Hydrophobization and Photo‐Stabilization of Radiata Pinewood: The Effect of the Esterification on Thermal and Mechanical Properties

René Herrera Díaz, Oihana Gordobil, Pedro L. de Hoyos‐Martinez, Anna Sandak, Jalel Labidi
Forests
wood esterification fatty acids hydrophobicity photo‐stability mechanical properties thermal oxidation

Wood protection through chemical modification has received increasing interest over the last decades due to the environmental issues related to conventional biocides or protecting products. Consequently, a wide range of new treatments are developed in laboratories, which are later scaled up in...

Fractionation of lignin using organic solvents: A combined experimental and theoretical study

Veerapandian Ponnuchamy, Oihana Gordobil, René Herrera Diaz, Anna Sandak, Jakub Sandak
International Journal of Biological Macromolecules
Hardwood kraft lignin Fractionation Chemometrics Density functional theory Hydrogen bonds Noncovalent interactions

Refining of industrial lignin to produce homogeneous fractions is essential for high-value applications. However, the understanding of key interactions between a variety of solvents with lignin polymer is still uncertain. In this work, single-step fractionation of industrial hardwood kraft...

Wood Properties Characterisation of Thermo‐Hydro Mechanical Treated Plantation and Native Tasmanian Timber Species

Michelle Balasso, Andreja Kutnar, Eva Prelovšek Niemelä, Marica Mikuljan, Gregory Nolan, Nathan Kotlarewski, Mark Hunt, Andrew Jacobs, Julianne O'Reilly‐Wapstra
Forests
Eucalyptus plantation wood modification thermo‐hydro mechanical treatments structural properties

Thermo‐hydro mechanical (THM) treatments and thermo‐treatments are used to improve the properties of wood species and enhance their uses without the application of chemicals. This work investigates and compares the effects of THM treatments on three timber species from Tasmania, Australia;...

Investigation of proteinaceous paint layers, composed of egg yolk and lead white, exposed to fire‑related effects

Lea Legan, Klara Retko, Kelly Peeters, Friderik Knez, Polonca Ropret
Scientific Reports

Fires can have a negative impact on the environment, human health, property and ultimately also on various objects of cultural heritage (CH). This paper deals with an investigation into the degradation of selected proteinaceous paint layers that were exposed to fire-related effects (i.e., fire...

Thickness Accuracy of Sash Gang Sawing

Kazimierz A. Orlowski, Jakub Sandak, Daniel Chuchala
Sawing accuracy Sash gang saw Thickness Lamellae Upper layer Quality

Thin lamellae, corresponding to the layer components of structural glued members, i.e. 2-ply or 3-ply glued parquet, can be manufactured in re-sawing operations of kiln-dried wood blocks. These must be prepared with high dimensional accuracy and adequate surface quality following specific...

Effect of the Drying Method of Pine and Beech Wood on Fracture Toughness and Shear Yield Stress

Daniel Chuchala, Jakub Sandak, Kazimierz A. Orlowski, Tomasz Muzinski, Marcin Lackowski, Tomasz Ochrymiuk
Materials
cutting process sawing process cutting power fracture toughness drying process pine wood beech wood shear yield stress

The modern wood converting processes consists of several stages and material drying belongs to the most influencing future performances of products. The procedure of drying wood is usually realized between subsequent sawing operations, affecting significantly cutting conditions and general...

Improving Mental Wellbeing in Organizations with Targeted Psychosocial Interventions

Dean Lipovac, László Hajdu, Sølvi Wie, Anders Q. Nyrud
mental wellbeing network science social contagion infection model influence maximization

Background: Mental wellbeing of employees is crucial for successful organizations. Psychosocial interventions that target highly contagious individuals (i.e., individuals that can ‘transmit’ their wellbeing to others) could efficiently improve overall wellbeing in the workplace. Objectives:...

HPLC-DAD-ESI-QTOF-MS Determination of Bioactive Compounds and Antioxidant Activity Comparison of the Hydroalcoholic and Water Extracts from Two Helichrysum italicum Species

Katja Kramberger, Darja Barlič-Maganja, Dunja Bandelj, Alenka Baruca Arbeiter, Kelly Peeters, Ana Miklavčič Višnjevec, Zala Jenko Pražnikar
Metabolites
H. italicum plant extracts phenolic compounds antioxidant activity HPLC-DAD-ESI-QTOF-MS

Mediterranean plant Helichrysum italicum represents a rich source of versatile bioactive compounds with potential benefits for human health. Despite extensive research on the plant’s active constituents, little attention has yet been paid to characterizing the relationship between its...

