The air transport

The lack of country-specific greenhouse gas (GHG) emission factors vehicles in Vietnam makes the emissions inventory in the transport sector more difficult. This study developed the country-specific GHG emission factor in terms of CO2 equivalent for motorcycles (MCs) in Hanoi to overcome the above impediment.

11p vibecca 01-10-2024 2 0   Download

This paper presents the applying of sound barrier wall for highways in Viet Nam studied from existing experiments in the world. Nowadays, pollution sources come from traffic noises, water sources and air environment. Especially, traffic noises such as transportations, trains and airplanes are much serious and effect population and country. On road traffic systems, noise generated by vehicles is always in high level and give discomfort to residents who live around both sides of highways.

7p vibecca 01-10-2024 0 0   Download

Air pollution is getting worse in Viet Nam in recent years, particularly in big cities. The most important source of pollution are traffic and industrial activities. The paper "A Review on Current Status of Urban Air Pollution in Ho Chi Minh city and Ha Noi" reviews air pollution situation in Ho Chi Minh city and Ha Noi. We also recommend policies to tackle the problem: (i) upgrade the national air quality standard, (ii) install systematic and high-quality network of monitor stations, and (iii) remove means of transport that unmet emission regulations.

11p xuanphongdacy09 29-09-2024 3 1   Download

Daily personal exposure to black carbon (BC) in different microenvironments in Hanoi, Vietnam was quantified for the first time. In this study, a portable instrument, microAethe® model AE51, was used to continuously measure BC concentrations in various microenvironments within buildings and transportation modes.

9p viyoko 20-09-2024 2 1   Download

This study aims to evaluate the microbial contamination level and identify bacterial colonization of the operating room in the hospital. Methods: Three sampling procedures were used in this study, which includes swabbing, air sampler and contact agar plate. Collected samples from 8 ORs were transported and microbiologically processed using standard procedures. Bacteria were identified by morphological, biochemical tests and Vitek 2 Compact system.

6p vinatisu 29-08-2024 7 0   Download

The increasing use of Intelligent Transport System (ITS) can enable very close vehicle spacings which generally results in a net drag reduction for the resulting convoys. The majority of vehicle development has, to date, been for vehicles in isolation, thus the study of interaction effects is becoming increasingly important. The main objective of this research is to investigate the use of Computational Fluid Dynamics (CFD) for understanding convoy aerodynamics and to further the understanding of airflow interaction between vehicles via CFD.

154p runthenight07 01-03-2023 7 3   Download

Microclimate is the physical state of the atmosphere in the narrow space of the workplace including the factors temperature, humidity, radiant heat and speed of air transport. These factors must be guaranteed in certain limit, consistent with human physiology.

32p redemption 29-12-2021 4 0   Download

The reckless use of fossil fuels causes a lot of problems such as depletion of fossil fuels, rising oil prices, air pollution, and fine dust. 27% of the world's major energy sources are used for transportation, and most of the transportation fuels are used as fossil fuels.

9p lucastanguyen 01-06-2020 23 1   Download

The methodology is devised by coupling different codes. The study of weather conditions as part of the data of the site will determine the relative concentrations of radionuclides in the air using ARCON96.

7p christabelhuynh 30-05-2020 13 0   Download

The two most important environmental hazards faced by humankind today are air pollution and global warming. Both have a direct link with our current overdependence on fossil fuels. Pollutants produced from combustion of hydrocarbons now cause even more health problems due to the urbanization of world population

626p tuyetmuadong2013 08-04-2013 82 15   Download

Air travel is continuing to experience the fastest growth among all modes of transport. Increasing total fuel consumption and the potential impacts of aircraft engine emissions on the global atmosphere have motivated the industry, scientific community, and international governments to seek various emissions reduction options. Despite the efforts to understand and mitigate the impacts of aviation emissions, it still remains uncertain whether proposed emissions reduction options are technologically and financially feasible....

160p muakhuya 03-09-2012 65 6   Download

The budget deficit equivalent to total government spending tax minus total government spending revenue.If income tax independently, but depend on the net income, The relevance of seaports in the efficient working of an economy cannot be understated since all goods and passengers transported by sea require the use of, at least, two ports. In the majority of countries, most international trade (export/import), and in some cases also large shares of domestic trade, is done through maritime transport.

9p nhatro75 09-07-2012 69 6   Download

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học quốc tế cung cấp cho các bạn kiến thức về ngành y đề tài: The Effect of Active Warming in Prehospital Trauma Care during Road and Air Ambulance Transportation - a Clinical

25p toshiba18 31-10-2011 56 4   Download

Up to the early 1960s, passenger traffic through even the world’s largest airport was so small. There are economies of scale on the use of fixed equipment such as baggage systems and check-in decks and with movable apron equipment. Similar economies are found with airport authority, airline, and airport tenants’staff requirements.

31p congaumap 18-03-2011 261 82   Download

Đã phát quang để hạ cánh? Thương hiệu hàng không và Trung Quốc Đây là khoảng thời gian khó khăn đối với các thương hiệu hàng không, nhưng nếu thương hiệu nào đó thu hút được khách hàng Trung Quốc, nó hoàn toàn có thể vượt qua “giai đoạn sống còn” này – Mikko Rautio, Trưởng cơ quan đại diện của Finnair tại Trung Quốc Theo International Air Transport Association, sau vài tháng tăng trưởng, vận tải hàng không trên toàn cầu đã đi xuống, đây là đợt suy giảm đầu tiên trong vòng 5 năm qua, lượng hành khách giảm...

9p messi1357 24-02-2011 81 5   Download

Explore the environmental challenges of the Rocky Mountain Arsenal in Colorado as it transitions to a National Wildlife Refuge. • Study the environmental effects, chemical fate and transport, receptors and remedial controls of the Chem-Dyne site in Hamilton, OH. • Explore the environmental clean-up and transition of Midway Island from a Naval Air Station to a sanctuary for over 2,000,000 nesting birds.

10p nguyenvanquan037 07-01-2011 73 4   Download

Kinds of transportation, Traffic laws in the USA. Kinds of transportation: Road transportation, Air transportation, Rail transportation, Water transportation. The work of the railroad pioneers in America became the basis for a great surge of railroad building halfway through the nineteenth century that linked the nation together as never before. Railroads eventually became the nation’s number one transportation system, and remained so until the construction of the interstate highway system halfway th...

32p sunflower90 15-12-2010 115 11   Download

Transportation is made ​​of material production and transportation of goods. Transportation is divided into road transport (often referred to as the transport), water transport (shipping), air transport. Road transport including trains, cars and roads. Water transport, including maritime transport and inland waterway transport. Use of air transport aircraft

75p nguyenquocdat78 02-10-2010 153 45   Download

Psychrometrics deals with the thermodynamic properties of moist air, which is the final heat transport medium in most air conditioning processes. The use of psychrometric tables and charts allows the designer to make a rational and graphic analysis of the desired air conditioning processes.

16p babyuni 16-08-2010 109 17   Download

All air-handling units (AHUs) and many terminal units, if they are not self-contained, require a source of heating and/or cooling energy. This source is called a central plant, and the means by which thermal energy is transferred between the central plant and the AHU is usually a fluid conveyed through a piping system. The fluids used in HVAC practice are steam, hot or cold water, brine, refrigerant, or a combination of these. The equipment used to generate the thermal energy is described in Chap. 7. In this chapter we discuss the transport systems. ...

46p babyuni 16-08-2010 120 32   Download