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Journal articles on the topic 'Marine environment conditions'

Author: Grafiati

Published: 10 December 2022

Last updated: 31 July 2025

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1

M, Halafawi. "The Impact of Marine Environment on Jackup Rig Stability." Petroleum & Petrochemical Engineering Journal 4, no. 4 (2020): 1–16. http://dx.doi.org/10.23880/ppej-16000238.

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Changing the conditions of offshore environment influences the offshore units' stability. In paper, a study of the impact of marine environment on a jackup rig was implemented. Firstly, the procedures of departure, transit, and emplacement on any emergency jacking location / stand by location are reviewed. After that, the conditions of weather forecasting are predicted and computed such as wave and wind lengths, speeds, and heights. Maps of changing wind and wave conditions are plotted. Surveying methods are used to determine the final location of the jackup rig. Maps of positioning the jackup

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2

Wasserman, Rina, Lorenzo Ciabocco, and Igal M. Shohet. "Estimating the Service Life of Exterior Stone Claddings Subjected to Regular and Marine Service Conditions." Applied Sciences 13, no. 8 (2023): 4942. http://dx.doi.org/10.3390/app13084942.

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The attractiveness and durability of stone claddings make them a common exterior finish. However, comparative research of the performance of long-lasting “dry fixed” stone claddings and those made using the “wet fixed” method has not yet been carried out. The objectives of this study are to (1) characterize the deterioration patterns of exterior dry- and wet-fixed stone claddings exposed to normal and marine environments; (2) evaluate the life expectancy limiting coefficient (modifying factors), and (3) quantify the influence of a marine environment on both cladding methods. The research metho

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Chasco, Brandon, Brian Burke, Lisa Crozier, and Rich Zabel. "Differential impacts of freshwater and marine covariates on wild and hatchery Chinook salmon marine survival." PLOS ONE 16, no. 2 (2021): e0246659. http://dx.doi.org/10.1371/journal.pone.0246659.

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Large-scale atmospheric conditions in the Northeast Pacific Ocean affect both the freshwater environment in the Columbia River Basin and marine conditions along the coasts of Oregon, Washington, and British Columbia, resulting in correlated conditions in the two environments. For migrating species, such as salmonids that move through multiple habitats, these correlations can amplify the impact of good or poor physical conditions on growth and survival, as movements among habitats may not alleviate effects of anomalous conditions. Unfortunately, identifying the mechanistic drivers of salmon sur

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Yin, Lili, Rubo Zhang, Hengwen Gu, and Peng Li. "Research on Cooperative Perception of MUSVs in Complex Ocean Conditions." Sensors 21, no. 5 (2021): 1657. http://dx.doi.org/10.3390/s21051657.

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Since the working environment of Multiple Unmanned Surface Vehicles (MUSVs) is accompanied by a large number of uncertainties and various hazards, in order to ensure the collision avoidance capability of MUSVs in complex marine environments, the perception of complex marine environments by MUSVs is the first problem that needs to be solved. A cooperative perception framework with uncertain event detection, cooperative collision avoidance pattern recognition and environmental ontology model is proposed to realize the cooperative perception process of MUSVs using ontology and Bayesian network th

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Di Donato, Paola, Andrea Buono, Annarita Poli, et al. "Exploring Marine Environments for the Identification of Extremophiles and Their Enzymes for Sustainable and Green Bioprocesses." Sustainability 11, no. 1 (2018): 149. http://dx.doi.org/10.3390/su11010149.

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Sea environments harbor a wide variety of life forms that have adapted to live in hard and sometimes extreme conditions. Among the marine living organisms, extremophiles represent a group of microorganisms that attract increasing interest in relation to their ability to produce an array of molecules that enable them to thrive in almost every marine environment. Extremophiles can be found in virtually every extreme environment on Earth, since they can tolerate very harsh environmental conditions in terms of temperature, pH, pressure, radiation, etc. Marine extremophiles are the focus of growing

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Russel, P. Galindo, P. Duhaylungsod Rosemarie, L. Ilusorio Gilda, et al. "Coastal Environment and Marine Resources Conditions in Ozamiz City, Philippines." International Journal of Innovative Science and Research Technology 7, no. 12 (2022): 392–98. https://doi.org/10.5281/zenodo.7480825.

