Search

牛油果是营养价值很高的水果，富含多种维生素以及钠、钾、镁、钙等多种矿物质元素，具有较好的保健作用。牛油果油含有不饱和脂肪酸以及植物甾醇、生育酚、角鲨烯，具有抗氧化、降血脂、降血压、保肝、保护神经等作用，可应用于食品、化妆品和医药行业。国内对牛油果油功效研究较少，国外相关研究较为活跃且深入，但国内外对于牛油果油的功效研究仍不完善。综合国内外有关牛油果油的研究，对其营养成分和功效进行综述，展望了牛油果油未来的研究方向与应用前景，以期为牛油果油传统提取方法的创新、作用机制的深入研究及相关保健品和辅助治疗药物的开发利用提供参考。 Avocado is a fruit with high nutritional value. It is rich in a variety of vitamins, and mineral elements including sodium, potassium, magnesium, calcium, and it has a good health care effect. Avocado oil contains unsaturated fatty acids, phytosterols, tocopherols, and squalene, and it has the functions of antioxidation, lowering blood lipid, lowering blood pressure, protecting liver and neuroprotection. The avocado oil can be used in food, cosmetics and pharmaceutical industries. The research on the efficacy of avocado oil abroad is active and in-depth, while the domestic research is few, and the research on the efficacy of avocado oil at home and abroad is still imperfect. The relevant research on avocado oil at home and abroad was summarized from nutritional components and efficacy, and the future research direction and application prospect of avocado oil were prospected, so as to provide references for the innovation of avocado oil traditional extraction methods, the in-depth research on action mechanism, and the development and utilization of related health products and adjuvant therapeutic drugs.

中国现代狩猎起步较晚,2006年,中国狩猎限额的拍卖被中断,同时2011年,外国人到中国申请狩猎,又被中止,狩猎活动接连2次被禁止,引起了社会的广泛关注。通过对世界狩猎现状的叙述,包括各国猎人的数量、消费金额、相关法律法规以及狩猎管理等信息,并进行各国之间的对比,找出我国在狩猎管理中的不足,增加对世界狩猎现状的了解,从而发现狩猎发展中所存在的问题,为中国的狩猎发展提供参考。

层状撕裂是钢结构厚板中的一种脆性断裂形式,通常发生在十字形接头、T形接头和角接接头中。本文结合正在进行的《钢结构设计规范》（GB 50017-2003）的修订工作,对钢结构厚板的层状撕裂问题进行专门的研究综述。从钢材材质、接头应力状态及焊接工艺等三方面分析了层状撕裂的产生机理及其影响因素;并从钢材选材、结构接头设计、加工及焊接工艺措施等方面提出了防止钢结构厚板层状撕裂的技术措施。最后,简要介绍了国内外关于钢结构厚板层状撕裂的相关研究进展。本文对厚板钢材的选材及防止钢结构厚板的层状撕裂具有一定的指导意义。

随着我国保护区事业的飞速发展,我国自然保护区的数量建设已提前超额完成了预定的规划任务,但是在管理上还远远落后于客观的要求,急需迅速转入质量建设阶段,以适应时代发展的步伐。该文介绍了自然保护区含义在近几十年来的发展和深化,分析了保护区的共性、独特性和差异性,明确了保护区监控的含义和多样化,阐明了保护区建设进入质量发展阶段的主要任务,指出了实施保护区生物区域规划管理方向的主要途径。明确了保护区只有注重质量建设,才能发挥自然保护区应用的活力,才能促进区域生态建设和区域经济向前发展。

保护区建立的目的在于保护生物多样性,进而维护区域生态安全和本地人民的根本利益,应该说,与本地社区发展的目标和利益并不存在根本的矛盾。但是,矛盾的发生主要在于彼此沟通不够,工作欠细致。本文主要探讨保护区应该如何与本地社区建立密切的伙伴关系,共同完成预期的目标,使之成为实施可持续发展战略与建设和谐社会的基本单元,为生物多样性和文化多样性的保护和持续利用做出应有的贡献。主要注意下列几点:1)保护区应争取地方政府的领导和支持,建立一个领导小组,邀请有关部门和本地社区的代表共同组成;2)遵循可持续发展战略的要求制定区域生态发展规划和行动计划,发挥本地资源优势,把经济建设和环境保护同步发展;3)制定清晰可行的工作条例,让参与者有共同遵守的准则,保持旺盛的战斗力,团结一致,克服各种困难;4)加强与国内外有关部门的合作,广泛与社会各界人士取得密切联系,争取把投资、捐赠、业务合作、观光旅游、休闲度假等工作做好。

