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Aproximadamente 682 registro(s) hasta el momento: (journal)

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Recurso libre

THE “LOVE-HATE” RELATIONSHIP PRESENT IN LIGNOCELLULOSIC MATERIALS
Hubbe, Martin A. - Lucia, Lucian A.

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	The three main types of chemical components in wood are cellulose, hemicellulose, and lignin. These three components have rather different physical and chemical characteristics. In some respects, the three types of materials can be described as “incompatible.” However, most of…
Fecha:	2007-10-17
Recurso:	Bioresources

Recurso libre

LACTOSE TO NATURALIZE TEXTILE DYES
Bianchini, Roberto - Catelani, Giorgio - Frino, Elena - Isaad, Jalal - Rolla, Massimo

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Many natural dyes, for example carminic acid, are soluble in water. We present a simple strategy to naturalize synthetic azadyes through their linkage with lactose to induce their water solubility. The dyeing process of textile fibres then becomes possible in…
Fecha:	2007-10-17
Recurso:	Bioresources

Recurso libre

CUTTING FORCES BY PERIPHERAL CUTTING OF LOW DENSITY WOOD SPECIES
Porankiewicz, Boleslaw - Bermudez E., Julio C. - Tanaka, Chiaki

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	In this paper multifactor non-linear dependencies of cutting forces from several machining parameters for low density wood of Liriodendron tulipifera Linn., known as Yellow Poplar, and Cordia alliodora Ruiz. & Pav., known as laurel blanco wood or capa prieto, were…
Fecha:	2007-10-17
Recurso:	Bioresources

Recurso libre

ABRASIVE WEAR BEHAVIOUR OF BAMBOO (DENDROCALAMUS STRICTUS) POWDER FILLED POLYESTER COMPOSITES
Dwivedi, Umesh K. - Ghosh, Ajoy - Chand, Navin

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	An experimental study was conducted to determine the abrasive wear behaviour of different weight percentage bamboo powder filled polyester composites under the multipass mode. The effect of bamboo powder concentration and sliding distance on the weight loss of composites has…
Fecha:	2007-10-17
Recurso:	Bioresources

Recurso libre

INFLUENCE OF TEMPERATURE ON CRACKING AND MECHANICAL PROPERTIES OF WOOD DURING WOOD DRYING – A REVIEW
Oltean, Laura - Teischinger, Alfred - Hansmann, Christian

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	The occurrence of cracks and loss of mechanical properties are major problems in wood drying, and careful control of drying conditions is necessary in order to avoid this form of defects. Wood drying at different temperatures, especially high temperatures, has…
Fecha:	2007-10-17
Recurso:	Bioresources

Recurso libre

RECYCLING OF CHEMICAL PULP FROM WHEAT STRAW AND CORN STOVER
Tschirner, Urike W. - Barsness, James - Keeler, Tamara

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Handsheets produced from corn stalks and wheat straw soda AQ pulps were recycled in the lab. Pulping of corn stalks resulted in a low pulp yield, low bonding strength, and low recyclability. Conversely, wheat straw fiber had a better yield,…
Fecha:	2007-10-17
Recurso:	Bioresources

Recurso libre

MILL DEMONSTRATION OF TMP PRODUCTION FROM FOREST THINNINGS: PULP QUALITY, REFINING ENERGY, AND HANDSHEET PROPERTIES
Zhu, Junyong - Scott, C.T. - Gleisner, R. - Mann, D. - Dykstra, D. P. - Quinn, G. H. - Edwards, L. L.

