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Jornais Acesso aberto

From Henry Stanhope, From Our Own Correspondent, From Fred Emery, By Our Diplomatic Correspondent, From Robert Fisk, By Hugh Noyes Parliamentary Correspondent, By Hugh Clayton, By Pat Healy Social Services Correspondent, From Raymond Perman Labour Staff, By Geraldine Norman Sale Room Correspondent, By Philip Howard, By Alan Hamilton Labour Staff, By Our Labour Correspondent, By Marcel Berlins Legal Correspondent, From a Staff Reporter, By Chistopher Warman Local Government Correspondent, From Stewart Tendler, By Our Political Staff, By Peter Waymark Motoring Correspondent, By Michael Baily Transport Correspondent, From Our Correspondent, By Our Science Correspondent, By John Roper Medical Reporter, By Peter Evans Home Affairs Correspondent, By a Staff Reporter, By Christopher Warman, From George Clark Political Staff, From Our Political Staff, From Roger Berthoud, From Richard Wigg, From Frank Vogl, From Patrick Brogan, From Peter Strafford, From Victoria Brittain, From Michael Knipe, From Paul Martin, From Anthony Thomas US Economics correspondent, From Charles Hargrove, From Nicholas Ashford, By Michael Hatfield Political Staff, From Michael Binyon, By Louis Heren, From Alan McGregor, By Geoffrey Green Football Correspondent, By Peter West Rugby Correspondent, By Rex Bellamy, By Rex Bellamy Tennis Correspondent, By Michael Phillips Racing Correspondent, By Jim Railton, By Neil Allen Boxing Correspondent, Sheridan Morley, Lord Butler, Peta Fordham, Edward Candy, Tony Aldous, Geoffrey Weston, Edward Mortimer, Iverach McDonald, H. R. F. Keating, Ion Trewin, Jacky Gillott, Stanley Sadie, Alan Blyth, Irving Wardle, Richard Maylan, Malcolm Rudland, Charles Lewsen, Joan Chissell, Bernard Levin, Prof Richard Rose, Hugh Hanning, PHS, Ronald Butt, NEVILLE WILLIAMS, , W. C. G. SLATTER, , AMIR KHOSROW AFSHAR, , MARGARET BROWN, , HORST FERDINAND, , JAMES GRIFFITHS, , HUGH DYKES, , ALAN HASELHURST, , FREYA STARK, , H. BROOKE, , DIPAK NANDY, , M. R. APTED, , JOHN WHITMARSH, , I. N. DUNCAN WALLACE, , JOHN GORST, , BRIAN ALDERSON, , JONATHAN STANFIELD, , FRANK CARR, , From John Chartres, By Tim Devlin Arts Reporter, Two colleagues, A Correspondent, A friend, By Melvyn Westlake, By R. W. Shakespeare, By John Whitmore, From Anthony Thomas, By Malcolm Brown, By Our Economics Editor, By Peter Jay, By Our Financial Staff, By Peter Hill, From Robert Prinsky, By Clifford Webb, By Alan Hamilton, From David Bonavia, From Ian Morison, BARBARA MAUDE, , JUNE PIPPIN JONES, , ROLAND GELATT, , HARRY G. JOHNSON, , E. D. WILSON, , BY THE FINANCIAL EDITOR, DB, RS, By Patricia Tisdall, By Arthur Reed, By Dennis Dwyer, Eynon Smart, From Peter Hazelhurst, Christopher Wilkins, Andrew Wilson, By John Woodland, Peter Waymark, by Michael Frenchman, by Robert Dervel Evans, by Robin Chapman, by Dennis Topping, by John Woodland Commodities Editor, by John Mulholland, by Eric Gibbins, by Peter Hill, by Stephen Edward Murphy, by Alfredo Moutinho dos Reis, by G. J. Cook, D.T.,

... is the world's second largest producer of hardboard. It will have a production, London busmen seek ...

1973 - Gale Group | TDA

Artigo Revisado por pares

J.F. Hunt, Charles B. Vick,

... waste stream could potentially be used in structural hardboard products. This study compares strength properties and processing variables of wet-formed high-density hardboard panels made from recycled old corrugated container (OCC) fibers and virgin hardboard fibers using continuous pressure during drying. The results ... times the stiffness of panels made from virgin hardboard fibers. For commercial hardboard, panels made from OCC fibers had 2.5 ... 2 times the strength of standard and tempered hardboards, respectively, and for the American National Standards Institute ( ...

