bluuebunny/crossref_metadata_2025 huggingface dataset:
Dynamic Key Replacement Mechanism for Lightweight IoT Microcontrollers to Resist Side-channel Attacks
Authors: Kuo Chung-Wei , Wei Wei , Lin Chun-Chang , Hong Yu-Yi , Liu Jia-Ruei , Tsai Kuo-Yu
Published: December 2024

5G technology and IoT devices are improving efficiency and quality of life across many sectors. IoT devices are often used in open environments where they handle sensitive data. This makes them vulnerable to side-channel attacks (SCA), where attackers can intercept and analyses the electromagnetic signals emitted by microcontroller units (MCUs) to expose encryption keys and compromise sensitive data. To address this pressing issue, we proposed a highly efficient key replacement mechanism tailored specifically for lightweight IoT microcontrollers. This mechanism established a secure Diffie-Hellman (D-H) channel for key transmission, effectively preventing key leakage and providing strong defense against SCAs. The core of this solution lied in its integration of the Moving Target Defense (MTD) approach, dynamically updating encryption keys with each cryptographic cycle. Experimental results demonstrated that the proposed mechanism achieves key updates with minimal time overhead, ranging between 12 and 50 milliseconds per encryption transmission. More importantly, it exhibits resilience against template attacks. After 20,000 attack attempts, only 2 out of 16 AES-128 subkeys were compromised, reflecting a significant improvement in the security of IoT devices. This dynamic key replacement mechanism dramatically reduced the risk of data leakage, offering an effective and scalable solution for lightweight IoT microcontroller applications that require both efficient performance and strong security.
Clinical Outcomes and Patterns of Traumatic Injuries Associated with Subway Incidents at a Level 1 Trauma Center
Authors: Sharma Bharti , Agcon Aubrey May B , Agriantonis George , Cheerasarn Sittha , D. Bhatia Navin , Shafaee Zahra , Whittington Jennifer , Twelker Kate
Published: December 2024

Objectives: Subway-related accidents have risen with advancements in the system. We aim to study the injury patterns from these incidents. Methods: This is a retrospective study from a single center, covering patients from January 1, 2016, to December 31, 2023. Patients were identified using International Classification of Diseases (ICD) injury descriptions and Abbreviated Injury Scale (AIS) body regions. Results: Out of 360 patients (total), 23.5% presented with head injuries with an AIS score ≥ 3. Patients with blunt trauma (93.99 %) were higher than penetrating (5.74%) and burn trauma (0.3%). Overall, the mean Injury Severity Score (ISS) is 10.69, suggesting a broad range of traumatic injuries. ISS for severe injuries (17-24) comprised 9.2%, moderate injuries (10-16) were 17.5%, and minor injuries (1-9) were 60.8%. Falls had the highest percentage of traumatic brain injury (TBI) (65.60%) and fractures (67.50%). Assaults showed a significant occurrence of traumatic thoracic injuries (28.90%). Suicide attempts demonstrated a high percentage of traumatic amputations (30.80%). In the emergency department (ED), most patients (69.4%) were admitted for further care, such as trauma, neurosurgery, or others. 0.5% died in the ED, 0.5% died on arrival, and 1.04% died within 15 minutes of arrival. The mortality rate among serious fall patients was 17.20% as compared to the suicide and train-struck groups at 37.90% each. Conclusion: There were high occurrences of TBI, and fractures, thoracic injuries, amputations. Patients with blunt trauma were a lot higher than those with penetrating and burn trauma. The mortality rates observed in the suicide and train-struck groups were higher than in patients with severe falls.
Convergence of Implicit Iterative Processes for Semigroups of Nonlinear Operators Acting in Regular Modular Spaces
Authors: Kozlowski Wojciech M.
Published: December 2024

Let C be subset of a vector space, and consider a semigroup of nonlinear mappings Tt:C→C, where t∈[0,+∞). The common fixed points of this semigroup can be interpreted as stationary points of a dynamic system defined by the semigroup, meaning they remain unchanged during the transformation Tt at any given time t. This paper focuses on semigroups of ρ-nonexpansive mappings in an abstract modular space Xρ, where ρ is a regular convex modular. By employing recent results on the existence of such stationary points, we demonstrate that, under specific conditions, the sequence {xk} generated by the implicit iterative process xk+1 = ckTtk+1 (xk+1) + (1 − ck)xk is ρ-convergent to a common fixed point of the semigroup. Our findings extend existing convergence results for semigroups of operators from Banach spaces and modular function spaces to a broader class of regular modular spaces.
Peptides Production With High Antioxidant Activity from Buttermilk by Enzymatic Hydrolysis and Ultrafiltration in a Membrane Bioreactor (MBR)
Authors: Fortuna Sandrini Slongo , Graciola Samarah , Trindade Fabiano Vieira , Tozatti Gustavo Henrique , Novello Dominique Trindade , Steffens Juliana , Fernandes Ilizandra Aparecida , Brião Vandré Barbosa
Published: December 2024