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	High-value, large-volume utilization of forest thinning materials from U.S. National Forests is a potentially important contributor to sustainable forest health. This study demonstrated the utilization of wood chips produced from thinnings for the production of thermomechanical pulp (TMP). Both whole-log…
Fecha:	2007-10-17
Recurso:	Bioresources

Recurso libre

EFFECT OF THE MODIFICATION OF LIGNOCELLULOSIC MATERIALS WITH A LIGNIN-POLYMER COMPLEX ON THEIR MULCHING PROPERTIES
Shulga, Galia - Betkers, Talrits - Shakels, Vadims - Neiberte, Brigita - Verovkins, Anris - Brovkina, Julia - Belous, Olga - Ambrazaitene, Dalia - Žukauskaite, Audrone

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	The lignosulphonate/polymer complex, in which the macromolecules of both components are linked together by physico-chemical bonds, has been applied as a new effective lignin-based soil conditioner (LSC). lt has an adhesive affinity both for mineral soil particles and the organic…
Fecha:	2007-10-17
Recurso:	Bioresources

Recurso libre

OBTAINING OF MICROCRYSTALLINE CELLULOSE FROM SOFTWOOD AND HARDWOOD PULP
Laka, Marianna - Chernyavskaya, Svetlana

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Conditions for obtaining microcrystalline cellulose (MCC) by the thermocatalytic method from hardwood (birch, aspen) and softwood (pine) bleached sulphate pulp have been developed. After thermocatalytic treatment, cellulose polymerization degree has decreased to the so-called levelling-off degree of polymerization (LODP), which,…
Fecha:	2007-10-17
Recurso:	Bioresources

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10.

THE STEREOCHEMISTRY AND CONFORMATION OF LIGNIN AS JUDGED BY X-RAY CRYSTALLOGRAPHIC INVESTIGATIONS OF LIGNIN MODEL COMPOUNDS: ARYLGLYCEROL Beta-GUAIACYL ETHERS
Langer, Vratislav - Lundquist, Knut - Parkås, Jim

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	The conformation of a variety of crystalline lignin models representing different diastereomeric forms of structural elements in lignin of the arylglycerol b-guaiacyl ether type has been studied using X-ray crystallography. Based on X-ray crystallographic data sequences of units attached to…
Fecha:	2007-10-17
Recurso:	Bioresources

Recurso libre

11.

Tg AS AN INDEX OF CONVERSION IN PMDI-IMPREGNATED WOOD
Riedlinger, Darren - Sun, Nanjian - Frazier, Charles E.

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	It is well established that the glass transition temperature (Tg) is a sensitive measure of cure in neat thermosets. As cure advances, network mobility declines and the Tg rises in a systematic fashion. This study sought to determine if such…
Fecha:	2007-10-17
Recurso:	Bioresources

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12.

BIO-MODIFICATION OF EUCALYPTUS CHEMITHERMO- MECHANICAL PULP WITH DIFFERENT WHITE-ROT FUNGI
Yang, Qifeng - Zhan, Hauiyu - Wang, Shuangfei - Fu, Shiyu - Li, Kecheng

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Modification of chemithermomechanical pulp (CTMP) by fungal treatment was investigated. Eucalyptus CTMP was treated with three different types of white-rot fungi, namely, Phanerochaete chrysosporium (P.c-1767), Trametes hirsute 19-6 (T.h-19-6), and Trametes hirsute19-6w (T.h-19-6w), under a stationary culture condition. Pulp total…
Fecha:	2007-10-17
Recurso:	Bioresources

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13.

FAST PYROLYSIS – EFFECT OF WOOD DRYING ON THE YIELD AND PROPERTIES OF BIO-OIL
Dobele, Galina - Urbanovich, Igors - Volpert, Aleksandr - Kampars, Valdis - Samulis, Eriks

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	The composition and properties of the products of fast pyrolysis of hardwood, obtained in a two-chamber (drying and pyrolytic) ablation type reactor in the temperature range 450-600ºС, were investigated. It has been found that, upon the additional drying of wood…
Fecha:	2007-10-17
Recurso:	Bioresources

Recurso libre

14.

ENZYMATIC-BASED HYDROLYSIS PROCESSES FOR ETHANOL
Taherzadeh, Mohammad J. - Karimi, Keikhosro

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	This article reviews developments in the technology for ethanol production from lignocellulosic materials by “enzymatic” processes. Several methods of pretreatment of lignocelluloses are discussed, where the crystalline structure of lignocelluloses is opened up, making them more accessible to the cellulase…
Fecha:	2007-10-17
Recurso:	Bioresources

Recurso libre

15.

