As a commonly used non-contact flatness detection method, laser triangular detection method is designed with low cost, but it cannot avoid measurement errors caused by strip steel vibration effectively. This paper puts forward a dynamic flatness image processing method based on improved laser triangular detection method. According to the practical application of strip steel straightening, it completes the image pre-processing, image feature curve extraction and calculation of flatness elongation using digital image processing technology. Finally it eliminates elongation measurement errors caused by the vibration.

As a commonly used non-contact flatness detection method, laser triangular detection method is designed with low cost, but it cannot avoid measurement errors caused by strip steel vibration effectively. This paper puts forward a dynamic flatness image processing method based on improved laser triangular detection method. According to the practical application of strip steel straightening, it completes the image pre-processing, image feature curve extraction and calculation of flatness elongation using digital image processing technology. Finally it eliminates elongation measurement errors caused by the vibration.

Private cloud is an internal cloud featuring multi-tenant,dynamic configuration and optimization infrastructure,which enables developers to achieve service self-deployment and self-hosting within security coverage of the enterprise data center.This paper introduced the concept of cloud computing.Then it went on to present the private cloud architecture of the hospital by analysis of problems in the hospital including information construction costs,management and maintenance,and information expansion.In the end,the authors analyzed the cloud computing service model,hospital private cloud architecture,along with outcome analysis for hospital private cloud implementations.

As a commonly used non-contact flatness detection method, laser triangular detection method is designed with low cost, but it cannot avoid measurement errors caused by strip steel vibration effectively. This paper puts forward a dynamic flatness image processing method based on improved laser triangular detection method. According to the practical application of strip steel straightening, it completes the image pre-processing, image feature curve extraction and calculation of flatness elongation using digital image processing technology. Finally it eliminates elongation measurement errors caused by the vibration.

Confirmation of basic technological parameters of tension levellers is the most important factor of leveling strip. Up to now, most factories have used experts' experience to decide these parameters, without any established rule to follow. For better quality of strip, a valid method is needed to decide technological parameters precisely and reasonably. In this paper, a method is used based on neural network and genetic algorithm. Neural network has a good ability to extract rules from work process of tension levellers. Then using neural network, which has learned from a lot of working samples, to be the evaluation of fitness, genetic algorithm could easily find the best or better technological parameters. At the end of this paper, examinations are given to show the effect of this method.

Objective To investigate the imaging features and the relationship with pathological characteristics of chromophobe cell renal carcinoma (CCRC).Methods The clinicopatholocal manifestations and CT or MRI imaging findings were analyzed retro-spectively in 23 patients with surgically confirmed CCRC.The location,shape,size,density,border,blood supply and invasion of adjacent organs of CRCC,especially the dynamic enhanced mode,were mainly analyzed and compared with pathology.Results The 23 cases of CCRC showed unilateral single mass on CT and MRI scans,and 12 located in right kidney while 1 1 in left kidney.The size ranged from 27-330 mm in diameter,and round or oval-shaped soft tissue mass was observed.The boundaries of 1 6 cases were clear,and 3 cases of mass broke through renal capsule,3 invaded renal pelvis,perirenal fat,renal vein and inferior vena cava,2 ca-ses with retroperitoneal lymph node metastases.18 cases were scanned by CT and the mass presented as soft tissue density on plain CT (CT value 30-44 HU).6 cases were scanned by MRI with abnormalities presenting with iso or hypo-intense on the T1 WI,hy-per or hypo-intense on the T2 WI,and 2 cases of pseudocapsule were showed as circled hypointense on T2 WI.According to the dy-namic enhancement,23 cases of CCRC were divided into three type:(1 )Mild-to-moderate enhanced type(n= 14):including mild homogeneous strengthening (n=7)and mild heterogeneous strengthening (n=7);(2)Significantly enhanced type(n=7):including heterogeneous enhancement(n=6)and uniform enhancement(n=1);(3)Spokes shape or scar enhancement(n=2).The sample of CCRC was mainly solid and showed yellowish-brown or brown section.According to the situation of HE staining,the characteristic microscopic features were divided into three types:the typical,acidophil type and mixed type.Conclusion Combined imaging find-ings of CT dynamic enhanced mode can provide characteristic information for diagnosis of CCRC,and comprehensive analysis of the imaging findings will contribute to the diagnosis and differential diagnosis.

