检索结果-南通市图书馆

Development of otology specific outcome measure:Ear Outcome Survey-16 (EOS-16)

Journal of Otology 2021年第3期16卷 150-157页

作者： juha t.laakso juha Silvola timo Hirvonen Samuli Suutarla Ilkka Kivekas Riitta Saarinen Lotta Haavisto Jaakko Laitakari Antti A.Aarnisalo Aarno Dietz Jussi Jero Maija Hytonen Saku t.Sink Department of Otorhinolaryngology-Head and Neck Surgery Head and Neck CenterHelsinki University Hospital and University of HelsinkiHelsinkiFinland Department of Ear Noseand Throat-Division of SurgeryAkershus University HospitalLørenskogNorway Department of Otorhinolaryngology Kymenlaakso Central HospitalKotkaFinland Department of Otorhinolaryngology-Head and Neck Surgery Tampere University Hospital and Tampere UniversityTampereFinland Department of Otorhinolaryngology-Head and Neck Surgery Turku University Hospital and University of TurkuTurkuFinland Department of Otorhinolaryngology-Head and Neck Surgery Oulu University Hospital and PEDEGO Research UnitUniversity of Oulu and Medical Research Center OuluFinland Department of Otorhinolaryngology-Head and Neck Surgery Kuopio University Hospital and University of KuopioKuopioFinland

Purpose An important outcome measure of patient care is the impact on the patient’s health-related quality of life(HRQoL).Current ear-specific HRQoL instruments are designed for one diagnosis and emphasize different subdivisions such as symptoms,hearing problems,psychosocial impact,and the need for *** optimal length of the recall period has not been *** these reasons,a new survey is needed that would cover most chronic ear *** A preliminary 24-item survey(EOS-24)was *** adult patients(included n=186)with one of seven different chronic otologic conditions from all university hospitals in Finland were recruited to respond to EOS-24 and the 15D general HRQoL *** recruiting otologists evaluated the severity of the disease and the disability caused by it.A control group was *** on the patients’responses in different diagnosis groups,the items were reduced according to pre-defined *** resulting survey was validated using a thorough statistical *** the relevance and necessity of the original 24 items were thoroughly investigated,leading to the exclusion of 8 items and the modification of *** remaining 16 items were well-balanced between subdivisions and were useful in all seven diagnosis groups,thus constituting the final instrument,*** most suitable recall period was three *** EOS-16 has been created according to the HRQoL survey guidelines with a versatile nationwide patient *** survey has been validated and can be used for a wide range of chronic ear diseases as a HRQoL instrument.

关键词： Otology Chronic ear diseases HRQoL Health-related quality of life PROM

来源：

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

Primary and revision myringoplasty in children: Long-term outcome and analysis of the factors influencing the results

引用

Journal of Otology 2024年第2期19卷 85-90页

作者： juha t.Silvola Saku t.Sinkkonen Department of Otorhinolaryngology Akershus University Hospitaland Campus AhusUniversity of OsloNorway Department of Otorhinolaryngology Head and Neck SurgeryHead and Neck CenterHelsinki University Hospital and University of HelsinkiHelsinkiFinland

Objective:Assess the long-term outcome of pediatric ***:tympanoplasty type I,myringoplasty,was performed on 85 children(91 consecutive operations,74 primary and 17 revisions)under 16 years of *** perforations were sequela either to acute or chronic inflammatory middle ear *** grafting technique was employed with temporalis *** was performed earlier on all but five *** preoperative observation period exceeded one year for all *** mean follow-up was 5.4(SD 3.6)***:the long-term graft take rate was 84%for primary myringoplasty,and 53%for revision *** re-perforations were associated with postoperative discharge,subtotal or total perforation and revision *** the cohort,sixty ears(66%)were completely healthy(intact tympanic membrane in normal position without adhesions and with good mobility)after *** healing took place in 37%after *** preoperative ventilation tube treatment did not affect the outcome and there were no differences between age *** sonotubometry or Valsalva test results did not correlate with *** ears needed a ventilation tube during the follow-up due to poor *** mean pure tone thresholds improved significantly after ***:Myringoplasty in children is a reliable procedure without age *** year of preoperative observation excludes most unstable ears,and high tendency of spontaneous healing after re-perforation suggests the need for a lengthy follow-up before revision surgery.

