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Endoscopic transluminal pancreatic necrosectomy using a self-expanding metal stent and high-flow water-jet system

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World Journal of Gastroenterology 2013年第23期19卷 3685-3692页

作者： istván Hritz roland Fejes András Székely iván Székely lászló Horváth gnes Sárkány ron Altorjay lászló madácsy Department of Gastroenterology and Endoscopy Fejér Megyei Szent Gyrgy Teaching HospitalH-8000 Székesfehérvár Hungary intensive Care Unit Department Fejér Megyei Szent Gyrgy Teaching HospitalH-8000 Székesfehérvár Hungary Department of Surgery Fejér Megyei Szent Gyrgy Teaching HospitalH-8000 Székesfehérvár Hungary

Walled-off pancreatic necrosis and a pancreatic abscess are the most severe complications of acute pancreatitis. Surgery in such critically ill patients is often associated with significant mor.idity and mortality within the first few weeks after the onset of symptoms. minimal invasive approaches with high success and low mortality rates are therefore of considerable interest. Endoscopic therapy has the potential to offer safe and effective alternative treatment. We report here on 3 consecutive patients with infected walled-off pancreatic necrosis and 1 patient with a pancreatic abscess who underwent direct endoscopic necrosectomy 19-21 d after the onset of acute pancreatitis. The infected pancreatic necrosis or abscess was punctured transluminally with a cystostome and, after balloon dilatation, a non-covered self-expanding biliary metal stent was placed into the necrotic cavity. Following stent deployment, a nasobiliary pigtail catheter was placed into the cavity to ensure continuous ir.igation. After 5-7 d, the metal stent was removed endoscopically and the necrotic cavity was entered with a therapeutic gastroscope. Endoscopic debridement was performed via the simultaneous application of a high-flow water-jet system; using a flush knife, a Dor.ia basket, and hot biopsy forceps. The transluminal endotherapy was repeated 2-5 times daily during the next 10 d. Suppor.ive care included parenteral antibiotics and jejunal feeding. All patients improved dramatically and with resolution of their septic conditions; 3 patients were completely cured without any further complications or the need for surgery. One patient died from a complication of prolonged ventilation severe bilateral pneumonia, not related to the endoscopic procedure. No procedure related complications were observed. Transluminal endoscopic necrosectomy with temporary application of a self-expanding metal stent and a high-flow water-jet system shows promise for enhancing the potential of this endoscopic app

关键词： Acute necrotizing pancreatitis Walled off pancreatic necrosis Endoscopic necrosectomy Selfexpanding metal stent Water-jet system

Ultrafine Gr.ined HSlA Steels for Cold For.ing

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Journal of iron and Steel research international 2010年第10期17卷 50-56页

作者： r González J O García m A Barbés m J Quintana l F Verdeja J i Verdeja School of Engineering Panamerican University ETSimO Oviedo University

The industrial level production of ultrafine gr.ined （or ultrafine fer.ite） ferrous alloys was investigated through three examples of steels that complied with the EN 10149-2 Euronorm and were produced by advanced con- trolled hot rolling techniques. The steel samples were tension tested and chemically analyzed, and the microstructure was evaluated through quantitative metallographic techniques to deter.ine parameters such as yield stress, amount of microalloying elements, str.in hardening coefficient, gr.in size, and gr.in size distribution. These steels were micro- alloyed with Ti, Nb, and mn with ASTm gr.in sizes of approximately 13--15. The careful control of chemical com- position and deformation during production, giving a specific attention to the deformation sequences, austenite non- reerystallization temperatures and allotropic transformations during cooling, are indispensable to obtain steels with an adequate str.in hardening coefficient that allows cold wor.ing operations such as bending, stretching or drawing.