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The marine and coastal ecosystems are economically and culturally important, especially for the people depending on them. However, these resources are vulnerable to over-harvesting, pollution, coastal development, and destructive fishing. The condition of small-scale fisheries in the Philippines has deteriorated due to these anthropogenic activities. Given this situation, greater efforts are required for the country to develop sustainable strategies to rehabilitate the coastal environment and mitigate the declining marine resources. This study is conducted to explore the views and experiences

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Bisbal, Gustavo A., and Willis E. McConnaha. "Consideration of ocean conditions in the management of salmon." Canadian Journal of Fisheries and Aquatic Sciences 55, no. 9 (1998): 2178–86. http://dx.doi.org/10.1139/f98-108.

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An ecologically based conceptual foundation is presented as a way to incorporate environmental variability in salmon management. The argument addresses the problem of accommodating marine environment variability through actions in freshwater. We argue for an approach that considers marine and freshwater environments as integral components of a larger salmonid ecosystem. This contrasts with previous propositions that either relied heavily on technological fixes in the freshwater environment or questioned the value of any recovery effort designed to withstand overwhelming ocean forces. Salmon ma

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Beltrán-Sanahuja, Ana, Nuria Casado-Coy, Lorena Simó-Cabrera, and Carlos Sanz-Lázaro. "Monitoring polymer degradation under different conditions in the marine environment." Environmental Pollution 259 (April 2020): 113836. http://dx.doi.org/10.1016/j.envpol.2019.113836.

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Concepcion, Gisela, Marvin Altamia, Miguel Enrique Azcuna, et al. "The Marine Environment: An Uncharted Resource for Drugs." Transactions of the National Academy of Science and Technology 39, no. 2017 (2021): 1–17. http://dx.doi.org/10.57043/transnastphl.2017.1069.

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There is a strong “eco-bio-chemo-diversity” rationale to search the marine environment with its unique abiotic and biotic habitats for potential drug leads for serious pathological conditions such as cancer, infectious diseases, neurodegeneration and pain. Compounds produced by marine invertebrate organisms and their associated microorganisms that thrive successfully in five unique types of marine ecosystems are presented here as promising candidates for drug development. Marine organisms have evolved these chemicals to mediate specific biological and ecological interactions for their growth,

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10

Li, Zhuoqing. "Protection and Progress of the Marine Environment." Highlights in Science, Engineering and Technology 74 (December 29, 2023): 829–35. http://dx.doi.org/10.54097/3v7kg147.

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The marine environment is an important part of the earth's ecosystem and is of great significance to maintaining the earth's ecological balance and the sustainable development of human beings. However, due to undue interference and pollution from human activities, the marine environment is facing serious threats. The aim is to explore the importance of protecting the marine environment and propose some feasible measures to reduce marine pollution and protect marine biodiversity. In a word, the research on marine environmental protection is of great significance for maintaining ecological balan

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11

KE, Kouadio. "Origin, Depositional Environment and Thermal Maturity of some Source Rocks from Niger Delta Basin, Nigeria." Petroleum & Petrochemical Engineering Journal 6, no. 4 (2022): 1–14. http://dx.doi.org/10.23880/ppej-16000318.

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Eleven (11) core samples from Agbada and Akata formations in the Niger Delta, Nigeria, were analyzed using gas chromatography-mass spectrometry to evaluate their paleodepositional conditions and source input as well as to determine their thermal maturity. The distribution of n-alkanes, isoprenoids, and biomarkers indicate a mixture (marine/terrigenous) organic matter source input for Agbada and Akata formation sediments deposited in marine environment. Low values of Phytane/nC18 (0.45 to 1.32) and Pristane/nC17 (0.37 to 1.8) indicates Marine organic matter contribution and anoxic-suboxic (Type

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12

Xu, Jing, Hao Lu, Linxuan Cai, Yihong Liao, and Jiadi Lian. "Surface Protection Technology for Metallic Materials in Marine Environments." Materials 16, no. 20 (2023): 6822. http://dx.doi.org/10.3390/ma16206822.

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As the demand for the development and utilization of marine resources continues to strengthen, the service requirements for advanced marine equipment are rapidly increasing. Surface protection technology has become an important way of solving the tribological problems of extreme operating conditions and improving the safety performance of equipment by imparting certain special properties to the surface of the material through physical, chemical or mechanical processes to enhance the ability of the material to withstand external environmental factors. Combined with the extremely complex charact

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Petropoulos, A., I. Baziotis, Ch Anagnostou, and N. Evelpidou. "BEACHROCKS CEMENT CHARACTERISTICS AND CONDITIONS OF FORMATION. CASE STUDY PLATANIAS BEACH, CHANIA, GREECE." Bulletin of the Geological Society of Greece 50, no. 1 (2017): 458. http://dx.doi.org/10.12681/bgsg.11747.