Objective To investigate the reliability of using the pubic symphysis diastasis of 25 mm and anterior separation distance of sacroiliac joint to differentiate anteroposterior compression (APC) type Ⅰ and Ⅱ injuries as well as assess the injury severity.Methods A total of 11 (seven males and four females) fresh cadaver specimens with 22 hemipelvis were collected.The pelvic APC injury test models including fixed hemipelvis (restricted group) and unfixed hemipelvis (non-restricted group) were established,with 11 hemipelvis in each group according to the random number table method.Meanwhile the specimens were divided into male group (14 hemipelvis) and female group (eight hemipelvis),simulating APC type injury external rotation hemipelvis.The public symophysis interval and anterior interval of sacroiliac joint of the original pelvis,the pubic symphysis diastasis and anterior diastasis of sacroiliac joint after anterior tibiofibular ligament failure,as well as the affected pelvis ligament and sacral ligament injury were recorded and compared between the restricted and non-restricted groups,male and female groups.Results There were no significant differences in the public symphysis interval of the original pelvis and anterior interval of sacroiliac joint between the restricted group and the non-restricted group (P ＞ 0.05).The pubic symphysis interval of the original pelvis was [(5.13 ± 0.61) mm] in male group and (4.03 ± 0.84)mm] in female group (P ＜ 0.05).When the anterior tibiofibular ligament ruptured,the pubic symphysis diastasis distance was (23.36 ± 7.27) mm,ranging from 12 to 41 mm,and the diastasis distance of anterior sacroiliac joint was (9.82 ± 3.25)mm,ranging from 5 to 18 mm.In terms of the public symphysis interval,there were no significant differences between male and female groups,restricted and the non-restricted groups (P ＞ 0.05).In terms of anterior interval of sacroiliac joint,there was significant difference between male and female groups (P ＜ 0.05) but no significant difference between the restricted and non-restricted groups (P ＞ 0.05).In the restricted group,sacrotuberous ligament injuries were found in four patients,and sacrospinous ligament injuries in five,whhile there were no obvious sacrospinous ligament and sacrotuberous ligament injuries in non-restricted group.There were 10 specimens with the pubic symphysis diastasis ≥23.36 mm and 10 specimens with the diastasis distance of anterior sacroiliac joint ≥9.82 mm (46％),and there were 15 specimens with at least the pubic symphysis interval ≥ 23.36 mm or the anterior interval of sacroiliac joint ≥ 9.82 mm (68％).Conclusions The public symphysis interval ≥ 23.36 mm or anterior interval of sacroiliac joint ≥ 9.82 mm can distinguish anteroposterior compression Ⅰ from Ⅱ injuries,and the combination of the two criteria can be beneficial to assessment of pelvic injury severity.

Objective To establish a three-dimensional finite element model of pelvic anteroposterior compression (APC) for analysis of mechanisms for related liganentous damages.Methods A finite element model and a laboratory mechanical model of APC were established using the same pelvic specimens.In a finite element model of normal pelvic bones and ligaments,after the right pelvis was fixated the pubic symphysis (PS) was sectioned.Next,a manual external mobile force was gradually applied to the left hemipelvis to make the PS diastasis 10,20,30,40,60,80 and 100 mm apart.The mechanical experiment revealed the anterior sacroiliac ligament (ASIL) was ruptured when the PS diastasis reached 28 mm.After the strain value of ASIL was calculated through the finite element model,it was applied to the other pelvic ligaments.The displacement in front of the sacroiliac joint (SIJ),stress,strain and extent of injury and disruption of sacrotuberous/sacrospinous ligaments (STL/SSL) with a corresponding PS diastasis were observed and recorded.Results ASIL failed at the point when the PS diastasis was 28 mm and the displacement in front of SIJ was 7.41 ± 1.14 mm.The strain and maximum principal stress of ASIL calculated in the finite element model were 259.5％ and 543.24 MPa respectively.The maximum principal stress value of SSL was 35.00 MPa at the point of failure when the PS diastasis and the displacement in front of SIJ were 51 mm and 15.23 ±2.88 mm,respectively.When the PS diastasis and the displacement in front of SIJ were 100 mm and 7.5 mm respectively,the maximum principal stress value of STL was 16.17 MPa but the strained ligament was not ruptured.When the pelvis was rotated externally step by step,the ASIL failure was followed by the rupture of SSL but not necessarily by the STL failure.Conclusion As the finite element pelvic bone-ligament model established in this study can effectively simulate the mechanisms for APC injury,it can be used to evaluate different extents of pelvic ligamentous injury,providing a basis for the biomechanical study of pelvic bones and ligaments.

