Relevant bibliographies by topics / Wool production

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Wool production'

Author: Grafiati
Published: 4 June 2021
Last updated: 26 July 2024

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Journal articles on the topic "Wool production"

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Russel, A. J. F., H. M. Sangster, G. T. Gittus, and Hilary Redden. "Fine wool production from UK hill land resources." Proceedings of the British Society of Animal Production (1972) 1994 (March 1994): 216. http://dx.doi.org/10.1017/s0308229600027604.

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Wool is the most neglected agricultural commodity in the UK. In many sheep enterprises the returns from wool represent less than 2% of the gross income and in some cases the value of the wool produced is less than the cost of shearing. Wool production, however, represents a potential avenue for agricultural diversification and, being a non-food commodity and suited to production in the Less Favoured Areas, accords with the agricultural policies of the UK government and the EU.Significant increases in return from wool can come only from improvements in quantity and/or quality, two traits which in most breeds are negatively correlated. The most important determinant of wool quality, is fibre diameter. An analysis of prices of wools of different qualities over a four year period (1987-1990 inclusive) showed that the relationship between these variables could be described by the equation
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McKay, J. C. "Fibre production in angora rabbits." Proceedings of the British Society of Animal Production (1972) 1990 (March 1990): 67. http://dx.doi.org/10.1017/s0308229600018481.

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Angora rabbits carry a mutation.which confers continuous wool growth. The use of the wool in textiles was first recorded in 1706 in the U.K. and western Europe dominated world production until the the early 20th century. China now produces 60 percent of the world's 4,000 tonne annual crop.Genetic and nutritional improvements have led to a five-fold increase in annual yields over the last 40 years. Current commercial strains produce up to 1.5 Kg of wool per year from rabbits weighing 4 Kg. To maintain such yields requires concentrate diets with protein contents of at least 16 percent and cystine+methionine contents of 0.8 percent.The wool may be sheared or plucked and consists of three fibre types. The wool hairs (80 percent of the fleece) are among the finest animal fibres at 8-12 microns. They have a hollow medulla which gives important properties of low density (1.23 grams per ml versus 1.3 for sheep wool) and high thermal insulation (2-3 times that of sheep wool).
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Williams, A. J. "The Efficiency of Wool Production." Outlook on Agriculture 15, no. 3 (September 1986): 141–50. http://dx.doi.org/10.1177/003072708601500307.

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The efficiency of wool production – which in the context of this review means largely the production of fine wool in Australia, the largest grower – depends on local conditions and management systems. The main factors, other than genetic, are climatic and edaphic; the proportion of herbage utilized by the sheep; and the proportion of ingested herbage converted into wool.
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Vacula, Miroslav, Martin Klvač, Robert Mildner, and Šárka Keprdová. "Parameters of Cement Bonded Particle Boards Modified with Stone Wool Fibre." Advanced Materials Research 923 (April 2014): 195–201. http://dx.doi.org/10.4028/www.scientific.net/amr.923.195.

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The contribution deals with possibilities of using waste from the production of stone wool for modification of the existing composition of cement boards . Waste - the fibres from the production of stone wool - was used as an alternative to the standardly used wooden filler (chips, sawdust). The waste was tested in laboratory and then added to the mixture for the production of cement-bonded particleboards as a substitute for wood filler. The physical and mechanical properties of laboratory-made boards with a modified recipe were monitored.
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Papa, Lumturi, and Kristaq Kume. "SHEEP WOOL PRODUCTION IN ALBANIA." Macedonian Journal of Animal Science 2, no. 2 (2012): 143–48. http://dx.doi.org/10.54865/mjas1222143p.

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Denney, GD, HI Ridings, and KJ Thornberry. "An analysis of the variation in wool production between commercial properties from a survey of a wheat-sheep shire in New South Wales." Australian Journal of Experimental Agriculture 30, no. 3 (1990): 329. http://dx.doi.org/10.1071/ea9900329.

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A survey of Merino breeding properties in the Weddin Shire of New South Wales was used to relate the variation in wool production among properties to physical and management factors. Clean wool production averaged 3.15 kg per sheep and showed little variation between the eastern, central and western portions of the shire. However, clean wool production per hectare was greatest in the eastern portion where rainfall, pasture improvement and stocking rate were highest. Overall, ewes produced 88% as much wool as the wethers but variation was great, with 23% of the properties surveyed producing more wool per sheep from their ewes. The difference in productivity for properties in the highest and lowest quartiles was 71% when ranked on clean wool production per sheep. The difference was 184% when ranked on clean wool production per hectare, and even though stocking rate more than doubled, individual productivity increased. Similar differences in quartile production were observed in each portion of the shire. Regression analysis was used to test the importance of 9 physical and 10 management factors as determinants of the variation in clean wool production between properties. Four factors (stocking rate, managerial assessment, sheep strain/bloodline and location within shire) accounted for 74% of the variance in wool production per hectare, but after adjusting for the time of shearing, only 16% of the variance in wool production per sheep was explained. In a more specific analysis of wool production of the properties' ewe flock, 42% of the variance was accounted for by the source of genetic material, stocking rate, pasture improvement, time of lambing, the proportion of Merino ewes and an assessment of managerial ability. Research workers considering on-farm experimentation in wool production should be aware that large productivity differences can occur between nearby properties. Therefore, treatments should be allocated to properties based on known wool production. Further, results obtained from either the ewe, wether or hogget flocks may have application to only that class of sheep because of the large differences in commercial management imposed on them.
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Enciu, Ana, Camelia-Zoia Zamfir, Elena Ilisiu, and Alina Nicolescu. "Evaluation of the Wool Production on Romanian Sheep Breeds." Annals of "Valahia" University of Târgovişte. Agriculture 15, no. 2 (October 1, 2023): 1–6. http://dx.doi.org/10.2478/agr-2023-0010.

