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| 1 | Modelling solid-convective flash pyrolysis of straw and wood in the pyrolysis centrifuge reactor 显示文摘 | Niels Bech Morten Boberg Larsen Peter Arendt Jensen | 2009 | Biomass and Bioenergy2009，33，： | 1 |
| 2 | Modelling solid-convective flash pyrolysis of straw and wood in the pyrolysis centrifuge reactor 显示文摘 | Niels Bech Morten Boberg Larsen Peter Arendt Jensen | 2009 | Biomass and Bioenergy2009，33，： | 1 |
| 3 | Pain epidemiology and health related quality of life in chronic non-malignant pain patients referred to a Danish multidisciplinary pain center显示文摘 | Niels Becker Annemarie Bondegaard Thomsen Alf Kornelius Olsen Per Sj?gren Per Bech J?rgen Eriksen | 1997 | Pain1997，，3： | 1 |
| 4 | 应用两相流动实验测定白垩岩心栓的含油/水饱和度函数显示文摘本文提出了一种测定低渗透性岩样的含油/水饱和度、也就是毛细压力和相对渗透率的新方法,该方法在注水实验中利用了显著的末端效应。在毛细压力高的岩样中,由于受这种末端效应的影响;测定了饱和度函数值出现较宽的间隔。根据复杂的岩心注水图表中列出的流体分布及生产数据,利用最小二乘法就可以计算出排泄和渗吸时的饱和度函数。应用化学漂移NMR技术测定流体分布,利用不同的数据组计算饱和度函数,这样就可以避免不符合要求的相互关联。当毛细压力和相对渗透率中存在滞后现象时,Killongh方法可以解释其扫描影响。该方法在北海白垩岩样实验中已经得到证实,其实验时间介于离心机法和多孔板法之间。 | Niels Bech 夏竹君 等 | 2001 | 国外测井技术2001，16，2： | 0 |
| 5 | Femoroacetabular offset restoration in total hip arthroplasty;Digital templating a short stem vs a conventional stem显示文摘BACKGROUND Failure in restoring individual anatomy could be a reason for persistent functional limitations post total hip arthroplasty.Femoroacetabular offset(FAO)plays an important role in anatomic restoration,as loss of offset≥5 mm is associated with altered gait and decreased functional outcome.Preoperative assessment by use of digital templating has shown to be a reliable method for sizing the components in total hip arthroplasty,and can show if anatomic restoration is achieved.In recent years,short stems are growing in popularity as it could allow better restoration due to more variety in placement.AIM To assess whether restoration of the FAO differs between a short or a conventional stem by use of digital templating.Additionally,association of the preoperative offset and caput-colllum-diaphyseal angle(CCD-angle)within restoration of both stems was investigated,and the reliability of measurements was assessed.METHODS A total of 100 standardized hip radiographs were used for digital templating.Restoration of FAO was classified into“restored”or“not restored”,when a<5 mm or≥5 mm difference from baseline value presented,respectively.Differences between the two stems concerning proportions of correct restoration of the FAO were analyzed by use of McNemar tests.To assess association between CCDangle and preoperative FAO with absolute FAO restoration,multi-level analysis was performed by use of a linear mixed model to account for paired measurements.Through determination of the optimal point under the curve in operating curve-analysis,bootstrapping of thousand sets was performed to determine the optimal cutoff point of the preoperative FAO for restoration within the limits of 5 mm.Three observers participated for inter-observer reliability,with two observers measuring the radiographs twice for intra-observer reliability.RESULTS The mean preoperative FAO was 79.7 mm(range 62.5-113 mm),with a mean CCD-angle of 128.6°(range 114.5°-145°).The conventional stem could only restore the FAO in 72 of the cases,whereas the short stem restored the FAO in all cases.CCD-angle was not a predictor,but the preoperative FAO was.A cut-off point of 81.25 mm(95%confidence interval of 80.75-84.75 mm)in preoperative FAO was found where the conventional stem was unable to restore the FAO.Reliability of measurements was excellent,with an intra-observer reliability of 0.99 and inter-observer reliability in baseline measurements higher than 0.9 between the three observers.CONCLUSION In preoperative planning of FAO restoration in total hip arthroplasty,digital templating shows that short stems with a curve following the medial calcar are potentially better at restoring the FAO compared to conventional stems if the preoperative offset is≥80.0 mm. | Sheryl de Waard Tom Verboom Niels Hendrik Bech Inger N Sierevelt Gino M Kerkhoffs Daniël Haverkamp | 2022 | World Journal of Orthopedics2022，13，2： | 0 |
| 6 | Integrity of the hip capsule measured with magnetic resonance imaging after capsular repair or unrepaired capsulotomy in hip arthroscopy显示文摘BACKGROUND Current literature shows no clear answer on the question how to manage the capsule after hip arthroscopy.Regarding patient reported outcome measures there seems to be no difference between capsular repair or unrepaired capsulotomy.AIM To evaluate and compare the integrity of the hip capsule measured on a magnetic resonance imaging(MRI)scan after capsular repair or unrepaired capsulotomy.METHODS A case series study was performed;a random sample of patients included in a trial comparing capsular repair vs unrepaired capsulotomy had a postoperative MRI scan.The presence of a capsular defect and gap size were independently evaluated on MRI.RESULTS A total of 28 patients(29 hips)were included.Patient demographics were comparable between treatment groups.There were 2 capsular defects in the capsular repair group and 7 capsular defects in the unrepaired capsulotomy group(P=0.13).In the group of patients with a defect,median gap sizes at the acetabular side were 5.9 mm(range:2.7-9.0)in the repaired and 8.0 mm(range:4.5-18.0)in the unrepaired group(P=0.462).At the muscular side gap sizes were 6.6 mm(range:4.1-9.0)in the repaired group and 11.5 mm(range:3.0-18.0)in the unrepaired group(P=0.857).The calculated Odds ratio(OR)for having a capsular defect with an increasing lateral center-edge(CE)angle was 1.12(P=0.06).The OR for having a capsular defect is lower in the group of patients that underwent a labral repair with an OR of 0.1(P=0.05).CONCLUSION There is no significant difference in capsular defects between capsular repair or unrepaired capsulotomy.Regarding clinical characteristics our case series shows that a larger CE angle increases the likelihood of a capsular defect and the presence of a labral repair decreases the likelihood of a capsular defect. | Niels H Bech Lode A van Dijk Sheryl de Waard Gwendolyn Vuurberg Inger N Sierevelt Gino MMJ Kerkhoffs Daniël Haverkamp | 2022 | World Journal of Orthopedics2022，13，4： | 0 |
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