Tópico(s): Advanced Cellulose Research Studies

1999 - Forest Products Society | Forest Products Journal

Artigo Revisado por pares

J.F. Hunt, Charles B. Vick,

... from industrial fiberglass insulation trim waste with commercial hardboard fibers and with recycled corrugated container fibers to improve the properties of a structural hardboard-like panel. This study also investigated the effectiveness ... agent; and 3) wood fiber type (steam-exploded hardboard or recycled corrugated). Also, panel strength and linear ... of the experimental boards were compared with commercial hardboard. As applied, the coupling agents did not improve ... panels exceeded minimum strength and dimensional requirements for hardboard; however, mechanical properties decreased as fiberglass loading level ...

Tópico(s): Material Properties and Processing

2004 - Forest Products Society | Forest Products Journal

Artigo Revisado por pares

Lidija Murmanis, John A. Youngquist, Gary C. Myers,

Wet-formed and dry-formed aspen fiber hardboards are examined by transmission electron microscopy to obtain information on the hardboard internal structure and fiber-resin interactions. These factors, when related to strength and dimensional properties of hardboards, may be helpful in determining hardboard quality and suitability for structural use. During hardboard manufacturing, the wood cells break apart at the ... medium- and high-density wet- and dry-formed hardboards. In wet-formed boards the resin (which has ...

Tópico(s): Advanced Cellulose Research Studies

1986 - Society of Wood Science and Technology | Wood and Fiber Science

Jornais Acesso aberto

By GUY RAIS, T. A. SANDROCK and JOHN WEEKS, By COLIN BRADY, By STEPHEN BARBER in Washington, By TONY ALLEN-MILLS, By BLAKE BAKER Industrial Correspondent, By BALRAM TANDON in New Delhi, By Our Paris Staff, By MAURICE WEAVER, Industrial Staff, By ROLAND GRIBBEN Business Correspondent, By PETER PRYKE, By JOHN GRIGSBY, Local Government Correspondent, By ROBIN STRINGER, Arts Staff, By TERENCE SHAW Legal Correspondent, By AMIT ROY, By ADRIAN BERRY Science Correspondent, By IAN BALL in New York, By JOHN MYERS in Geneva, By RAY KENNEDY, By NIGEL WADE, By RICHARD BEESTON in Moscow, By MICHAEL FIELD, By ALAN OSBORN, Common Market Correspondent, , By DAVID SHEARS in Bonn, By MAIER ASHER, By Our Staff Correspondent, By JAMES ALLAN, By TIM BROWN, By ERIC RORICH, By M. AFTAB, By HENRY MILLER, By DAVID LOSHAK, Social Services Correspondent, By ADRIAN BERRY, Science Correspondent, By JOHN IZBICKI Education Correspondent, By Our Naval Correspondent, By Our Diplomatic Correspondent, By ROLAND GRIBBEN, Business Correspondent, By Our Political Staff, Daily Telegraph Reporter, By ROBERT BEDLOW Transport Correspondent, By Our Arts Staff, By Our Transport Correspondent, By Our Property Market Correspondent, JOHN LANGLEY, By SEAN DAY-LEWIS, By ERIC SHORTER, GILLIAN REYNOLDS, By JOHN BARBER, D.F.B., A. E. P., Peter Simple, Story by SERENA SINCLAIR, By Brenda Parry, By Avril Groom, By Margot Thompson, By PETER BLAKER, MP, PETERBOROUGH, MARCUS BINNEY, JOHN PACEKARD, P. MASON, NEVILLE ARMSTRONG, PATRIC NETSCHER, J. D. G. LINEHAN, (Rev.) DEREK COLE, REGINALD EYRE, J. COPPINS, GEOFFREY WOOD, ANTHONY KNIGHT, , By Our Estates Correspondent, By Our Diplomatic Staff, By JOHN WILLIAMS, By Our Local Government Correspondent, By ALAN OSBORN in Brussels, By GUY RAIS, By FRANCES GIBB Art Sales Correspondent, By ROLAND GRIBBEN, By JAMES SRODES in Washington, By JOHN PETTY, By ALAN OSBORN, By ARTHUR BOWERS Property Market Correspondent, By MICHAEL MELFORD in Perth, By DAVID WIGGINS, By HOTSPUR (Peter Scott), By JOHN REASON, By DONALD SAUNDERS, By CHRISTINA WOOD, By COLIN DRYDEN, By BILL HARRISON, By GODFREY BROWN Agricultural Correspondent, By Our Lisbon Correspondent,

... Labour's N E C, Navy Using Russian Hardboard, Union Action, Britain Backs Ems Role For Food, ...

