition of the crust at different stages of the corrosion process. We propose that under the conditions used in this study, the ductile cast iron and mild steel bio-corrode similarly on long time scales which makes both material not favourable for use in long term nuclear waste repository with regard to microbial corrosion.