哈纳斯湖保护区面临着既要开展旅游,又要加强保护的繁重任务,迫切需要找到彼此协调的办法。本文讨论了关于该保护区有效管理的问题,提出了按生物圈保护区管理模式的要求行事、加强生态旅游建设、重视监测系统建立、建立基金筹措和收支管理机制以及制定生态旅游指南等具体意见,供有关方面参考。

公众参与保护区的建设和管理是保护区事业的一项重要任务。本文拟就为什么要公众参与、谁应该参与、有哪些参与形式、如何争取参与、有哪些经验值得介绍和共管机制的形成等方面作简要论述,以供有关方面参考。我们认为仅仅依靠保护区管理人员自己远远不能满足保护区事业的要求,本地社区以及有关业务部门、地方政府、非政府组织、公私企业、科教部门、环保人士、旅游者等一系列利益攸关者应该参与,通过提供信息、共同决策、委托或承包全部或部分独立的工作等形式参与,利用各种有效形式如新闻媒体等积极争取参与。并建议保护区与地方政府合并为一体或成立管委会等有效方式形成共管机制。本文以广东车八岭保护区和巴基斯坦卡拉戈拉姆（Cebtral karakoram）国家公园为例阐明了这个问题。

道路、水库、建筑物、不断扩大的农田和土地退化正在使自然景观的完整性受到严重破坏。所保存的未经干扰或少受干扰的天然生态系统的面积日益缩小,犹如海洋中的孤岛。生物多样性受到严重的威胁。在自然保护区中,物种迁移和基因流动的可能性也在不断地降低。生物区域规划被认为是一种较好的选择,它力求把保护区和栽培地区视为一个有机整体,遵循保护和发展密切结合的方针,制定行动计划并予以实施。本文根据保护区的管理情况、工作条件和科研状况等,对保护区或区域的类型进行了划分,针对现实,提出了如何实施生物区域规划。

蛇岛老铁山保护区由蛇岛和辽东半岛最南端的老铁山地区组成,面积145.95 km2。前者为渤海上一个岛屿,面积0.73km2,目前约有20000条黑眉蝮蛇;后者为东北亚大陆候鸟迁徙的主要通道之一,每年有200多种上百万只鸟在此通过和停留。保护区于1980年建立至今已有26a,创造了许多有效管理的经验。建议加强封山育林,促进原生性森林生态系统的恢复;重视生态农业示范园的建设;加强鸟类资源的保护和持续利用;发展生态旅游;加强岛屿生态系统研究。

[Objective] The aims of this study are to explore the evolution characteristics of runoff and sediment flux at the Toudaoguai hydrology station of the Yellow River, and to provide theoretical basis for rational planning of regional water resources. [Methods] Based on the runoff and sediment flux data from 1958 to 2022, non-parametric testing methods and the CEEMDAN method were adopted to study the trends, abrupt changes, and periodic variations in runoff and sediment flux at the Toudaoguai hydrological station. Furthermore, an Informer prediction model was constructed by using monthly runoff and sediment flux data. [Results] (1) The M-K statistics for annual runoff and annual sediment flux are-3.380 and-5.067, respectively. The annual runoff and sediment flux experienced abrupt changes in 1986, 1968 and 1986, with decline rates of 36%, 44.38% and 61.32%, respectively. (2) After decomposing the annual runoff and sediment flux sequences using the CEEMDAN method, three IMF components and one RES component were obtained for both sequences. The average periods of the three IMF components in the runoff and sediment flux sequences were 3.69 years, 7.67 years, 30 years and 3.41 years, 7.5 years, 26 years, respectively. The decomposition of the monthly runoff and sediment flux yielded 7 IMF components, with short periods of 3.46 months and 3.61 months, long periods of 226.33 months and 184.50 months, and dominant periods of 7.25 months and 8.09 months. (3) After constructing the model, it was found that the prediction accuracy for runoff was higher than that for sediment flux. This is because that sediment flux is influenced by numerous factors and exhibits a more extensive range of variation, making it more challenging to predict than runoff. [Conclusion] There is a significant downward trend in runoff and sediment flux at the Yellow River Toudaoguai hydrological station, which is mainly attributed to the influence of precipitation, and the abrupt change points in the sequences closely related to the construction of upstream reservoirs. [ABSTRACT FROM AUTHOR]

