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A Study on the Density of Agglomerates Prepared from cork Wastes

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Journal of Materials Science & Technology 2003年第1期19卷 46-50页

作者： A.Macias-Garcia A.Diaz-Parralejo 等 AreaofMaterialsScienceandMetallurgyEngineering FacultyofIndustrialEngineeringUniversityofExtremadure06071BadaiozSpain AreaofMaterialsScienceandMetallurgyEngineering FacultyofIndustrialEngineeringU

The density of black regranulate (BR) of cork and of black agglomerate (BA) and composite agglomerate (CA) prepared fromsuch a waste by different methods was investigated. The preparation of the agglomerates was undertaken by controlling thespecimen thickness for BA and the particle size for BR and the binder dosage for CA. The mass changes produced in theoven-drying treatment at 376.15 K of the agglomerates and in their subsequent stabilization under ambient conditions werealso analyzed. The density was determined by standard methods. For BR, the bulk density first decreased and then increasedwith decreasing particle size. It was much lower than the apparent density of the agglomeration products of cork. Although toa lesser extent, the density was also lower for BA than for CA. It was higher for the smaller thickness specimens of BA. In thecase of CA, the density followed the same variation trends as for BR. Furthermore it increased significantly with the increasein resin dosage. This resulted in a noticeable increase in the weight loss during the oven-drying and in a significant decreasein the degree of moisture adsorption during the stabilization period of the agglomerate.

关键词： cork Agglomerates Density

Applicability of Lung Equivalent Phantom Using the cork with Absorbed Water in Radiotherapeutic Dosimetry

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International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2018年第1期7卷 27-34页

作者： Hiraku Fuse Tatsuya Fujisaki Ryutaro Ikeda Zen Hakani Department of Radiological Sciences Ibaraki Prefectural University of Health Sciences Ibaraki Japan Division of Medical Physics Department of Radiation Oncology Tohoku University Graduate School of Medicine Sendai Japan Department of Radiological Technology JA Toride Medical Center Ibaraki Japan

The radiation dosimetry in medical practice requires special phantom to simulate the organs and tissues of a human body. To achieve the same elemental composition as that of the human lung by weight percent, we constructed lung equivalent phantom (LEP) using cork with absorbed water in order for it to uniformly absorb the water. Then, we presented the physical properties and dosimetric characteristics of other commercial phantoms and the LEP. We found that the physical properties and dosimetric characteristics of the LEP were approximately the same as those of human lung tissue. LEP constitutes a new dosimetry tool because it can provide the dose distributions and point doses similar to those for the body with respiratory motion of lung.

关键词： cork Lung Equivalent Phantom Respiratory Motion Dosimetry

Predicting cork Oak Suitability in Maâmora Forest Using Random Forest Algorithm

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Journal of Geographic Information System 2015年第2期7卷 202-210页

作者： Said Lahssini Hicham Lahlaoi Hicham Mharzi Alaoui El Aid Hlal Martino Bagaram Quentin Ponette National School of Forestry Engineering Salé Morocco Geosciences Laboratory Faculty of Sciences Ain Chock Hassan II University Casablanca Morocco Institut of Agronomy and Veterinary Hassan II Rabat Morocco Catholic University of Louvain Louvain la Neuve Belgium

Maamora is considered the most important cork-oak forest in the world with regard to surface. Therefore, anthropic pressure, including cork harvesting, grazing and soft acorn picking up by local communities, has harmful consequences on forest regeneration and the forest become older exceeding harvesting age. Thus, its sustainability depends on the managers’ ability to succeed cork oak plantations. This work presents an assessment approach to evaluate Quercus suber suitability to its plantation which is based on a random forest algorithm (RF). In fact, this suitability has been assessed through analyzing management data related to previous plantation success rates (SR). Then a relationship between SR and a set of environmental and social factors has been investigated using the RF. Application of the fitted model to continuous maps of all involved factors enabled establishment of suitability maps which would help managers to make more rational decisions in terms of cork oak regeneration, ensuring Maamora forest sustainability.