Recovery of Bioactive Compounds from Hazelnuts and Walnuts Shells: Quantitative–Qualitative Analysis and Chromatographic Purification

René Herrera, Jarl Hemming, Annika Smeds, Oihana Gordobil, Stefan Willför, Jalel Labidi
Biomolecules
nutshells biowaste valorization accelerated extraction chromatographic analysis fractionation phenolic compounds antioxidant capacity

Hazelnut (HS) and walnut (WS) shells, an abundant by‐product of the processing industries of these edible nuts, are traditionally considered as a low‐value waste. However, they are a source of valuable compounds with an interesting chemical profile for the chemical and pharmaceutical...

Graph Coloring based Heuristic for Crew Rostering

László Hajdu, Attila Tóth, Miklós Krész
Acta Cybernetica
crew rostering graph coloring tabu search

In the last years personnel cost became a huge factor in the financial management of many companies and institutions.The firms are obligated to employ their workers in accordance with the law prescribing labour rules. The companies can save costs with minimizing the differences between the real...

Phenolic Compounds in Poorly Represented Mediterranean Plants in Istria: Health Impacts and Food Authentication

Ana Miklavčič Višnjevec, Matthew Schwarzkopf
Molecules
phenolic compound food authentication technique health impacts Punica granatum L. Ziziphus jujuba Mill. Arbutus unedo L. Celtis australis L. Ficus carica L. Cynara cardunculus var. Scolymus L.

Phenolic compounds are well-known bioactive compounds in plants that can have a protective role against cancers, cardiovascular diseases and many other diseases. To promote local food development, a comprehensive overview of the phenolic compounds’ composition and their impact on human health...

Fatigue behavior of beech and pine wood modified with low molecular weight phenol-formaldehyde resin

Jaka Gašper Pečnik, Andreja Kutnar, Holger Militz, Matthew Schwarzkopf, Hannes Schwager
Holzforschung
beech creep rate fatigue strength phenol formaldehyde pine stress level wood modification

Modification of wood improves certain properties of natural wood and presents competitive alternatives to synthetic materials that may have larger environmental impacts. One aspect of modified wood that is currently not fully understood is the dynamic performance and how it is affected by the...

On-Line Measurement of Wood Surface Smoothness

Jakub Sandak, Kazimierz A. Orlowski, Anna Sandak, Daniel Chuchala, Piotr Taube
Drvna industrija
wood surface smoothness triangulation scanner surface defects in-line

The latest progress in the field of optics and microelectronics resulted in the development of new generation vision systems capable of scanning surface topography with very high sampling frequencies. The blue color of illuminating light as well as novel systems for controlling ultra-thin laser...

Effect of desk materials on affective states and cognitive performance

Dean Lipovac, Nastja Podrekar, Michael D. Burnard, Nejc Šarabon
Journal of Wood Science
Wood Materials Emotion Cognition Attention

Visual and tactile properties of materials can influence human emotional and cognitive functioning. Existing studies indicate that exposure to wood may lead to more favourable outcomes than contact with other common materials, but evidence is limited. We measured affective states and cognitive...

Effects of visual exposure to wood on human affective states, physiological arousal and cognitive performance: A systematic review of randomized trials

Dean Lipovac, Michael D. Burnard
Indoor and Built Environment
Wood Human stress Emotions Autonomic activation Executive functions Restoration

Background: Bringing features of nature indoors can positively influence indicators of human stress. Since wood is a natural material, it may produce similar benefits. The objective of the review was to (1) examine the influence of visual (real or virtual) contact with either real or imitated...

FTIR analysis of chemical changes in wood induced by steaming and longitudinal compression

Mátyás Báder, Róbert Németh, Jakub Sandak, Anna Sandak
Cellulose
Infrared spectroscopy Lignin Hemicellulose Cellulose Pleating process Hygroscopic properties

Pleating is an optimal way to increase bendability of wood used in diverse industrial applications. It results in the excessive buckling of cell walls and modifications of constitutive polymers. However, thoughtful understanding of the physical–chemical mechanisms of that modification process...

