Relevant bibliographies by topics / Alginet, Spain

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Academic literature on the topic 'Alginet, Spain'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Alginet, Spain"

1

Moliner, Cristina, Roberto Teruel-Juanes, Carmem Primaz, Jose Badia, Barbara Bosio, Pilar Campíns-Falcó, Carmen Molíns-Legua, et al. "Reduction of Nitrates in Waste Water through the Valorization of Rice Straw: LIFE LIBERNITRATE Project." Sustainability 10, no. 9 (August 24, 2018): 3007. http://dx.doi.org/10.3390/su10093007.

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An improved and more sustainable waste management system is required for successful development of technologies based on renewable sources. Rice straw is submitted to controlled combustion reactions and the produced ashes are chemically treated to produce silica. After a chemical activation step, the activated silica shows potential as an adsorbent agent and will be used to remove the excess of nitrates in groundwater and wells in the area of Alginet (Valencia, Spain), selected as a vulnerable zone within the Nitrates Directive. The demonstration activity aims to have a local impact on municipalities of 200 inhabitants or fewer, decreasing from current nitrate concentrations close to 50 mg/L, to a target of 25 mg/L. In a successive step, the methodology will be transferred to other municipalities with similar nitrate problems (Piemonte, Italy) and replicated to remove different pollutants such as manure (the Netherlands) and waste waters from the textile industry (Italy).
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2

Forero-Cujiño, Mario Andres, Luis Carlos Montengro Ruiz, Gabriel Antonio Pinilla-Agudelo, and Luz Marina Melgarejo-Muñoz. "INMOVILIZACIÓN DE LAS MICROALGAS Scenedesmus ovalternus (Scenedesmaceae) Y Chlorella vulgaris (Chlorellaceae) EN ESFERAS DE ALGINATO DE CALCIO." Acta Biológica Colombiana 21, no. 2 (April 5, 2016): 437–42. http://dx.doi.org/10.15446/abc.v21n2.51253.

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<p>En este trabajo se describe la técnica de inmovilización de microalgas en esferas de alginato de calcio. Se emplearon las especies Scenedesmus ovalternus y Chlorella vulgaris, se determinó la estabilidad de las esferas, la cinética de crecimiento y la concentración de las microalgas en el interior de las esferas. Chlorella vulgaris alcanzó mayores densidades poblacionales y tasas de crecimiento más altas cuando se inmovilizó en concentraciones del 10 % v/v con el alginato (1,31*10<span>6 </span>cél/ml). Para Scenedesmus ovalternus se observó una mayor densidad poblacional y una mayor tasa de crecimiento cuando se inmovilizó en concentraciones del 20 % v/v (7,06*10<span>5 </span>cél/ml). Estos resultados son útiles para aplicaciones prácticas de las algas encapsuladas, tales como el biomonitoreo o la biorremediación.</p><p><strong>Immobilization of Microalgae<em> Scenedesmus ovalternus</em> (Scenedesmaceae) and <em>Chlorella vulgaris</em> (Chlorellaceae) in Calcium Alginate Beads</strong></p><p>This paper describes the immobilization technique of microalgae in calcium alginate beads. Scenedesmus ovalternus and Chlorella vulgaris species were used. The stability of beads, the kinetics of growth and the concentrations of microalgae inside the beads were determined. The higher density and the upper growth rate of Chlorella vulgaris occurred when it was immobilized in alginate at a concentration of 10 %v/v (1,31*10<span>6 </span>cél/ml). Scenedesmus ovalternus achieved a higher population density and an elevated growth rate when it was immobilized at a concentration of 20 % v/v (7,06*10<span>5 </span>cél/ml). These results are useful for subsequent applications of the encapsulated algae, such as biomonitoring and bioremediation.</p>
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3

Fajarwati, Febi Indah, Muhammad Arsyik Kurniawan, Mayla Nur Fatima, and Rosani Fikrina. "Penghilangan Zat Warna menggunakan Kompleks Polielektrolit Kitosan-Alginat." JPSCR : Journal of Pharmaceutical Science and Clinical Research 3, no. 1 (March 15, 2018): 36. http://dx.doi.org/10.20961/jpscr.v3i1.16268.

