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Evaluation of Some Finishing Properties of Oil Palm Particleboard for Furniture Application  [PDF]
J. Ratnasingam,V. Nyugen,F. Ioras
Journal of Applied Sciences , 2008,
Abstract: The finishing properties of particleboard made from the Empty-Fruit Bunch (EFB) of oil palm (Elaeis guineensis Jacq.) were evaluated for its suitability for furniture applications, using different coating and overlay materials. The results found that the thick plastic-formica overlay provided the best surface finish, in terms of surface smoothness, adhesion strength and impact resistance. Although the polyurethane lacquer provided an acceptable finish, its quality and performance is not comparable to that of the thick plastic overlay. Despite the fact that the use of such overlay material may render the material not aesthetically appealing and limit it to concealed applications or where the thick overlay material is tolerated, its cost competitiveness and environmental friendliness may be able to position the oil palm particleboard as a substitute for the conventional wood-based particleboard in the furniture manufacturing industry.
Interaction of dispersed polyvynil acetate with silicate in finishing materials  [cached]
Runova, R. F.,Maistrenko, A. A.
Materiales de Construccion , 1996,
Abstract: This article focuses on the processes of interaction between calcium silicate hydrates and dispersed polyvinyl acetate in tight films with the aim of developing compounds meant for restoration and finishing works. The basis of this development relies on the concept concerning the determining role of the crystal-chemical factor of the silicate phase in the formation of organic-mineral compounds of increased durability. The characteristics of dispersed calcium silicate hydrates are portrayed. The preparation conditions, accounting for the synthesis of the product of submicrocrystalline structure, conforming with the stoichiometry CaO SiO2 =0.8-2.0 have been determined. The interaction has been studied for compounds achieved by mixing ingredients in a rapid whirling mixer, and subjected to hardening at T=20+2 T. With the aid of XRD, DTA and Infra-Red Spectrometry methods the formation process of the sophisticated polymer silicate phase in the material was observed for a period of 90 days. The properties of the film were investigated and its high resistance against the influence of external factors was established. On this basis a conclusion concerning the quite high effectiveness of substituting portland cement with dispersed calcium silicate hydrate in polymer cement compounds has been made. White colour and other various special properties determine the suitability for repair and finishing works on facades of buildings. Este artículo está orientado a estudiar los procesos de interacción entre los silicatos cálcicos hidratados y el acetato de polivinilo disperso en capas impermeables, con el objeto de desarrollar compuestos destinados para la restauración. El fundamento de estos estudios es determinar el papel que los factores cristaloquímicos de las fases silicato tienen en la formación de compuestos órganominerales de elevada durabilidad. Se han descrito las características de los silicatos cálcicos hidratados dispersos. Se han determinado las condiciones de preparación, teniendo en cuenta la síntesis de los productos de estructura submicrocristalina, de compuestos con una estequiometría CaO SiO2 = 0,8-2,0. La interacción se ha estudiado sobre productos obtenidos por la mezcla, en un molino rotatorio, de los distintos componentes curados a la T = 20+2 oC. A través de DRX, Análisis Térmicos (A.T.) y Espectroscopia IR se han estudiado, durante un período de 90 días, los procesos de formación de una fase polímera de silicatos en el material. Se han estudiado las propiedades de la película de polímero y se ha establecido la influencia de factores externos s
Evaluating the Effect of Finishing Materials on Viscous Elastic Properties of Particle Boards
Jonas VOBOLIS,Darius ALBREKTAS
Materials Science , 2012, DOI: 10.5755/j01.ms.18.3.2436
