bluuebunny/crossref_metadata_2025 huggingface dataset:
The Effect of CEO Education, CEO Tenure, Company Risk, and Environmental Performance on Company Value
Authors: Khawarizmi Aulia Robbani  , Hasnawati Hasnawati , R. Rosiyana Dewi  , Marieta Ariani  , Doris Madhi  , Salsabila Alya
Published: April 2024

This study aims to determine the effect of CEO education, CEO tenure, company risk, and environmental performance on company value. This research used a purposive sampling method with the following criteria: the companies must not be delisted or suspended by the IDX, they must have complete background financial statement data and additional information regarding the educational background and tenure. The 294 samples observed in this research came from 116 companies listed on the Indonesia Stock Exchange that have an environmental management assessment (PROPER) report for the period 2018 – 2020. The research data were collected through the Indonesia Stock Exchange website, the company’s website, and the PROPER report issued by Indonesia’s Ministry of Environment and Forestry. SPSS 27 was used to process the data. The research found that CEO tenure has a negative effect on company value, while environmental performance positively affects company value. However, CEO education and company risk do not have a significant effect on company value. This research provides managerial contributions to investors and management, suggesting that they need to pay attention to aspects of CEO tenure and environmental performance because these factors were responded to by the market.
Perancangan Sistem Reporting Pengolahan dan Pembuangan Limbah Menggunakan Metode Process Design CV Oshwing Washing
Authors: Sihaloho Miranda Cahaya Rembulan Br , Wiyono Wiyono , Nugrahaini Yunita
Published: April 2024

Pengolahan limbah cair tentunya sangat penting bagi perusahaan laundry untuk meminimalisir limbah cair yang dihasilkan. Tata cara pengolahan limbah cair juga diatur dalam Peraturan Pemerintah Republik Indonesia No. 82 Tahun 2001. CV Oshwin Washing merupakan perusahaan laundry yang pengolahan limbahnya masih belum mengikuti aturan pemerintah yang berlaku. Dengan begitu dilakukanlan gap analysis terhadap kondisi aktual dengan kriteria dari aturan pemerintan yang ada. Dari hasil gap analysis dibutuhkan suatu perancangan sistem reporting yang dapat digunakan untuk memenuhi aturan pemerintah. Selain hasil dari gap analysis, dibutuhkan juga metode yang cocok digunakan untuk mengolah hasil gap analysis. Proses Desain merupakan metode yang cocok digunakan karena metode dapat digunakan secara flexible dalam melakukan perancangan proses bisnis. Hasil perancangan ini berupa rancangan proses bisnis sistem reporting pada pengolahan limbah cair yang didalamnya terdapat formulir reporting, penambahan job decription dan penjadwalan reporting. Perancangan ini dapat berdampak bagi perusahaan agar dapat mengolah limbahnya dengan baik dan juga dengan reporting yang ada dapat digunakan untuk memenuhi syarat dari aturan pemerintah yang ada.
Usulan Kebijakan Persediaan Produk Tepung Mocaf dengan Menggunakan Metode Continuous Review (s,S) dan Periodic Review (R,s,S) untuk Meminimasi Overstock pada Gudang Produk Jadi di PT RMI
Authors: Irawanto Sondang Eko , Saragih Nova Indah , Santosa Budi
Published: April 2024

PT RMI merupakan perusahaan yang terletak di Kabupaten Banjarnegara, Jawa Tengah, yang bergerak dalam industri pangan yang memproduksi tepung mocaf. PT RMI memiliki permasalahan utama pada bagian pengendalian persediaan, dimana jumlah persediaan dari produk tepung mocaf selalu lebih tinggi dibandingkan jumlah demand yang ada, sehingga membuat persediaan produk tepung mocaf di gudang produk jadi menjadi overstock dan beberapa produk tepung mocaf terpaksa harus ditempatkan di luar area gudang produk jadi. Terdapat beberapa akar permasalahan yang menyebabkan adanya overstock pada produk tepung mocaf, salah satunya adalah kebijakan persediaan yang kurang optimal. Pada penelitian ini, metode yang digunakan untuk merancang kebijakan persediaan produk tepung mocaf adalah continuous review (s,S) dan periodic review (R,s,S). Dengan menggunakan metode continuous review (s,S) dan periodic review (R,s,S), dapat menghasilkan jumlah ekspektasi overstock produk tepung mocaf masing-masing 94,93% dan 94,27% lebih kecil dibandingkan dengan kondisi eksisting. Selain itu, dengan menggunakan metode continuous review (s,S) dan periodic review (R,s,S), dapat menghasilkan total biaya persediaan masing-masing 15,66% dan 13,93% lebih kecil dibandingkan dengan kondisi eksisting.
Penentuan Rute Armada Pengiriman CV. XYZ Menggunakan Pendekatan Vehicle Routing Problem with Time Window and Heterogeneous Fleet dengan Mixed Integer Linear Programming untuk Meminimasi Tingkat Keterlambatan
Authors: Ramadhan Naufal Agin , Ardiansyah Muhammad Nashir , Pambudi Hardian Kokoh
Published: April 2024

