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Performance of Lung Cancer Prediction Methods Using Different Classification Algorithms

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Computers, Materials & Continua 2021年第5期67卷 2015-2028页

作者： yasemin gültepe Department of Computer Engineering Engineering and Architecture FacultyKastamonu UniversityKastamonu37200Turkey

In 2018,1.76 million people worldwide died of lung *** of these deaths are due to late diagnosis,and early-stage diagnosis significantly increases the likelihood of a successful treatment for lung *** learning is a branch of artificial intelligence that allows computers to quickly identify patterns within complex and large datasets by learning from existing ***-learning techniques have been improving rapidly and are increasingly used by medical professionals for the successful classification and diagnosis of early-stage *** are widely used in cancer *** particular,machine learning has been used in the diagnosis of lung cancer due to the benefits it offers doctors and *** this context,we performed a study on machine-learning techniques to increase the classification accuracy of lung cancer with 32×56 sized numerical data from the Machine Learning Repository web site of the University of California,*** this study,the precision of the classification model was increased by the effective employment of pre-processing methods instead of direct use of classification *** datasets were derived with pre-processing methods and six machine-learning classification methods were used to achieve this *** study results suggest that the accuracy of the k-nearest neighbors algorithm is superior to random forest,naïve Bayes,logistic regression,decision tree,and support vector *** performance of pre-processing methods was assessed on the lung cancer *** most successful preprocessing methods were Z-score(83%accuracy)for normalization methods,principal component analysis(87%accuracy)for dimensionality reduction methods,and information gain(71%accuracy)for feature selection methods.

关键词： Lung cancer machine learning dimensionality reduction normalization feature selection

Stepping up after spinal cord injury:negotiating an obstacle during walking

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Neural Regeneration Research 2025年第7期20卷 1919-1929页

作者： Alain Frigon Charly g.Lecomte Department of Pharmacology-Physiology Faculty of Medicine and Health SciencesUniversitéde SherbrookeCentre de recherche du Centre Hospitalier Universitaire de SherbrookeSherbrookeQCCanada

Every day walking consists of frequent voluntary modifications in the gait pattern to negotiate *** spinal cord injury,stepping over an obstacle becomes *** over an obstacle requires sensorimotor transformations in several structures of the brain,including the parietal cortex,premotor cortex,and motor *** information and planning are transformed into motor commands,which are sent from the motor cortex to spinal neuronal circuits to alter limb trajectory,coordinate the limbs,and maintain *** spinal cord injury,bidirectional communication between the brain and spinal cord is disrupted and animals,including humans,fail to voluntarily modify limb trajectory to step over an ***,in this review,we discuss the neuromechanical control of stepping over an obstacle,why it fails after spinal cord injury,and how it recovers to a certain extent.

关键词： biomechanics locomotion neurophysiology obstacle negotiation spinal cord injury

An SPH Framework for Earthquake-Induced Liquefaction Hazard Assessment of geotechnical Structures

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 251-277页

作者： Sourabh Mhaski g.V.Ramana Department of Civil Engineering Indian Institute of Technology DelhiNew Delhi110016India

Earthquake-induced soil liquefaction poses significant risks to the stability of geotechnical structures *** understanding of the liquefaction triggering,and the post-failure large deformation behaviour is essential for designing resilient *** present study develops a Smoothed Particle Hydrodynamics(SPH)framework for earthquake-induced liquefaction hazard assessment of geotechnical *** coupled flowdeformation behaviour of soils subjected to cyclic loading is described using the PM4Sand model implemented in a three-phase,single-layer SPH framework.A staggered discretisation scheme based on the stress particle SPH approach is adopted to minimise numerical inaccuracies caused by zero-energy modes and tensile ***,non-reflecting boundary conditions for seismic analysis of semi-infinite soil domains using the SPH method are *** numerical framework is employed for the analysis of cyclic direct simple shear test,seismic analysis of a level ground site,and liquefaction-induced failure of the Lower San Fernando *** agreement for liquefaction triggering and post-failure behaviour demonstrates that the SPH framework can be utilised to assess the effect of seismic loading on field-scale geotechnical *** present study also serves as the basis for future advancements of the SPH method for applications related to earthquake geotechnical engineering.

关键词： Earthquake seismic liquefaction stress particle PM4Sand smoothed particle hydrodynamics(SPH)

Stump appendicitis is a rare delayed complication of appendectomy:A case report

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World Journal of gastroenterology 2006年第33期12卷 5401-5403页

作者： Mehmet Uludag Adnan isgor Muzaffer Basak Second Department of general Surgery Sisli Etfal Training and Research Hospital Sisli Istanbul Turkey golden Horn University Aksaray Istanbul Turkey Department of Radiology Sisli Etfal Training and Research Hospital Sisli Istanbul Turkey

Stump appendicitis is an acute inflammation of the residual appendix and one of the rare complications after appendectomy. Paying attention to the possibility of stump appendicitis in patients with right lower abdominal pain after appendectomy can prevent the delay of diagnosis and treatment. In patients with stump appendicitis, CT scan not only assists in making an accurate preoperative diagnosis but also excludes other etiologies. We report a 47-year old man with preoperatively diagnosed stump appendicitis by CT, who underwent an open appendectomy 20 years ago.

