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  • 1
    Online Resource
    Online Resource
    Growth of Fertilized Maize via Fertirrigation and Foundation With Treated Human Urine and Cassava Wastewater
    Canadian Center of Science and Education ; 2018
    In:  Journal of Agricultural Science Vol. 10, No. 5 ( 2018-04-11), p. 188-
    Details
    In: Journal of Agricultural Science, Canadian Center of Science and Education, Vol. 10, No. 5 ( 2018-04-11), p. 188-
    Abstract: The agricultural reuse of wastewater is already a reality in several countries of the world. The objective of this work was to evaluate the growth of hybrid corn AG 1051 grown in fertilized soil via the foundation and fertirrigation with the combination of human urine and treated cassava and NPK in protected environment.The experiment was conducted at the Federal University of Campina Grande, Campina Grande, Paraíba. The experimental design was the completely randomized one with 14 treatments and four replications, being two experiments, one fertilized via foundation and the other via fertigation. The treatments were as follows: T1 (NPK), T2 (470 mL), T3 (670 mL), T4 (870 mL), T5 (1070 mL), T6 (1270 mL), T7 (1470 mL) applied via fertilization of fertirrigado, and the same dosages applied via fertirrigation corresponding to T9 mineral fertilization, and T10, T11, T13 and T14 the different doses of organic fertilization. There was an average increase of 17.32% in the Index of Emergency Speed for the seeds that were cultivated in soil fertilized with T3 and T4 in relation to the one fertilized with NPK (T1), the soil fertilized with T3 was the one that presented the highest %E (Emergency Percentage) with 98, 81%. At 15 days after the emergency (DAE), the chemical fertilization through the foundation promoted greater leaf area gain differently than at 65 DAE. The organic fertilization via fertigation promoted the highest gains for absolute and relative growth rates of plant height stem diameter and number of leaves.
    Type of Medium: Online Resource
    ISSN: 1916-9760 , 1916-9752
    URL: Article
    DOI: 10.5539/jas.v10n5p188
    Language: Unknown
    Publisher: Canadian Center of Science and Education
    Publication Date: 2018
    detail.hit.zdb_id: 2501913-2
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  • 2
    Online Resource
    Online Resource
    ATLANTIC ANTS: a data set of ants in Atlantic Forests of South America
    Wiley ; 2022
    In:  Ecology Vol. 103, No. 2 ( 2022-02)
    Details
    In: Ecology, Wiley, Vol. 103, No. 2 ( 2022-02)
    Abstract: Ants, an ecologically successful and numerically dominant group of animals, play key ecological roles as soil engineers, predators, nutrient recyclers, and regulators of plant growth and reproduction in most terrestrial ecosystems. Further, ants are widely used as bioindicators of the ecological impact of land use. We gathered information of ant species in the Atlantic Forest of South America. The ATLANTIC ANTS data set, which is part of the ATLANTIC SERIES data papers, is a compilation of ant records from collections (18,713 records), unpublished data (29,651 records), and published sources (106,910 records; 1,059 references), including papers, theses, dissertations, and book chapters published from 1886 to 2020. In total, the data set contains 153,818 ant records from 7,636 study locations in the Atlantic Forest, representing 10 subfamilies, 99 genera, 1,114 ant species identified with updated taxonomic certainty, and 2,235 morphospecies codes. Our data set reflects the heterogeneity in ant records, which include ants sampled at the beginning of the taxonomic history of myrmecology (the 19th and 20th centuries) and more recent ant surveys designed to address specific questions in ecology and biology. The data set can be used by researchers to develop strategies to deal with different macroecological and region‐wide questions, focusing on assemblages, species occurrences, and distribution patterns. Furthermore, the data can be used to assess the consequences of changes in land use in the Atlantic Forest on different ecological processes. No copyright restrictions apply to the use of this data set, but we request that authors cite this data paper when using these data in publications or teaching events.
