Crude oil is a mixture of various hydrocarbons and is classified as light oil or heavy oil. Heavy oil is considered to have a high development value, comparable to the residual recoverable reserves of light oil worldwide. Reducing development costs and maximizing heavy oil recovery from underground are common challenges for the oil industry. There are two methods for recovering heavy oil: thermal recovery and non-thermal recovery. This paper explains the development technology and technical points of heavy oil.
Tourism resources are the material and non-material carriers to attract tourists. Tourism resources are developmental and innovative, and they are the dynamic basis and source of the sustainable development of the tourism economy. The determination of tourism resources mainly depends on (1) the characteristics and plasticity of tourism resources, and (2) the changing trend of tourism market demand. This paper summarizes the classification and regional distribution characteristics of tourism resources in Japan. This paper has a certain academic value for further understanding the definition and cognition of Japanese tourism resources.
A data paper is a type of academic article, which has been highly recognized by the academic circles. The purpose of the data paper is to highlight the academic value of data resources and promote the effective use of data resources through the description of data resources, and acquisition methods. Data papers, which include natural sciences and social sciences, have become an important type of article in academic exchanges. However, for most scientists and technicians, data paper is a relatively unfamiliar concept. Based on this, this paper focuses on the conceptual connotation, basic characteristics, main classification, and quality control of data papers, and then explains the difference and relationship between data papers and research papers. This paper plays a certain reference role in the cognition of data papers.