Objective To observe the therapeutic effects of urolithin A(UA)on respiratory syncytial virus(RSV)-induced lung infection in neonatal mice and explore the underlying mechanisms.Methods Babl/c mice(5-7 days old)were subjected to nasal instillation of RSV and received intraperitoneal injection of saline or 2.5,5 and 10 mg/kg UA 2 h after the infection and then once daily for 2 weeks.Bronchoalveolar lavage fluid(BALF)was then collected for detection of inflammatory cells and mediators,and lung pathology was evaluated with HE staining.RSV-infected BEAS-2B cells were treated with 2.5,5 or 10 μmol/L UA.Inflammatory factors,cell viability,apoptosis and autophagy were analyzed using ELISA,CCK-8 assay,TUNEL staining,flow cytometry,Western blotting and immunofluorescence staining.The cellular expressions of miR-136 and Sirt1 mRNAs were detected using qRT-PCR.A dual-luciferase reporter system was used to verify the binding between miR-136 and Sirt1.Results In neonatal Babl/c mice,RSV infection caused obvious lung pathologies,promoted pulmonary cell apoptosis and LC3-Ⅱ/Ⅰ,Beclin-1 and miR-136 expressions,and increased the total cell number,inflammatory cells and factors in the BALF and decreased p62 and Sirt1 expressions.All these changes were alleviated dose-dependently by UA.In BEAS-2B cells,RSV infection significantly increased cell apoptosis,LC3B-positive cells and miR-136 expression and reduced Sirt1 expression(P<0.01),which were dose-dependently attenuated by UA.Dual-luciferase reporter assay confirmed the binding between miR-136 and Sirt1.In RSV-infected BEAS-2B cells with UA treatment,overexpression of miR-136 and Ex527 treatment both significantly increased the inflammatory factors and cell apoptosis but decreased LC3B expression,and these changes were further enhanced by their combined treatment.Conclusion UA ameliorates RSV-induced lung infection in neonatal mice by activating miR-136-mediated Sirt1 signaling pathway.

Objective To observe the therapeutic effects of urolithin A(UA)on respiratory syncytial virus(RSV)-induced lung infection in neonatal mice and explore the underlying mechanisms.Methods Babl/c mice(5-7 days old)were subjected to nasal instillation of RSV and received intraperitoneal injection of saline or 2.5,5 and 10 mg/kg UA 2 h after the infection and then once daily for 2 weeks.Bronchoalveolar lavage fluid(BALF)was then collected for detection of inflammatory cells and mediators,and lung pathology was evaluated with HE staining.RSV-infected BEAS-2B cells were treated with 2.5,5 or 10 μmol/L UA.Inflammatory factors,cell viability,apoptosis and autophagy were analyzed using ELISA,CCK-8 assay,TUNEL staining,flow cytometry,Western blotting and immunofluorescence staining.The cellular expressions of miR-136 and Sirt1 mRNAs were detected using qRT-PCR.A dual-luciferase reporter system was used to verify the binding between miR-136 and Sirt1.Results In neonatal Babl/c mice,RSV infection caused obvious lung pathologies,promoted pulmonary cell apoptosis and LC3-Ⅱ/Ⅰ,Beclin-1 and miR-136 expressions,and increased the total cell number,inflammatory cells and factors in the BALF and decreased p62 and Sirt1 expressions.All these changes were alleviated dose-dependently by UA.In BEAS-2B cells,RSV infection significantly increased cell apoptosis,LC3B-positive cells and miR-136 expression and reduced Sirt1 expression(P<0.01),which were dose-dependently attenuated by UA.Dual-luciferase reporter assay confirmed the binding between miR-136 and Sirt1.In RSV-infected BEAS-2B cells with UA treatment,overexpression of miR-136 and Ex527 treatment both significantly increased the inflammatory factors and cell apoptosis but decreased LC3B expression,and these changes were further enhanced by their combined treatment.Conclusion UA ameliorates RSV-induced lung infection in neonatal mice by activating miR-136-mediated Sirt1 signaling pathway.