检索结果-南通市图书馆

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

框架结构弹塑性分析的一种有效数值方法

钢结构(中英文) 2010年第7期 75-75页

作者： konstantinos v.spiliopoulos Theodoros N.Patsios

框架结构的不完全弹塑性分析是一个非线性过程,按照假定的加载模式,利用荷载因子进行逐步加载。基于力学和数值方法,研究框架结构的极限承载力和变形能力。假定材料为理想弹塑性,并利用零长度塑性铰模拟塑性行为。该方法基于增量方程,... 详细信息

框架结构的不完全弹塑性分析是一个非线性过程,按照假定的加载模式,利用荷载因子进行逐步加载。基于力学和数值方法,研究框架结构的极限承载力和变形能力。假定材料为理想弹塑性,并利用零长度塑性铰模拟塑性行为。该方法基于增量方程,类似于求解两个连续塑性铰之间的凸二次参数规划问题。利用虚荷载因子将凸二次参数规划转化为凸二次规划,并使用标准算法求解凸二次规划问题,可满足出现塑性铰的要求并自动判别塑性。该方法起初仅适用于纯弯作用,后延伸至弯矩-轴力共同作用。分别分析单调、变化、循环加载作用下的算例。整个过程稳定、可靠、高效,并比基于直接刚度法的交替位移方法更省时。

关键词：数值方法二次规划力学方法图论塑性铰板弯曲弯矩-轴力共同作用有限元静力弹塑性循环加载

Is there sufficient evidence to support the use of antibiotic holiday just before the second stage of an infected total hip or knee arthroplasty revision surgery?

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Orthopedics 2024年第5期15卷 483-485页

作者： konstantinos Tsikopoulos konstantinos Sidiropoulos Department of Orthopaedics Portsmouth Hospitals NHS University TrustPortsmouth University HospitalsPortsmouth PO63LYUnited Kingdom Emergency Department Papageorgiou General Hospital of ThessalonikiThessaloniki 54635Greece Medical School University of PatrasPatras 26504Greece

The practice of implementing an antibiotic holiday before the second stage of hip or knee arthroplasty is currently controversial due to limited evidence for this approach,as per the International Consensus Meeting 2018 on Musculoskeletal Infection.A greater understanding of this issue could augment the quality of Alrayes and Sukeik’s mini-review(2023)on diagnosing,managing,and treating periprosthetic knee ***,a significant lack of literature exists concerning the optimal duration for the antibiotic holiday,calling for more research before establishing any clinical guidelines.

关键词： Septic knee prosthesis revision Two stages Antibiotic holiday

Modeling and optimization of non-isothermal convective drying process of Lavandula×allardii

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Information Processing in Agriculture 2024年第1期11卷 1-13页

作者： vasileios Chasiotis konstantinos-Stefanos Nikas Andronikos Filios Laboratory of Thermo Fluid Systems(LTFS) Department of Mechanical EngineeringUniversity of West AtticaAncient Olive Grove CampusThivon Str.250GR12244 EgaleoGreece

Non-isothermal convective drying schemes were examined for Lavandula×allardii leaves and *** process parameters were optimized using response surface methodology(RSM)to ensure the peak operational *** effects of temperature increase rate(2–4°C/h)and the airflow velocity(1–3 m/s)on the essential oil yield,drying duration and consumption,were investigated.A face-centered central composite design was deployed and the experimental data was adapted to the most suitable polynomial models,as determined by the regression *** of variance was applied to assess the effects of the process variables,their interactions and the statistical significance of the examined *** factors of temperature increase rate and airflow velocity had a significant impact on the drying *** velocity had a greater effect on leaves’essential oil yield and inflorescences’process energy consumption,whereas the rates of temperature increase had a greater influence on the inflorescences’essential oil yield and leaves’energy *** minimum drying duration and energy consumption were obtained for the maximum temperature increasing rate at 3 and 1 m/s airflow velocities respectively;and the highest essential oil yield was obtained for the least rate of temperature increase and airflow velocity for both leaves and *** optimization was performed for minimizing drying duration and energy consumption by maximizing the essential oil *** rate of temperature increases of 4°C/h and the airflow velocity of 1 m/s,were proposed as the optimum non-isothermal drying conditions for both leaves and inflorescences of Lavandula×*** values of essential oil content have been 1.387/3.05 mL/g,4.21/4.18 h drying time and 0.809/0.732 kWh energy consumption at the optimum operation point for leaves and inflorescences,*** resulted optimized non-stationary temperature scheme considerably improved the drying

关键词： Convective drying Non-isothermal drying Lavender Essential oil Process optimization