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Beachrocks represents a coastal deposition in the intertidal area, and studying their properties may lead to create a model which identifies the conditions of their formation (paleo-environment). This paper focuses most intently on the cement material which is able to recover the paleo-environment conditions during diagenesis of such coastal sediment. We used optical microscopy, secondary electron microscopy and Raman Spectroscopy to characterize the cement texture, mineralogy and chemistry in the beachrocks. The existence of pure calcite primarily controlled by the meteorite water, while Mg-c

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Cho, Yong Jun. "Development of Probabilistic Models Optimized for Korean Marine Environment Varying from Sea to Sea Based on the Three-parameter Weibull Distribution." Journal of Korean Society of Coastal and Ocean Engineers 36, no. 1 (2024): 20–36. http://dx.doi.org/10.9765/kscoe.2024.36.1.20.

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In this study, probabilistic models for the wave- and lifting forces were derived directly from long-term in-situ wave data embedding the Korean marine environment characteristics varying from sea to sea based on the Three-Parameter Weibull distribution. Korean marine environment characteristics varying from sea to sea carved out their presence on the probability coefficients of probabilistic models for wave- and lifting forces. Energetic wave conditions along the southern coast of Korea distinguish themselves from the others with a relatively large scale coefficient, small location coefficien

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van Katwijk, Marieke M., Rens J. T. Cronau, Leon P. M. Lamers, Pauline Kamermans, Brigitta I. van Tussenbroek, and Dick J. de Jong. "Salinity-Induced Extinction of Zostera marina in Lake Grevelingen? How Strong Habitat Modification May Require Introduction of a Suitable Ecotype." Sustainability 15, no. 4 (2023): 3472. http://dx.doi.org/10.3390/su15043472.

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During the 1980s–1990s, 4600 hectares of the seagrass Zostera marina were permanently lost from Lake Grevelingen (the Netherlands), and restoration is planned. In 1971, the lake was fully marine (salinity 30), and seagrass covered 1300 hectares. After closure in that year, the lake gradually became brackish (salinity of 23 by 1978), and the meadows expanded to 4600 hectares. However, with the creation of a sluice connection to the sea in 1978, the lake returned to marine conditions and a fatal decline initiated. We revisit traditionally suggested causes of the disappearance of the seagrass, fi

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Doukari, M., and K. Topouzelis. "UAS DATA ACQUISITION PROTOCOL FOR MARINE HABITAT MAPPING: AN ACCURACY ASSESSMENT STUDY." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B3-2020 (August 22, 2020): 1321–26. http://dx.doi.org/10.5194/isprs-archives-xliii-b3-2020-1321-2020.

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Abstract. Marine habitat mapping is essential for updating existing information, preserving, and protecting the marine environment. Unmanned Aerial Systems (UAS) are an important tool for monitoring and mapping coastal and marine environment because of their ability to provide very high-resolution aerial imagery.Environmental conditions have a critical role in marine mapping using UAS. This is due to the limitations of UAS surveys in coastal areas, i.e. the environmental conditions prevailing in the area. The limitations of weather and oceanographic conditions affecting the quality of marine d

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17

Apoorva, S., and Prathap Kumar M. T. Dr. "Evaluation of Corrosion of Rebar under Simulated Marine Conditions." Journal of Advanced Cement & Concrete Technology 6, no. 1 (2023): 25–33. https://doi.org/10.5281/zenodo.7697632.

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Corrosion of steel reinforcement leading to deterioration of concrete is caused by an electrochemical due to the formation of small anodes and cathodes, resulting in ion movement between the two electrodes. Under marine environment, the inclusion of chloride into concrete is the primary reasons of reinforcement corrosion. The objective of the present study is to assess the extent of corrosion of rebar using accelerated corrosion test under simulated marine condition. In the present study, 150mm x 150mm x 150mm concrete cube specimens along with 8mm steel bar as reinforcement was used to assess

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18

Godfrin, Michael P., Maswazi Sihlabela, Arijit Bose, and Anubhav Tripathi. "Behavior of Marine Bacteria in Clean Environment and Oil Spill Conditions." Langmuir 34, no. 30 (2018): 9047–53. http://dx.doi.org/10.1021/acs.langmuir.8b01319.

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19

Namadi, Peyman, and Zhiqiang Deng. "Optimum environmental conditions controlling prevalence of vibrio parahaemolyticus in marine environment." Marine Environmental Research 183 (January 2023): 105828. http://dx.doi.org/10.1016/j.marenvres.2022.105828.