关键词： ultrafine steel metallography str.in hardening Euronorm

Enhancement of coer.ivity,permeability,and dielectric proper.ies of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) fer.ites for memory and high frequency devices

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Journal of rare Earths 2024年第6期42卷 1128-1135,I0005页

作者： i.Sardar m.D.Hossain m.S.Sikder m.N.i.Khan m.r.rahman Physics Discipline Khulna UniversityKhulna9208Bangladesh Department of Physics Khulna University of Engineering&TechnologyKhulna9203Bangladesh Department ofComputer Science and Engineering Northern University of Business&Technology KhulnaKhulna9100Bangladesh material Science Division Atomic Energy CentreDhaka1000Bangladesh

Spinel cubic fer.ites have huge applications in me mory and high frequency *** the improvement of these modern devices,the magnetic coer.ivity,permeability,and dielectric proper.ies of a fer.ite are the important *** ar.icle focuses on improving the magnetic coer.ivity,magnetic permeability,and dielectric proper.ies of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) fer.ites,where x=0.00,0.06,and *** X-ray diffraction(XrD),Fourier transform infrared spectroscopy(FTir),field emission scanning electron microscopy(FESEm),energy disper.ive X-ray(EDX),vibrating sample magnetometer(VSm),and an impedance analyzer were used to characterize the structural,magnetic,and dielectric proper.ies of the *** XrD patterns indicate the formation of spinel cubic structure of the samples with a secondary peak(EuFeO_(3))for Eu doped *** densities and porosities of the samples follow an inverse trend,where the doped samples’lattice parameters are increased with the increment of rare earth Eu *** FTir analysis also proves the spinel cubic phase of the *** average gr.in size of the fer.ites is obtained via FESEm images,and it is increased from 121 to 198 *** analysis confirms that doping of the Eu content also changes other hysteresis loop proper.ies of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ***,the coer.ivity of the Eu doped samples is greater than that of the mother alloy(x=0.00).The EDX study shows that there is no impurity contamination in the *** permeability and dielectric measurements show an improved quality factor of the Eu-doped samples with low magnetic and dielectric *** dependent resistivity and impedance analysis also show the improved *** the observed proper.ies of the samples,all the investigated fer.ites might be strong candidates for potential applications in memory devices,magnetic sensors,and high frequency applications.

关键词： Fer.ites raree arths Coer.ivity Permeability EDX resistivity

Ankle-Foot Continuous Passive motion Device for mobilization of Acute Stroke Patients

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Open Journal of Therapy and rehabilitation 2015年第2期3卷 23-34页

作者： Csilla Vér Gergely Hofgárt lászló menyhárt lászló Kardos lászló Csiba Department of Neurology University of Debrecen Debrecen Hungary medical Systems Hungary ltd. Debrecen Hungary Kenézy Gyula County Hospital Debrecen Hungary

Purpose: To develop a continuous passive motion (CPm) device for the passive motion of the paretic ankle-foot and investigate the effect of continuous passive motion of bedridden, hemiparetic acute stroke patients. methods: 49 patients with stroke were investigated. results in stroke patients (device group) were compared with those of 15 control subjects (manual group) also with stroke but not treated by device. The period of the treatment was 7 days;the duration was 30 minutes per day by CPm device in the device group. The efficacy of the device was evaluated by scales used in the clinical routine (6th item of National institutes of Health Stroke Scale (NiHSS), modified Ashworth Scale (mAS), modified rankin Scale (mrS)). Ankle’s passive range of motion (PrOm) and flexible equinovalgus defor.itiy were measured every day with a goniometer. results: 6th item of NiHSS score improved by -0.76 (SD = 0.56) points in the device group (p mpared to the baseline values;the mean change in the manual group was -0.33 (SD = 0.62) points (p = 0.055). The mean of mAS decreased significantly by -0.53 (SD = 1.12) point in the device group (p le’s mean plantar flexion PrOm increased by 3.41 (SD = 5.19) degrees in the device group (p ignificant improvement of the mean dor.iflexion in the PrOm of the ankle was also detected (p = 0.019). The equinovalgus improved significantly by -5.12 (SD = 8.02) degrees (p in the device group. The scores of the mrS also improved significantly in the device group (p lusion: in the early phase of rehabilitation, ankle-foot continuous passive motion device treatment combined with manual therapy improved the ankle’s PrOm better than manual therapy alone;in addition, device treatment decreased the foot’s equinovalgus, improved the 6th item NiHSS score, and decreased the severity of spasticity.

