iosr-JMCE   Volume-22 ~ Issue-6 ~ Nov. – Dec. 2025

Abstract: The current review paper examines how machine vision systems can be used to inspect cylindrical gears with reference to the shortcomings of the conventional techniques which include Coordinate Measuring Machines (CMMs), as well as manual inspection. Machine vision systems are highly throughput, non-contact, and real time, which enhance the quality control of gears (Wang et al., 2020). Machine learning and artificial intelligence (AI), specifically, Convolutional....

[1]. Kumar, A., & Sharma, R. (2020). Gear Manufacturing Quality Control Through Machine Vision Technology. Journal Of Manufacturing Science And Technology, 45(2) 123-134.
[2]. Li, Y., & Zhou, X. (2021). Defect Detection During Cylindrical Gear Inspection Driven By AI. International Journal Of Precision Engineering, 29(3): 567-576.
[3]. Wang, Z., Li, W., & Zhang, T. (2020). Machine Vision And AI Model Based Non-Contact Gear Inspection. International Journal Of Machine Vision, 55(3), 203-215.
[4]. Wang, L., Liu, S., & Zhao, F. (2019). Mechanical System Manufacturing With The Use Of Machine Vision. Journal Of Mechanical Engineering, Vol. 44(8), P. 120-133.
[5]. Zhang, Q., Wang, Z., & Wu, J. (2020). Real-Time Gear Defect Detection And Measurement By Using Machine Vision. Manufacturing And Materials Processing, 39(6), 189-201.

Abstract: This research aims to evaluate the effectiveness of a Filtration and Disinfection Technology system in improving the quality of domestic wastewater to meet clean water standards the Minister of Health Regulation Number 2 of 2023. The method involves comparing key pollutant parameters before and after treatment using a prototype filtering apparatus......

Keywords: Domestic Wastewater, Filtrasi, Dissolved Iron, Total Hardness, the Minister of Health Regulation Number 2 of 2023

[1] Peraturan Menteri Kesehatan RI Nomor 2 Tahun 2023 Tentang Peraturan Pelaksanaan Peraturan Pemerintah Nomor 66 Tahun 2014 Tentang Kesehatan Lingkungan.
[2] Bermuli, F. Z. A., Mangangka, I. R., & Dundu, A. K. T. (2023). Filtration Method Using Rice Husk, Charcoal, Zeolite Stones And Sand. Jurnal Tekno, 21(86).
[3] Dahlan, M. H., Teguh, D., & Utama, F. (2011). Performance Of Ceramic Membranes In Processing Well Water Into Clean Water. Jurnal Teknik Kimia, 17(5), 38–49.
[4] Puspitahati, C., & Bambang, D. (2012). STUDY OF BIOSAND FILTER PERFORMANCE TO REDUCE PHOSPATE OF LAUNDRY WASTEWATER. Jurnal Teknik Kimia USU.
[5] Masta, Ngia. (2020). Scanning Electron Microscopy Learning Material Book. Patra Widya: Seri Penerbitan Penelitian Sejarah Dan Budaya, 21(3), I–Iii.

Abstract: To address the issues in external auditory canal (EAC) lesion diagnosis, such as reliance on professional experience, poor portability of traditional equipment, and low primary screening efficiency, a dedicated portable visualization device for the EAC was designed. Additionally, an intelligent EAC lesion recognition scheme based on the YOLO algorithm was proposed, constructing an integrated "acquisition-preprocessing-recognition-feedback.....

Keywords: YOLO Algorithm; Ear Canal Lesions; Image Recognition; Object Detection; Artificial Intelligence; Auxiliary Diagnosis

[1]. Ji, K., Xia, G. H., Liu, S. S. (2011). 76 Cases Of Foreign Bodies In The External Auditory Canal[J]. Chinese Journal Of Ophthalmology And Otorhinolaryngology, 11(1): 55.
[2]. Tian, Y., Ye, Q., Doermann, D. (2025). Yolov12: Attention-Centric Real-Time Object Detectors[EB/OL]. (2025)[2025-11-09].
Https://Arxiv.Org/Abs/2502.12524.
[3]. Ansari, M. M. (2025). Academic Sharing: Evaluating The Performance Of Grounding DINO, YOLO, And DINO In Vascular Stenosis Detection Based On The ARCADE Dataset[EB/OL]. (2025-04-11)[2025-11-09].
Https://Blog.Csdn.Net/Weixin_51607793/Article/Details/147144838

Abstract: The search for alternative fuels are driven by a few reasons: the concerns for sustainability of the fossil fuels or the uneven availability of these resources, increasing carbon emissions from conventional fossil fuels, advances in alternative fuel technologies, government policies asking for transition away from fossil fuel. These reasons are also acting as major drivers in advanced countries in the West as well as emerging economies in Asia. As a result, the global automotive industry is also undergoing a transformative shift as the urgency to reduce carbon emissions and....