WHAT HAPPENS TO CELLULOSIC FIBERS DURING PAPERMAKING AND RECYCLING? A REVIEW
Hubbe, Martin A. - Venditti, Richard A. - Rojas, Orlando J.

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Both reversible and irreversible changes take place as cellulosic fibers are manufactured into paper products one or more times. This review considers both physical and chemical changes. It is proposed that by understanding these changes one can make better use…
Fecha:	2007-10-17
Recurso:	Bioresources

Recurso libre

16.

FIBER LOADING OF HARDWOOD PULP BY IN-SITU PRECIPITATION OF ALUMINOSILICATE
Chauhan, Vipul Singh - Singh, Surendra Pal - Bajpai, Pramod K.

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Sodium aluminosilicate has been precipitated in-situ as filler on hard-wood bleached kraft pulp fibers using papermaker’s alum and sodium silicate. The filler was produced in two ways, first in the absence of the fibers and second in the presence of…
Fecha:	2007-10-17
Recurso:	Bioresources

Recurso libre

17.

STUDIES ON THE FUSION OF LIGNINOLYTIC ENZYME cDNAS AND THEIR EXPRESSION
Xie, Jun - Feng, Lei - Xu, Ning - Yang, Jun - Xu, Xiaoli - Fu, Shiyu

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Manganese peroxidase (MnP) and lignin peroxidase (LiP) are two major peroxidases involved in lignin biodegradation. The cDNA mnp1 encoding a kind of MnPs, and cDNA clg5 encoding a kind of LiPs were fused to one cDNA mnp1- clg5 (rmc15) by…
Fecha:	2007-10-17
Recurso:	Bioresources

Recurso libre

18.

CHEMICAL CHARACTERIZATION OF PULP COMPONENTS IN UNBLEACHED SOFTWOOD KRAFT FIBERS RECYCLED WITH THE ASSISTANCE OF A LACCASE/HBT SYSTEM
da Silva, Thiago Alessandre - Mocchiutti, Paulina - Zanuttini, Miguel - Ramos, Luiz Pereira

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Oxidative treatments, without and with assistance of a Laccase-Mediator System (LMS), were characterized in relation to their effects on the chemical composition and strength properties of the fibrous fraction of an unbleached recycled softwood kraft pulp. The LMS, composed of…
Fecha:	2007-10-17
Recurso:	Bioresources

Recurso libre

19.

ISOLATION OF PECTIC ACIDS FROM BLEACHED TMP WATER AND AGGREGATION OF MODEL AND TMP PECTIC ACIDS BY CALCIUM
Saarimaa, Ville J. - Parnovich, Andrey V. - Sundberg, Anna C. - Holmborm, Bjarne R.

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Pectins are important structural elements in spruce fibres. Alkaline peroxide bleaching of spruce thermomechanical pulp (TMP) causes degradation and demethylation of pectins, yielding high-charge-density pectic acids. The pectic acids in fibres contribute strongly to the negative fibre charge, and the…
Fecha:	2007-10-17
Recurso:	Bioresources

Recurso libre

20.

AKD AND ASA MODEL SURFACES: PREPARATION AND CHARACTERIZATION
Lindfors, Juha - Salmi, Jani - Laine, Janne - Stenius, Per

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Model surfaces of alkyl ketene dimer (AKD) and alkenyl succinic anhyd-ride (ASA) were prepared by casting and spin-coating methods. The surface chemical composition and surface topography were investigated by XPS, ellipsometry, AFM and contact angle studies. Spin-coating resulted in layered…
Fecha:	2007-10-17
Recurso:	Bioresources

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21.

THE IMPLEMENTATION OF FINDINGS PUBLISHED IN SCHOLARLY ARTICLES
Hubbe, Martin A.

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Articles published in scholarly journals, such as this one, tend to be mainly addressed to researchers at universities. Industrial follow-up and implementation of results from a scholarly article appears to be the exception, rather than the rule. Research grant specifications,…
Fecha:	2010-07-31
Recurso:	Bioresources

Recurso libre

22.