The world's production of butter generates 6.5.106 tons per year of buttermilk. This byproduct has important nutrients such as proteins, lactose, and salts. Proteins can be broken to produce peptides, which have biological activity as antioxidant and antimicrobial. This study aimed to obtain peptides of low molar weight from buttermilk by a combined process using enzymatic hydrolysis and ultrafiltration (UF). Different enzymes showed different hydrolysis degrees (HD), as the sequential hydrolysis with Alcalase® and Neutrase® reached a HD of 34 %. UF separated the peptides of low molar weight by applying 100 kPa (1 bar) of pressure and under 40 ºC. The UF membrane (with the molar weight cut off - MWCO in a range of 30 – 80 kDa) rejected 38 % of proteins from hydrolysed buttermilk. The ultrafiltered hydrolysed buttermilk has higher antioxidant activity when compared to the buttermilk. The results have shown that it is possible to obtain peptides with antioxidant activity allied to the valorization of a dairy byproduct from the dairy industry.
Descriptions of the Fungi Entopeltacites mexicanus sp. nov. and Phagomycetus Paleus Gen. Et Sp., Nov. Serving as a Source of Nutrition for Nematodes and Sialomorphs in Mexican and Dominican Amber, Respectively, and the First Report of a Mycophagus Bacteri
Authors: Poinar George O
Published: December 2024

Descriptions of the free-living fungi Entopeltacites mexicanus sp. nov. and Phagomycetus dominicanus gen. et sp., nov. are provided. The former fungus serves as a source of nutrition for the nematode Oligaphelenchoides atrebora in Mexican amber and the latter fungus serves as a source of nutrition for Sialomorpha dominicana in Dominican amber.
The manner of obtaining nutrients from the above fungi differs, since the
the nematode (O. atrebora) penetrates the fungal hyphae with its stylet while the sialomorph (S. dominicana) removes and ingests sporangia and sporangiospores with its mandibles. A mycophagus bacterium was discovered infecting a spore of the nematode parasitic fungus. This is the first record of a fossil bacterium infecting a fungal spore.
Identification of Interstitial Cystitis-Related Genes Through Bioinformatics Analysis and Mendelian Randomization
Authors: Zhao Fuguang , Guan Yawei , Teng Jingfei , Ma Chong , Ji Xiang , Li Zhihui , Gao Feng , Luo Xiao , Zheng Yajie , Ai Xing , Wang Yibin
Published: December 2024

Interstitial cystitis, also referred to as bladder pain syndrome (IC/BPS), is a chronic condition characterized by pain in the bladder and pelvis. The underlying pathogenesis and useful biomarkers still remain unclear. Bioinformatics and Mendelian randomization approaches were utilized to investigate genes associated with IC and identify potential signaling pathways involved. We identified expressed genes (DEGs) using two IC datasets from the Gene Expression Omnibus (GEO) database and used the expression quantitative trait loci (eQTL) and IC genome-wide association studies (GWAS) data for two-sample Mendelian randomization (MR) analysis to determine co-expressed genes. Subsequently, we performed immune cell infiltration and Gene Set Enrichment Analysis (GSEA) analysis to investigate the functional roles and pathways associated with these genes. Lastly, we validated the findings related to the identified co-expressed genes. We identified 447 high-expressed genes and 326 low-expressed genes in IC. Through MR analysis, three significantly co-expressed genes (CD38, FPR1, and SLA) were identified, which exhibited significant positive causal effect on IC. Additionally, elevated levels of activated CD4 memory T cells were observed in the IC patient group, correlating with the three co-expressed genes. Furthermore, these genes are involved in essential biological processes and pathways, including adaptive immune response, immune receptor activity chemokine signaling pathway, cytokine-cytokine receptor interaction, and JAK stat signaling pathway. Finally, we validated the high expression levels of these three genes in an independent cohort. CD38, FPR1, and SLA are promising target genes for the diagnosis and treatment of IC, warranting further research to explore their roles in IC. This strategy has the potential to promote the development of highly specific biomarkers and therapeutic targets, thereby enhancing both diagnostic accuracy and treatment options for IC.
APPROXIMATE RELATIONSHIPS FOR DETERMINING THE ENTHALPIES OF WATER AND STEAM IN THE CALCULATIONS OF HEAT EXCHANGER DEVICES OF STEAM TURBINE INSTALLATIONS (PART I – DETERMINATION OF THE ENTHALPY OF WATER)
Authors: Shubenko Oleksandr , Goloshchapov Volodymyr , Kotulska Olga , Paramonova Tetiana
Published: December 2024

The work is devoted to the creation of a methodological approach for determining the thermodynamic properties of water and water vapor in the calculation of heat exchange processes for those cases when it is necessary to quickly control the operating modes of steam turbines of large power of thermal and nuclear power plants, but the use of existing tables of properties of working environments in the "manual" mode is not always suppose. In the presented part of the work the determination of the enthalpy of water is considered. Based on the analysis of the operating modes of heat exchangedevices of power units thermal and nuclear power plants of different capacities, the ranges of temperature and pressure changes of the working media during their calculations were determined. They are for water: at a pressure of 1 kPa–30 MPa, at a temperature of 1–300 °С, and for steam, respectively: 1 kPa–6 MPa, 7–450 °С. The analysis of tabular values of the working medium (water) showed that in order to present the enthalpy of water in an analytical form based on approximation equations with the required accuracy, it is advisable to consider their construction in two areas of change: in the area of vacuum (Р < 0.1 MPa) and in the area of excess pressure (0.1–30 MPa), which in turn are divided into 4 ranges. When thepressure changes, this is associated with an additional effect on the temperature enthalpy value, which complicates the choice of approximate dependencies for obtaining enthalpy from the parameters of the working environment while ensuring an acceptable ratio of calculated and tabular values for solving problems. By the authors a system of regression equations was obtained, allowing to calculate the enthalpy of water in a given range of pressures and temperatures with high accuracy. To determine the area in which the measured value is located, the authors proposed the use of Antoine's formula, in which the relationship between the pressure and temperature of the medium at the boundary line of the phase transition is established. To increase its accuracy, approximation equations for temperature corrections at different pressures are proposed, which ensure that the temperature deviates from the tabulated values of thermophysical properties there are no more than ±0.04 °С.
ENSURING THE SEALING OF GAS WELLS EQUIPPED WITH LINER
Authors: Rymchuk Danylo , Tsybulko Serhii , Rezvaya Kseniya
Published: December 2024

