bluuebunny/crossref_metadata_2025 huggingface dataset:
Tomato Pomace Ketchup: Physicochemical, Microbiological, and Sensory Characteristics
Authors: Heriyanto Stefanny , Romulo Andreas
Published: December 2023

Tomato (Solanum lycopersicum L.) is one of the most important crops that is extensively used in the food processing industry. During tomato processing, abundant by-products such as skins, pulps, seeds, and waste are generated and cause environmental burdens. To solve this problem, tomato pomace was subsequently used as a material for making tomato sauce. However, it is essential that the production of tomato ketchup meets the required standards. Therefore, it is important to analyze the physicochemical and sensory characteristics of the product. We aimed to study the effect of corn starch addition on the physicochemical and sensory properties of tomato ketchup made from tomato waste and to assess the acceptability of tomato sauce formulated with different concentrations of corn starch.

Tomato ketchup was cooked at 90°C for 15 min and then hot-filled into a sterile glass bottle. It was then analyzed for physical properties (color, viscosity, and total dissolved solids), chemical properties (pH, titratable acidity, moisture content), microbiological quality (total bacteria, mold, and yeast), and sensory acceptance.

The results showed that corn starch influenced the color characteristics of the tomato sauce. Adding more than 4% of corn starch increased the viscosity and total solids content significantly (p < 0.05). Also, corn starch addition decreased the water content and acidity, as well as increased the pH of the tomato sauce. Microbiological analysis showed no growth of bacteria, mold, or yeast in any of the test samples. According to sensory analysis, the tomato sauce with 1% of corn starch had the highest acceptance, while higher concentrations of corn starch decreased the texture acceptance.

Our findings may indicate that, with proper formulation, tomato by-products can be used as raw materials to develop sustainable alternative value-added products that consumers accept organoleptically. Further investigations can be conducted in the pilot-scale studies to enhance the feasibility of tomato pomace ketchup as a commercial product.
Electrochemical Sensors Based on Single-Wall Carbon Nanotubes in Voltammetric Ascorbic Acid Tests
Authors: Ivanova Natalia , Martynova Elizaveta , Vershinina Anna , Lomakin Maksim , Eremeeva Galina , Gordaya Olesya , Shandakov Sergey
Published: December 2023

Modern highly sensitive and selective sensors are able to determine biologically active substances, which makes this direction one of the most popular areas of analytical chemistry. The study featured the electrochemical properties of new fiber materials based on single-wall carbon nanotubes with prospects of using them in the voltammetry of ascorbic acid.

The authors developed a new technology to synthesize films from disordered single-wall carbon nanotubes by chemical vapor deposition. Fibers were produced from a solvent by wet-pulling of single-wall carbon nanotubes networks. Thin films of randomly oriented single-wall carbon nanotube bundles were deposited downstream of a floating aerosol CVD reactor, which included a high temperature furnace with a quartz tube. The synthesis of the single-wall carbon nanotube samples was performed at 825°C. Ethanol served as carbon source while ferrocene was used as catalyst precursor. The single-wall carbon nanotubes were collected on a nitrocellulose filter in the form of films with transmittances of 10% in the middle of the visible wavelength (550 nm). The method was optimized to involve air annealing at 300–320°C and a treatment with strong inorganic acids, i.e., HCl, HNO3 + H2SO4. The voltammetric curves recording included background electrolyte, scan rate, and preconditioning. These parameters were selected experimentally to obtain the maximal sensor response to ascorbic acid content. The anodic peak of ascorbic acid in the phosphate buffer electrolyte (pH 6.86) was observed at a potential of +0.2 V. The current and peak area of ascorbic acid oxidation depended neither on the time nor on the conditioning potential of the sensor. The linear dependences of these parameters on the concentration of ascorbic acid stayed within 50–500 μmol/L (8.8–90 mg/L) at a scan rate of 0.1 mV/s. The single-wall carbon nanotube microsensor had a length of 0.5 cm and an average width of 400 μm. Its sensitivity was two times as high as that of a disk glassy carbon electrode with a diameter of 5 mm.

The experimental sensors proved effective in determining ascorbic acid in food products, pharmaceuticals, and biological fluids.
Cobalt-Intercalated Birnessite-Type Manganese Oxide Catalysts for Low-Cost Cathodes in Microbial Fuel Cells
Authors: Hirose Soichiro , Takasugi Kosuke , Nakamoto Trang , Taguchi Kozo
Published: December 2023

Microbial fuel cells (MFCs) are a promising technology for solving energy and water pollution problems. However, to promote the practical application of MFC, it is necessary to solve the problems of power output and electrode cost simultaneously. Therefore, transition metal-based catalysts that can improve air cathode functionality without using platinum catalysts, which are commonly used, are attracting attention. In this experiment, a cobalt-intercalated birnessite-type manganese oxide catalyst was used as the cathode of the MFC. In addition, rice husk charcoal from agricultural waste and Sumi ink were used as cathode materials to reduce cost and improve the physical stability of the electrodes. The conductivity of the Sumi ink is expected to compensate for the low conductivity of manganese oxide. The resulting power density was 5.8 times higher with the catalyst than without. It was also confirmed that the fabricated cathode operated for at least 90 days without maintenance.
Editorial Introduction: Poetics of Self-construal in Postcolonial Literature
Authors:   Alba Iulia University, Romania, Tupan Maria-Ana
Published: December 2023