1978 - Gale Group | TDA

Artigo Revisado por pares

P.E. Steinmetz, Charles W. Polley,

... and dimensional stability of high-density, dry-formed hardboard were investigated. This approach was taken to produce hardboards with increased strength for use as structural components. ... was undertaken to establish the benefits of forming hardboard with the majority of the fibers in one ... of the type commonly used for dry formed hardboard was sprayed on the fiber in a rotating ... with all fibers randomly oriented as in conventional hardboard (50 percent orientation). 3 Three boards of each ...

Tópico(s): Forest Biomass Utilization and Management

1974 - Forest Products Society | Forest Products Journal

Artigo Revisado por pares

John A. Youngquist, Gary C. Myers, Lidija Murmanis,

... uniformity of resin deposition on or through the hardboard product. Presently, destructive testing of the hardboard, by measuring its internal bond (IB) strength, is ... wet- and dry-formed medium- and high-density hardboards formed under varying conditions of pre- and post- ... were effective ways for improving resin distribution in hardboard furnish. Our microscopic technique also showed that uniform distribution of the resin throughout the hardboard produced boards with the highest IB strengths. This ...

Tópico(s): Integrated Circuits and Semiconductor Failure Analysis

1987 - Society of Wood Science and Technology | Wood and Fiber Science

Artigo Revisado por pares

Sara González‐García, Gumersindo Feijóo, Carol Heathcote, Andreas Kandelbauer, Marı́a Teresa Moreira,

... composites such as plywood and wet-process fiberboard (hardboard). The synthetic resins used in their manufacture come ... of a new process for the manufacture of hardboards manufacture, considering the use of a two-component ... The study covers the life cycle of green hardboards production from a cradle-to-gate perspective, analysing in detail the hardboard plant and dividing the process chain in three ... and swelling properties similar to those of conventional hardboard.

Tópico(s): Microplastics and Plastic Pollution

2010 - Elsevier BV | Journal of Cleaner Production

Artigo Revisado por pares

V. Eroğlu, A. M. Saatçi,

... reuse of pulp and paper industry sludges in hardboard production are explained. Data obtained from pilot and ... industry as an additive in the production of hardboard is presented. An economic analysis of the reuse of pulp and paper primary sludge in hardboard manufacturing is given. The quality of the hardboard produced is tested and compared with the qualities of the hardboard produced by the same plant before the addition of primary sludge. The hardboard with primary sludge additive has been used in ...

Tópico(s): Recycling and utilization of industrial and municipal waste in materials production

1993 - Pergamon Press | Water Science & Technology

Artigo Revisado por pares

Lidija Murmanis, Gary C. Myers, John A. Youngquist,

... explore the internal structure and resin distribution in hardboards. The technique will enable us better to understand ... for preparing 10- to 15-μm sections of hardboards with a steel knife on a sliding microtome. ... near-ultraviolet light, allowed a clear visualization of hardboard internal structure and resin distribution through the board thickness. We examined wet-formed and dry-formed hardboard samples. Wet-formed high-density and medium-density ...

Tópico(s): Wood Treatment and Properties

1986 - Society of Wood Science and Technology | Wood and Fiber Science

Artigo

Xinxin Ye, James Julson, M. Kuo, David E. Myers,

... adhesive with a conventional urea-formaldehyde resin. The hardboard propertiesevaluated were thickness swell, modulus of rupture, modulus ... mechanical and water resistance properties for hardboardproduction. However, hardboard made from wheat straw fiber and soy straw ... had comparable mechanical properties butinferior water resistance to hardboard made from wood fiber. Wheat straw fiber and ... wood fiber forhardboard production. The thickness swell of hardboard increased with increasing agrifiber composition. Fiber, rather thanadhesive, ...