The current problem of fountain safety, which affects the further well operation, namely the problem of their sealing, is considered. Traditional and modern technologies used to ensure the sealing of gas wells (including offshore wells), equipped with liners that simultaneously cover gas and water layers, are analysed. The issue of mandatory testing of casing strings in two ways is considered in more detail: pressing after lowering and cementing of the liner; lowering the level of the working fluid in the wellbore. These tests are intended to detect the fact of the well sealing and its suitability for further operation, or to detect the sealing fact and at the same time collect data for the analysis of the further action plan to overcome the consequences of such sealing. The sequence of testing casing strings using vaporizer-type coiled tubing installation that consumes liquefied nitrogen is considered. Schemes of well tying during tests of the production casing are presented. The peculiarities of the pressing process when nitrogen is injected into the annular space and into the tubing are noted. As a result of calculating of nitrogen injection pressure (the permissible value of which was 80 % of the testing pressure of the production casing) and the permissible pressure in the casing pipes, a comparative graph was constructed. The analysis of the received data confirmed the feasibility of pressing using a coiled tubing unit when pumping liquid into the tubing, as a result of exceeding the permissible pressure value at a depth of 3500 m. The need to use an operational packer, which was installed in the pipeline at the level between the head of the liner and the productive horizon, was determined. The necessity of perforating the liner through the inner space of the tubing using a hydraulic sandblasting perforator was confirmed.
SYNTHESIS OF HYDROPNEUMATIC DRIVE SYSTEM SCHEMES ON SEVEN-LINEAR DISTRIBUTORS
Authors: Cherkashenko Mykhailo , Cherpakov Mykyta
Published: December 2024

The purpose of the article is an in-depth study of ways to improve hydraulic and pneumatic systems using seven-line distributors. The main advantages focused on include increased efficiency, increased ease of installation, reduced hardware costs, and lower cost of the hydropneumatic actuator, these are the main components that must be guided when designing hydraulic and pneumatic circuits. When achieving these indicators, the hydraulic equipment used in the system plays an important role. Due to the idea of using extremely universal modules, the article investigated distributors with more lines than in standard solutions, namely seven-line hydraulic and pneumatic distributors. The conventional notation of the seven-line distributor is given. The minimal combinations of functions that can be implemented using seven-linear distributors are considered. It was determined what can be considered a trigger. Examples of the use of seven-line dividers in the construction of flip-flops with a dominant zero and flip-flops with a counting input are given. A detailed description of the operation of such triggers is given. The possibility of expanding the functions of the command apparatus was investigated. A detailed description of the command apparatus built on seven-line distributors is made. The definition of the concept of graph of operations is given. A graph of operations for a molding machine is built. On the basis of this graph, logical equations are constructed that describe the entire system operation process and transition states, taking into account the signals that move the system to the next state and the signals acting inside the transition. A pneumatic circuit for the molding machine was also constructed based on the obtained logic equations. A seven-line command apparatus was used to build this scheme, which demonstrates the possibilities of using a seven-line command apparatus in practical conditions. The areas of application of such command apparatus and seven-line distributors are considered.
HYDROSTATIC TESTING TECHNOLOGIES IN THE METALLURGICAL INDUSTRY
Authors: Fatyeyev Oleksandr , Fatieieva Nadiia , Krasylnyk Anatolii , Shyian Anatolii , Valerii Poliakov
Published: December 2024

The development of the new test presses is based on the requirements of modern technologies for the extraction of oil from ultra-deep wells and shale gas to test the strength of pipes up to higher test pressures. The hydrostatic test algorithm involves pushing test heads onto the ends of the pipe to seal the internal cavity of the pipe. Then the pipe is filled with a water emulsion and the pressure of this emulsion is increased to the value specified in regulatory documents. For high-pressure hydrostatic testing of oil and gas pipes, the most advantageous method is the external sealing of pipes using segmental sleeves. The mechanical testing equipment should take into account the compensation of axial forces from the pressure of the test fluid inside the pipe, for which purpose the press frame should be power-operated. The most common power scheme of test presses is considered, in which all axial forces arising from the action of the fluid pressure inside the pipe on the test heads are compensated by reaction forces in the power columns. The front head is rigidly connected to the columns, and the rear head is placed on a movable carriage to compensate for uneven pipe lengths. In the working position, the rear carriage is fixed to the columns with special locking mechanisms. It is advisable to improve the quality of the test by improving the design of the hydraulic system elements and studying the processes during the rise and retention of high pressure. The test pressure inside the pipe is created mainly by means of a hydraulic pressure multiplier. The parameters of the multiplier: multiplication factor, piston diameter and stroke are selected depending on the required test pressure, length and diameters of the pipes to be tested. Research on high-pressure hydraulic systems of the multiplier type is of particular interest at present.
BEFORE FEEDING THE INTEGRATED PERFORMANCE OF WORKING WHEELS OF RADIAL- AXLE HYDROTURBINS
Authors: Kukhtenkov Yurii , Nazarenko Serhii
Published: December 2024