How man is made and how he makes himself was at the crux of the anthropological inquiry launched by Immanuel Kant in his 1798 Anthropology from a Pragmatic Point of View. The subsequent story of the discipline, progressively aided by others, both from the field of humanities (philosophy, sociology, psychology, ethnography) and of sciences (biology, physics, physiology, psychiatry), followed one or the other paths opened by the Königsberg philosopher. The self grounded in physiology is considered by Kant egoistic, self-centred and motivated by irrational drives: involuntary perception, subconscious associations, arbitrary taste or unaccountable desires. On the contrary, the pragmatic self is historically and culturally generated in an individual who has a motivation and a purpose in his effort to civilize himself, living in the spirit of law and morality. As values transcend the empirical self and are shared in common with peers, these constitutive states and activities of the psyche point to the existence of a common human nature which, however, changes across time and space.
Poetics of Self in Adichie’s Purple Hibiscus: A Postcolonial Bildungsroman Study
Authors:   Department of English & MELs, Banasthali Vidyapith, Rajasthan, India, Seoda Nitisha , Sharma Devendra Kumar
Published: December 2023

This study situates itself in the literary representations of the interplay of gender, class, color, race, postcoloniality, power politics, violence, identity, and the African self in a Bildungsroman. It focuses on Chimamanda Ngozi Adichie’s Purple Hibiscus as a Bildungsroman of woman, written from a postcolonial outlook. The narrative centers on the growth, development, and experiences of the female Bildungsheld, Kambili, who eventually attains epiphany, and explores her true self and identity. In other words, the study follows an eclectic approach, which further focuses on Kambili’s odyssey of encountering freedom by tearing out the different challenges, and insecurities during the process of subjectivization, objectification, and interpellation towards her journey of becoming in a political context of a military coup in Nigeria. As a result, the article emphasizes the confluence of history and literature, as well as Africans’ experiences in the postcolonial world in general, and accounts for Kambili’s becoming in particular.
Postcolonial Trauma in the Lives of Indian Tribes
Authors:   B. S. Abdur Rahman Crescent Institute of Science & Technology, Chennai, Tamil Nadu, India, Zainab Nihal , Sofia H.
Published: December 2023

India is a country that is home to 1.4 billion people. These people are part of wide and intricate groups, communities, castes and tribes. While close to 91.4% of the Indian population has progressed into the colonial standard of civilization, according to the Census Report 2011, about 8.6% of people are still living in their original and natural way of life. These people are the tribes of India whose way of life has been romanticized as the ‘Indian Culture’. A section of tribal people continues to live in mountains, and forests and construct only mud houses or huts. They have little access to basic amenities like healthcare, education, electricity and water. While few tribes have moved out of their original ways of life by converting to other religions, certain tribes are still governed by their respective leaders, following the religions and customs that were taught to them centuries ago. It is at times difficult for the State Governments to reach the tribes since most of them resist any such advancements. European Colonization of India led to the discovery of several tribes that were until that point in time living in harmony with nature and forests. This paper will analyze through literature the pre-colonial and post-colonial lives of certain Indian tribes living in the mountains of Kerala and Tamil Nadu.
The Narrative Construction of National Identity in Nadine Gordimer’s July’s People
Authors:   Department of English: Assam Don Bosco University, Assam., Hazarika Aparajita Dutta , Devi Smita
Published: December 2023

At a time when Gordimer was writing her short stories and novels which stretched over four decades beginning from the 1940s to the 1990s, several historical and political events were taking place in South Africa. Gordimer’s entire oeuvre of fiction was her way of responding to those historical and political events that unfolded in the country. Many writers and critics believed that the history of the Nationalist Government from 1948 onwards has been faithfully recorded by the novels of Nadine Gordimer and they “will provide the future historian with all the evidence required to evaluate the price that has been paid by the people”. (Green, 563) She published her first collection of short stories in 1949, a year after the first Nationalist Government was elected to power. Her body of work from 1949 to 2000 covers the entire period of apartheid in South Africa. Therefore, she was a writer with serious intent and meant to convey through her novels her rigid stand against apartheid. The term ‘apartheid’ means ‘apartness’, a policy meant to segregate people on the foundation of their race and colour. In The Essential Gesture: Writing, Politics and Places (1988), Gordimer noted that it was not the “problems” of her country that set her to writing; rather, it was learning to write that sent her “falling, falling through the surface of the South African way of life”. (Gordimer 1988, p. 272) This paper shall attempt to study how Gordimer constructs identity in her novel July’s People (1981). The paper posits that the most important theme in Gordimer’s novels has been identity, an issue that she has been dealing with since her childhood, due to her situation as the daughter of immigrant parents, and living and writing in South Africa at a time when her country was divided based on colour.
Victimhood Self-construal, Irony of Tears and Melancholy amid Wealth: Critical Assessment of Select Literary and Visual Metaphors on the Niger Delta Environmental Despoilment
Authors:   Fine & Applied Arts, University of Nigeria, Igwenagu Thank-God I. , Ugwu Alphonsus C. ,   University of Nigeria, Eze Norbert O. ,   Theatre & Film Studies, University of Nigeria, Aniago Emeka ,   Theatre & Film Studies, University of Nigeria.
Published: December 2023

