Klüppel, André

[["dc.bibliographiccitation.firstpage","46"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","International wood products journal"],["dc.bibliographiccitation.lastpage","53"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Klüppel, A."],["dc.date.accessioned","2020-12-10T18:15:31Z"],["dc.date.available","2020-12-10T18:15:31Z"],["dc.date.issued","2016"],["dc.identifier.doi","10.1080/20426445.2016.1142136"],["dc.identifier.eissn","2042-6453"],["dc.identifier.issn","2042-6445"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74867"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Instrumented macrohardness testing of wood"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1029"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","European Journal of Wood and Wood Products"],["dc.bibliographiccitation.lastpage","1035"],["dc.bibliographiccitation.volume","76"],["dc.contributor.author","Klüppel, André"],["dc.contributor.author","Mai, Carsten"],["dc.date.accessioned","2020-12-10T14:08:19Z"],["dc.date.available","2020-12-10T14:08:19Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1007/s00107-017-1268-6"],["dc.identifier.eissn","1436-736X"],["dc.identifier.issn","0018-3768"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70423"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Effect of seawater wetting on the weathering of wood"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","493"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Holzforschung"],["dc.bibliographiccitation.lastpage","496"],["dc.bibliographiccitation.volume","66"],["dc.contributor.author","Klüppel, André"],["dc.contributor.author","Mai, Carsten"],["dc.date.accessioned","2014-02-19T14:18:01Z"],["dc.date.accessioned","2021-10-27T13:13:25Z"],["dc.date.available","2014-02-19T14:18:01Z"],["dc.date.available","2021-10-27T13:13:25Z"],["dc.date.issued","2012"],["dc.description.abstract","Scots pine micro-veneers were subjected to hydrolysis with sulphuric acid or delignifi cation with acidic sodium chlorite and a combination of both treatments. The tensile strength of untreated and treated veneers was determined at fi nite span (f-strength) and zero span (z-strength) under both dry (20 ° C, 65 % relative humidity) and water-saturated conditions. Acidic hydrolysis resulted in signifi cant strength losses in both testing modes and both moisture conditions, with the greatest strength reduction found for f-strength tested dry. After delignification, only f-strength under wet conditions was substantially reduced; dry f-strength and both dry and wet z-strength hardly changed. A combined treatment of prehydrolysis and delignifi cation resulted in disintegration of the veneers, which made strength determination impossible. It was concluded that, in addition to cellulose, the hemicelluloses determine the f-strength under dry conditions, while lignin confers wet strength but appears not to contribute to interfi bre adhesion and f-strength under dry conditions."],["dc.identifier.doi","10.1515/hf.2011.173"],["dc.identifier.fs","590875"],["dc.identifier.isi","000304467600011"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/9928"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/91776"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Walter De Gruyter & Co"],["dc.relation.issn","1437-434X"],["dc.relation.issn","0018-3830"],["dc.relation.orgunit","Fakultät für Forstwissenschaften und Waldökologie"],["dc.rights","Goescholar"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject","dry strength; fi nite span; microtensile testing; micro-veneers; wet strength; zero span."],["dc.title","Effect of lignin and hemicelluloses on the tensile strength of micro-veneers determined at finite span and zero span"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","41"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","International wood products journal"],["dc.bibliographiccitation.lastpage","44"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Klüppel, A."],["dc.date.accessioned","2020-12-10T18:15:31Z"],["dc.date.available","2020-12-10T18:15:31Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1080/20426445.2016.1268358"],["dc.identifier.eissn","2042-6453"],["dc.identifier.issn","2042-6445"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74870"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Hardness and indentation modulus of resin-treated wood"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.journal","Wood Material Science and Engineering"],["dc.bibliographiccitation.lastpage","9"],["dc.contributor.author","Pham