Mafalda Costa
Biographic Data
| ID | 3584987 |
|---|---|
| NAME | Mafalda Costa |
| GIVEN NAMES | Mafalda |
| FAMILY NAME | Costa |
| SIGNATURE | COSTA M |
| AFFILIATIONS | University of Évora |
| ORCID | 0000-0001-8764-2310 |
| VERIFIED | Yes |
| TOTAL WORKS | 16 |
| TOTAL CITATIONS | 19 |
| AUTHOR COUNT | 16 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2015 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 3 |
Production Technology and Provenance of Dvāravatī Glass Beads from Khu Bua, Central Thailand: An Archaeometric Study
The production technology and provenance of 22 beads from the Dvāravatī-period site of Khok Phithak at Khu Bua, central Thailand (6th–11th centuries CE), was investigated using a multi-analytical approach combining VP-SEM-EDS, LA-ICP-MS, and micro-Raman spectroscopy. Macroscopic and microstructural evidence indicates that most of the glass beads were manufactured by the drawn-tube method, consistent with the supply of imported Indo-Pacific beads …
Try It Before You Buy It: A Non-Invasive Authenticity Assessment of a Purported Phoenician Head-Shaped Pendant (Cáceres, Spain)
Museums may acquire archaeological artefacts discovered by non-specialists or amateur archaeologists, holding the potential to promote the safeguarding of cultural heritage by integrating the local community in their activities. However, this also creates an opportunity for the fraudulent sale of modern forgeries presented as archaeological artefacts, resulting in the need for a critical assessment of the artefact’s authenticity prior to acquisit…
The Impact of a Community-Based Cardiovascular Disease Prevention – Coimbra United by the Heart
Cardiovascular disease is the main cause of death in Portugal and one of the most important causes of morbidity and incapacity in Portugal. Since 2016, through the project "Coimbra United by the Heart" (CUH) municipalities scaled-up efforts on cardiovascular disease prevention, creating a community health network that: 1) early identifies citizens with cardiovascular risk; 2) provide awareness-raising strategies for a healthy lifestyle; 3) improv…
Improving Information on Over-looked Generalists: Occurrence and Mitochondrial DNA Diversity of Campbell’s (Cercopithecus campbelli) and Green Monkeys (Chlorocebus sabaeus) in Guinea–Bissau, West Afri…
Non-threatened primates are often overlooked in conservation efforts despite their increasing vulnerability to local extirpation. Campbell’s ( Cercopithecus campbelli ) and green monkeys ( Chlorocebus sabaeus ) are sympatric medium-sized West African guenons (tribe Cercopithecini) whose intraspecific genetic diversity remains understudied in most of their distribution. Both species are ecological generalists and are globally considered non-threat…
Modern Muralists in the Spotlight: Technical and Material Characteristics of the 1946–1949 Mural Paintings by Almada Negreiros in Lisbon (Part1)
This paper presents the first insight into how Almada Negreiros, a key artist of the first generation of modernism in Portugal, created his mural painting masterpiece in the maritime station of Rocha do Conde de Óbidos in Lisbon. This set of six monumental mural paintings dates from 1946 to 1949 and is considered Almada’s artistic epitome. As part of the ALMADA project: Unveiling the mural painting art of Almada Negreiros, the murals are being an…
An Archaeometric Analysis of Black-Appearing Iron Age Glass Beads from Vinha das Caliças 4 (Portugal)
Phoenician colonisation of the Iberian Peninsula in the 1st millennium BCE introduced many novel and luxurious goods to the local populations of the Western Mediterranean. Among them, black-appearing glass beads are characteristic of indigenous female burials in Southern Portugal during the 6th century BCE. This study presents the results of the first comprehensive archaeometric investigation of black-appearing glass from Vinha das Caliças 4 (Por…
Optimization of the Application of Commercial Hydrophobic Coatings for Natural Stone Protection and Preservation
Natural stone has been used worldwide in the construction of archaeological and historical heritage. However, its preservation continues to be threatened by weathering and degradation phenomena. Water is widely recognized as the most threatening external component that contributes to stone deterioration, increasing the need for the development of protective hydrophobic coatings to eliminate water penetration. This study intends to contribute to t…
Known Glass Compositions in Iron Age Europe—Current Synthesis and Emerging Questions