Studies on self-construal indicate that man is propelled by what happens around him to react in a certain manner and this reaction, we suggest is a human universal common and a representation of conscious purposive response to concomitant environmental and circumstantial realities. This purposive response encapsulates messages, which an observer articulates and interprets; hence, our study is about deepening our understanding of the factors and variables responsible for victimhood self-construal projected in select texts on the Niger Delta environmental despoilment. Drawing from the theories of eco-criticism, victimhood, and self-construal, this study utilizes an interpretive approach to discuss select instances of victimhood portrayals in the poem ‘Delta Blues’ by Tanure Ojaide, in the drama Hangmen also Die by Esiaba Irobi and in the film Blood and Oil, directed by Curtis Graham. The study examines the primary reason, which is the dispossession of livelihood by environmentally destructive oil exploitation, adduced by the Niger Delta inhabitants to understand how it generates variables that instigate victimhood self-construal. Our observation is that in the texts the inhabitants’ victimhood self-construal can be described as purposive, the propelling variable is their concomitant environmental realities and the texts as communication media have different encumbrances and advantages regarding their efficacy and utility for advocacy.
Compatibility of essential oils with Beauveria bassiana (Balls.) Vuil
Authors: Da Silva Carvalho Robson , Silvestre Wendel Paulo , Fernandes Pauletti Gabriel , Bonatto Vicenço Camila
Published: December 2023

Insect pests are a primary agricultural concern, as they can cause productivity losses. The use of pesticides has been the main means of controlling pests. Despite its significant contribution to agriculture, its indiscriminate use harms the environment. The awareness about the risks of agrochemicals using natural enemies such as fungi and alternative controls, such as essential oils, can be an alternative control. The objective of this work was to evaluate the fungicidal activity of oils essentials of Cymbopogon citratus, Cinnamomum camphora var. linaloolifera, and Thymus vulgaris on the entomopathogen Beauveria bassiana. Bioassays followed a completely randomized design in a 3x6 factorial scheme, in which one factor was the essential oils of C. camphora, C. citratus, and T. vulgaris, and the other factor was the four essential oil concentrations, plus two controls. The evaluations took place on the 3rd, 7th, and 14th day. Each treatment had five repetitions, and each repetition was a plate. When assessing compatibility with the entomopathogenic fungus, it was verified that the essential oils showed antifungal activity at all concentrations tested for that non-target organism. Thus, it is advised against the concomitant use of this entomopathogen and the tested essential oils. However, both control tools can be used at different times, with rotation and intercalation of the two methods, following the IPM practices.
Developments in Emerging Topical Drug Delivery Systems for Ocular
Disorders
Authors: Mandal Suraj , Vishvakarma Prabhakar , Bhumika Km.
Published: December 2023

According to the current information, using nano gels in the eyes have therapeutic
benefits. Industry growth in the pharmaceutical and healthcare sectors has been filled by nanotechnology.
Traditional ocular preparations have a short retention duration and restricted drug
bioavailability because of the eye's architectural and physiological barriers, a big issue for physicians,
patients, and chemists. In contrast, nano gels can encapsulate drugs within threedimensional
cross-linked polymeric networks. Because of their distinctive structural designs
and preparation methods, they can deliver loaded medications in a controlled and sustained
manner, enhancing patient compliance and therapeutic efficacy. Due to their excellent drugloading
capacity and biocompatibility, nano-gels outperform other nano-carriers. This study
focuses on using nano gels to treat eye diseases and provides a brief overview of their creation
and response to stimuli. Our understanding of topical drug administration will be advanced using
nano gel developments to treat common ocular diseases such as glaucoma, cataracts, dry
eye syndrome, bacterial keratitis, and linked medication-loaded contact lenses and natural active
ingredients.
Tuning Microstructural Attributes of Spinel Cobalt Ferrite (CoFe2O4)
Nanoparticles through Annealing Temperature
Authors: Naagar Manish , Chalia Sonia , Thakur Preeti , Thakur Atul
Published: December 2023

Background:

The study systematically investigates the influence of annealing temperatures, ranging from 500°C to 900°C with 100°C increments, on the
microstructural characteristics of cobalt ferrite (CoFe2O4) nanoparticles.

Methods:

The nanoparticles, with sizes between 7-18 nm, were synthesized using the
co-precipitation method. X-ray diffraction (XRD) analysis reveals that higher annealing temperatures correspond to noticeable increases in crystallite size, lattice parameter, unit cell volume, and interatomic distances within both octahedral and tetrahedral
sites. Concurrently, a substantial decrease is observed in the average theoretical X-ray
density, dislocation density, and microstructural strain. This investigation elucidates
the underlying physical and chemical processes driving these transformations. To explore and quantify the intricate relationships between annealing temperature and various microstructural attributes of CoFe2O4 nanoparticles, Pearson’s correlation coefficient (r) serves as a robust statistical tool. The study establishes significant associations and elucidates the strength and direction of these correlations.

Results:

Regression analysis yields highly robust correlations (Adjusted R-Squared >
0.99) between microstructural features and annealing temperature. These correlations
provide valuable predictive insights into microstructural characteristics, offering substantial support for optimizing CoFe2O4 nanoparticle applications across a temperature range spanning from 500°C to 900°C.

