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Comparison of methods for vibration analysis of electrostatic precipitators

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Acta Mechanica Sinica 2011年第1期27卷 72-79页

作者： Iwona Adamiec-Wójcik andrzej nowak Stanisaw Wojciech Department of Applied Computer Science University of Bielsko-Biaa

The paper presents two methods for the formulation of free vibration analysis of collecting electrodes of *** first,called the hybrid finite element method, combines the finit element method used for calculations of spring deformations with the rigid finite element method used to reflect mass and geometrical features,which is called the hybrid finite element *** a result,a model with a diagonal mass matrix is *** to a specific geometry of the electrodes,which are long plates of complicated shapes,the second method proposed is the strip method which is a semi-analytical *** strip method allows us to formulate the equations of motion with a considerably smaller number of generalized *** of numerical calculations obtained by both methods are compared with those obtained using commercial software like ANSYS and *** compatibility of results is achieved.

关键词： Finite element method · Rigid finite element method · Strip method · Free vibration analysis · Electrostatic precipitators

Endosonography with linear array instead of endoscopic retrograde cholangiography as the diagnostic tool in patients with moderate suspicion of common bile duct stones

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World Journal of Gastroenterology 2003年第3期9卷 612-614页

作者： Maciej Kohut andrzej nowak Ewa nowakowska-Dufawa Tomasz Marek Roman Kaczor Gastroenterology Department of Silesian Medical Academy KatowicePoland

AIM: To evaluate the diagnostic efficiency of endoscopic ultrasound (EUS) as the main imaging modality in patients with moderate suspicion of common bile duct stones (CBDS).METHODS: 55 patients with moderate clinical suspicion of CBDS were prospectively included to the study and evaluated with EUS. This study was done in single blind method in the clinical and biochemical data of patients. EUS was done with echo-endoscope Pentax FG 32-UA (f=5-7,5 MHz) and Hitachi EUB 405 ultrasound machine. Patients diagnosed with CBDS by EUS were excluded from this study and treated with ERC. All the other patients were included to the follow up study obtained by mail every 6 months for clinical evaluation (need of ERC or surgery).RESULTS: CBDS was found in 4 patients by EUS. Diagnosis was confirmed in all cases on ERC. The remaining 51 patients without CBDS on EUS were followed up for 6-26 months (meanly 13 months) There were: 40 women, 42cholecystectomized patients, aged: 55 (mean). Biochemical values (mean values) were as follows: bilirubin: 14,9 μmol.L-1,alkaline phosphatase: 95 IU.L-,1 γ-GTP: 131 IU.L-1, ALT: 50IU.L-1, AST: 49 IU.L-1, Only 1 patient was lost for follow *** the remaining 50 patients with follow up, there was only 1 (2 %) patient with persistent biliary symptoms in whom CBDS was finally diagnosed by ERC with ES. All other patients remained symptoms free on follow up and did not require ERC or biliary ***: Vast majority of patients with moderate suspicion of CBDS and no stones on EUS with linear array can avoid invasive evaluation of biliary tree with ERC.

关键词：胆管结石内窥镜逆行胆管造影内窥镜超声检测影像学诊断

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预应力混凝土桥梁的使用性能标准

世界桥梁 1987年第3期 36-41+13页

作者： andrzej S.nowak ,Hid N.Grouni ,吴宝兴浙江省交通设计院

使用性能的极限状态,诸如裂纹、疲劳、挠度及振动等,通常控制桥梁的设计。因此,提出合适的设计标准是很重要的。由于本文主要关心的是桥梁因受荷载(载重车辆)的重复作用而引起的累积损伤,所以拟用的近似法仅取决于荷载的大小及其出现... 详细信息

使用性能的极限状态,诸如裂纹、疲劳、挠度及振动等,通常控制桥梁的设计。因此,提出合适的设计标准是很重要的。由于本文主要关心的是桥梁因受荷载(载重车辆)的重复作用而引起的累积损伤,所以拟用的近似法仅取决于荷载的大小及其出现的频率,而不是使桥梁处于强度极限状态时的荷载值。在预应力混凝土梁桥中,每片梁的活载谱依梁的位置而不同。根据活载出现的频率,提出每片梁活载的累积分布函数和推导出裂纹、疲劳和振动/挠度上限值的设计标准。

关键词： SLS 累积分布函数荷载谱弯矩弯曲力矩载重车使用性能裂纹高倍缺陷(金属)

The Nutritional Value of Yellow Lupine (Lupinus luteus)for Growing Pigs

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Journal of Agricultural Science and Technology(A) 2019年第6期9卷 351-363页