Ancient glass has been extensively studied from a technological and raw material provenance perspective since the middle of the 20th century. With the rising applications of analytical techniques in the field of Heritage Studies, the last two decades saw an exponential increase in publications on ancient and historical glass technology from around the globe. Given the amount of works on glass chemical composition, it is surprising to note that th…
Unveiling the Effectiveness of Innovative Commercial Coatings Used for the Preservation of Natural Stone—A Contribution
The preservation of natural stone heritage is still a major challenge for the scientific community. This topic assumes a greater importance since it impacts economic and socio-cultural values. Recent research has indicated that water action and microorganism activity are among the major contributors to the deterioration of this material. Despite the emergence of new protective solutions in the market, some constraints still need to be overcome. T…
Personal adornments in West-Central Africa-the case study of a talc bead from the Kongo Kingdom (Mbanza Kongo, Angola)
A mustard-gold-colored talc bead was recovered during the 2014 excavation campaign carried out in Lumbu (Mbanza Kongo, Angola) together with the nineteenth-century glass trade beads imported from Bohemia and Venice. Results from this multi-analytical and minimally invasive study suggest that this bead may have been brought to the kingdom's capital by means of an established intra-kingdom trade network or as an offering intended for the king or a …
New approaches for the study of faience using beads from Southern Portugal
A collection of 30 faience beads recovered from the Iron Age necropolis of Vinha das Caliças 4 (Beja, Portugal) was analyzed in order to identify their production technology and provide insights into their possible provenance. The multi-analytical approach employed, combining laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), variable pressure scanning electron microscope coupled with energy dispersive X-ray spectrometry (VP…
On the Two Working Palettes of Almada Negreiros at DN Building in Lisbon (1939–1940): First Analytical Approach and Insight on the Use of Cd Based Pigments
This paper reports the first analytical approach carried out on two working palettes by Portuguese modernist master Almada Negreiros, found in 1991 behind old wood cabinets at the DN building in Lisbon. This is the only known occasion Almada left behind the color experiments done before starting to paint in the nearby walls and as such, it is a unique opportunity to analyze the materials and painting techniques that were originally used. The anal…
Lithic arrowheads: Siliceous raw material sources and technology in Southern Portugal
This analysis focused on one hundred and fifteen lithic arrowheads recovered from the Zambujeiro and Mitra 2 dolmens, funerary monuments in Évora, Portugal. These were analyzed by noninvasive and minimally invasive analytical techniques, including handheld X‐ray fluorescence (hXRF), variable pressure scanning electron microscope coupled with energy dispersive X‐ray spectrometry (VP‐SEM‐EDS), and laser ablation inductively coupled plasma mass spec…
An insight into the provenance of the Phoenician-Punic glass beads of the necropolis of Vinha das Caliças (Beja, Portugal)
Chasing a ghost: Notes on the present distribution and conservation of the sooty mangabey (Cercocebus atys) in Guinea-Bissau, West Africa
The West-African sooty mangabey ( Cercocebus atys ) is threatened by habitat loss, hunting for meat consumption, and mortality during crop-foraging events. The species’ overall demographic trend is unknown. Presence and distribution in Guinea-Bissau, a country neighbored by Senegal and Republic of Guinea, was confirmed in 1946 but the species was declared extinct in 1989 and not observed in subsequent countrywide expeditions. Narratives of its pr…
Lithic economy and territory of Epipaleolithic hunter–gatherers in the Middle Tagus: The case of Pena d'Água (Portugal)
An insight into the provenance of the Phoenician-Punic glass beads of the necropolis of Vinha das Caliças (Beja, Portugal)
New approaches for the study of faience using beads from Southern Portugal
A collection of 30 faience beads recovered from the Iron Age necropolis of Vinha das Caliças 4 (Beja, Portugal) was analyzed in order to identify their production technology and provide insights into their possible provenance. The multi-analytical approach employed, combining laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), variable pressure scanning electron microscope coupled with energy dispersive X-ray spectrometry (VP…