Van, Tien"],["dc.contributor.author","Schöpper, Christian"],["dc.contributor.author","Klüppel, André"],["dc.contributor.author","Mai, Carsten"],["dc.date.accessioned","2020-04-03T13:05:46Z"],["dc.date.available","2020-04-03T13:05:46Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1080/17480272.2019.1705906"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/63611"],["dc.relation.issn","1748-0272"],["dc.relation.issn","1748-0280"],["dc.title","Effect of wood and panel density on the properties of lightweight strand boards"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","643"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Wood Science and Technology"],["dc.bibliographiccitation.lastpage","658"],["dc.bibliographiccitation.volume","47"],["dc.contributor.author","Klueppel, Andre"],["dc.contributor.author","Mai, Carsten"],["dc.date.accessioned","2018-11-07T09:25:28Z"],["dc.date.available","2018-11-07T09:25:28Z"],["dc.date.issued","2013"],["dc.description.abstract","Scots pine (Pinus sylvestris L.) sapwood was impregnated with aqueous solutions of phenol formaldehyde and methylated melamine formaldehyde resins and subsequently cured in an oven. One set of specimens was cured in plastic bags to avoid drying (wet curing) while another set of samples was heated and water was allowed to freely evaporate (dry curing). Macroscopic resin distribution was investigated using X-ray densitometry and infrared spectroscopy (FTIR-ATR). During dry curing, the resins migrated to the wood surface resulting in a gradient. Wet curing resulted in even distribution of the resins because it was immobilized due to condensation and precipitation in the wood. Neither densitometry nor FTIR-ATR was found to be generally applicable for investigating resin distribution in modified wood. Wet curing resulted in low cell wall bulking as compared to dry curing, probably because resin precipitated before drying. Storing impregnated wood prior to curing under non-drying conditions (\"diffusion phase\") also reduced cell wall penetration and bulking."],["dc.description.sponsorship","Fachagentur Nachwachsende Rohstoffe (FNR) [22004407]"],["dc.identifier.doi","10.1007/s00226-013-0530-2"],["dc.identifier.fs","601057"],["dc.identifier.isi","000318292900015"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10985"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/30072"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0043-7719"],["dc.rights.access","openAccess"],["dc.title","The influence of curing conditions on the chemical distribution in wood modified with thermosetting resins"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","8"],["dc.bibliographiccitation.journal","International Biodeterioration & Biodegradation"],["dc.bibliographiccitation.lastpage","14"],["dc.bibliographiccitation.volume","104"],["dc.contributor.author","Klueppel, Andre"],["dc.contributor.author","Cragg, Simon M."],["dc.contributor.author","Militz, Holger"],["dc.contributor.author","Mai, Carsten"],["dc.date.accessioned","2018-11-07T09:50:58Z"],["dc.date.available","2018-11-07T09:50:58Z"],["dc.date.issued","2015"],["dc.description.abstract","The resistance of differently modified wood to the common shipworm, Teredo navalis, and the wood boring crustacean, Limnoria quadripunctata, was assessed in a field trial and by means of a short term laboratory assay, respectively. Scots pine (Pinus sylvestris) sapwood was treated with TEOS (tetra-ethoxy-ortho-silane) and different thermosetting resins, namely phenol formaldehyde (PF) and methylated melamine formaldehyde (MMF). Additionally, acetylated and untreated Radiata pine (Pinus radiata) was included. In the field trial according to EN 275 in the Baltic Sea over a period of six years the specimens were exclusively attacked by T. navalis. For the laboratory assay, matchstick-sized samples cut from spare panels prepared for the field trial were subjected to individuals of L. quadripunctata; faecal pellet production served as a measure of feeding rate. Treatments that prevented shipworm attack in the field also reduced feeding of L quadripunctata in the laboratory assay: efficacy of resin treatments was enhanced by parameters that increase the amount of resin in the cell wall (i.e. high WPG and dry curing conditions); acetylation resulted in high resistance; and TEOS treatment was not effective. The results suggest that modification on cell wall level is required to impart marine borer resistance. (c) 2015 Elsevier Ltd. All rights reserved."],["dc.identifier.doi","10.1016/j.ibiod.2015.05.013"],["dc.identifier.isi","000362308400002"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/35816"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Sci