Objective To explore the influence of social networks on health-related behaviors in stroke patients. Methods From July to September 2023, participants living in Guangdong were selected as the survey respondents using convenient sampling method. The general information questionnaire, stroke health-related behavior questionnaire and social network questionnaire were used to collect data. Social network analysis was used to explore network characteristics and draw social network diagrams. Latent class analysis was used to explore health-related behavior patterns of stroke. Kruskal-Wallis H test and Bonferroni test were used to compare the differences in social networks of different health-related behavior patterns. Results Stroke health-related behaviors can be divided into three categories, namely "good health behavior group" (C1, 58.15%), "smoking and drinking group" (C2, 24.60%), and "sedentary lifestyle and imbalanced diet and sleep group" (C3, 17.25%). The network effective size, efficiency, and betweenness centrality of the "smoking and drinking group" and the "sedentary lifestyle and imbalanced diet and sleep group" were lower than that of the "good health behavior group" (P<0.05/3). In contrast, the density, network hierarchy, network constraint, percentage of individuals who smoked and drank, and percentage of individuals who did not exercise and ate healthily of the two groups were higher than that of the "good health behavior group" (P<0.05/3). Conclusion Social network characteristics with high betweenness centrality, low hierarchy, low constraint and high network efficiency can promote health-related behaviors of stroke. Building a social network with equality, low constraint and positive healthy interaction is helpful for community stroke prevention and treatment. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Oil Crop Sciences is the property of Oil Crops Research Institute of Chinese Academy of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Rural Water & Hydropower is the property of China Rural Water & Hydropower Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Industrial Water Treatment is the property of CNOOC Tianjin Chemical Research & Design Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Research of Soil & Water Conservation is the property of Institute of Soil & Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Modern Preventive Medicine is the property of Modern Preventive Medicine Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Curriculum Studies / Kecheng Yanjiu is the property of Angle Publishing Co., Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Chinese Mass Spectrometry Society is the property of Journal of Chinese Mass Spectrometry Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Bulletin of Soil & Water Conservation is the property of Bulletin of Soil & Water Conservation Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Mechanical Strength / Jixie Qiangdu is the property of Zhengzhou Research Institute of Mechanical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Lubrication Engineering (0254-0150) is the property of Editorial Office of LUBRICATION ENGINEERING and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A case of apocrine cystadenoma is reported ・ A 42-year-old female presented w让h dark blue tumor below the right lower eyelid for 2 years・ Dermatological examination showed a 0. 4 cm x0・ 3 cm demarcated dark blue soft spherical tumor below the right lower eyelid, without tenderness・ Histopathology showed a unilocular cyst in the reticular dermis and fatty layer, with double layer of cuboidal-columnar epithelium and an outer layer of myoepithelial cells・ Papillary projections and thickened cyst wall were evident. The diagnosis was apocrine cystadenoma・ Following surgical resection of the tumor, no recurrence was observed during follow-up. [ABSTRACT FROM AUTHOR]

Copyright of Food Research & Development is the property of Food Research & Development Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Rural Water & Hydropower is the property of China Rural Water & Hydropower Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Based on the development status of the domestic and foreign data trading market and platform thinking perspective, the economic overview and prospect of data trading in China were analyzed. Combined with the platform economy and the characteristics of data trading platform market development, the transaction mode, platform types, data source method, and characteristics of data trading platform were discussed in depth respectively. In addition, a analysis of typical domestic government-led data trading platforms was conducted. The study of data trading platform models and characteristics presented reference starting points for the government in the policy formulation of data trading platform cultivation and development. Also, it put forward positive suggestions for cultivating the data trading platform market. [ABSTRACT FROM AUTHOR]

Copyright of Cancer Research on Prevention & Treatment is the property of Cancer Research on Prevention & Treatment Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Multipurpose Utilization of Mineral Resources / Kuangchan Zonghe Liyong is the property of Multipurpose Utilization of Mineral Resources Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Multipurpose Utilization of Mineral Resources / Kuangchan Zonghe Liyong is the property of Multipurpose Utilization of Mineral Resources Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Tropical Geography is the property of Tropical Geography Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Food & Machinery is the property of Food & Machinery Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Contemporary Pediatrics is the property of Xiangya Medical Periodical Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agricultural Big Data is the property of Journal of Agricultural Big Data Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of CT Theory & Applications is the property of Editorial Department of CT Theory & Applications and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Mine Automation is the property of Industry & Mine Automation Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)