Lithic economy and territory of Epipaleolithic hunter–gatherers in the Middle Tagus: The case of Pena d'Água (Portugal)
An Archaeometric Analysis of Black-Appearing Iron Age Glass Beads from Vinha das Caliças 4 (Portugal)
Phoenician colonisation of the Iberian Peninsula in the 1st millennium BCE introduced many novel and luxurious goods to the local populations of the Western Mediterranean. Among them, black-appearing glass beads are characteristic of indigenous female burials in Southern Portugal during the 6th century BCE. This study presents the results of the first comprehensive archaeometric investigation of black-appearing glass from Vinha das Caliças 4 (Por…
Lithic economy and territory of Epipaleolithic hunter–gatherers in the Middle Tagus: The case of Pena d'Água (Portugal)
Chasing a ghost: Notes on the present distribution and conservation of the sooty mangabey (Cercocebus atys) in Guinea-Bissau, West Africa
The West-African sooty mangabey ( Cercocebus atys ) is threatened by habitat loss, hunting for meat consumption, and mortality during crop-foraging events. The species’ overall demographic trend is unknown. Presence and distribution in Guinea-Bissau, a country neighbored by Senegal and Republic of Guinea, was confirmed in 1946 but the species was declared extinct in 1989 and not observed in subsequent countrywide expeditions. Narratives of its pr…
On the Two Working Palettes of Almada Negreiros at DN Building in Lisbon (1939–1940): First Analytical Approach and Insight on the Use of Cd Based Pigments
This paper reports the first analytical approach carried out on two working palettes by Portuguese modernist master Almada Negreiros, found in 1991 behind old wood cabinets at the DN building in Lisbon. This is the only known occasion Almada left behind the color experiments done before starting to paint in the nearby walls and as such, it is a unique opportunity to analyze the materials and painting techniques that were originally used. The anal…
Lithic arrowheads: Siliceous raw material sources and technology in Southern Portugal
This analysis focused on one hundred and fifteen lithic arrowheads recovered from the Zambujeiro and Mitra 2 dolmens, funerary monuments in Évora, Portugal. These were analyzed by noninvasive and minimally invasive analytical techniques, including handheld X‐ray fluorescence (hXRF), variable pressure scanning electron microscope coupled with energy dispersive X‐ray spectrometry (VP‐SEM‐EDS), and laser ablation inductively coupled plasma mass spec…
An insight into the provenance of the Phoenician-Punic glass beads of the necropolis of Vinha das Caliças (Beja, Portugal)
New approaches for the study of faience using beads from Southern Portugal
A collection of 30 faience beads recovered from the Iron Age necropolis of Vinha das Caliças 4 (Beja, Portugal) was analyzed in order to identify their production technology and provide insights into their possible provenance. The multi-analytical approach employed, combining laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), variable pressure scanning electron microscope coupled with energy dispersive X-ray spectrometry (VP…
Known Glass Compositions in Iron Age Europe—Current Synthesis and Emerging Questions
Ancient glass has been extensively studied from a technological and raw material provenance perspective since the middle of the 20th century. With the rising applications of analytical techniques in the field of Heritage Studies, the last two decades saw an exponential increase in publications on ancient and historical glass technology from around the globe. Given the amount of works on glass chemical composition, it is surprising to note that th…
Unveiling the Effectiveness of Innovative Commercial Coatings Used for the Preservation of Natural Stone—A Contribution
The preservation of natural stone heritage is still a major challenge for the scientific community. This topic assumes a greater importance since it impacts economic and socio-cultural values. Recent research has indicated that water action and microorganism activity are among the major contributors to the deterioration of this material. Despite the emergence of new protective solutions in the market, some constraints still need to be overcome. T…
Personal adornments in West-Central Africa-the case study of a talc bead from the Kongo Kingdom (Mbanza Kongo, Angola)
