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排序方式: 共有165条查询结果,搜索用时 15 毫秒
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本文实现了一个基于综合匹配法的汉字识别后处理系统,该方法既利用了帝级识别结果的信息,又利用了汉语中字的上下文制约关系,即组字成词的信息,同时用了词的使用频度。 相似文献
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应用Matlab解决常用DEA模型的评价分析 总被引:1,自引:0,他引:1
阐述多种常用的DEA评价模型,利用矩阵形式表述模型结构,应用Matlab对这些模型的评价程序进行编写.使常用的DEA评价问题可以通过Matlab软件解决,有效地解决了DEA循环计算导致的计算量大和复杂的问题.编写的程序分别为传统DEA-CCR模型及其对偶模型、BCC模型、最劣CCR模型和超效率DEA,为以后的DEA评价问题和模型改进提供了便利. 相似文献
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Kok-Min Seow Pin-Shiou Liu Kuo-Hu Chen Chien-Wei Chen Luen-Kui Chen Chi-Hong Ho Jiann-Loung Hwang Peng-Hui Wang Chi-Chang Juan 《International journal of molecular sciences》2022,23(1)
Polycystic ovary syndrome (PCOS), which affects 5–10% of women of reproductive age, is associated with reproductive and metabolic disorders, such as chronic anovulation, infertility, insulin resistance, and type 2 diabetes. However, the mechanism of PCOS is still unknown. Therefore, this study used a letrozole-exposed mouse model in which mice were orally fed letrozole for 20 weeks to investigate the effects of letrozole on the severity of reproductive and metabolic consequences and the expression of cysteine–cysteine motif chemokine receptor 5 (CCR5) in letrozole-induced PCOS mice. The letrozole-treated mice showed a disrupted estrous cycle and were arrested in the diestrus phase. Letrozole treatment also increased plasma testosterone levels, decreased estradiol levels, and caused multicystic follicle formation. Furthermore, histological analysis of the perigonadal white adipose tissue (pgWAT) showed no significant difference in the size and number of adipocytes between the letrozole-treated mice and the control group. Further, the letrozole-treated mice demonstrated glucose intolerance and insulin resistance during oral glucose and insulin tolerance testing. Additionally, the expression of CCR5 and cysteine-cysteine motif ligand 5 (CCL5) were significantly higher in the pgWAT of the letrozole-treated mice compared with the control group. CCR5 and CCL5 were also significantly correlated with the homeostasis model assessment of insulin resistance (HOMA-IR). Finally, the mechanisms of insulin resistance in PCOS may be caused by an increase in serine phosphorylation and a decrease in Akt phosphorylation. 相似文献
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对UOP和IFP再生技术进行分析和比较.从流程、设备、积炭含量、烧焦过程的系统压力、烧焦过程的温度、烧焦过程的循环气量等方面进行了比较.比较结果表明:UOP工艺工艺简单、维护费用低、能耗低,但其高温高水高氯的环境对于催化剂的寿命是不利的.而IFP工艺所采用的干冷循环对于催化剂的寿命的延长是有利的,且设备的材质要求也没有... 相似文献
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Dongshu Du Yeliu Liu Haixin Qian Bo Zhang Xiaojun Tang Ti Zhang Weidong Liu 《International journal of molecular sciences》2014,15(4):6441-6452
Chemokines and their receptors have recently been shown to play major roles in cancer metastasis. Chemokine receptor 6 (CCR6) and its ligand, CCL20, were highly expressed in a variety of human cancers. In our present study, we aimed to clarify whether CCR6/CCL20 was correlated with the migration of hepatocellular carcinoma (HCC). RT-PCR and Western blot results showed that CCR6 was overexpressed in different invasive potential HCC cell lines (p < 0.05), while the expression of CCL20 had no obvious difference (p > 0.05). CCR6 was suppressed by siRNA in HCCLM6, and then the biological behaviors of HCCLM6 cells were observed. The results showed that the CCR6/CCL20 biological axis increased the capacity of proliferation and adhesion, as well as the chemotactic migration and the level of cytokines related to degraded extracellular matrix. In conclusion, these findings indicate that CCR6 indeed participates in regulating the migration and invasion of HCC, and it might become a prognostic factor of HCC. 相似文献
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阐述了做好重整装置首次开工的几个关键因素:做好预处理开工工作,确保重整进料合格;做好重整催化剂的处理工作;把好重整进油后480℃温度关;遵守操作规程,平稳操作。 相似文献
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