关键词： Stroke Ankle Continuous Passive motion Equinovalgus

Vaccination effect on a stochastic epidemic model with healing and relapse

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international Journal of Biomathematics 2024年第1期17卷 29-59页

作者： m.m.Abdeslami l.Basri m.El Fatini i.Sekkak r.Taki laboratory of Par.ial Differential Equations Spectral Algebra and Geometry Department of mathematics Faculty of Sciences Ibn Tofail UniversityBP 133KénitraMorocco Centre de recherche en Sante Publique montréal(Québec)H3N 1X9 Canada Departement de Medecine Sociale et Preventive Ecole de SantéPublique de I'Universitéde Montreal 101Avenue du ParcMontréal(Quebec)H3N 1X9Canada EST Sidi Bennour Chouaib Doukkali UniversityEl JadidaMorocco

in this work,we consider a stochastic epidemic model with vaccination,healing and *** prove the existence and the uniqueness of the positive *** establish sufficient conditions for the extinction and the per.istence in mean of the stochastic ***,we also establish sufficient conditions for the existence of ergodic stationary distribution to the model,which reveals that the infectious disease will *** graphical illustrations of the approximate solutions of the stochastic epidemic model have been performed.

关键词： Stochastic epidemic model with relapse and healing vaccination extinction per.istence in mean markov semigroup stationary distribution

Anti-amyloid antibodies in Alzheimer’s disease: what did clinical trials teach us?

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Neural regeneration research 2025年第4期20卷 1092-1093页

作者： Danko Jeremic lydia Jiménez-Díaz Juan D.Navarro-lópez NeuroPhysiology&Behavior lab University of Castilla-La ManchaBiomedical Research Center(CRIB)School of Medicine of Ciudad RealCiudad RealSpain

Although many causes of Alzheimer’s disease(AD)may exist,both the original amyloid cascade and tau hypotheses posit that abnormal misfolding and accumulation of amyloid-β(Aβ)and tau protein is the central event causing the ***,that conclusion could be only partly true,and there is conflicting evidence about the role of both proteins in AD,being able to precede and influence one *** researchers argue that these proteins are mere executors rather than primary causes of ***,there have been continuing refinements of both hypotheses,with alternative explanations proposed.Aβand tau proteins may be independently involved in specific neurotoxic pathways;yet there may be other crucial processes going on in early ***,accumulating evidence suggests that Aβand tau act syner.istically,rather than additively in disease onset(Jeremic et al.,2021,2023a).

关键词： amyloid Alzheimer additive

Baryon resonance analysis from SAiD

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Chinese Physics C 2009年第12期33卷 1063-1068页

作者： r. A. Arndt W. J. Briscoe m. W. Paris i. i. Strakovsky r. l. Workman Center for Nuclear Studies Department of Physics The George Washington University Washington D.C. 20052 USA

We discuss the analysis of data from πN elastic scattering and single pion photo- and electroproduction. The main focus is a study of low-lying non-strange baryon resonances. Here we concentrate on some difficulties ... 详细信息

关键词： non-strange baryons N(1440) pion-nucleon elastic scattering pion photo- and electro-production

Numerical modelling of the Aeroelastic Behaviour and Variable loads for the Tur.ine Stage in 3D Transonic Flow

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Journal of Thermal Science 2005年第3期14卷 236-241页

