Capítols de llibre
http://hdl.handle.net/2117/14060
2024-03-28T23:09:02ZLa gestió de la mobilitat: impressió i visions de dos centres de la Universitat Politècnica de Catalunya
http://hdl.handle.net/2117/131495
La gestió de la mobilitat: impressió i visions de dos centres de la Universitat Politècnica de Catalunya
Pineda Soler, Eloi; Barahona Fuentes, Claudia
2019-04-08T14:53:58ZPineda Soler, EloiBarahona Fuentes, ClaudiaThe colour and golden shine of early silver Islamic lustre
http://hdl.handle.net/2117/26038
The colour and golden shine of early silver Islamic lustre
Gutierrez Neira, Carolina; Pradell Cara, Trinitat; Molera Marimon, Judit; Smith, Andrew D.; Climent Font, Aurelio; Tite, Michael S.
A selection of lustres including 9th century AD polychrome and 10th century AD
monochrome Abbasid lustres from Iraq, and 10th to 12th centuries AD Fatimid lustres from Egypt
and Syria is studied in the present paper. The selection is based on previous studies that
demonstrated that all of them contain metal silver nanoparticles and copper, which, when present,
appears either as Cuþ or Cu2þ dissolved in the glaze. They show different colours, green, yellow,
amber, and brown, and may also show or lack a golden-like reflectivity, which results mainly from
average size and concentration in the layer of the silver nanoparticles. In this paper, a depth profile
composition of the lustre layers is determined using Rutheford Backscattering Spectroscopy,
allowing the determination of the total silver content, concentration of silver, copper to silver ratio,
and thickness of the lustre layers. We show that the enhanced golden-like reflectivity occurs only
for layers with a high concentration of silver, and that the addition of PbO to the alkaline glaze
helps the formation of more concentrated layers. The results obtained provide new hints concerning the lead enrichment of the glazes during this period.
2015-01-22T18:45:08ZGutierrez Neira, CarolinaPradell Cara, TrinitatMolera Marimon, JuditSmith, Andrew D.Climent Font, AurelioTite, Michael S.A selection of lustres including 9th century AD polychrome and 10th century AD
monochrome Abbasid lustres from Iraq, and 10th to 12th centuries AD Fatimid lustres from Egypt
and Syria is studied in the present paper. The selection is based on previous studies that
demonstrated that all of them contain metal silver nanoparticles and copper, which, when present,
appears either as Cuþ or Cu2þ dissolved in the glaze. They show different colours, green, yellow,
amber, and brown, and may also show or lack a golden-like reflectivity, which results mainly from
average size and concentration in the layer of the silver nanoparticles. In this paper, a depth profile
composition of the lustre layers is determined using Rutheford Backscattering Spectroscopy,
allowing the determination of the total silver content, concentration of silver, copper to silver ratio,
and thickness of the lustre layers. We show that the enhanced golden-like reflectivity occurs only
for layers with a high concentration of silver, and that the addition of PbO to the alkaline glaze
helps the formation of more concentrated layers. The results obtained provide new hints concerning the lead enrichment of the glazes during this period.The ways of the lustre: looking for the tunisian connection
http://hdl.handle.net/2117/26037
The ways of the lustre: looking for the tunisian connection
Waksman, Yona; Capelli, Claudio; Pradell Cara, Trinitat; Molera Marimon, Judit
Recent excavations at the Fatimid and Zirid site of Sabra al-Mansuriya near Kairouan
(Tunisia) provide the first evidence of lustreware production in medieval Ifriqiya, in the 10th–11th
centuries AD. As the Fatimid dynasty moved from Ifriqiya to Egypt to establish its capital in Fustat
(Cairo), technological connections with the Egyptian lustreware could be expected. Tunisian
lustreware may also be the link in the transmission of the technique towards Muslim Spain. It
represents a new piece of the puzzle of understanding the diffusion of lustre technology from the
East to the West of the Mediterranean. The composition and microstructure of the bodies and
glazes, and the micro- and nano-structure of the lustre layer are compared in a preliminary approach to the technological relationships between Tunisian, Egyptian, and Spanish lustrewares.
