Beppo-SAX Observations of Galaxy Clusters

The high spatial resolution of the MECS experiment on board Beppo-SAX has encouraged a few scientists, including the author, to perform observations of galaxy clusters. Results from the analysis of the first few observed objects are encouraging. After having reviewed the Beppo-SAX observing program for galaxy clusters and referenced contributions to these proceedings by other authors on the same topic, I present results from the analysis of the Perseus cluster.Comment: 4 pages, 4 Postscript figures included. To appear in the proceedings of the ``Active X-ray Sky: Results from BeppoSAX and Rossi-XTE'

A nearly zero-energy microgrid testbed laboratory: Centralized control strategy based on SCADA system

Currently, despite the use of renewable energy sources (RESs), distribution networks are facing problems, such as complexity and low productivity. Emerging microgrids (MGs) with RESs based on supervisory control and data acquisition (SCADA) are an effective solution to control, manage, and finally deal with these challenges. The development and success of MGs is highly dependent on the use of power electronic interfaces. The use of these interfaces is directly related to the progress of SCADA systems and communication infrastructures. The use of SCADA systems for the control and operation of MGs and active distribution networks promotes productivity and efficiency. This paper presents a real MG case study called the LAMBDA MG testbed laboratory, which has been implemented in the electrical department of the Sapienza University of Rome with a centralized energy management system (CEMS). The real-time results of the SCADA system show that a CEMS can create proper energy balance in a LAMBDA MG testbed and, consequently, minimize the exchange power of the LAMBDA MG and main grid

Agrowisata Kampung Terih Sebagai Pengembangan Desa Pariwisata Di Batam

Penelitian ini dilatarbelakangi oleh perilaku wisatawan dan masyarakat lokal pada  agrowisata kampung terih sebagai pengembangan desa pariwisata di Batam. Studi ini bertujuan merumuskan model terbaik untuk mengembangkan wisata kampung terih di Batam. Model objek wisata yang diharapkan oleh pemeringkatan adalah motivasi yang kuat untuk mendorong wisatawan mengunjungi kampung terih adalah melatih fisik, mengunjungi tempat baru, memperkaya kecerdasan, istirahat dan menjauhkan diri dari stres. Pada aksesibilitas, para wisatawan menganggap bahwa jarak perjalanan kampung terih cukup jauh, dan sulit dijangkau dengan transportasi umum. Selain jarak yang cukup jauh, jalur yang harus dilalui ke kampung terih juga termasuk jalur sibuk. Hasil penelitian yang telah dilakukan menunjukkan bahwa kampung terih telah dikelola dengan baik yang terbukti dari keterlibatan masyarakat setempat (komunitas pariwisata), layanan panduan (link agen perjalanan). Transformasi ekonomi desa untuk mengunjungi kampung terih sangat kuat, pariwisata untuk mengunjungi kampung terih sedang, dan keberlanjutan kampung terih lemah.Penelitian ini dilatarbelakangi oleh perilaku wisatawan dan masyarakat lokal pada  agrowisata kampung terih sebagai pengembangan desa pariwisata di Batam. Studi ini bertujuan merumuskan model terbaik untuk mengembangkan wisata kampung terih di Batam. Model objek wisata yang diharapkan oleh pemeringkatan adalah motivasi yang kuat untuk mendorong wisatawan mengunjungi kampung terih adalah melatih fisik, mengunjungi tempat baru, memperkaya kecerdasan, istirahat dan menjauhkan diri dari stres. Pada aksesibilitas, para wisatawan menganggap bahwa jarak perjalanan kampung terih cukup jauh, dan sulit dijangkau dengan transportasi umum. Selain jarak yang cukup jauh, jalur yang harus dilalui ke kampung terih juga termasuk jalur sibuk. Hasil penelitian yang telah dilakukan menunjukkan bahwa kampung terih telah dikelola dengan baik yang terbukti dari keterlibatan masyarakat setempat (komunitas pariwisata), layanan panduan (link agen perjalanan). Transformasi ekonomi desa untuk mengunjungi kampung terih sangat kuat, pariwisata untuk mengunjungi kampung terih sedang, dan keberlanjutan kampung terih lemah

Unbounded Perturbations of the Generator Domain

Let X, U and Z be Banach spaces such that Z in X (with continuous and dense embedding), L : Z ->X be a closed linear operator and consider closed linear operators G, M : Z -> U. Putting conditions on G and M we show that the operator A = L with domain D(A) ={z∈Z: Gz=Mz} generates a C0- semigroup on X. Moreover, we give a variation of constants formula for the solution of an inhomogeneous problem. Several examples will be given, in particular heat equation with distributed unbounded delay at the boundary condition