ANALYSIS OF THE CHEMICAL COMPOSITION AND MORPHOLOGICAL STRUCTURE OF BANANA PSEUDO-STEM
Li, Kun - Fu, Shiyu - Zhan, Haiyu - Zhan, Yao - Lucia, Lucian

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	An analysis of the chemical composition and anatomical structure of banana pseudo-stem was carried out using Light Microscopy (LM), Scanning Electron Microscopy (SEM), and Confocal Laser Scanning Microscopy (CLSM). The chemical analysis indicated there is a high holocellulose content and…
Fecha:	2010-02-02
Recurso:	Bioresources

Recurso libre

23.

MICRODISTRIBUTION OF XYLOGLUCAN IN DIFFERENTIATING POPLAR CELLS
Sandquist, David - Filonova, Lada - von Schantz, Laura - Ohlin, Mats - Daniel, Geoffrey

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Recent studies on the ultrastructure and composition of the gelatinous layer (g-layer) in poplar have reported findings of xyloglucan. Using correlated fluorescence, scanning- and transmission electron micros-copy, we found evidence for xyloglucan present in and surrounding the g-layer, using the…
Fecha:	2010-02-02
Recurso:	Bioresources

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24.

SOIL FUNGI: POTENTIAL MYCOREMEDIATORS OF LIGNOCELLULOSIC WASTE
Saritha, Vara - Maruthi, Y. Avasn

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	The continual expansion of urbanization and industrial activity has led to the accumulation of a large quantity of lignocellulosic residues throughout the world. In particular, large quantities of paper and bagasse are largely produced in Visakhapatnam. In this work we…
Fecha:	2010-02-02
Recurso:	Bioresources

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25.

PREPARATION OF SALT-SENSITIVE AND ANTIBACTERIAL HYDROGEL BASED ON QUATERNIZED CELLULOSE
Yang, Shaoping - Fu, Shiyu - Li, Xeuyun - Zhou, Yiming - Zhan, Hauiyu

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Cellulose hydrogels with quaternary ammonium (QA) groups were prepared via the etherification and cross-linking reaction. The structure of the functional hydrogels with QA groups was confirmed with FT-IR. Differential scanning calorimeter (DSC) analysis indicated that there was a large amount…
Fecha:	2010-02-02
Recurso:	Bioresources

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26.

WHEAT STRAW AS RAW MATERIAL FOR MANUFACTURE OF STRAW MDF
Halvarsson, Sören Bernhard - Edlund, Håkan - Norgren, Magnus

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Wheat straw was used to produce medium-density fiberboard (MDF). The chemical and physical characteristics of fractionated size-reduced wheat straw were investigated. The pH, pH-buffering capacity, ash, and silicon content increased as wheat straw particle size decreased. Ash of the finest…
Fecha:	2010-02-02
Recurso:	Bioresources

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27.

AN EVOLUTION FROM PRETREATMENT TO FRACTIONATION WILL ENABLE SUCCESSFUL DEVELOPMENT OF THE INTEGRATED BIOREFINERY
Bozell, Joseph J.

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	The current state of biorefinery development is focused almost entirely on the production of fuel ethanol. However, an ethanol-centric approach misses the crucial example set by the petrochemical industry. The ability to fractionate a raw material, rather than simply pretreating…
Fecha:	2010-04-28
Recurso:	Bioresources

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28.

UTILIZATION OF WEEDS AND AGRIWASTE BY POPULARIZING HANDPAPERMAKING IN KERALA, INDIA
Nambisan, Padma

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Kerala in south India grows several cash crops such as banana and pineapple, the crop residues of which are sources of natural fibres that can be used in hand papermaking. Kerala, however, does not have a tradition in hand papermaking.…
Fecha:	2010-04-28
Recurso:	Bioresources

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29.

RESEARCH CONCERNING THE USE OF BEECHWOOD PREHYDROLYSATES TO GROW YEASTS
Stanciu, Constantin

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	This paper reports results concerning characterization and improvement of biological quality of beechwood prehydrolysate in order to adapt the Candida Scottii yeast to this nutritive medium. Some difficult aspects caused by the presence of lignin compounds in the prehydrolysate are…
Fecha:	2010-04-28
Recurso:	Bioresources

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30.

