Analysis of the factors affecting thermal evolution of hot rolled steel during coil cooling

Analysis of Factors Affecting the Quality and Safety of Cross-border E-commerce Agricultural ProductsYuanbo JiaInner Mongolia University of Finance and Economics, Inner Mongolia, Hohhot, 010000Abstract: In recent years, China's cross-border e-commerce business has been developing strongly and the type of business is expanding to include agricultural products. However, quality and safety incidents of Chinese agricultural products are now frequent, which not only affect people's health, but also seriously affect the image and international reputation of Chinese agriculture. Therefore, by analysing the factors affecting the quality and safety of Chinese agricultural products in cross-border e-commerce, and proposing corresponding countermeasures, this paper helps to establish and improve the quality and safety regulation of Chinese transnational agricultural products.Keywords: Cross-border; E-commerce; Agricultural Products; Quality; Analysis DOI: 10.47297/wspciWSP2516-252744.20220603A s modern science and technology improves, more innovative technologies arebeing used in the types and processing of crops, enriching people's daily lives while creating new social dangers. And because agriculture is related to everyone's quality of life and health, if crops made in violation of the law are exported outside of China, at a time when China's traditional international trade growth is slowing and the foreign trade environment is declining, China needs to pay more attention to the quality of agricultural products exported from China if it wants to effectively protect its market share abroad, thus promoting the development of cross-border agricultural e-commerce.About the author: Yuanbo Jia (1989-), Male, Han nationality,Ordos City, Inner Mongolia, Master, Inner Mongolia University of Finance and Economics, Assistant Research Fellow, Research direction: Ideological and Political Education, Electronic Commerce.220Creativity and Innovation Vol.6 No.3 2022 1. Factors Affecting the Quality and Safety of Cross-border E-commerce Agricultural ProductsAt present, the quality and safety factors of agricultural products in cross-border agricultural e-commerce are mainly focused on the following aspects: (1) Chinese regulations and technical standards for agricultural products deviate from foreign countries, and domestic regulations related to the online marketing of modern agricultural products, especially cross-border marketing, are not perfect. There are many blind spots in the regulation of online food marketing, and the degree of internationalization of agricultural products' hygiene standards is low. (2) The relevant supervision and management is not perfect, the responsibilities are not clear and cannot be determined, the skills of all supervision and management personnel are not professional, the supervision is inefficient and favouritism is serious; (3) The entry and exit operations are cumbersome and obstructed in the cross-border export links, delaying the freshness period of commodities and preventing customs clearance and inspection services on time, resulting in the original perishable fresh and other domestic commodities increasing logistics distribution and storage costs and the rate of depreciation (4) China's frozen chain logistics base is fragile, basically relying on China's traditional room temperature shipping methods, the frozen chain logistics technology is lagging behind, lack of specialized personnel, and the flourishing development of third-party outsourcing services is sluggish; (5) China's various commodities are high-tariff, and there are high trade barriers.2. Countermeasures for Quality and Safety Regulation of Cross-border E-commerce Agricultural Products(1) Strengthening the construction of cold chain1) The development of industry standards for cold chain logistics. The state should unify the policy norms for the development of cold chain logistics enterprises. Due to the current inadequate market access requirements and the fact that various types of SMEs also share the huge profits of cold chain logistics, China needs to further regulate the technical standards and regulations of cold chain logistics. Strictly control the status quo of all kinds of unqualified and low-cost companies for chain transportation and naked transportation of frozen meat products at room temperature. In addition, the various technical specifications concerning cold chain logistics transport should also be further improved in terms of technical specifications for insulation of cold storage companies, food packaging marking, technical specifications for preservation of freshness, technical installation specifications for industrial equipment, etc. (2) Strengthening the construction of supporting technologies for cold chain transportation. In the information221Creativity and Innovation Vol.6 No.3 2022technology link, such as satellite navigation technology, wireless radio frequency communication technology, temperature and humidity and infrared remote sensing technology, etc. can