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<span lang="EN-GB">Telah dilakukan sintesis </span><span>kompleks polielektrolit (PEC)</span><span>kitosan-alginat </span><span lang="EN-GB">dalam bentuk film dan <em>beads</em>. </span><span>Material</span><span lang="EN-GB"> dibuat dengan menggunakan biopolimer kitosan dan alginat yang bersifat </span><span>ramah lingkungan</span><span lang="EN-GB"> untuk pengujian adsorpsi terhadap zat warna. Karakterisasi</span><span> PEC kitosan-alginat</span><span lang="EN-GB"> dilakukan dengan FTIR</span><span lang="IN">(</span><em><span>Fourier Transform Infra Red</span></em><span lang="EN-GB">)</span><span lang="IN">,</span><span lang="EN-GB"> uji stabilitas medium asam basa serta uji kapasitas adsorpsi terhadap zat warna. Hasil karakterisasi menunjukan terjadinya pergesaran vibrasi pada hasil sintesis yang semakin tajam dan</span><span> PEC kitosan-alginat </span><span lang="EN-GB">stabil pada pH &gt;4. Kapasitas adsorpsi </span><span lang="IN">optimum </span><span lang="EN-GB">diperoleh sebesar </span><span>0,676 </span><span lang="EN-GB">mg/g </span><span lang="IN">pada menit ke- 45 </span><span lang="EN-GB">untuk </span><span>PEC kitosan-alginat dalam bentuk </span><em><span lang="IN">beads</span></em><span lang="EN-GB"> dan </span><span>0,0135 </span><span lang="EN-GB">mg/g</span><span lang="IN"> pada menit ke-30</span><span lang="EN-GB"> untuk</span><span> bentuk </span><span lang="IN">film. Model kinetika semua adsorben</span><span lang="IN">menunjukkan </span><span lang="EN-GB">mengikuti orde dua semu</span><span lang="IN">.</span>
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4

Angelina, Amelia Cahya, Ervia Yudiati, and Delianis Pringgenies. "Potential of Sodium Alginate in Sargassum sp. in Lotion Preparation to Treat Incision Wound in Mice." Biosaintifika: Journal of Biology & Biology Education 13, no. 1 (April 5, 2021): 99–105. http://dx.doi.org/10.15294/biosaintifika.v13i1.22539.

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Sargassum sp. is a known genus of brown seaweed whose dominant component is alginic acid or alginate. Various studies found that alginate having proinflammatory activity, so it may have potential to improve the wound healing process. This study aimed to obtain sodium alginate extract and to know the potency of the sodium alginate extract in incision wound treatment in mice abdomen. Lotion application was performed once a day in a span of five consecutive days. Observation on the wound was carried out to obtain data on blood coagulation, tissue reparation, and fibroblast development rate on the wound using histology. The results showed that the average yield from the Sargassum sp. extraction process was 31.3%. Quality control of the prepared lotion included organoleptic test; light brown coloration, lotion specific odor, semi- solid texture. The acidity of the lotion was measured as 6.61 with 6.731 cp of viscosity. The lotion adhesiveness test showed 0.21 seconds and the lotion was shown to be oil-in-water. Application of the lotion on incision wounds made in the abdomen of rats showed blood coagulation on the first day and onset of wound reparation process on the second day. Wound observation by the third day showed that the inflicted area had undergone a near-complete reparation. The study also showed that on the fifth day of reparation Sargassum sp. extract lotion treatment group showed fibroblast formation, as opposed to the non-extract lotion treatment group. Previous study use alginates as wound dressing material, but in this study alginate used as active ingredient in wound healing treatment. Therefore, this study concludes that sodium alginate in Sargassum sp. seaweed has a potential application in the field of medicine.
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Trujillo-Roldán, Mauricio A., John Fredy Monsalve-Gil, Angélica Maria Cuesta-Álvarez, and Norma A. Valdez-Cruz. "The production, molecular weight and viscosifying power of alginate produced by Azotobacter vinelandii is affected by the carbon source in submerged cultures." DYNA 82, no. 194 (December 21, 2015): 21–26. http://dx.doi.org/10.15446/dyna.v82n194.44201.