THE EFFECT OF LOG SORTING STRATEGY ON THE FORECASTED LUMBER VALUE AFTER SAWING PINE WOOD

Piotr Taube, Kazimierz A. Orłowski, Daniel Chuchała, Jakub Sandak
pine log sorting method log quality shape scanner sawmill

The optimal transformation path for the resource is determined by the quality of a log combined with its dimension. The commercial value of derived products is also closely connected with the size and extent of containing wood deficiencies. The results of studies with three diverse strategies...

Densified wood impregnated with phenol resin for reduced set-recovery

Matthew Schwarzkopf
Wood Material Science & Engineering
THM wood modification impregnation densification

Thermal-hydro-mechanical (THM) densification treatments were performed on Populus spp. (poplar), Picea abies (spruce), and Fagus sylvatica (beech). Prior to THM treatment, a low-molecular weight resin was impregnated into the wood structure. Densification results, mechanical characteristics...

Proactive and reactive context reasoning architecture for smart web services

Nawel Sekkal, Sidi Mohamed Benslimane, Michael Mrissa, Cheol Young Park, Boudjemaa Boudaa
International Journal of Data Mining, Modelling and Management
smart web service the web of things context reasoning proactive reactive multi-entity Bayesian networks MEBNs PR-OWL

The web of things (WoT) uses web technologies to connect embedded objects to each other and to deliver services to stakeholders. The context of these interactions (situation) is a key source of information which can be sometimes uncertain. In this paper, we focus on the development of...

Seismic Design of Timber Buildings: Highlighted Challenges and Future Trends

Mislav Stepinac, Iztok Šušteršič, Igor Gavrić, Vlatka Rajčić
seismic design tall timber buildings timber composites seismic retrofitting Eurocode 8

Use of timber as a construction material has entered a period of renaissance since the development of high-performance engineered wood products, enabling larger and taller buildings to be built. In addition, due to substantial contribution of the building sector to global energy use, greenhouse...

METODE PRORAČUNA POTRESNE OTPORNOSTI – ENERGETSKE METODE; SEISMIC DESIGN METHODS – ENERGY-BASED DESIGN

Mislav Stepinac, Filip Borak, Iztok Šušteršič, Igor Gavrić
potres earthquake rizik risk hazard osjetljivost vulnerability eneregetske metode energy-based design

This paper gives a brief overview of the current design of earthquake resistant structures. The paper presents and summarizes the latest insights regarding the design of earthquake resistant buildings, with the most basic examples and a critical review of the current state of regulations and the...

Micromechanical properties of beech cell wall measured by micropillar compression test and nanoindentation mapping

Petr Klímek, Václav Sebera, Darius Tytko, Martin Brabec, Jaroslav Lukeš
Holzforschung
beech cell wall mechanical properties micropillar compression nanoindentation

Wood exhibits very different behavior and properties at different scales. One important scale is the cell wall (CW) that is commonly tested by nanoindentation. Common nanoindentation provides important insight into the material but has limitations because it does not apply uniaxial stress and...

Development of Low-Cost Portable Spectrometers for Detection of Wood Defects

Jakub Sandak, Anna Sandak, Andreas Zitek, Barbara Hintestoisser, Gianni Picchi
Sensors
NIR spectroscopy wood defects portable instruments in-filed measurement

Portable spectroscopic instruments are an interesting alternative for in-field and on-line measurements. However, the practical implementation of visible-near infrared (VIS-NIR) portable sensors in the forest sector is challenging due to operation in harsh environmental conditions and natural...

Using questionnaires to measure attitudes and behaviours of building users: Data Management Plan

Ana Slavec
data management

Data management plan (DMP) for postdoctoral project on Using questionnaires to measure attitudes and behaviours of building users. The plan has the following sections: Data Collection, Documentation and Metadata, Ethics and Legal Compliance, Storage and Backup, Selection and Preservation, Data...