Conclusion:

This research contributes to the scientific understanding of materials engineering and offers practical guidance for applications requiring precise control over
nanoparticle properties.
Anaerobic Biodegradability and Biomethanation Potential of Fruit-Vegetable Wastes at Sindh, Pakistan
Authors:   Institute of Environmental Engineering and Management, Mehran UET, Jamshoro, Sindh, Pakistan, Korai Muhammad Safar , Noonari Altaf Alam , Ali Munawar , Rabab Nida , Rasheed Rizwan , Solangi Zulfiquar Ali , Bhatti Zulfiquar Ali
Published: December 2023

The urban environment of every city of Pakistan has been degraded because of open dumping and burning of organic wastes along with other wastes. The focus of this study was to evaluate the fruit and vegetable wastes for methane generation through biomethanation process. After collection, various parameters such as alkalinity, volatile fatty acids, pH, lignin content, moisture content, total solids, volatile solids, fixed carbon, and elements (C, H, N, O, S) of waste samples were determined by using standard methodology. Anaerobic biodegradability of fruit and vegetable wastes was observed from 54 to 77% and from 59 to 87% along with their methane generation potential in the range of 258-367 NmL /gmVS and 274-407 NmL/gmVS, respectively. Further, the effect of feedstock to inoculum ratio was studied. The result of that showed that lower methane potential at a higher ratio and vice versa was observed. It was concluded that at a lower feedstock to inoculum ratio, fruit as well as vegetable wastes become more feasible for the biomethanation process. The study recommends that the conversion of fruit and vegetable wastes into methane gas by anaerobic digestion plays a significant role to save urban environment of the country.
Photocatalytic activity of Ag/TiO2 composite synthesized using aqueous plant extract from Mirabilis jalapa for degradation of rhodamine B under visible light
Authors:   Department of Pharmacy, STIKes Prima Indonesia, Bekasi, Indonesia, Alam Tunas , Purnomo Frida Octavia , Madiabu Muhammad Jihad , Annas Dicky , Tanfil Ardy T.
Published: December 2023

In this study, Ag/TiO2 were synthesized by green synthesis approach route using aqueous plant extract from Mirabilis jalapa. Ag/TiO2 were characterized by FTIR, UV-Vis, SEM and XRD. Analysis by UV-Vis showed an SPR band at 461 nm and there was confirmed AgNPs were formed. XRD analysis exhibited characteristic pattern of anatase phase of TiO2 and present of silver. SEM images indicated a cuboid shape and irregular shape for Ag and TiO2, respectively. The photocatalytic activity of Ag/TiO2 was investigated through degradation of rhodamine B under visible light illumination with different amount of silver which labelled as PT (pure TiO2), Ag1T, Ag2T, Ag3T, and Ag4T. The results is Ag2T had the most catalytic activity than other catalyst with 240 minutes of reaction time.
Improved Spectrophotometric Estimation of Nimodipine in the Pharmaceutical Formulation and Biological Fluids
Authors:   Chemistry Department, Science College, Mosul University, Mosul-Iraq, Ahmed Hanan H. , Mohammed Salim A.
Published: December 2023

Nimodipine (NDP) belongs to the class of pharmacological agents known as calcium channel blockers. It is used to treat symptoms resulting from a ruptured blood vessel in the brain (hemorrhage). NDP increases blood flow to injured brain tissues. For its clinical importance, a sensitive, accurate and simple spectrophotometric approach for the evaluation of NDP in bulk, tablet and biological fluids has been developed. The procedure involves the reaction of the reduced NDP with equimolar nitrous acid then followed by coupling with the available γ-resorsolic acid reagent in a basic solution to give a colored azo dye. The resulting azo dye is soluble in water and shows a maximum absorption peak at 436 nm. All the variables which affect the conditions such as the influence of acid, γ-resorsolic acid and alkali concentrations, reaction time and Beer׳s law limits were studied carefully and adjusted. The optimal conditions showed the color of azo-dye was stable for more than 1 h. The method was found linear in the range from 1.0 to 40 μg/mL with a good value of determination coefficient (R2= 0.9988). The molar absorptivity was calculated and set up to be 1.8495x104 L/mol.cm. The detection limits and quantitation limits were also estimated and found to be 0.0059 and 0.0195 μg/mL, correspondingly. The approach was established by estimating NDP in pharmaceutical tablets and biological fluids. The precision (RSD) was calculated to be better than 0.324%, whereas the values of recovery percent and relative errors were in the range of 97.95% to 99.08 % and -3.78% to 2.22%, respectively, without interfering from any common excipients present in the samples. The nature of the yellow dye has been studied between diazotized NDP and γ-resorsolic acid reagent and was equal to 1:1.
Measurement of Acefylline Piperazine Interaction and Dissociation Constants in Polymer Solvent Systems
Authors:   Department of Chemistry, University of Karachi, Karachi-75270, Pakistan, Masood Summyia , Rehman Warda , Naseem Huma , Tauseef Saima , Qamar Noshab , Shafi Nighat
Published: December 2023

In this study the physicochemical interactions of acefylline piperazine drug (APD) were examined in aqueous and aqueous polymer systems viz., aqueous polyethylene glycol (1.0 %w/v) and aqueous polyvinyl pyrrolidone (1.0% w/v). The study was carried within the concentration ranges from 2.0×10-2 to 10.0 ×10-2 mol/dm3 at different temperatures (293.15 to 318.15 K with the difference of 5 K). Various analytical methods such as conductometric, refractometry, and liquid chromatographic (RP-HPLC) were applied. In order to observe the interaction of APD, o m was calculated to evaluate the structural influence of polymers on the mobility of solute (APD) at different temperatures. α, Kd and Walden product of APD were also assessed in aqueous polyethylene glycol and aqueous polyvinyl pyrrolidone. Solvation was observed by Walden's product showing strong solvation of APD in water-soluble polymer systems. Thermodynamic parameters for APD such as * E , ΔG*, ΔH*and ΔS* have also been evaluated as a function of temperature to determine the exo/endothermic nature of the drug dissociation process. Specific refraction, molar refraction and polarizability of APD in aqueous and aqueous polymer systems were calculated using the Lorentz-Lorentz equation and various interactions were interpreted. Drug's compatibility studies were also performed by HPLC in aqueous and aqueous polymer systems.
PEMODELAN SISTEM DINAMIK DAN IMPLEMENTASI SIMULINK PENGENDALIAN KESTABILAN UNMANNED AERIAL VEHICLE MULTIROTOR HEXACOPTER CARGO
Authors: Soputra Steven Wiliam , Tobing Sheila , Rawikara Seno Sahisnu
Published: December 2023