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20

Koçhan, Cemal, Gökdeniz Neşer, and Çiçek Özes. "The Fracture Toughness of PVC / GRP Sandwich Systems in Marine Environment." Advanced Composites Letters 17, no. 1 (2008): 096369350801700. http://dx.doi.org/10.1177/096369350801700103.

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The aim of this study is to investigate experimentally the fracture toughness of sandwich systems with the PVC foam core in marine environment with a Mode-I Cracked Sandwich Beam (CSB) test arrangement. Five CSB specimens at each condition were tested. To get the values under marine environment, one set of specimen was conditioned in a 5% solution of NaCl for a 120 h period at a constant temperature of 50°C. It has been found that the fracture toughness of the PVC foam core material slightly increases under marine environmental conditions. It can be concluded that under the conditions in this

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21

Chou, Loke Ming. "Enhancing Marine Biodiversity in Singapore’s Urbanizing Coastal Environment." International Journal of Environmental Science and Development 11, no. 11 (2020): 519–23. http://dx.doi.org/10.18178/ijesd.2020.11.11.1301.

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Urbanization of coastal cities has resulted in extensive physical modification of the coast that is commonly accompanied by habitat destruction or degradation, marine biodiversity loss and ecosystem services decline. Conversion of the natural environment to a human-modified one is often permanent, and it is important that development considerations take into account biodiversity enhancement of the ‘new’ environment. Development of biological communities in the modified environment takes time and is unlikely to return to levels once supported by the original habitats, but efforts can be made to

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22

Ahmad, Osamah, Mamdoh Jamal, Hamdah Almalki, Abeer Alzahrani, Amirah Alatawi, and Md Haque. "Microplastic pollution in the marine environment: Sources, impacts, and degradation." Journal of Advanced Veterinary and Animal Research 12, no. 1 (2025): 260. https://doi.org/10.5455/javar.2025.l893.

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Microplastics (MPs) are tiny particles derived from plastic, and their high fragmentation poses a significant threat to the marine environment. MPs can originate from various sources, such as primary or secondary sources as well as internal or external sources. However, in marine environments, MPs mainly enter from external sources, such as plastic waste, debris from land-based activities, tourism, shipping, and atmospheric deposition. MP accumulation in marine ecosystems is also influenced by the use of plastic equipment, aquaculture feed, health products, and particular environmental conditi

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23

Taher, A. "Corrosion Behavior of Copper-Nickel Alloy in Marine Environment (Review Paper)." Applied Mechanics and Materials 799-800 (October 2015): 222–31. http://dx.doi.org/10.4028/www.scientific.net/amm.799-800.222.

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Copper-nickel alloys have been used in many applications in marine environments because of excellent corrosion and biofouling resistance. . This investigation is cover a review of many previous studies about the behavior of these alloys in marine environments with different environmental conditions including the effect of sulphur contamination, the effect of CO2, the effect of chlorine, the effect of flow velocity, the effect of temperature and the effect of adding some alloying elements to the alloy itself. There have been conflicting results in the past about the corrosion rate values and th

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Raddadi, Noura, Lucia Giacomucci, Grazia Totaro, and Fabio Fava. "Marinobacter sp. from marine sediments produce highly stable surface-active agents for combatting marine oil spills." Microbial Cell Factories 16, no. 1 (2017): 186. https://doi.org/10.1186/s12934-017-0797-3.

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<strong>Background: </strong>The application of chemical dispersants as a response to marine oil spills is raising concerns related to their potential toxicity also towards microbes involved in oil biodegradation. Hence, oil spills occurring under marine environments necessitate the application of biodispersants that are highly active, stable and effective under marine environment context. Biosurfactants from marine bacteria could be good candidates for the development of biodispersant formulations effective in marine environment. This study aimed at establishing a collection of marine bacteri

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Wei, Xie. "Collaborative protection of marine environment in the Guangdong-Hong Kong-Macao Greater Bay Area." E3S Web of Conferences 233 (2021): 01132. http://dx.doi.org/10.1051/e3sconf/202123301132.

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The quality of Marine ecological environment is one of the necessary conditions for building a world-class bay area. The ecological environment in the coastal waters of Guangdong-Hong Kong-Macao Greater Bay Area is seriously polluted, it is urgently needed for three places to strengthen coordinated Marine ecological and environmental management. Under the guidance of outline development plan for the Greater Bay Area and with the goal of building a Marine ecological civilization in the Greater Bay Area, the coordination mechanism of administrative management and the standard system for Marine e

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Prudkovsky, A. A., N. P. Karaseva, M. N. Rimskaya-Korsakova, T. P. Pimenov, N. N. Rimskaya-Korsakova, and V. V. Malakhov. "First Experience of Keeping Pogonophorans (Annelida: Siboglinidae) in Laboratory Conditions." Doklady Biological Sciences 506, no. 1 (2022): 150–53. http://dx.doi.org/10.1134/s001249662205009x.