CV. XYZ adalah produsen produk olahan kedelai tahu yang berlokasi di Kota Depok, Jawa Barat dan memiliki konsumen yang tersebar di daerah kota Depok dan Jakarta Selatan. Terdapat tiga jenis rmada transportasi yang dimiliki oleh CV. XYZ, masing-masing memiliki karakteristik yang berbedabeda. Setiap pelanggan memiliki rentang waktu penerimaan barang masing-masing. Bila kendaraan datang di luar rentang waktu yang telah ditentukan, penerimaan barang tidak dapat dilakukan dan produk dikembalikan lagi ke pabrik. CV. XYZ mengalami keterlambatan dalam proses pengirimannya yang diakibatkan oleh penentuan rute yang tidak dilakukan secara teratur yang menyebabkan variasi waktu tempuh dan jam kedatangan yang acak. Permasalahan CV. XYZ dapat diselesaikan menggunakan pendekatan Vehicle Routing Problem (VRP) dengan karakteristik Heterogeneous Fleet dan Time Windows dan Mixed Integer Linear Programming. Penyelesaian model VRP dibantu dengan bahasa pemrograman python dan perangkat lunak solver Gurobi, dengan algoritma Branch & Bound dan Cutting Plane. Hasil penyelesaian model VRP memiliki tingkat keterlambatan sebesar 0% dan berhasil menekan biaya transportasi sebesar 11%.
Perancangan Model Bisnis Kuno Kopi menggunakan Metode Business Model Canvas (BMC) dan Analisis SWOT
Authors: Baswara Yoni Sotya , Praptono Budi , Prambudia Yudha
Published: April 2024

Kuno Kopi merupakan Coffee Shop yang berfokus pada penjualan minuman kopi dan makanan ringan (snack) yang berdiri pada tanggal 1 Februari 2020 dengan sistem penjualan berjenis outlet yang dimana setiap konsumen dapat datang langsung ke outlet untuk membeli produk yang dijual. Kuno Kopi memiliki berbagai macam varian kopi (Kopi Nongko, Kopi Jahe, Kopi Jagung, Kopi Mangli, Kopi Unggul) yang memiliki cita rasa khas karena diproses dengan cara tradisional. Kuno Kopi yang berletak di Kabupaten Nganjuk ini mengalami penurunan penjualan sehingga pendapatan juga menurun dibandingkan tahun-tahun sebelumnya. Hal tersebut disebabkan karena kekurangan supplier bahan baku, kurangnya pemanfaatan promosi, persaingan yang semakin ketat dan perubahan lingkungan bisnis Kuno Kopi. Melihat permasalahan ini, model bisnis Kuno Kopi akan dievaluasi dan dirancang model bisnis usulan. Perancangan model bisnis tersebut dilakukan dengan menggunakan Business Model Canvas (BMC). Beberapa perbaikan penting yang diusulkan dari hasil evaluasi untuk Kuno Kopi adalah melakukan perluasan segmen pelanggan dengan menciptakan program serta produk yang baru, meningkatkan penjualan dengan melakukan peningkatan kualitas dan variasi produk, adanya kenaikan harga pada suatu produk, meningkatkan penggunaan teknologi informasi sebagai media penjualan d
Identifying The Influence of Consumer Purchase Intention Through Live Streaming Shopping: A Systematic Literature Review
Authors: Mindiasari Irtiyah Izzaty , Priharsari Diah , Setiawan Budi Darma , Purnomo Welly
Published: April 2024

The rapid development of technology influences some changes in e-commerce. One of them is the emergence of live-streaming shopping, which combines live-streaming technology with e-commerce, social networking, and entertainment. This shopping format allows viewers to interact with the streamer (seller) and instantly make a purchase with just one touch. Consumers who watch live streaming shopping generally are those who initially have an interest in the offered product. According to prior studies, the presence of live shopping can enhance both customer desire to buy and business sales. To investigate the factors influencing purchase intention in live-streaming shopping, a systematic literature review was conducted. A total of 40 factors were found from 13 selected articles containing live-streaming shopping and purchase intention. Based on these factors, 34 had a positive impact, 2 had a negative impact, and 4 had no significant impact on buyer purchase intention.
Factors Influencing Employee Productivity in Work From Anywhere: A Systematic Literature Review (SLR)
Authors: Fauziyah Neyla Neyla Nuril , Priharsari Diah , Pinandito Aryo , Pradana Fajar
Published: April 2024

Many companies have begun to adopt both ways of working simultaneously or commonly referred to as Work From Anywhere (WFA); it is necessary to model business processes used to evaluate and improve the WFA work system in the future. In modelling business processes, it is necessary to carry out a needs analysis, one of which is to find out what factors affect employee productivity when doing their work. Several research journals related to WFA work productivity factors are still scattered in various journal databases, so it is necessary to unify them from various journals. Therefore, it is necessary to research the grouping of factors and theories that affect the productivity of WFA employees in the Systematic Literature Review (SLR) method. Before grouping, the search criteria and journal search process are determined first. The first search is to identify based on keywords, year of publication, and journal quality. Then continued, the use of Cohen's Kappa method for selection based on the field of discussion and language, abstracts, and contents. In improving the reliability of the library screening results, each selection is made twice (or more) and calculates the value of Cohen's Kappa. The SLR method makes the usually subjective literature study more objective to reduce the researcher's bias. The results obtained were a total of 17 screening journals with a total of 11 factors, namely environment, time efficiency, psychology, health, cost efficiency, employee personality, adequate technology, gender, geographical flexibility, salary, and communication.
العلاقات التجارية العراقية – الفرنسية 1963 – 1979
Authors: محمود عمار شاكر , عبدالحسين غفران باسم
Published: April 2024