The unique impellers of high-pressure hydroturbines are large in size and mass and are manufactured as welded structures, in which the top rim, bottom rim and each blade are cast separately and then welded, or sometimes made as a single piece. Due to the operating conditions of hydroturbines, individual parts of the impeller (blades, lower rim) are made of cavitation- and corrosion-resistant chromium steels. The welded design allows for the production of combined impellers: the parts prone to cavitation are made of stainless chromium steels, the rest are made of cheap low-alloyed ones. Cracks that usually start in places of stress concentration and after brewing appear again after some time. In impellers cast as a whole, fatigue failures also occur during the operation of hydroturbines, they are caused by vibration of the unit as a result of pulsation of the pressure of the water flow, vortex formation, cavitation along with hydroabrasive wear. Fatigue cracks and fractures most often occur at the inlet and outlet edges of the blade, where dynamic loads are superimposed on the constant, maximum static load from the water pressure. The methods of combating cracking, research methods and modeling of the operational load of the blades are considered. Calculations of the fatigue strength of the working wheels made it possible to draw conclusions about their stressed state. Real-life and model experiments were conducted to determine the levels of pressure pulsation in the impellers of high-pressure radial-axial hydroturbines at a head of 300 meters. The results of these studies can be considered as initial data for their further use in calculations of the fatigue strength of the impellers of high-pressure radial-axial hydroturbines in modern 3D models.
Development of Student Worksheets Based on Engineering Design Process to Enhancing Student’s Scientific Literacy in Middle School Students
Authors: Kasah Iwang Jouvanda , Putra Pramudya Dwi Aristya , Rusdianto Rusdianto
Published: December 2024

Scientific literacy is the ability to actively participate in discussions and understanding issues related to science and scientific ideas, serving as a form of participation as an informed citizen. The objective of this research is to examine the validity, practicality, and effectiveness of a student worksheets based on the engineering design process (EDP). The research type and design fall under research and development (R&D) and have been developed using the ADDIE research design through the steps of Analyze, Design, Develop, Implement, and Evaluate. Data collection included validation and student response questionnaires, implementation sheets, and scientific literacy tests to assess validity, practicality, and effectiveness. The validation questionnaire is used to measure validity, the student response questionnaire is used to determine student responses, the implementation sheet is used to assess the feasibility of the learning process, and the science literacy test is used to assess the improvement in students' scientific literacy. The validity analysis yielded a result of 90%, categorizing the EDP-based student worksheets as very valid. The practicality score of 86% demonstrates that the worksheets are highly practical for use in learning environments. Additionally, the effectiveness, measured through an N-gain value of 0.76, indicates a significant improvement in students’ scientific literacy. The student response questionnaire results, with an 84% score, reflect a very positive reception from students. These findings collectively confirm that the EDP-based student worksheets are valid, practical, and effective tools for enhancing scientific literacy among junior high school students. These results suggest that EDP-based worksheets can be a valuable tool for fostering scientific literacy among junior high school students, equipping them with the skills to engage in scientific discussions and make informed decisions as active citizens.
Teachers' Strategies in Enhancing experience and Creating Fun Art Learning For Children Aged 3-6 years in PAUD Jabal Rahmah Yogyakarta
Authors: Aeni Khapipatul , Pamungkas Joko
Published: December 2024

The To optimize children's art development in art learning activities, teachers must have the right strategy. Therefore, it is not only the right techniques and resources that are needed to enhance children's art development. The teacher's method of preparing for learning, as well as methods, media, and other elements, greatly affect the child's learning process. The purpose of this study is to provide an explanation of the methods teachers use to make art learning fun for students in kindergarten. The research was conducted in one month, during April 2024. The location of this research was conducted in one of the PAUD in Yogyakarta, namely Jabal rahmah PAUD. This qualitative descriptive study was designed as a case study. Data collection involved observation, documentation, and interviews. Presenting data, reducing data, and drawing conclusions were part of the data analysis conducted using the Miles Huberman model. The discussion of art learning strategies in early childhood at Jabal Rahmah PAUD shows that these strategies are quite different: direct and collaborative learning strategies with group and centre models proved to be fun and improved children's art skills. based on this, children are used to working together and are confident in their respective fields. in addition, teachers use art learning as part of teaching and learning activities, while extracurricular teachers conduct art form activities such as music, fine arts and dance. This is due to the difference between classroom teachers and teachers who teach outside the classroom, who have greater professional experience gained through arts education.
The Role Of Posyandu Cadres In Empowering Communities With Infectious Diseases In Petir District
Authors: Nazareni Rindu Putri , Wahyunengsih Wahyunengsih
Published: December 2024

Indonesia ranks third out of eight countries contributing 2/3 of TB (tuberculosis) cases in the world. DHF is a disease that spreads not from one human to another, but from the Aedes Aegypti mosquito. The role of cadres in empowering the infectious disease community is urgently needed as an intermediary for sources of information from medical personnel. Cadres are not only as Posyandu or Posbindu services but cadres can also help medical personnel to turn residents into healthy communities. The purpose of this study was to find out whether Posyandu Cadres and health workers in had carried out their duties to make the community a healthy society or not, and whether they had been optimal in dealing with infectious diseases and also how the cadres worked in handling infectious diseases. The method used in this study is a qualitative method, namely by interviewing one of the cadres in the village of Rt.06 Petir and also the second method, namely by observation. The cadres have worked according to their capacity and have done well, and maybe in the future it will be even better. The results of this research have implications for policy development and implementation of dengue fever eradication programs. Apart from that, finding cadres who have carried out their duties in accordance with their capacity and standard procedures can improve cooperative relations with other related cadres and institutions.
Mendiskusikan Kembali Trickle Down Effect Sebagai Sebuah Formula Pembangunan Era Modern
Authors: Wafidhi Arif , Jaya Pajar Hatma Indra
Published: December 2024