Cavitation as a Potential Technology for Wastewater Management – An Example of Enhanced Nutrient Release from Secondary Pulp and Paper Mill Sludge

Mija Sežun, Janko Kosel, Mojca Zupanc, Marko Hočevar, Janez Vrtovšek, Martin Petkovšek, Matevž Dular
Strojniški vestnik – Journal of Mechanical Engineering

This study investigates efficiency of hydrodynamic cavitation alone and in combination with the addition of NaOH for the treatment of secondary pulp and paper mill sludge in order to enhance nutrient release. First, two laboratoryscale devices were tested: the blow-through and the rotating...

On the König deficiency of zero-reducible graphs

Miklós Bartha, Miklós Krész
Journal of Combinatorial Optimization
Graph matching Independent set König property Graph reduction Graph algorithm

A confluent and terminating reduction system is introduced for graphs,which preserves the number of their perfect matchings. A union-find algorithm is presented to carry out reduction in almost linear time. The König property is investigated in the context of reduction by introducing the König...

Using 3D digital image correlation in an identification of defects of trees subjected to bending

Jan Tippner, Luděk Praus, Martin Brabec, Václav Sebera, Barbora Vojáčková, Jaromír Milch
Urban Forestry & Urban Greening
Arboriculture Optical non-contact assessment Pulling test Strain Tree defect Tree-root system

Abrupt changes of climate have intensified during the last few decades, bringing higher risks from tree failures by either uprooting or stem breakage. To eliminate the risks, many techniques of tree assessment are being used. In the presented work, an optical technique based on 3D Digital Image...

A novel rotation generator of hydrodynamic cavitation for the fibrillation of long conifer fibers in paper production

Janez Kosel, Andrej Šinkovec, Matevž Dular

In this work we present a new rotation cavitation generator that is capable of energy efficient refining of conifer rich pulp samples in paper pulp industry.

UNDERPINNING THE VITAL ROLE OF THE FOREST-BASED SECTOR IN THE CIRCULAR BIOECONOMY - WOODCIRCUS

Michael David Burnard
Circular economy WoodCircus action

.An article on circular economy.

ARCHITECTURE AS A RESEARCH PROJECT

Eva Prelovšek Niemelä, Aarne Niemelä
Architecture InnoRenew CoE Horizon 2020

An article on architecture.

DYNAMIC RESPONSE OF TALL TIMBER BUILDINGS UNDER SERVICE LOAD

Iztok Šušteršič
engineered wood tall wooden buildings damping mass distribution

An article on tall timber buildings.

FINNISH WOODEN HOUSES AND LEGISLATIVE SUPPORT COMPARED TO SLOVENIA

Aarne Johannes Niemelä
wooden construction governmantal support Finnland

An article on promoting wooden construction in urban scale.

PROGRAMMING SERVICE-LIFE OF WOOD WITH PROJECT CLICKDESIGN

Jakub Sandak
CLICKdesign wood

An article about a new research project called CLICKdesign.

Wooden buildings of the demanding dimensions

Janez Koželj, Eva Prelovšek Niemelä, Jure Kotnik, Lenka Kavčič, Iztok Šušteršič
sustainable transformation wood construction tall wooden buildings

An article about wood construction.

Generalized Petersen Graphs and Kronecker Covers

Matjaž Krnc, Tomaž Pisanski
generalised Petersen graphs Kronecker cover

Abstract: The family of generalised Petersen graphs G (n, k), introduced by Coxeter et al. [4] and named by Watkins (1969), is a family of cubic graphs formed by connecting the vertices of a regular polygon to the corresponding vertices of a star polygon. The Kronecker cover KC (G) of a...

Investigating face veneer check development in decorative plywood panels: the impact of four common manufacturing factors

Michael Burnard, Scott Leavengood, Lech Muszyński, Lisa Ganio
European Journal of Wood and Wood Products

An optical method based on digital image correlation was used to investigate the impact of four decorative plywood manufacturing factors (core type, veneer type, adhesive type and lathe check orientation) on face veneer checking. The four core types were: combination core, medium density...

Human stress responses in office-like environments with wood furniture

Michael David Burnard, Andreja Kutnar
Building Research & Information
healthy offices occupant stress timber materials indoor environment wellbeing

Stress is a major public health concern and work stress is a contributor to both acute and chronic stress. Moreover, most people spend the majority of their time indoors. It follows that the design of office spaces and other interior environments should consider the health impacts of individuals...