إن دراسة تاريخ العلاقات الدولية ما بين الامم يرتبط ارتباطاً وثيقاً في طبيعة الخلفية التاريخية لتلك العلاقة، والتي تنعكس بطبيعة الحال على الاوضاع  السياسية والاقتصادية والاجتماعية، اذ ان تلك الاوضاع تمكن المجتمع من التخلص من الاعباء التي تواجهه  من اجل مواكبة دول العالم .
فضلاً عن ذلك فإن دراسة تاريخ العلاقات الدولية بشكل عام وتاريخ العلاقات العراقية – الفرنسية  بشكل خاص له أهمية كبيرة ليس للمجتمع الأوربي فحسب بل يتعداه إلى المجتمعات العربية والعالمية الأخرى .
وعلى ضوء ذلك الفهم برز الاهتمام بدراسة موضوع " العلاقات التجارية العراقية – الفرنسية 1963 – 1979 "، وقد تمثل عام 1963 بتشكيل حكومة جديدة في العراق برئاسة الرئيس عبدالسلام محمد عارف، وأما التوقف عند عام 1979 فتمثل في نهاية حقبة مهمة من تاريخ العراق المعاصر لتبدأ مرحلة جديدة في العلاقات العراقية – الفرنسية .
إن الإشكالية التي حاولت الدراسة معالجتها في ثنايا صفحاتها، هي ما طبيعة العلاقات التجارية العراقية – الفرنسية ؟ ما هو دور الحكومات المتعاقبة في تطوير تلك العلاقات ؟ ما هو مدى التأثير الناجم عن تغيير النظام السياسي في العراق او فرنسا والمتمثل في التحول إلى النظام الجمهوري على طبيعة تلك العلاقات؟.
التأثيرات العامة لعمارة الأرحاء والطواحين على المجتمعات القريبة منها في بلاد الأندلس
Authors: الجبوري خليل خلف , حمد صقر فرحان
Published: April 2024

ساهم انتشار عمارة الارحاء والطواحين في بلاد الاندلس، وتنوعها الى ظهور مشاكل بين اصحاب الارحاء والطواحين من جهة وبين المزارعين من جهة أخرى، او حتى بينهم وبين من يرغب بطحن حبوبه لديهم، وبين المتعاقدين سواء لكراء الارحاء او بيعها، فكانت هنالك شروط وضوابط حكمت عمارة الارحاء والطواحين ومن يرتبط بهذه العمارة سواء بالعمل، او ارتباط جوار، وقد عالجت كتب النوازل والحسبة، هذه المشاكل في مسائل وردت في متون الكتب، نحاول في هذه الدراسة الاطلاع على تلك المشاكل، لنستوضح منها، اهم تلك المشاكل أولا، ثم لنرى طبيعة معالجتها.
قياس مستوى العدالة الوالدية لدى طلبة المرحلة الثانوية
Authors: صالح عامر مهدي , شهاب منى محمد
Published: April 2024

يستهدف البحث الحالي الكشف عن مستوى العدالة الوالدية لدى طلبة المرحلة الثانوية والتعرف على الفروق المعنوية لمتغير الجنس(ذكور/إناث)لدى عينة من طلبة المرحلة الثانوية , قامت الباحثة ببناء مقياس العدالة الوالدية الذي يتكون من (24) فقرة وقد تم معالجة البيانات إحصائياً وقد طبقت الباحثة المقياس على عينة البحث المكونة من (300)طالب وطالبة وقد أظهرت النتائج وجود فرق دال إحصائيا في مستوى العدالة الوالدية لدى طلبة الثانوية ودلت النتائج على وجود فرق دال إحصائياً في العدالة الوالدية وفقاً لمتغير الجنس(ذكور /إناث) ولصالح الذكور.
Barriers of subject-object interaction in the management of the region
Authors: Kachurova Elena Vladimirovna , Streltsova Tatyana Pavlovna , Medvedev Sergei Vladimirovich
Published: April 2024

The relevance of the study of subject-object interaction in regional management is due to the need to use the constructive potential of management actors and substantiate optimal methods for overcoming the limitations of subject-object interaction of participants in the process. The article attempts to analyze the barriers of subject-object interaction in the management of the region. The paper examines the currently existing approaches to the study of the structural content of the concept of "region". The interaction of public authorities with local self-government bodies is studied, as a rule, either in the context of the problem of differentiation of competence between public authorities, or in the format of understanding the interaction between them. At the same time, the discussion in sociological science about the correlation of regional and municipal interests, about the delimitation, redistribution and transfer of powers between levels of public authority is far from over. The article uses a method of analyzing the processes of subject-object interaction based on the concepts of symbolic interactionism and social subjectivity. Overcoming the limitations of subject-object interaction requires developing effective strategies, improving communication, increasing trust between participants, reducing technical limitations, improving information security, expanding cultural dialogue, as well as developing organizational mechanisms, creating adequate management structures and allocating sufficient resources to implement management tasks. To do this, it is necessary to improve coordination and cooperation between different levels of government and subjects of the region, increase the efficiency of the management apparatus, ensure access to resources and financing, as well as actively develop information and communication technologies for data collection and analysis. It can be argued that the subject-object interaction in the management of the region depends on the political goals of the state, the effectiveness of its management apparatus, the level of development of self-government and resource capabilities due to interaction with the economic market and interference in economic processes.
Priorities of Russia's social policy in the context of global social changes
Authors: Dekhanova Natalia Gennad'evna , Kholodenko Yurii Aleksandrovich
Published: April 2024