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Alginate is a linear polymer composed of <span style="font-family: symbol;">b</span>-1,4 linked mannuronic acid and its epimer, <span style="font-family: symbol;">a</span>-L-guluronic acid, and frequently extracted from marine algae, as from bacteria such as Azotobacter and Pseudomonas. Here, we show the impact of conventional and unconventional carbon sources on A. vinelandii growth, alginate production, its mean molecular weight (MMW) and its viscosifying power. Starting with 20 g/L of sugars, the highest biomass concentration was obtained using deproteinized and hydrolyzed whey (6.67±0.72 g/L), and sugarcane juice (6.68±0.45 g/L). However, the maximum alginate production was achieved using sucrose (5.11±0.37 g/L), as well the highest alginate yield and specific productivity. Otherwise, the higher alginate MMW was obtained using sugarcane juice (1203±120 kDa), and the higher viscosifying power was obtained using deproteinized/ hydrolyzed whey (23.8±2.6 cps L/galg). This information suggests that it is possible to manipulate the productivity and molecular characteristics of alginates, as a function of the carbon source used. All this, together with the knowledge of the effects of environmental conditions will allow for high yields of high added value biopolymers.
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6

Punyokun, Kawin, Ratchanee Hongprayoon, Prapansak Srisapoome, and Theerapol Sirinarumitre. "Influence of Chitosan-Alginate Microcapsules Containing Anti-Vibrio Harveyi IgY in the Gastrointestinal Tract Simulation." Modern Applied Science 9, no. 12 (November 1, 2015): 110. http://dx.doi.org/10.5539/mas.v9n12p110.

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<p class="zhengwen"><span lang="EN-GB">Egg yolk immunoglobulin (IgY) is an alternative treatment for the prevention of gastrointestinal infections in pigs, cows, chickens and fish. In our previous report, we preliminarily proved that anti-<em>V. harveyi</em> IgY had effective potential to control luminous disease in black tiger shrimp. However,</span><span lang="EN-GB">IgY activity may be reduced or destroyed by gastric conditions, particularly low pH and digestive enzymes. Therefore, it is necessary to find an effective method to preserve the therapeutic function of IgY antibodies during gastric passage. Chitosan-alginate microcapsules have been developed to protect IgY from gastric inactivation. The processing factors included different forms of chitosan and alginate, while a CaCl2 concentration and encapsulation medium was investigated. The optimum results were obtained under the following conditions: High Mw chitosan concentration 0.2% (w/v), medium viscosity alginate concentration 2% (w/v), CaCl2 concentration 0.5% (w/v). The stability of IgY in simulated gastric fluid (SGF, pH 1.2) was greatly improved by encapsulation in chitosan-alginate microcapsules, and retained greater than 90% activity after 2 h exposure to SGF. Less than 10% IgY was released upon the microcapsules’ exposure to SGF for 2 h, and more than 80% IgY was released upon the microcapsules’ exposure to simulated intestinal fluid (SIF, pH 6.8) for 16 h. </span></p>
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7

Ionita, Gabriela, Ana Maria Ariciu, David K. Smith, and Victor Chechik. "Ion exchange in alginate gels – dynamic behaviour revealed by electron paramagnetic resonance." Soft Matter 11, no. 46 (2015): 8968–74. http://dx.doi.org/10.1039/c5sm02062j.