关键词： Stump appendicitis Delayed complication Preoperative diagnosis Computed tomography Incomplete appendectomy

Removal of heavy metals from aqueous solution by sawdust adsorption

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Journal of Environmental Sciences 2007年第2期19卷 160-166页

作者： BULUT yasemin TEZ Zeki Faculty of Arts and Sciences Department of Chemistry University of Dicle21280 DiyarbakirTurkey. Faculty of Techniqual Education Department of Textile Marmara UniversityGztepeIstanbulTurkey

The adsorption of lead, cadmium and nicel from aqueous solution by sawdust of walnut was investigated. The effect of contact time, initial metal ion concentration and temperature on metal ions removal has been studied. The equilibrium time was found to be of the order of 60 min. Kinetics fit pseudo first-order, second-order and intraparticle diffusion models, hence adsorption rate constants were calculated. The adsorption data of metal ions at temperatures of 25, 45 and 60~C have been described by the Freundlich and Langmuir isotherm models. The thermodynamic parameters such as energy, entropy and enthalpy changes for the adsorption of heavy metal ions have also been computed and discussed. Ion exchange is probably one of the major adsorption mechanisms for binding divalent metal ions to the walnut sawdust. The selectivity order of the adsorbent is Pb（I1）~Cd（II）〉Ni（I1）. From these results, it can be concluded that the sawdust of walnut could be a good adsorbent for the metal ions from aqueous solutions.

关键词： adsorption heavy metals sawdust kinetic thermodynamic parameters

Bioelectronic medicine in modulation of cortical spreading depolarization and beyond

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Neural Regeneration Research 2025年第2期20卷 481-482页

作者： Khaled Alok Timothy g.White Chunyan Li Department of Neurosurgery Donald and Barbara Zucker School of Medicine at Hofstra/NorthwellHempsteadNYUSA Translational Brain Research Laboratory The Feinstein Institutes for Medical ResearchManhassetNYUSA

Bioelectronic interventions,specifically trigeminal nerve st imulat ion(TNS),have attracted considerable attention in conditions where cortical spreading depolarizations(CSDs)accompanied by compromised cerebral perfusion may exacerbate neurological *** pharmacological interventions have demonstrated initial potential in addressing CSDs,a standardized treatment approach has not yet been *** objective of this perspective is to explore emerging bioelectronic methodologies for addressing CSDs,particularly emphasizing TNS,and to underscore TNS’s capacity to enhance neurovascular coupling and cerebral perfusion.

关键词： cerebral perfusion electronic

Impact of Zika virus non-structural protein mutations on hippocampal damage

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Neural Regeneration Research 2025年第8期20卷 2307-2308页

作者： Larissa M.g.Cassiano Roney S.Coimbra Neurogenômica/Imunopatologia Instituto RenéRachouFiocruzBelo HorizonteBrazil Departamento de Bioquímica e Imunologia Instituto de Ciências BiológicasUniversidade Federal de Minas GeraisBelo HorizonteBrazil

The Zika virus(ZIKV),a member of the Flaviviridae family,attracted worldwide attention for its connection to severe neurological effects,notably microcephaly in newborns,first reported during the 2015 epidemic in ***,its impact goes beyond fetal and neonatal abnormalities,also affecting the central nervous system(CNS)in both children and adults,leading to enduring cognitive and behavioral impairments.

关键词： damage fetal neonatal

Enzymatic Synthesis of Polycaprolactone:Effect of Immobilization Mechanism of CALB on Polycaprolactone Synthesis

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Journal of Renewable Materials 2018年第6期6卷 619-629页

作者： yasemin Kaptan.M.Sc Yüksel Avcıbaşı-güvenilir Istanbul Technical University Department of Chemical EngineeringIstanbul Technical University34469Maslak-Istanbul

Surface-modified rice husk ash was used as an inorganic support material for immobilization of Candida antarctica lipase B.(3-aminopropyl)trimethoxysilane was used for surface *** of CALB was performed via both physical adsorption and *** synthesis was carried out by using these immobilized enzymes,free enzyme and Novozyme 435®.Molecular weight distribution of polymer samples was obtained by gel permeation chromatography(gPC)and chain structures of the polymer samples were observed by hydrogen nuclear magnetic resonance(1H-NMR).The highest monomer conversion is generally obtained by using cross-linked enzyme,around 90%.PDI values for all polymer samples were approximately 1.5 which can be considered as *** general cross-linked enzymes were better than physically adsorbed enzymes in terms of average molecular *** can be concluded that PCL can be synthesized with these immobilized enzymes with high molecular weight and low PDI values.

关键词： Candida antarctica lipase B cross-linking physical adsorption Polycaprolactone rice husk ash

From chip-in-a-lab to lab-on-a-chip:a portable Coulter counter using a modular platform

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Microsystems & Nanoengineering 2018年第1期4卷 57-64页

作者： Stefan Dekker Pelin Kubra isgor Tobias Feijten Loes I.Segerink Mathieu Odijk BIOS Lab on Chip group MESA+Institute for NanotechnologyUniversity of Twente7500 AE EnschedeNetherlands

The field of microfluidics has been struggling to obtain widespread market *** order to overcome this struggle,a standardized and modular platform is introduced and *** providing easy-to-fabricate modular building blocks which are compatible with mass manufacturing,we decrease the gap from *** standardized blocks are used in combination with an application-specific fluidic circuit *** this board,electrical and fluidic connections are demonstrated by implementing an alternating current Coulter *** multipurpose building block is reusable in many *** this study,it identifies and counts 6 and 11μm *** system is kept in a credit card-sized footprint,as a result of in-house-developed electronics and standardized building *** believe that this easy-to-fabricate,credit card-sized,modular,and standardized prototype brings us closer to clinical and veterinary applications,because it provides an essential stepping stone to fully integrated point-of-care devices.

关键词： sized portable closer