The relevance of the topic chosen by the authors is determined by the very fact of global changes in the established social order taking place in the world, which create serious risks for the "welfare state" formed in the West after the Second World War. There is a transformation of the basic principles of the modern welfare state – the principles of social solidarity and social justice, the external and internal conditions for the modern state to perform its social functions are becoming more complicated. The ongoing global social transformations fully affect Russian society, especially since it was Russia that acted as their catalyst. Their socio–economic consequences for Russia are ambiguous. The purpose of this work is to analyze the identification of priorities of social policy in modern Russia in conditions associated with both risks and new opportunities in the context of global social changes. The main methodological basis of the research is theoretical scientific methods and a systematic approach. The interdisciplinary nature of the research within the framework of the identified issues requires the involvement of both the results of sociological research and a significant amount of data from domestic and international economic statistics. It is emphasized that in the field of social policy, which is initially based on the principles of redistribution of resources through the budget system, there are no solutions that provide all Russians with prospects for economic and social well-being. Given the complexity of developing universal government solutions capable of ensuring the realization of the social interests of all population groups, in order to preserve the solidarity of Russians in conditions of instability and resource constraints, it is necessary to identify the right priorities of social policy. Accordingly, the authors analyzed the main problems and prospects in the implementation of the main priorities of the social policy of the modern Russian state: overcoming inequality and poverty, support for the participants of the SVO and their families, family and demographic policy. The authors conclude that when developing and implementing social measures, the Russian state should avoid inflating "bubbles" of social obligations. In addition, it is necessary to keep in mind the limited budget resources and avoid "life on loan". Consequently, the authors substantiate the position on the need to implement the principles of rationality, targeting, and orientation towards solving the most acute social problems of modern Russian society in conditions of limited resources.
Infective Endocarditis Presenting as Endogenous Endophthalmitis and Multiple Cerebral Infarcts
Authors: Abdulla Mansoor C.
Published: April 2024

A 60-year-old housewife as admitted with fever, pain and redness in her right eye for 2 days. She had right eye redness with haziness of the cornea, white fibrinous material in the anterior chamber, and vitreous in the posterior segment. She was evaluated and found to have Endogenous Endophthalmitis (EE) with multiple cerebral infarcts due to methicillin-sensitive coagulase-negative Staphylococcus endocarditis. The patient received intravitreal injections of vancomycin and ceftazidime. She received cefazolin 2 g thrice daily intravenously. The plan of vitrectomy was suggested as per the advice from the ophthalmologist but the relatives opted for conservative management. The patient went into multiorgan failure with disseminated intravascular coagulation and despite all efforts, she succumbed to her illness. Our patient had two extracardiac manifestations of IE together. The presence of any of these manifestations should raise suspicion of infective endocarditis (IE). We report a case of native mitral valve methicillin-sensitive coagulase-negative Staphylococcus endocarditis presenting with extracardiac manifestations. Our case reminds readers to be aware of endocarditis when evaluating patients with extracardiac manifestations like EE.
Imaging findings of thrower’s elbow in a fast bowler: A case report
Authors: Gupta Neeti Ajay , Varshney Ankit
Published: April 2024

“Thrower’s elbow” is a term that has been used to describe a constellation of imaging findings seen in players involved in overhead throwing sports, with maximum literature found on baseball injuries. On reviewing the literature, no cases of thrower’s elbow have been described in fast bowlers or cricketers. This case report describes a fast bowler with lateral elbow pain secondary to impaction injury and capitellar osteochondral lesion and concomitant findings of chronic overuse injury involving the ulnar collateral ligament, which is a part of the thrower’s elbow.
Age estimation using cephalometric analysis of hyoid bone: A radiological study
Authors: Raghav A. Harish , Anbarasu Prema , Subramanian Saravana Kumar , Kaviya K. V. , Annamalai Indra , Thrivikhraman K.
Published: April 2024

Objectives:

The study was done to estimate age using cephalometric analysis of hyoid bone. Age estimation is not only limited to forensic analysis but also to clinical dentistry. Orthodontia, one of the dental specialties, requires age estimation for the choice of treatment planning. Since cephalograms are commonly preferred for estimating age, this simple and novel method would have the added advantage of minimizing radiation exposure for the patient for the requirement of additional radiographs in the estimation of age as in hand wrist radiographs.

Material and Methods:

A total of 234 radiographs with lateral cephalometric projection were employed in the conducted study. The cephalograms were divided based on gender. Cephalometric tracing was done using hyoid bone triangle analysis established by Bibby and Preston in 1981. The triangle is created by the following: Gnathion (Gn), Retro-gnathion (R-Gn), Hyoidale (H), and C3 vertebrae were traced. The Frankfort horizontal plane served as a standardized reference in the study.

Results:

Out of all the dimensions comprising the hyoid bone triangle (C3-H, H-R-Gn, and C3-R-Gn), C3-H values were statistically significant for age estimation at P < 0.001 for both sexes. The study determined that the mean values C3-H and H-R-Gn are 35.66 mm ± 0.44 mm and 40.33 mm ± 0.54 mm, respectively. The hyoid bone is situated in a downward and posterior position.

Conclusion:

Since the certainty of the evidence was high for estimation of age, which is the need of the hour in forensics as well as in dentistry, and there is more demand for cost-effective alternatives, this method will help us reap the benefits.
Physical attributes and performance differences: Server vs. spiker players in men’s doubles sepak takraw
Authors: Gani Abdul , Resmana Dadan , Anugrah Sendy Mohamad
Published: April 2024