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8

Xiong, Kun, Jing Zhang, Haishan Shi, Jingqun Liu, Huae Wu, Haiyan Li, and Jiandong Ye. "Preparation and in vitro cell-biological performance of sodium alginate/nano-zinc silicate co-modified calcium silicate bioceramics." RSC Advances 5, no. 11 (2015): 8329–39. http://dx.doi.org/10.1039/c4ra15128c.

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9

Wang, Wen Chao, Xiao Mei Ma, Wei Huan Xu, Yin Yin Li, Quan Ji, and Yan Zhi Xia. "Investigation on Temperature-Sensitive Poly (N-Vinylcaprolactam) Modified Calcium Alginate Microspheres." Advanced Materials Research 631-632 (January 2013): 145–49. http://dx.doi.org/10.4028/www.scientific.net/amr.631-632.145.

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Temperature-sensitive calcium alginate-based microspheres were prepared in two steps. Firstly, free-radical polymerization of temperature-sensitive N-vinylcaprolactam monomer was performed in aqueous solution of sodium alginate, yielding a mixed aqueous solution bearing temperature-sensitivity composed of poly(N-vinylcaprolactam), sodium alginate-graft- poly(N-vinylcaprolactam) and sodium alginate. Then temperature-sensitive composite microspheres were prepared by inverse emulsification-crosslinking using the as-prepared solution as water phase, n-hexane as oil phase, Span-85 and Tween-85 as emulsifiers and calcium chloride as crosslinker respectively. The morphology and temperature-sensitivity of the composite microspheres were investigated by scanning electron microscope and turbidity method respectively. The controlled release behavior of the microspheres towards temperature was investigated preliminarily using berberine as a model drug.
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Danarto, YC, Rochmadi Rochmadi, and Budhijanto Budhijanto. "Microencapsulation of Riboflavin (Vitamine B2) using Alginate and Chitosan : Effect of Surfactant Span 80 upon Microcapsule Diameter." Equilibrium Journal of Chemical Engineering 2, no. 2 (July 10, 2018): 47. http://dx.doi.org/10.20961/equilibrium.v2i2.40434.

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<p>Riboflavin (vitamin B2) plays an important role in the growth and maintenance of human metabolism. Riboflavin is the highly sensitive and unstable to environmental influences such as light, reducing agents and pH. Riboflavin is protected by forming it into microcapsules with sodium alginate as a matrix and coated with chitosan reinforced with glutraldehid crosslinking. This study aims to study the process of microencapsulation of riboflavin with sodium alginate and chitosan and is emphasized to study the effect surfactant span 80 upon the size of the microcapsules formed. Based on microcapsule size and its distribution, it can be concluded that more span 80 added to paraffin oil will reduce the size of microcapsule that is formed</p>
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Conference papers on the topic "Alginet, Spain"

1

Bennedsen, Jacob, and Karen Chang Yan. "On Continuum Based Multiscale Modelling of Engineered Soft Tissue Constructs." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-88482.

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Engineered tissue constructs are assembled through combining scaffolds, cells and biologically active molecules for restoring, maintaining, or improving damaged tissues or whole organs. Cells in engineered tissue constructs often experience mechanical forces during the fabrication process, maturation process, and under in vivo conditions. These mechanical forces/stimuli induce cellular responses and affect cell viability, proliferation, and differentiation. While it is critical to understand the mechanical milieu of cells in tissue constructs, it is also extremely challenging due to the time and length scale span. Multiscale modeling approaches have been emerged to provide linkage among different length scale. One of the approaches is continuum based multiscale modeling to link organ, tissue and cellular levels. A representative volume element (RVE) with periodic or random microstructure serves as a vehicle to connect different length scales. This study focuses on effects of RVE selection, microstructure, and boundary conditions on the mechanical environment at cellular level. In particular, cell embedded alginate tissue constructs were studied. Hyperelastic models were used for modeling alginate and cells. Multi-cellular FE models were generated. The results of the average properties and the stress/strain experienced by cells were compared under different conditions.
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