CAN THO CITY DEPARTMENT OF SCIENCE AND TECHNOLOGY
Bề mặt đường phố góp phần gây ô nhiễm không khí
Trong nghiên cứu đăng trên tạp chí Science Advances vào tháng 9/2020, các nhà khoa học tại Đại học Yale (Mỹ) phát hiện nhựa đường giải phóng nhiều hợp chất hóa học gây ô nhiễm không khí trong điều kiện nắng nóng, bao gồm chủ yếu là các chất ô nhiễm dạng sol khí hữu cơ thứ cấp (SOA).

Ảnh: Dailynewsegypt.

Trong phòng thí nghiệm, nhóm nghiên cứu cho các mẫu nhựa đường tiếp xúc với phạm vi nhiệt độ từ 40 – 200°C, đồng thời theo dõi lượng khí thải thoát ra từ nhựa đường. Họ phát hiện lượng phát thải SOA tăng gấp đôi khi nhiệt độ ban đầu tăng lên từ 40°C đến 60°C. SOA tiếp tục tăng lên khoảng 70% sau mỗi lần tăng 20°C trong phạm vi nhiệt độ 60 – 200°C.

“Nhiệt độ trong các thành phố ngày càng nóng lên do biến đổi khí hậu và hiệu ứng nghịch nhiệt đô thị làm tăng mức độ ảnh hưởng của nhựa đường đối với chất lượng không khí đô thị theo thời gian”, Drew Gentner, trưởng nhóm nghiên cứu, cho biết.

Trước đây, SOA thường không được báo cáo khi đề cập đến các chất ô nhiễm ở khu vực đô thị. Vì vậy, Gentner khuyến cáo rằng chúng ta nên đưa thành phần này vào các tính toán trong tương lai về chất lượng không khí mà chúng ta đang thở.

Quốc Hùng

www.khoahocphattrien.vn (ctngoc)
Most viewed news

Enhancing teaching and learning capacity through artificial intelligence

In the morning of May 30 in Hanoi, the United Nations Children's Fund (UNICEF), the Ministry of Education and Training, the National Innovation Center (NIC) and STEAM for Vietnam held a National Forum on Artificial Intelligence in Education, with the theme "Promoting innovation: Enhancing teaching and learning capacity through AI".

Hai Phong promoted connection between technology supply and demand

In the morning of May 30, Hai Phong Department of Science and Technology organized a session connecting technology supply and demand among research institutions and businesses inside and outside the city.

Building AI human resources

Ho Chi Minh City is actively promoting digital transformation and applying artificial intelligence (AI) to build a smart city. However, the city's AI human resources are still limited in quantity and quality, with only about 1,000 graduates from 14 related training programs.

Applying AI to solve administrative procedures

The implementation of Hanoi's Public Administration Service Center aims to transform the management model to non-administrative boundaries by establishing branches in large districts.

Developing Thoi Hung custard apple brand, Co Do district, Can Tho city

Can Tho City Department of Science and Technology organized a Mid-term Evaluation Council for the science and technology task of developing the Thoi Hung Soursop Brand, Co Do District, Can Tho City. The Council was presided by Dr. Ngo Anh Tin - Director of the Department of Science and Technology. The study was carried by Nguyen Khac Phi - Branch of Investip Industrial Property Joint Stock Company (Hanoi City), and Tran Thi Thien Thu - Can Tho City Farmers' Association.

Current status and solutions for developing smart tourism systems to attract tourists to Can Tho city - Strategic direction for tourism industry in the digital age

In the afternoon of June 5, 2025, Can Tho City Department of Science and Technology held a meeting of the City-level Council for the acceptance evaluation of the social science project "Current status and solutions for developing a smart tourism system to attract tourists to Can Tho City". Dr. Ngo Anh Tin - Director of Can Tho City Department of Science and Technology was the Chairman of the Council. The project was carried out by Prof. Dr. Ha Nam Khanh Giao; Vietnam Aviation Academy was an implementing unit.

Conference to discuss the organizational arrangement of the Department of Science and Technology when merging Can Tho City, Soc Trang Province, and Hau Giang Province

In the afternoon of May 29, 2025, leaders of Departments of Science and Technology of Can Tho City and Hau Giang and Soc Trang provinces had a meeting to discuss plans to rearrange and reorganize the apparatus of the Department of Science and Technology after merging and consolidating the areas of these three localities.

Selection of scientific and technological project "Research on microbial preparations to decompose starch or food additives sodium benzoate in wastewater"

In the morning of May 29, 2025, Can Tho City Department of Science and Technology held a meeting of the Council for selecting organizations and individuals to preside over the city-level science and technology project "Research on microbial preparations to decompose starch or food additives sodium benzoate in wastewater.” The study will be carried by Dr. Nguyen Thi Phi Oanh. Can Tho University is an implementing agency.

Evaluation and acceptance of the scientific and technological project "Research on diversifying processed products from jackfruit (Artocarpus heterophyllus LAM)"

In the afternoon of May 27, 2025, Can Tho City Department of Science and Technology held a meeting of the Advisory Council to evaluate and accept the results of the implementation of the scientific and technological project "Research on diversifying processed products from jackfruit (Artocarpus heterophyllus Lam)." The project was carried out by Associate Professor, Dr. Bach Long Giang. Nguyen Tat Thanh University was an implementing agency; Science and Technology Advances Application Center, Vietnam - Korea Industrial Technology Incubator were coordinating units.

Related news
CAN THO CITY DEPARTMENT OF SCIENCE AND TECHNOLOGY

Copyright @ 2021 belongs to the Can Tho City Department of Science and Technology
Address: No. 02, Ly Thuong Kiet, Tan An Ward, Ninh Kieu District, Can Tho City
Phone: 0292.3820674, Fax: 0292.3821471; Email: sokhcn@cantho.gov.vn
Head of the Editorial Board: Mr. Tran Dong Phuong An - Deputy Director of the
Can Tho City Department of Science and Technology

Copyright © 2021 All rights reserved | This template is made by CASTI'1987