Background Problems: Scientific research exploring the comparative analysis of the physical, physiological, and anthropometric characteristics associated with the server and spiker positions in double-category sepak takraw remains relatively scarce. Research Objectives: This study aims to compare the physical, physiological, and anthropometric characteristics between players in the server and spiker positions in the double category of sepak takraw. Methods: The research method used is an observational study with a quantitative approach. This study consisted of 18 male sepak takraw athletes, with 9 athletes each playing as servers and 9 athletes playing as spikers. The statistical analyses were conducted utilizing the SPSS Version 22 application. Findings and Results: The results of this study showed that there were statistically significant differences in body height, aerobic capacity, and leg strength between server and speaker positions (p < 0.05). Meanwhile, there were no significant differences in the variables age, weight, BMI, fat percentage, speed, agility, and flexibility. Dynamic, attractive game requirements and manoeuvres in the air for players in the spiker position have the potential to contribute to superior VO2max values and increased leg muscle strength compared to players in the server position. Conclusion: The conclusion of this study is that athletes in the spiker position show superior anthropometric and physiological attributes compared to those in the server position. Different understandings of the different characteristics associated with each position in the sport of sepak takraw provide new insights and views for coaches and athletes themselves. In addition, it is hoped that this research will have implications for optimizing training programs that adapt to the demands of each position. Furthermore, these findings serve as a reference for talent search events that assist in the identification and development of athletes with optimal physiological profiles for their respective roles in double-category sepak takraw.
Strengthening Social Systems and Social Structure in facing Disaster Threats in Palu City Indonesia
Authors: Harifuddin Harifuddin , Anriani Haslinda B. , Azuz Faidah , Iskandar Abdul Malik , Haris Subhan
Published: April 2024

Disasters are not only caused by environmental vulnerability but also by social system and social structure problems. It requires strengthening the social system and social structure. This study aims to analyze (1) social capital strengthening to face disaster threats (2) strengthening the role of family social institutions to face disaster threats and (3) a model of strengthening the social system and social structure to face disaster threats. This research used Explanatory-Sequential Transformative design. Data collection used observations, in-depth interviews, of surveys and literature studies. The sample was 149 people. The results showed that (1) social capital strengthening occurred through mangrove planting, reforestation, disaster counseling and awareness of disaster sites. (2) strengthening family social institutions through knowledge of monitoring systems, early warning systems and signs and equipment, knowing evacuation routes and safety of self and others and (3) The model of social capital and social structure to strengthen the face of disaster threats is togetherness and cooperation based on the need for security and safety of residents. The research conclusions are: (1) social capital such as togetherness, cooperation, reciprocity and mutual trust are very urgent to unite communities exposed to disasters (2) strengthening family institutions took place through awareness of disaster knowledge and (3) social capital follows the priority of needs with which social capital operates.
The Study of Semi-Continuous Chemical Physical Treatment System for Pollutant Removal in Palm Oil Mill Effluent
Authors: Mohamad Nurul Aqilah , Hamzah Sofiah , Che Harun Mohd Hakim , Ali Asmadi , Rasit Nazaitulshila
Published: April 2024

Effluent from palm oil mill processing is a major concern due its properties and characteristics that highly contributed to water pollution. This study reported on POME treatment by a semi-continuous treatment system consisting of coagulation, sedimentation and filtration processes in the presence of a by-product coagulant (copperas combined with lime). The treatment was conducted for different types of filter medias (FMs): a) FM 1: sand+activated carbon and b) FM 2: sand+ceramic ring) and various retention times (RT) from 1/2 to 2 h. The treatment resulted in different removal efficiencies of turbidity, colour, chemical oxygen demand (COD) and total suspended solids (TSS) for secondary and tertiary POME samples. With semi-continuous treatment, the pollutants in the secondary POME sample decreased, resulting in the removal efficiency of 57.34% for turbidity, 95.16% for colour, 82.08% for COD and 83.23% for TSS. Meanwhile, the results of the tertiary sample were 54.81%, 81.08%, 78.05% and 68.51% for turbidity, colour, COD and TSS removal respectively. The statistical analysis of ANOVA (p-value<0.05) indicated that the data was statistically significant with the FM 1 as a media filter. As a result, a semi-continous chemical-physical treatment system may provide information in efficient POME treatment.
Investigation of Heavy Metals Contamination in Indian Aquaculture Shrimp -Litopenaeus vannamei
Authors: Venu Babu Katari , Veeerendra Kumar B.
Published: April 2024

The expanding aquaculture industry in India has raised concerns about potential environmental contaminants, particularly heavy metals in seafood products. This study aims to assess the presence and levels of heavy metals in Indian aquaculture shrimp, focusing on the widely cultivated species Litopenaeus vannamei. Shrimp samples were collected from diverse aquaculture sites across India and rigorous analytical techniques were employed to quantify the concentrations of various heavy metals. Preliminary findings indicate the potential presence of mercury (Hg), lead (Pb), cadmium (Cd), arsenic (As), copper (Cu), zinc (Zn), chromium (Cr) and nickel (Ni) in the shrimp tissues. The study explores potential sources of contamination including water quality, sediments and feed to ascertain the pathways through which these heavy metals enter the shrimp cultivation environment.
Purification of epothilone B using nylon-6-resin column and silica gel column chromatography
Authors: Ho Myong-chol , Kim Gwang-su , Ri In-chol , Jo Gyong-hak
Published: April 2024

Epothilone B is a cytotoxic active component stabilizing microtubules as secondary metabolite produced by myxobacterium Sorangium cellulosum, therefore it exhibits a high antitumor activity. In this study, the nylon-6-resin column and silica gel column chromatography were employed to purify epothilone B. After purification of epothilone B sample, the purity and yield were 95.9% and 67% respectively.
OVERVIEW OF TECHNOLOGIES AND MODERN TRENDS IN THE PRODUCTION OF PASTILE PRODUCTS
Authors: КИРИЧЕНКО А.В. , ЛОБАНОВ В.Г. , НАЗАРЬКО М.Д.
Published: April 2024

Пастильные изделия – диетический десерт на основе фруктов, который пользуется широким спро- сом среди населения России. Проведен обзор существующих технологий производства пастильных изделий, оценена их перспективность, проанализированы рецептуры и технологические аспекты, влияющие на качест- венные показатели. Глубина литературного поиска по опубликованным результатам исследований российских и зарубежных ученых составила 10 лет. Выявлено, что производители стремятся снизить содержание саха- ра в продукте или заменить его полностью во избежание сокращения числа потребителей. Установлено, что тех- нологию изготовления и качество пастильных изделий и пастилы совершенствуют разными способами: измене- нием рецептуры, температурного режима и длительности сушки, а также добавлением ингредиентов, несущих функциональную нагрузку. Отмечена целесообразность и перспективность усовершенствования рецептуры пастильных изделий, их обогащение полезными веществами для поддержания и улучшения здоровья людей.