关键词： Myringoplasty Middle ear Surgery Pediatric

来源：

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

Estimation of drag forces caused by natural woody vegetation of different scales

引用

Journal of Hydrodynamics 2014年第4期26卷 608-623页

作者： JALONEN Johanna JRVEL juha Department of Civil and Environmental Engineering Aalto University

to reliably estimate water levels and velocities in vegetated rivers and floodplains, flow resistance models based on physical plant properties are advantageous. the purpose of this study is （1） to assess the suitable parameterization of woody riparian vegetation in estimating the drag forces, （2） to address the effect of plant scale on the drag estimates and reconfiguration, and （3） to evaluate the applicability of three recently developed flow resistance models. Experiments on four tree species in a towing tank together with detailed characterization of tree properties were carried out to establish a novel dataset. Despite the variability in the tree height （0.9 m-3.4 m）, the stem, leaf and total areas proved to be suitable characteristic dimensions for estimating the flow resistance at different scales. Evaluations with independent data revealed that the tested models produced reasonable results. the performance of the models was controlled by the parameter values used rather than the model structure or the plant scale.

关键词： drag force flow resistance woody vegetation modelling

来源：

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

the comparison of design airflow rates with dynamic and steady-state displacement models in varied dynamic conditions

引用

Building Simulation 2021年第4期14卷 1201-1219页

作者： Natalia Lastovets Risto Kosonen juha Jokisalo Department of Mechanical Engineering Aalto UniversityEspooFinland College of Urban Construction Nanjing Tech UniversityNanjingChina

A temperature-based method is usually applied in displacement ventilation (DV) design when overheating is the primary indoor climate concern. Different steady-state models have been developed and implemented to calculate airflow rate in rooms with DV. However, in practical applications, the performance of DV depends on potentially dynamic parameters, such as strength, type and location of heat gains and changing heat gain schedule. In addition, thermal mass affects dynamically changing room air temperature. the selected steady-state and dynamic models were validated with the experimental results of a lecture room and an orchestra rehearsal room. Among the presented models, dynamic DV model demonstrated a capability to take into account the combination of dynamic parameters in typical applications of DV. the design airflow rate is calculated for the case studies of dynamic DV design in the modelled lecture room in both dynamic and steady-state conditions. In dynamic conditions of heavy construction in 2–4 hours occupancy periods, the actual airflow rate required could be 50% lower than the airflow rate calculated with the steady-state models. the difference between steady-state and dynamic multi-nodal model is most significant with heavyweight construction and short occupancy period (17%–28%). In cases with light construction, the dynamic DV model provides roughly the same airflow rates for four-hour occupancy period than the Mund’s model calculates. the dynamic model can significantly decrease the design airflow rate of DV, which can result in a reduction of investment costs and electrical consumption of fans.

关键词： displacement ventilation design airflow rate temperature gradient dynamic model simplified building energy models

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Geometrically modeling 2D scattered points: a review of the potential for methodologically improving mobile laser scanning in data processing

引用

International Journal of Digital Earth 2014年第6期7卷 432-449页

作者： Yi Lin juha Hyyppa Department of Remote Sensing and Photogrammetry Finnish Geodetic Institute MasalaFinland

As a state-of-the-art mapping technology,mobile laser scanning(MLS)is increasingly applied to fields such as digital presentations of city ***,its application has recently met a bottleneck in data *** has been found that conventional methods for geometrically modeling 3D scattered points are inadequate when dealing with large volumes of MLS *** fact,this is a challenge that has already been noted in the MLS-relevant fields,*** sensing,robot perception,and pattern recognition.A variety of algorithms under the schematic frame of analysis,modeling and synthesis(AMS)have been developed in these *** AMS paradigm is to first extract the implicit geometric primitives within each scan profile by geometrically modeling its 2D scattered points(GM2P).the resultant 2D geometric primitives are then integrated to restore the real 3D geometrical *** this process,GM2P is a kernel procedure whereby a review of the GM2P algorithms is assumed to be of significance for developing new efficient algorithms for geometrically modeling 3D scattered *** idea is supported by MLS sampling often being executed via parallel scan ***,the results of the literature review indicate an avenue for methodologically improving MLS in data processing.