The rapid growth of Unmanned Aerial Vehicle (UAV) technology, or drone, has shown its popularity and has been significantly applied to various purposes today. Nevertheless, with all the sophistication of drones, many related topics are still attractive, especially when a drone is designed to carry out a cargo mission. Thus, in this research, the dynamic model of a Hexacopter drone to deliver goods belongs to PT Aero Terra Scan is being developed. This dynamic modeling aims to further the drone's development by modeling it in 2 cases: no-payload and with a payload of 5 kg cases. The dynamic model of this Hexacopter is based on flight dynamics, a field of science studied in Aeronautical Engineering, and is implemented using Simulink. Through the results of this research, several conclusions have been withdrawn: (1) The drone's unstable nature characteristic inherently, even though it is analyzed from the initial hover condition. Thus, the drone and its system as a whole can never be separated with the feedback control that made it can maneuver adequately. (2) Several technical parameters of this Hexacopter, including the geometry, mass, the moment of inertia, until the estimation of motor throttle is required to achieve its hover conditions, both in the no-payload case and with-payload of 5 kg case.  (3) The Hexacopter basic dynamic system model is based on the flight dynamics until its motion system control tuning through root locus map analysis using Simulink.
OPTIMASI MULTIOBJEKTIF PARAMETER PROSES 3D PRINTER JENIS FUSED DEPOSITION MODELLING MENGGUNAKAN GREY RELATIONAL ANALYSIS-TAGUCHI
Authors: Shanaswara Adhira Azhari , Aditya Muhammad Randi Nur , Rashyid Muhammad Ibnu , Herianto Herianto , Muflikhun Muhammad Akhsin
Published: December 2023

The development of fused deposition modelling (FDM) 3D printer models is increasing where the applications can be found in several aspects such as rapid prototyping, functionally components, and parts for assembly process. These conditions required excellent printing quality. One of the factors that affect the printing quality was process parameter setting. There are several parameters process that are used in 3D printing. Hence, the use of these parameters that recommended by manufacturer often give the average results, not the best results. The recent study purposes are to gain optimal setting that give accuracy in the dimension and suitable surface condition. There are 12 factors with 3 different levels. The study used Taguchi method L-27 and grey relational analysis (GRA) to determine the most efficient combinations that can fulfill multi-objective. The results showed that to acquire the accuracy and total dimension, the following combination are used; LH0,075mm, LW0,45mm, IPLines, WT0,8mm, PT205C, FR85%, RD6,5mm, RS30mm/s, PS30mm/s, OWS15mm/s2, PA10mm/s2, and PJ10mm/s where wall thickness (WT); flow rate (FR); and retraction distance (RD) used as 3 essential factors that can influence the respond of the machine. The best surface roughness gathered with the combination as follow; LH0,075mm, LW0,35mm, IPGrid, WT0,8mm, PT200C, FR95%, RD2mm, RS30mm/s, PS70mm/s, OWS25mm/s, PA3000mm/s2, dan PJ30mm/s where the layer height (LH) was the essential factor that affect the machine respond. The accuracy of the dimension and the most optimum surface roughness can be acquired by the following combinations: LH0,075mm, LW0,35mm, IPGrid, WT0,8mm, PT205C, FR95%, RD4,5mm, RS30mm/s, PS70 m/s, OWS15 mm/s, PA3000 mm/s2, dan PJ10mm/s.
DETEKSI CACAT BANTALAN GELINDING BERBASIS ALGORITMA DECISION TREES DAN PARAMETER STATISTIK
Authors: Kamiel Berli Paripurna , Anjarico Fauzan , Sudarisman Sudarisman
Published: December 2023

Rolling bearings are a common machine element found in rotary machines. The components in the rolling bearing such as the inner race, outer race, rolling element, and cage are the parts that are often damaged. Traditionally spectrum analysis is used to diagnose bearing defects. However, spectrum analysis is not effectively applied to bearings with early defects because the vibration signal generated is dominated by frequency components from other machine elements, so the frequency of bearing defects cannot be observed. This study proposes an alternative method of detecting bearing defects based on vibration signals using machine learning with a decision tree algorithm. This method is more effective than the spectrum analysis method because machine learning is based on feature extraction and pattern recognition of vibration signal data, therefore, providing classification results directly without further analysis. Vibration signals were recorded using an accelerometer mounted on a bearing housing on a test rig. Nine-time domain statistical parameters and six frequency domain statistical parameters were extracted from the vibration signal and then used as input for decision trees. The results show that the decision trees algorithm gives an accuracy of 94.4% for classifying three rolling bearing conditions using the input of 6 selected frequency domain statistical parameters.
SIMULATION-BASED ASSESSMENT KINERJA TERMAL PADA CONCENTRIC TUBE HEAT EXCHANGER
Authors: Kristiawan Budi , Wijayanta Agung Tri , Juwana Wibawa Endra , Rachmanto Rendy Adhi , Enoki Koji , Prasojo Arfi Singgih
Published: December 2023

