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近年爆发的贸易争端与新冠肺炎疫情，对世界油菜籽及其加工品的生产、贸易格局产生了一定影响，研究这一问题对保障中国油菜籽及其加工品进口供应链安全具有重要意义。总结分析了世界油菜籽及其加工品生产、贸易格局变动特征，实证分析了主要进出口国（地区）的显示性比较优势与贸易互补性，探讨了贸易争端与新冠肺炎疫情对世界油菜籽及其加工品生产、贸易格局的“双重冲击”。主要结论为：中长期看，“双重冲击”不会大幅改变基于比较优势的世界油菜籽及其加工品的生产、贸易格局；短期内，进出口大国之间的贸易争端将加剧国别替代，中国与加拿大、俄罗斯、澳大利亚的贸易规模将逐渐此消彼长；新冠肺炎疫情增加了贸易成本和供应链风险，对提升跨国物流与供应链绩效提出了更高要求。 In recent years, the outbreak of trade disputes and the epidemic situation of COVID-19 has a certain impact on the production and trade pattern of rapeseed and its processed products in the world. The study of this issue is of great significance to ensure the security of the import supply chain of rapeseed and its processed products in China. The characteristics of changes in the production and trade patterns of rapeseed and its processed products in the world were summarised and analysed, the demonstrated comparative advantages and trade complementarities of major importing and exporting countries(regions) were empirically analysed, and the "double impact" of trade disputes and the epidemic situation of COVID-19 on the production and trade pattern of rapeseed and its processed products in the world was explored. The main conclusions are as follows: in the medium to long term, the "double impact" will not significantly change the production and trade pattern of rapeseed and its processed products in the world based on comparative advantage. In the short term, trade disputes between major importing and exporting countries will intensify country substitution, and the scale of trade between China and Canada, Russia and Australia will one fade and the other grow. The epidemic situation of COVID-19 has increased trade costs and supply chain risks, and put forward higher requirements for improving the performance of cross-border logistics and supply chain.

为合理开发利用四川省凉山州德昌县的核桃资源，对该产地采摘的10种核桃及其油脂品质进行对比分析，检测了核桃横径、平均果质量、出仁率，核桃仁水分含量、粗脂肪含量、出油率，核桃油酸值、过氧化值和脂肪酸组成。结果表明：10种核桃的平均果质量为7.76~17.03 g，横径为29.60~48.17 mm，出仁率为40.76%~57.39%；核桃仁水分含量均低于5%，粗脂肪含量为57.54%~6926%；核桃油过氧化值与酸值均符合国标要求，脂肪酸组成以不饱和脂肪酸为主，棕榈酸、硬脂酸、油酸、亚油酸和α-亚麻酸含量分别为5.25%~5.93%、2.17%~3.85%、27.32%~4450%、42.22%~57.13%和4.43%~6.44%。综合考虑各项因素，德昌37号、德昌7号和德昌11号更适合用于加工生产核桃油。 For the rational development and utilization of walnut resources in Dechang county, Liangshan prefecture, Sichuan province, 10 walnuts and their oil quality in Dechang county were compared and analyzed. The horizontal diameter, average fruit weight and kernel rate of walnut, moisture content and crude fat content, and oil yield of walnut kernel, acid value, peroxide value and fatty acid composition of walnut oil were determined. The results showed that the average fruit weight, horizontal diameter and kernel rate of 10 walnuts was 7.76-17.03 g, 29.60-48.17 mm and 40.76%-57.39% respectively; the moisture content of walnut kernel was all less than 5%; the crude fat content of walnut kernel was 5754%-69.26%; the peroxide value and acid value met the requirements of the national standard; the fatty acid composition was mostly unsaturated fatty acid, and the contents of palmitic acid, stearic acid, oleic acid, linoleic acid and α-linolenic acid were 5.25%-5.93%, 2.17%-3.85%, 27.32%-44.50%, 42.22%-57.13% and 443%-6.44% respectively. Considering all factors, Dechang 37, Dechang 7 and Dechang 11 are more suitable for processing and producing walnut oil.

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Sarcopenia is a disease mainly characterized by a decrease in skeletal muscle mass and muscle strength in the elderly population and chronic disease patients. Its main pathogenic factors include endocrine metabolic disorders, insufficient physical activity, chronic inflammation, etc. Recently, the impact of sleep disorders on sarcopenia has begun to receive attention, more studies have shown a correlation between sleep disorders and sarcopenia. Sleep disorders can lead to circadian disorders and thus affect the secretion of hormones such as insulin and sex hormones, as well as promote the secretion of pro-inflammatory inflammatory factors, all of which can lead to abnormal synthesis and breakdown of skeletal muscle proteins and may cause the development of sarcopenia. Therefore, exploring the relationship between the two and targeting sleep disorders may be effective in the prevention and treatment of sarcopenia and is a potential treatment strategy to intervene in the development of sarcopenia. [ABSTRACT FROM AUTHOR]