ensure the regulation of the temperature of the storage environment and the scheduling of different functional transport vehicles, which can carry out on-site spot monitoring; in the product process link, such as vacuum origin pre-cooling technology, ice temperature origin pre-cooling technology, etc., which can improve product quality and extend the freshness period; in the logistics link, refrigerated logistics vehicles’ technology improvement made use of clean energy logistics, refrigeration and freezing isolation technology equipment, etc.; in the storage link, with automatic cold storage, gas-conditioned cold storage, multi-temperature cold storage and other technical equipment, it s more effective to extend the freshness of the time. However, the application of these technologies by Chinese cold chain transport and distribution companies is relatively small, and the overall development is quite different from that of the large overseas cold chain enterprises. (3) Guiding the development of third-party logistics enterprises. Due to the influence of technology protection policies, China's cold chain logistics market needs a lot of capital to support third-party logistics enterprises in order to achieve large-scale and professional development. China's cold chain logistics market has achieved the full range of the cold chain from source to home. In addition, we must be at the forefront of establishing a perfect after-sales service system. This is a thorny problem faced by any multinational agricultural products e-commerce company, but it can be solved by outsourcing to a third-party logistics enterprise The service level can be further improved. (4) Financial support and staff training. Cold chain transportation is different from general room temperature logistics, and its investment in human resources must be invested in a large amount of money and time in order to develop steadily. Therefore, the training of highly skilled personnel should not be neglected.(2) Supply chain and optimisation of passing customs processIn terms of marketing methods, order agriculture, collaboration between farmers and supermarkets, e-commerce and brand synergy should be carried out, through various innovative methods such as direct harvesting and direct marketing, online and offline marketing; in terms of product promotion, the selling points of products are discovered for the target customer groups, and social applications such as WeChat, Weibo, Facebook and Twiter, which are closest to customers, can be used in the promotion channels; in terms of warehouse management, by choosing the company's most applicable In terms of warehouse management, by choosing the most suitable warehouse and distribution management for the company, it can help the company to make the most optimal decisions in terms of transit storage and distribution scheduling. As can be seen, the management advantages of modern companies are not simply due to the reduction of intermediaries, but reflect all aspects of the company's activities throughout the economic cycle. We are actively222Creativity and Innovation Vol.6 No.3 2022 exploring new customs clearance methods suitable for the development of cross-border agricultural products e-commerce, improving the customs clearance operation service system, using information technology to improve the customs clearance process and gradually implementing paperless customs clearance; strengthening the business level training of staff, ensuring shift availability and setting up a four-hour customer service hotline to effectively improve the efficiency of business clearance; adopting a "detailed check and release, collecting application" mechanism for overseas e-commerce products. Application" mechanism.(3) Strengthening standardisationFirstly, take the initiative to master the agricultural application standards; secondly, speed up the introduction and implementation of more effective standards. According to the current Chinese agricultural technical standards system, the standards are too old, contradictions appear between the specification content and standards, uneven distribution of indicators, etc., the relevant units speed up the revision of outdated standards and the inclusion of more current applications of national agricultural standards and specifications for cross-border e-commerce; thirdly, make reasonable absorption and use of the standards. and conduct multiple studies and experiments to learn from or improve the transformation into technical standards for agricultural products suitable for China; fourth, do a good job of communication and coordination between different scientific and technological institutions in different fields.