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与中英文相比，藏文实体关系训练语料规模较小，传统有监督的学习方法难以获得较高的准确率。针对基于远程监督的实体关系抽取存在错误标记的问题，利用远程监督方法将知识库与文本对齐，构建藏文实体关系抽取的数据集，提出一个基于多级注意力融合机制的藏文实体关系抽取模型。在词级别引入自注意力机制来提取单词的内部特征，在句子级别引入注意力机制为每个实例分配权重，从而充分利用包含信息的句子，减少噪声实例的权重。同时引入联合评分函数，修正远程监督的错误标签，并将神经网络与支持向量机结合，实现藏文实体关系分类。实验结果表明，提出的模型有效提高了藏文实体关系抽取的准确率，且优于基线模型效果。

旨在提升山茶油风味品质，采用气相色谱-离子迁移谱（GC-IMS）技术分析微波、烘烤、蒸制3种预处理技术对压榨山茶油中挥发性成分的影响，并结合正交偏最小二乘判别分析（OPLS-DA）、相对气味活度值（ROAV）和聚类分析比较不同预处理压榨山茶油挥发性成分的差异。结果表明：不同预处理压榨山茶油中共鉴定出40种挥发性成分，其中醛类18种（40.02%~51.88%）、醇类9种（10.99%~19.85%）、酮类6种（19.37%~27.35%）、酯类3种（4.21%~11.44%）、吡嗪类2种（1.25%~6.50%）、烃类1种（0.19%~0.32%）和酸类1种（0.35%~2.16%），其中微波预处理压榨山茶油的挥发性物质含量最高，其次为烘烤、蒸制的；OPLS-DA建立的模型能够有效地区分不同预处理压榨山茶油，并根据变量投影重要性（VIP）值大于1筛选出了10种特征挥发性成分，分别是2-甲基丁醛D、3-甲基丁醛D、2,3-戊二酮、乙酸甲酯、2-甲基吡嗪、丙酮、3-羟基-2-丁酮、顺-2-庚烯醛、正己醇、1-丁醇，其中前5种为关键风味成分（ROAV大于1）；聚类分析表明不同预处理压榨山茶油的10种特征挥发性成分存在差异，分类结果与OPLS-DA分类基本一致。综上，不同预处理技术所得压榨山茶油的风味不同，可通过OPLS-DA和聚类分析进行区分。In order to improve the flavor quality of oil-tea camellia seed oil, gas chromatography-ion mobility spectrometry (GC-IMS) was used to analyze the effect of microwave, baking and steaming pretreatment on the volatile components in pressed oil-tea camellia seed oil, and orthogonal partial least squares-discriminant analysis (OPLS-DA)，relative odor activity value (ROAV) and cluster analysis were used to analyze the difference of volatile components in different pretreated oil-tea camellia seed oil. The results showed that 40 volatile components were identified from the pressed oil-tea camellia seed oil by different pretreatment, including 18 aldehydes (4002%-51.88%), 9 alcohols (10.99%-19.85%), 6 ketones (19.37%-27.35%), 3 esters (4.21%-11.44%), 2 pyrazines (1.25%-6.50%), 1 hydrocarbon (0.19%-0.32%) and 1 acid (0.35%-216%), and the content of volatile compounds in pressed oil-tea camellia seed oil by microwave pretreatment was the highest, followed by baking and steaming. The model established by OPLS-DA could effectively distinguish the pressed oil-tea camellia seed oil with different pretreatment, and 10 characteristic volatile components were screened according to variable importance in projection (VIP) above 1, they were 2-methyl-butanal D, 3-methyl-butanal D, 2, 3-pentanedione, methyl acetate, 2-methylpyrazine, acetone, 3-hydroxy-2-butanone, cis 2-heptenal, n-hexyl alcohol, 1-butanol, and the first 5 of which were the key flavor ingredients (ROAV>1). Cluster analysis showed that there were differences in 10 characteristic volatile components of oil-tea camellia seed oil with different pretreatment, and the classification results were basically consistent with OPLS-DA classification. In conclusion, the flavor of pressed oil-tea camellia seed with different pretreatment is different, and it can be distinguished by OPLS-DA and cluster analysis.

Copyright of Biotechnology Bulletin is the property of Biotechnology Bulletin 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 South China Normal University (Natural Science Edition) / Huanan Shifan Daxue Xuebao (Ziran Kexue Ban) is the property of Journal of South China Normal University (Natural Science Edition) 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 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.)

