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Copyright of Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine 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.)

为了优化脂肪酰乙醇胺的制备工艺，以油酸甲酯和乙醇胺为原料，采用无溶剂法制备油酰乙醇胺，采用单因素实验优化了反应条件。然后以10种脂肪酸甲酯为原料，考察了该反应方法的普适性，并对制备得到的10种脂肪酰乙醇胺的结构进行了表征。结果表明：制备油酰乙醇胺的最佳工艺条件为无溶剂、油酸甲酯与乙醇胺物质的量比1∶ 5、反应温度100 ℃、反应时间15 h，在此条件下油酰乙醇胺产率为76.52%；在最佳工艺条件下考察了反应底物的普适性，得到10种脂肪酰乙醇胺目标化合物，其产率在53%~87%之间，并通过核磁氢谱、碳谱以及高分辨质谱确证了目标化合物的结构。该方法反应条件绿色无污染，分离纯化成本低，操作简易，且可以获得克级以上的高纯度脂肪酰乙醇胺，可为以后开展脂肪酰乙醇胺生物活性研究提供足够的样品。 In order to optimize the process of preparation of fatty acid ethanolamine, with methyl oleate and ethanolamine as raw materials, n-oleoyl ethanolamine was prepared by solvent free method, and the reaction conditions were optimized by single factor experiment. Then 10 fatty acid methyl esters were used as raw materials, the universality of the method was investigated, and the structures of 10 fatty acid ethanolamines were characterized. The results showed that the optimal process conditions of preparation of n-oleoyl ethanolamine were obtained as follows:solvent free, molar ratio of methyl oleate to ethanolamine 1∶ 5, reaction temperature 100 ℃ and reaction time 15 h. Under these conditions, the yield of n-oleoyl ethanolamine was 76.52%. Under the optimal conditions, the universality of the substrate was investigated, and the yields of the 10 fatty acid ethanolamines(target compounds) were 53%-87%. The structures of the target compounds were further confirmed by 1H NMR, 13C NMR and high resolution mass spectrometry. The method has the advantages of no pollution, low cost, simple operation, and can obtain high-purity fatty acid ethanolamine above gram level, which can provide sufficient samples for the biological activity research of fatty acid ethanolamine in the future.

Copyright of Machine Tool & Hydraulics is the property of Guangzhou Mechanical Engineering Research Institute (GMERI) 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 Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine 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.)

Food security is a major issue for the country. Promoting the high-quality development of the grain industry is a strategic choice to comprehensively consolidate the foundation of food security, and also an inevitable requirement for building a modern agricultural powerhouse. Stabilizing and improving the self-sufficiency rate of grain in the main sales areas and promoting the high-quality development of the grain industry in the main sales areas are of great practical significance to the overall strategy of national food security. With case analysis, taking the construction of the provincial modern agricultural industrial park for Simiao Rice in Boluo County as an example, this study analyzed the specific practices of three spatial expansion strategies in the development of the Simiao Rice industry in Boluo County by constructing a new theory of spatial expansion for the grain industry, including “products, industrial chains, and business formats”. In-depth thinking and condensation of a model of coordinated development of grain production and economy in the main sales area, based on a good resource foundation, a responsible government, a caring enterprise, and long-term technological support, can enhance the enthusiasm of farmers in the main sales area to grow grains and improve the level of self-sufficiency in grain. The study results show that, there are still areas with good grain production conditions and capacity in the economically developed main sales areas. We should fully explore their resource base for grain production, attach importance to the revitalization of the seed industry, extend the grain industry chain, and promote the integrated development of agriculture, culture, and tourism; strengthen the government’s policy and institutional innovation in promoting land, capital and other factors; strengthen cooperation with scientific research institutes and scientific research teams, focus on scientific and technological innovation, and promote the improvement of grain production quality and efficiency, which could provide references for the high-quality development of the grain industry and policy formulation in the main sales areas. [ABSTRACT FROM AUTHOR]

Copyright of Systems Engineering & Electronics is the property of Journal of Systems Engineering & Electronics 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 Textile Leader is the property of China Textile Information Center 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 Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural 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 Journal of Functional Materials / Gongneng Cailiao is the property of Chongqing Functional Materials 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 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.)