(4) Legislation and creditOur government should not only promote the development of policies and regulations for cross-border e-commerce agricultural products, but also actively deploy the construction of a three-in-one government credit system for the state, enterprises and individuals. The construction of international e-commerce and the construction of government credit systems promote each other. This is because e-commerce cannot be achieved without the honest maintenance of government at all stages of screening, consultation, settlement, logistics and after-sales service. On the other hand, the realisation of sales is not only about selling products, but to a greater extent about marketing the reputation of merchants and companies. A truly complete database of business reputation will be of great help to both users and companies; in addition, the practice and use of e-commerce has resulted in a huge influx of data that will help accelerate the soundness of the commercial credit system.(5) Consumer rightsFirstly, consumers should choose to trade on professional online platforms and check the network letter camp degree and licence documents; then, after choosing the product and saving the corresponding historical order information, once the product quality problems are found, they can complain to the platform in223Creativity and Innovation Vol.6 No.3 2022the first instance; again, in addition to what can be checked on the outer packaging, consumers can also make use of test cards and other means when necessary, in order to prevent accidental consumption or expired and spoiled food from causing. Finally, customers can participate in public service events organised by the China Consumers' Association and the food industry to promote general knowledge of food safety management.(6) Emphasis on the development of talent training for agriculture and cross-border e-commerceIn recent years, due to the rapid development of cross-border e-commerce, the staffing mechanism of the agricultural market has not been adjusted in time, thus leading to a shortage of staff supply, which requires the establishment of a sound cross-border e-commerce talent system through the joint collaboration of multiple parties, including government departments, higher education institutions and agricultural companies. On the one hand, schools also need to further strengthen entrepreneurial guidance and professional skills training for university students in cross-border e-commerce in order to achieve a seamless connection with cross-border e-commerce talents in industries covering agricultural products processing; on the other hand, local government departments should also guide the talent cultivation market and actively carry out training programmes for cross-border e-commerce talents in rural areas in order to cultivate rural cross-border e-commerce personnel who understand both foreign trade and agricultural technology. On the other hand, local government departments should also guide the talent cultivation market and actively carry out training programmes for cross-border e-commerce talents in rural areas, so as to cultivate rural cross-border e-commerce personnel who understand both foreign trade and agricultural science and technology.3. ConclusionDomestic and international e-commerce companies have launched online platforms for cross-border agricultural trading, and companies in China from around the world are also enthusiastically cooperating with major agricultural e-commerce platforms at home and abroad, promoting the vigorous development of agricultural international trade in cross-border e-commerce in China. In the current situation where the development of traditional agricultural international trade is slowing down and the international trade environment is becoming increasingly severe, the development of agricultural cross-border e-commerce can reshape the supply chain of agricultural international trade, effectively reduce the central link of international trade and agricultural flow costs, and improve the efficiency of agricultural international trade. At the same time, it can also promote national reform of agricultural international trade, and promote the transformation and upgrading of agricultural international trade.224Creativity and Innovation Vol.6 No.3 2022References[1] Rui Baojuan. "Constraints and Coping Strategies for the Development of Cross-bor-der E-commerce of Agricultural Products in China under the New Situation" [J]. Business and Economic Research, 2022(08):157-59.[2] Shi Jing. "Evaluation of the Competitiveness and Development Strategy of Agri-cultural Products Cross-border E-commerce Industry under the New Development Pattern of Double Cycle" [J]. Business Economic Research, 2022(04):157-60. [3] He Lunfeng, Zeng Rui. "Research on the Development Path of the Operation Modeof "Rural E-commerce + Geographical Indication of Agricultural Products" - an Analysis Based on SWOT-CLPV Model"[J]. Journal of the Party School of the Yunnan Provincial Committee of the Communist Party of China, 2022, 23(01):161-72.[4] Feng Xuebin, Yu Miao, Zhang Jianying. "Research on the Integration and Linkageof Cross-border E-commerce for Agricultural Products in China in the Context of "One Belt and One Road""[J]. Business and Economic Research, 2021(20):147-50.[5] Sui Bowen, Zhuang Lijuan. "Cross-border Agricultural Products Supply Chain:ACornerstone for the Development of China-ASEAN Agricultural Products Circula-tion Industry"[J]. China Circulation Economy, 2016, 30(02):67-74.225。