Abstract: In the present research the investigation of finishing wood particle boards is presented. The testing process of wood particle boards involved an original stand. The following three types of finished boards underwent evaluation: finished with veneer on both sides, finished with veneer on the one side and with compensatory paper on the other side, and finished with melamine impregnated paper on both sides. It was established that the first vibrational modes of finished wood particle boards in two perpendicular directions share similarity with modes of the beam-shaped body in terms of their shape. It was obtained that the modulus of elasticity of wood particle boards with different finishing differs by approximately 30 % – 70 % in two perpendicular directions. It was established that when dealing with boards finished with veneer on both sides, with veneer on the one side and compensatory paper on the other side, and with melamine impregnated paper, the value of the modulus of elasticity in two perpendicular directions differs by 1.71, 1.54 and 1.34 times, respectively. It was found that in the case of boards finished with veneer on both sides and with veneer on the one side and compensatory paper on the other side, the coefficient of damping change in two perpendicular directions is less than the one of the board finished with melamine impregnated paper by 25 %. DOI: http://dx.doi.org/10.5755/j01.ms.18.3.2436
Indoor decorating and refurbishing materials and furniture volatile organic compounds emission labeling systems: A review
WeiWei Liu,YinPing Zhang,Yuan Yao,JingGuang Li
Chinese Science Bulletin , 2012, DOI: 10.1007/s11434-012-5208-x
Abstract: The volatile organic compounds (VOC) emitted from indoor decorating and refurbishing materials and furniture is recognized as one of the main causes of bad indoor air quality, which has resulted in serious economic losses. In European countries and the U.S., labeling systems for indoor decorating and refurbishing materials and furniture were established to address this issue with good effect. This paper is a review of these existing labeling systems. The basic principle of the labeling systems is introduced. The technical, policy and operational parts of the labeling systems are then discussed. The research concentrates on target pollutants, their threshold values and the testing methods employed. Some problems were uncovered in these labeling systems: too many VOCs were targeted; the method to determine the threshold values was not very rigorous; the testing time was too long (7–28 d). Some China’s special features in developing such system are stated. Therefore, as the world’s largest national producer and consumer of wood based panels and furniture, China should learn from foreign experience of establishing labeling systems as much as it can. However China should not simply copy the foreign approaches but develop its own scientific labeling system for indoor decorating and refurbishing materials and furniture.
INFLUENCE OF THE RAW MATERIALS AND PRODUCTION PARAMETERS ON CHOSEN STANDARD PROPERTIES FOR FURNITURE PANELS OF BIOCOMPOSITES FROM FIBROUS CHIPS
Grzegorz Kowaluk,Dorota Fuczek,Piotr Beer,Marek Grzeskiewicz
BioResources , 2011,
Abstract: The particleboards with different density from specially prepared particles from black locust and willow were prepared. The standard mechanical parameters of the panels were investigated, as well as the corner wall connections with eccentric connecting fitting element or confirmat strength. The screw withdrawal resistance and hinge bearing were also measured for investigated panels. The results, compared to the strength of commercial particleboards, show that excluding panels from black locust with low density, the rest of the panels can be successfully used for furniture production purposes.
Study on Neutralization Progress Model of Concrete with Coating Finishing Materials in Outdoor Exposure Conditions Based on the Diffusion Reaction of Calcium Hydroxide
Jae-Hong Park,Takuya Hasegawa,Osamu Senbu,Dong-Cheon Park
International Journal of Concrete Structures and Materials , 2012, DOI: 10.1007/s40069-012-0014-z
Abstract: In order to predict the neutralization of concrete which is the reaction of carbonation dioxide from the outside and cement hydration product, such as calcium hydroxide and C–S–H, it was studied the numerical analysis method considering change of the pore structure and relative humidity during the neutralization reaction. Diffusion–reaction neutralization model was developed to predict the neutralization depth of concrete with coating finishing material. In order to build numerical analysis models considering outdoor environment and finishing materials, the adaption of proposed model was shown the results of existing outdoor exposure test results and accelerated carbonation test.
THE EFFECTS OF DISTANCE EDUCATION MATERIALS ON THE TRADITIONAL ACCOUNTING COURSE  [PDF]
Mehmet Sinan BOZOK
The Turkish Online Journal of Distance Education , 2011,
Abstract: In this study, under the assumption of the distance education materials used in a traditional accounting course as supporting tools, the effect on the student success is investigated. Results show us positive effect on the student success according to the grades. It is not only beneficial to the students but also to the instructors.