作者： V.i. GNESiN l.V. KOlODYAZHNAYA r. rZADKOWSKi Department of Aerohydromechanics Institute of Mechanical Engineering Problems National Academy of Sciences of Ukraine 2/10 Pozharsky st. Kharkov 61046 Ukraine ProfessorDepartment of Aerohydromechanics Institute of Mechanical Engineering Problems National Academy of Sciences of Ukraine 2/10 Pozharsky st. Kharkov 61046 UkraineDepartment of Dynamics of Machines Institute of Fluid Flow Machinery Polish Academy of Sciences J. Fiszera st. 14 Gdansk 80 952 Poland

in this study presented the algorithm proposed involves the coupled solution of 3-D unsteady flow through a tur.ine stage and the dynamics problem for rotor-blade motion by the action of aerodynamic forces, without separating the outer and inner flow fluctuations. The par.ially integrated method involves the solution of the fluid and structural equations separately, but information is exchanged at each time step, so that solution from one domain is used as a boundary condition for the other domain. 3-D transonic gas flow through the stator and rotor blades in relative motion with periodicity on the whole annulus is described by the unsteady Euler conservation equations, which are integrated using the explicit monotonous finite-volume difference scheme of Godunov-Kolgan. The structural analysis uses the modal approach and a 3-D finite element model of a blade. A calculation has been done for the last stage of the steam tur.ine, under design and off-design regimes. it is shown that the amplitude-frequency spectrum of blade oscillations contains the high frequency harmonics, corresponding to the rotor moving past one stator blade pitch, and low frequency harmonics caused by blade oscillations and flow nonunifor.ity downstream from the blade row; moreover, the spectrum involves the harmonics which are not multiples of the rotation frequency.

关键词： tur.ine stage 3D unsteady flow blade oscillations

Nano-Enhanced Dairy Scum Biodiesel Blends:Unleashing the Power of Aluminium Oxide for Sustainable and Efficient Engine Performance

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Journal of Thermal Science 2025年第1期34卷 283-302页

作者： Veeranna mODi Prasad B.rAmPUrE Sunil Kumar SHETTY madeva NAGArAl Channa Keshava NAiK N Johar mGm muhammad irsyad ABDUllAH Abdullah i.Al-mANSOUr Shamshad AlAm KlE College of Engineering and Technology ChikodiVisvesvaraya Technological University Nitte (Deemed to be Univer.ity) NMAM Institute of Technology (NMAMIT)Department of Mechanical Engineering Aircraft research and Design Centre HAL Department of mechanical Engineering BGS College of Engineering and TechnologyBengaluruAffiliated to Visvesvaraya Technological University management and Science Univer.ity Department of Civil Engineering College of EngineeringKing Saud University

This study investigates the effect of aluminium oxide nanopar.iclesaddition to biodiesel blends made from dairy milk scum on performance and combustion characteristics of the diesel *** disper.ion of Al2O3nanopar.icles in B20 blends at different concentrations was done with the help of *** number of blends were prepared for the *** machine lear.ing algorithms(random Forest（rF）and CatBoost) was used for the *** results show that in comparison to biodiesel blends without nanopar.icles,the kinematic viscosity and density is higher for fuel blends with *** these Fuel blends have higher calorific *** blends exhibited reduced Brake Specific Fuel Consumption（BSFC） of2.85% than the blends without nano par.icles(Dairy Scum methyl Ester Biodiesel 20%+Neat Diesel 80%（in volume）,DSmEB20),57.14% less CO,40.8% less hydrocarbon,and increased NOxemissions compared to conventional diesel,contributing to the development of environmentally friendly and renewable biofuel blends with *** B20NP30 is the optimal blend for performance and emission *** study concludes with findings on enhanced Brake Thermal Efficiency（BTE） of 26.29% in 3×10-5（in volume） Al2O3nanopar.icle-blended DSmE B20 and other DSmE B20 fuel blends,emphasizing the importance of optimal nanopar.icle *** correlation matrix shows how engine load,efficiency measures（BTE,BSFC）,and emissions（CO,CO2,NOx,Smoke） are connected in complex *** results help us understand the complicated dynamics of engine performance and emission characteristics ***'s diagram for BTE and BSFC shows that CatBoost-based BTE models perform superior to rF-based models during the tr.ining as well as testing *** results were obtained for CO and CO2emission results.

关键词： Al2O3 concentration Ci engine Dairy Scum methyl Ester Biodiesel