Pastila products are a fruit-based dietary dessert that is in great demand among the Russian population. A review of existing technologies for the production of pastille products was carried out, their assessment and prospects were given, recipes and technological aspects affecting quality indicators were analyzed. The depth of the literature search for published results of research by Russian and foreign scientists was 10 years. It has been revealed that manufacturers are striving to reduce the sugar content in the product or replace it completely in order to avoid reducing the number of consumers. It has been established that the manufacturing technology and quality of pastille products and marshmallows are improved in various ways: by changing the recipe, temperature conditions and drying duration, as well as by adding ingredients that carry a functional load. The feasibility and prospects of improving the formulation of pastille products, their enrichment with useful substances to maintain and improve people’s health are noted
Przegląd programów komputerowych dedykowanych projektowaniu układów elektronicznych. Charakterystyka środowiska GeckoCIRCUITS
Authors: Stasiak W. , Czarnowski I.
Published: April 2024

Rozwój technologii wytwarzania układów elektronicznych, a także coraz szerszy zakres ich zastosowań, prowadzi do zapotrzebowania na rozwiązania wspomagające ich projektowanie. W artykule dokonano przeglądu wybranych rozwiązań dedykowanych projektowaniu układów elektronicznych. Skoncentrowano się na rozwiązaniach opartych na projektowaniu komputerowym, porównując wybrane środowiska programowe. W szczególności uwagę poświęcono środowisku GeckoCIRCUITS, które omówiono na przykładzie projektu układu przekształtnika podwyższającego napięcie (boost converter).
Zawartość białka w różnych rodzajach serów dostępnych na rynku
Authors: Brodziak A. , Król J. , Ryszkowska-Siwko M.
Published: April 2024

Celem pracy było oznaczenie zawartości białka ogólnego w wybranych serach podpuszczkowych dojrzewających i topionych oraz produktach seropodobnych dostępnych
w sieci detalicznej Lublina. W badaniach łącznie uwzględniono 23 rodzaje serów wyproduko­wanych z mleka krowiego, w tym 16 serów podpuszczkowych dojrzewających i 4 topione,
a także 3 produkty seropodobne. W każdej próbce oznaczono zawartość białka przy użyciu metody Kjeldahla. Spośród wszystkich badanych serów sery topione stanowiły najuboższe źródło białka (od 8,07 do 9,06%), natomiast sery podpuszczkowe dojrzewające zawierały najwięcej tego składnika, a zwłaszcza jeden ser Ementaler (29,20%). W żadnym przypadku nie stwierdzono istotnej różnicy między deklarowaną a uzyskaną zawartością białka, co świadczy o wiarygodności producentów serów w odniesieniu do znakowania tych wyrobów dotyczącego zawartości omawianego składnika.
Diagnostyka techniczna uszkodzeń czterosuwowego morskiego silnika Sulzer 3AL 25/30 z wykorzystaniem zmian stosunku absolutnego ciśnienia sprężania do absolutnego ciśnienia doładowania
Authors: Drewing S.
Published: April 2024

W artykule przedstawiono wyniki badań wpływu wprowadzanych uszkodzeń (układu wtryskowego umiejscowionego w środkowym cylindrze silnika (cylindrze nr 2) lub w obrębie układu zasilania powietrzem silnika dla wszystkich cylindrów) czterosuwowego morskiego silnika Sulzer 3AL 25/30 na zmianę stosunku absolutnego ciśnienia sprężania do absolutnego ciśnienia doładowania, nazywanego współczynnikiem βp.
Analiza porównawcza metod pomiarów wydłużenia w czasie wykonywania statycznej próby rozciągania metali
Authors: Hajdukiewicz G.
Published: April 2024

W artykule przedstawiono porównanie wyników pomiarów wydłużenia próbek ze stopu AlMg3, uzyskanych dwiema metodami w czasie wykonywania próby rozciągania metali w temperaturze pokojowej zgodnie z normą PN-EN ISO 6892-1:2010 [Zwick&Roell 2015]. Metoda 1 – określenie wydłużenia za pomocą ekstensometru wideo firmy Zwick&Roell typ VideoXtens. Metoda 2 – określenie wydłużenia na podstawie podziału początkowego długości pomiarowej.
Projekt noszy przystosowanych do transportu poszkodowanego w warunkach morskich
Authors: Jursza P.
Published: April 2024

W artykule przedstawiono projekt noszy przystosowanych do transportu poszkodowanego w warunkach morskich, których konstrukcja pozwala funkcjonować w warunkach: falowania, silnego wiatru oraz destrukcyjnego oddziaływania środowiska morskiego na poszczególne elementy noszy. Projekt ma na celu zwiększenie bezpie­czeństwa osób poszkodowanych na morzu.
Algorytm i aplikacja w programie EXCEL dla krokowej aproksymacji danych drogą rozwiązania układu równań metodą Gaussa
Authors: Polanowski S.
Published: April 2024