CFDA SE (细胞增殖示踪荧光探针) 产品编号产品名称包装C1031 CFDA SE (细胞增殖示踪荧光探针) 5mg产品简介：CFDA SE 的全称为Carboxyfluorescein diacetate, succinimidyl ester ，是一种近年来被广泛应用的细胞增殖检测用荧光探针，也可以用于细胞的荧光示踪。

基于CFDA SE 荧光标记的细胞增殖检测和[3H]-thymidine 掺入、BrdU 标记获得的检测结果完全一致，但同时可以提供更多的细胞增殖信息。

使用CFDA SE 检测可以提供整个细胞群中有多少比例的细胞分裂了1次、2次或更多次数，同时如果和其它荧光探针联用，可以获取不同分裂次数细胞的其它相关信息。

CFDA-SE 的分子式为C 29H 19NO 11，分子量为557.47，CAS number 为150347-59-4。

CFDA SE 可以通透细胞膜，进入细胞后可以被细胞内的酯酶(esterase)催化分解成CFSE ，CFSE 可以偶发性地(spontaneously)并不可逆地和细胞内蛋白的Lysine 残基或其它氨基发生结合反应，并标记这些蛋白。

在加入荧光探针CFDA SE 后大约24小时，即可充分标记细胞。

被CFDA SE 标记的非分裂细胞的荧光非常稳定，稳定标记的时间可达数个月。

CFDA SE 标记细胞的荧光非常均一，比以前使用的其它细胞示踪荧光探针例如PKH26的荧光更加均一，并且分裂后的子代细胞的荧光分配也更均匀。

由于CFDA SE 标记细胞的荧光非常均匀和稳定，每分裂一次子代细胞的荧光会减弱一半，这样通过流式细胞仪检测就可以检测出没有分裂的细胞，分裂一次的细胞(1/2的荧光强度)，分离两次的细胞(1/4的荧光强度)，分裂三次的细胞(1/8的荧光强度)以及类似的其它分裂次数的细胞。

采用CFDA SE 通过流式细胞仪检测获得的检测结果参考右图。

每一个峰代表一种分裂次数的细胞，从右至左的峰通常依次为分裂0次、1次、2次、3次等次数的细胞。

Recently, there is an interesting survey about the influences of various factors on work performance in two age groups: the people ranging from 18 years old to 30 years old and the people ranging from 45 years old to 60 years old. The result shows that there are similarities and differences between the two age groups in terms of the factors affecting work performance.For one thing, there are similarities between the two age groups respecting the factors contributing to their work performance. Both as workers, they share certainly the demands of a worker. First, because employees work to make money for a living, they, naturally, love to earn more money to live a more comfortable life. Thus if more money can be earned, they will work more positively and diligently. Thus for the both groups, the similar factor affecting performance is essentially salary. Second, people work not only to sustain their existence but to enjoy the pleasure, value, and the fulfillment their work brings to them. It can be imagined that one cannot work well when the job is hated by him and he also cannot do a good job in a terrible environment. So job satisfaction and work environment are both important factors that impact their work performance at the same degree. Third, the two groups, as workers, are both willing to work in a united team rather than in an internal-conflict. Team spirit can undoubtedly stimulate one's enthusiasm and initiative for work for if workers in a corporation always try every means to exclude others, villains will hold sway while talents with abilities are frustrated. In that sense, the whole choppy atmosphere in a company give rise to all the workers' depression and distraction from their jobs and so team spirit contributes to the work performance of both of the two age groups.For another, there are differences between the two age groups concerning the factors influencing their work performance. First, it is the distinction between the two groups' physical conditions that leads to their different expectations to their jobs. The young, are energetic whereas the old are weak. As a consequence, chances for personal development or promotion prospects may less cared about by the elderly since they have not enough energy to cope with the business even if they are promoted. For the youth, however, so much vitality motivates them to make progress in their career. Second, the young people's and the elderly people's different mentalitycauses the differences as regards to factors affecting their work performance. Take job security for an example. The former is being on the stage of f ocusing on their work after years of accumulation of knowledge in that only if they have a stable job to guarantee their living quality, can they then unworriedly develop other things like forming a family or having a child. So at this time, the first regard for them is an appropriate and stable job. On the contrary, the latter attach less importance to job security compared with the young since they can bother to change jobs with a steady family, enough income and offspring who can take care of themselves well.All in all, based on the similarities and differences, some common measures must be taken to improve work performance. In the meanwhile, we must also take different measures according to the ages of the workers involved.。