Using shear-wave elastography in skeletal muscle: A repeatability and reproducibility study on biceps femoris muscle

Nejc Šarabon, Žiga Kozinc, Nastja Podrekar

Shear-wave electrography (SWE) is a method used to assess tissue elasticity. Recently, it has been used to assess muscle stiffness, but the reliability of SWE for this purpose has not been thoroughly investigated. The purpose of this study was to evaluate the repeatability and reproducibility of...

Application of GRAS Compounds for the Control of Mould Growth on Scots Pine Sapwood Surfaces: Multivariate Modelling of Mould Grade

Olena Myronycheva, Faksawat Poohphajai, Margot Sehlstedt-Persson, Tommy Vikberg, Olov Karlsson, Helmut Junge, Dick Sandberg
Forests
bacteria potassium silicate N-Alkylbensyldimethylammonium chloride wood fungi mould area PLS modeling

In this study, the Generally Recognised as Safe (GRAS) compounds were applied in order to study mould-fungi growth on dried Scots pine sapwood. Background and Objectives: The transition to the use of more sustainable wood-material may be possible by applying GRAS compounds that can control and...

Discovering the Hidden Community Structure of Public Transportation Networks

László Hajdu, András Bóta, Miklós Krész, Alezira Khani, Lauren M. Gardner
Networks and Spatial Economics
Network modeling Public Transportation Community Structure Infrastructure security

Advances in public transit modeling and smart card technologies can reveal detailed contact patterns of passengers. A natural way to represent such contact patterns is in the form of networks. In this paper we utilize known contact patterns from a public transit assignment model in a major...

Volatile organic compounds emitted from untreated and thermally modified wood - a review

Jure Pohleven, Michael David Burnard, Andreja Kutnar
Wood and Fiber Science
wood thermally modified wood volatile organic compounds VOCs emissions

Volatile organic compounds (VOCs) are a diverse group of compounds that can have a strong impact on indoor air quality.Wood and thermally modified wood emit VOCs, which are referred to as wood VOCs, and can elicit various negative or positive effects in different organisms, including humans....

Low-cost capillary electrophoresis instrumentation for assessment of rain water ionic composition

Jakub Sandak, Jelena Gorbatsova, Piret Saar-Reismaa, Mihkel Kaljurand
capillary electrophoresis rain water ionic composition COST Action CA16215

The objective of this Short Term Scientific Mission was to test the suitability of capillary electrophoresis for determination of rain water chemical composition. The fully functional, open-hardware, low-cost instrument was assembled and tested. An original protocol for determination of the...

Comparison of Self-Reported Sedentary Time on Weekdays with an Objective Measure (activPAL)

Kaja Kastelic, Nejc Šarabon
Measurement in Physical Education and Exercise Science
validity bias error concordance sedentary lifestyle

Self-reports are commonly used tools for obtaining sedentary behaviors. The aim of our study was to assess agreement between two self-reports of sedentary time and a gold standard sedentary time objective monitor. A worksite sample (n = 42) completed the Slovenian version of the Global Physical...

Assessment of the chemical change in heat treated pine wood by near infrared spectroscopy

Zuzana Vidholdová, Anna Sandak, Jakub Sandak
Pine Heat treatment xylograms FT-NIR

Fourier-transform near-infrared spectroscopy (FT-NIR) was used as none-destructive method to determinate changes in the chemical structure of heat-treated wood. For this purpose, pine sapwood (Pinus sylvestris L.) was treated at different temperatures (from 100 °C to 240 °C) and for three...

Glued-in rods in cross laminated timber – Numerical simulations and parametric studies

Boris Azinović, Henrik Danielsson, Erik Serrano, Miha Kramar
Construction and Building Materials
Glued-in rods Cross laminated timber (CLT) Parametric study Nonlinear numerical modelling Glued-in length Rod diameter Rod orientation

Numerical simulations and parametric studies of glued-in rods in cross-laminated timber have been performed. The simulations were based on 3D finite element analysis, using a cohesive surface model for the bond-lines between the laminations and the bond-line along the rod. The parametric studies...

Slovenska znanost: Akademska igra ali adut družbenega napredka

Franci Demšar, Jasna Kontler-Salamon

This book presents Slovenian science from the perspective of two recognised scientists and scientific observers. 