The double-pipe heat exchanger is one of the most popular heat exchanger devices. In this study, the concentric tube heat exchanger as the double pipe heat exchanger device was simulated with ANSYS code FLUENT. The simulation was done by based on the Reynolds number variation from 400010.000 using the method of co-current and counter flow. The hydrodynamic and thermal simulation results agree with the empirical correlation of the Pethukov and Dittus-Bolter equations, respectively. The friction factors of the water base fluid and nanofluid f TiO2/water f (0.1 vol.%) do not result in a significant difference in the turbulent flow regime for both co-current and counter flow. The thermal performance of TiO2/water (0.1% vol) nanofluid as indicated by the value of the heat transfer coefficient results in an increase of 6.9% for counter low flow and 6.0% for co-current flow. Meanwhile, the direction of fluid flow in the heat exchanger does not have a significant effect on its thermal performance.
PERANCANGAN DAN MODIFIKASI MOLD INSERT UNTUK MENINGKATKAN KAPASITAS PRODUKSI LIGHT GUIDE
Authors: Irawan Benny Haddli , Septaningrum Putri , Wijayanti Ita , Hakim Rahman , Saputra Ihsan
Published: December 2023

The use of plastic is often found in human life. Therefore, many manufacturing companies are competing to increase the production and quality of their plastic products. One way to increase production is to redesign a Mold base so that the Mold has a larger production capacity than before. The increase in product demand from consumers, which was initially 65,000 pcs/month to 95,000 pcs/month, is also the background for conducting this research. The purpose of this study is to redesign the soft tool using the old Mold base. The design uses Siemens UG NX 5 software. The Mold used is a two-plate Mold. The manufacture of the core cavity uses NAK 80 steel and plastic raw material in the form of Polycarbonate (PC). At the end of the study, a simulation was carried out using the Moldex 3D Flow Mold software to see the cycle time of the old and new Mold injection processes. From the results of this study, production capacity increased from 67,804 pcs/month to 118,536 pcs/month resulting in twice as many products as the old Mold design, with an increase in cycle time of 14.37% longer than the old Mold design also ensuring the quality of the product is maintained.
PENGARUH GEOMETRI DAN PENAMBAHAN JUMLAH SIRIP TERHADAP DISTRIBUSI TEMPERATUR HEAT SINK SEBAGAI ALTERNATIF PENDINGINAN PADA PIRANTI ELEKTRONIK
Authors: Subekti Fajar , Wahyudi Slamet , Gapsari Femiana
Published: December 2023

This study aims to determine the effect of the geometry shape of the copper material heat sink fins on the surface temperature distribution of the heat sink. The material used in this research is pure copper, the shape of the heat sink fins is made rippled with the addition of the number of fins 5, 6, and 7 and the input temperature is varied from 40 C to 80 C with airflow variations from 0.2 m/s to 1 m/s. The first step is to create a heat sink design with Autodesk Inventor. Then the plan is simulated with Autodesk CFD to solve the continuity, momentum, turbulence, and energy equations. Based on the method that has been carried out, it is found that the addition of variations in the number of fins affects the decrease in surface temperature. The highest temperature drop on fin 5 ripples is 24.1 C. The heat energy transfer rate increased by 0.4657 W. The convection heat transfer coefficient  increased by 3.47 W/m²C. Nusselt number shows an increase of 271. Fin performance has increased efficiency by  63.4 %, and effectiveness by 1.61. The results of this study are expected to provide practical alternatives that can be widely adopted on a heatsink plate that is very promising for future thermal developments.
Tourism Carrying Capacity (TCC) of Tongkonan Lempe Tourism Attraction, North Toraja Regency
Authors: Yabarmase Antonius Christian Sine Marannu , Wicaksono Agus Dwi , Dinanti Dian , Munenge Sizyoongo
Published: December 2023

Tongkonan Lempe is one of tourist attraction in Lolai Tourist Area in Kapala Pitu Subdistrict, North Toraja Regency. Based on North Toraja Regional Spatial Plan 2012-2023, Kapala Pitu Subdistrict was set as a landslide-prone area. However, in the Lolai tourist area, there was a large-scaling land clearing for tourist objects without regard to environmental impact. The purpose of this study is to determine the Ecological Carrying Capacity and Economic Carrying Capacity of Tongkonan Lempe Tourism Object. The method used in this research is the Cifuentes Method to determine ecological carrying capacity which consists of Physical Carrying Capacity (PCC), Real Carrying Capacity (RCC), Management Carrying Capacity (MCC), and Effective Carrying Capacity (ECC). Meanwhile, to determine Economic Carrying Capacity use Cost Benefit Analysis. Existing tourist visits have exceeded the value of the environmental carrying capacity. The Tongkonan Lempe tourist attraction can only accommodate a maximum of 31 tourists per day, while the average number of visits in 2022 is expected to be 122 visitors per day.According to the cost-benefit analysis, the Tongkonan Lempe tourist attraction's management will have to spend IDR 50,596,000 to preserve environmental quality with the current number of visitors of 122. If the number of visitors is lowered to an environmentally ideal level of 31, the net economic profit value is IDR 17,236,000 because the environmental conditions are still maintained. Several recommendations can be made based on several literature sources to raise the ecological carrying capacity including: replanting by adding types of vegetation to increase the value of the flora diversity correction factor, increasing the number of officers to improve services, especially during holidays, and limiting the number of tourists.
Measurement of Performance Community-Based Waste Treatment Facility (TPS 3R Saling Asih) Bandung City
Authors: Royhan Winneyni Salsabila , Sari Kartika Eka , Meidiana Christia , Ismail Hairi , Aledeh Muhammad
Published: December 2023

