bluuebunny/crossref_metadata_2025 huggingface dataset:
Application of circular economy principles to midstream infrastructural sector: A review of strategies for waste minimization and recycling
Authors: Onyeka Virginia Ekunke  , Ekunke Godwin Odor  , Ikechukwu Bismarck Owunna  , Nafisa Hammawa Damare  , Hope Iyobosa Izevbigie  , Ilyas Okikiola Muritala
Published: November 2024

Circular economy in midstream operations promotes resource reuse, waste reduction, and sustainable pipeline life cycle management. The transition toward a sustainable oil and gas industry needs to be enabled through the adoption of this concept, especially in the midstream sector, where environmental impact is high. This review focuses on practices in the waste minimization and recycling strategy of midstream infrastructure, including material recycling, reuse of processing debris and the conversion of waste into valuables. It underlines potential lifecycle environmental savings and resource efficiency, besides emphasizing on how innovative approaches are important in mitigating the ecological footprint of midstream activities. It also points out the knowledge gaps on practical integration of the circular economy principles within this very industry and came up with actionable recommendations for industry stakeholders. Through the analysis of the most recent published literatures and case studies of successful implementation, it has been indicated that many companies that use these techniques have succeeded in reducing waste output by over 30%. Conclusively, full scrutiny by this review has helped to attain a holistic approach towards sustainability in the oil and gas industry through wider adoption of recycling and sustainable practices in midstream operations.
Swallowing outcomes in brachytherapy radiation approach for head and neck cancer survivors- A twin case-based observations
Authors: Dr. Sai Kumari  , Mr. Darshan D
Published: November 2024

Swallowing dysfunction is a prevailing state following radiotherapy in patients with head and neck cancer. The progress in the treatment techniques has allowed more precise radiation administration to the tumour and has reduced damage to adjacent issues. Nonetheless, a proportion of patients still suffer from swallowing dysfunction following radiotherapy. Brachytherapy is an advanced procedure to treat and manage cancers increasing in recent clinical practice. BT has been used as a tool to facilitate the delivery of a high tumour dose in which it eventually reduces the doses to neighbouring swallowing structures, compared with conventional RT. There are no studies reported the swallowing abilities following brachytherapy. Hence considering the lacunae in the literature and the effect of radiation on swallowing abilities the present case study was taken to represent the swallowing abilities in oral cancer patients received brachytherapy. Two cases diagnosed with carcinoma of buccal mucosa and tongue were given brachytherapy. The speech and swallowing abilities were affected in both the condition prior to brachytherapy. Following brachytherapy speech and swallow rehabilitation was carried out for one month and both of them showed significant improvement and case with buccal mucosa showed greater improvement than carcinoma of tongue. The present concludes that there will be organ specific dysphagia symptoms in brachytherapy and involvement of adjacent structures are minimal.
Uji Aktivitas Antibakteri Deodorant Spray Tea Tree Oil (Melaleuca alternifolia) Terhadap Staphylococcus aureus
Authors: Hidayati Nurul , Budiman Hendra , Sarmini Sarmini
Published: November 2024

Deodorant spray adalah produk kosmetik yang digunakan untuk menyerap keringat, manutup bau badan, dan mengurangi bau badan. Deodorant yang beredar dan digunakan masyarakat sebagian besar berbahan dasar sintesis.  Penggunaan deodorant berbahan sintesis secara terus-menerus berdampak buruk bagi tubuh. Solusinya adalah dengan mengembangkan formulasi deodorant spray dengan zat aktif alami. Tea tree oil efektif sebagai antibakteri, yang dapat mengendalikan bau ketiak. Tujuan penelitian ini adalah untuk mengetahui aktivitas antibakteri deodorant spray terhadap Staphylococcus aureus dan formula dengan konsentrasi tea tree oil yang dapat menghambat paling kuat. Metode penelitian ini eksperimental laboratorium. Formula deodorant menggunakan variasi konsentrasi tea tree oil yaitu 2% (F1), 3% (FII), dan 5% (FIII). Sediaan kemudian dilakukan evaluasi organoleptis, homogenitas, pH, viskositas, daya sebar, daya lekat, kejernihan, dan uji aktivitas antibakteri. Hasil penelitian menunjukkan ketiga formula dapat menghambat Staphylococcus aureus, dibuktikan dengan adanya zona hambat. Formula terbaik deodorant spray yaitu F3 dengan konsentrasi tea tree oil 5% dengan zona hambat paling kuat yaitu 24, 6 mm.
Penilaian Efektivitas Metabolit Sekunder Trichoderma harzianum dalam Menghambat Pertumbuhan Colletotricum capsici dan Cercospora capsici : Kajian In Vitro
Authors: Watngil Baida , Kalay A. Marthin , Talahaturuson Abraham , Uruilal Costanza
Published: November 2024

The cultivation of chili plants is often faced with obstacles such as disease attacks, especially anthracnose disease caused by the fungus Colletotricum capsici and leaf spot disease caused by the fungus Cercospora capsici. This study aimed to determine the effective concentration of T. harzianum secondary metabolites (MSTh) in inhibiting the growth of Colletotricum capsici and Cercospora capsici in vitro. The experiments used various MSTh concentrations: 0%, 10%, 20%, 30%, 40%, and 50%. The research results found that administration of MSTh could inhibit the growth of Colletotricum capsici and Cercospora capsici in vitro. Giving MSTh at a concentration of 10% can significantly inhibit the growth of Colletotricum capsici and Cercospora capsici compared to without MSTh. The effective concentration indicated by the percentage value of inhibitory power and colony weight reduction is an MSTh concentration of 40% with a growth inhibition of Colletotricum capsici of 89.49% and an MSTH concentration of 50% with a growth inhibition of Cercospora capsici of 57.78%.
Keanekaragaman Serangga Pada Areal Pertanaman Kakao Dalam Sistem Dusung Di Kecamatan Teon Nila Serua Kabupaten Maluku Tengah
Authors: Hommy Marisa , Leatemia Johanna Audrey , Masauna Esther Dolfina
Published: November 2024