作者： Anita Zaworska-Zakrzewska Malgorzata Kasprowicz-Potocka Piotr nowak Zuzanna Wisniewska andrzej Rutkowski Department of Animal Nutrition Poznan University of Life SciencesPoznanWolynska 3360-637Poland

The aim of the study was a comparison of the composition and apparent total tract digestibility (ATTD) of nutrients in the seeds of two varieties of yellow lupine (YL). Moreover, an examination of the level of soybean meal (SBM) substitution by YL meal and in a combination with rapeseed meal (RSM) on the pigs’ performance was performed. In a digestibility trial, 30 male pigs were tested using a marker method. In two growth experiments, 60 pigs (in each) were fed diets where SBM was replaced by YL in 0%, 20%, 40%, 60%, 80% and 100% or by a mixture of RSM and YL or by both these components. The chemical composition of varieties differed among crude protein (CP), fiber, acid detergent fiber (ADF), neutral detergent fiber (NDF) and fat. The digestibility coefficients of protein, fat and gross energy were similar for both varieties. The substitution of SBM with YL did not negatively affect the pigs’ performance. A mixture of RSM with YL had no negative effect on growth parameters, except for the starter phase, when a level of above 15% RSM in the diet reduced the pigs’ gains. In conclusion, YL alone and with RSM may be a sustainable alternative to SBM in pig nutrition.

关键词： Alternative protein source chemical composition digestibility growth pig yellow lupine

Apolipoprotein E variants correlate with the clinical presentation of paediatric inflammatory bowel disease:A cross-sectional study

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World Journal of Gastroenterology 2021年第14期27卷 1483-1496页

作者： Aleksandra Glapa-nowak Mariusz Szczepanik Barbara Iwańczak Jarosław Kwiecień Anna Barbara Szaflarska-Popławska Urszula Grzybowska-Chlebowczyk Marcin Osiecki Marcin Dziekiewicz andrzej Stawarski Jarosław Kierkuś Tomasz Banasiewicz Aleksandra Banaszkiewicz Jarosław Walkowiak Department of Pediatric Gastroenterology and Metabolic Diseases PoznańUniversity of Medical SciencesPoznań60-572Poland Department of Pediatrics Medical University of WroclawWroclaw 50-369Poland Department of Pediatrics Faculty of Medical Sciences in ZabrzeMedical University of SilesiaZabrze 41-800Poland Department of Pediatrics Faculty of Medical SciencesMedical University of Silesia in KatowiceKatowice 40-752Poland Department of Gastroenterology HepatologyFeeding Disorders and PaediatricsThe Children’s Memorial Health InstituteWarsaw 04-730Poland Department of Pediatric Gastroenterology and Nutrition Medical University of WarsawWarsaw 02-091Poland Department and Clinic of Pediatrics Gastroenterology and NutritionWroclaw Medical UniversityWroclaw 50-369Poland Chair and Department of General Surgery Gastroenterological Surgical Oncology and Plastic SurgeryPoznańUniversity of Medical SciencesPoznań60-355Poland

BACKGROUND It has been suggested that apolipoprotein E(APOE)polymorphisms are associated with the risk of developing inflammatory bowel disease(IBD)and the early age of disease ***,there are no reports regarding the relationship with clinical characteristics and disease *** To summarise that APOE polymorphisms are associated with the risk of developing IBD and the early age of disease *** In total,406 patients aged 3-18 with IBD(192 had ulcerative colitis and 214 had Crohn’s disease)were genotyped using the TaqMan hydrolysis probe *** expression was described at diagnosis and the worst flare by disease activity scales,albumin and C-reactive protein levels,localisation and behaviour(Paris classification).Systemic steroid intake with the total number of courses,immunosuppressive,biological,and surgical treatment with the time and age of the first intervention were *** total number of exacerbation-caused hospitalisations,the number of days spent in hospital due to exacerbation,the number of relapses,and severe relapses were also *** Ulcerative colitis patients with the APOEε4 allele had lower C-reactive protein values at diagnosis(P=0.0435)and the worst flare(P=0.0013)compared to patients with the APOEε2 allele and genotype APOEε3/ε***’s disease patients with the APOEε2 allele scored lower on the Pediatric Crohn’s Disease Activity Index at diagnosis(P=0.0204).IBD patients with APOEε2 allele spent fewer days in the hospital due to relapse(P=0.0440).CONCLUSION APOE polymorphisms are associated with the risk of developing IBD and the clinical expression of ***,the clinical relevance of the differences identified is rather modest.

关键词： Apolipoprotein E polymorphism Crohn’s disease Ulcerative colitis Immunosuppression Surgery Disease severity

Possible involvement of group Ⅱ/Ⅲ metabotropic glutamate receptors in the mechanism of action of antidepressant drugs

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Possible involvement of group Ⅱ/Ⅲ metabotropic glutamate r...