Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering最新文献_第2页

Influence of Density on the Withdrawal Staple Strength from Hemp Shive Panels 密度对大麻刨花板抽出铆钉强度的影响

Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering Pub Date : 2023-12-21 DOI: 10.31926/but.fwiafe.2023.16.65.3.8

D. Hristodorova, V. Mihailov, V. Savov

{"title":"Influence of Density on the Withdrawal Staple Strength from Hemp Shive Panels","authors":"D. Hristodorova, V. Mihailov, V. Savov","doi":"10.31926/but.fwiafe.2023.16.65.3.8","DOIUrl":"https://doi.org/10.31926/but.fwiafe.2023.16.65.3.8","url":null,"abstract":"Particleboards are the main material used in the production of furniture and furnishings. The shortage of wood raw material and the everincreasing amount of particleboards produced suggest a search for alternative raw material sources for this panel type. On the other hand, significant quantities of agro-industrial lignocellulosic residues are available worldwide. Such a type of residue is hemp shives. Basic joints in furniture frames are stapled joints, as it should be said that density is the main characteristic of particleboards, and their other properties strongly correlate with it. The present research studies the influence of the density of panels from hemp shives on their staple withdrawal resistance. For this purpose, panels from hemp shives with melamine-formaldehyde (MF) resin as an adhesive and densities from 600 kg.m-3 to 900 kg.m-3 were produced in laboratory conditions. The density of the panels varied with a step of 100 kg.m-3. As a result of the research, it was found that the staple withdrawal resistance of hemp shives particleboards from the edge and side of the panels increases almost twice with the increase of their density. It was also found that, unlike industrial particleboards, edge staple withdrawal resistance is higher in hemp shive panels than side staple withdrawal resistance. Laboratory-produced panels from hemp shives have a higher staple withdrawal resistance at similar densities than industrial particleboards. However, this is at the expense of using expensive MF resin and the significantly extended press factor. The main novelty of the research is the establishment of the effect of the density of hemp shive particleboards on their staple withdrawal resistance, as well as the demonstration of the possibility of producing panels from an alternative lignocellulosic raw material with a better staple withdrawal resistance than that of industrial particleboards manufactured from wood raw material.","PeriodicalId":505399,"journal":{"name":"Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering","volume":"13 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139167793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Variation in Moisture Content and Density Whitin and Among Freshly Felled Sclerocarya birrea and Anogeissus leiocarpus 新鲜砍伐的桦木和雷公藤的含水量和密度的变化

Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering Pub Date : 2023-12-21 DOI: 10.31926/but.fwiafe.2023.16.65.3.16

Fath Alrhman Awad Ahmed Younis, Róbert Németh, Fath Alrhman, Awad Ahmed, Younis

引用次数: 0

Effect of Variable Growth Conditions on Selected Anatomical Properties of Hungarian Turkey Oak Wood 不同生长条件对匈牙利火鸡橡木部分解剖特性的影响

Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering Pub Date : 2023-12-21 DOI: 10.31926/but.fwiafe.2023.16.65.3.6

J.K. Govina, R. Németh, M. Bak, M. Bader

{"title":"Effect of Variable Growth Conditions on Selected Anatomical Properties of Hungarian Turkey Oak Wood","authors":"J.K. Govina, R. Németh, M. Bak, M. Bader","doi":"10.31926/but.fwiafe.2023.16.65.3.6","DOIUrl":"https://doi.org/10.31926/but.fwiafe.2023.16.65.3.6","url":null,"abstract":"Quercus cerris (Turkey oak) has been categorized as a drought-tolerant species because it can survive with rainfall below 400 mm/year, and it usually develops deep and penetrating taproots. This characteristic suggests that Turkey oak is a survival candidate species for the future environment with the predicted climate scenarios in Hungary. Potentially, Turkey oak could support a sustainable supply of timber to the Hungarian wood industry in the future, as the aesthetic value is similar to that of noble oaks. The objectives of the study are to determine 1; the selected micro-level wood properties (wood tissue characteristics) and 2; the selected macrolevel wood properties (tree-ring width, sapwood-heartwood ratio) for Turkey oak from two different sites. The heartwood portion for all trees constituted 67-82% of the cross-diameter. The growth-ring width decreased from pith to bark. The annual rings in the sapwood had a width value range of 1000 to 1600 μm; in heartwood 1600 to 2500 μm; in juvenile wood 2400 to 3300 μm. Soil quality and stand composition had a significant effect on growth-ring width. Fibre length ranged from 800.03 to 1305.59 m, whereas fibre-wall thickness varied between 11.73 and 18.51 μm, with soil quality and species composition having a highly significant influence. The earlywood parts of the growth rings had a vessel diameter range of 274.62-401.54 μm, whereas the latewood portion ranged from 46.50 to 190.08 μm. Overall, stand composition was a major source of variation in the properties studied.","PeriodicalId":505399,"journal":{"name":"Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering","volume":"13 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139167858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance of Wood Dowels and Same Size Metallic Connectors Used for Furniture Joints 用于家具连接的木榫和同尺寸金属连接件的性能

Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering Pub Date : 2023-12-21 DOI: 10.31926/but.fwiafe.2023.16.65.3.2

Seda Baş, Levente Dénes, Csilla Csiha, Seba Baș

{"title":"Performance of Wood Dowels and Same Size Metallic Connectors Used for Furniture Joints","authors":"Seda Baş, Levente Dénes, Csilla Csiha, Seba Baș","doi":"10.31926/but.fwiafe.2023.16.65.3.2","DOIUrl":"https://doi.org/10.31926/but.fwiafe.2023.16.65.3.2","url":null,"abstract":"For a circular and sustainable economy, the reuse of wood furniture parts has gathered increasing importance. Disassemblable joints and purposefully developed elements may support this reuse. Despite the relatively high number of structural connectors, newly developed fittings have appeared on the market, combining the advantages of the previous ones or introducing new solutions, like the Domino dowels and connectors developed to make strong hidden joints. In furniture manufacturing, both panel and frame elements are joined for load-bearing, semi-load-bearing, or non-load-bearing connections. Metallic Domino connectors have recently been developed and recommended by the manufacturer only as connecting elements, and not as supporting elements of furniture constructions. In daily practice, the general consideration exists that these metallic connectors are strong enough to perform well as load-bearing elements. The main goal of this research was to examine the strength of corner (L) and T joints made with upper wood dowels and metallic connectors, to compare their performance. For the experiments, same-sized wood dowels and metallic connectors were used. The tension and compression test results indicate that the type of joint (corner versus T) is a stronger influencing factor of performance than the type of jointing element (wood dowel vs. metallic connector). Domino dowels are manufactured in different sizes. Further research will focus on finding the wood dowel equivalent to a given metallic connector of different sizes.","PeriodicalId":505399,"journal":{"name":"Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering","volume":"10 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139167569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Process Conditions on Waterborne Wood Coating Performance Applied by Dipping 工艺条件对浸渍法水性木器涂料性能的影响

Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering Pub Date : 2023-12-21 DOI: 10.31926/but.fwiafe.2023.16.65.3.1

K. Atanasova, V. Savov

{"title":"Effect of Process Conditions on Waterborne Wood Coating Performance Applied by Dipping","authors":"K. Atanasova, V. Savov","doi":"10.31926/but.fwiafe.2023.16.65.3.1","DOIUrl":"https://doi.org/10.31926/but.fwiafe.2023.16.65.3.1","url":null,"abstract":"Bio-based commercial coating systems are still not widely used to protect wooden elements and constructions used outdoors. In some cases, this is due to insufficient information about the technology and conditions of the film formation process. The present research aims to determine the influence of the process conditions on the properties of a coating applied by dipping on spruce, beech, and beech plywood surfaces. A waterborne one component bio-based varnish system was used. The study researched the following parameters: the amount of varnish applied, varnish penetration into the wood, and roughness of the surfaces after coating and drying. The variables investigated were the dipping orientation to the grain direction in the wood specimens, the wood surface treatment before coating, and the dipping time. Polynomial regression models were derived. It was established that with a single dip for 5 seconds, surfaces with a good appearance were obtained, but the varnish amount exceeded the norms recommended by the manufacturer several times. When axially dipping spruce and beech specimens, the varnish amount was the least when the surfaces were sanded with P150 grit-sized sandpaper. For the plywood specimens, the treatment had no effect. In tangential dipping, the characteristics of the wood species determined the varnish amount and the roughness parameter values. The sanding process had a more significant influence than the sandpaper grit size. The penetration was affected by the wood species characteristics, the wood surface treatment before coating, and the dipping time. In axial dipping, the penetration was times greater than in tangential dipping.","PeriodicalId":505399,"journal":{"name":"Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering","volume":"58 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139167957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simulation-Based Performance Analysis of Impregnated Wood with Phase Change Material for Energy Efficient Timber Structures 基于仿真的节能木结构相变材料浸渍木材性能分析

Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering Pub Date : 2023-12-21 DOI: 10.31926/but.fwiafe.2023.16.65.3.7

J. Grzybek, Philipp Meffert, A. Petutschnigg, Thomas Schnabel

{"title":"Simulation-Based Performance Analysis of Impregnated Wood with Phase Change Material for Energy Efficient Timber Structures","authors":"J. Grzybek, Philipp Meffert, A. Petutschnigg, Thomas Schnabel","doi":"10.31926/but.fwiafe.2023.16.65.3.7","DOIUrl":"https://doi.org/10.31926/but.fwiafe.2023.16.65.3.7","url":null,"abstract":"Organic phase change materials (PCMs) offer a promising approach to improving the energy efficiency and sustainability of buildings. Impregnating wood with PCMs presents the opportunity for its application in building construction to reduce energy consumption for heating and cooling of indoor spaces. In this study, the process of solid wood impregnation with PCMs was conducted, along with the characterisation of their thermal properties. To define an optimal melting point and quantity to be incorporated into test cubes exposed outdoors for long term in Kuchl (Austria), a digital model was used to simulate beech and spruce that were impregnated with PCMs featuring two differing melting points. The results show that incorporating PCM into walls and floor can potentially reduce summer overheating by up to 48%. This effect is achieved using a building design that includes wood impregnated with PCM with a lower melting point of around 21°C. However, the building design and use of the employed PCMs do not reduce energy consumption for heating during winter. The results show that the performance is strongly dependent on the melting point of the PCM and its quantity in the building. These findings contribute to improving the design of the experimental test cube with impregnated wood and highlight the challenges.","PeriodicalId":505399,"journal":{"name":"Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering","volume":"13 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139166738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical Performance of Heat-Treated Norway Spruce (Picea abies) Wood 热处理挪威云杉（Picea abies）木材的机械性能

Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering Pub Date : 2023-12-20 DOI: 10.31926/but.fwiafe.2023.16.65.2.7

R. Hasanagić, L. Fathi, M. Sefidruh, M. Bahmani, M. Humar

{"title":"Mechanical Performance of Heat-Treated Norway Spruce (Picea abies) Wood","authors":"R. Hasanagić, L. Fathi, M. Sefidruh, M. Bahmani, M. Humar","doi":"10.31926/but.fwiafe.2023.16.65.2.7","DOIUrl":"https://doi.org/10.31926/but.fwiafe.2023.16.65.2.7","url":null,"abstract":"In this study, the mechanical characteristics of Norway spruce wood (Picea abies) from Bosnia and Herzegovina were investigated by thermal treatment at three different temperatures (specifically, 180, 190, and 210°C) and treatment durations (namely, 2, 3, and 4 hours). For this purpose, the maximum 4-point bending force, the modulus of elasticity in bending, the compression strength parallel to the grain, and the compression strength perpendicular to the grain in treated and untreated specimens were evaluated. Results indicated that the relationship between temperature and duration modification affects the mechanical properties of wood specimens. The results revealed that the relationship between temperature and duration modification influenced the mechanical properties of the wood samples. Specifically, in terms of compression strength, it was observed that the heat-treated specimens exhibited improved mechanical properties compared to the unmodified specimens. However, for the maximum 4-point bending force and modulus of elasticity, the results indicated a decrease in mechanical properties.","PeriodicalId":505399,"journal":{"name":"Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139168257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Material Resistance and Moisture Dynamics of Beech Wood (Fagus orientalis) 榉木（Fagus orientalis）的耐材性和湿度动力学

Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering Pub Date : 2023-12-20 DOI: 10.31926/but.fwiafe.2023.16.65.2.6