关键词： cork Oak Maamora Habitat Suitability Random Forest GIS

Nitrogen and Organic Matter Mineralization in the Tunisian cork Oak Forest: A Laboratory Study

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Open Journal of Forestry 2015年第3期5卷 287-295页

作者： Zouaoui Ikbel Abbes Chaabane Ouled Sghaier Wided Hasnaoui Foued Hasnaoui Brahim Smiti Samira Sylvo Pastoral Institute of Tabarka University of Jendouba Jendouba Tunisia Faculty of Sciences of Tunis University of Tunis El Manar Tunis Tunisia

The mineralization of the organic matter is a very important phenomenon which leads to the release of nutriments used by plants. The rate of transformation of the organic matter depends on several factors and parameters such as climatic factors and biological and physicochemical properties of the soil and the litter. In this study, we investigate the effect of the addition of litter of various species as well as the effect of soil moisture on mineralization of organic matter and on mineral nitrogen release in three soils sampled in three cork oak stands during a period of 41 days under the same laboratory conditions. Carbon mineralization was determined using CO2 respiration method, whereas the mineral nitrogen content was measured at the last day of incubation both in soil samples with added plant leaf material, and in control soil samples without addition under two treatments of moisture (40% and 80% WHC—water holding capacity). Our results show that the addition of leaf litter causes an increase in the microbial activity. Soils without addition were significantly different from the plant leaf added soils in respect to carbon mineralization at the end of the incubation period. Moreover, it is noted that the mineralization of carbon is more marked with moisture at 80% than that of 40%, contrary to that of the nitrogen, which is not influenced by the variation of moisture.

关键词： Mineralization Organic Matter Carbon Nitrogen cork Oak Moisture

Effect of Amino Acids on Secondary Somatic Embryogenesis of Moroccan cork Oak (<i>Quercus suber</i>L.) Tree

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American Journal of Plant Sciences 2020年第5期11卷 626-641页

作者： Safaa Rahmouni Zineb Nejjar El Ansari Alain Badoc Patrick Martin Mohammed L’Bachir El Kbiach Ahmed Lamarti Laboratory of Plant Biotechnology Department of Biology Faculty of Sciences Abdelmalek Essaadi University Tetouan Morocco Axe MIB (Molécules d’Intérêt Biologique) Unité de Recherche Œnologie UFR des Sciences Pharmaceutiques Université de Bordeaux ISVV (Institut des Sciences de la Vigne et du Vin) Villenave-d’Ornon France Université d’Artois UniLaSalle Unité Transformations & Agroressources Béthune France.

In the present study, we tested the effect of amino acids on secondary somatic embryogenesis of Moroccan cork oak (Quercus suber L.). Secondary mature and immature somatic embryos were obtained from primary somatic embryos cultured in N30K medium supplemented with nineteen amino acids. Stimulation of embryogenesis was dependent on the type and concentration of amino acid in the medium. Thus, L-glutamine and L-asparagine at 3.42 mM have been proved to be the most favorable for the formation of functional somatic embryos and the induction of secondary somatic embryos.

关键词： cork Oak Quercus suber L. Secondary Somatic Embryogenesis Amino Acids

USE OF cork SHEETS FOR ROOM ACOUSTIC CORRECTION

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Journal of Green Building 2020年第2期15卷 45-55页

作者： Gino Iannace Giuseppe Ciaburro Luigi Guerriero Amelia Trematerra Department of Architecture and Industrial Design Università della Campania“Luigi Vanvitelli”Borgo San Lorenzo 81031Aversa(Ce)—Italy

cork is a sustainable material and at the end of its useful life it can be disposed of into the environment without causing *** paper analyzes an acoustic correction system made of cork sheets mounted at an opportune distance from the walls inside a *** cork sheets have a thickness equal to 1.5 *** sound absorption coefficients of the cork sheets were initially evaluated by mounting samples inside an impedance tube,then creating a back cavity at a suitable distance from a rigid *** distances considered were:3,5,10 and 15 cm.A room used as an office with a volume of about 90 m^(3)and plastered walls was considered as a *** this type of environment,suitable acoustic comfort conditions are *** acoustic characteristics were analyzed through a virtual model with an architectural acoustics software in an empty room and then with the introduction of sound-absorbing cork *** of the acoustic characteristics of the empty room were taken and subsequently with the walls lined with cork panels mounted at a distance of 3.0 cm from the rigid rear wall.A configuration was analyzed,in line with what was carried out in the numerical model,covering a surface of 5m^(2)of the *** results of the numerical simulations as well as the experimental measurements are discussed.