    Type of Medium: Online Resource
    ISSN: 0012-9658 , 1939-9170
    URL: Issue
    URL: Article
    DOI: 10.1002/ecy.v103.2
    DOI: 10.1002/ecy.3580
    RVK:
    WA 15000
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 1797-8
    detail.hit.zdb_id: 2010140-5
    SSG: 12
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  • 3
    Online Resource
    Online Resource
    The effect of clay organophilization on wood plastic composite (WPC) based on recycled high density polyethylene (HDPE) and coir fiber
    SAGE Publications ; 2021
    In:  Progress in Rubber, Plastics and Recycling Technology Vol. 37, No. 4 ( 2021-11), p. 394-411
    Details
    In: Progress in Rubber, Plastics and Recycling Technology, SAGE Publications, Vol. 37, No. 4 ( 2021-11), p. 394-411
    Abstract: One way to optimize composite mechanical properties is through hybridization with small amounts of reinforcing fillers. Thus, this study investigates the effect of incorporation of 3 wt% of clay (BT) and organoclay (OBT) on the properties of a recycled wood plastic composite (WPC) based on HDPE and 20 wt% of coir fiber compounded with 5 wt% of maleic anhydride-grafted polypropylene (PP-g-MA), as coupling agent, and 5 wt% of Struktol TPW 113, as lubricating agent. Raw materials were characterized by X-ray fluorescence (XRF), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). Coir fiber was characterized by optical microscopy and TGA. Wood plastic formulations (with clay and organoclay) were prepared in an internal mixer coupled to a torque rheometer operating at 190°C, 60 rpm for 10 min. Then, the mixtures were compression molded. Formulations were characterized by SEM, TGA, DSC, tensile and water absorption tests. FTIR analysis showed the characteristic bands of organophilic clay. XRD showed an increment in the interplanar distance of the clay, after the incorporation of quaternary ammonium salt (distearyl dimethyl ammonium chloride, Praepagen® WB), confirming the organoclay formation. Organophilization decreases the clay hydrophilic character and reduces the water uptake of WPC-BT. Despite the fact that BT incorporation led to WPC nanocomposite with intercalated structure, this WPC-clay composition did not show a significant increase in tensile strength and elongation at break. The poor interfacial adhesion between the raw materials and the polymer matrix, the low aspect ratio provided by coir fibers and also, the partially intercalated structure of composites have contributed to this behavior.
    Type of Medium: Online Resource
    ISSN: 1477-7606 , 1478-2413
    URL: Article
    DOI: 10.1177/14777606211019404
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2021
    detail.hit.zdb_id: 2110205-3
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  • 4
    Online Resource
    Online Resource
    Characterization of wood plastic composite based on HDPE and cashew nutshells processed in a thermokinetic mixer
    Wiley ; 2018
    In:  Polymer Composites Vol. 39, No. 8 ( 2018-08), p. 2662-2673
    Details
    In: Polymer Composites, Wiley, Vol. 39, No. 8 ( 2018-08), p. 2662-2673
    Abstract: Wood plastic composites (WPC), which are used in high‐value markets, contribute to solve some of the problems associated with municipal solid waste accumulation. In this study, the effect of cashew nutshell powder (CNSP) content on properties of formulations with recycled high‐density polyethylene, 5 wt% of maleic anhydride grafted polypropylene and 5 wt% of struktol TPW 113, a blend of complex, modified fatty acid ester, was evaluated. Mixtures containing from 20 to 60 wt% CNSP were melt‐processed, using a thermokinetic mixer. WPC's were characterized by differential scanning calorimetry, Fourier transform infrared spectroscopy, and melt flow index (MFI) measurements. Composite morphology and mechanical properties were also accessed, respectively, by scanning electron microscopy and tensile tests. Results show that the tensile strength of composites decreased as the content of CNSP increased due to poor reinforcement–matrix interface and voids formed during residual cashew nutshell liquid (CNSL) vaporization. On the other hand, elastic modulus decreased and elongation at break increased, both indicating a plasticizing effect of the residual CNSL, confirmed by crystallinity and MFI data. Differences in the thermal stability of composites were restricted to thermal behavior of main components. POLYM. COMPOS., 39:2662–2673, 2018. © 2016 Society of Plastics Engineers
    Type of Medium: Online Resource
    ISSN: 0272-8397 , 1548-0569
    URL: Issue
    URL: Article
    DOI: 10.1002/pc.v39.8
    DOI: 10.1002/pc.24257
    Language: English
    Publisher: Wiley
    Publication Date: 2018
    detail.hit.zdb_id: 1475935-4
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  • 5
    Online Resource
    Online Resource
    Evaluation of Accelerated Solvent Extraction (ASE) Followed by Post-condensation Step (SSP) to Extract Contaminants from PET Flakes
    SAGE Publications ; 2016
    In:  Progress in Rubber, Plastics and Recycling Technology Vol. 32, No. 2 ( 2016-05), p. 73-86
    Details
    In: Progress in Rubber, Plastics and Recycling Technology, SAGE Publications, Vol. 32, No. 2 ( 2016-05), p. 73-86
    Abstract: Aiming to reduce the overall energy consumption of PET super-clean technologies, without using hazardous and large amounts of solvents, this work deals with accelerated solvent extraction followed by solid state polymerization (ASE-SSP) as an alternative way to decontaminate recycled PET for direct food contact applications. The main effects of the extraction ASE parameters (temperature, flow rate and pressure) in extraction efficiency of toluene and benzophenone, used as model contaminants, from PET were evaluated using a first-order fractional experimental design. Subsequently, PET chips were submitted to a SSP process to remove residual acetone, used as the extractor solvent, from PET. Extraction yield was quantified by gas chromatography with flame ionization detector (GC-FID). Results showed that the only parameter that affects negatively the decontamination process was an increase in temperature. Moreover, the SSP process helped to remove residual acetone from PET reaching decontamination levels as high as the FDA recommendations for direct food contact packaging.
    Type of Medium: Online Resource
    ISSN: 1477-7606 , 1478-2413
    URL: Article
    DOI: 10.1177/147776061603200202
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2016
    detail.hit.zdb_id: 2110205-3
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