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We introduced a Tomato Orchard Visual Feature Management System based on the . NET platform, aimed at improving the efficiency of tomato detection and recognition and promoting the intelligent development of agricultural production. With the development and popularization of information technology, more and more agricultural production activities are beginning to shift towards digitization and intelligence. At the same time, with the acceleration of population growth and urbanization, people's demand for vegetables and fruits is increasing, and the requirements for fruit quality are also increasing. As one of the important economic crops in modern agriculture, tomato cultivation and management are crucial for fruit farmers. In order to improve the production efficiency and quality of tomato cultivation, the system was used to help fruit farmers manage the entire process of tomato cultivation. Taking a tomato orchard located in the Lushunkou District of Dalian of Liaoning Province as an example, the system framework, including the system's data results and framework, the processing and data analysis of sensor data and image data, was constructed to achieve real-time monitoring and management of the growth status and quality of tomatoes in the orchard, improving the production efficiency and quality of the tomato orchard, and increasing the production and economic benefits of fruit farmers. [ABSTRACT FROM AUTHOR]

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Accurate monitoring of crop spatial distribution in topographically complex areas is of great significance for guiding agricultural management production and reasonable allocation of resources. However, scattered crop distribution and high spatial heterogeneity pose challenges for precise classification. The objective of this study was to explore a method for simultaneous precise identification of multiple crops with multi-temporal high-resolution satellite data under complex terrain conditions, thus further providing a theoretical and practical basis for crop identification in Chongqing city area and the complex low hills area in southwest China. The western Chongqing was selected as the study area. First, a multi-scale segmentation algorithm was adopted to construct homogeneous units from fields of the same feature type. This approach helped to achieve high accuracy classification by avoiding overly fragmented classification results based on pixel classification. Secondly, the multi-temporal Sentinel-2/MSI remote sensing images were used to explore the weathering patterns and characteristic parameters during the fertility period of major food crops. The spectral indices, such as NDVI, RVI and NDWI, were constructed to compare the differences in remote sensing spectral information of different crop types at various fertility periods based on ground sample points. Such information was then combined with the topographic features to determine the optimal combination for crop identification. Finally, an object-oriented decision tree logical classification rule set was established to extract major grain crop growing areas. The results showed that, (1) the multi-scale segmentation method was an effective approach that can make crop identification on a field basis. In addition, the vegetation edge segmentation was optimal at a segmentation scale of 30 and a compactness and shape factor of 0.5. (2) The target feature discrimination threshold was established by combining the spectral feature indices of NDWI in April, RVI in June, NDVI in August and NDVI in August with the topographic features such as altitude and slope. The overall accuracy of the classification reached 90.8%, being 85.7%, 83.3% and 80.7%, for paddy rice, maize, and sweet potato, respectively. This paper showed that the crop planting area identification method based on multiple spectral indices combined with topographic features can achieve high recognition accuracy and has practical significance. [ABSTRACT FROM AUTHOR]

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Phenotypic plasticity of plants can reveal not only the influence of habitat but also its growth strategy. To study the phenotypic plasticity and ecological adaptability of Bombax ceiba in heterogeneous habitats, this paper analyzed height, stem height under branch, crown diameter and leaf area of different diameter class Bombax ceiba in dry-hot valley and tropical rain forest area by methods of Pearson correlation analysis, least significant different and ANOVA analysis. The results indicated that the leaf area of Bombax ceiba decreased with the increase of DBH, while the other characteristics increased. The height and leaf area in Xishuangbanna were always larger than Yuanjiang, but the stem height under branch and crown diameter were smaller than those of Yuanjiang at the classⅠand class Ⅱ, with the increase of DBH, it was larger than Yuanjiang. This indicated that the photothermal conditions had a strong influence on Bombax ceiba at the classⅠand class Ⅱ, while the Bombax ceiba of class Ⅲ was more responsive to water, which reflected the trade-off relations of Bombax ceiba phenotypic structure in different habitats. By studying the phenotypic structure and growth strategy of Bombax ceiba in different habitats and growth stages, it can provide scientific basis for its survival strategy in heterogeneous environment. [ABSTRACT FROM AUTHOR]

Objective To delineate RNA binding profile of NAT10 (N-acetyltransferase 10) in human chronic myelogenous leukemia cell line K562. Methods Enhanced UV crosslinking and immunoprecipitation (eCLIP) were used to capture the transcript collection bound by NAT10 in K562 cells. Data were obtained through high throughput sequencing and then analyzed with bioinformatics. The type and regions of NAT10 binding genes were identified via peak-calling and annotation. The function of the binding RNA was further explored by gene function enrichment analysis. Results NAT10 binding transcripts which were enriched in 3′UTR region, were mainly protein coding genes. Further analysis showed that they were functionally associated with DNA damage and repair. Conclusions NAT10 may regulate gene expression by binding to the 3′UTR region of mRNA associated with DNA damage repair. [ABSTRACT FROM AUTHOR]

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