SPECIFIC RESISTANCE AND SPECIFIC INTENSITY OF BELT SANDING OF WOOD
Porankiewicz, Boleslaw - Banski, Adrian - Wieloch, Grzegorz

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	This paper examines and discusses the specific belt sanding resistance K (N·cm-2) and specific belt sanding intensity SI (g·cm-2·min-1), for wood of Pinus sylvestris L., Picea abies L., Quercus robra L., Acer pseudoplatanus L., Alnus glutinosa Gaertn., and Populus Nigra…
Fecha:	2010-04-28
Recurso:	Bioresources

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31.

STORAGE OF CHEMICALLY PRETREATED WHEAT STRAW – A MEANS TO ENSURE QUALITY RAW MATERIAL FOR PULP PREPARATION
Leponiemi, Anja Paula Maria - Pahkala, Katri - Heikkilä, Terttu

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	The aim of this study was to evaluate effects of chemical pretreatment and storage on non-wood pulping and on pulp quality. The processes studied were hot water treatment followed by alkaline peroxide bleaching or soda cooking. The results showed that…
Fecha:	2010-04-28
Recurso:	Bioresources

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32.

WATER RETENTION VALUE MEASUREMENTS OF CELLULOSIC MATERIALS USING A CENTRIFUGE TECHNIQUE
Cheng, Qingzheng - Wang, Jinxin - McNeel, Joseph - Jacobson, Peter

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	A centrifugal method has been modified and applied to the assessment of water retention value (WRV) in cellulosic materials. Microcrystalline cellulose (MCC), small particles/fibrils isolated from MCC using high-pressure homogenizer, and pulp fibers saturated in water were centrifuged at different…
Fecha:	2010-04-28
Recurso:	Bioresources

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33.

CHARACTERISTICS OF CORN STALK HEMICELLULOSE PYROLYSIS IN A TUBULAR REACTOR
Lv, Gao-Jin - Wu, Shu-Bin - Lou, Rui

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Pyrolysis characteristics of corn stalk hemicellulose were investigated in a tubular reactor at different temperatures, with focus mainly on the releasing profiles and forming behaviors of pyrolysis products (gas, char, and tar). The products obtained were further identified using various…
Fecha:	2010-07-31
Recurso:	Bioresources

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34.

BACTERIAL CELLULOSE REINFORCED THERMOPLASTIC COMPOSITES: PRELIMINARY EVALUATION OF FABRICATION AND PERFORMANCE
Gu, Ruijun - Kokta, Bohuslav V. - Frankenfeld, Katrin - Schlufter, Kerstin

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Mechanical properties of polyethylene (PE) composites were evaluated as a function of the addition of bacterial cellulose (BC). It was found that BC could improve the mechanical properties of the composites with or without the combination of traditional wood fiber.…
Fecha:	2010-07-31
Recurso:	Bioresources

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35.

ROUGHNESS OF ESTERIFIED EASTERN COTTONWOOD
Farahani, Mohammad Reza M. - Taghizadeh, Fatemeh

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	The aim of this study was to investigate the effect of esterification via acetic or propionic anhydride on the surface roughness of eastern cottonwood. Eastern cottonwood (Populous deltoides) was esterified by using acetic or propionic anhydride without using any solvent…
Fecha:	2010-07-31
Recurso:	Bioresources

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36.

REMOVAL OF ACID-SOLUBLE LIGNIN FROM BIOMASS EXTRACTS USING AMBERLITE XAD-4 RESIN
Schwartz, Thomas James - Lawoko, Martin

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	This paper describes a method for the removal of acid-soluble lignin from acid hydrolyzed hemicelluloses extracted from a mixture of northern hardwood chips, by using Amberlite XAD-4 resin, which was shown to remove 100% of furan derivatives and 90% of…
Fecha:	2010-07-31
Recurso:	Bioresources

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37.

PRODUCTION OF SINGLE CELL PROTEIN, ESSENTIAL AMINO ACIDS, AND XYLANASE BY PENICILLIUM JANTHINELLUM
Rao, Mala B. - Varma, A. J. - Deshmukh, Sumedha S.

