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Perforated midgut diverticulitis:Revisited

World Journal of Gastroenterology 2012年第34期18卷 4714-4720页

作者： Milan Spasojevic jens marius naesgaard Dejan Ignjatovic Department of Gastrointestinal Surgery Vestfold Hospital3103 TonsbergNorway Department of Digestive Surgery Akershus University HospitalUniversity of Oslo1478 LorenskogNorway

AIM:To study and provide data on the evolution of medical procedures and outcomes of patients suffering from perforated midgut diverticulitis. METHODS:Three data sources were used:the Medline and Google search engines were searched for case reports on one or more patients treated for perforated midgut diverticulitis (Meckel's diverticulitis excluded) that were published after 1995. The inclusion criterion was sufficient individual patient data in the article. Both indexed and non-indexed journals were used. Patients treated for perforated midgut diverticulitis at Vestfold Hospital were included in this group. Data on symptoms, laboratory and radiology results, treatment modalities, surgical access, procedures, complications and outcomes were collected. The Norwegian patient registry was searched to find patients operated upon for midgut diverticulitis from 1999 to 2007. The data collected were age, sex, mode of access, surgical procedure performed and number of patients per year. Historical controls were retrieved from an article published in 1995 containing pertinent individual patient data. Statistical analysis was done with SPSS ***:GroupⅠ:106 patients (48 men) were found. Mean age was 72.2 ± 13.1 years (mean ± SD). Age or sex had no impact on outcomes (P = 0.057 and P = 0.771, respectively). Preoperative assessment was plain radiography in 53.3% or computed tomography (CT) in 76.1%. Correct diagnosis was made in 77.1% with CT, 5.6% without (P = 0.001). Duration of symptoms before hospitalization was 3.6 d (range:1-35 d), but longer duration was not associated with poor outcome (P = 0.748). Eighty-six point eight percent of patients underwent surgery, 92.4% of these through open access where 90.1% had bowel resection. Complications occurred in 19.2% of patients and 16.3% underwent reoperation. Distance from perforation to Treitz ligament was 41.7 ± 28.1 cm. At surgery, no peritonitis was found in 29.7% of patients, local peritonitis in 47.5%, and dif

关键词： Intestinal Small bowel Jejunum Ileum Perforation Diverticulitis Conservative treatment

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Testing the robustness of particle-based separation models for the magnetic separation of a complex skarn ore

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International Journal of Mining Science and Technology 2022年第3期32卷 645-655页

作者： Lucas Pereira Max Frenzel Markus Buchmann marius Kern Raimon Tolosana-Delgado K.Gerald van den Boogaart jens Gutzmer Hemholtz-Zentrum Dresden-Rossendorf Helmholtz Institute Freiberg for Resource Technology09599 FreibergGermany German Aerospace Center Institute of Low-Carbon Industrial Processes03046 CottbusGermany TU Bergakademie Freiberg Institute for Stochastics09599 FreibergGermany

Physical separation processes are best understood in terms of the behaviour of individual ore ***,while different empirical particle-based separation modelling approaches have been developed,their predictive performance has never been tested under variable process ***,we investigated the predictive performance of a state-of-the-art particle-based separation model under variable feed composition for a laboratory-scale magnetic separation of a skarn *** scenarios were investigated:one in which the mass flow of the different processing streams could be measured and one in which it had to be estimated from *** both scenarios,the predictive models were sufficiently general to predict the process outcomes of new samples of variable ***,the scenario in which mass flow could be measured was4%more precise in predicting mass *** process behaviour of minerals present at concentrations above 0.1%by weight could be accurately *** findings indicate the potential use of this method to minimize the costs of metallurgical testwork while providing in-depth understanding of the recovery behaviour of individual ore ***,the method may be used to establish powerful tools to forecast mineral recoveries for partly new ore types at a running mining operation.

关键词： Metallurgical tests Particle-based separation modelling Magnetic separation Cassiterite recovery

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Recent laser upgrades at Sandia's Z-backlighter facility in order to accommodate new requirements for magnetized liner inertial fusion on the Z-machine

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High Power Laser Science and Engineering 2016年第4期4卷 1-12页

作者： jens Schwarz Patrick Rambo Darrell Armstrong marius Schollmeier Ian Smith Jonathan Shores Matthias Geissel Mark Kimmel John Porter Sandia National Laboratories

The Z-backlighter laser facility primarily consists of two high energy, high-power laser systems. Z-Beamlet laser(ZBL)(Rambo et al., Appl. Opt. 44, 2421(2005)) is a multi-kJ-class, nanosecond laser operating at 1054 nm which is frequency doubled to 527 nm in order to provide x-ray backlighting of high energy density events on the Z-machine. Z-Petawatt(ZPW)(Schwarz et al., J. Phys.: Conf. Ser. 112, 032020(2008)) is a petawatt-class system operating at 1054 nm delivering up to 500 J in 500 fs for backlighting and various short-pulse laser experiments(see also Figure 10 for a facility overview). With the development of the magnetized liner inertial fusion(MagLIF) concept on the Z-machine, the primary backlighting missions of ZBL and ZPW have been adjusted accordingly. As a result, we have focused our recent efforts on increasing the output energy of ZBL from 2 to 4 kJ at 527 nm by modifying the fiber front end to now include extra bandwidth(for stimulated Brillouin scattering suppression). The MagLIF concept requires a well-defined/behaved beam for interaction with the pressurized fuel. Hence we have made great efforts to implement an adaptive optics system on ZBL and have explored the use of phase plates. We are also exploring concepts to use ZPW as a backlighter for ZBL driven MagLIF experiments. Alternatively, ZPW could be used as an additional fusion fuel pre-heater or as a temporally flexible high energy pre-pulse. All of these concepts require the ability to operate the ZPW in a nanosecond long-pulse mode, in which the beam can co-propagate with ZBL. Some of the proposed modifications are complete and most of them are well on their way.