Ltd"],["dc.relation.issn","1879-0208"],["dc.relation.issn","0964-8305"],["dc.title","Resistance of modified wood to marine borers"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Scientific Reports"],["dc.bibliographiccitation.volume","10"],["dc.contributor.author","Altgen, Michael"],["dc.contributor.author","Awais, Muhammad"],["dc.contributor.author","Altgen, Daniela"],["dc.contributor.author","Klüppel, André"],["dc.contributor.author","Mäkelä, Mikko"],["dc.contributor.author","Rautkari, Lauri"],["dc.date.accessioned","2021-04-14T08:27:11Z"],["dc.date.available","2021-04-14T08:27:11Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1038/s41598-020-60418-3"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/82196"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","2045-2322"],["dc.title","Distribution and curing reactions of melamine formaldehyde resin in cells of impregnation-modified wood"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","11253"],["dc.bibliographiccitation.issue","25"],["dc.bibliographiccitation.journal","Journal of Materials Science"],["dc.bibliographiccitation.lastpage","11266"],["dc.bibliographiccitation.volume","55"],["dc.contributor.author","Altgen, Michael"],["dc.contributor.author","Altgen, Daniela"],["dc.contributor.author","Klüppel, André"],["dc.contributor.author","Rautkari, Lauri"],["dc.date.accessioned","2020-12-10T14:11:39Z"],["dc.date.available","2020-12-10T14:11:39Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1007/s10853-020-04814-0"],["dc.identifier.eissn","1573-4803"],["dc.identifier.issn","0022-2461"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/71151"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Effect of curing conditions on the water vapor sorption behavior of melamine formaldehyde resin and resin-modified wood"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","215"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Holzforschung"],["dc.bibliographiccitation.lastpage","222"],["dc.bibliographiccitation.volume","62"],["dc.contributor.author","Thoemen, Heiko"],["dc.contributor.author","Klueppel, Andre"],["dc.date.accessioned","2018-11-07T11:20:02Z"],["dc.date.available","2018-11-07T11:20:02Z"],["dc.date.issued","2008"],["dc.description.abstract","In wood-based composite mats, mass and heat transfer are substantially influenced by their gas permeability. Thus, reliable permeability data are needed if one wants to model and simulate those processes taking place prior, during, and after hot-pressing operations of the mat. In this study, wood particles of surface and core layer type were obtained from two particleboard manufacturers, using impact mills and knife ring flakers, respectively. The permeability measurements were performed on the initial materials, as well as on subsets of it obtained by laboratory sieving. Additionally, medium density fibreboard (MDF) fibres from three species, namely pine (Pinus sylvestris), spruce (Picea abies) and rubberwood (Hevea Brasiliensis) were investigated. Cross-sectional and within-plane permeability was measured for densities from 250 to 1000 kg m(-3). The permeability of the core particle materials was determined on solidified samples. On the other hand, the surface particles and MDF fibres were investigated by means of a rapid testing method on loose furnish materials (without solidification). MDF mats exhibited lower permeability values than particle mats at low densities, but values were found in the same order of magnitude for high densities. Mainly, the small particles determine the pore structure and permeability of particle mats. Thickness and in-plane size of particles affect the mat permeability, with the in-plane size becoming primarily effective at elevated densities. The permeability of MDF fibre mats depends more on the anatomy of the raw material than on its size distribution. We suggest, based on computer simulations, that only the within-plane permeability has a strong effect on gas pressure and temperature conditions during hot pressing. The cross-sectional permeability does not play an essential role in this regard."],["dc.identifier.doi","10.1515/HF.2008.034"],["dc.identifier.isi","000253853200015"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/55434"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Walter De Gruyter & Co"],["dc.relation.issn","0018-3830"],["dc.title","An investigation on the permeability of different wood furnish materials"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]