Selective internal radiation therapy segmentectomy:A new minimally invasive curative option for primary liver malignancies?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第18期30卷 2379-2386页

作者： Riccardo Inchingolo Francesco Cortese Antonio Rosario Pisani Fabrizio Acquafredda Roberto Calbi Riccardo Memeo Fotis Anagnostopoulos Stavros spiliopoulos Unit of Interventional Radiology “F.Miulli”Regional General HospitalBari 70021Italy Interdisciplinary Department of Medicine Section of Nuclear MedicineUniversity of Bari“Aldo Moro”Bari 70121Italy Department of Radiology General Regional Hospital“F.Miulli”Acquaviva delle Fonti 70021Italy Unit of Hepato-Pancreatic-Biliary Surgery “F.Miulli”Regional General HospitalBari 70021Italy The Second Radiology Department National and Kapodistrian University of AthensChaidari Athens 12461Greece

Transarterial radioembolization or selective internal radiation therapy(SIRT)has emerged as a minimally invasive approach for the treatment of *** percutaneous technique involves the local,intra-arterial delivery of radioactive microspheres directly into the *** employed as a palliative measure for liver malignancies,SIRT has gained traction over the past decade as a potential curative option,mirroring the increasing role of radiation *** latest update of the BCLC hepatocellular carcinoma guidelines recognizes SIRT as an effective treatment modality comparable to other local ablative methods,particularly well-suited for patients where surgical resection or ablation is not *** segmentectomy is a more selective approach,aiming to deliver high-dose radiation to one to three specific hepatic segments,while minimizing damage to surrounding healthy *** research efforts in radiation segmentectomy should prioritize optimizing radiation dosimetry and refining the technique for super-selective administration of radiospheres within the designated hepatic segments.

关键词： Transarterial radioembolization Selective internal radiation therapy Radiation segmentectomy Hepatocellular carcinoma Primary liver malignancies Personalised dosimetry

New perspectives in the management of diabetic nephropathy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Diabetes 2024年第6期15卷 1086-1090页

作者： Anna Psyllaki konstantinos Tziomalos The First Propedeutic Department of Internal Medicine Medical SchoolAristotle University of ThessalonikiAHEPA HospitalThessaloniki 54636Greece

Diabetic nephropathy(DN)is the leading cause of end-stage renal disease and is also associated with increased risk for cardiovascular *** recently,strict glycemic control and blockade of the renin-angiotensin system(RAS)constituted the mainstay of treatment of ***,randomized controlled trials showed that sodium-glucose cotransporter 2 inhibitors further reduce the progression of ***,these agents are recommended in all patients with DN regardless of DN stage and HbA1c ***,additional blockade of the RAS with finerenone,a selective non-steroidal mineralocorticoid receptor antagonist,was also shown to prevent both the decline of renal function and cardiovascular events in this ***,promising preliminary findings suggest that glucagon-like peptide 1 receptor agonists might also exert reno-and cardioprotective effects in patients with ***,this knowledge will improve the outcomes of this high-risk group of patients.

关键词： Diabetes mellitus Diabetic nephropathy Sodium-glucose cotransporter 2 inhibitors Finerenone Glucagon-like peptide 1 receptor agonists Finerenone

An explainable AI model for power plant NOx emission control

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Energy and AI 2024年第1期15卷 171-180页

作者： Yuanye Zhou Ioanna Aslanidou Mikael Karlsson konstantinos Kyprianidis School of Business Society and EngineeringMälardalens UniversityUniversitetsplan 172220VästeråsSweden Future Energy Centre Mälardalens UniversityUniversitetsplan 172220VästeråsSweden School of Innovation Design and EngineeringMälardalens UniversityUniversitetsplan 172220VästeråsSweden

In recent years,developing Artificial Intelligence(AI)models for complex system has become a popular research *** have been several successful AI models for predicting the Selective Non-Catalytic Reduction(SNCR)system in power plants and large ***,all these models are in essence black box models and lack of explainability,which are not able to give new *** this study,a novel explainable AI(XAI)model that combines the polynomial kernel method with Sparse Identification of Nonlinear Dynamics(SINDy)model is proposed to find the governing equation of SNCR system based on 5-year operation data from a power *** proposed model identifies the system’s governing equation in a simple polynomial format with polynomial order of 1 and only 1 independent variable among original 68 input *** addition,the explainable AI model achieves a considerable accuracy with less than 21%deviation from base-line models of partial least squares model and artificial neural network model.