Tópico(s): Lignin and Wood Chemistry

2005 - | Transactions of the ASAE

Artigo Revisado por pares

Elisabeth Dolezel‐Horwath, Tanya Hutter, Rudolf W. Kessler, Rupert Wimmer,

... feedforward control in the production of wet-processed hardboards. For this purpose online UV–vis–NIR spectroscopy was installed on a full-scale industrial hardboard production to collect spectra from fibre materials, intermediate fibremats and from final hardboards. The acquired spectra were subjected to following chemometric ... technological data that were determined on the final hardboards. The groupings according to different raw material types, ...

Tópico(s): Meat and Animal Product Quality

2005 - Elsevier BV | Analytica Chimica Acta

Artigo Revisado por pares

TP Sathishkumar,

... were compared with traditionally available materials like plywood, hardboard sheet, paper board and twisted paper according to ... fiber-reinforced polyester composites. The storage modulus of hardboard sheet and KMnO 4 -treated S. ehrenbergii fiber- ... was minimum and peak width was maximum for hardboard sheet and KMnO 4 -treated S. ehrenbergii fiber- ... composites. The thermal stability and hardness of the hardboard sheet were the highest compared to S. ehrenbergii ... 4 -treated S. ehrenbergii fiber-reinforced composites and hardboard sheet were lowest compared with the other materials.

Tópico(s): Wood Treatment and Properties

2014 - SAGE Publishing | Journal of Reinforced Plastics and Composites

Artigo Revisado por pares

Gary C. Myers, John B. Crist,

... raw material source for the manu­ facture of hardboard. All aboveground material was chipped, and a portion ... single­ disk refiner, and medium- and high-density hardboards were made from the pulps by both the ... resin contents were used in each type of hardboard manufactured. Hardboards were evaluated for strength properties and dimension change, ... cultured Populus raw material is suitable for manufacturing hardboards. Manufacturers of hardboard, like those in other forest products industries, will ... determine if SRIC material is suitable as a hardboard furnish. Furthermore, large quantities of bark in the ...

Tópico(s): Forest Management and Policy

1986 - Forest Products Society | Forest Products Journal

Artigo

Fardous Mobarak, Abd‐Alla M. A. Nada, Yehia Fahmy,

Abstract The suitability of rice straw for hardboard making was studied. Both the mechanical and semichemical pulping methods were investigated. It was found that addition of a relatively high amount of resin (2–3 %) is essential if hardboard—comparable to average commercial samples made from wood— ... the resulting semichemical pulp was not suitable for hardboard.

Tópico(s): Lignin and Wood Chemistry

1975 - Wiley | Journal of Applied Chemistry and Biotechnology

Artigo

M.M.S. El-Morsy,

... was found that it is possible to obtain hardboard of acceptable properties from the mechanically pulped rachises ( ... mechanical defiberisation resulted in improvement of the obtained hardboard properties. The quality of hardboard depends on the pretreatment conditions.

Tópico(s): Agricultural Engineering and Mechanization

1980 - Elsevier BV | Fibre Science and Technology

Artigo Revisado por pares

V. Eroğlu, İzzet Öztürk, G. Ubay, İbrahim Demir, E. N. Korkurt,

... anaerobic pre-treatment for the effluents from a hardboard and laminated board industry. The problems associated with the treatment of hardboard mill wastewaters using activated sludge process have been ... a feasible option for waste management of the hardboard mill effluents.

Tópico(s): Anaerobic Digestion and Biogas Production

1994 - Pergamon Press | Water Science & Technology

Artigo Acesso aberto Revisado por pares

Nil Sahal, Michael Lacasse,

... derivation of a water entry function of a hardboard siding-clad wood stud wall assembly. Water entry ... an experimental work was conducted in which the hardboard siding-clad wood stud wall specimen was subjected ... of estimating the water entry loads of the hardboard siding-clad wood stud wall assembly located in ...