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Abstract Sheep breeding is a traditional activity in Romania and wool production has been for a long period the main resource for the farmers’ prosperity. The opportunity of this study was generated by two main aspects: the change of the exploitation directions of sheep towards milk and meat production, which contributed to the lack of interest in selection and breeding for wool and to the reduction of the productive level and quality parameters of the wool; the absence of a national standard for classifying raw wool adapted to the current breeds structure, the conditions of sheep farming and the market requirements for this animal product An extensive study was carried out over 5 years on flocks of sheep belonging to the main local breeds Merinos de Palas, Tsigaie, Tsurcana, the newly created breeds at ICDCOC Palas Constanta respective Palas Meat Breed, Palas Milk Breed, Palas Prolific Breed as well as on some hybrids obtained through crossbreeding of new breeds with imported sheep breeds specialised for meat production (Texel and Rouge de l’ Ouest). The main goals of this study were: to establish the average level of wool production, the limits of variation and the potential for selection for wool quantity, by individual weighing of the wool fleeces harvested during the shearing season; to evaluate the wool quality level in the flocks analysed on the basis of the objective determination, by laboratory analysis on randomly collected samples, of the average fibre diameter, relative length of the staples, individual fibre length, degree of crimp, degree of impurity and the limits of variation of these quality parameters. This paper presents a summary of the values obtained for the quantity of raw wool and the fineness of wool as an essential quality parameter for the classification and valorisation of this natural resource. The results obtained in the study revealed in general a large variability in the productivity level of local sheep breeds and their hybrids with specialised imported breeds. The existence in the analysed herds of a percentage of 40-50 % of sheep performing above the flocks average (plusvariants) shows a potential for selection for the quantitative level of wool production. Thus, for these selected flocks (lines) an additional 10.23 ≈ 24.09 % wool production can be obtained compared to the averages levels. In terms of average fineness the analysis of the data shows that : the Palas Merino sheep, fall into the category of fine wool breeds; the three new sheep breeds created at ICDCOC Palas and the Tsigaie breed belonging to the Reghin - Mures Experimental Base have semi-fine wool (fiber diameter over 25 microns); the flock of White Tsurcana breed from the Bilciuresti - Dambovita Experimental Base falls into the category of sheep with semi coarse - coarse wool. The range of variation in diameter was very wide for all the breeds analysed. Thus in the Palas Merino breed differences of 5-7.5 μm between the maximum and minimum diameter measured represent according to the Bradford classification (English system) a difference of 7 fineness classes . The Tsigai breed has also a large uneveness of this parameter, CV over 20 % in rams and sheep yearlings. The analysis of the data on wool diameter revealed that more than 40% of the studied sheeps had above-average fineness, they could constitute selected flocks (lines) with higher values of the main wool quality parameter that determines the market value. Thus an increase in wool fineness of 3.63 ≈ 11.52 % can be achieved within a selected flock . The results presented showed that, under the current conditions of breeding and exploitation of sheep in the analized flocks, there is a potential of selection for wool production and for fibre diameter as the main quality parameter . Also, on the basis of the analysis carried out on the grading/classing/sorting of wool worldwide and the results obtained within this study, proposals were made to improve the quantity and increase the commercial value of wool production obtained from the sheep breeds reared in Romania.
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Ntsiapane, A. D., J. W. Swanepoel, A. E. Nesamvuni, and T. O. Ojo. "Assessing the efficiency of smallholder wool farmers in the changing paradigms of the Free State province of South Africa." South African Journal of Animal Science 53, no. 1 (April 18, 2023): 125–32. http://dx.doi.org/10.4314/sajas.v53i1.14.