Teori Trickle Down Effect sudah dianggap menemui kematiannya sendiri pada tahun 1970an. Anggapan ini membuat teori ini jarang digunakan lagi untuk pembangunan pada era ini. Teori ini dianggap memiliki banyak kekurangan di berbagai lini. Seperti terlalu menguntungkan pemilik modal atau negara-negara yang menjadi lokomotif. Teori ini berkembang ketika Amerika mengalami semacam kejatuhan ekonomi yang disebut sebagai the great depression. Tulisan ini bertujuan untuk mendiskusikan kembali apakah teori trickle down effect masih dipraktikan dan berdampak positif sebagi formulasi pembangunan di era modern. Metode penelitian yang digunakan adalah kualitatif dengan analisis deskriptif dengan mengambil lokasi di Ponorogo dan Madiun. Peneliti juga menambahkan studi kepustakaan untuk menambah kekayaan data guna membuktikan praktik teori trickle down effect. Hasil yang didapat adalah bahwa teori trickle down effect masih diaplikasikan untuk pembangunan di era modern. Konsep yang digunakan adalah fokus pada satu pusat pertumbuhan, invisible hand, peniruan, menghasilkan trickle down effect, dan pajak.
Inovasi Usaha Lokal: Strategi Pemberdayaan Melalui Kripik Biji Nangka Di Desa Bantaragung Majalengka
Authors: Azizah Balkis Nur , Maulidah Nurul
Published: December 2024

Kripik biji Nangka adalah inovasi produk olahan yang terbuat dari biji nangka yang diiris tipis dan dikeringkan. Proses pembuatannya melibatkan langkah-langkah khusus untuk menciptakan rasa yang unik dan tekstur yang renyah dengan menggunakan teknik rebus dalam pengolahannya. Penelitian ini bertujuan untuk memahami lebih dalam tentang potensi dan tantangan yang dihadapi oleh pelaku usaha lokal dapat menciptakan strategi yang lebih efektif untuk mendukung perkembangan ekonomi lokal yang berkelanjutan. Peneliti menggunakan pendekatan kualitatif dengan jenis penelitian deskriptif dan mendapatkan wawasan dari komunitas lokal desa Wisata Bantaragung Majalengka dengan meode survei partisipatif. Sehingga sumber data utama berasal dari observasi lapangan. Data dianalisis dengan meggunakan analisis SWOT untuk mengevaluasi kekuatan, kelemahan, peluang, dan ancaman yang dihadapi oleh usaha kripik biji nangka di desa Wisata Bantaragung Majalengka. Dari hasil penelitian yang dilakukan, peneliti dapat menyimpulkan bahwa penelitian ini memberikan pemahaman mendalam tentang potensi dan strategi pemberdayaan. Usaha ini tidak hanya menciptakan produk bernilai tinggi tetapi juga menjadi motor pertumbuhan ekonomi lokal dan pemberdayaan masyarakat. Permintaan pasar terus meningkat dengan menggunakan strategi pemasaran melalui sosial media, sehingga para pengusaha harus terus meningkatkan kapasitas produksi melalui investasi dalam mesin modern dan pelatihan tenaga kerja.
Pengenalan Budaya Moderasi Beragama pada Masyarakat Sidomulyo Kabupaten Blora guna Menjaga Ukwah Islamiyah
Authors: Setiadi Ozi , Nada Muhammad Yusrun , Dzulkarnain Mohammad Iqbal
Published: December 2024

Moderasi beragama merupakan aspek penting penting dalam pemiliharaan kerukunan antar umat beragama. Adanya moderasi beragama mampu membentuk masyarakat yang toleran. Bibit-bibit toleransi sejatinya sudah ada pada masyarakat Desa Sidomulyo. Ini perlu ditumbuhkembangkan agar moderasi beragama bisa tewujud dan terpelihara dengan baik. Pelaksanaan pengabdian kepada masyarakat (PKM) dilakukan di Desa Sidomulyo Kecamatan Banjarejo Kabupaten Blora. Metode yang digunakan dalam kegiatan PKM adalah Asset Based Community Development (ABCD). Ini dilakukan dengan beberaapa tahapan, yaitu Analisis (A), Perencanaan (B), Pelaksanaan (C), dan Evaluasi (D). PKM dilakukan dalam bentuk seminar yang dihadiri oleh 50 orang peserta, yang terdiri dari tokoh masyarakat Desa Sidomulyo, aparutur pemerintah Desa Sidomulyo, organisasi masyarakat yaitu Gerakan Pemuda (GP) Anshor, Fatayat Nahdlatul Ulama (NU), Muslimat NU, dan delegasi mahasiswa Kuliah Kerja Nyata Terintegrasi Kompetensi (KKN-IK) se-kecamatan Banjarejo. Evaluasi kegiatan dilakukan dengan memberikan penilaian terkait pelaksanaan kegiatan. Dari kegiatan PKM yang dilakukan peserta mengaku mengalami peningkatan dalam mengenal dan memahami moderasi beragama. Ini dibuktikan pula dengan evaluasi non test
Progam Entrepeneur Anak Usia Dini: Sebuah Analisis dalam Mengembangkan Sosial Anak
Authors: Ardana Fatihatus Sholihah Yesi , Latif Muhammad Abdul , Pratiwi Eriqa
Published: December 2024