W artykule zaprezentowano algorytm oraz aplikację w programie Excel krokowej aproksymacji danych metodą najmniejszych kwadratów dla modelu wielomia­nowego, liniowego względem współczynników. Pod pojęciem wielomianu aproksymującego rozumiany jest wielomian uogólniony, którego jednomiany są dowolnymi liniowo nieza­leżnymi funkcjami. Współczynniki wielomianu aproksymującego są wyznaczane metodą Gaussa. Specjalnie utworzona tabela informacyjna umożliwia optymalny dobór jedno­mia­nów oraz budowanie modelu krok po kroku, drogą włączania do modelu jednomianów najbardziej zmniejszających sumę kwadratów odchyleń. W tej tabeli wskazano sumę kwadratów odchyleń, odchylenia skrajne oraz wartości odchylenia standardowego na każdym kroku aproksymacji. Stanowi to podstawę do podjęcia decyzji o zakończeniu aproksymacji, a także umożliwia wyłonienie punktów o nadmiernych odchyleniach.
Alternatywne rozwiązania dla optymalizacji procesu zagazowania zbiorników ładunkowych po inertowaniu w odniesieniu do PSA (Pressure Swing Adsorption) i technologii membranowej
Authors: A. Wieczorek
Published: April 2024

Artykuł stanowi wprowadzenie do rozwiązania problemu przeprowadzenia
operacji gassing-up w sposób bardziej efektywny w odniesieniu do znacznych ilości
„traconego” ładunku. W pierwszej kolejności opisano wpływ obecności azotu na pracę
obiegu. W dalszej części przeanalizowano dostępne metody usunięcia azotu podczas
operacji gassing-up. Opisano metody PSA (Pressure Swing Adsorption) oraz membrany
i przeanalizowano je w odniesieniu do etylenowców.
Operating Parameters Effect on Adsorptive Desulphurisation Process of Diesel Oil
Authors: Kalam M. F. , Schütz W.
Published: April 2024

The vision of this research was to investigate the removal of thiophene sulphur compounds from high sulphur content (1.3%) diesel oil by adsorptive desulphurisation process using powdered activated carbon. The adsorptive desulphurisation process was performed under three different operating conditions such as amounts of activated carbon (g), treatment temperatures (°C) and stirring time (minutes). Results showed that these operating parameters influence the removal of sulphur compounds from diesel oil. The maximum desulphurisation obtained was 76.16%.
Preliminary Investigations of Induction Motor Supplied with Voltage Containing Subharmonics Using Field and Field-circuit Methods
Authors: Gnaciński P. , Hallmann D.
Published: April 2024

This work is devoted to preliminary investigations concerning the effect of an inertia moment and load-speed characteristics on currents, power losses and windings temperature of an induction machine supplied with voltage containing subharmonics. The results of numerical simulations are presented for a totally-enclosed fan-cooled cage induction motor of rated power 3 kW. The computations were carried out with a field method and a hybrid field-circuit method. The results of preliminary investigations show that load properties may have significant influence on currents, power losses and windings temperature of an induction machine under considered power quality disturbances.
Study of Ship Accident Factors and Ship Routes Correlation
Authors: Iskandar S. , Hasugian S. , Fatimah S.
Published: April 2024

The sailing safety was a very important issue that had to be solved in Indonesia. There were accidents causing victims and material losses caused by ship operator’s ignorance and less awareness on safety. The ship operator was responsible for technical matters and to guide human resources. The aim was to map the correlation between ship accident causes and particular routes. The research used the Pearson Product Moment correlation trial to map correlation between accident events to particular routes. The data used was decision report of shipping court published in 2015–2016. Then, the causes were grouped and the result showed that human factor is the main factor of accident. The accident factor had the high correlation with the location where the accident happened.
Stan obecny i perspektywy rozwoju Portu Elbląg
Authors: Salomon A.
Published: April 2024

W artykule przedstawiono stan obecny portu Elbląg (głównie jego lokalizację, infra- i suprastrukturę) oraz perspektywy rozwoju, związane głównie z przeprowadzeniem przekopu przez Mierzeję Wiślaną, budową mostu w Nowakowie oraz regulacją i pogłębieniem toru podejściowego do portu.
Ocena mocy cieplnej aparatów wymiany ciepła siłowni parowych dla różnych stanów ich użytkowania w aspekcie degradacji termicznej
Authors: Hajduk T.
Published: April 2024

Odkładające się osady na powierzchniach wymiany ciepła wymienników ciepła w okrętowych i lądowych siłowniach parowych są przyczyną m.in. wzrostu spiętrzeń temperatur oraz związanego z tym pogorszenia stopnia próżni w skraplaczach. Proces degradacji termicznej prowadzi zawsze do zmniejszenia strumienia cieplnego transportowanego przez wymienniki, a w końcowym efekcie do zmniejszenia sprawności danego układu cieplnego. Okazuje się jednak, że utrata mocy cieplnej wymiennika ciepła nie zależy tylko od wartości samych oporów ciepłych osadów, ale jest również ściśle skorelowana z atrybutami cieplnymi wymiennika ciepła, tj. wartościami współczynnika przenikania ciepła w różnych stanach eksploatacyjnych wymiennika. W artykule opisano powyższe zjawiska oraz zaprezentowano rezultaty własnych badań eksperymentalnych.
Modyfikacja układu do pomiaru przebiegu ciśnienia spalania okrętowego silnika tłokowego Sulzer AL25/30
Authors: Wysocki J.
Published: April 2024

Artykuł przedstawia wybrane problemy analizy przebiegów ciśnień cylindrowych w okrętowych silnikach tłokowych. Prawidłowo sporządzony i przeanalizowany wykres indykatorowy pomaga w formułowaniu wniosków diagnostycznych, za pomocą których można doprowadzić do optymalnej, pod kątem ekonomicznym i ekologicznym, regulacji silnika okrętowego. Pomiary ciśnień cylindrowych zaliczane są do trudnych, a także obarczonych wieloma błędami, dlatego też głównym tematem artykułu jest przedstawienie nowej koncepcji pomiarów przebiegów ciśnień cylindrowych.
Evaluation of Selected Microbiological Quality Parameters of Fruit Mousses
Authors: Stankiewicz Jadwiga , Płotka Paulina
Published: April 2024