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The South African population is predicted to increase to almost 66 million by 2030. This necessitates paradigm shifts to improve agricultural efficiency. However, South African wool production has continuously declined over the past three decades. The study analysed the efficiency of smallholder wool farmers and identified the determinants of technical inefficiency in wool production in Thaba ‘Nchu and Botshabelo in the Mangaung Metro (Free State province, South Africa). A multistage sampling technique was used to select 351 participants. A stochastic frontier model was employed to analyse the efficiency of wool farmers. The results indicate that increases in feed and veterinary costs negatively affect the efficiency of smallholder wool production. Wool quality and use of social media were found to have a negative and statistically significant influence on the variation in the inefficiency of wool production (i.e., as these variables increase, inefficiency decreases). Poor extension services and poorly managed farmers’ associations increase the inefficiency of smallholder wool producers. Furthermore, only 7% of smallholder farmers were efficient, and most smallholder wool farmers were not producing at full capacity; there is thus much room to improve production. To increase the efficiency of smallholder wool production in Mangaung, it is recommended that farmers are trained to improve the quality of their wool and, consequently, increase the wool price. Further recommendations include improvement of extension services, better management of farmers’ association
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Charlick, AJ, and GW Arnold. "Effect of bearing and rearing lambs on Merino wool production." Australian Journal of Experimental Agriculture 30, no. 5 (1990): 591. http://dx.doi.org/10.1071/ea9900591.

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Over a 15-year period, the greasy fleece weights of medium-wooled Merino ewes lambing in June in a 625 mm winter rainfall area in south-western Australia were examined in relation to the numbers of lambs born and reared. The ewes were set stocked at 6.7 ewes/ha on annual pasture. During this period selection for increased wool production was undertaken. A generalised linear model was used to assess the effects of bearing and rearing lambs. There was a significant (P<0.05) year x lambing interaction because of a different response over years 1-7 from that over years 8-15. Over years 1-7 when dry ewes cut an average of 4250 g greasy wool, ewes raising single lambs cut 185 g less wool (P<0.001); the few that raised twins cut a similar amount of wool to dry ewes. In years 8-15, wool production of dry ewes increased to an average of 5524 g. Ewes that lambed but lost their lambs cut 386 g less wool, those raising single lambs 652 g less wool, and those raising twins 846 g less wool. Over years 8-15, a second flock in which some ewes lambed twice a year was examined. These ewes received supplementary feed for out of season lambing. Those that raised 2 single lambs in a year cut 1120 g less wool than dry ewes.
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SEN, R. N. "Production of Aniline Black on Wool." Journal of the Society of Dyers and Colourists 32, no. 10 (October 22, 2008): 244–45. http://dx.doi.org/10.1111/j.1478-4408.1916.tb00898.x.

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Dissertations / Theses on the topic "Wool production"

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Chen, Yun-Ju (Kelly). "Consumer preferences for wool production attributes." Diss., Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/1035.

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Trdic, Francelj. "Monitoring mineral wool production using computer vision." Thesis, University of Hertfordshire, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338593.

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Christiansen, Carol Anne. "Primitive wool and early textile production in Shetland." Thesis, University of Manchester, 2003. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.666891.

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Devaux, Caroline Alexandra. "Wool Production, Systematic review of Life Cycle Assessment studies." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-247901.

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Wool is often being marketed as sustainable. However, when looking at LCA studies, results can be significantly different from one study to another and wool sometimes shows higher impacts than other fabrics. Based on a comprehensive literature review, this thesis aims at understanding the key environmental impacts of wool production and assessing the influence of main methodological choices on wool LCA results. In particular, the choice of the scope, allocation method and further considerations on water consumption and land use indicators have a great significance on the results of the studies. In order to provide with a fair representation of wool environmental impacts, the whole life-cycle should be taken into account, and methodological choices, such as the scope definition and allocation methods are to be clearly stated. The current tools that are the most widely used in the textile industry to rank fibres according to their sustainability performance are not suitable for wool due to unresolved methodological issues. Indeed, the impact categories that are taken into account in those tools are disadvantageous for wool compared to other alternative fibres, especially regarding water consumption and land use. This thesis also explores the construction of a single score based on the eco-costs of environmental impacts as a more suitable option to build a representative tool.
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Ruto, Christopher Kiptanui. "Lamb and wool production in an organic farming system." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3839.

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Thesis (M.S.)--West Virginia University, 2005
Title from document title page. Document formatted into pages; contains vii, 51 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 46-51).
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Fitzgerald, Maria Amelia. "Textile production in prehistoric and early medieval Ireland." Thesis, Manchester Metropolitan University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326250.

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Campbell, Angus John Dugald. "The effect of time of shearing on wool production and management of a spring-lambing merino flock /." Connect to thesis, 2006. http://eprints.unimelb.edu.au/archive/00003254.

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Róbertsdóttir, Hrefna. "Wool and society : manufacturing policy, economic thought and local production in 18th-century Iceland /." Göteborg : Lund : Makadam, Centrum för Danmarksstudier, 2008. http://bilder.fsys.se/9789170610561.jpg.

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Kabir, Maryam M. "Bioprocessing of Recalcitrant Substrates for Biogas Production." Doctoral thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-597.