关键词： MLS geometrically modeling scattered points GM2P AMS scan profile

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Impact of Pollutant Concentration and Particle Deposition on the Radiative Flow of Casson-Micropolar Fluid between Parallel Plates

引用

Computer Modeling in Engineering & Sciences 2025年第1期142卷 665-690页

作者： Ghaliah Alhamzi Badr Saad t.Alkahtani Ravi Shanker Dubey Vinutha Kalleshachar Neelima Nizampatnam Department of Mathematics and Statistics College of ScienceImam Mohammad Ibn Saud Islamic University(IMSIU)Riyadh11564Saudi Arabia Department of Mathematics College of ScienceKing Saud UniversityRiyadh11989Saudi Arabia Department of Mathematics Amity School of Applied SciencesAmity University RajasthanJaipur302002RajasthanIndia Department of Studies in Mathematics Davangere UniversityDavangere577002India Department of Electronics and Communication Engineering Amrita School of EngineeringAmrita Vishwa VidyapeethamBengaluru560035India

Assessing the behaviour and concentration of waste pollutants deposited between two parallel plates is essential for effective environmental *** the effectiveness of treatment methods in reducing pollution scales is made easier by analysing waste discharge *** waste discharge concentration analysis is useful for assessing how effectively wastewater treatment techniques reduce pollution *** study aims to explore the Casson micropolar fluid flow through two parallel plates with the influence of pollutant concentration and thermophoretic particle *** explore the mass and heat transport features,thermophoretic particle deposition and thermal radiation are *** governing equations are transformed into ordinary differential equations with the help of suitable similarity *** Runge-Kutta-Fehlberg’s fourthfifth order technique and shooting procedure are used to solve the reduced set of equations and boundary *** integration of a neural network model based on the Levenberg-Marquardt algorithm serves to improve the accuracy of predictions and optimize the analysis of *** outcomes are displayed to analyze the characteristics of the relevant dimensionless parameters in the current *** reveal that concentration upsurges as the micropolar parameter *** concentration reduces with an upsurge in the thermophoretic *** upsurge in the external pollutant source variation and the local pollutant external source parameters enhances mass *** surface drag force declines for improved values of porosity and micropolar parameters.

关键词： Micropolar fluid thermal radiation porous medium thermophoretic particle deposition waste discharge concentration

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Compression curve analysis and compressive strength measurement of brittle granule beds in lieu of individual granule measurements

引用

Particuology 2016年第6期14卷 60-68页

作者： Matti Jairvelainen Aaretti Kaleva Annikka Kaitajairvi ,Jarmo laakso Ulla Kanerva Erkki Levanen Department of Materials Science Tampere University of Technology PO Box 589 FIN-33101 Tampere Finland Vtt technical Research Centre of Finland Sinitaival 6 PO Box 1300 FI33101 Tampere Finland

Powders in granulated form are used in various processes to facilitate convenient usage. the durability of the formed granules is a crucial parameter, typically evaluated by the compressive strength of the gran- ules. However, especially for granules with a diameter in the order of tens of microns, statistically relevant testing of individual granules is not a feasible alternative, and in such cases uniaxial bed compression is required. there has not been consensus on whether uniaxial compression of a granule bed can be used to study the fracture of micron size or brittle granules. In our case study of a bed of sintered kaolinite granules with diameters under 100 μm, we show how the compressive strength of individual granules can be obtained from the compressive measurement of the entire bed by plotting the relative density versus the logarithmic pressure scale. We compressed the kaolinite powder with different loads; microscopy confirmed that below the ana- lyzed strength the granules are intact, though the granules start to fracture in the curved region on the compression curve. We found that angle-fitting can be used to locate the average compressive strength on the compression curve and to follow the evolution of strength with sintering temperature. the experi- ments in unison demonstrate that compression curve analysis is applicable for strength analysis of brittle granules.

