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| 1 | 利用图像和机器学习检测大豆作物幼苗期玉米杂苗显示文摘在大豆-玉米轮作生产过程中,玉米杂苗会与大豆苗竞争水和肥料,而且很容易遮住大豆苗,影响害虫(如玉米根虫)的防控,降低大豆品质。因此,在大豆幼苗期及时检测出玉米杂苗并对其进行处理非常重要。传统的人工检测方法主观性强、效率低,传感器和算法的发展为自动检测玉米杂苗提供了更好的解决方案。本研究在温室环境下模仿田间条件,待玉米和大豆发芽后,连续5天用因特尔RealSense D435相机采集彩色图像,并人工裁剪幼苗图像区域,在此基础上对图像进行分割和去噪。在采集图像形状、色彩和纹理特征值后,对所采集的特征值进行权重分析,保留前10种重要的特征值导入基于特征的机器学习算法中进行模型训练和预测。预测结果表明,支持向量机模型(SVM)、神经网络(NN)和随机森林(RF)的预测精度分别为85.3%,81.5%和82.6%。将数据集导入GoogLeNet和VGG-16两种深度学习模型进行训练,预测精度分别为96.0%和96.2%。VGG-16模型在区分大豆幼苗和玉米杂苗中有较好的表现,彩色图像和VGG-16模型组成的系统可以自动检测大豆生长过程中玉米杂苗的情况,为农民提供准确的信息,帮助其进行生产决策和田间管理。 | Paulo FLORES 张昭 Jithin MATHEW Nusrat JAHAN John STENGER | 2020 | 智慧农业(中英文)2020，2，3： | 6 |
| 2 | Single-operator cholangioscopy for biliary complications in liver transplant recipients显示文摘AIM To evaluate cholangioscopy in addition to endoscopic retrograde cholangiopancreatography(ERCP) for management of biliary complications after liver transplantation(LT).METHODS Twenty-six LT recipients with duct-to-duct biliary reconstruction who underwent ERCP for suspected biliary complications between April and December2016 at the university hospital of Muenster were consecutively enrolled in this observational study. After evaluating bile ducts using fluoroscopy, cholangioscopy using a modern digital single-operator cholangioscopy s y s t e m(S py G la s s D S ?) wa s pe r fo r me d dur ing the same procedure with patients under conscious sedation. All patients received peri-interventional antibiotic prophylaxis and bile was collected during the intervention for microbial analysis and for antibiotic susceptibility testing.RESULTS Thirty-three biliary complications were found in a total of 22 patients, whereas four patients showed normal bile ducts. Anastomotic strictures were evident in 14(53.8%) patients, non-anastomotic strictures in seven(26.9%), biliary cast in three(11.5%), and stones in six(23.1%). A benefit of cholangioscopy was seen in 12(46.2%) patients. In four of them, cholangioscopy was crucial for selective guidewire placement prior to planned intervention. In six patients, biliary cast and/or stones failed to be diagnosed by ERCP and were only detectable through cholangioscopy. In one case, a bile duct ulcer due to fungal infection was diagnosed by cholangioscopy. In another case, signs of bile duct inflammation caused by acute cholangitis were evident. One patient developed post-interventional cholangitis. No further procedure-related complications occurred. Thirty-seven isolates were found in bile. Sixteen of these were gram-positive(43.2%), 12(32.4%) were gram-negative bacteria, and Candida species accounted for 24.3% of all isolated microorganisms. Interestingly, only 48.6% of specimens were sensitive to prophylactic antibiotics.CONCLUSION Single-operator cholangioscopy can provide important diagnostic information, helping endoscopists to plan and perform interventional procedures in LT-related biliary complications. | Anna Hüsing-Kabar Hauke Sebastian Heinzow Hartmut Hans-Jürgen Schmidt Carina Stenger Hans Ulrich Gerth Michele Pohlen Gerold Tholking Christian Wilms Iyad Kabar | 2017 | World Journal of Gastroenterology2017，23，22： | 4 |
