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| BITTENCOURT, D. M. de C.; VERZA, N. C.; SOUTO, B. M.; OLIVEIRA, P. E. F.; SILVA, L. P.; LEWIS, R. V.; RECH, E. L.. |
| Major ampullate sílk, which serves as the spider's lifeline and structural frame silk for its web, has been the most extensively studied of the spider silks, probably because of its exceptional mechanical properties. the major ampullate fibers of orb weavers are known to have strength on the same order of magnitude as that of the high performance fiber Kevlar but approximately seven times the elasticity. |
| Tipo: Parte de livro |
Palavras-chave: Biomecânica; Ampola; Spider; Nephilengys cruentata; Glándulas de seda; Fibras animales; Ingeniería de proteínas; Telarañas; Proteínas de la seda; Propiedades mecánicas.; Engenharia Genética; Aranha; Biologia Animal; Fibra Animal; Seda; Propriedade Mecânica.; Protein engineering; Araneae; Biomechanics; Silk glands; Silk proteins.; Mechanical properties; Animal fibers; Webs. |
| Ano: 2007 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/505929 |
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| Davies, Peter; Arhant, Mael; Le Gac, Pierre Yves; Le Gall, Maelenn; Kemlin, Guillaume. |
| There are more than a thousand species of bamboo and some of these contain large amounts of fibres with attractive properties. However, the extraction of the fibres without damaging them is difficult, requiring energy and special equipment. One solution is to use the bamboo in the form of thin strips taken from fibre-rich regions of the plant, as done by the Cobratex company in an innovative process. These contain the fibres but they are protected from damage and keep their alignment. This paper presents the results from a study of bamboo strips, alone and in an infused composite. The influence of seawater immersion is investigated. The composite weight gain is high, around 25 %, but most of the water is in the natural canals of the wood. The influence of... |
| Tipo: Text |
Palavras-chave: Bamboo; Density; Mechanical properties; Wet aging. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00593/70534/68681.pdf |
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| Mabasso,Geraldo Acácio; Siqueira,Valdiney Cambuy; Quequeto,Wellytton Darci; Resende,Osvaldo; Goneli,André Luís Duarte. |
| ABSTRACT Mechanical properties of agricultural products are essential for a proper project design or processing equipment dimensioning, as well as for establishment of parameters on the supported load. An experiment was set up in a completely randomized design, with five treatments (continuous and intermittent drying under 4, 8, 12, and 16 h of rest period) and four replications, to evaluate the effect of intermittent drying. Corn kernels of the cultivar Cargo TL were harvested with a moisture content of 25.37% wb and submitted to drying in an experimental fixed bed dryer set to a temperature of 100 °C and an airflow of 1.5 m3 min-1 m-2. Drying was performed until the kernels reached a moisture content of 14±0.3% wb. The process was interrupted in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Intermittent drying; Mechanical properties; Rupture force; Hardness; Drying rate. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000400415 |
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| Fayed, Mohamed Ismail Abd El-Ghaffar. |
| At the duration of this study, a sample of 100 intact apricot fruits, canino variety were selected randomly. The seeds were shelled using a nutcracker and the intact kernels were separated manually. Then, some apricot seed and kernel physical and mechanical properties were determined as relative parameters for designing the apricot seed kernels separator. The obtained results may be summarized as follows:At 7.13% (w.b.) apricot seeds moisture content, the length, width and thickness values were 18.90, 16.48 and 11.31 mm, respectively. The surface area, projected area, volume, arithmetic mean diameter, geometric mean diameter, sphericity and aspect ratio values were 727.09 mm2, 244.60 mm2, 1847.69 mm3, 15.56 mm, 15.20 mm, 80.61 % and 87.53 %, respectively.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Apricot; Canino; Kernel; Physical; Mechanical properties. |
| Ano: 2020 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5729 |
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| Azadbakht, Mohsen; Ghajarjazi, Ehsan; Ghaderifar, Farshid. |
| The mechanical properties for the threshing mechanism design, distance setting and the size of thrasher for better threshing and less damage to the seeds were used. In this study the mechanical properties of unbroken pods of canola were investigated including failure force, failure deformation, failure strain, failure energy, toughness, and modulus of elasticity planted in three canola varieties in the fields of Aliabad city in Iran including Hyola 50, 401, and 420 at the three times of sampling in pre-harvest, harvest and post-harvest in two direction of loading (in the direction of small and medium diameter). Canola varieties had different moisture levels at the same time, and this moisture was measured as a sub factor. The results show that moisture... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Canola; Mechanical properties; Canola pod.. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3350 |
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| Tanada-Palmu,Patrícia Sayuri; Grosso,Carlos R.F.. |
| Edible films based on gluten from four types of Brazilian wheat gluten (2 "semi-hard" and 2 "soft") were prepared and mechanical and barrier properties were compared with those of wheat gluten films with vital gluten. Water vapor, oxygen permeability, tensile strength and percent elongation at break, solubility in water and surface morphology were measured. The films from "semi-hard" wheat flours showed similar water vapor permeability and solubility in water to films from vital gluten and better tensile strength than the films from "soft" and vital gluten. The films from vital gluten had higher elongation at break and oxygen permeability and also lower solubility in water than the films from the Brazilian wheat "soft" flours. In spite of the vital gluten... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mechanical properties; Permeability; Vital gluten. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612003000200027 |