关键词： GranuleMechanical characterization Pressing Compressive strength Sintering Compression curves

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Variation in the timing of river entry of Atlantic salmon (Salmo salar L.) in the Baltic

引用

Current Zoology 2009年第5期55卷 342-349页

作者： Anna KUPARINEN juha MERIL Department of Biological and Environmental Sciences

the timing of river entry in the Atlantic salmon is known to depend on genetic, demographic and environmental factors, but little is known about the relative magnitude of among population and among year variation and covariation in this respect in natural state Atlantic salmon rives. to investigate this, variability in the timing of river entry in three historical Finnish Atlantic salmon populations were analyzed using salmon trap data collected during 1870- 1902. the analyses reveled that 1 ） the timing of river entry differed substantially and consistently among the rivers, and that 2） variation among the rivers was much larger than variation among years. Annual variations were not explained by regional environmental conditions, whereas in one river the timing of the local flood peak was a significant predictor of the timing of river entry. Differences in the timing of salmon entry to geographically closely situated rivers suggests that a regionally fixed opening date for coastal fisheries might not be the best management strategy as it may lead to uneven exploitation of salmon populations from different rivers [ Current Zoology 55 （5）： 342 - 349, 2009] .

关键词： Atlantic salmon Coastal fisheries Fisheries management Freshwater entry Migration River entry

来源：

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

Fluid dynamic modeling of a free piston engine with labyrinth seals

引用

Journal of thermal Science 2010年第2期19卷 141-147页

作者： Jaakko Larjola juha Honkatukia Petri Sallinen Jari Backman Lappeenranta University of technology P.O.Box 2053851 Lappeenranta

Preliminary design and simulation of a free piston engine suitable for small-scale energy production in distributed energy systems is presented in this *** properties,particularly the properties of gas seals of the engine are simulated using a simulation program developed for this case,and the results are utilized in preliminary main design parameter *** engine simulation program was developed by combining and modifying the source codes of the simulation and calculation programs obtained from Helsinki University of technology,tampere University of technology,and Lappeenranta University of *** of the contact-free labyrinth seal used in the piston,the efficiency of the motor is lower than the efficiency of a conventional motor with oil lubricated piston *** the other hand,the lack of bearing losses,and the lack of losses associated with a crankshaft system and a gearbox,as well as the lack of lubrication oil expenses,compensates this *** a net result,this new motor would perform slightly better than the conventional *** completely oil-free,it is very environmentally friendly,and its exhaust gases are completely free of oil residuals which are causing problems in normal gas motors.

关键词： free piston engine distributed energy systems simulation labyrinth seal

来源：

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

transport mechanism in chemically reactive hybrid nanofluid flow containing gyrotactic micro-organisms over a curved oscillatory surface

引用

Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 177-192页

作者： M.NAVEED M.IMRAN t.ASGHAR Z.ABBAS Department of Mathematics Division of Science and TechnologyUniversity of Education Department of Mathematics The Islamia University of Bahawalpur

this paper examines the transport analysis, including both heat transfer and mass transfer, in hybrid nanofluid flow containing gyrotactic microorganisms towards a curved oscillatory surface. the influence of magnetic fields is also inspected in terms of their physical characteristics. to depict the phenomena of transport, modified versions of both Fick's and Fourier's laws are used. Additionally, the characteristics of both heterogeneous and homogeneous chemical reactions are also incorporated. Utilizing a curvilinear coordinate system, the flow problem is formulated as partial differential equations(PDEs)for momentum, concentration, microorganism field, and energy. An analytical solution to the obtained flow equations is achieved utilizing the homotopy analysis method(HAM).the effects of significant flow parameters on the pressure and microorganism fields, velocity, oscillation velocity, concentration, and temperature distributions are shown via graphs. Furthermore, the variations in skin friction, mass transfer rate, heat transfer rate, and local motile number due to different involved parameters are presented in tables and are analyzed in detail. Graphical results indicate that the curves of velocity and temperature fields are enhanced as the values of the solid volume fraction variables *** is also verified that the concentration rate field decreases as the values of the homogeneous reaction strength parameter and the radius of curvature parameter increase, and it increases with the Schmidt number and the heterogeneous reaction strength *** outcomes show a favorable response of the motile number to advanced values of the Peclet number, the Schmidt number, the microorganism difference parameter, and the bio-convective Lewis number.

关键词： Peclet number

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：