M.G. Daryaei, Z. Moradi, L. Fathi, R. Hasanagić, M. Humar, M. Bahnani

{"title":"Material Resistance and Moisture Dynamics of Beech Wood (Fagus orientalis)","authors":"M.G. Daryaei, Z. Moradi, L. Fathi, R. Hasanagić, M. Humar, M. Bahnani","doi":"10.31926/but.fwiafe.2023.16.65.2.6","DOIUrl":"https://doi.org/10.31926/but.fwiafe.2023.16.65.2.6","url":null,"abstract":"In this paper, the natural durability of commercial wood (beech wood) was studied by measuring its water exclusion efficacy and durability against fungi. This information was utilized in the Meyer−Veltrup model to calculate the resistance dose. The results showed that Fagus orientalis (Lipsky) heartwood and sapwood were less durable (DC 4−5). After one hour of immersion, the water uptake in F. orientalis sapwood was 19%, slightly more than that determined with F. orientalis heartwood (18.9%). Water immersion after 24 h was highest for F. orientalis sapwood (45.4%), followed by F. orientalis heartwood (40.9%). Up to 54.2% median MLF on F. orientalis heartwood and up to 61.1% median MLF on F. orientalis sapwood were attributed to the white fungus T. versicolor. In contrast, the lowest median MLF was caused by F. orientalis heartwood and sapwood by the white fungus H. fragiforme. 35.4% median MLF on F. orientalis was caused by terrestrial microcosms. Based on the resistance model, the first signs of fungal decay on F. orientalis heartwood and sapwood wood will develop after 312 and 294 days of favorable conditions, respectively.","PeriodicalId":505399,"journal":{"name":"Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering","volume":"26 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139168306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of Feed Expander 饲料膨化机的开发

Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering Pub Date : 2023-12-20 DOI: 10.31926/but.fwiafe.2023.16.65.2.8

E. Aliiev, V. Dudin, O. Kobets, M. Linko

{"title":"Development of Feed Expander","authors":"E. Aliiev, V. Dudin, O. Kobets, M. Linko","doi":"10.31926/but.fwiafe.2023.16.65.2.8","DOIUrl":"https://doi.org/10.31926/but.fwiafe.2023.16.65.2.8","url":null,"abstract":"The development's objective is to increase productivity and reduce energy consumption in the execution of the technological process of expanded feed preparation while ensuring the necessary quality and safety of the expandates. The rationale for the construction and technological scheme of the feed expander with an improved shaping nozzle has been provided. This nozzle differs in that it consists of a narrowed area of the cylinder, a concave cone, and a crown nut. When heated plasticized mass is moved into the narrowed area of the shaping nozzle, there is an increase in pressure, followed by a sharp decrease after it passes through. This is achieved by increasing the working volume due to the shape of the concave cone. As a result, the plasticized mass expands and exits through the crown nut, forming expandates. Through numerical modelling, the dynamics and distribution of feed mixture components in the cavity between the cylinder of the shaping nozzle and the cone have been determined based on the force of pressure and the force of contact interaction between feed components. This dependence on the radius of narrowing of the cylinder of the shaping nozzle, the radius of the concave cone, and the distance between the cone and the cylinder have been established. Regression equations for the density of the plasticized feed mixture components at the outlet of the shaping nozzle and the maximum pressure required to extrude the plasticized feed components through the shaping nozzle along their movement direction from the specified research factors have been derived. As a result of experimental studies of the compact feed expander, dependencies of the changes in expander productivity, power consumption, the specific energy consumption of the expansion process, and the density of obtained expatriates have been established to the moisture content of the compound feed, the gap between the cone and the nut, and the screw rotation speed.","PeriodicalId":505399,"journal":{"name":"Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering","volume":"57 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139169878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Forest Management in Ukraine Under War Conditions 战争条件下的乌克兰森林管理

Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering Pub Date : 2023-12-20 DOI: 10.31926/but.fwiafe.2023.16.65.2.4

Y. Volkovska, I. Dubovich, M. Vyniarska, N.M. Petretchi

{"title":"Forest Management in Ukraine Under War Conditions","authors":"Y. Volkovska, I. Dubovich, M. Vyniarska, N.M. Petretchi","doi":"10.31926/but.fwiafe.2023.16.65.2.4","DOIUrl":"https://doi.org/10.31926/but.fwiafe.2023.16.65.2.4","url":null,"abstract":"Attention is drawn to scientifically based theoretical and practical approaches to the implementation of the concept of sustainable forest management and, accordingly, to ensuring the principles of sustainable forestry aimed at the adequate protection, use, and regeneration of forest resources in Ukraine during Russia's war against Ukraine. The main socio-economic and ecological aspects that influence the implementation of the concept of sustainable forest management at the national and regional level in the current conditions of Russia's military aggression against Ukraine are considered. The changes in the forest sector in the conditions of war are reflected, which must be considered from the point of view of understanding the principles of sustainable development, sustainable forestry, and the concept of sustainable forest management. It is proposed to develop and implement a theoretical, methodological, and practical approach to the implementation of the concept of sustainable forest management in Ukraine which would take into account the regional differences regarding the organisation and development of forestry in Ukraine.","PeriodicalId":505399,"journal":{"name":"Bulletin of the Transilvania University of Brasov. Series II: Forestry • Wood Industry • Agricultural Food Engineering","volume":"156 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139170551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0