Thermally modified (TM) beech wood: compression properties, fracture toughness and cohesive law in mode II obtained from the three-point end-notched flexure (3ENF) test

Václav Sebera, Miguel Redón-Santafé, Martin Brabec, David Děcký, Petr Čermák, Jan Tippner, Jaromír Milch
Holzforschung
beech brittleness of wood cohesive law compliance-based beam method (CBBM) compressive elastic modulus digital image correlation (DIC) equivalent crack length approach (ECLA) fracture mode II thermal modification thermally modified wood (TMW) three-point end-notched flexure (3ENF)

The fracture properties of thermally modified beech (Fagus sylvatica) wood (TMW) at 180° and 200°C were evaluated in mode II using the three-point end-notched flexure (3ENF) scheme assisted by threedimensional (3D) stereovision equipment for obtaining displacements and strains. The...

Development of a Sensorized Timber Processor Head Prototype – Part 1: Sensors Description and Hardware Integration

Jakub Sandak, Anna Sandak, Stefano Marrazza, Gianni Picchi
timber quality processor head sensors NIR cutting forces

Forest operations are in constant development to provide increasingly higher standards of economic and environmental sustainability. The latest innovation trends are concentrated in the generation, storage and management of data related to the harvesting process, timber products and logistics...

Bio-based building skin

Anna Sandak, Jakub Sandak, Marcin Brzezicki, Andreja Kutnar
Environmental Footprints and Eco-design of Products and Processes

This book provides a compendium of material properties, demonstrates several successful examples of bio-based materials’ application in building facades, and offers ideas for new designs and novel solutions. It features a state-of-the-art review, addresses the latest trends in material...

Damage progression analysis in a historical timber framed wall under cyclic loads through an image-based tracking method

Jakub Sandak, Mariapaola Riggio, Nicola Ruggieri, Anna Sandak
Construction and Building Materials
Image-based tracking Cyclic loads Damage progression Historical timber-framed wall

The scope of this paper is to analyse local phenomena associated with the damage progression and postelastic behaviour of a historical timber-framed wall system under cyclic loads. It was assessed on series of points identified on the wall by processing time-resolved sequences of images....

Effects of cycle and treadmill desks on energy expenditure and cardiometabolic parameters in sedentary workers: review and meta-analysis

Nastja Podrekar, Žiga Kozinc, Nejc Šarabon
International Journal of Occupational Safety and Ergonomics
active workstation bike desk walking desk workplace ergonomics workplace intervention

Purpose. The aim of this article was to evaluate the effects of cycle and treadmill desks on energy expenditure and car- diovascular and biochemical indicators in sedentary workers. Materials and methods. In February 2018, six databases were searched. Both parallel and crossover design studies...

Manufacturing fit-for-purpose paper packaging containers with controlled biodegradation rate by optimizing addition of natural fillers

Anna Sandak, Jakub Sandak, Izabela Modzelewska
Cellulose
waste paper paper pots cereal bran degradation rate soil FT-NIR

Natural fillers were utilized for manufacturing horticultural packaging products. Five types of pots produced from waste paper with wheat and rye bran additions were compared with commercially available containers. The aim was to examine the influence of soil type on the degradation rate and...

Chemical and appearance changes of wood due to artificial weathering – Dose–response model

Marta Petrillo, Jakub Sandak, Paolo Grossi, Anna Sandak
Journal of Near Infrared Spectroscopy
wood weathering dose–response model multi-sensor measurement near infrared colour gloss

The aim of this study was to assess a model for the surface degradation kinetics of natural wood exposed to artificial weathering. The photochemical and physical processes of weathering result in simultaneous changes of both the wood matrix composition (i.e. lignin content, cellulose...

Promoting Active Work and Active Lifestyle in a Built Environment

Podrekar Nastja

A healthy lifestyle includes many factors. One of the main ones is sufficient physical activity, which positively affects many health-related parameters: it reduces the risk of cardiovascular and metabolic diseases, musculoskeletal disorders, and promotes the individual's mental abilities....