[1]. Airbus. (2022). ZEROe - Towards the world's first zero-emission commercial aircraft. Retrieved from https://www.airbus.com/en/innovation/zero-emission/hydrogen/zeroe
[2]. Anglo American. (2023). nuGen™ – Zero Emission Haulage Solution. Retrieved from https://www.angloamerican.com/futuresmart/stories/our-industry/technology-innovation/ nugen-zero-emission-haulage-solution
[3]. Aptera Motors. (2023). Never Charge. Retrieved from https://aptera.us/never-charge/
[4]. BloombergNEF. (2023). Hydrogen Economy Outlook. Bloomberg Finance L.P.
[5]. California ISO. (2023). Today's Outlook. Retrieved from http://www.caiso.com/TodaysOutlook/Pages/default.aspx

Abstract: The late 21 st -century commercial space race, led by commercial organizations, including Blue Origin, Virgin Galactic and SpaceX, has made space tourism a household name and ensured a new generation of democratized access to the final frontier. To respond to this research question, this paper performs a critical technology analysis to determine: Is space tourism technologically prepared to conduct safe, dependable and scalable commercial business, or is it mostly marketing hype? This discussion is a kind of reality check in the sense that it has been shown in a systematic manner that there is still a difference in the technological preparations of sub-orbital and orbital passenger...

[1]. Axiom Space. (2025). Axiom missions. Retrieved October 26, 2025, from https://www.axiomspace.com/missions
[2]. Blue Origin. (n.d.). New Shepard. Retrieved October 26, 2025, from https://www.blueorigin.com/new-shepard
[3]. Curtis, H. D. (2020). Orbital mechanics for engineering students (4th ed.). Butterworth-Heinemann.
[4]. Davenport, C. (2018). The space barons: Elon Musk, Jeff Bezos, and the quest to colonize the cosmos. PublicAffairs.
[5]. Di Cocco, A. (2020). Radiation environment in low-Earth orbit: A challenge for human spaceflight. Life Sciences in Space Research, 24, 1-7. https://www.google.com/search?q=https://doi.org/10.1016/j.lssr.2019.09.003

Abstract: Green hydrogen, produced through water electrolysis powered by renewable energy, is emerging as a cornerstone of low-carbon energy systems. This paper develops a simulation framework that integrates solar and wind variability, electrolyzer operational constraints, cost modeling, and carbon accounting. In a baseline 100 MW case with mixed solar–wind input, the system achieves a proxy LCOH of $2/kg and net abatement of 0.5 Mt CO2 over 26 years....

Keywords: Green Hydrogen; Renewable Energy; Energy Geotechnics; Simulation Modeling; Sensitivity Analysis

[1]. Ajanovic, A., Haas, R., 2021. Prospects and impediments for hydrogen and fuel cell vehicles in the transport sector. International Journal of Hydrogen Energy 46, 10049–10058. doi:10.1016/j.ijhydene.2020.10.260.
[2]. Arinze, E.E., Okechukwu, G., Okafor, C.C., Mmonwuba, N., Eke, G., Emole, J., Idoko, D., Ndubuisi, G., Anieto, S.B., Akor, D., Orji, I., Ikpendu, K., Uli, F., Ekwueme, B., Lemechi, S., 2025. Green hydrogen pathways for sustainable urban development: Infrastructure, policy, and socio-technical integration. International Journal of Low-Carbon Technologies. Manuscript under review.
[3]. Bailera, M., Lisbona, P., Romeo, L.M., Espatolero, S., 2017. Power to gas projects review: Lab, pilot and demo plants for storing renewable energy and CO2. Renewable and Sustainable Energy Reviews 69, 292–312. doi:10.1016/j.rser.2016.11.130.
[4]. Bains, P., Bennett, S., Collina, L., Connelly, E., Delmastro, C., Evangelopoulou, S., Winkler, C., et al., 2023. Global Hydrogen Review 2023. Technical Report. International Energy Agency. Paris, France. URL: https://www.iea.org/reports/global-hydrogen-review-2023.
[5]. Bicer, Y., Dincer, I., 2018. Clean fuel options with hydrogen for sea transportation: A techno-economic and environmental comparative analysis. International Journal of Hydrogen Energy 42, 7534–7543