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.)

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 Journal of Central China Normal University is the property of Huazhong Normal University 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 South China Normal University (Natural Science Edition) / Huanan Shifan Daxue Xuebao (Ziran Kexue Ban) is the property of Journal of South China Normal University (Natural Science Edition) 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.)

As a fat-soluble steroid derivative, vitamin D has the physiological function of maintaining the balance of calcium and phosphorus metabolism of bone. Some studies have shown that vitamin D can promote the process of cell differentiation and apoptosis in the development of diseases of the immune system, endocrine system, cardiovascular system, some tumors and inflammation. Vitamin D mainly regulates the expression of vitamin D receptor, mediates the transcription of target genes, and realizes the biological effect of anti-tumor. In recent years, some studies have found the expression of vitamin D receptor in endometrial cancer tissues, suggesting that it may be related to the progression of endometrial cancer and may be a potential target for the treatment of endometrial cancer. Vitamin D and its analogues have been used in endocrine therapy for cancer as the mechanism of anti-tumor therapy has been further explored. The biological basis of vitamin D receptor, the antitumor effect of vitamin D and its application in endometrial cancer were reviewed. [ABSTRACT FROM AUTHOR]

The aluminum alloy surfaces with circle-shaped micro cavities are fabricated by pulsed Nd : YAG laser. Under the conditions of sliding speed of 0. 15 m/s and 10 N load, a series of frictional experiments with uball- surface" friction pairs are conducted on a HSR-2M high-speed reciprocating friction and wear tester under the starved-oil lubrication condition. The influences of geometrical parameters of micro cavities on the surface of the circular cavity tribological properties are investigated. The influence of laser processing on the micro-hardness of aluminum alloy surface was analyzed and the wear characteristics o£ the test piece and the dual friction pair surface were studied by using the ultra-deep microscopy system. The results show that the micro-hardness of aluminum alloy substrates after laser processing is significantly improved. Under the starved-oil lubrication condition，the average friction coefficient of the micro-textured aluminum alloy surface is significantly reduced compared with the non-textured surface, and the fluctuation is more stable. According to the analysis of wear scar morphology, the surface wear of micro-textured aluminum alloy is reduced. When the diameter of the micro cavity is 60 pm and the areal density is 4. 91%，the surface o£ the micro-textured aluminum alloy has the best anti-friction and anti-wear properties. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Computational Mechanics / Jisuan Lixue Xuebao is the property of Chinese Journal of Computational Mechanics Editorial Office, Dalian 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 Tianjin Medical Journal is the property of Tianjin Medical Journal 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 Nursing of Integrated Traditional Chinese & Western Medicine is the property of Journal of Clinical Nursing in Practice (Editorial Board, Shanghai Jiao Tong University 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.)

目的 对比观察重型颅脑损伤患者改良大骨瓣减压术中渐进减压与常规减压的应用效果. 方法 重型颅脑损伤患者80例, 以随机数字表法分为对照组和观察组各40例.两组均行改良大骨瓣减压术, 对照组患者采用常规减压手术方案; 观察组采用渐进减压手术方案, 即在硬膜下血肿大部分排出后,作颞部近骨窗处切口,行硬膜外引流.分别于术前及术后1、3、5 d采用格拉斯哥昏迷评分(GCS)评价神经功能损伤程度,采用BJM428型颅内压监护仪检测颅内压.记录术后并发症发生情况,包括术后切口疝及脑脊液漏、颅内感染、外伤性癫痫及脑积水.术后3个月采用格拉斯哥预后评分(GOS)分级评价远期预后.结果 两组术后3、5 d GCS均高于术前,且观察组术后3、5 d GCS高于对照组(P均<0.05). 两组术后1、3、5 d颅内压均低于术前,且观察组术后1、3、5 d颅内压低于对照组(P均<0.05). 观察组术后切口疝及脑脊液漏、颅内感染发生率均低于对照组(P均<0.05).观察组良好、中度残疾、植物生存及死亡分级均显著优于对照组(P均<0.05). 结论 重型颅脑损伤改良大骨瓣减压术中采用渐进减压可有效促进患者受损神经功能恢复, 控制颅内压, 降低手术并发症发生率, 改善患者预后, 效果优于常规减压. [ABSTRACT FROM AUTHOR]