This study aims to analyze the impact of entrepreneurship activities based on the market day program in developing social skills in early childhood at TK Muslimat NU Darunnajah Kamal Bangkalan. The research adopts a qualitative approach, with data collection through observation, interviews, and documentation at the school. The data sources include literature as well as field data, which involve the school principal, teachers, and the children. Data analysis is conducted using the model developed by Miles and Huberman. The findings indicate that the market day program has a positive impact on developing children's social skills. Interactions between children and buyers or peers, such as negotiating, sharing, and resolving conflicts, enrich their social experiences. These activities help children develop important social skills, including empathy, communication, and teamwork. Additionally, the program promotes improvements in self-confidence, as children gain a sense of achievement through their involvement in entrepreneurial activities. By taking on tasks such as selling and managing products, they learn to interact effectively with others. Moreover, the market day program introduces basic entrepreneurial concepts to children. These concepts teach values such as hard work, responsibility, and appreciation for others' efforts. Children begin to understand the importance of working together to achieve goals and the rewards that come from collaboration and perseverance. This study contributes empirical evidence on the positive effects of the market day program in fostering social skills in young children. The findings can serve as a valuable reference for early childhood education institutions in designing programs that promote both social and emotional development. Additionally, the research highlights the potential of incorporating entrepreneurship education into early childhood curricula, offering an innovative approach to enriching teaching methods and preparing children for future challenges.
RISK ANALYSIS OF PRODUCTION MACHINERY MAINTENANCE AT PT. XYZ USES FUZZY FAILURE MODE AND EFFECT ANALYSIS METHOD: CASE STUDY IN AMDK INDUSTRY
Authors: Hermawan Dendi , Ginantaka Aditia , Syarbaini Ahmad
Published: December 2024

Penelitian ini difokuskan pada peningkatan kinerja mesin produksi di PT XYZ, khususnya mesin blowing yang digunakan untuk membuat kemasan botol galon air minum dalam kemasan ukuran 15 liter. Mesin ini mengalami kendala pemeliharaan, terutama pada komponen penutup moulding yang tidak tertutup sempurna sehingga memicu alarm locking mold dan downtime yang signifikan. Penelitian menggunakan metode Six Big Losses dan diagram fishbone untuk mengidentifikasi kemungkinan penyebab downtime pada mesin. Selain itu, metode F-FMEA membantu menilai risiko kemungkinan terjadinya downtime. Mesin blowing mengalami unplanned downtime dengan total 2323 menit, dengan rata-rata 74,94 menit. Alarm locking mold menjadi penyebab utama downtime, menyebabkan losses time sebesar 1611 menit. Hasil perhitungan F-FMEA mendapatkan nilai FRPN dari faktor penyebab alarm locking mold, dengan hasil Pin mold kering/seret memperoleh nilai FRPN 900 di rank 1, Small shaft tidak release memperoleh nilai FRPN 700 di rank 2, Baut as pin mold kendur memperoleh nilai FRPN 333.33 di rank 3. Kurang pelatihan mesin blowing di memperoleh nilai FRPN 208.33 di rank 4 Rekomendasi perbaikan melibatkan pelatihan operasional, pergantian material small shaft dari VCN-150 ke SKD-11, peningkatan pemeliharaan baut as pin, dan pemberian lubrikasi secara rutin.
Kata kunci: Overall Equipment Effectiveness, F-FMEA, Diagram Fishbone
ENHANCING NUTRITIONAL VALUE: IRON –RICH CHIPS WITH MORINGA, MOCAF and MILKFISH FOR ANEMIA PREVENTION
Authors: Prayitno Sutrisno Adi , Ningrum Sugiyati , Putri Silvy Novita Antrisna
Published: December 2024

The study aimed to produce functional food products in the form of chips with sufficient iron (Fe) content and macronutrient content (carbohydrate, fat and protein content) which has the potential to prevent anaemia for girl’s teenager. This research used a Completely Randomized Design (CRD) method with three replications with several treatments including P1 as control (without moringa and milkfish, 100% wheat); P2 (1% moringa, 20% mocaf, 79% milkfish); P3 (3% moringa, 20% mocaf, 77% milkfish); and P4 (5% moringa, 20% mocaf, 75% milkfish). The resulting product was analyzed for iron (Fe) and macronutrient content such as carbohydrates, fat and protein. The data obtained was analyzed using SPSS for Windows version 25 software using a confidence level of 95% (α<5%) followed by a different test using DMRT (Duncan multiple range test). The results of ANOVA showed that a sig value <5% (0.000<0.05), showed that the substitute materials used have an influence on the levels of iron, protein, fat and carbohydrates. The iron in the product makes it possible to stimulate the prevention of anaemia in girl’s teenager. Besides, it was also supported by the presence of protein compounds on the substituted chips. The highest Fe value was 5.75 ppm, protein was 13.21%, fat was 5.21% and carbohydrates were 78.24%. Based on these parameters, P4 was the form of treatment that provides the best results, namely with a formulation of 5 grams of moringa, 20 grams of mocaf, and 75 grams of milkfish.
Keywords: Chip; Substitute products; Anaemia, Food Product
PLANNING THE NEEDS OF JACKFRUIT CHIPS USING THE MATERIAL REQUIREMENT PLANNING (MRP) METHOD AT CV PURI PANGAN LESTARI MALANG CITY
Authors: Agata Dyan Fransiska , Winarno Sri Tjondro , Indah Pawana Nur
Published: December 2024