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27

M. K., Kozanhan. "Maritime Tanker Accidents and Their Impact on Marine Environment." Scientific Bulletin of Naval Academy XXII, no. 1 (2019): 324–42. http://dx.doi.org/10.21279/1454-864x-19-i1-047.

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Shipping is a fundamental mode of transportation for 85 per cent of the world trade, supplying raw materials, energy, manufactured goods, foodstuffs etc. to the global population, is carried by international shipping industry. In such busy traffic, unfortunately, accidents are inevitable events. Large numbers of casualties occur at sea almost every day. Human loss and marine environmental damage, among others such as financial and property losses, are the most crucial and hazardous disasters caused by maritime accidents. There are several causes playing role in maritime accidents such as natur

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Seong, Jun-Hyuk. "A Study on the Improvement of Marine Environment Policy: Focused on Marine Police Response." Korean Society of Private Security 23, no. 5 (2024): 433–54. https://doi.org/10.56603/jksps.2024.23.5.433.

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The purpose of this study is to select the improvement of marine environment policy as a research subject and examine the appropriateness of its prevention and response. Based on the marine Police Act and the relevant regulations of the Ministry of Oceans and Fisheries, the role of the marine police was examined. In addition, interviews were conducted with marine police officers and marine environment officials. The research results derived from this study are as follows. First, regarding the disaster prevention and response of marine pollution, the performance of the marine police is appropri

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Zhao, Hang. "The Impact of Fishing Ban Policy on Marine Ecological Environment." Highlights in Science, Engineering and Technology 91 (April 15, 2024): 430–37. http://dx.doi.org/10.54097/d6kkj556.

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This study aims to explore the impact of implementing fishing moratorium policies on the marine ecological environment in the Bohai Sea region. The marine environment in this area has been long degraded, primarily due to excessive fishing and pollution. This study focuses on the before and after effects of the fishing moratorium policy on the marine ecological environment. Research methods include literature review and data analysis, analyzing the marine environmental conditions in the region prior to the implementation of the fishing moratorium policy. The results show that implementing the f

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Murugesan, Mr Madhanraj. "Large Diameter Piles in Versova Bandra Sea Link Project - A Case Study." International Journal for Research in Applied Science and Engineering Technology 13, no. 4 (2025): 4789–804. https://doi.org/10.22214/ijraset.2025.69424.

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The construction of bridges in marine environments poses unique challenges that demand innovative solutions to save the ecosystem along with the time and construction cost. Monopiles have emerged as a pivotal component in such conditions and have much reduced impact on marine environment and ecosystem. Monopile foundation is studied to find a good idea for design. It primarily illustrates why a large diameter pile foundation is preferable than a group pile bridge foundation. The motivation behind this study is to analyze the performance of monopile foundation over group pile foundation in mari

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Stoupakova, Antonina V., Nataliya I. Korobova, Alina V. Mordasova, et al. "Depositional environments as a framework for genetic classification of the basic criteria of petroleum potential." Georesursy 25, no. 2 (2023): 75–88. http://dx.doi.org/10.18599/grs.2023.2.6.

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Most classifications of reservoirs, seals and source rocks based on the ability of the rock to generate, accumulate and preserve hydrocarbons, and the genesis of rocks is not always taken into account. The article presents a ranking scheme for continental, coastal-marine and marine sedimentation environments that determine the genesis and properties of the basic criteria of petroleum potential – source rocks, reservoirs, seals and pinch-out traps. Rocks, which can consider as source rock, reservoirs and seals are formed in each depositional environment. However, their structure, mineral compos

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Alamsyah, Vicky Verry Angga, and Danik Fitriani. "Lomban Traditions and Preservation of the Marine Environment in Jepara." E3S Web of Conferences 359 (2022): 06001. http://dx.doi.org/10.1051/e3sconf/202235906001.

