The reliable operation of high-speed wire rod finishing mills is crucial in the steel production enterprise.As complex system-level equipment,it is difficult for high-speed wire rod finishing mills to realize fault lo...The reliable operation of high-speed wire rod finishing mills is crucial in the steel production enterprise.As complex system-level equipment,it is difficult for high-speed wire rod finishing mills to realize fault location and real-time monitoring.To solve the above problems,an expert experience and data-driven-based hybrid fault diagnosis method for high-speed wire rod finishing mills is proposed in this paper.First,based on its mechanical structure,time and frequency domain analysis are improved in fault feature extraction.The approach of combining virtual value,peak value with kurtosis value index,is adopted in time domain analysis.Speed adjustment and side frequency analysis are proposed in frequency domain analysis to obtain accurate component characteristic frequency and its corresponding sideband.Then,according to time and frequency domain characteristics,fault location based on expert experience is proposed to get an accurate fault result.Finally,the proposed method is implemented in the equipment intelligent diagnosis system.By taking an equipment fault on site,for example,the effectiveness of the proposed method is illustrated in the system.展开更多
Hepatocellular carcinoma(HCC)is a malignancy known for its unfavorable prognosis.The dysregulation of the tumor microenvironment(TME)can affect the sensitivity to immunotherapy or chemotherapy,leading to treatment fai...Hepatocellular carcinoma(HCC)is a malignancy known for its unfavorable prognosis.The dysregulation of the tumor microenvironment(TME)can affect the sensitivity to immunotherapy or chemotherapy,leading to treatment failure.The elucidation of PHLDA2’s involvement in HCC is imperative,and the clinical value of PHLDA2 is also underestimated.Here,bioinformatics analysis was performed in multiple cohorts to explore the phenotype and mechanism through which PHLDA2 may affect the progression of HCC.Then,the expression and function of PHLDA2 were examined via the qRT-PCR,Western Blot,and MTT assays.Our findings indicate a substantial upregulation of PHLDA2 in HCC,correlated with a poorer prognosis.The methylation levels of PHLDA2 were found to be lower in HCC tissues compared to normal liver tissues.Besides,noteworthy associations were observed between PHLDA2 expression and immune infiltration in HCC.In addition,PHLDA2 upregulation is closely associated with stemness features and immunotherapy or chemotherapy resistance in HCC.In vitro experiments showed that sorafenib or cisplatin significantly up-regulated PHLDA2 mRNA levels,and PHLDA2 knockdown markedly decreased the sensitivity of HCC cells to chemotherapy drugs.Meanwhile,we found that TGF-βinduced the expression of PHLDA2 in vitro.The GSEA and in vitro experiment indicated that PHLDA2 may promote the HCC progression via activating the AKT signaling pathway.Our study revealed the novel role of PHLDA2 as an independent prognostic factor,which plays an essential role in TME remodeling and treatment resistance in HCC.展开更多
目的:探讨髂腹股沟入路、改良Stoppa入路和腹直肌旁入路治疗骨盆髋臼骨折的疗效。方法:回顾性分析2020年8月至2022年8月在本院收治的骨盆髋臼骨折患者资料,依照手术治疗方案不同分为三组,即选择髂腹股沟入路病人为A组,选择改良Stoppa入...目的:探讨髂腹股沟入路、改良Stoppa入路和腹直肌旁入路治疗骨盆髋臼骨折的疗效。方法:回顾性分析2020年8月至2022年8月在本院收治的骨盆髋臼骨折患者资料,依照手术治疗方案不同分为三组,即选择髂腹股沟入路病人为A组,选择改良Stoppa入路病人为B组,选择腹直肌旁入路病人为C组,经倾向性匹配评分法最终得出,A、B组均为50例,C组52例,三组基线资料对比差异无统计学意义(P>0.05)。对比三组一般手术情况、术后住院时间、术后7d骨折复位质量、不同时间点(术前、出院时以及术后6个月末次随访)的髋关节功能(改良Merle D'Aubigne and Postel评分系统)以及术后并发症发生情况。结果:三组显露骨折端时间、术中出血量、术后Hb对比差异有统计学意义(P<0.05),其中B、C组显露时间显著短于A组(P<0.05),术中出血量显著少于A组(P<0.05),术后Hb显著高于A组(P<0.05),B、C组间上述手术指标对比差异无统计学意义(P>0.05);三组术后7d骨折复位质量优良率对比差异无统计学意义(P>0.05),C组的优良率虽高于A、B组,但两两组间对比差异无统计学意义(P>0.05);出院时以及术后6个月末次随访时,三组Postel评分逐渐提高,三组时间点效应对比有统计学意义(P<0.05);三组组间效应以及时间点与组间交互效应对比,差异均无统计学意义(P>0.05),三组出院时及术后6个月末次随访时Postel评分均高于术前(P<0.05);三组术后总并发症率对比差异有统计学意义(P<0.05),其中C组显著低于A组(9.62%vs36.00%,P<0.05)。结论:3种手术入路的钢板内固定术治疗骨盆髋臼骨折均能达到良好骨折复位质量,恢复髋关节功能,但改良Stoppa入路和腹直肌旁入路术中显露时间、出血量及术后Hb效果优于髂腹股沟入路,而腹直肌旁入路的骨折复位优良率高于其他2种入路,且并发症更少。展开更多
基金the National Key Research and Development Program of China under Grant 2021YFB3301300the National Natural Science Foundation of China under Grant 62203213+1 种基金the Natural Science Foundation of Jiangsu Province under Grant BK20220332the Open Project Program of Fujian Provincial Key Laboratory of Intelligent Identification and Control of Complex Dynamic System under Grant 2022A0004.
