Monitoring and evaluation of transformers are essential to prevent their insulation failure. In this paper, the use of 2-furan-carboxaldehyde (2-FAL) and methanol (MeOH) concentrations as the main products of paper insulation degradation, and insulation Condition markers, has been studied. In order to study the degradation process and production of degradation products, the thermal aging process of the transformer insulation system was implemented in laboratory Conditions. The results of laboratory studies show that in the early stages of degradation the amount of MeOH is significant compared to 2-FAL. Also, the estimation of the degree of polymerization (DP) in the early stages of degradation (DP>800) through MeOH concentration and with decreasing DP (DP <800) through 2-FAL concentration is closer to the real value. The results of studies performed on 35 distribution transformers confirm the production of significant amounts of MeOH in the early stages of degradation. Also, the estimated DP values for the studied transformers were obtained through 2-FAL and MeOH concentration. The results show that estimating the amount of DP through MeOH concentration is associated with a probability of error of about 9% compared to estimating DP through 2-FAL concentration.

Coronavirus by one kind of its surface proteins (spike protein) locks onto the human cells surface receptors and after entering and replication of its RNA in the host cells causes immune responses. Briefly, a vaccine which may be weakened or inactivated virus, provokes the immune system to be ready to fight an invasive pathogen. So far, various technologies have been applied to develop vaccines against SARS-CoV-2 all over the world. Such vaccines including “, Nucleic acid vaccines”, , “, Viral-vector vaccines”,and protein-based vaccines”, .

This research aimed to identify the key components influencing the development of Iranian digital sports games using the Race marketing model. The qualitative research method employed thematic analysis, employing a comparative approach and the creation of a thematic network. The study encompassed literature review and semi-structured interviews with 15 experts in marketing, manufacturing, government management, academia, and professional gaming, all grounded in the Race marketing model, until reaching theoretical saturation. For the "increasing brand awareness" theme, six interconnected elements emerged, including advertising and promotion content, promotion processes, promotion platforms, branding strategies, successful branding techniques, and essential supporting infrastructure. In the "audience interaction with the brand" theme, four integrated components were identified: product introduction appeal, gameplay platform attractiveness, game process engagement, and effective support and logistics.For "attracting potential audiences," five unified themes were recognized: game structure, domain-specific advertising, management prerequisites, game economics, and ensuring game security. In the "increasing customer relationship development" theme, six integrated elements surfaced: product and service quality, addressing customer needs, extensive advertising efforts, efficient communication channels, value chain integration within the game, and maintaining game security. Additionally, a thematic network was illustrated based on the Race marketing model. The study recommends that Iranian digital game managers, producers, and marketers focus on all identified factors concurrently. The results underwent scrutiny for acceptance, transferability, and validity through scientific evaluation methods.