One of the ways to break through the middle-technology trap is to require enterprises or institutions to transform basic scientific research into applied technology, which cannot be separated from the support of application technology systems. It has proven that a perfect application technology system is conducive to enhancing the country's scientific and technological strength. China's technological innovation has a clear application orientation, nevertheless, there are still some shortcomings in the application technology system. The constraints of traditional institutional mechanisms still exist, the contradiction between planned and market economic measures has not been completely resolved; research and application are relatively independent, result in ineffective transformation of scientific and technological achievements; a strong dependence on foreign core technologies, the authority to set standards is held by others; and insufficient regional labor division; the talent institutional mechanisms still need further improvement, etc. Based on these, the study proposes key areas for improvement in the future. [ABSTRACT FROM AUTHOR]

Copyright of South China Fisheries Science is the property of South China Fisheries 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.)

布尔差分和布尔e-导数是组合电路故障检测和布尔函数密码学性质研究的一种有效工具.从线性函数、冗余函数、自反函数、自双反函数、部分自反函数、部分自双反函数的定义出发，讨论了这些特殊布尔函数布尔差分和布尔e-导数的性质，并给出了相应的证明，为方便快捷地实现故障检测和密码学函数的构造奠定理论基础.

Functional peptides refer to peptides that are beneficial to life activities or have special physiological activities, also known as bioactive peptides. Oyster is rich in protein and is a good material for developing bioactive peptides, which has great potential as a functional food and great application value in pharmaceutical and medical industry. With the development of modern biotechnology and medical technology, the method innovation of oyster peptide preparation, the absorptivity and biological activity of oyster peptide have been enhanced significantly, which lead to deep recognition of the biological function of oyster peptide and offer the boarder application prospect. The researches on the diversification activities of oyster peptides were summarized in this review, which provided clues and ideas for the development of the oyster peptide applications. [ABSTRACT FROM AUTHOR]

Copyright of Inorganic Chemicals Industry is the property of Editorial Office of Inorganic Chemicals Industry 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 Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials Engineering 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 Ordnance Equipment Engineering is the property of Chongqing University of Technology 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 South China Fisheries Science is the property of South China Fisheries 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 Inorganic Chemicals Industry is the property of Editorial Office of Inorganic Chemicals Industry 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 Fire Safety Science is the property of Fire Safety Science 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 Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society 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.)

线性函数、冗余特殊、自反函数、自双反函数等特殊逻辑函数在电路设计中具有独特的优点.从特殊逻辑函数的定义出发，提出了基于K图检测含任意项线性函数、冗余函数的方法及基于分解图检测含任意项自反函数、自双反函数的方法，并举例说明了具体检测过程.应用结果表明，该图形方法具有直观，便捷等特点.

Objective To investigate the clinical and CT features of spondylitis caused by non-tuberculous mycobacteria (NTM) and Mycobacterium tuberculosis (TB). Methods The clinical information and CT of 63 gender- and age-matched patients with microbiologically confirmed NTM (21) and TB (42) spondylitis in our hospital from 2009 to 2022 were retrospectively analyzed. Results The majority of NTM spondylitis was middle-aged to elderly women. The incidence of trauma (38.10%), disease severity (47.62%), extraspinal bone involvement (76.19%), skin and soft tissue abscess (61.90%), and CD4 +T cell reduction (38.10%) in NTM group was significantly higher (P=0.001, 0.036, <0.001, <0.001, 0.014) than those in TB group (4.76%, 19.05%, 19.05%, 4.76%, 9.52%). The number of infected vertebrae (5, 2.5-9), incidence of central (90.48%) or peripheral (23.81%) distribution of lesions within the vertebrae, more than 1 lesion in the same vertebrae (80.95%), predominant sclerotic mixed bone destruction (76.19%), nodular or patchy increased density (61.90%), and thick ring sign (38.10%) in NTM group were significantly higher (P=0.003, <0.001, 0.013, <0.001, 0.003, <0.001, <0.001) than that of TB group was (2, 2-4; 11.90%; 2.38%; 1.52%; 35.71%; 0; 0). The incidence of lesions involving only two adjacent vertebrae (52.38%), subligamentous lesions (95.24%), dead bone (64.29%), vertebral collapse (40.48%), spinal deformity (73.81%), intervertebral space stenosis (4.76%), calcification in paravertebral abscess (100%), peripheral muscle abscess (45.24%), the thickness of paravertebral soft tissue swelling/abscess (1.45 cm, 1-1.9 cm), and the number of vertebrae surrounded by paravertebral abscess (3, 2-4) in TB group were significantly higher (P=0.006, 0.006, 0.003, <0.001, 0.015, 0.003, <0.001, <0.001, 0.024, <0.001, <0.001) than that of NTM group (14.29%; 9.52%; 28.57%; 19.05%; 28.57%; 14.29%; 0.5 cm, 0.2-0.95 cm; 1, 1-2). Conclusion The clinical and CT features are helpful for differential diagnosis of NTM and TB spondylitis. [ABSTRACT FROM AUTHOR]

