Types Of Vessels Research Articles

Imaging of Venolymphatic Malformation in a Child Extending from Inguinoscrotal Region to Thoracic Region: Case Report with Review of Literature

Abstract Vascular malformations (VM) are structural malformations of vascular development causing soft-tissue abnormality with functional and esthetic impairment. They are named by their predominant vessel type as arterial, venous, lymphatic, or mixed types. VM extending from the inguinoscrotal to the thoracic region are extremely rare presentation. We present a rare case of veno-lymphatic malformation in the inguinoscrotal region, which is extending superiorly up to the right thorax in a 14-year-old male child who presented with a large swelling in the bilateral inguinoscrotal region and reddish–brown colored skin patches over the right anterior and lateral thoracoabdominal region. The diagnosis was suggested by ultrasonography and confirmed by computed tomography and magnetic resonance imaging.

Clinico-dermoscopic study of inflammatory dermatoses: a hospital based cross sectional study

Dermoscopy is a noninvasive, fast, and reliable diagnostic technique used to magnify and visualize structures on and beneath the skin surface which is difficult to observe by naked eyes, creating a link between macroscopic clinical dermatology and microscopic dermatopathology. The purpose of this study is to evaluate and compare the dermoscopic features of common inflammatory dermatological conditions of skin sharing similar clinical presentation according to the available literature data. All dermoscopic findings were studied using a handheld pocket dermoscopy (Dermlite DL1) with high magnification. Variables used for dermoscopic evaluation were divided into vascular and nonvascular features and specific clues. Descriptive analysis and Chi square test were used where appropriate and p < 0.05 was considered statistically significant. There were a total of 205 patients enrolled in the study. The most common clinical diagnosis was psoriasis seen in 42.0%, lichen planus in 13.0%, contact dermatitis in 12.0%, polymorphic light eruption 7.0%, seborrheic dermatitis 4.0%, discoid lupus erythematosus 5.0%, pityriasia Rosea 5.0%, urticaria 5.0% and others 7.0%. Dermoscopic vascular changes were seen as regular in 52.0% and irregular in 46.0%. The most common type of vessels observed were dotted in 70.0%, linear in 7.0%, and coiled in 2.0%. Non-vascular changes were seen in 61.0%. The commonest type of scales were whitish scales seen in 63.0%. Pigmentary changes were seen in 19.0%. The commonest type of vessels observed were dotted vessels (p value 0.000) in most inflammatory diseases. Features like wickham striae were characteristic of lichen planus (p value 0.000). The characteristic dermoscopic features of various inflammatory disorders with the help of a dermoscope is easy to perform in outpatient without any invasive method and also helpful in guiding management of the patients with follow-up.

Analiza nedostataka prema pariškom memorandumu o nadzoru država Luka

Substandard ships pose a significant threat to human life and the environment. Therefore, detecting deficiencies and removing such vessels from service is necessary, which is one of the port state control (PSC) inspection tasks. In addition, the role of PSC inspection is to improve safety at sea and in ports. To be up to the task, the States jointly created several memoranda to fight against substandard ships. The most frequent deficiencies detected on ships during Paris Memorandum of Understanding (MoU) PSC inspections are analyzed in this paper. The analysis was made according to factors such as type of vessel, flag and the category to which deficiency belongs. Results revealed that most frequent deficiencies detected on ships, regardless of type or flag, come from International Safety Management (ISM) and fire protection. Furthermore, it is found that among the ten most frequent deficiencies, three are from the navigation safety category. Therefore, corrective actions to improve safety at sea are needed and presented.

Comparative life cycle impact assessment of offshore support vessels powered by alternative fuels for sustainable offshore wind operations using machine learning