The changing pace of life, ways of spending free time, and the search for consumer products of specific nutritional properties force food producers to introduce products providing the expected nutritional value. The demand for low-processed food, ready for consumption and at the same time microbiologically safe, is linked to the growing nutritional awareness of consumers. Fruit mousses, intended both for child and for adult consumers, match this direction of convenience product market development. The purpose of this study was to evaluate selected microbiological characteristics of fruit mousses commercially available in the Tri-City of Poland. A total of 24 fruit mousse samples were tested, of varied compositions, made by 4 different producers. The total count of aerobic mesophilic bacteria and the count of filamentous fungi and yeasts were determined in the test material. The analyses were conducted by the traditional plate method, on the day of purchase and after being kept in cold storage for 24 hours, in accordance with the manufacturer's recommendations. A total of 12.5% of the mousse samples tested on the day of purchase failed to meet the microbiological purity criteria for aerobic mesophile and fungus TMC.
Apple Pulp Inhibition Properties Concerning Staphylococcus Aureus ATTC 25923 Populations
Authors: Steinka Izabela
Published: April 2024

The purpose of this study was to evaluate S. aureus inhibition by phytoncides present in apple pulp. The apple fruit used in the tests were of the cultivars: Grey Rennet and Cox's Orange Pippin. The behaviour of the staphylococcus population in its interaction with apple pulp was tested after 30 and 120 minutes of storage at 37oC. S. aureus growth was determined on an RPF Baird-Parker substrate. The tests demonstrated biocidal properties of Grey Rennet pulp against S. aureus. The other apple cultivar displayed weak biostatic properties, reducing the staphylococcus population by only 22.6% after two hours of incubation.
Practical aspects of using radar in maritime navigation with analysis of its potential errors and limitations
Authors: Rutkowski Grzegorz
Published: April 2024

In this article, the author will try to explain the basic principles of the practical focus of using radar in maritime navigation, analysing its potential errors and limitations. An attempt will also be made to describe the basic seamanship practice of how to set up the radar, determine the radar blind sectors, calculate the radar position accuracy, generate a basic anti-collision radar report, calculate CPA, TCA, BCR, BCT etc., and verify the effectiveness of a trial anti-collision manoeuvre by using the radar in the different radar modes when navigating in restricted sea areas.
Project of universal test stand for underwater vehicles’ thrusters
Authors: Dudek Filip , Lisak Patrycja , Makulec Piotr , Małachowski Tomasz , Piekorz Krzysztof , Przybylski Kacper , Borkowski Bartłomiej
Published: April 2024

This article presents the design and implementation of the next stage of research conducted as part of the design and construction of an underwater inspection robot. Its purpose was to create a universal test stand for testing the parameters of underwater robots’ thrusters. Factors taken into account when constructing the station were, among others, the possibility of cavitation and its impact on the strength of the device's thruster system, as well as noise pollution of the underwater environment. The sensor system in which the dynamometer is equipped will automatically acquire a number of readings that will allow the design of propulsors to be tested taking into account many parameters. The collected data is sent and analysed using microcontrollers and dedicated, custom-written software. The proposed solution will accelerate and automate research work and allow quick modifications of the mathematical model for describing the underwater vehicle propulsion module.
Evaluation of ships turnaround time in port with approach channel
Authors: Kuznetsov Alexander L. , Kirichenko Alexander V. , Semenov Anton D.
Published: April 2024

The operation efficiency of a port with an approach channel to a great extent depends on decisions made by the port authority and harbor master over the channel scheduling. Currently there are no formal methods which allow to evaluate the influence of the channel schedule on the ship turnaround time, especially when the throughput capacity is restricted. The relevant system has a complex structure that rules out common mathematical methods. The paper studies some typical structures of these systems and offers an approach for developing adequate simulation models. These models enable the conduct of comparative studies of different variants of approach channel scheduling and serve as a toolkit to support the decision-making procedure for harbor master and port operators.
Influence of voltage subharmonics on induction motors of various efficiency classes
Authors: Pepliński Marcin
Published: April 2024

Power quality disturbances related to voltage waveform distortions and effective value deviation are common in power systems. Apart from higher harmonics, subharmonics and interharmonics may also appear in voltage waveforms. The presence of the above-mentioned disturbances causes additional power losses and an increase in thermal loads on induction motors. In this paper, the results of the study of the influence of subharmonics present in voltage waveform on the currents in the investigated induction motors of standard efficiency class – IE1 and high efficiency class – IE3, are presented.
Modeling of a three-point bend test of a beam made of AW 5083 alloy
Authors: Żuk Daria , Hajdukiewicz Grzegorz
Published: April 2024

The paper describes the modeling of a three-point bend test carried out on a beam made of the AW 5083 aluminium alloy performed using the finite element method. The three-point bend test was carried out experimentally in accordance with the current standard PN-EN ISO 7438:2016-0. During the test, the values of the beam material constants, such as Poisson number and Kirchoff modulus which were necessary for the modeling were determined. The results obtained in the test allowed for modelling using software based on the finite element method, such as MSC Patran and Abaqus software. The test modelling in the software was performed taking into account the beam geometry, the material properties, the boundary conditions, and the load. In order to verify the model, a comparative analysis was performed of the values of the bend of the beam’s central axis obtained from the experiment and the values obtained after the FEM modeling and those obtained by the analytical method.