关键词： Explainable AI SINDy Kernel SNCR Power plant Boiler

Understanding autoimmune pancreatitis: Clinical features, management challenges, and association with malignancies

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第15期30卷 2091-2095页

作者： Grigorios Christodoulidis Marina Nektaria Kouliou konstantinos Eleftherios Koumarelas Department of General Surgery University Hospital of LarissaUniversity of ThessalyLarissa 41110Greece

In this editorial we comment on the article by Jaber et *** pancreatitis(AIP)represents a distinct form of pancreatitis,categorized into AIP-1 and AIP-2,characterized by obstructive jaundice,lymphoplasmacytic infiltrate,and ***-1,associated with elevated immunoglobulin G4(IgG4)levels,exhibits higher relapse rates,affecting older males,while AIP-2 is less common and linked to inflammatory bowel *** is considered a manifestation of IgG4-related systemic disease,sharing characteristic histological *** are the primary treatment,with emerging biomarkers like interferon alpha and *** poses an increased risk of various malignancies,and the assoc-iation with pancreatic cancer is *** is reserved for severe cases,necessitating careful evaluation due to diagnostic *** patients may have concurrent PanINs but display favorable long-term outcomes compared to pancreatic cancer *** diagnostic assessment,including biopsy and steroid response,is crucial for informed surgical decisions in AIP.

关键词： Autoimmune pancreatitis Immunoglobulin G4-related disease Pancreatic cancer Surgery

Revolutionizing gastric cancer treatment:The potential of immunotherapy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第4期30卷 286-289页

作者： Grigorios Christodoulidis konstantinos Eleftherios Koumarelas Marina Nektaria Kouliou Department of General Surgery University Hospital of LarissaLarissa 41110Greece

Gastric cancer,a prevalent malignancy worldwide,ranks sixth in terms of frequency and third in fatality,causing over a million new cases and 769000 annual *** in Eastern Europe and Eastern Asia,risk factors include family medical history,dietary habits,tobacco use,Helicobacter pylori,and Epstein-Barr virus ***,gastric cancer is often diagnosed at an advanced stage,leading to a grim prognosis,with a 5-year overall survival rate below 5%.Surgical intervention,particularly with D2 Lymphadenectomy,is the mainstay for early-stage cases but offers limited *** advanced cases,the National Comprehensive Cancer Network recommends chemotherapy,radiation,and targeted *** immunotherapy presents promise,especially for unresectable or metastatic cases,with strategies like immune checkpoint inhibitors,tumor vaccines,adoptive immunotherapy,and nonspecific *** this Editorial,with regards to the article“Advances and key focus areas in gastric cancer immunotherapy:A comprehensive scientometric and clinical trial review”,we address the advances in the field of immunotherapy in gastric cancer and its future prospects.

关键词： Immunotherapy Adaptive immunotherapy Tumor vaccines Chimeric antigen receptor therapy Tumor-infiltrating lymphocytes therapy Natural killer therapy Cytokine-induced killer therapy Engineered T cell receptor therapy Immune checkpoint inhibitors

Double role of depression in gastric cancer:As a causative factor and as consequence

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第10期30卷 1266-1269页

作者： Grigorios Christodoulidis Koumarelas konstantinos-Eleftherios Kouliou Marina-Nektaria Department of General Surgery University Hospital of LarissaLarissa 41110Greece

In this editorial we comment on the article“Hotspots and frontiers of the rela-tionship between gastric cancer and depression:A bibliometric study”.Gastric cancer(GC)is a common malignancy in the digestive system with increased mortality and morbidity rates *** treatments,such as gastrectomy,negatively impact patients'quality of life and beyond the physical strain,GC patients face psychological challenges,including anxiety and *** prevalence of depression can be as high as 57%,among gastrointestinal cancer *** to the advancements in treatment effectiveness and increased 5-year overall survival rates,attention has shifted to managing psychological ***,the significance of managing the depression doesn’t lie solely in the need for a better psychological *** leads to chronic stress acti-vating the sympathetic nervous system and the hypothalamus-pituitary-adrenal axis,leading release of catecholamines inducing tumor proliferation,migration,and metastasis,contributing to GC *** dysregulation of neurotrans-mitters and the involvement of various signaling pathways underscore the complex interplay between depression and *** strategies are required to address the psychological aspects of GC,including region-specific interventions and increased monitoring for *** the intricate relationship between depression and GC progression is essential for developing effective therapeutic strategies and improving overall outcomes for patients facing this complex *** this Editorial we delve into double role of depression in the pathogenesis of GC and as a complication of it.

关键词： Gastric cancer Depression Anxiety Chronic stress Pathogenesis of gastric cancer