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Lomban is a tradition of the Jepara people in which is carried out one week after Eid al-Fitr. Lomban is a party of fishing communities in the form of sea alms, which is now supported by the people of Jepara and outside Jepara. The center of the competition is located at Kartini Beach. This competition activity is related to the environment and marine conservation, especially in protecting the environment. The existence of the lomban tradition shows the continuity of fish living in the sea and the harmony between the marine environment, humans, and God. The lomban tradition in which there is a

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Bahaj, Hanane, Barhoun Barhoun, Naima Bachiri Taoufiq, et al. "Paleoenvironmental changes preceding the onset of the Messinian salinity crisis in the western Mediterranean Sea (pre-evaporitic Messinian of the Melilla-Nador Basin, NE Morocco)." Carnets de géologie (Notebooks on geology) 24, no. 01 (2024): 1–27. http://dx.doi.org/10.2110/carnets.2024.2401.

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In order to contribute to the understanding of the evolution of marine and continental environments, preceding the onset of the Messinian salinity crisis in the western Mediterranean, we conducted an integrated study of the pre-evaporitic Messinian sedimentary series in the Melilla-Nador basin. Three sections have been carried out in the marl-diatomite series and were the subject of a detailed biostratigraphic and palynological study. The study of planktonic foraminifera, pollen, dinocysts, and palynofacies allowed us to characterize the evolution of these environments. From 6.83 to 6.52 Ma, t

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Kim, Ye-Jin, Soon-Hwan Lee, Jae-Gyu Kim, and Myoung-Sung Choi. "Design and Performance Evaluation of Photovoltaic Concrete Structures in Marine Environment Conditions." Journal of the Korea Concrete Institute 36, no. 1 (2024): 11–21. http://dx.doi.org/10.4334/jkci.2024.36.1.011.

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Crisóstomo, Rafael Octavio, Renzo Pepe-Victoriano, Sheda Méndez-Ancca, et al. "Reproductive Conditioning of the Peruvian Scallop Argopecten purpuratus in Different Environments." Fishes 9, no. 1 (2023): 9. http://dx.doi.org/10.3390/fishes9010009.

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Obtaining viable Argopecten purpuratus seeds faces challenges, especiallyci the unpredictability of the marine environment and high production costs in hatcheries. However, improving the method of "Broodstock Conditioning In Hatcheries" is key to ensure permanent seed supplies by minimizing the dependence on marine conditions and by maximizing economic viability in hatcheries. In an effort to overcome these barriers, broodstock were conditioned into two different environments: (a) Natural Environment: Natural marine conditions located in Bahía Inglesa, Atacama Region, Chile. (b) Hatchery: Labo

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Voloshinov, Sergey. "The use of information-educational environment in the training of future marine professionals: analysis of experience." Scientific Visnyk V.O. Sukhomlynskyi Mykolaiv National University. Pedagogical Sciences 66, no. 3 (2019): 53–58. http://dx.doi.org/10.33310/2518-7813-2019-66-3-53-58.

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The article actualizes the question of the suitability of the educational environment for training future marine professionals to the conditions of their future professional activity. Based on the analysis of scientific, methodological and pedagogical works, the experience of creating and implementing information and educational environments for the professional training of future marine professionals has been generalized. It is determined that such environment should include innovative educational activities, modern information and communication training and facilities for training students.

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Li, Yiheng, Fengling Yang, and Shizhen Li. "Research on sea state simulation based on fast Fourier transform method and multi-load coupling of wind, wave and current." Journal of Physics: Conference Series 3007, no. 1 (2025): 012014. https://doi.org/10.1088/1742-6596/3007/1/012014.

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Abstract Nowsdays, the demand for the development of marine resources such as wave energy and wind energy is steadily increasing. In order to ensure the stability of offshore facilities, it is essential to simulate and analyze the sea surface environment and hydrodynamic processes. To enhance the accuracy of simulating real sea conditions, the fast Fourier transform algorithm was utilized to analyze sea surface data within a specific area of the South Sea of China. By integrating these analysis results with actual wind and current parameters from the marine environment, a numerical model was e

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Yang, Hui, Xueliang Pang, and Pengfei Jiang. "Influences of Ocean Environment on Sound Propagation Based on Bellhop Model." Journal of Physics: Conference Series 2480, no. 1 (2023): 012013. http://dx.doi.org/10.1088/1742-6596/2480/1/012013.

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Abstract The actual marine environment is complex and changeable, and different marine environmental factors have an important impact on sound propagation. Based on the Bellhop model, this paper studies the sound propagation characteristics under different marine environmental factors, quantitatively analyzes the differences in the sound propagation characteristics when the seabed topography, sound velocity profile, and sound source emission angle change, and summarizes the impact on underwater sound propagation under different conditions, so as to provide a theoretical numerical basis for the

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Blatman, Eyal. "NPA Cells in the Marine Environment." E3S Web of Conferences 368 (2023): 03006. http://dx.doi.org/10.1051/e3sconf/202336803006.