| 3 | Oxidation of sulfur dioxide to sulfur trioxide over supported vanadia catalysts 显示文摘 | Dunn J P Koppula P R Stenger H G | 1998 | Applied Catalysis B1998，19，： | 1 |
| 4 | Control of Mycobacterium tubercu- losis through mammalian Toll-like receptors 显示文摘 | Stenger S Modlin RL | 2002 | Curr Opin Immuno12002，14，4： | 1 |
| 5 | Gradient compression garments as a countermeasure to post-spaceflight orthostatic in- tolerance 显示文摘 | Stenger MB Brown AK Lee SMC | 2010 | Aviation Space and Environmental Medicine2010，81，： | 1 |
| 6 | CTL-me- diated killing of intracellular Mycobacterium tubercu- losis is independent of target cell nuclear apoptosis 显示文摘 | Thoma-Uszynski S Stenger S Modlin RL | 2000 | J Immunol2000，165，10： | 1 |
| 7 | Oxidation of sulfur dioxide over supported vanadia catalysts : molecular strueture reactivity relationships and reaction kinetics显示文摘 | Dunn J P Stenger H G Wachs I E | 1999 | Catalysis Today1999，5，2： | 1 |
| 8 | Toll-like receptor triggering of a vitamin D-mediated human antimicrobial response 显示文摘 | Liu PT Stenger S Li H | 2006 | Science2006，311，： | 1 |
| 9 | Toll-like receptor triggering of a vitamin D-mediated human antimicrobial response 显示文摘 | Liu PT Stenger S Li H | 2006 | Science2006，311，5768： | 1 |
| 10 | Denitrification capacity in the vadose zone at three sites in the lake taupo catchment, new zealand显示文摘 | Barkle G Clough T Stenger R | 2007 | Australian Journal of Soil Research2007，45，2： | 1 |
| 11 | Mechanical production and stabilization of submicron particles in stirred media mills显示文摘 | MENDEA S STENGER F PEVKERT W | 2003 | Powder Technology2003，132，1： | 1 |
| 12 | Cloning and detection of DNA from a nonculturable plant pathogenic mycoplasma like organism显示文摘 | KIRKPATRICK B C STENGER D C MORRIS T J | 1987 | Science1987，238，： | 1 |
| 13 | IL-10 converts human dendritic cells into macrophage-like cells with increased antibacterial activity against virulent Mycobacterium tuberculosis显示文摘 | Fortsch D Rollinghoff M Stenger S | 2000 | J Immunol2000，165，2： | 1 |
| 14 | Combined use of autoantibodies (IA-2 autoantibody,GAD autoantibody,insulin autoantibody,cytoplasmic islet cell antibodies) in type1 diabetes:Combinatorial Islet Autoantibody workshop显示文摘 | Verge C F Stenger D Bonifacio E | 1998 | Diabetes1998，47，12： | 1 |
| 15 | On the practicability of pentamode mechanical metamaterials 显示文摘 | Kadic M Biickmann T Stenger N | 2012 | Applied Physics Letters2012，100，19： | 1 |
| 16 | The human CD1-restrieted T cell repertoire is limited to cross-reactive antigens: implications for host responses against immunologically related pathogens显示文摘 | Sieling PA Torrelles JB Stenger S | 2005 | J Immunol2005，174，5： | 1 |
| 17 | Toll-like receptor triggering of a vitamin D mediated human antimicrobial response显示文摘 | Liu PT Stenger S Li H | 2006 | Science2006，311，5768： | 1 |
| 18 | An antimicrobial activity of cytolytic T cells mediated by granulysin显示文摘 | Hanson DA Teitelbaum R | 1998 | Science1998，282，： | 1 |
| 19 | Induction of direct antimicrobial activity through mammalian Toll-like receptors显示文摘 | S Stenger | 2001 | Science2001，291，： | 1 |
| 20 | Cloning and detection of DNA from a nonculturable plant pathogenic mycoplasma-like organism显示文摘 | Kirkpatrick B C Stenger D C Morris T J | 1987 | Science1987，238，： | 1 |
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