文摘The reliable operation of high-speed wire rod finishing mills is crucial in the steel production enterprise.As complex system-level equipment,it is difficult for high-speed wire rod finishing mills to realize fault location and real-time monitoring.To solve the above problems,an expert experience and data-driven-based hybrid fault diagnosis method for high-speed wire rod finishing mills is proposed in this paper.First,based on its mechanical structure,time and frequency domain analysis are improved in fault feature extraction.The approach of combining virtual value,peak value with kurtosis value index,is adopted in time domain analysis.Speed adjustment and side frequency analysis are proposed in frequency domain analysis to obtain accurate component characteristic frequency and its corresponding sideband.Then,according to time and frequency domain characteristics,fault location based on expert experience is proposed to get an accurate fault result.Finally,the proposed method is implemented in the equipment intelligent diagnosis system.By taking an equipment fault on site,for example,the effectiveness of the proposed method is illustrated in the system.
基金supported by the National Natural Science Foundation of China(Nos.81872255,62141109)the Leading-Edge Technology Programme of Jiangsu Natural Science Foundation:BK20212021.
文摘Hepatocellular carcinoma(HCC)is a malignancy known for its unfavorable prognosis.The dysregulation of the tumor microenvironment(TME)can affect the sensitivity to immunotherapy or chemotherapy,leading to treatment failure.The elucidation of PHLDA2’s involvement in HCC is imperative,and the clinical value of PHLDA2 is also underestimated.Here,bioinformatics analysis was performed in multiple cohorts to explore the phenotype and mechanism through which PHLDA2 may affect the progression of HCC.Then,the expression and function of PHLDA2 were examined via the qRT-PCR,Western Blot,and MTT assays.Our findings indicate a substantial upregulation of PHLDA2 in HCC,correlated with a poorer prognosis.The methylation levels of PHLDA2 were found to be lower in HCC tissues compared to normal liver tissues.Besides,noteworthy associations were observed between PHLDA2 expression and immune infiltration in HCC.In addition,PHLDA2 upregulation is closely associated with stemness features and immunotherapy or chemotherapy resistance in HCC.In vitro experiments showed that sorafenib or cisplatin significantly up-regulated PHLDA2 mRNA levels,and PHLDA2 knockdown markedly decreased the sensitivity of HCC cells to chemotherapy drugs.Meanwhile,we found that TGF-βinduced the expression of PHLDA2 in vitro.The GSEA and in vitro experiment indicated that PHLDA2 may promote the HCC progression via activating the AKT signaling pathway.Our study revealed the novel role of PHLDA2 as an independent prognostic factor,which plays an essential role in TME remodeling and treatment resistance in HCC.
文摘目的:探讨髂腹股沟入路、改良Stoppa入路和腹直肌旁入路治疗骨盆髋臼骨折的疗效。方法:回顾性分析2020年8月至2022年8月在本院收治的骨盆髋臼骨折患者资料,依照手术治疗方案不同分为三组,即选择髂腹股沟入路病人为A组,选择改良Stoppa入路病人为B组,选择腹直肌旁入路病人为C组,经倾向性匹配评分法最终得出,A、B组均为50例,C组52例,三组基线资料对比差异无统计学意义(P>0.05)。对比三组一般手术情况、术后住院时间、术后7d骨折复位质量、不同时间点(术前、出院时以及术后6个月末次随访)的髋关节功能(改良Merle D'Aubigne and Postel评分系统)以及术后并发症发生情况。结果:三组显露骨折端时间、术中出血量、术后Hb对比差异有统计学意义(P<0.05),其中B、C组显露时间显著短于A组(P<0.05),术中出血量显著少于A组(P<0.05),术后Hb显著高于A组(P<0.05),B、C组间上述手术指标对比差异无统计学意义(P>0.05);三组术后7d骨折复位质量优良率对比差异无统计学意义(P>0.05),C组的优良率虽高于A、B组,但两两组间对比差异无统计学意义(P>0.05);出院时以及术后6个月末次随访时,三组Postel评分逐渐提高,三组时间点效应对比有统计学意义(P<0.05);三组组间效应以及时间点与组间交互效应对比,差异均无统计学意义(P>0.05),三组出院时及术后6个月末次随访时Postel评分均高于术前(P<0.05);三组术后总并发症率对比差异有统计学意义(P<0.05),其中C组显著低于A组(9.62%vs36.00%,P<0.05)。结论:3种手术入路的钢板内固定术治疗骨盆髋臼骨折均能达到良好骨折复位质量,恢复髋关节功能,但改良Stoppa入路和腹直肌旁入路术中显露时间、出血量及术后Hb效果优于髂腹股沟入路,而腹直肌旁入路的骨折复位优良率高于其他2种入路,且并发症更少。