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The application of anaerobic digestion (AD) as a sustainable waste management technology is growing worldwide, due to high energy prices as well as increasingly strict environmental regulations. The growth of the AD industry necessitates exploring new substrates for their utilisation in AD processes. The present work investigates the AD of two recalcitrant biomass: lignocelluloses and keratin-rich residues. The complex nature of these waste streams limits their biological degradation; therefore, suitable pre-processing is required prior to the AD process.In the first part of the study, the effects of organic solvent pre-treatments on bioconversion of lignocelluloses (straw and forest residues) to biogas were evaluated. Pre-treatment with N-methylmorpholine-N-oxide (NMMO) resulted in minor changes in the composition of the substrates, while their digestibility significantly increased. Furthermore, due to the high cost of the NNMO, the effect of pre-treatment with the recycled solvent was also explored. Since it was found that the presence of small traces of NMMO in the system after the treatment has inhibitory effects on AD, pre-treatments of forest residues using other organic solvents, i.e. acetic acid, ethanol, and methanol, were investigated too. Although pre-treatments with acetic acid and ethanol led to the highest methane yields, the techno-economical evaluation of the process showed that pre-treatment with methanol was the most viable economically, primarily due to the lower cost of methanol, compared to that of the other solvents.In the second part of the work, wool textile wastes were subjected to biogas production. Wool is mainly composed of keratin, an extremely strong and resistible structural protein. Thermal, enzymatic and combined treatments were, therefore, performed to enhance the methane yield. The soluble protein content of the pre-treated samples showed that combined thermal and enzymatic treatments had significantly positive effects on wool degradation, resulting in the highest methane yields, i.e. 10–20-fold higher methane production, compared to that obtained from the untreated samples.In the last part of this thesis work, dry digestion of wheat straw and wool textile waste, as well as their co-digestion were studied. The total solid (TS) contents applied in the digesters were between 6–30% during the investigations. The volumetric methane productivity was significantly enhanced when the TS was increased from 6 to 13–21%. This can be a beneficial factor when considering the economic feasibility of large-scale dry AD processes.
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Meale, Sarah Jade. "Effects of dietary additives identified as potential methane mitigators on production characteristics, wool quality and yield and tissue fatty acid composition of sheep." Thesis, The University of Sydney, 2014. http://hdl.handle.net/2123/11605.

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Effects of dietary additives identified as potential methane mitigators on production characteristics, wool quality and yield and tissue fatty acid composition of sheep The ability of dietary strategies to mitigate CH4 emissions must be balanced with their effects on animal performance in order to be widely adopted by producers. This thesis investigated promising supplements [P. freudenreichii, crude glycerin and two species of micro-algae (A. nodosum and Schizochytrium spp.)] in terms of their CH4 mitigation potential, effects on lamb production, fatty acid (FA) profile of lamb; and wool yield and quality characteristics. It is noted that there is a strong consumer push for a healthier FA composition of lamb and as such producers will inevitably shift production to meet consumer demands. Results presented here indicate the potential of P. freudenreichii to reduce CH4, but showed little effects on FA biohydrogenation. Supplementation of crude glycerin successfully replaced wheat in Merino ewe diets; however, no improvements were observed on wool yield or quality. The supplementation of Tasco® (A. Nodosum) did not affect production performance, but failed to favourably alter the FA profile of lamb as compared to other dietary oils. Conversely, DHA-Gold (Schizochytrium spp.) supplementation elicited a favourable shift in the FA profile of lamb through n-3 enrichment of both adipose tissue and skirt muscle. A further molecular investigation into the regulation of adipogenesis in lambs revealed differences in miRNA expression between subcutaneous and perirenal adipose tissues that could be influenced by micro-algae supplementation. As such, the results presented in this thesis suggest that although supplements may have the potential to reduce CH4 emissions, their effects on production may not always be favourable. In the current case, the supplementation of micro-algae (Schizochytrium spp.) proved to be the most effective at positively modifying the FA profile of lamb.
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Books on the topic "Wool production"

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Botkin, M. P. Sheep and wool: Science, production, and management. Englewood Cliffs, N.J: Prentice-Hall, 1988.

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Hunter, John P. The economics of wool and mohair production and marketing in Lesotho. Maseru, Lesotho: Land Conservation and Range Development Project, Range Management Division, 1987.

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K, Tandon S. Production and properties of mixed-micron wool/cotton tropical fabrics. Christchurch: Wronz, 1992.

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D, Phillips William, ed. Spain's golden fleece: Wool production and the wool trade from the Middle Ages to the nineteenth century. Baltimore: Johns Hopkins University Press, 1997.

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Singh, Ranveer. Production and marketing of wool and mutton in India: A study of Himachal Pradesh. New Delhi, India: Mittal Publications, 1992.

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1943-, Croker K. P., ed. Growth and wool production of Merino wethers after treatment with testosterone. Perth: Department of Agriculture Western Australia, 1992.

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M, Davison R. A review of financial and production trends in the New Zealand sheep and beef sector, 20 March 1991. Wellington: N.Z. Meat & Wool Boards' Economic Service, 1991.