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Microbial biomass having 46% crude protein content and enriched with essential amino acids as well as extracellular xylanase activity (100-150 IU/ml) was produced by an efficient fungal strain, Penicillium janthinellum (NCIM St-F-3b). Optimization studies for maximum xylanase and biomass production…
Fecha:	2010-07-31
Recurso:	Bioresources

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38.

DETERMINATION OF CORN STALK FIBERS’ STRENGTH THROUGH MODELING OF THE MECHANICAL PROPERTIES OF ITS COMPOSITES
Rodriguez, Manuel - Rodriguez, Alejandro - Bayer R., Jordi - Vilaseca, Fabiola - Girones, Jordi - Mutje, Pere

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Worldwide cultivation of corn is expanding, due in part to the increasing production of bioethanol. In consequence, huge amounts of corn stalks residues are been produced. Instead of incineration, we transformed the corn stalks into a semichemical pulp and successfully…
Fecha:	2010-07-31
Recurso:	Bioresources

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39.

UTILIZATION OF FIBERS OBTAINED BY PEROXYFORMIC ACID PROCESSING OF BROOM AS REINFORCING AGENTS FOR BIOCOMPOSITES
González, Daniel - Campos, Ana Rita - Cunha, Antonio M. - Santos, Valentin - Parajó, Juan Carlos

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Broom (Cytisus scoparius) samples were processed in media containing formic acid and hydrogen peroxide (MILOX process) to obtain cellulose-enriched solids. The chemical processing of broom samples was assessed by means of a centered, second order factorial design of experiments. Empirical…
Fecha:	2010-07-31
Recurso:	Bioresources

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40.

PRELIMINARY STUDY ON ENHANCED PROPERTIES AND BIOLOGICAL RESISTANCE OF CHEMICALLY MODIFIED ACACIA SPP.
Khalil, H. P. S. Abdul - Bhat, Irshad ul Haq - Awang, Khairul B.

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	A preliminary experimental study was carried out to examine the ability of a chemically modified Acacia spp. to resist biodegradation. The modifications of Acacia mangium and Acacia hybrid were carried out by propionic anhydride and succinic anhydride in the presence…
Fecha:	2010-07-31
Recurso:	Bioresources

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41.

THE INFLUENCE OF THE COUNTER-IONS TO THE CHARGED GROUPS ON THE REFINABILITY OF NEVER-DRIED BLEACHED PULPS
Bäckström, Marie - Hammar, Lars-Åke

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Refining of bleached hardwood pulps and bleached softwood pulps having different counter-ions to the charged groups within the fibres was studied. The results show that an energy reduction of 50% for the hardwood pulps and 20% for the softwood pulp…
Fecha:	2010-07-31
Recurso:	Bioresources

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42.

USE OF IONIC LIQUIDS FOR IMPROVEMENT OF CELLULOSIC ETHANOL PRODUCTION
Wang, Qijun - Wu, Yuanxin - Zhu, Shengdong

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Cellulosic ethanol production has drawn much attention in recent years. However, there remain significant technical challenges before such production can be considered as economically feasible at an industrial scale. Among them, the efficient conversion of carbohydrates in lignocellulosic biomass into…
Fecha:	2010-11-02
Recurso:	Bioresources

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43.

STUDY OF SORPTION PROPERTIES OF CELLULOSE AND ITS DERIVATIVES
Ioelovich, Michael - Leykin, Alex

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	The sorption of vapors by cellulose samples and by some cellulose derivatives was studied at 25 oC. To describe sorption isotherms, a thermodynamic equation was proposed: A=Ao/[1-(RT/g)lnφ], where Ao is maximal sorption value, φ is relative pressure of vapors, and…
Fecha:	2010-11-02
Recurso:	Bioresources

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44.