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Novel Polymeric Alloy (NPA) cells are a cellular confinement system with the engineering properties required by international standards for long-term confinement in demanding infrastructure projects. Three-dimensional NPA cells are used as a cover protection system against channel, stream and shoreline erosion caused by flowing water and tractive forces. NPA cells enhance the performance of conventional erosion control materials and dissipate energy from flood, current and wave action for hydraulic and marine structures and are a best available technique for canals, channels, drainage, shoreli

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Doukari, Michaela, Marios Batsaris, and Konstantinos Topouzelis. "UASea: A Data Acquisition Toolbox for Improving Marine Habitat Mapping." Drones 5, no. 3 (2021): 73. http://dx.doi.org/10.3390/drones5030073.

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Unmanned aerial systems (UAS) are widely used in the acquisition of high-resolution information in the marine environment. Although the potential applications of UAS in marine habitat mapping are constantly increasing, many limitations need to be overcome—most of which are related to the prevalent environmental conditions—to reach efficient UAS surveys. The knowledge of the UAS limitations in marine data acquisition and the examination of the optimal flight conditions led to the development of the UASea toolbox. This study presents the UASea, a data acquisition toolbox that is developed for ef

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Paniagua-Michel, J., and Ibrahim M. Banat. "Unravelling Diatoms’ Potential for the Bioremediation of Oil Hydrocarbons in Marine Environments." Clean Technologies 6, no. 1 (2024): 93–115. http://dx.doi.org/10.3390/cleantechnol6010007.

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The search for practical solutions to alleviate the destructive impact of petroleum hydrocarbons in marine environments is contributing to the implementation of prospecting strategies for indigenous microorganisms with biodegradative and bioremediation potential. The levels of petroleum contamination entering the marine environment each year have been estimated at around 1.3 million tonnes, a figure that is expected to increase by 1.9% annually over the next decade. The recent interest in decarbonizing our energy system and accelerating the clean energy transition has created a demand for gree

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Yu, Yin, Yun Li, Feng Xiao, and Fang Zhou. "Application of D-S Evidence Theory in Marine Environmental Security Posture Assessment." E3S Web of Conferences 370 (2023): 01003. http://dx.doi.org/10.1051/e3sconf/202337001003.

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In the past, in geological exploration, marine development and offshore safety management, we have realized that the development and damage to the marine environment are very serious and important. While technology has improved rapidly over the years, the marine environment is changing faster than geological exploration, development and management. We must ensure the safety of hydrographic, meteorological conditions and sea wind weather forecasting. Due to the limitations of geological exploration techniques and methods, many problems are difficult to deal with or unpredictable when analyzing

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Li, Biao, Jingping Wang, Tongkui Yu, Wanyu Liu, and Yunduan Lu. "Research on Modeling Methods for Marine Test Environment." Advances in Engineering Technology Research 9, no. 1 (2023): 164. http://dx.doi.org/10.56028/aetr.9.1.164.2024.

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In view of the needs of intelligent and unmanned development of marine equipment, not only the need to test its performance and intelligence level in the actual maritime environment, but also to test its intelligence and improve its intelligence level in the virtual environment, for this reason, it is very important to build a virtual environment under real test conditions, and the traditional simulation environment construction method is low in fidelity and large gap with the actual environment, which is not conducive to the intelligent system for experimental testing and training exercises,

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Liu, Shiyu, Bowen Dong, Jin Yu, Yanyan Cai, Xingqian Peng, and Xianqi Zhou. "Effect of Different Mineralization Modes on Strengthening Calcareous Sand under Simulated Seawater Conditions." Sustainability 13, no. 15 (2021): 8265. http://dx.doi.org/10.3390/su13158265.

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Calcareous sand, as a blow-fill or construction material, is widely used in island and reef construction projects in marine environments after treatment. When microorganism-induced mineralization is used to strengthen calcareous sand, salinity and other conditions in the marine environment will adversely affect microorganisms or their mineralization process. For this reason, the two environmental conditions created by deionized water and simulated seawater were introduced to explore their effects on the growth and urease activity of Sporosarcina pasteurii. Then, the changes in the permeability

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Mehlqvist, Kristina, Jane Wigforss-Lange, and Vivi Vajda. "A palynological study from Sweden reveals stable terrestrial environments during Late Silurian extreme marine conditions." Earth and Environmental Science Transactions of the Royal Society of Edinburgh 105, no. 3 (2014): 149–58. http://dx.doi.org/10.1017/s1755691015000043.