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Wool and society: Manufacturing policy, economic thought and local production in 18th-century Iceland. Göteborg: Makadam, 2008.

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Lilja, Fredrik. The golden fleece of the Cape: Capitalist expansion and labour relations in the periphery of transnational wool production c. 1860-1950. Uppsala, Sweden: Uppsala Universitet, 2013.

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McClelland, G. E. Production of high-purity gold from zinc precipitates and steel wool cathodes by hydrometallurgical refining. Pittsburgh, Pa. (4800 Forbes Ave., Pittsburgh 15213): U.S. Dept. of the Interior, Bureau of Mines, 1985.

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Book chapters on the topic "Wool production"

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Samson, Leslie. "Angora wool production." In Rabbit production, 292–302. 10th ed. Wallingford: CABI, 2022. http://dx.doi.org/10.1079/9781789249811.0022.

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Abstract This chapter highlights the different aspects of Angora wool production which includes: wool coat growth and yield; management; wool block (gastric statis); equipment for grooming and wool harvesting; removal of wool; care of shorn rabbits; grading and sorting of Angora wool; and home-spinning of Angora wool.
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Ryder, Michael L. "Genetics of Wool Production." In Encyclopedia of Genetics, 374–78. New York: Routledge, 2014. http://dx.doi.org/10.4324/9781315073972-50.

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Lukefahr, Steven D., James I. McNitt, Peter R. Cheeke, and Nephi M. Patton. "Marketing rabbits and their products." In Rabbit production, 313–21. 10th ed. Wallingford: CABI, 2022. http://dx.doi.org/10.1079/9781789249811.0025.

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Abstract This chapter presents an overview of various rabbit products and by-products and their marketing. These include: rabbit meat; breeding stock; laboratory stock; skins; pharmaceuticals; Angora wool; fur crafts; pets; fertilizers from rabbit manure; and earthworms grown in beds of rabbit manure.
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Booth, P. C. "Priorities for Production Research." In The Biology of Wool and Hair, 489–94. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-011-9702-1_35.

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Creevey, Lucy E. "4. Guatemala - Wool Production and Processing Project." In Changing Women’s Lives and Work, 67–90. Rugby, Warwickshire, United Kingdom: Practical Action Publishing, 1996. http://dx.doi.org/10.3362/9781780444659.004.

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Fejic, Nenad. "An apparent paradox: wool as an alternative currency for merchants and weavers in Dubrovnik (Ragusa) in the 15th century." In Datini Studies in Economic History, 325–36. Florence: Firenze University Press, 2024. http://dx.doi.org/10.36253/979-12-215-0347-0.20.

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This article examines the use of wool as an alternative currency in Dubrovnik in the first half of the 15th century. The actors of this practice were Catalan merchants who advanced wool to local weavers. In return, the weavers had to refund the credit by transforming the wool into fabrics. The quantity of fabrics returned was always greater than the quantity that could be produced from the wool received. This use of wool as an alternative currency corresponded to the mining prosperity in the Balkans. Silver, a precious metal, was exported by the Catalans, rather than being used to finance local wool production, which therefore had to resort to a local financing circuit, where wool, in the absence of silver currency, served as an alternative currency.
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Alves, Joner O., Girley F. Rodrigues, Denise C. R. Espinosa, and Jorge A. S. Tenorio. "Production of Rock Wool from Ornamental Rock Wastes." In EPD Congress 2011, 1046–51. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118495285.ch116.

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Leng, R. A. "The Scope for Manipulation of Fermentative Digestion in the Rumen to Improve Ruminant Production." In The Biology of Wool and Hair, 205–15. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-011-9702-1_14.

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Gowane, G. R., Y. P. Gadekar, Ved Prakash, Vinod Kadam, Ashish Chopra, and L. L. L. Prince. "Climate Change Impact on Sheep Production: Growth, Milk, Wool, and Meat." In Sheep Production Adapting to Climate Change, 31–69. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4714-5_2.

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Shiddieqy, Mohammad Ikhsan, Bess Tiesnamurti, Ratna Ayu Saptati, and Pita Sudrajad. "Sustainable Wool Production and Management System in Small Enterprise." In Advances in Biological Sciences Research, 60–70. Dordrecht: Atlantis Press International BV, 2023. http://dx.doi.org/10.2991/978-94-6463-116-6_9.

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Conference papers on the topic "Wool production"

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Johansson, A. M. "712. Wool colour traits in Gotland sheep and association with a deletion in ASIP." In World Congress on Genetics Applied to Livestock Production. The Netherlands: Wageningen Academic Publishers, 2022. http://dx.doi.org/10.3920/978-90-8686-940-4_712.

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Pavlin, Majda, Barbara Horvat, and Vilma Ducman. "Pilot Production of Façade Panels: Variability of Mix Design." In International Conference on Technologies & Business Models for Circular Economy. University of Maribor Press, 2023. http://dx.doi.org/10.18690/um.fkkt.1.2023.3.