A three-dimensional porous carbon foam absorber was prepared by surfactant foaming method. The relative content of organic matter/C for carbon foam was adjusted by varying the carbonization temperature. The relationship of organic matter/C, light absorption and thermal conductivity was studied to find an optimal equilibrium for comprehensively optimizing the solar steam evaporation performance. Results show that the carbonization temperature has a great effect on the relative content of organic matter/C and pore structure of carbon foam. With reducing relative content of organic matter/C, it demonstrates a significant improvement for light absorption, but also suffers a decrease of thermal insulation performance, which worsens the thermal management ability of solar evaporation system. When carbonized at 600 ℃, the carbon foam absorber can acquire a optimal equilibrium between light absorption and thermal management, which reveals the highest absorption rate (96.5%) and best solar steam evaporation performance (1.0391 kg/ (m²·h)). The vapor evaporation rate is 2.08 times higher than that of pure water. [ABSTRACT FROM AUTHOR]

Copyright of Guangdong Agricultural Sciences is the property of South China Agricultural University, Guangdong 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 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 Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research 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 Brewing is the property of China Brewing 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 Xi'an Jiaotong University (Social Sciences) is the property of Journal of Xi'an Jiaotong University (Social Sciences) 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 Inorganic Chemicals Industry is the property of Editorial Office of Inorganic Chemicals Industry 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 Yellow River is the property of Editorial Board of Yellow River 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 Systems Engineering & Electronics is the property of Journal of Systems Engineering & Electronics 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.)

【目的】探讨细胞松弛素B和解冻程序对玻璃微细管法（GMP）玻璃化冷冻小鼠卵母细胞的影响。【方法】以小鼠MII期卵母细胞为模型，研究冷冻前细胞松弛素B预处理、不同解冻程序对小鼠卵母细胞冷冻效果的影响；随后对经GMP玻璃化冷冻的卵母细胞直接进行培养以检测冷冻是否诱发孤雌发育。【结果】与对照组相比．细胞松弛素B预处理的卵母细胞存活率、受精率、卵裂率及囊胚率没有显著差异（89．3％vs91．3％．44．0％vs40．4％，30．0％vs27．7％，4．0％vs6．4％；P〉0．05）；采用连续浓度梯度递减解冻法的受精率明显高于间断浓度梯度递减解冻法（57．4％vs40．4％；P〈0．05），且前者的卵裂率和囊胚发育率也相对较高f40，2％vs27，7％，14．5％vs6．4％；P〉0．05）。冷冻复苏后卵母细胞的孤雌发育率稍高于未经冷冻的卵母细胞（17．1％vs3．2％；P〉0．05）。【结论】细胞松弛素B预处理对MII期小鼠卵母细胞的GMP玻璃化冷冻保存效果没有影响：采用连续浓度梯度递减解冻法能明显提高复苏后卵母细胞的体外发育能力。

Copyright of Systems Engineering & Electronics is the property of Journal of Systems Engineering & Electronics 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 Journal of Remote Sensing is the property of Editorial Office of Journal of Remote Sensing & Science Publishing Co. 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 Signal Processing is the property of Journal of Signal Processing 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.)