Effect of Traditional Therapies on Primary Healthcare: Preliminary Study
Akdeniz M et al.
Konuralp Tip Dergisi , 2012,
Abstract: Objective: This study aims to investigate the health behavior of patients, their time and reason of encounter. Methods: 20 women and 9 males participated in this study. The survey questions with face-to-face interview technique were applied. Analysis was performed on 29 patients. In this study, individuals' complaints when first admitted to whom, when and what problems they applied to physician. If they applied physician and they are using family therapy; what is happening and why they use them, a questionnaire was applied. Results: The distribution of participants by age group 10.3% [three Male (M)] from 18 to 25 year age group, 13.7% percent [two M and two Female (F)] 26 to 35 year age group, 24.1% (seven M) 36-45 year age group, 27.5% (three M, five F) from 46 to 55 year age group, 20.6% (four M, two F) 56-65 year age group and 3.4% (one M) 66 years and older band. Looking at the level of education of participants, of 13.7% percent (n=4) didn’t finish elementary; of 51.7% percent (n=15) were elementary, of 13.7% percent (n=4), were middle’s, of 17.2% percent (n=5) were maturation’s and of 3.4% graduation’s. The majority of respondents (86.3%) stated that they didn’t use only physician’s recommended treatment. There is no statistically significant difference between men and women (p=0.636) to comply or not comply their physician’s recommendations. 34.4% of respondents do not only apply their physicians’ recommendations stated that they have used family therapy. Using family therapy in terms of, there is no significant difference between women and men (p=0.661). Conclusion: 52% of patients receiving conventional treatment stated that they have not declared it to their family physicians. 50% of the patients who have used traditional therapy were also used of CAM.
Research on the Spatial Characteristics and the Sustainable Development Strategies of Chinese Furniture Industry  [PDF]
Shiqing Yan
Current Urban Studies (CUS) , 2017, DOI: 10.4236/cus.2017.54023
Abstract:
The overall spatial difference, the inter-regional and intra-regional spatial differences of the three regions—the eastern, central and western regions of Chinese furniture industry are obvious and constantly shrink. The number of population, the average consumption level of the residents, the added value of the secondary industry, the amount of foreign capital and the amount of furniture exports and other factors affect the furniture industry’s spatial characteristics, but there are regional differences in the influence mechanism. In order to improve the industry development sustainably, it is necessary to optimize the division of furniture industry, focus on building cross-regional furniture industry chain, adopt advanced technology and equipment and strengthen the furniture brand construction. The eastern region should increase the technical input; the central region should pay more attention to market development, and the western region needs to strengthen industrial and financial support.
A preliminary checklist of macrofungi of Guatemala, with notes on edibility and traditional knowledge  [PDF]
Flores Arzú R,Comandini O,Rinaldi AC
Mycosphere , 2012,
Abstract: Despite its biological wealth, current knowledge on the macromycetes inhabiting Guatemala is scant, in part because of the prolonged civil war that has prevented exploration of many ecological niches. We provide a preliminary literature–based checklist of the macrofungi occuring in the various ecological regions of Guatemala, supplemented with original observations reported here for the first time. Three hundred and fifty species, 163 genera, and 20 orders in the Ascomycota and Basidiomycota have been reported from Guatemala. Many of the entries pertain to ectomycorrhizal fungal species that live in symbiosis with the several Pinus and Quercus species that form the extensive pine and mixed forests of the highlands (up to 3600 m a.s.l.). As part of an ongoing study of the ethnomycology of the Maya populations in the Guatemalan highlands, we also report on the traditional knowledge about macrofungi and their uses among native people. These preliminary data confirm the impression that Guatemala hosts a macrofungal diversity that is by no means smaller than that recorded in better studied neighboring Mesoamerican areas, such as Mexico and Costa Rica.
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