关键词： adaptive optics high energy lasers MagLIF OPCPA petawatt lasers SBS suppression

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Machine-learned interatomic potentials by active learning:amorphous and liquid hafnium dioxide

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npj Computational Materials 2020年第1期6卷 803-810页

作者： Ganesh Sivaraman Anand Narayanan Krishnamoorthy Matthias Baur Christian Holm marius Stan Gábor Csányi Chris Benmore Álvaro Vázquez-Mayagoitia Leadership Computing Facility Argonne National LaboratoryArgonneIL 60439USA Institute for Computational Physics Universität StuttgartAllmandring 3Stuttgart 70569Germany Helmholtz-Institute Münster:Ionics in Energy Storage(IEK-12) Forschungszentrum Jülich GmbHCorrensstrasse 46Münster 48149Germany Applied Materials Division Argonne National LaboratoryArgonneIL 60439USA Department of Engineering University of CambridgeTrumpington StreetCambridge CB21PZUK X-ray Science Division Argonne National LaboratoryArgonneIL 60439USA Computational Science Division Argonne National LaboratoryArgonneIL 60439USA

We propose an active learning scheme for automatically sampling a minimum number of uncorrelated configurations for fitting the Gaussian Approximation Potential(GAP).Our active learning scheme consists of an unsupervised machine learning(ML)scheme coupled with a Bayesian optimization technique that evaluates the GAP *** apply this scheme to a Hafnium dioxide(HfO2)dataset generated from a“melt-quench”ab initio molecular dynamics(AIMD)*** results show that the active learning scheme,with no prior knowledge of the dataset,is able to extract a configuration that reaches the required energy fit ***,molecular dynamics(MD)simulations performed using this active learned GAP model on 6144 atom systems of amorphous and liquid state elucidate the structural properties of HfO2 with near ab initio precision and quench rates(i.e.,1.0 K/ps)not accessible via *** melt and amorphous X-ray structural factors generated from our simulation are in good agreement with *** addition,the calculated diffusion constants are in good agreement with previous ab initio studies.

关键词： amorphous dioxide scheme

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模块化机器的安全白皮书

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仪器仪表标准化与计量 2019年第4期 13-14,17页

作者： jens Popper marius BLugel Hagen Burchardt Steffen Horn Joachim Merx DrDetlev Richter Werner Varro Michael Pfeifer Pascal Staub-Lang Technologie-Initiative SmartFactory KL e.V 博世力士乐 Phoenix Contact Electronics GmbH Pilz GmbH&Co.KG TüV南德产品服务有限公司 TüV南德工业服务有限公司

SmartFactoryKL工作组1 '智能基础设施'专门处理模块化工业4.0生产设施的安全问题。其旨在提供一种工厂结构,通过模块化等手段确保其灵活性和可变性。本安型模块具有常规的功能安全性。但是,模块间依然存在依赖关系。在支持未知模块的... 详细信息

SmartFactoryKL工作组1 '智能基础设施'专门处理模块化工业4.0生产设施的安全问题。其旨在提供一种工厂结构,通过模块化等手段确保其灵活性和可变性。本安型模块具有常规的功能安全性。但是,模块间依然存在依赖关系。在支持未知模块的模块化系统中,还需要一个新的安全体系结构。去年,该概念被整合到了工业4.0生产设施中,以实例证明该概念可在当今技术的基础上得以实施。在安全和机器通信的实施中,仅采用了一条单线共存。机器和机器模块可以在运行期间插入生产线或从生产线移除,而不会影响工厂的其它部分。必要的安全相关参数将根据此处导入的安全配置文件自动进行协商、配置和发布。要求如下文所述。

关键词：安全工业4.0 实时动态认证

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模块化机器的安全白皮书（二）

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仪器仪表标准化与计量 2019年第5期 5-10页

作者： jens Popper marius BLugel Hagen Burchardt Steffen Hom Joachim Merx Dr.Detlev Richter Wemer Varro Michael Pfeifer Pascal Staub-Lang Technologie-Initiative SmartFactory KL e.V 博世力士乐 Phoenix Contact Electronics GmbH Pilz GmbH&Co.KG TüV南德产品服务有限公司 TüV南德工业服务有限公司

SmartFactoryKL工作组1 "智能基础设施"专门处理模块化工业4.0生产设施的安全问题。其旨在提供一种工厂结构,通过模块化等手段确保其灵活性和可变性。本安型模块具有常规的功能安全性。但是,模块间依然存在依赖关系。在支持未知模块的... 详细信息

SmartFactoryKL工作组1 "智能基础设施"专门处理模块化工业4.0生产设施的安全问题。其旨在提供一种工厂结构,通过模块化等手段确保其灵活性和可变性。本安型模块具有常规的功能安全性。但是,模块间依然存在依赖关系。在支持未知模块的模块化系统中,还需要一个新的安全体系结构。去年,该概念被整合到了工业4.0生产设施中,以实例证明该概念可在当今技术的基础上得以实施。在安全和机器通信的实施中,仅采用了一条单线共存。机器和机器模块可以在运行期间插入生产线或从生产线移除,而不会影响工厂的其它部分。必要的安全相关参数将根据此处导入的安全配置文件自动进行协商、配置和发布。要求如下文所述。

关键词：安全工业4.0 实时动态认证

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