2015-01-22T18:34:35ZWaksman, YonaCapelli, ClaudioPradell Cara, TrinitatMolera Marimon, JuditRecent excavations at the Fatimid and Zirid site of Sabra al-Mansuriya near Kairouan
(Tunisia) provide the first evidence of lustreware production in medieval Ifriqiya, in the 10th–11th
centuries AD. As the Fatimid dynasty moved from Ifriqiya to Egypt to establish its capital in Fustat
(Cairo), technological connections with the Egyptian lustreware could be expected. Tunisian
lustreware may also be the link in the transmission of the technique towards Muslim Spain. It
represents a new piece of the puzzle of understanding the diffusion of lustre technology from the
East to the West of the Mediterranean. The composition and microstructure of the bodies and
glazes, and the micro- and nano-structure of the lustre layer are compared in a preliminary approach to the technological relationships between Tunisian, Egyptian, and Spanish lustrewares.Effectiveness of Problem Based Learning for Engineering Curriculum
http://hdl.handle.net/2117/7832
Effectiveness of Problem Based Learning for Engineering Curriculum
Rojas Gregorio, José Ignacio; Prats Menéndez, Xavier; Villardi de Montlaur, Adeline de; Valero García, Miguel; García-Berro Montilla, Enrique
The main purpose of this paper is to describe the process by which an initially limited-range practical
experience, within the frame of a given subject in an aerospace engineering degree, might be expanded to
become the mother-subject itself. Particularly, the practical experience is a Model Rocket Workshop
(MRW), where students design, simulate, build, test and launch a small model rocket. The workshop is a
Problem Based Learning (PBL) experience that covers a wide spectrum of educational aspects, ranging
from theoretical disciplines, such as fluid dynamics and rocket dynamics, to topics more related to
experimental work and hardware utilization like the certification of the rockets, as well as the rocket
altitude measurements. Students get rapidly involved in the project, and acquire several practical and
transversal abilities, while developing a solid knowledge of the physics underlying aerospace engineering.
The case study shows some problems and improvements, academic results and lessons learned from the
PBL approach. Finally, a series of new ideas related to MRW and the subject it belongs to are presented.
The objective is to expand the MRW so that it embraces the totality of the activities that constitute this
mother-subject. As a consequence, the former would then become a new subject entirely based on PBL.
The strategy aims at enabling an optimum transition from conventional learning to PBL.
2010-06-25T10:27:13ZRojas Gregorio, José IgnacioPrats Menéndez, XavierVillardi de Montlaur, Adeline deValero García, MiguelGarcía-Berro Montilla, EnriqueThe main purpose of this paper is to describe the process by which an initially limited-range practical
experience, within the frame of a given subject in an aerospace engineering degree, might be expanded to
become the mother-subject itself. Particularly, the practical experience is a Model Rocket Workshop
(MRW), where students design, simulate, build, test and launch a small model rocket. The workshop is a
Problem Based Learning (PBL) experience that covers a wide spectrum of educational aspects, ranging
from theoretical disciplines, such as fluid dynamics and rocket dynamics, to topics more related to
experimental work and hardware utilization like the certification of the rockets, as well as the rocket
altitude measurements. Students get rapidly involved in the project, and acquire several practical and
transversal abilities, while developing a solid knowledge of the physics underlying aerospace engineering.
The case study shows some problems and improvements, academic results and lessons learned from the
PBL approach. Finally, a series of new ideas related to MRW and the subject it belongs to are presented.
The objective is to expand the MRW so that it embraces the totality of the activities that constitute this
mother-subject. As a consequence, the former would then become a new subject entirely based on PBL.
The strategy aims at enabling an optimum transition from conventional learning to PBL.