Experimental investigation of the axial strength of glued-in rods in cross laminated timber

Boris Azinović, Erik Serrano, Miha Kramar, Tomaž Pazlar
Materials and Structures
Glued-in rods Cross laminated timber (CLT) Pull–pull experiment Glued-in length Rod-to-grain angle Failure mechanisms in CLT

The paper presents results from an experimental assessment of glued-in rods in cross laminated timber (CLT). For the purposes of the study more than 60 pull–pull tests were performed, where the specimens varied in terms of bonded-in length (from 80 to 400 mm), rod diameter (16–24 mm) and...

Prototype of the Near-Infrared Spectroscopy Expert System for Particleboard Identification

Anna Sandak, Jakub Sandak, Dominika Janiszewska, Salim Hiziroglu, Marta Petrillo, Paolo Grossi
Journal of Spectroscopy

The overall goal of this work was to develop a prototype expert system assisting quality control and traceability of particleboard panels on the production floor. Four different types of particleboards manufactured at the laboratory scale and in industrial plants were evaluated. The material...

MACHINE VISION DETECTION OF THE CIRCULAR SAW VIBRATIONS

Jakub Sandak, Kazimierz A. Orlowski
Journal of Machine Engineering
circular saw blade vibrations machine vision system supervising circular rotation speed

Abstract: Dynamical properties of rotating circular saw blades are crucial for both production quality and personnel safety. This paper presents a novel method for monitoring circular saw vibrations and deviations. A machine vision system uses a camera and a laser line projected on the saw’s...

Multi-depot bus schedule assignment with parking and maintenance constraints for intercity transportation over a planning period

Dávid Balázs, Krész Miklós
Transportation Letters
Bus scheduling parking maintenance long-term planning public transportation assignment integer programming network flow

This article introduces the schedule assignment problem for public transit, which aims to assign vehicle blocks of a planning period to buses in the fleet of a transportation company. This assignment has to satisfy several constraints, the most important of which is compatibility, meaning that...

Acute effect of full time office work in real environment on postural actions and lumbar range of motion

Kastelic Kaja, Matej Voglar, Šarabon Nejc
Journal of Electromyography and Kinesiology

Introduction: Prolonged sitting is often proposed as a risk factor for low back pain development. The purpose of this study was to evaluate the acute effect of full time office work on sensorimotor trunk functions. Methods: Seventeen healthy office workers participated in the study. Maximal...

XLAM RIBBED PLATES

Iztok Šušteršić, Bruno Dujič, Simon Aicher
Cross-laminated timber Hybrid plates Experimental testing Ribs Material rationalisation

Cross laminated timber (CLT, X-lam) started its mass production in the beginning of the 21st century. Over time it has become one of the most used products in the timber construction industry with its worldwide use constantly growing. The quantity of yearly cut timber especially in Europe is...

Utilisation of chemically modified lampante oil for wood protection

Matthew Schwarzkopf, Michael Burnard, Viacheslav Tverezovskiy, Andreas Treu, Miha Humar, Andreja Kutnar
European Journal of Wood and Wood Products
wood protection olive oil wood modification

Within the Slovenian region of Istria, the olive growing and oil production industry is strong. This industry has a long history and the olives grown here have high levels of biologically active compounds including a variety of phenolic compounds. Using residual materials generated by this...

POHIŠTVENA INDUSTRIJA IN ODPRTO INOVIRANJE (=Furniture Industry and Open Innovation)

Barbara Rovere, Andreja Kutnar

Professional journal article describing the potential for open innovation in the furniture sector in Slovenia. Article is in the Slovene Language. 

An optical method for rapid examination of check development in decorative plywood panels

Michael David Burnard, Lech Muzynski, Scott Leavengood, Lisa Ganio
European Journal of Wood and Wood Products
Digital Image Correlation optical methods crack assessment maple veneer plywood

Common methods for assessment of surface checking in decorative plywood panels rely on manual handling and visual inspection of specimens, a laborious procedure practically limiting the number of materials and variables that may be considered within one project. In this study, a new automated...

An examination of the potential for the use of the Maillard reaction to modify wood

Kelly Peeters, Erik Larnøy, Andreja Kutnar, Callum A.S. Hill
International Wood Products Journal
Beech and pine Maillard reaction primary amines sugars thermal reaction water deliverable wood modification

Finding efficient ways to decrease wood decay caused by fungi is an important issue in the timber construction. A possible way to avoid wood decay by fungi is by reducing the water content of wood, since water is a primary condition for fungal growth. Bulking of the wood cell wall by chemical...

