The review of the literature shows that a total of 17 FUT1 alleles and four FUT2 alleles (Se(357), Se(357,716), Se(357 385), Se) have been identified in Chinese para-Bombay individuals. The four FUT1 alleles, h1 (547delAG), h2 (880delTT), h3 (C658T), and h4 (C35T; A980C) are most prevalent, which account for more than 90% of all allele counts and are essential to be involved when developing para-Bombay genotyping kit for Chinese.
BACKGROUND The COVID‐19 outbreak caused short‐term disruptions in the supply chain of fresh agricultural products (FAPs), which exposed the vulnerability of the existing FAP supply chain. With pandemic control being widely coordinated, the supply chain of FAPs was gradually optimized and improved. However, after the outbreak of COVID‐19, achieving an effective supply of FAPs in future pandemics has become a key issue. The present work therefore aimed to construct a three‐level supply chain based on the Stackelberg game model, consisting of suppliers, third‐party logistics (TPL), and retailers, to guarantee the supply of FAPs. COVID‐19 pandemic factors such as virus infection coefficients and pandemic prevention efforts were fully integrated into the model. RESULTS Compared with the wholesale prices of FAPs, preservation efforts and pandemic prevention efforts have huge impacts on the retail prices of FAPs. When suppliers are in the leading position, the quality assurance effort level is positively correlated with the optimal profit. Compared with this situation, when FAP retailers are in the leading position, TPL providers show higher levels of pandemic prevention effort and FAP preservation effort. With an increase in consumer preference for pandemic prevention, the profits of supply‐chain members when FAP retailers are in the leading position will gradually increase. CONCLUSION This study reveals an effective supply mechanism for FAPs in metropolitan areas during the COVID‐19 pandemic and describes the authors' experience of guaranteeing the quality and safety of FAPs for future pandemic cases. © 2021 Society of Chemical Industry.
The COVID-19 outbreak has exposed deficiencies in the supply chain of FAPs, which have also increased their vulnerability. As the COVID-19 epidemic continues to develop, the effective supply of FAPs during the epidemic prevention and control period has become a key part of the response to the epidemic in metropolitan areas. Based on the game theory, this study constructed a three-level supply chain consisting of suppliers, TPL service providers and retailers to guarantee the supply of FAPs in metropolises in the context of COVID-19 epidemic. By Stackelberg principle game theory, the optimal epidemic prevention effort level, preservation effort level, wholesale price, retail price and optimal profit result in the supply chain dominated by supplier and retailer are respectively solved. In this study, in addition to the characteristics of FAPs such as easy loss and perishable, COVID-19 epidemic factors such as virus infection coefficient and epidemic prevention efforts were fully integrated into the model to ensure the effective supply of FAPs in metropolitan areas. The main research conclusions are as follows. (i) In the context of COVID-19, compared with the wholesale prices of FAPs, the level of preservation efforts and epidemic prevention efforts will have a greater impact on the retail prices of FAPs in metropolitan areas. (ii) When the supplier is in the dominant position, the sensitivity coefficient of the quality assurance effort level is positively correlated with the optimal profit of the supplier. Compared with other members, they have stronger control ability and decision-making ability, so that their profits are greater than those of other members. (ii) Compared with suppliers who are in the leading position of guarantee and supply, when FAPs retailers are in the leading position of guarantee and supply, TPL service providers have a higher level of epidemic prevention efforts and preservation efforts for FAPs. At the same time, the quality effort level, market demand and retail price are all greater under the retailer-led guarantee. (iv) The profit of FAPs retailers is affected by the sensitivity coefficient of preservation effort level, epidemic prevention effort level and dominant guarantee status.The COVID-19 outbreak has exposed deficiencies in the supply chain of FAPs, which have also increased their vulnerability. As the COVID-19 epidemic continues to develop, the effective supply of FAPs during the epidemic prevention and control period has become a key part of the response to the epidemic in metropolitan areas. Based on the game theory, this study constructed a three-level supply chain consisting of suppliers, TPL service providers and retailers to guarantee the supply of FAPs in metropolises in the context of COVID-19 epidemic. By Stackelberg principle game theory, the optimal epidemic prevention effort level, preservation effort level, wholesale price, retail price and optimal profit result in the supply chain dominated by supplier and retailer are respectively solved. In this study, in addition to the characteristics of FAPs such as easy loss and perishable, COVID-19 epidemic factors such as virus infection coefficient and epidemic prevention efforts were fully integrated into the model to ensure the effective supply of FAPs in metropolitan areas. The main research conclusions are as follows. (i) In the context of COVID-19, compared with the wholesale prices of FAPs, the level of preservation efforts and epidemic prevention efforts will have a greater impact on the retail prices of FAPs in metropolitan areas. (ii) When the supplier is in the dominant position, the sensitivity coefficient of the quality assurance effort level is positively correlated with the optimal profit of the supplier. Compared with other members, they have stronger control ability and decision-making ability, so that their profits are greater than those of other members. (ii) Compared with suppliers who are in the leading position of guarantee and supply, when FAPs retailers are in the leading position of guarantee and supply, TPL service providers have a higher level of epidemic prevention efforts and preservation efforts for FAPs. At the same time, the quality effort level, market demand and retail price are all greater under the retailer-led guarantee. (iv) The profit of FAPs retailers is affected by the sensitivity coefficient of preservation effort level, epidemic prevention effort level and dominant guarantee status.
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