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ABSTRACTA palynological study of the upper Silurian Öved–Ramsåsa Group in Skåne, Sweden yields a well preserved spore assemblage with low relative abundances of marine microfossils. In total, 26 spore taxa represented by 15 genera were identified. The spore assemblage is dominated by long-ranging cryptospore taxa, and the trilete spore Ambitisporites avitus-dilutus. However, key-species identified include Artemopyra radiata, Hispanaediscus lamontii, H. major, H. verrucatus, Scylaspora scripta and Synorisporites cf. libycus. Importantly, Scylaspora klintaensis was identified, allowing correlati

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Malešević, Nikola, Irena Ciglenečki, Elvira Bura-Nakić, et al. "Diatoms in an extreme euxinic environment (Rogoznica Lake, eastern Adriatic coast)." Acta Botanica Croatica 74, no. 2 (2015): 333–43. http://dx.doi.org/10.1515/botcro-2015-0031.

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AbstractThe Rogoznica Lake marine system is a small, karstic, naturally eutrophic and euxinic marine environment. Abundance and temporal distribution of phytoplankton was investigated in relation to environmental conditions in the period from 1998 to 2013. The 36 determined diatoms contributed 90% of the total phytoplankton abundance. The diatom composition is characterized by low species diversity and high single species abundance (up to 107 cells L-1). There were, on average, 2.6 diatom species per sample (maximum 14 diatom species per sample) reflecting extreme environmental conditions. Dom

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Wu, Jie, Jing Li, Feng Rao, and Wanzhong Yin. "Characterization of Slag Reprocessing Tailings-Based Geopolymers in Marine Environment." Minerals 10, no. 9 (2020): 832. http://dx.doi.org/10.3390/min10090832.

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In this study, copper slag reprocessing tailings (CSRT) were synthesized into geopolymers with 40%, 50% and 60% metakaolin. The evolution of compressive strength and microstructures of CSRT-based geopolymers in a marine environment was investigated. Except for compressive strength measurement, the characterizations of X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR) and scanning electron microscopy (SEM) were included. It was found that marine conditions changed the Si/Al ratio in the sodium-aluminosilicate-hydrate (N-A-S-H) gel backbone

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Pommier, Thomas, Emmanuel J. P. Douzery, and David Mouillot. "Environment drives high phylogenetic turnover among oceanic bacterial communities." Biology Letters 8, no. 4 (2012): 562–66. http://dx.doi.org/10.1098/rsbl.2011.0990.

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Although environmental filtering has been observed to influence the biodiversity patterns of marine bacterial communities, it was restricted to the regional scale and to the species level, leaving the main drivers unknown at large biogeographic scales and higher taxonomic levels. Bacterial communities with different species compositions may nevertheless share phylogenetic lineages, and phylogenetic turnover (PT) among those communities may be surprisingly low along any biogeographic or environmental gradient. Here, we investigated the relative influence of environmental filtering and geographi

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Guo, Nianci, and Xiaowei Wang. "Deep Learning-Based Optimization for Maritime Relay Networks." Applied Sciences 15, no. 3 (2025): 1160. https://doi.org/10.3390/app15031160.

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The complexity and uncertainty of the marine environment pose significant challenges to the stability and coverage of communication links. Due to the limited coverage range of traditional onshore base stations (BSs) in marine environments, relay technology has become an essential approach to extending communication coverage. However, the rapid variations in marine wireless channels and the complexity of hydrological conditions make it extremely difficult to obtain accurate channel state information (CSI). In particular, dynamic environmental factors such as waves, tides and wind speed cause ch

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Nguyen Thi Tuyet, Trinh, and Hieu Le Trung. "Accelerated corrosion effects on steel pipe pile materials in simulated Nhatrang seawater, Vietnam." Transport and Communications Science Journal 76, no. 1 (2025): 89–101. https://doi.org/10.47869/tcsj.76.1.8.

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Steel pipe piles are widely used in coastal infrastructure due to their high strength and durability. However, in tropical marine environments like Nha Trang, Vietnam, the high chloride content, temperature, and humidity significantly accelerate the corrosion process. Despite their extensive application, no published studies have specifically addressed the corrosion behavior of steel pipe piles in Vietnam's marine environment. This study investigated the accelerated corrosion effects on steel pipe pile materials in a simulated Nha Trang seawater environment, representing typical coastal condit

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