Offshore Anchor handling tug supply (AHTS) vessels, a type of offshore support vessel, are critical for the operations related to handling anchors of offshore structures, oil rigs, and wind turbines, towing them to remote deep-sea locations, and securing them in place. Amidst growing concerns regarding the environmental footprints of carbon-based fuels and impending carbon taxation, the International Maritime Organization, policymakers, classification societies, shipping firms, and stakeholders are seeking cleaner alternatives. LNG (Liquefied natural gas) and Green ammonia as energy vectors are considered among the top contenders for future clean alternatives for offshore vessels. This study evaluated the environmental performance of newly built AHTS vessels powered by LNG and Green ammonia as marine fuels designed for offshore operations. This environmental impact assessment study uses IPCC and Environmental footprint methodologies. Considered broad impact groups: Global warming, human toxicity, eutrophication, ecotoxicity, and atmosphere-related impacts, and analyzed the process impacts. This study uses Supervised machine learning algorithms such as the Random forest, Decision tree, and XGBOOST models for environmental performance evaluation and prediction. The study reveals that the recently manufactured AHTS vessel, utilizing conventional fuels like Heavy fuel oil, Marine diesel oil, and LNG, exhibits significantly increased GTP 100 and GWP 100 emission levels per tonne-kilometer when compared to green ammonia, with a 44 % and 10.6 % rise compared to Heavy fuel oil, respectively. Furthermore, the XGBOOST regression model outperformed the Random forest and Decision tree models in predictive accuracy for GWP 100. It is analyzed and proposed that effectively managing unsustainable processes would minimize environmental footprints and reduce carbon, nitrogen oxide, LNG, and ammonia-based emissions.

Application of Lasers in Vascular Anomalies.

Laser technology has significantly improved giving better results, which in turn has led to an increase in the indications for laser therapy. Vascular anomalies comprise vascular tumors and malformations. They are classified according to the type of vessels involved including arteries, capillaries, postcapillary venules, veins, lymphatic vessels, and a combination of two or more of these. Laser needs a chromophore to get absorbed and act. Hemoglobin, both oxy and deoxy, is one of the naturally occurring chromophore that is abundant in vascular lesions. Therefore, in most of the vascular lesions, lasers can bring improvement of a varying degree, while for superficial hemangiomas and port wine stain (PWS) laser treatment is now the standard of care. However, even though there is increase in the use of lasers in clinical practice, many surgeons are still unaware of its versatility and they are unsure about its safety. This article provides a brief overview of laser and intense pulsed light (IPL) technology, and describes the key principles in using these energy sources in vascular malformations. Readers are also familiarized with possible adverse effects and measures to prevent and treat them.

Perception of Yachts by Non-Owners

Yachts are vessels built for especially recreational cruises or racing using sails or engines. These types of vessels are built for private use or charter activities and are generally associated with wealth, luxury, better living conditions, society, and of course remarkable expenses while operating. In literature, there are limited studies concerned with the yachts in terms of their perceptions. This study tried to figure out the perceptions of yachts by non-owners. A face-to-face survey consisting of 28 questions (yes/no, priority order, and Likert scale) was performed for 251 participants. According to the results, the yacht was perceived as a luxury vessel that shows better living rather than necessity. Furthermore, the length of the yacht, especially when the super or mega-yachts were considered, was interpreted as an indicator that shows the social belonging and economic purchasing power of the surveyed people. Composite is the lesser-known construction material that attendees preferred while steel and wood are the first two. The Interior of the yacht attracts more attention than the exterior while imported materials or goods are the prominent choice for interiors. Functionality and safety were identified as two of the main properties of the yacht.

Solving the problem of optimizing fishing activities

A model for optimal planning of fishing activities has been proposed. It includes the formation of a biological component (a set of fishing objects considered taking into account their distribution over fishing zones) and a technological component (a set of fishing vessels and fishing technologies). On the basis of these two components, the technological chain "field object – production vessel – production technology" is formed. For each type of fishing vessel, it is permissible to use a certain type (or several types) of fishing technologies that are directly related to fishing objects, their catch can be carried out only using a certain production technology. Particular attention in the model is given to the problem of determining the optimal quantitative composition of the production fleet. The optimization criterion is the minimization of the costs associated with the fishing activities of specialized vessels, provided that the specified volumes of catch are achieved. The costs are directly related to the types of vessels used, fuel costs depending on the vessel's home port and the time required for loading and unloading operations. In the optimization problem, estimates of the weighted average daily catch and fishing time are used to account for most of the costs associated with the extraction of aquatic biological resources. The optimization algorithm is considered on the example of the Commander squid (Berryteuthis magister) in the North Kuril zone. In the area under consideration, squid production is carried out using trawl technology. The main types of vessels engaged in squid harvesting are large-capacity and medium-capacity vessels.