CV Puri Pangan Lestari tidak memproduksi keripik buah nangka saat tidak musim panen. Ketidakstabilan ataupun ketidaktersediaan buah nangka disebabkan oleh kuantitas pemesanan yang kurang pada saat tidak masa panen karena perusahaan hanya memiliki 1 supplier bahan baku. Perlu adanya perencanaan bahan baku keripik buah nangka di CV Puri Pangan Lestari. Penelitian ini bertujuan untuk menganalisis perencanaan bahan keripik buah nangka di CV Puri Pangan Lestari Kota Malang. Metode perencanaan bahan menggunakan metode Material Requirement Planning (MRP) dengan teknik lot sizing LFL, EOQ,dan POQ. Hasil penelitian menunjukkan bahwa CV Puri Pangan Lestari dapat melakukan perencanaan bahan baku keripik nangka menggunakan perhitungan MRP metode LFL karena biaya persediaan lebih kecil dibandingkan dengan metode EOQ dan POQ. Perhitungan total persediaan dengan metode LFL pada bahan keripik buah nangka di CV Puri Pangan Lestari sebesar Rp.17.850.000.
Kata kunci: Economic Order Quantity (EOQ), Keripik Nangka, Lot for Lot (LFL); Material Requirement Planning, Period Order Quantity (POQ)
OPTIMIZATION OF MARKETING MIX TO INCREASE THE COMPETITIVENESS OF SAVIRA FROZEN FOOD IN THE LOCAL MARKET
Authors: Nurfadila Agustin Rani , Rahmawan Arief , Negara Palmadi Putri Surya , Wahyudi Bayu , Ardani Much Taufik
Published: December 2024

Makanan beku adalah produk yang dibekukan untuk memperpanjang masa simpan. Saat ini, produk ini diminati banyak masyarakat. Penelitian ini bertujuan untuk mengidentifikasi bauran pemasaran Savira Frozen Food dan menganalisis faktor internal serta eksternal dalam strategi pengembangan usahanya. Metode yang digunakan yaitu survei kualitatif dan wawancara secara langsung dengan pemilik usaha untuk mendapatkan data kualitatif pada usaha dan dianalisis menggunakan SWOT. Berdasarkan hasil penelitian dapat disimpulkan bahwa bauran pemasaran 4P yang diterapkan oleh UMKM Savira Frozen Food Ponorogo seperti (a) produk yang dihasilkan berkualitas baik, (b) harga ditentukan oleh harga pesaing, (c) berlokasi di tempat strategis, dan (d) promosi yang telah diterapkan oleh UMKM Savira Frozen Food Ponorogo dilakukan dengan penjualan tatap muka dan penjualan perseorangan. Strategi pengembangan usaha ini yaitu pertama, mempertahankan varian dan kualitas produk sehingga konsumen lebih tertarik dengan produk yang dihasilkan; kedua, perubahan pola konsumsi masyarakat merupakan peluang yang harus dimanfaatkan; ketiga, memanfaatkan tempat pendingin sehingga dapat memenuhi keinginan konsumen; keempat, menambah jumlah karyawan dan membuat catatan keuangan dan adanya bahan baku yang mudah didapat sehingga produksi berjalan dengan lancar; kelima, menambah inovasi produk sehingga dapat mempertahankan daya saingnya di pasar dan konsumen leluasa dalam memilih produk; dan keenam, memperbanyak advertising dengan menggunakan social media sehingga dapat mempertahankan daya saingnya di pasar.
Kata kunci: makanan beku; bauran pemasaran; SWOT.
OPTIMIZATION OF TEMPERATURE AND DRYING TIME OF DRAGON FRUIT PEEL POWDER USING RESPONSE SURFACE METHODOLOGY
Authors: Setiawan Andika Putra , Wardhana Danu Indra , Indrian Oppy Valencia
Published: December 2024

Komoditas hortikultura seperti buah naga bernilai ekonomi dengan prospek budidaya yang baik di Indonesia menjadi salah satu yang direkomendasikan banyak orang karena mengandung banyak vitamin. Kulit buah naga banyak manfaatnya yang belum di optimalkan. Upaya penanganan pascapanen perlu dilakukan untuk memperpanjang umur simpan kulit buah naga karena masuk dalam kategori limbah sehingga jarang dimanfaatkan, sebuah perlakuan meminimalisir kadar air yakni pengeringan yang mampu membuat umur simpan suatu produk lebih lama. Penelitian ini bertujuan mengetahui titik optimasi pengaruh suhu dan waktu proses pengeringan terhadap rendemen, kadar air, warna serta organoleptik dari bubuk kulit buah naga. Analisis dengan Response Surfase Methodology (RSM) pada suhu 60℃, 70℃ dan 80℃ dengan lama waktu 5-7 jam. Pada penelitian ini dihasilkan suhu optimal pengeringan serbuk kulit buah naga sebesar 79,47℃, Rendemen 16.094%, kadar air 4,63%, uji warna kecerahan 65,6 dan hasil uji organoleptik berpengaruh terhadap warna dan aroma serbuk.
Kata kunci: Kulit Buah naga, Pengeringan, Serbuk, RSM
The Evolution of the Design, Evaluation, Implementation and Monitoring of Standalone Screens
Authors: Gaviria Fernando , Eto Kome , Zhu Da , Mahmoudi Mahdi , Roostaei Morteza
Published: December 2024

This paper aims to comprehensively introduce the historical, present, and future landscape of standalone screens’ design, and evaluation. The evolution of sand control screen design, testing, and implementation is explored, with a focus on its role in overcoming the challenges posed by heterogeneous geological formations and complex EOR strategies. Field case data will be used to illuminate the need for a more scientific approach to sand control engineering.