Analyse the factors which determine the demand for labour.The demand for labour is actually a derived demand; this means that the number of workers a firm wish to employ is derived from the revenue that can be earned from the sale of what is produced. So to answer this question I will look at the determinants of the revenue the firm makes from hiring a worker and do this via the marginal revenue product theory (MRP).According to MRP theory the demand for a worker is calculated by the formula MR x MPL, where MR is the marginal revenue a firm generates selling each unit of production (the price it sells its finished product) and MPL is the marginal product of labour, which is defined as the additional units that an extra worker produces. A firms demand for labour can be illustrated by the diagram below, where a firm will hire different levels of worker depending on the wage rate and changes to MR or MPL will cause a shift in the whole line outward on inward.The diagram above allows us to analyse what happens as wage rates change. Assuming ceteris paribus, if the wage costs for a firm increase then a firm will respond by demanding less staff. This is shown in the diagram above as a movement along the curve; at Wage W1 a firm hires Q1 workers, if wages increases to W2, then the number of workers hired will fall to Q2. The reason for this is that firms are trying to maximise profits, if wages become more expensive than the price of the substitute for labour, capital, becomes relatively more affordable so firms will switch their method of production.I’m now going to anal yse what can shift the whole MRP line by looking first at what determines the MR part of the formula. Any factor that changes the price of the final product will change the value of the marginal revenue a firm can earn. All of the determinants of demand for the product will affect the price and therefore MR. For example, if there is a change in tastes of fashion towards the good being produced, then this will lead to a shift outwards in demand for the good being bought, which pushed up the price and MR.This is illustrated below, even though the wage rate remains the same,the increase in demand for the product has shifted the MRP line outfrom D1 to D2 and the quantity of labour hired has increased from Q1to Q2. This is also the case of any other determinant, including theincomes of the population, a reduction in the price of a complement,an increase in the price of a substitute.The same shift would occur if a firm believed future demand (rather than current demand) was going to increase. This is because the firm will expect the price of the product to increase in the future so the firmwill be willing to hire more staff now to build the product so it can meet the increased future demand.Finally a firm might see the same shift in MR purely from an increase in price of the final product (movement along the product demand curve, not a shift), which might have arisen due to a decrease in overall supply in the market (a competitor goes out of business).Focusing now on the Marginal product of labour, this is calculated by looking at the total costs of hiring the worker compared to their productivity. Although wages are shown as a movement along the graph, changes to any other labour costs that a firm might incur are represented by a shift in the MRP line. For example, ifa firms national insurance or pension contributions were pushed up, if everything else remains the samethat worker is now more expensive to hire. This means that a firm will choose to hire less workers than before (from Q2 in the diagram above back to Q1) and demand will contract, shifting from D2 to D1. Employment can though increase if a workers productivity increases. Productivity means how much a worker actually producers, which could increase if a worker becomes better qualified or trained or is given some complementary capital to speed up his production speed. If productivity increases then the worker is making more for the company in the same time which will push up the overall MRP and demand will shift out from D1 to D2 and employment will increase. In reality, where the MRP curves shifts in or out will depend on whether overall labour costs are increasing slower or faster than productivity. If costs go up by 3% but productivity by 5%, there has been a net 2% gain meaning the curve will shift out.Finally the MRP can shift if the substitute for labour, capital, changes. So even if the wage rate and productivity for a worker stay the same, they may find that the demand for their labour will contract if afirm can suddenly purchase robotic equipment for example for a cheaper price. As this will now be a companies cheapest production method, demand for labour will fall, shifting the demand inward.Although MRP is a useful tool for analysing how labour might be demand in theory, it’s limitations mean that reality the demand for labour might not be as scientific. For example, one limitation of MRP is when it is hard to identify the value of a single worker as they work as a team, or because the worker is doing a job that is hard to value in monetary terms (like a surgeon). If the line between capital and labour productivity becomes blurred, this can too be an issue.。