Exploring connections between researchers and ideas in the European Hardwoods Innovation Alliance using two-mode social network analysis

Ana Slavec, Barbara Rovere, Uwe Kies, Andreas Kleinschmidt von Lengefeld
innovation research mapping and clustering social network analysis.

Two-mode social network analysis (SNA) can be applied to data that consists of two sets of units, from analysing persons and societies to authors and papers. The objective of this paper is to evaluate the possibilities of this approach for the analysis of connections between researchers and...

Open innovation in manufacturing industries: A literature review

Barbara Rovere, Michael Burnard, Andreja Kutnar, Eric Hansen
open innovation,

Contribution submitted to and presented at the 2018 WESTERN FORESTRY GRADUATE RESEARCH SYMPOSIUM held at Oregon State University, Corvallis, OR, USA in April 2018.

WOOD AND HUMAN STRESS IN THE BUILT INDOOR ENVIRONMENT / LES IN STRES V GRAJENEM NOTRANJEM OKOLJU

Michael Burnard
cortisol building materials construction design natural materials regenerative design restorative design human well-being

This study of human stress in the built environment included a literature review, a survey assessing user perceptions of building material naturalness, and an experiment to determine the human stress impacts of wood use in office-like environments. The literature review indicated the potential...

Wood modification technologies - a review

Dick Sandberg, Andreja Kutnar, George Mantanis
iForest - Biogeosciences and Forestry
Chemical Treatments Thermo-hydro-mechanical LCA Acetylation Furfurylation Resin Impregnation Environmental Impacts Densification

The market for new durable products of modified wood has increased substan- tially during the last few years, especially in Europe. This increased interest depends partly on the restricted use of toxic preservatives due to increased environmental concern, as well as the need for reduced...

Examining the evolution and convergence of wood modification and environmental impact assessment in research

Michael Burnard, Marko Posavčević, Edo Kegel
iForest - Biogeosciences and Forestry
Bibliometrics Data Mining Network Analysis Wood Modification Environmental Impact Assessment COST Action FP1407 Wood
Supplemental material:

This paper uses network analysis of two fields to demonstrate the value of the technique, and to examine how the fields have changed over time and to what extent they overlap. This was of interest for a COST Action (FP1407, ModWoodLife: http://costfp1407.iam.upr.si)

Life Cycle Assessment – Opportunities for Forest Products Sector

Andreja Kutnar, Callum AS Hill
wood S-LCA product category rules (PCR) environmental impact environmental product declaration (EPD) forest products life cycle assessment (LCA) O-LCA

The utilization of wood in long life products, such as construction materials in the built environment, is an e ective way to optimize the use of natural resources while also reducing negative environmental impacts. However, the environmental bene ts of timber, especially in the construction...

Performance of three-layer composites with densified surface layers of Nothofagus pumilio and N. antarctica from Southern Patagonian forests

Matthew Schwarzkopf, Michael Burnard, Guillermo Martínez Pastur, Lucas Monelas, Andreja Kutnar
Wood Material Science & Engineering
Densification silviculture low-density wood modified wood hardwoods

Nothofagus pumilio and N. antarctica forests of Southern Patagonia, Argentina are currently being managed for production of saw logs with fast growing conditions. The result of these management strategies is faster growing forests, but also an increase in the percentage of low-density wood. The...

Micromechanics of the internal bond in wood plastic composites: integrating measurement and modeling

Matthew Schwarzkopf, Lech Muszyński, Chad C. Hammerquist, John A. Nairn
Wood Science and Technology
wood digital image correlation strain

In this study, an integrated approach combining experimental measurements and numerical modeling was used for characterization of load transfer in the wood/matrix interface in wood plastic composites (WPCs). The experimental methodology was based on optical measurement of surface displacements...

The importance of ergonomics in designing the built environment (Pomen ergonomije pri oblikovanju grajenega okolja - ergonomska ureditev pisarne)

Kozinc Žiga, Kastelic Kaja, Šarabon Nejc

Within this article, we reviewed the most important standards and recommendations on office furniture design. Office environments, designed in line with these recommendations, decrease the risk of injuries and other problems, associated with sedentary jobs.