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As part of the WOOL2LOOP project, the Slovenian National Building and Civil Engineering Institute (ZAG), in collaboration with Termit d.d. were responsible for the production of façade panels. An initial mix design was developed at ZAG, where alkali-activated façade panels were produced, primarily from stone wool waste, while production took place at Termit. The mix design was changed twice during the pilot production, before a final product with suitable durability was developed. A compressive strength of up to 60 MPa and bending strength of approximately 20 MPa was achieved. The mechanical properties, however, varied, due to the unevenly milled batches of the milled mineral wool. Milling on a larger scale is very challenging, and it is difficult to obtain consistent quality of the milled material. Once the correct curing process had been found, however, the panels produced showed good performance. Moreover, the results from leaching tests showed that the elevated concentrations of certain elements (Cr, As and Mo) did not exceed the legal limits for non-hazardous waste.
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Nüssler, Dirk, Nils Pohl, and Sven Leuchs. "Inline density measurement for rock wool." In OCM 2017 - 3rd International Conference on Optical Characterization of Materials. KIT Scientific Publishing, 2017. http://dx.doi.org/10.58895/ksp/1000063696-12.

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Distinguishing the density of rock wool is an important part in its production process. One available common option for inline measurements of the density is based on X-rays. Due to huge security requirements in realising such measurements, this method is very complex and expensive. This paper investigates a method to find a relationship between radar based measurements and the density of rockwool. This is shown by evaluating the measurements of amplitude and phase of several rock wool samples with different densities. The results show a linear dependency of the measured phase values and the surface weights of the given samples.
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Marques, C. B., I. De Barbieri, J. Velazco, E. A. Navajas, and G. Ciappesoni. "28. Genetic parameters for feed efficiency, gas emissions, oxygen consumption and wool traits in Australian Merino." In World Congress on Genetics Applied to Livestock Production. The Netherlands: Wageningen Academic Publishers, 2022. http://dx.doi.org/10.3920/978-90-8686-940-4_28.

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Vargas Jurado, N., J. W. Keele, L. A. Kuehn, and R. M. Lewis. "335. Genomic prediction of wool shedding in a composite sheep flock using pooled allele frequencies and individual genotypes." In World Congress on Genetics Applied to Livestock Production. The Netherlands: Wageningen Academic Publishers, 2022. http://dx.doi.org/10.3920/978-90-8686-940-4_335.

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Shishlina, N., and L. Kuptsova. "РАДИОУГЛЕРОДНАЯ ХРОНОЛОГИЯ ШЕРСТЯНЫХ ТКАНЕЙ ЭПОХИ ПОЗДНЕЙ БРОНЗЫ ЗАПАДНОГО ОРЕНБУРЖЬЯ." In Радиоуглерод в археологии и палеоэкологии: прошлое, настоящее, будущее. Материалы международной конференции, посвященной 80-летию старшего научного сотрудника ИИМК РАН, кандидата химических наук Ганны Ивановны Зайцевой. Samara State University of Social Sciences and Education, 2020. http://dx.doi.org/10.31600/978-5-91867-213-6-109-111.

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The new 14C dates of wool textile from Srubnaya western Orenbur region correlate well with the period of the rapid spread across the steppe and the forest-steppe belts in northern Eurasia. We may infer from our analysis that in 1750–1650 BC the production of wool textiles in the southern Urals steppe belt was integrated into the economy of the local Ural population.
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Nazarova, Matluba, Aziza Abdujabborova, Sadafxon Shavkatjanova, and Laylo Begim Sharifiy. "Optimization of production processes of heat-retaining non-woven fabrics using local wool fibers." In PROBLEMS IN THE TEXTILE AND LIGHT INDUSTRY IN THE CONTEXT OF INTEGRATION OF SCIENCE AND INDUSTRY AND WAYS TO SOLVE THEM: PTLICISIWS-2. AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0197634.

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Elias, M. K., and C. Th Smit Sibinga. "PRODUCTION OF PLATELETS FOR TRANSFUSION - CURRENT METHODS AND PROBLEMS TO BE SOLVED." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643998.