OFFSET PRINTING BEHAVIOR OF BAGASSE AND HARDWOOD PAPER SHEETS LOADED BY IN-SITU PRECIPITATION
Kumar, Pradeep - Negi, Yuvraj Singh - Singh, Surendra Pal

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Standard handsheets of bleached bagasse and hardwood pulps were prepared with calcium carbonate filler loading by conventional method and by in-situ precipitation. The handsheets were printed with an IGT printability tester. The effect of filler loading by in-situ precipitation on…
Fecha:	2010-11-02
Recurso:	Bioresources

Recurso libre

45.

OIL PALM FIBERS AS PAPERMAKING MATERIAL: POTENTIALS AND CHALLENGES
Wan Daud, Wan Rosli - Law, Kwei Nam

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	This paper reviews the physical and chemical characteristics of fibers from the stem, fronds, and empty fruit bunches of oil palm tree in relation to their papermaking properties. Challenges regarding the use of this nonwood material for papermaking are raised,…
Fecha:	2010-11-02
Recurso:	Bioresources

Recurso libre

46.

EFFECT OF VARIOUS PRETREATMENTS OF OIL PALM EMPTY FRUIT BUNCH FIBRES FOR SUBSEQUENT USE AS SUBSTRATE ON THE PERFORMANCE OF CELLULASE PRODUCTION BY ASPERGILLUS TERREUS
Shahriarinour, Mahdi - Wahab, Mohd Noor Abdul - Ariff, Arbakariya Bin - Mustafa, Shuhaimi - Mohamad, Rosfarizan

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	The possibility of using treated oil palm empty fruit bunch (OPEFB) fibres as substrate for cellulase production by Aspergillus terreus was studied using shaking flask fermentation. The effect of different chemical pretreatments, i.e. formic acid, acetic acid, propylamine, phosphoric acid,…
Fecha:	2010-11-02
Recurso:	Bioresources

Recurso libre

47.

ACOUSTIC PROPERTIES IN ARIZONA CYPRESS LOGS: A TOOL TO SELECT WOOD FOR SOUNDING BOARD
Roohnia, Mehran - Alavi-Tabar, Seyed-Ehsan - Hossein, Mohammad-Ali - Tajdini, Ajang - Jahan-Latibari, Ahmad - Manouchehri, Negin

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	In this study, variation in acoustic properties of Arizona cypress wood was monitored from pith to bark as affected by tapering of the growth ring width. Specific modulus of elasticity, acoustic coefficient, damping, and acoustic conversion efficiency were calculated. It…
Fecha:	2010-11-02
Recurso:	Bioresources

Recurso libre

48.

EQUILIBRIUM ABSORPTION BEHAVIORS AND KINETIC CHARACTERISTICS OF OXYMATRINE ON A SPHERICAL CELLULOSE ABSORBENT
Sun, Yan - Lin, Chun-Xiang - Liu, Ming-Hua - Liu, Yi-Fan

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	An investigation was conducted on the adsorption of oxymatrine (OMT) on a spherical cellulose adsorbent embedded with wattle bark tannin. The results showed that the adsorption of the OMT on the adsorbent was solution pH dependent and the adsorption process…
Fecha:	2010-11-02
Recurso:	Bioresources

Recurso libre

49.

FRACTIONATION OF PULP AND PAPER PARTICLES SELECTIVELY BY SIZE
Laitinen, Ossi Tapio - Kemppainen, Kalle - Stoor, Tuomas - Niinimäki, Jouko

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	A study was made of the classification of pulp, paper, and peat particles by size with a device called a tube flow fractionator. An accurate and simple experimental model was formulated in order to estimate the time required for fractionation,…
Fecha:	2010-11-02
Recurso:	Bioresources

Recurso libre

50.

CATALYTIC HYDROGENATION AND OXIDATION OF BIOMASS-DERIVED LEVULINIC ACID
Gong, Yan - Lin, Lu - Yan, Zhipei

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion
Enlaces:	Levulinic acid (LA), 4-oxo-pentanoic acid, is a new platform chemical with various potential uses. In this paper, catalytic hydrogenation and oxidation of levulinic acid were studied. It was shown from experiments that levulinic acid can be hydrogenated to γ-valerolactone (GVL)…
Fecha:	2010-11-02
Recurso:	Bioresources