Mesoporous Bioglasses Enriched with Bioactive Agents for Bone Repair, with a Special Highlight of María Vallet-Regí’s Contribution

Throughout her impressive scientific career, Prof. María Vallet-Regí opened various research lines aimed at designing new bioceramics, including mesoporous bioactive glasses for bone tissue engineering applications. These bioactive glasses can be considered a spin-off of silica mesoporous materials because they are designed with a similar technical approach. Mesoporous glasses in addition to SiO2 contain significant amounts of other oxides, particularly CaO and P2O5 and therefore, they exhibit quite different properties and clinical applications than mesoporous silica compounds. Both materials exhibit ordered mesoporous structures with a very narrow pore size distribution that are achieved by using surfactants during their synthesis. The characteristics of mesoporous glasses made them suitable to be enriched with various osteogenic agents, namely inorganic ions and biopeptides as well as mesenchymal cells. In the present review, we summarize the evolution of mesoporous bioactive glasses research for bone repair, with a special highlight on the impact of Prof. María Vallet-Regí´s contribution to the field.

Transfer or Translation? Rethinking Traveling Technologies from the Global South

Technology flows are becoming increasingly diverse in the twenty-first century, calling for an update of concepts and frameworks. Reflecting on the inherent tensions of technology transfer, including its technocratic dreams, insensitivity to technological materiality, and narrow focus on certain human actors, we propose technology translation as a complementary conceptual framework to understand traveling technologies. Taking a socio-technical approach, technology translation views artifacts as socially shaped with distributed agency, which makes technology flows unstable and unpredictable. In so doing, we develop a typology to explain five technology flow scenarios, shedding new light on the mechanisms of technology traveling by foregrounding the role of translators. Last, we discuss the politics of translation and elaborate how technology translation opens new space to engage with the complexity and uncertainty of technology flows, especially in the Global South.

A Technical Approach for Promotion of Yakshagana - A Literature Survey

Background/Purpose: Yakshagana is a theatre style that combines varieties of make-up styles and dressing styles depending on the type of character or role that is to be played on the stage. This article briefly discusses certain areas of Yakshagana where technology can be used for object detection and make-up recognition to classify and identify the characters. Objective: The main objective of this literature survey is to summarize the techniques used to identify different objects in a Yakahagana image & to identify the different makeup styles to recognize the type of characters. This paper also recommends the technical methods that can be used to promote Yakshagana. Methodology: Information is collected from various scholarly articles, books, and web pages. Findings/Results: Based on the analysis of the papers reviewed, it is observed that, no much work is carried out in the field of object detection & make-up detection in Yakshagana. This survey paper recommends techniques and the methodology that can be applied to the Yakshanaga field to identify and classify the objects and detect the patterns in makeup in Yakshagana roles. Limitations: The study is limited to crown & jewelry detection and pattern recognition in facial makeup in Yakshagana Originality: This paper focuses on the summary of techniques used to identify the objects, facial recognition, and pattern in make-up detection. Paper Type: A Literature survey paper on techniques and methods used to meet the required objectives.

Radiofrequency Ablation of Spine Metastases: A Clinical and Technical Approach

Percutaneous radiofrequency ablation (RFA) is an integral component of the multidisciplinary treatment algorithm for both local tumor control and palliation of painful spine metastases. This minimally invasive therapy complements additional treatment strategies, such as pain medications, systemic chemotherapy, surgical resection, and radiotherapy. The location and size of the metastatic lesion dictate preprocedure planning and the technical approach. For example, ablation of lesions along the spinal canal, within the posterior vertebral elements, or with paraspinal soft tissue extension are associated with a higher risk of injury to adjacent spinal nerves. Additional interventions may be indicated in conjunction with RFA. For example, ablation of vertebral body lesions can precipitate new, or exacerbate existing, pathologic vertebral compression fractures that can be prevented with vertebral augmentation. This article reviews the indications, clinical work-up, and technical approach for RFA of spine metastases.

Multiplicity of solutions for Robin problem involving the p(x)-laplacian

This paper is concerned with the existence and multiplicity of solutions for p(x)-Laplacian equations with Robin boundary condition. Our technical approach is based on variational methods.