{"title":"Experimental Investigation of Main Journal Bearing Performance in Marine Applications with Heavy Loads at Slow Speeds Utilizing Different Grade Oils","authors":"","doi":"10.59660/46728","DOIUrl":"https://doi.org/10.59660/46728","url":null,"abstract":"Heavy loads are known to be among the most critical operational factors affecting the behavior of the lubricating oil film within journal bearing related to marine slow speed diesel engines. In light of the fact, a comprehensive investigation was carried out to examine the performance of journal bearing under heavy loads resulting from increased maximum pressure within the combustion chamber. Further, the research test trial procedures have been extended to cover the different speed ranges of 40 rpm, 85 rpm and 105 rpm, as corresponding to the engine loads (40 %, 85% and 100 % respectively), together with the different oil grades of 20W50, 5W40 and 0W30. Universal Journal Bearing Test Rig (UJBTR) was utilized for conducting the experimental test trials due to its capability to contain versatile variations regarding the key operational factors. Experimental test trials basically based on tracing the changes in the oil film pressure distribution and the maximum oil film pressure values, have given insight into the behavior of heavy-loaded journal bearing of diesel engine related to ships. Based all the experimental test trials under optimal and heavy load conditions, oil grade 5W40 was concluded to provide the most optimal operating conditions for all tested speed ranges.","PeriodicalId":129796,"journal":{"name":"AIN Journal EN","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116847654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Impact of Dry Port on Seaport Competitiveness","authors":"","doi":"10.59660/46722","DOIUrl":"https://doi.org/10.59660/46722","url":null,"abstract":"Ports play an important role in connecting individuals in need of logistics services with organizations that provide logistics services. Rather of being merely transshipment hubs. Ports have recently evolved into integrated logistics centers with a continuous transport chain, with these developments primarily relying on the supply chain systems of major port operators. Though changes impact terminal handling traffic, rising quantities have increased job pressure, as well as congestion levels and dwell periods in terminal areas. The dry port model relies on a seaport which is directly connected to inland intermodal stations, where freight may be rotated immediately to the seaport in intermodal loading units.\u0000This research investigates the influence of vessel growth on port competitiveness and investigates integration between seaports and dry ports to counteract the huge increase in ship size at seaports. To achieve this goal, a survey was conducted to measure the relationship between dry ports and seaports. This paper also illustrates how the vessel expansion is associated with reduced operational efficiency, congestion, limited capacity and infrastructure support, outdated guidelines for existing port development, and the urgent need for additional investment in spatial development, and human resource development.","PeriodicalId":129796,"journal":{"name":"AIN Journal EN","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123916342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
AIN Journal ENPub Date : 2023-07-01DOI: 10.59660/ar.46724
{"title":"التحكيم بالإحالة في سندات الشحن البحري","authors":"","doi":"10.59660/ar.46724","DOIUrl":"https://doi.org/10.59660/ar.46724","url":null,"abstract":"يعد شرط التحكيم بالإحالة إحدى صور إتفاق التحكيم التي عول عليها المشرع المصري، وكثيراً من الاتفاقيات الدولية والوثائق الأخرى، ويعد السبب في إعمال التحكيم بالإحالة هو الرغبة في التوسع في إعمال نطاق التحكيم وسرعة الفصل في الخصومات، لاسيما إذا ما تعلق الأمر بمنازعات التجارة البحرية بصورة عامة، وسندات الشحن البحري بصورة خاصة. لذلك كانت الإشكالية من جانب تدق بصدد الإحالة ذاتها ومتى تعد كافية حتى ينتج شرط التحكيم في الوثيقة المحال إليها أثره، وهل جاء موقف المشرع المصري بدد شروط الإحالة كافياًمن عدمه. الأمر الذي أقمنا معه إعمال المنهج التحليلي، وصولاً إلى عدداً من النتائج والتوصيات الهامة، إذ من أهمها قصور موقف المشرع المصري في تتظيم شروط الإحالة، الأمر الذي حد بنا إلى الرغبة في إعمال تدخل تشريعي يتناول معالجة هذا القصور.","PeriodicalId":129796,"journal":{"name":"AIN Journal EN","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125160212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"شرط الأهلية وأهميته في اتفاق التحكيم البحري\u0000دراسة تحليلية","authors":"","doi":"10.59660/46725","DOIUrl":"https://doi.org/10.59660/46725","url":null,"abstract":"تعد الأهلية من قبيل النظريات الكبرى المعول عليها في نطاق الأشخاص، يستوي في ذلك الأشخاص الطبيعيين وكذلك الاعتباريين، سواء كانت عامة أو خاصة. وتلعب الأهلية دورًا جوهريًا في نطاق إبرام اتفاق التحكيم، فلا يمكن إبرام اتفاق التحكيم في المعاملات البحرية دون أن تتوافر أهلية إبرامه، لذلك كانت الإشكالية من جانبنا تدق بصدد مدى التنظيم الذي أقامه المشرع فيما يخص أهلية إبرام اتفاق التحكيم في نطاق قانون التحكيم، لذلك وبإعمال أسس المنهج التحليلي هدفنا لأجل إلقاء الضوء على أهلية الشخص الطبيعي، وكذلك المعنوي ولكن العام والأجهزة التابعة له حصرًا، وتوصلنا على ضوء المتقدم إلى عددًا من النتائج والتوصيات أهمها في هذا الصدد، أن المشرع المصري في قانون التحكيم لم يُعين لفظ الأهلية ضمن المصطلحات القانونية الذي ينظمها القانون، على الرغم من جوهرية هذا المصطلح، الأمر الذي يدعو إلى تدخل تشريعي لمراعاة وجوه التعديل اللازمة.","PeriodicalId":129796,"journal":{"name":"AIN Journal EN","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115591325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Red Sea Fisheries - Threats and Proposed Solutions","authors":"","doi":"10.59660/45115","DOIUrl":"https://doi.org/10.59660/45115","url":null,"abstract":"The global oceans and seas are broadly balkanized into 66 large Marine Ecosystems (LMEs), and the Red Sea is the number 33 of these LMEs. Moreover, they provide job opportunities for millions of people and generate about three-quarters of the world fish production annually. The Red Sea (LME#33) is believed to be the saltiest and warmest sea among these LMEs.\u0000The main aim of this paper is to suggest policy solutions as proper planning strategies for the Red Sea countries to restore the depleted naturally fish stocks and to sustain natural fisheries stocks to achieve socio-economic and environmental goals in the coming years.\u0000The methodology used in this research is a merge of descriptive and analytical approach. The analytical research focusses on the main causes and losses that led to depleting natural fisheries stocks in the Red Sea such as (overfishing, Illegal, Unreported, and Unregulated (IUU) fishing, coastal development, and climate change). This research analyses the data collected from the literature and the SWOT analysis outcomes to investigate the current status-quo and to propose alternative solutions for the natural fish stock depletion in the Red Sea.","PeriodicalId":129796,"journal":{"name":"AIN Journal EN","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117165042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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