A multi-criteria approach for comparing alternative fuels and energy systems onboard ships

This paper aims to present the upgrade of the Helper for Energy Layouts in Maritime applications (HELM) software tool, developed by the authors to compare traditional and innovative systems for energy production and storage onboard maritime vessels. The algorithm adopts a multi-criteria method and it carries out the analysis on a large and updated database of market solutions. A wide range of maps is implemented in the tool, correlating costs, volumes, weights, emissions and fuel environmental hazards with energy demand, applicative scenario and vessel type. The equations implemented in the software and the algorithm employed to evaluate and compare the technologies are reported. In this work, four different vessels are investigated, namely: (i) a small sail yacht; (ii) a small passenger ferry for inland water navigation; (iii) a large cruise ship; (iv) a large container ship. For each case study, the choice of the best solution is performed, considering the constraints, the inputs and the single parameters: in all cases, the solution chosen corresponds to the real one installed on board or to a solution that is going to be installed. It is worth noting that the multi-criteria analysis has a general approach, allowing to give preliminary information on the best energy system solution, also to comply with the application requirements (i.e. pollutant emissions in ports and restricted areas).

Method for the formation of algorithm elements for designing a vessel for the subsea technical operations support using a database of similar vessels

The elements of the algorithm for designing vessels for underwater technical work such as formation of the power station of the designed vessel are considered in the paper. These are formation of the power station of the designed vessel, selection and installation of crane and diving equipment, hardware intended for use on a vessel of manned submersibles and determining the dimensions of mobile operation equipment intended for future installation on a vessel being designed to perform appropriate technological operations on the sea shelf, based on the data of a group of the same type vessels. The algorithm is intended for definition of the main dimensions of the designed vessel, namely, a number of the installed diesel generators and ratios of total power of the power station with a width, loading capacity of the crane and power of a propulsive complex of the designed vessel. Systematization of the used crane equipment as for performance of cargo and underwater and technical works, and for hardware service is performed. Systematization of a diving complex, hardware and the manned submersibles assumed to use on the vessel is also performed. The relation between the dimensions of the main deck and ship structures necessary for the installation of mobile technological equipment and complexes using databases of the same type of vessels is systematized. Using the existing design experience and a database of ships of similar purpose, a formula that allows, as a first approximation, to estimate the sizes of the power plant, load-lifting devices and diving equipment planned for installation on the designed vessel that provides service to submersibles of any type has been compiled.

Late Roman glazed pottery from Aquincum

This study aims to present a part of the already evaluated Late Roman glazed pottery record from Aquincum and, thus, provide a typological classification based on our current knowledge. It is important to note that the present study does not include the complete – mostly fragmentary – ceramic record, comprising thousands of objects, but focuses only on eighty artefacts representing traditional types. The current evaluation concerns vessel types used on a daily basis: containers (jugs, pitchers, and bottles), serving (bowls) and drinking vessels (mugs, cups, drinking cups), mortaria, and simple lamp variants. In addition to presenting the finds, the study provides a brief general survey of glazed pottery and other Late Roman ceramic vessel types with lead glazing. In addition to presenting the finds, the study provides a brief general survey of glazed pottery and other Late Roman ceramic vessel types with optional glazing.

A Review of On-Board Carbon Capture and Storage Techniques: Solutions to the 2030 IMO Regulations

The maritime sector is among the most polluting industrial sectors in the world. To oppose this and following the global trend towards carbon neutrality, the International Maritime Organization (IMO) introduced the objective to reduce the CO2 emission of vessels by the year 2030 of 40% and at the same time the European Union will introduce the maritime sector into the ETS system. Therefore, there is a need to reduce the emissions of the working vessels, and this can be accomplished through the Carbon Capture and Storage (CCS). There are many possible CCS technologies that can be applied to vessels: the one that has already been studied the most is the ammine scrubbing of the exhaust gasses. In parallel, other technologies have been proposed to reduce volume and energy needs, which are the Molten Carbonate Fuel Cells (MCFCs), membrane technologies, fixed bed absorption processes and limestone. The review shows how, depending on the used vessel type, the technology to be used may vary, and proposes some preferential options for different applications. The obtained results can be of relevant importance in the present context of energy transition promoting immediate retrofitting to respond to the urgent request for intervention.