Keanekaragaman serangga mempunyai peran dalam menjaga keseimbangan jaring-jaring makanan dalam suatu ekosistem pertanian. Tujuan penelitian ini adalah mendapatkan data keanekaragaman dan dominansi serangga yang ada pada pertanaman kakao. Penelitian ini dilaksanakan dalam dua tahap yaitu survey lapangan pada 2 lokasi pertanaman kakao di Kecamatan Teon Nila Serua dan penelitian laboratorium untuk mengidentifikasi serangga yang dikumpulkan. Ada empat jenis perangkap yang digunakan dalam penelitian yaitu perangkap likat kuning, perangkap umpan, perangkap jebakan, dan perangkap lampu. Hasil penelitian menunjukan, pada pertanaman kakao di temukan 28 famili, 6 ordo, 3.879 individu serangga dengan indeks keanekaragaman 1,036 dan dominansi 0,471 yang termasuk kategori sedang.
Analysis of the Newest Design of Axial Piston Hydraulic Machines with Reduced Friction Losses and Leaks
Authors: Avrunin Grygoriy , Hlushkova Diana , Podrigalo Mikhail , Potoroka Anatoly
Published: November 2024

Problem. Analysis of modern achievements in the field of volumetric hydraulic drives to improve the technical level of construction and road machines. Goal. Study of the design of the latest foreign development related to the improvement of the technical level of axial-piston volumetric hydraulic machines, in particular pumps and hydraulic motors according to the scheme of Innas floating cylinders. This design, according to the proposal of its inventors, is intended to work as pumps with a flow of up to 7400 l/min or hydraulic motors with a working volume of up to 5000 cm3 at a pressure of up to 50 MPa. Methodology. Analysis of the results of comparative bench tests of the Innas axial piston pump of the latest development and volumetric hydraulic machines of various designs, in particular axial and radial piston, as well as gear ones. Results. According to the results of comparative tests, the new design of the Innas axial-piston pump is significantly ahead of other serial hydraulic machines in terms of efficiency. The total efficiency value of 96 % achieved in the Innas pump shows the promise of such hydraulic machines. Originality. Analysis of the results of experimental studies with the determination of the features of the structures of hydraulic machines in terms of volumetric and hydromechanical power losses. It is concluded that Innas hydraulic motors can be used in trailing volumetric hydraulic drives with hydraulic power amplifiers, for which the characteristic of friction in the displacement mode is the main one from the point of view of the accuracy of the execution of the specified control signals. Practical value. The given materials are useful for specialists in the field of mechanical engineering, in particular, the design of volumetric hydraulic drives for construction and road machines
The influence of the design features of the fuel injector atomizer on the process of diesel fuel injection
Authors: Afonin Valentyn , Voronkov Oleksandr , Avramenko Andrii , Vorobyov Dmytro
Published: November 2024

Abstract. Problem. Increasing the demands for the technical and economic characteristics and the resource of modern augmented diesel engines requires finding ways and approaches to improve their design and systems, in particular, their fuel supply system. Changing the design parameters of the fuel injector atomizer allows to influence the conditions of fuel injection, its atomization in the combustion chamber, and the efficiency of the engine. The number and mutual arrangement of the nozzle holes of the fuel injector atomizer and their diameter are chosen by manufacturers based on the design features of the engine, in particular, the configuration of the combustion chamber and the conditions for filling the cylinder with fresh air. Goal. The purpose of the work was to carry out comparative numerical modelling to assess the influence of the number and diameter of the nozzle holes of the fuel injector atomizer on the diesel fuel injection process. Methodology. The problem is considered in a three-dimensional non-stationary setting. For numerical modelling, the geometry of the flow part of the fuel injector atomizer was formed, taking into account its design features (standard and modernized versions). The standard version has 7 nozzle holes with a diameter of 0.25 mm (evenly arranged relative to the axis of the atomizer, and the modernized version has 4 holes with a diameter of 0.3 mm in the standard place, evenly arranged relative to the axis of the atomizer and, additionally, 4 holes with a diameter of 0.2 mm from above (in the area of the closing cone) evenly arranged relative to the axis of the atomizer, but with a rotation around the axis of the atomizer by 45 degrees relative to the lower holes. To describe the process of the diesel fuel flow in the flow part of the fuel injector atomizer, the k - ε turbulence model is used, and to describe the process of phase transition from a liquid state to a vapour state – a mixture model is used. Results. The obtained results showed that the use of two rows of nozzle holes of different diameters for the atomizer of the fuel injector of the transport diesel engine allows to effectively organize the fuel injection process. For the atomizer nozzle of the modernized design, the volumetric fuel consumption is 30% for the upper holes and 70% for the lower ones. Originality. The scientific novelty of the work lies in determining the influence of the number and diameter of the nozzle holes of the fuel injector nozzle on the conditions of diesel fuel injection, taking into account cavitation effects. Practical value. The total area of the nozzle holes in the modernized version was increased by 20%, which makes it possible to increase the cycle supply of diesel fuel. It is especially important when using new types of fuel with a lower paraffin content and, accordingly, lower caloric content