Increasing amounts of household waste due to population growth may lead to problems if it is not accompanied by an efficient waste management system. Along with efficiency, waste management should include waste reduction which can be implemented through Reduce, Reuse, and Recycle (3R concept). 3R can be conducted in a facility called TPS3R. Bandung, one of the big cities in Indonesia has implemented 3R in TPS3R. There are a growing number of TPS3Rs being built, but most of them lack management capacity. Out of seven TPS3Rs in Bandung City, TPS3R Saling Asih has the lowest capacity to treat the waste which is only 28.89% of the total waste production in the serviced area. Therefore, this research aims to evaluate the Level of Service (LoS) TPS3R Saling Asih using indicators scored based on some criteria. The score is weighted according to the importance and the urgency. The indicators are grouped into five aspects i.e., related regulation products, technical-technological, management institutional, financial operational, and participation. The evaluation results gained a relative value of 14.25 indicating less function. The recommendations for the results were preparation for performance improvement focusing on the indicators with low values.
Study of Biopharmaceutical Agricultural Development in Karanganyar Regency
Authors: Pinandhito Gregorius Purusatama Ritang , Nuriawati Nita , Rahmawati  , Dianafi Dani Rizky , Wirawati Dayang Kalih Shafira , Mayori Indriya Mardiana , Syakira Najla Alifa , Arianto Nurul Fauziah , Pratama Rizky Aditya , Cahyani Shilla Dewanti Ayu , Nchimunya Nachilime
Published: December 2023

Agriculture in Karanganyar Regency is not considered a primary sector in the Solo Raya area; however, it possesses untapped potential that needs to be developed. Medicinal plants, or bio-pharmaceutical commodities, are among the prominent potentials, with Karanganyar Regency ranking among the top 10 highest producers in Central Java Province and having seven sub-districts as centres for medicinal plant cultivation. Ginger, turmeric, and galangal are outstanding commodities in the Agricultural Region of Karanganyar, identified as potential and key commodities based on linkage system analysis, agropolitan subsystem analysis, spatial structure analysis, LQ and shiftshare analysis, policy analysis, and land carrying capacity analysis. The analysis reveals the presence of potential and challenges as driving and inhibiting factors. Nevertheless, the bio-pharmaceutical agriculture sector faces several issues, such as inadequate support in terms of facilities and infrastructure, as well as imbalances in inter-regional infrastructure conditions that impact marketing disparities. Additionally, monitoring and reporting of agricultural sector development programs are not yet optimal. Therefore, further analysis and studies are needed to develop the agricultural sector, particularly in the bio-pharmaceutical commodities domain.
Navigating the Rise of Smart Tourism: Implications of Technology and Data for Sustainable Industry Growth
Authors: Hoang Hien
Published: December 2023

This paper explores the complex landscape of smart tourism, investigating the implications of technology and data for sustainable growth within the tourism industry. Understanding the nuanced interplay between smart tourism initiatives and sustainability has become critical as the sector undergoes a paradigm shift driven by technological advancements. The paper contextualizes the emergence of smart tourism, unraveling the pivotal role of technology and data in transforming industry dynamics. Through comprehensive analysis, it examines how cutting-edge technologies including artificial intelligence, big data analytics, and the Internet of Things shape diverse aspects of tourism, from customer experience to operational efficiency. Additionally, it synthesizes evidence on the benefits of smart tourism for enhancing efficiency, sustainability, inclusiveness, experiential quality, and competitiveness across the sector. In conclusion, it contemplates future applications while underscoring the need for a balanced integration of technology and data to realize the promise of smart tourism. Further research on emerging applications, challenges, and best practices is highlighted to guide destinations towards this technology-enabled yet sustainable future.
Management of Humeral Fracture in a Dog at Klinik Bersama Dokter Hewan Jungle Bekasi
Authors:   Faculty of Veterinary Medicine, Universitas Brawijaya, Malang, Indonesia, Prayoga Toni Aditya , Panggabean Rudi H. , Rickyawan Nofan
Published: December 2023

A humeral fracture is a discontinuity of the humeral bone due to an injury or illness. A three-year-old black mongrel female dog weighing 12.5 kg was brought to the Jungle Veterinary Clinic in Bekasi City, Indonesia, due to lameness and swelling in the left front limb. The radiological examination indicated an oblique fracture of the distal diaphysis of the left humerus. Haematological and biochemistry tests indicated neutrophilia, leukocytosis, and decreased erythrocyte, haemoglobin, hematocrit, MCV and MCH levels, while the levels of globulin and ALP were elevated. An orthopaedic surgery was performed using cerclage wires in conjunction with the intramedullary pin approach to immobilize the fracture. Post-surgery medical treatments were oral Amoxicillin 20 mg/kg, tramadol 5 mg/kg, meloxicam 0.1 mg/kg, Curcuma™ ½ tablet, Sangobion™ ½ tablet, and Kalmicetin™ ointment for topical wound dressing twice a day. The surgical wound healed and front leg function improved seven days after surgery
Parasites Prevalence of Dairy Cattle in Argopuro Area, Krucil District, Probolinggo Regency, Indonesia
Authors: Pradana Giffari Danindra , Mufasirin Mufasirin , Madyawati Sri Pantja , Suwanti Lucia Tri , Kusnoto Kusnoto , Sunarso Agus , Aryaloka Suhita
Published: December 2023