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Initially, whole blood or platelet rich plasma were used as sources of platelets. Nowadays the methods of platelet concentrates (pc) production adopted in Blood Banks include the traditional method of platelet preparation by differential centrifugation of units of whole blood, besides the much more sophisticated technique of extracorporeal collection of pc with improved immunological compatibility.Manually pc are produced by the platelet rich plasmamethod, the buffy coat method and multiple bag plateletapheresis. The machine collection of pc is done by plateletapheresis or platelet elutriation, with different degrees of automation.The standard manual method remains quantitatively the most important source of platelets.However, there are major concerns:-the need of multiple donors-The high contamination with white cells, predominantly lymphocytes-these pc are depleted from larger and more active platelets, as these are sedimented with the red cells-increased risk of bacterial contamination. To solve these problems there are some potention solutions:-use of single donor collectioon techniques-depletion of leucocytes by:a.elutriation of platelets from the buffy coatb.filtration of random pc through cotton wool columnc. prostacyclin inhibition of platelet aggregation followed by cellulose acetate filtrationd.filtration on elutriated platelets through cotton wool-use of a platelet synthetic medium void of glucose for resuspension and storage of pc to prevent lactate accumulation and pH fall-use of closed sterile harness systems to collect platelets by surge plateletapheresis, which allows extended storage of leucocyte depleted pc.Selection of the most appropriate platelet concentrate depends on the interrelationship of many factors:1) yield 2) function 3) viability after storage 4) afety 5) purity 6) potency 7) efficacy (recovery, survival and haemostatic capacity).
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CAPPUCCI, Sergio, Floriana LA MARCA, Roberto FALCONE, Nicole FABRIZIO, and Silvia DE POL. "Sediment’s vitrification from industrial sites and their reuse as secondary raw materials for mineral wool production." In Conférence Méditerranéenne Côtière et Maritime - Coastal and Maritime Mediterranean Conference. Editions Paralia, 2015. http://dx.doi.org/10.5150/cmcm.2015.025.

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Oyedeji, F. O., and J. O. Momoh. "Potential Human Hair and Sheep Wool Dyeing Characteristics of Hair Colour Formulations Prepared from Four Vegetable Dyes." In 28th iSTEAMS Multidisciplinary Research Conference AIUWA The Gambia. Society for Multidisciplinary and Advanced Research Techniques - Creative Research Publishers, 2021. http://dx.doi.org/10.22624/aims/isteams-2021/v28n2p11.

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Man insatiable desires often leads him to many choices. Some functional, others for the purpose of decoration or acceptability. The dyeing of hair can be comfortably placed in any of the three categories. The production of hair colours is a multi-billion dollar industry that involves the use of both plant-derived and synthetic dyes. Unlike synthetic dyes which can be toxic and harmful to the environment; natural dyes are biodegradable, non-toxic and compatible with environment. In the present study the comparative black – brown colouring effect of seven dye formulations made from ethanol and chloroform extracted pigments of some local dye yielding plants; Lawsonia inermis, Loncocarpus cyanescens, Pterocarpus osun and Trema orientalis on grey human hair and sheep wool was observed and recorded after two hours of dye uptake; storage at room temperature for 4 days and exposure to sunlight for 4 days. % yield of extracted dye ranged from 1.04 - 3.20 in the order Lawsonia inermis < Trema orientalis < Lonchocarpus cyanescens < Pterocarpus osun dye. The colours of the dyes obtained were orange (Lawsonia inermis), yellow (Loncocarpus cyanescens), dark red (Pterocarpus osun) and dark green (Trema orientalis). The human hair took up the dye more readily than the sheep wool and the black-brown colouring effect was maximum with formulation 7 and in the order PF 7>PF 3 > PF 5 > PF 4 > PF 1> PF 6 >P2 with the colour being retained for the greatest period of time at room temperature while fading gradually with the length of exposure to sunlight for both human hair and wool. The colour deepened however for sheep wool, with length of stay at room temperature. In conclusion, the natural dye formulations coloured the hair better than sheep wool, it may therefore be suitable for the formulation of hair colouring solution, after toxicity tests, colour fixing and modification studies have been carried out on the dyes. Keywords: Lawsonia inermis, Loncocarpus cyanescens, Pterocarpus osun, Trema orientalis, Human hair, Sheep wool, Vegetable dyes.
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Reports on the topic "Wool production"

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Martin, Kathi, Nick Jushchyshyn, and Claire King. James Galanos, Wool Evening Suit. Fall 1984. Drexel Digital Museum, 2018. http://dx.doi.org/10.17918/6gzv-pb45.

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The URL links to a website page in the Drexel Digital Museum (DDM) fashion image archive containing a 3D interactive panorama of an evening suit by American fashion designer James Galanos with related text. This evening suit is from Galanos Fall 1984 collection. The skirt and bodice of the jacket are black and white plaid wool. The jacket sleeves are black mink with leather inserts that contrast the sheen of the leather against the luster of the mink and reduce some of the bulk of the sleeve. The suit is part of The James G. Galanos Archive at Drexel University gifted to Drexel University in 2016. The panorama is an HTML5 formatted version of an ultra-high resolution ObjectVR created from stitched tiles captured with GigaPan technology. It is representative the ongoing research of the DDM, an international, interdisciplinary group of researchers focused on production, conservation and dissemination of new media for exhibition of historic fashion.
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Gootwine, Elisha, David Thomas, Ruth Braw-Tal, Amir Bor, and P. J. Dziuk. Improvement of Prolificacy of Israeli and U.S. Sheep Breeds through Inclusion of the F Gene of the Booroola Merino-Stage II. United States Department of Agriculture, May 1995. http://dx.doi.org/10.32747/1995.7604931.bard.