Impact of ship noise on the underwater soundscape of Eclipse Sound in the northeastern Canadian Arctic

Eclipse Sound, in the northeastern Canadian Arctic, has experienced a substantial increase in ship traffic due to growing tourism and industrial development in the region. This study aims to describe the natural soundscape as well as to assess the noise levels associated with shipping. Underwater sound recordings were collected at two locations: Eastern Eclipse Sound (72° 43.730 N, 76° 13.519 W, 670 m) leading to Baffin Bay, and Milne Inlet (72° 15.260 N, 80° 34.205 W, 313 m) situated near the southwest end of Eclipse Sound. To capture the dynamic nature of the soundscape, the data from these two locations were divided into three seasons: late spring, summer, and early fall. These periods were selected to account for the changing contribution of sea ice to the soundscape during the sea ice break-up, two months of open water, and the sea ice freeze-up.By analyzing ship tracks and underwater acoustic recordings, we identified patterns of ship traffic and estimated underwater noise levels due to ships. Noise emitted by ships is quantified by vessel type, including three cargo ship types, passenger ships, pleasure craft, and icebreakers. Individual ship transits through the region introduce transient noise at frequencies from <20 Hz to >20 kHz, with durations lasting from a few minutes to >6 h. The impact of ship noise on the soundscape is significant, resulting in increases in sound levels by 15 to >30 dB when ships are within 10 km and measurable ship noise below 200 Hz at distances of >50 km.

Dynamic optical coherence tomography of chronic venous ulcers.

Chronic ulcers, especially venous leg ulcers, are a major burden on the healthcare system. To date there are only few non-invasive established procedures for evaluation of blood perfusion in wounds. Dynamic optical coherence tomography (D-OCT) provides images of the skin's superficial vascularisation. This study aims to investigate if and how the D-OCT measurement of chronic wounds can provide new information about the vascularisation during the healing process. We examined 16 venous ulcers over 16 weeks and evaluated the vessel morphology and density using D-OCT at the wound bed, borders, two centimetres adjacent to the wound und at non-ulcerated skin on the contralateral leg. In D-OCT scans clumps were unique and the most common vessel type in the wound area of venous ulcers, whereas lines and serpiginous vessels were the most common in non-ulcerated skin. At the wound border mottle and cluster patterns occurred more frequently. Healthy skin showed a significant increase of mesh pattern. Vessel density significantly increased at the wound area compared to non-ulcerated skin. During the healing process the wound border showed the most vascular changes while only an increase in curves was observed in the wound centre. Non-healing wounds had fewer dots and blobs at the borders, fewer dots, coils, clumps, lines and serpiginous vessels at the centre and fewer dots in adjacent skin. Temperature analysis showed higher temperatures in non-ulcerated skin, followed by the wound margin and centre. Non-healing wounds showed the lowest temperatures in the wound centre. These results highlight the non-invasive use of D-OCT for the examination and monitoring of wound healing in chronic venous ulcers. D-OCT imaging of blood vessels may offer the potential to detect disorders of wound healing at an early stage, differentiate ulcers of different genesis and to tailor more individualized, patient-oriented therapy.

Hemangiomas of gingiva mimicking pericoronitis: A case report

Malformations and vascular tumors can occur anywhere on the body. Hemangiomas, or vascular tumors, are rare at birth, develop quickly during the first six months of life, involute over time, and can occasionally be harmful even though they do not always spread. Uneven vascular networks, known as vascular malformations, are identified by a certain blood vessel type. Hemangiomas is of benign origin and behavioral but, Hemangioma in the oral cavity is of clinical importance. It often mimics other lesions clinically and requires appropriate clinical diagnosis and proper management. Accurate diagnosis of the lesion plays an important role in framing the correct protocols and for delivering the correct treatment. Imaging techniques such as Ultrasound with color doppler may be needed in combination to determine the nature of the blood supply to the lesion either arterial, venous or arteriovenous malformation and can also aid with diagnosis and treatment. It is also beneficial in eliminating non vascular lesions. This paper presents one such interesting case.

