Search results for "PULP"
showing 10 items of 717 documents
Efficiency of Daphnia magna in removal of green microalgae cultivated in Nordic recirculating aquaculture system wastewater
2020
The increase of global aquaculture production has boosted the development of recirculating aquaculture systems not only because they reduce water use but also provide opportunities for waste management and the use of released nutrients. The dissolved nutrients can be efficiently removed from recirculating aquaculture system wastewater by microalgae, and microalgae can be harvested from the wastewater with low costs by zooplankton such as Daphnia. The purpose of this study was to evaluate the feasibility of using microalgae and Daphnia for bioremediation of recirculating aquaculture system wastewater in Nordic conditions. We evaluated the growth and filtration efficiency of the waterflea Dap…
Desarrollo de una nueva prueba diagnóstica para el diagnóstico de la vitalidad pulpar
2020
Las enfermedades que afectan a la pulpa dental son inflamatorias o infecciosas en su origen. En ambos casos, la microcirculación dentro del tejido pulpar sano inicia una respuesta inflamatoria como parte de un mecanismo defensivo para mantener la integridad de la pulpa dental. Así pues, se acepta que el aporte sanguí́neo a este tejido es el mejor indicador del verdadero estado de la pulpa dental . Entre las pruebas diagnósticas que pueden ser utilizadas en el diagnóstico de la patología pulpar se encuentran las conocidas como «pruebas de vitalidad pulpar», las cuales, en realidad, deberían llamarse «pruebas de sensibilidad pulpar», ya que recogen la respuesta del complejo dentino-pulpar ant…
Regeneración de cartílago mediante el uso de células madre de pulpa dental humanas (hDPSCs)
2020
El tejido cartilaginoso es un tejido fundamental, puesto que proporciona sostén a nuestro organismo. Cuando el cartílago articular se lesiona experimenta una regeneración compleja y limitada. Por ello es importante buscar alternativas y ampliar las soluciones que se están utilizando actualmente para tratar enfermedades en las que se produce la alteración del cartílago articular, como la osteoartritis. Con la base en esta idea, recientemente la ingeniería tisular ha desarrollado distintas herramientas para tratar de regenerar el cartílago cuando la regeneración por otras vías no es posible. Dentro de las estrategias que existen, se ha potenciado el uso de hidrogeles combinados con condrocito…
Combustion behavior of black liquors : droplet swelling and influence of liquor composition
2017
The combustion of black liquor (BL) in a recovery boiler is a central process in a kraft pulp mill for recovering the cooking chemicals and for producing heat and power. This work explored the most important combustion behavior of BL, the swelling of in-flight droplets, from the viewpoint of liquor composition. It also studied the combustion behavior of BL droplets obtained from two biorefining subprocesses (carbonation and hot-water pretreatment, HWP) and sulfur-free pulping alternatives (soda-anthraquinone (AQ) and oxygen-alkali pulping). The formation of a plastic state essential for the swelling of BL droplet was found to result from the melting of an array of carbohydrate-derived aliph…
Prickly pear pulp in the feeding of livestock ruminants: preliminary investigation
2019
In Sicily, the current increasing cultivation of Opuntia ficus-indica (L.) Mill. corresponds to a availability of prickly pears pulp (PPP) that residues from fruits processing for juice extraction, comprised of peel, pulp and seeds. This investigation aim to evaluate the nutritional traits of PPP for ruminants feeding, and the effect of potassium metabisulfite (PMB) as a natural stabilizer to limit initial rapid PPP fermentation. The by-product, collected in August, included 28% of peel and pulp (PP) and 72% of seeds on dry matter (DM), with seeds higher in ether extract (EE) and NDF and comparable for DM and crude protein (CP) (DM 35.5, 35.9 and 35.6%; EE 6.5, 3.6 and 8.5% DM; CP 6.5, 6.0 …
Closed tank pneumatic press application to improve Sauvignon Blanc wine quality and nutraceutical properties
2019
The machines used in the winemaking process directly affect the quality of wine and its nutraceutical properties. Grapes-pressing is a very important step in winemaking as it may promote the presence and/or absence of enzymatic processes on the must, leading to the creation of different products in terms of chemical composition, starting from the same grapes. The aim of the study was to compare two different pressing systems of Sauvignon Blanc grapes using an innovative pneumatic discontinuous closed tank press in two operating modes: the traditional pressing mode in presence of oxygen and the inert pressing mode, performed through grapes pressing under inert gas with nitrogen recovery. Che…
Strategic renewal : Can it be done profitably?
2022
Industry transformation requires strategic renewal at the level of individual firms. Executives then face the dilemma of choosing renewal paths in the face of uncertainty over the competitive environment of the future, and hence the profitability of potential strategies. This dilemma motivates us to study industry transformation from the perspective of strategic renewal among 208 large firms in the global pulp and paper industry. The findings of our qualitative comparative analysis show that only a minority of firms in our sample succeeded in profitable proactive renewal. Content-wise, there were similarities in the pursued strategies over the wider population, but only a few maintained sup…
Pregare sulla roccia. Pulpit Rock Church (Norvegia)
2017
Nel sud della Norvegia, a venticinque chilometri dalla città di Stravenger, in cima a un percorso tortuoso di quattro chilometri, dal fiume Forsand ai fiordi, si eleva un crinale roccioso che guarda il Mare del nord da un’altezza di circa seicento metri. L’altura è formata da uno straordinario costone da cui emerge, come uno sperone, una superficie regolare pianeggiante, conclusa da una parte a forma di pulpito (Pulpit Rock) da cui si può osservare l’immenso e silenzioso paesaggio. Per questo sito straordinario il bando del concorso di idee, proposto dall’Architecture Workshop in Rome, prevedeva la realizzazione di una chiesa temporanea. Tale richiesta è stata utilizzata per una riflessione…
Odorous volatile organic compounds in waste and wastewater management
2012
Molecular spectra of liquors as method of studying delignification process
2011
FTIR-spectra of dried compounds of black liquors after aspen kraft cooks of different duration were obtained. Twelve samples corresponding to changing H-factor value in limits 4-1010 were investigated. The parameters of selected bands corresponding to lignin fragments vibrations were calculated using mathematical treatment methods. It was revealed that the positions and bandwidths of these lignin bands did not change. During cook at the first stage (H-factor values 4-200) their intensities strongly increased with different rates. During the next time period when the H-factor values were more than 200 a slow phase with small changes of the bands intensities were revealed. The IR-spectra of b…