关键词： cork absorption coefficient acoustic reverberation time measurements acoustic simulation

Development of Composites Sandwich Structures Using a Core cork

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材料科学与工程（中英文A版） 2018年第3期8卷 100-107页

作者： D.Regacon A.Garay UFN University Franciscana Santa MariaSanta MariaRS 97015-001 Brazil PPGEM Federal University of Rio Grande do Sul(UFRGS)Porto AlegreRS 91501-970Brazil

Sandwich structures are comprised of two external faces/skins(usually made of synthetic fiber/resin)and a core between them,being lightweight and with high *** employment of composite materials such as engineering materials has achieved more space in various segments of the industry,due to the following properties found:low density,stiffness,resistance to abrasion,impact and corrosion developed along the technological advancement of *** study aimed to develop a composite structure sandwich with cork core using in the face resin unsaturated polyester and glass fiber material,in order to obtain a final material with improved mechanical and physical properties compared to a conventional composite,without *** samples were obtained by pressing process for different volume percentage of glass fiber in order to evaluate the influence of this parameter on the behavior of the *** different samples were mechanically analyzed using the tests by tensile,bending and hardness,revealing high efficiency,except for the bending test in which the sandwich composite showed lower values compared to the composite *** was also performed to test water absorption,thermal and acoustic insulation test achieving satisfactory results and proving the effectiveness of cork in the search for materials with insulating characteristics,thus enabling the use of cork as a raw material for this class of materials contributing to sustainability and helping to generate values and *** addition,it functions as a great thermal and acoustic insulation.

关键词： Composite sandwich cork core mechanical and physical properties thermal and acoustic properties

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海底cork观测30年：发展、应用与展望

地球科学进展 2017年第12期32卷 1297-1306页

作者：方家松李江燕张利上海海洋大学深渊科学与技术研究中心上海201306 青岛海洋科学与技术国家实验室海洋生物学与生物技术功能实验室山东青岛266071 中国地质大学(武汉)地球科学学院地质过程与矿产资源国家重点实验室湖北武汉430074

过去50年深海钻探计划(DSDP)、大洋钻探计划(ODP)及综合大洋钻探计划(IODP)等国际间综合深海钻探计划的实施,使我们对地球和海洋的认识取得了显著进步。海底井控观测装置(cork)的研发和应用是上述深海钻探计划带给我们的最宝贵财富之一... 详细信息

过去50年深海钻探计划(DSDP)、大洋钻探计划(ODP)及综合大洋钻探计划(IODP)等国际间综合深海钻探计划的实施,使我们对地球和海洋的认识取得了显著进步。海底井控观测装置(cork)的研发和应用是上述深海钻探计划带给我们的最宝贵财富之一。目前地球科学和海洋科学已由过去的间断性观测模式升级为现在的连续性原位观测模式,海底cork观测系统为地球科学、海洋科学与生命科学领域的科学家对海底洋壳复杂而又相互关联的深部过程进行数秒至数十年时间尺度的研究提供了新手段和新机遇。通过对海底cork观测系统的发展演变、在ODP和IODP航次中的使用以及在此过程中获得的科学经验和教训进行总结,对cork系统如何应用于我国洋壳地质学、水文学、微生物学及生物地球化学过程研究提出看法。

关键词： cork 海底观测深海钻探洋壳

cork冠状动脉疾病病例对照研究中急性冠状动脉综合征和慢性感染的关系

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世界核心医学期刊文摘（心脏病学分册） 2005年第5期1卷 50-51页

作者： Sheehan J. Kearney P.M. Sullivan S.O. 陶蕾 Dept. of Epidemiol. and Pub. Health University College Cork Cork Ireland Dr.

Objective: To examine the association between chronic infection and cumulative burden of infection and acute coronary syndrome. Design: The 5C(cork coronary care case-control)-study was a community based case-control study. Patients and controls underwent a standard physical examination and had blood samples taken for serological analysis for Helicobacter pylori(IgG), Chlamydia pneumoniae(IgA, IgM, and IgG), cytomegalovirus(IgG), and herpes simplex virus types 1 and 2(IgG). Setting: Patients were recruited from four hospitals in cork City and Mal lowTown, Controls, individually matched on age and sex, were selected by incident density sampling from the same general practices as the referent case. Main outcome measures: Age and sex adjusted and fully adjusted odds ratios for acute coronary syndrome by seropositivity and by increasing number of infections. Results: Cases and controls did not differ significantly in seropositivity to C pneumoniae, cytomegalovirus, herpes simplex viruses, and H pylori. In unconditional logistic regression analysis adjusted for age, sex, waist to hip ratio, smoking, physical activity, alcohol consumption, and social class there was no evidence of an increasing risk for acute coronary syndrome with increasing burden of infection. Conclusions: The findings do not support an association between specific infectious agents and acute coronary syndrome and do not provide evidence of a burden of infection effect.

关键词： cork 病例对照研究肺炎衣原体感染数血清学阳性综合医疗机构 IgG 巨细胞病毒体格检查单纯疱疹病毒