A mustard-gold-colored talc bead was recovered during the 2014 excavation campaign carried out in Lumbu (Mbanza Kongo, Angola) together with the nineteenth-century glass trade beads imported from Bohemia and Venice. Results from this multi-analytical and minimally invasive study suggest that this bead may have been brought to the kingdom's capital by means of an established intra-kingdom trade network or as an offering intended for the king or a …
Modern Muralists in the Spotlight: Technical and Material Characteristics of the 1946–1949 Mural Paintings by Almada Negreiros in Lisbon (Part1)
This paper presents the first insight into how Almada Negreiros, a key artist of the first generation of modernism in Portugal, created his mural painting masterpiece in the maritime station of Rocha do Conde de Óbidos in Lisbon. This set of six monumental mural paintings dates from 1946 to 1949 and is considered Almada’s artistic epitome. As part of the ALMADA project: Unveiling the mural painting art of Almada Negreiros, the murals are being an…
An Archaeometric Analysis of Black-Appearing Iron Age Glass Beads from Vinha das Caliças 4 (Portugal)
Phoenician colonisation of the Iberian Peninsula in the 1st millennium BCE introduced many novel and luxurious goods to the local populations of the Western Mediterranean. Among them, black-appearing glass beads are characteristic of indigenous female burials in Southern Portugal during the 6th century BCE. This study presents the results of the first comprehensive archaeometric investigation of black-appearing glass from Vinha das Caliças 4 (Por…
Optimization of the Application of Commercial Hydrophobic Coatings for Natural Stone Protection and Preservation
Natural stone has been used worldwide in the construction of archaeological and historical heritage. However, its preservation continues to be threatened by weathering and degradation phenomena. Water is widely recognized as the most threatening external component that contributes to stone deterioration, increasing the need for the development of protective hydrophobic coatings to eliminate water penetration. This study intends to contribute to t…
Try It Before You Buy It: A Non-Invasive Authenticity Assessment of a Purported Phoenician Head-Shaped Pendant (Cáceres, Spain)
Museums may acquire archaeological artefacts discovered by non-specialists or amateur archaeologists, holding the potential to promote the safeguarding of cultural heritage by integrating the local community in their activities. However, this also creates an opportunity for the fraudulent sale of modern forgeries presented as archaeological artefacts, resulting in the need for a critical assessment of the artefact’s authenticity prior to acquisit…
The Impact of a Community-Based Cardiovascular Disease Prevention – Coimbra United by the Heart
Cardiovascular disease is the main cause of death in Portugal and one of the most important causes of morbidity and incapacity in Portugal. Since 2016, through the project "Coimbra United by the Heart" (CUH) municipalities scaled-up efforts on cardiovascular disease prevention, creating a community health network that: 1) early identifies citizens with cardiovascular risk; 2) provide awareness-raising strategies for a healthy lifestyle; 3) improv…
Improving Information on Over-looked Generalists: Occurrence and Mitochondrial DNA Diversity of Campbell’s (Cercopithecus campbelli) and Green Monkeys (Chlorocebus sabaeus) in Guinea–Bissau, West Afri…
Non-threatened primates are often overlooked in conservation efforts despite their increasing vulnerability to local extirpation. Campbell’s ( Cercopithecus campbelli ) and green monkeys ( Chlorocebus sabaeus ) are sympatric medium-sized West African guenons (tribe Cercopithecini) whose intraspecific genetic diversity remains understudied in most of their distribution. Both species are ecological generalists and are globally considered non-threat…
Production Technology and Provenance of Dvāravatī Glass Beads from Khu Bua, Central Thailand: An Archaeometric Study
The production technology and provenance of 22 beads from the Dvāravatī-period site of Khok Phithak at Khu Bua, central Thailand (6th–11th centuries CE), was investigated using a multi-analytical approach combining VP-SEM-EDS, LA-ICP-MS, and micro-Raman spectroscopy. Macroscopic and microstructural evidence indicates that most of the glass beads were manufactured by the drawn-tube method, consistent with the supply of imported Indo-Pacific beads …
Geography (9 works) · Geology (9 works) · Archaeology (8 works) · Cultural Heritage Materials Analysis (8 works) · Building materials and conservation (7 works) · Archaeology and ancient environmental studies (5 works) · Geochemistry (5 works) · Materials Science (5 works) · Provenance (5 works) · Bead (4 works)