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| Sharanagat, Vijay Singh; Goswami, T. K.. |
| Study to determine physical and mechanical properties of seeds at different moisture content is necessary for the design of equipment to handle, process, transport, and store the same. The physical properties of coriander seeds have been evaluated as a function of seed moisture content, varying from 8% to 16% (w.b.). In the moisture 11.2%, seeds major, minor and medium dimensions were 5.062, 3.27, and 3.404 mm respectively. Sphericity of the seeds was found to be 0.757 with a surface area of 46.167 mm2. One thousand seed weight increased linearly from 8.89 to 9.826 g when the moisture content increases from 8.5 to 15.89% (w.b.). The true density of coriander seeds decreased when the moisture content increased 8.73 to 12%, from this point, true density... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Food process engineering physical properties; Mechanical properties. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2759 |
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| Le Duigou, Antoine; Pillin, Isabelle; Bourmaud, Alain; Davies, Peter; Baley, Christophe. |
| The biocompostability of natural fibre-reinforced biopolymers, also known as biocomposites, makes them an attractive alternative to glass fibre-reinforced petrochemical polymers. The aim of this work is to study the capacity of flax/PLLA (poly(L-lactide)) biocomposite (20% and 30% fibres by weight) to be recycled. Mechanical properties were evaluated initially, and shown to be similar to those of glass/PP and superior to hemp/PP and sisal/PP composites. Then after repeated injection cycles tensile properties were shown to be conserved until the third cycle. Matrix degradation and fibre aspect ratio were followed using molecular weight measurements, thermal and rheological analyses, image analysis of sections and SEM fractography. These techniques revealed... |
| Tipo: Text |
Palavras-chave: Mechanical properties; Recycling; Flax fibres; PLLA. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-6360.pdf |
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| Ferraro,G. C.; Moraes,J. R.; Shimano,A. C.; Pereira,G. T.; Moraes,F. R.; Bueno de Camargo,M. H.. |
| The aim of this study was to evaluate the effect of snake venom derived fibrin glue on the strength oftendon healing in dogs. The deep digital flexor tendon of the 5th digit of 24 thoracic limbs was partially sectioned for adhesive application. On the 7th, 15th, and 30th postoperative day tendons segments were removed for the clinical and biomechanical study. Results indicated that 62.5% of the tendons showed stump retraction and 20.8% moderate to excessive adherence, which affected gliding. The biomechanical evaluation showed that, over time, tendon healing gained progressive resistance for maximum traction and permanent deformations with satisfactory results on the 15th day for rigidity and resilience compared to the other two studied periods. Snake... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dog; Fibrin glue; Mechanical properties; Snake venom; Healing; Tendon. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992005000300005 |
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| Kibar, Hakan; Igdir University; Öztürk, Turgut; Igdir University; Temizel, Kadir Ersin; Ondokuz Mayis University. |
| Selected engineering properties (physical and mechanical) of dry bean under non-irrigation and drip-irrigation were determined and compared. These properties are necessary for the design of equipments for harvesting, processing, transporting, estimating loads in storage structures for crops and flow problems in silos such as arching, ratholing, irregular flow and segregation. Some engineering characteristics such as: average length, width, thickness, the geometric mean diameter, sphericity, surface area, volume, thousand grain mass (M1000), bulk and true densities, porosity, angle of internal friction, static coefficient of friction, Poisson ratio and pressure ratio were studied. The highest average values for physical properties were recorded at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural Engineering dry bean; Physical properties; Mechanical properties; Statistical analysis. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/19394 |
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| JIMÉNEZ-VILLEDA,Perla-Yesenia; RODRÍGUEZ-HERNÁNDEZ,Adriana-Inés; LÓPEZ-CUELLAR,Ma.-del-Rocío; FRANCO-FERNÁNDEZ,Melitón-Jesús; CHAVARRÍA-HERNÁNDEZ,Norberto. |
| Abstract Films were prepared with 0.2% (w/v) gellan gum, 1% (w/v) citric pectin, 0.5% (w/v) glycerol, 5 mM CaCl2, 0.05 M Ethylenediaminetetraacetic acid (EDTA), and different concentrations of an antimicrobial activity-concentrated supernatant (AMC) obtained from fermentations of Streptococcus infantarius, which produces bacteriocin-like inhibitory substances (i.e., treatments F1, F2 and F3 with 75, 90 and 120 arbitrary units (AU)/mL, respectively). The treatments were based on a minimum-inhibitory-concentration (i.e., AMC, 90 AU/mL, plus EDTA, 0.05 M) for Escherichia coli, Staphylococcus aureus and Listeria monocytogenes growing in brain-heart-infusion medium at 35 °C. The films hindered the bacterium growth in selective media: E. coli -MacConkey, S.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactic acid bacterium; Bacteriocins; Biopreservation; Mechanical properties; Gas permeability. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000200436 |
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