Maintenance of Steam Bottle Water to Keep Operational Auxiliary Steam Bottles on The Mv. Ile De Re

Various types of marine vessels require fuel to drive the main engine and auxiliary engines. The fuel requires hot steam as a heater so that the fuel reaches the appropriate temperature, not only fuel but hot steam is also needed for the accommodation space on the ship. The steam boiler is a closed vessel that can produce hot steam with a pressure greater than one atmosphere, to be able to produce hot steam, a heated medium is needed, namely fresh water. The water used in the steam generation process greatly affects the condition of the boiler. Therefore, the quality of water in the boiler must always be considered and maintained so that it is always in good condition, so that the boiler will always be in prime condition. In reality, steam boilers often experience disturbances, such as on the MV. ILE DE RE there is a decrease in the quality of boiler water and the occurrence of scale in the boiler. In this case, the research used an observation research method on boiler water by testing boiler water and it was found that the quality of boiler water was not up to standard with low pH levels up to 6.8, high alkalinity and high chloride up to 200 ppm. there is also a scale formation on the boiler water pipe which can be seen from the dirty condition of the boiler water when taken.

Advancement in Plant Tissue Culture-Based Research for Sustainable Exploitation of Well-Known Medicinal Herb &lt;i&gt;Bacopa Monnieri&lt;/i&gt;

The current review focuses on the plant Bacopa monnieri, one of prominent medical herbs in Indian ayurvedic system. The plant is well known for its cognitive and memory enhancing capabilities. The plant contains many useful alkaloids and secondary metabolites. Studies have shown that it has various promising pharmacological properties which have the potential to treat many illnesses and disorders such as asthma, bronchitis, rheumatism also in for renal disease, water retention, blood cleaning etc. This leads to the over exploitation of the plant which puts a stress on the naturally available stock of the plant, therefore, it becomes a necessity to find optimum methods for mass production of the plant and its important secondary metabolites. This review attempts to compile and to discuss the advancements in methods and techniques including type of culture vessels, plant growth regulators (PGRs), effect of stress, plant growth promoting rhizobacteria (PGPRs) interactions; for in vitro propagation of Bacopa monnieri and the enhanced production of its important bioactive (bacoside) for its sustainable exploitation.

Container ship investment Decisions―Newbuilding vs second-hand vessels

Ship investment is a crucial strategic issue for shipping companies as the container shipping industry is highly capital-intensive. In practice, a company's ship investment decision mainly concerns new shipbuilding and second-hand vessels. The investment of new container ships with advanced technology is high in cost and the payback period is long. Differently, the second-hand vessels' investment cycle is shorter, but there are certain drawbacks in loading capacity and maintenance. Therefore, it is significant to investigate the investment selection of new-building and second-hand ships in the container shipping market. Previous studies have analyzed this topic at aggregate or industry level. Few studies have attempted to reveal ship type preferences from observed individual data. Therefore, using the data from the Clarkson's World Fleet Register between 2000 and 2021, this study employs the Nested Logit model to analyze the container ship investment preferences, and explore the impact of different variables on decision-making from the perspective of individual companies. The empirical results suggest the higher substitution effect among alternatives within the same nest than that of crossing nests. Along with discussion on the effects of various factors, it discloses the higher preferences of larger types of vessels in responding to competitors' capacity expansion, especially the larger companies. Therefore, it is important to distinguish the larger companies' capacity expansion between responding to demand and competing with competitors, especially for those companies adopting follower strategies.

Towards a Pedagogical Model Applying Commedia dell’Arte and Art Workshops in Higher Education Design Studies