Tópico(s): Hygrothermal properties of building materials

2005 - Elsevier BV | Building and Environment

Artigo Revisado por pares

Poo Chow, Zhaozhen Bao, John A. Youngquist, Roger M. Rowell, James H. Muehl, Andrzej M. Krzysik,

... on mechanical and physical properties of dry-process hardboard made from aspen and southern pine were investigated. ... MOR) and modulus of elasticity (MOE) of the hardboard specimens were decreased due to the fiber acetylation. ... wax contents significantly affected the LE value of hardboard specimens in this study.

Tópico(s): Material Properties and Processing

1996 - Society of Wood Science and Technology | Wood and Fiber Science

Artigo Acesso aberto Revisado por pares

Wayan Darmawan, Chiaki Tanaka, Hiroshi Usuki, Tadashi Ohtani,

... of coated carbide tools when grooving various density hardboards and wood-chip cement boards. Work materials of ... normal force and noise level when cutting both hardboard and wood-chip cement board of high density ... board increased more rapidly than that of the hardboard with increasing densities. Though the coated carbide tools ... low-density wood-chip cement board than with hardboard, their normal force and noise level were always ...

Tópico(s): Advanced materials and composites

2001 - Springer Science+Business Media | Journal of Wood Science

Artigo Revisado por pares

Monlin Kuo, Daniel Adams, Deland J. Myers, Daniel J. Curry, Howard Heemstra, John L. Smith, Yilin Bian,

... study was conducted to determine comparative properties of hardboards and medium-density fiberboards (MDF) made from fiber ... fibers bonded with synthetic resins and soy protein. Hardboards and MDF were made at wood/agricultural fiber ... and 0/100 in weight percentages. Wet-formed hardboards (S1S) bonded with 2 percent soy protein were ... 2 percent phenol-formaldehyde resin (PF). Dry-formed hardboards (S2S) and MDF bonded with 4 percent PF ...

Tópico(s): Forest Biomass Utilization and Management

1998 - Forest Products Society | Forest Products Journal

Artigo Brasil Produção Nacional Revisado por pares

Reinaldo Morábito, Valdir Garcia,

... rectangular plates into smaller ones in a Brazilian hardboard industry. The problem is to determine the best ... described for the cutting stock formulation of the hardboard industry. Each phase of the procedure is modeled ... well as an actual problem derived of the hardboard industry under consideration.

Tópico(s): Computational Geometry and Mesh Generation

1998 - Elsevier BV | Computers & Operations Research

Artigo Acesso aberto

Ignacio Pérez Pérez, A.R. Pasandín, Jorge C. Pais, Paulo A. A. Pereirâ,

... waste streams are produced during the production of hardboard panels. This paper analyses the feasibility of using a lignin-containing waste from the hardboard industry in asphalt binders. It would contribute to ... economic and social benefits. The waste from the hardboard industry was not subjected to any transformation i. ... offer technical support to value this waste from hardboard production, without the need for subsequent transformations.

Tópico(s): Infrastructure Maintenance and Monitoring

2019 - Springer Science+Business Media | Waste and Biomass Valorization

Artigo Revisado por pares

Hüsnü Yel, Ayfer Dönmez Çavdar, Hülya Kalaycıoğlu,

The residues of tea factory and waste hardboards are generally incinerated without utilizing their heat performances. The first objective of this study was to manufacture cement bonded particleboard using residues of tea factory (Camellia sinenses L.) and waste hardboards. The second objective was to evaluate modulus of ... at five lignocellulosic mixture ratios of poplar chips/hardboards/tea residues (1/0/0; 1/1/0; ...

Tópico(s): Lignin and Wood Chemistry

2011 - Trans Tech Publications | Key engineering materials

Artigo Revisado por pares

R.N. Hawke, Baosheng Sun, M.R. Gale,

... 8, 15 and 22%) on strength properties of hardboard bonded at a 3% diphenylmethanediisocyanate adhesive level, and compares them to hardboard bonded at phenol-formaldehyde adhesive levels of 3 ...

Tópico(s): Wood Treatment and Properties

1992 - Forest Products Society | Forest Products Journal

Artigo Revisado por pares

Olle Carlsson,

... its origin in quality problems faced in a hardboard mill. The quality control of hardboard includes the measurement of several quality characteristics, where ... the density. Samples of sheets are taken from hardboard lots and a lot is accepted if both ...

Tópico(s): Industrial Vision Systems and Defect Detection

1992 - Elsevier BV | International Journal of Production Economics