This study aimed to identify endoparasitic species and their prevalence in dairy cows in the Probolinggo, Indonesia. This survey was conducted in the Cooperation of Argopuro, in the hill side of Krucil district, Probolinggo regency, during rainy season from March until July 2020. Faecal samples were collected (n=100), and three fecal examinations were performed for parasite identification: native, sedimentation, and flotation techniques. Results showed that the prevalence of endoparasitosis was 56%; 29% was due to helminthiases and the other 37% was of Balantidium coli. Fasciola sp., Oesophagostomum sp., Gaigeria pachyscelis, Toxocara vitulorum, Mecistocirrus digitatus, Chabertia sp. were among the helminths detected. The Lucient Brump test indicated that among samples infected with helminths (n=29), 89.7% were mild, 6.9% were moderate and 3.4% were severely infected. Further, the study estimated that the level of burden with Balantidium coli was identified to be mild in 62.2%, moderate in 32.4%, and severe in 5.4% of the positive samples, respectively (n=37). This study indicates that during the commencement of the rainy season, the campaign of effective endoparasitic control could be advisable in the study area
Proposta de plano de manejo para o geossítio Gruta do Índio, Geoparque Quarta Colônia Aspirante UNESCO, RS, Brasil
Authors: Vestena Michele Hennig , Figueiró Adriano Severo
Published: December 2023

O Geossítio Gruta do Índio está localizado no município de Agudo, Rio Grande do Sul, Brasil, e é um dos Geossítios do Geoparque Quarta Colônia Aspirante UNESCO. Sendo uma caverna esculpida em arenito, possui interesses turísticos, atrelado à beleza cênica, relevância antropológica (considerando que a região já foi habitada por comunidades indígenas no passado) e, também, de cunho científico e didático. Entretanto, por estar em uma propriedade particular e receber visitações sem controle, atualmente a ação antrópica é um fator que está pondo em risco a integridade do ambiente cavernícola. Nesse sentido, o presente trabalho buscou, tendo como base conceitual os princípios da metodologia do Limite Aceitável de Câmbio – LAC, apresentar um plano de manejo, com estratégias de visitação, que podem ajudar a evitar a degradação do patrimônio e fortalecer o turismo no Geoparque Quarta Colônia Aspirante UNESCO. Foi proposto uma delimitação para o Geossítio, com 3 zonas diferenciadas, sendo uma zona de conservação, uma área de utilização de recursos naturais, e uma área de proteção geopatrimonial, que prioriza a proteção da gruta. Já no que diz respeito às medidas de manejo propostas, estas podem ser resumidas a três principais estratégias, sendo a implementação de ações de educação ambiental, o investimento em infraestrutura e em material interpretativo. Por fim, espera-se que este trabalho sirva como base para que medidas de conservação sejam aplicadas no Geossítio Gruta do Índio.
O Poder da Geografia, segundo Tim Marshall (2021)
Authors: Fernandes Pedro
Published: December 2023

Recensão critica ao livro o Poder da Geografia de Tim Marshall (2021)
Bhagavad Gita for Minimizing Dark Side of Leadership
Authors: Rastogi Shailesh , Kuknor Sunaina , P. Singh Satyendra
Published: December 2023

The Leader-Member Exchange (LMX) leadership theory emphasizes the dynamic relationship between leaders and followers. Further, LMX differentiation proposes that leaders divide their teams into in-groups and out-groups based on the quality of the relationship. In this process, the criteria for selecting in-group members are majorly based on personal preferences rather than objectivity. Further, the in-group members build confidence in the leader to minimize leader insecurity in the workplace. The out-group members bear the brunch of such an understanding between the leader and in-group members. This situation can be referred to as the Dark side of leadership, where followers are given differential treatment. This study takes insights from ancient scriptures of the Bhagavad Gita (BG), where the leader is seen as a trustee, to reduce this differentiation and increase leader security. The paper attempts to explore and extract the concepts from BG and apply them to leadership theory and practice. It is found that the BG provides solutions to reduce leadership deficit (LD) and have a conducive work environment (CWE), and it does not ask for any financial investments. The paper’s findings facilitate business leaders in reducing in-group and out-group categorizing and leader insecurity leading to effective leadership for better business results.
Mediating Role of Organisational Commitment in the Relationship between Job Involvement and Organizational Citizenship Behaviour
Authors: Tripathi Shweta , Kumar Singh Ajay
Published: December 2023

The basic idea behind this study was to assess how job involvement affects self-report measures of organizational citizenship behaviours. We made use of mediation model to measure the impact of job involvement and organizational commitment on employees’ citizenship behaviours. For this purpose data was collected in Delhi NCR region from 170 employees from 4 IT companies and 5 BPO companies. Job involvement was measured by asking respondents to reveal their degree of agreement on the extent to which their job behaviour is depicted by each of the 10 items. Respondents’ perception of OCB was measured using 5 dimensions: Altruism, Civic Virtue, conscientiousness, Sportsmanship, and Courtesy. Outcomes of the analysis reveal that positive relationship of Job involvement with organizational commitment and OCB. Further, organizational commitment impeccably intervene association between job involvement and organizational citizenship behaviour. Thus, nurturing high commitment levels through enhancing job involvement level can be an effective tool to enhance citizenship behaviours on the part of employees. Lastly, theoretical and practical impacts of the findings are discussed.