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The purposes of this project were: 1) to introduce the FecB gene to the Awassi and Assaf breeds in Israel and the Rambouillet breed in the U.S.A. aiming in the long run to establish Awassi, Assaf and Rambouillet nucclei breeding flocks homozygous for the F gene in which the contribution of the Booroola Merino genetic background will be less than 10%; (In the U.S., Booroola crosses with Suffolk and Targhee were also studied. 2) to evaluate the effect of the FecB gene and different proportions of Booroola Merino genetic background on lamb survival, growth, milk production and wool production in Booroola crosses with the native breeds; 3) to reveal the specific effect of the FecB gene on ovarian development, follicle stimulating hormone (FSH) and inhibin secretion in prepubertal ewe lambs and in adult ewes in order to define physiological criteria for distinguishing carriers of the FecB allele from non-carriers and 4) to identify genetic markers linked to the FecB gene to assist in selection of genotypes within the Booroola crosses. Introgression of the Booroola gene reached the stage of the third backcross in the Awassi, Assaf and the Rambouillet crosses. In all cases the Booroola crosses were superior in prolificacy. However, they were inferior in comparison to the local breeds in production due to Booroola Merino genes other than the FecB. It is expected that the beneficial economic contribution of the Booroola gene will increase along with the upgrading to the local breeds. FSH plasma levels and induced ovulation rate of 5 month old FecB carriers among the crossbreeds. The OarAE101 marker can assist in detecting FecB carriers among Booroola-Awassi crosses. However, this marker is informative only in some of the families.
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Provenza, Frederick, Avi Perevolotsky, and Nissim Silanikove. Consumption of Tannin-Rich Forage by Ruminants: From Mechanism to Improved Performance. United States Department of Agriculture, April 2000. http://dx.doi.org/10.32747/2000.7695840.bard.

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Trees and shrubs are potentially important sources of food for livestock in many parts of the world, but their use is limited by tannins. Tannins reduce food intake by decreasing digestibility or by causing illness. Supplementing cattle, sheep, and goats with polyethylene glycol (PEG), which has a high affinity for binding tannins and thus attenuating their aversive effects, increases intake of high-tannin foods and improves weight gains and wool growth. The objectives of this proposal were: Objective 1: To further delineate the conditions under which PEG affects intake of high-tannin foods. Objective 2: To ascertain if animals self-regulate intake of PEG in accord with the tannin content of their diet under pen, paddock, and field conditions. Objective 3: To determine how nutritional status and PEG supplementation affect preference for foods varying in nutrients and tannins. Objective 4: To assess the effects of PEG on food selection, intake, and livestock performance in different production systems. The results from this research show that supplementing livestock with low doses of PEG increases intake of high-tannin foods and improves performance of cattle, sheep, and goats. Neutralizing the effects of tannins with supplemental PEG promotes the use of woody species usually considered useless as forage resources. Supplementing animals with PEG has the potential to improve the profitability - mainly milk production - of high-yielding dairy goats fed high-quality foods and supplemented with browse in Mediterranean areas. However, its contribution to production systems utilizing low-yielding goats is limited. Our findings also support the notion that supplemental PEG enhances the ability of livestock to control shrub encroachment and to maintain firebreaks. However, our work also suggests that the effectiveness of supplemental PEG may be low if alternative forages are equal or superior in nutritional quality and contain fewer metabolites with adverse effects.
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Howard, James L., Rebecca Westby, and Kenneth E. Skog. Criterion 6, indicator 32 : exports as a share of wood and wood products production and imports as a share of wood and wood products production. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, 2010. http://dx.doi.org/10.2737/fpl-rn-318.

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Felister, Mombo, Ngaga Yonika, Beatus John Temu, Kainyande Aruna, and Kendisha Soekardjo Hintz. Narrowing the wood supply gap through on-farm wood production in Tanzania. Technische Universität Dresden, August 2022. http://dx.doi.org/10.25368/2022.364.

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Teshome, Busha, Tsegaye Bekele, Aruna Kainyande, and Kendisha Soekardjo Hintz. Narrowing the wood supply gap through on-farm wood production in Ethiopia. Edited by La Thi Tham. Technische Universität Dresden, August 2022. http://dx.doi.org/10.25368/2022.365.

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Brackley, Allen M., David L. Nicholls, Maureen Puettmann, and Elaine Oneil. Life cycle assessment of wood energy for residential heating—opportunities for wood pellet production in southeast Alaska. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2017. http://dx.doi.org/10.2737/pnw-gtr-951.

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Brackley, Allen M., David L. Nicholls, Maureen Puettmann, and Elaine Oneil. Life cycle assessment of wood energy for residential heating—opportunities for wood pellet production in southeast Alaska. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2017. http://dx.doi.org/10.2737/pnw-gtr-951.

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Deal, Robert L., and Seth M. White. Understanding key issues of sustainable wood production in the Pacific Northwest. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2005. http://dx.doi.org/10.2737/pnw-gtr-626.

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Brackley, Allen M., and Daniel J. Parrent. Production of wood pellets from Alaska-grown white spruce and hemlock. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2011. http://dx.doi.org/10.2737/pnw-gtr-845.

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