As operators venture into increasingly complex and heterogeneous formations, precise sand control engineering becomes imperative. This paper will delve into the historical standalone screen design, highlighting its advantages and drawbacks. Through field case examples, we will underscore the necessity for a more scientific approach. A comprehensive sand control design cycle—from information acquisition and lab testing to data analytics, manufacturing, field installation, monitoring, and post-performance analysis—will be elucidated.

Since 2017, the first attempt to optimize the standalone screen design has led to the development of a sand control best practice. The best practice outlines the guidelines and steps that must be followed on the sand control design, evaluation, and monitoring for future pads. The guidelines have been successfully implemented in the field with remarkable success and no failure to report to date. The guidelines specify the sampling method, the testing requirement to identify the sand variation within the studied sandbox, and selection criteria and evaluation testing through sand retention testing. The guidelines specify the manufacturing tolerances for each screen type. Additionally, the monitoring details for wells completed with sand control and adjustment of the best practices based on the monitoring data are outlined in the guidelines. This paper shares the rich history and lessons learned from sand control design from two fields where different standalone screens are used as the primary completion method.

Designing and optimizing the sand control screens for wells is a formidable challenge, given the intricate nature of downhole environments. This paper conveys lessons and learns from field case studies to the industry, shedding light on the complexities and offering guidance for future sand screen engineering. The insights shared aim to contribute to the continuous improvement and advancement of sand control practices in the global hydrocarbon recovery sector.
Lower Carbon Footprint Production in SAGD Late Life Recovery
Authors: Ismail I. Mohd , Guilfoyle P. , Gisholt E. , Molina J. L.
Published: December 2024

The world needs reliable energy. As an industry, we supply that energy. Moreover, our product is one of the major contributors to increasing atmospheric CO2. Steam assisted Gravity Drainage (SAGD) technique alone contributes nearly 1.4 million barrels per day of oil production but with a range of steam oil ratios, the effectiveness of this production method is often challenged and seen as having high associated GHG emissions per barrel.

We cannot solve this dilemma, but by better understanding the sciences of the reservoir and implementing new technologies at the primary level of production, we can help to be part of the solution. One production enhancement technique, injecting NCG at the late life SAGD wind down process is an effective but challenging operation due to high mobility of the gas and subsequent breakthrough at the production well. A new design of Autonomous inflow control valve's (AICV) can distinguish the difference in viscosity of the fluid, and therefore they can strongly choke and shut the NCG effluents zones as breakthrough occurs in the SAGD production well.

The AICV design is truly autonomous based on Hagen-Poiseuille equation and Bernoulli's principle. The AICV is utilizing the difference in flow behavior in a laminar flow restrictor and a turbulent flow restrictor to differentiate fluids based on the difference in pressure drop between oil, water, emulsions, gas, CO2 and steam. This will allow the AICV to choke and/or shut off unwanted water, gas, CO2 and steam coming into the producer well. To understand the AICV behavior for a NCG breakthrough application, a laboratory experiment which illustrate the performance of AICV technology and reference orifice type ICD technology have been conducted.

Laboratory experiment results illustrate the performance difference between AICV technology and reference orifice type ICD technology illustrate a significant, of more than 80% reduction, in NCG choking performance, when compared to the ICD type nozzle. The laboratory test performance results are used in reservoir simulations. Reservoir simulation results show that utilizing AICV in late life SAGD production well can significantly reduce NCG production and improve the recovery of SAGD operation by retaining more of the injected gas within the reservoir.

In today's engineer's toolbox, a variety of new technologies exist that can help achieve the targets for late life SAGD. The new editions to Flow Control Device (FCD), Autonomous Inflow Control Valve (AICV), has evolved to the point that operators can operate in late life in a way that could demonstrate clear economic efficiencies with a reduced environmental impact. Reducing NCG breakthrough, greatly improves the economics and reduce greenhouse gas emissions for each barrel of oil produced thus reducing the carbon footprint and the impact to late life SAGD operation.
Improving ESP reliability in Direct-To-SAGD completions: A Case Study
Authors: Joseph Rejish , Belyaev Sergey , Eto Kome
Published: December 2024

One of the methods to establish continuous emulsion production between producer and injector wells in a steam-assisted gravity drainage (SAGD) scheme, is steaming the well-pair simultaneously. As for the producer wellbore, a typical completion implies a two-stage workover with installation of the Electric Submersible Pump (ESP) and instrumentation right after the completion of the steaming phase. A novel method of a single stage workover - going direct to SAGD with steaming past the ESP's was trialed at Suncor Energy's Firebag field in Northern Alberta. The first full direct-to-SAGD (D-SAGD) Firebag pad faced multiple challenges during steaming phase and production startup. One of them was long-term exposure of the ESP systems to the high temperature steam along with challenging temperature cycling during the fall-off tests that contributed to early failures in the power delivery system. Continued D-SAGD implementation needed a system that is capable of withstanding high-temperature steam exposure for several months along with multiple temperature cycles. After thorough engineering analysis of failure modes, a plan was established to deliver a new, redesigned system. Multiple new concepts have been developed for mechanisms and materials with the criteria to meet the reliability requirements and were successfully qualified after being subjected to extensive testing. As a result, an ESP system specific to D-SAGD style of completion was developed, deployed, and successfully started. New design has contributed to positive economic and environmental effects at both Firebag and MacKay River projects.