Abstract This study introduces a pedagogical model: “the parallel co-inquiry cycles with performative inquiry for character related design” for higher education design studies that focus on characterization. The disciplines benefitting from cross-fertilization provided by the model include game design, fashion design, graphic design, theatre, and actor’s art. Besides the model, the article discusses curriculum integration of a shared thematic denominator Commedia dell’Arte in higher education design studies. The model synthesizes progressive inquiry, drama pedagogical methodologies, and theories on theater with hands-on art workshops to create tangible and digital knowledge vessels for characterization. The research design relies on parallel co-inquiry cycles, participatory ethnography with elements from participatory design tradition. The model identifies three major components within the single 3E-inquiry cycles, namely exercise, experiment and experience. The entire process acquires complexity as each single inquiry cycle enters the next loop of Observe–Plan–Act–Reflect and more time and resources are allocated to the process. The pattern of action and reflection has an iterative cycle format in this model. Reflection has two distinguished purposes: first, to internalize reflective design and to become a reflective practitioner. Second, to see the importance of reflection as distancing oneself from the current process, to allow a reflective mind to linger on the process and learn from mistakes to turn them into assets. Reflection as a metacognitive skill has an all-encompassing purpose in both design and learning processes. The model distinguishes two types of knowledge vessels. Knowledge objects are abstractions that condense knowledge in the co-design process, whereas knowledge artifacts are concrete items, such as masks, outfits, and accessories in both digital and tangible formats. The model connects maker-culture, practice-based inquiry, and performative inquiry in the inquiry cycles. The drama method with performative inquiry acknowledges shared knowledge building in a collaborative, dialogical inquiry that fosters both argumentative and reflection skills.

Appraising the impact of COVID-19 on trading volume of selected vessel types in sub-Saharan Africa

The emergence and diffusion of coronavirus (COVID-19) have brought a lot of impacts on various spheres of human endeavours including maritime trading. This paper explores the effect of the lockdown on maritime port calls for selected vessels in the sub-Saharan African (SSA) regions (East, Middle, South, and West Africa). The study utilizes port calls data of the maritime profile of the global economies obtained from the United Nations Conference on Trade and Development Statistics between 2018 and 2021. Data include port calls for liquid bulk carrier, liquefied petroleum gas, dry bulk carrier, dry break bulk carrier, roll-on-roll-off, and container carrier. The analysis of data involves the use of exploratory technique to reveal dimensions of performance by various carriers across the regions. The results picture the kind of response of port calls in all the regions akin to the response from other regions of the world. However, the study observes that though responses to COVID-19 lockdown across the globe were similar, SSA regions were slow in recovering from the decline in port calls when compared to the developed and some rapidly developing economies of the world due to the region’s lack of economic resilience. Thus, since ports have been identified as vulnerable to economic, social, institutional, and environmental shocks, and to dynamic and highly unpredictable demand for port services, policymakers of various nationals in the SSA may need to examine the patterns of performance of vessels in the regions to manage trade flows more effectively as a way of responding to future dynamics in maritime trade in the region.

The Influence of Traditional Bottom Set Gill Net Dimension with the Daily Catches of Rastrelliger Faughni at the Karangantu Archipelago Fisheries Port, Banten Province, Indonesia

The Karangantu Archipelago Fisheries Port has a central role in provincial fisheries in Banten Province, Indonesia. This role shows that fisher catches are necessary to support regional needs, so that the fishing process up to the dimensions of fishing also helps the catch potential. The measurements of the fishing gear refer to the type of fishing gear, the type of vessel (GT), the number of boxes, and the number of fishers who act as crew members (ABK) during the fishing process. This study aims to measure the influence of the dimensions of fishing gear on the catches obtained by fishers at the Karangantu Archipelago Fisheries Port. The research method uses quantitative methods, based on the results of linear regression of the dependent and independent variables, and interviews in data collection. The results show that the variables of ship weight, number of boxes, and number of crew members had a common effect, 0.35 or 35 %, on fish catches. The low coefficient indicates the influence of the dimensions of the fishing gear is not always the primary determinant. There are 65 % physical and production variables to maximize the dimensions of the fishing gear to support increased catches. Based on this influence analysis, it can be used as a reference for maximizing the dimensions of fisher fishing gear to support increased catches, given the role of Karangantu Archipelago Fisheries Port as a supplier of fish at the provincial level. Highlights The field survey time is essential to decide due to habitual results because of weather differences All fishers observed are using rampus nets (bottom gill net) as their fishing gear Correlation between fishing gear dimensions and daily fish catches analyzed with statistical quantitative methods by linear regression The fish gear dimension does not significantly affect daily fish catches, proven by the low coefficient of determination (R-squared) of 0.35 Other factors that affect daily fish catches of fishers are location, environmental conditions, and physical water