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The South China Sea, including the Vietnam Sea, is witnessing significant changes under the impact of both nature and man. These are the impacts of climate change and ocean change with "extreme" signs such as increasing storms, coastal floods, sea level rise, sea acidification, pollution and environmental incidents, ... occur thicker, more intense and irregular. Especially serious degradation of the environment and biodiversity of the sea, increasing environmental incidents, including oil spills, ... due to human impact. Especially the large-scale destruction of coral reefs, seagrass beds in island clusters off the South China Sea has been happening at a worrying rate. The destructive fishing activities of humans in the South China Sea have caused ecosystem degradation and the extinction of some species, such as sea turtles, some sharks and another species. Other fish, especially the giant mussel, the consequence is a decrease in the natural capital of the sea, leading too prolonged "ecological disturbances". The reserves of seafood in the Spratly region (of Vietnam) and the West Sea in the East Sea have decreased by about 19% compared to before 2017. Therefore, the improvement of marine environment quality, including biodiversity conservation and major marine ecosystems are to preserve marine natural assets, contributing to the implementation of Vietnam's green growth strategy and action plan. This is the path that Vietnam has chosen to both grow marine economy, adapt to climate change, and protect the environment both in the short and long term, towards sustainable development.

In the technical work on low temperature so far lacks a full analysis of the basis of thermodynamic processes using modern methods. Meanwhile, the low temperature conventions widely used in different fields. The purpose of this section is to give readers tools for thermodynamic studies and presents changes in the system on a fairly low temperature, intuitive nature and practices for analysis low-temperature processes related to cold and depth on the basis of using a unified approach. The low temperature process is applied in a number of techniques including basic process repeated. So it is best to preliminary studies the changing characteristics of our energy to then study the overall process.

In Vietnam, status is mentioned a lot in recent economic and management documents. The scientific basis of the position resources for socio-economic development is still a new issue in our country, and it is not accessible in the world. However, this is a significant direction that the right awareness will create a new perspective on the rational use of resources, spatial organization, and planning of rational and sustainable socio-economic development. Vietnam is particularly crucial in Southeast Asia thanks to a territory stretching over three thousand kilometers on the western edge of the South China Sea and a territorial sea area of over one million square kilometers, three times the area of the territory. The Vietnam Sea is located in a tropical monsoon region, with world-class rivers that the basin covers six countries. The Vietnam Sea plays an essential role in the environment, the ecology of the East Sea and the region, an exclusive transitional zone between the Indian Ocean and the Pacific Ocean in terms of biological and maritime geography. The development of an industrialized and modernized economy must inevitably be linked to the maritime potential of the ocean. This article presents the initial findings on the coastal and coastal status of Vietnam.

The fourth industrial revolution, also known as the digital revolution, has taken place since the beginning of the 21st century. The characteristic of this industrial revolution is the increasing popularity of artificial intelligence and automated machines. chemistry, bringing a combination of virtual systems and reality. This revolution has a strong impact on many fields and many aspects of social life, in which a special human resource of high quality is indispensable; but human resources are the direct object of education – training. Education and training play an important role as a key factor and a driving force for the development of the economy. Not only in Vietnam but also in most other countries in the world, governments consider education as a top national policy. So why is education and training so important to the country's development strategy? The quality of Vietnamese education is really alarming in all aspects. If we don't recognize the true nature of the problem, if we just want to have great achievements, want our students to be rewarded and forget about the problem, the future of education will have a lot of defective products. The future of education is the future of the country, the future of every family. Therefore, each person in different positions but with the sincerity of education to join hands will hope for the change. The content of this article will revolve around the inadequacies of Vietnamese education about the status quo, about the reasons why Vietnamese education has not kept up with international friends, thereby proposing solutions for difficulties. the current challenges of the Vietnamese education industry, and the need for innovative reforms to fulfill the mission of the education sector. Good coordination between the three environments including family, school and society will be the key to solving the problem of improving the quality of education in Vietnam. That is the objective of this paper, as the solution improves the c

The process of interaction and exchange of material between continents and oceans in coastal areas (DVB) creates a dynamic balance on environment, ecology and natural resource structure. Due to anthropogenic impacts and climate change, this balance is disrupted and leads to many negative consequences. The coastal area of ​​Vietnam is located in the monsoon tropical region where large rivers with basins in six countries enter and the outer sea has ecological and environmental relations with the waters of many countries in the region. This is a very sensitive area and ecosystems, especially coral reefs, mangroves, seagrass beds, etc. very vulnerable to environmental impacts. Along with economic development and population growth, humanitarian activities have a major impact on the coastal environment. People, environment and coastal ecosystems are also affected by abnormal climatic and hydrological changes that have recently increased. Not to mention the risk of natural disasters, including volcanoes, earthquakes and tsunamis, has not been fully assessed. Environmental stresses and coastal catastrophes are generated not only locally but also from continents and oceans. Therefore, the strategy for coastal environmental protection needs to be viewed from the macro-relations of the continental-ocean interaction in the coastal region.

Some typical types of biofuels widely known today include: bioethanol (bioetanol), biodiesel (biodiesel), green diesel (diesel), biological kerosene (biokerosen-or reactive fuel). biological forces), other biological alcohols (methanol, butanol), bio ether, biogas, synthetic gas, solid biomass fuel. In fact, the two most important biofuels are bioetanol and biodiesel, because of the many properties they have: use for the two most common types of vehicles (gasoline and motor vehicles). diesel engine); has many properties similar to fossil fuels, but cleaner and cleaner; produced from abundant and renewable materials such as sugar, starch and animal and vegetable fats and oils. The paper presents results obtained from a method applied for improving the properties of pure bio-oil aiming a direct use as a fuel in conventional diesel engines. Some typical properties such as high viscosity, high surface tension, high density and high cloud point are considered to be improved within this study. Characteristics of the viscosity, density and the surface tension versus fuel temperature are established. Findings of this study provide a basis for calculation and design a heating system of bio-oil fuel and for improving some typical properties of this fuel in order to use directly in diesel engines of small generator sets or diesel engines used in agriculture, forestry fields or in small boats.

Environmental pollution in transportation is very serious. Finding alternative fuels is becoming increasingly urgent in order to minimize environmental pollution and diversify fuel sources for marine engines. In alternative fuels, bio-oils are considered as a potential fuel. The paper presents theoritical findings on application of exhaust energy for heating up biodiesel/bio-oil used in ship engines in order to raise the fuel’s viscosity and to improve the volatizing and mixing abilities with ambient air. This fuel heating system is designed basing on the energy balance between the required energy to raise the fuel temperature to the target one and the energy either directly obtained from the exhaust gas or gained from intermediate medium. Results of this study are potentials to direct the design and fabrication of this bio-fuels heating system for ship engines which can meet the operating conditions and safety issues of this kind of engines.

In the strategy of marine economic development, the maritime sector plays an important role, in which seaports are the nucleus of development, the focal point for receiving and transporting import and export goods and circulating to all regions of the country. Shipping now accounts for 90% of the volume of imports and exports and part of the goods to regions, the main artery in the system of transportation and distribution of goods of the economy. The maritime industry and the world are developing and developing both in terms of quality, quality and modernity. Special welds between the various types of materials always have a number of problems that need to be addressed in order to improve the quality of welding and the life of the equipment. This paper presents and classifies the materials used in the maritime industry.