Teardown analysis of a ten cell bipolar nickel-hydrogen battery

Design studies have identified bipolar nickel-hydrogen batteries as an attractive storage option for high power, high voltage applications. A pre-prototype Ni-H2 battery was designed, assembled and tested in the early phases of a concept verification program. The initial stack was built with available hardware and components from past programs. The stack performed well. After 2000 low-earth-orbit cycles the stack was dismantled in order to allow evaluation and analysis of the design and components. The results of the teardown analysis and recommended modifications are discussed

NASA Aerospace Flight Battery Program: Recommendations for Technical Requirements for Inclusion in Aerospace Battery Procurements

This NASA Aerospace Flight Battery Systems Working Group was chartered within the NASA Engineering and Safety Center (NESC). The Battery Working Group was tasked to complete tasks and to propose proactive work to address battery related, agency-wide issues on an annual basis. In its first year of operation, this proactive program addressed various aspects of the validation and verification of aerospace battery systems for NASA missions. Studies were performed, issues were discussed and in many cases, test programs were executed to generate recommendations and guidelines to reduce risk associated with various aspects of implementing battery technology in the aerospace industry. This document contains Part 2 - Volume I: Recommendations for Technical Requirements for Inclusion in Aerospace Battery Procurements of the program's operations

B cell autoimmunity and bone damage in rheumatoid arthritis

Rheumatoid arthritis (RA) is a chronic immune-inflammatory disease associated with significant bone damage. Pathological bone remodeling in RA is primarily driven by persistent inflammation. Indeed, pro-inflammatory cytokines stimulate the differentiation of bone-resorbing osteoclasts and, in parallel, suppress osteoblast function, resulting in net loss of bone. Abating disease activity thus remains the major goal of any treatment strategy in patients with RA. Autoantibody-positive patients, however, often show a rapidly progressive destructive course of the disease, disproportionate to the level of inflammation. The epidemiological association between RA-specific autoantibodies, in particular anti-citrullinated protein autoantibodies, and poor structural outcomes has recently found mechanistic explanation in the multiple roles that B cells play in bone remodeling. In this review, we will summarize the substantial progress that has been made in deciphering how B cells and autoantibodies negatively impact on bone in the course of RA, through both inflammation-dependent and independent mechanisms

Pancharatnam-Berry phase optical elements for wavefront shaping in the visible domain: switchable helical modes generation

We report the realization of a Pancharatnam-Berry phase optical element [Z. Bomzon, G. Biener, V. Kleiner, and E. Hasman, Opt. Lett. \textbf{27}, 1141 (2002)] for wavefront shaping working in the visible spectral domain, based on patterned liquid crystal technology. This device generates helical modes of visible light with the possibility of electro-optically switching between opposite helicities by controlling the handedness of the input circular polarization. By cascading this approach, fast switching among multiple wavefront helicities can be achieved, with potential applications to multi-state optical information encoding. The approach demonstrated here can be generalized to other polarization-controlled devices for wavefront shaping, such as switchable lenses, beam-splitters, and holographic elements

Histopathology of the synovial tissue : perspectives for biomarker development in chronic inflammatory arthritides

The histopathological and molecular analysis of the synovial tissue has contributed to fundamental advances in our comprehension of arthritis pathogenesis and of the mechanisms of action of currently available treatments. On the other hand, its exploitation in clinical practice for diagnostic or prognostic purposes as well as for the prediction of treatment response to specific disease-modifying anti-rheumatic drugs is still limited. In this review, we present an overview of recent advances in the field of synovial tissue research with specific reference to the methods for synovial tissue collection, approaches to synovial tissue analysis and current perspectives for the exploitation of synovial tissue-derived biomarkers in chronic inflammatory arthritides

Artificial intelligence-based conversational agents used for sustainable fashion: systematic literature review.

In the past five years, the textile industry has undergone significant transformations in response to evolving fashion trends and increased consumer garment turnover. To address the environmental impacts of fast fashion, the industry is embracing artificial intelligence (AI) and immersive technologies, particularly leveraging conversational agents as personalised guides for sustainable fashion practices. In this research paper, we conduct a systematic literature review to categorise techniques, platforms, and applications of conversational agents in promoting sustainability within the fashion industry. Additionally, the review aims to scrutinise the solutions offered, identify gaps in the existing literature, and provide insights into the effectiveness and limitations of these conversational agents. Utilising a predefined search strategy on IEEE Xplore, Google Scholar, SCOPUS, and Web of Science, 15 relevant articles were selected through a step-by-step procedure based on the guidelines of the PRISMA framework. The findings reveal a notable global interest in AI-powered conversational agents, with Italy emerging as a significant centre for research in this domain. The studies predominantly focus on consumer perceptions and intentions regarding the adoption of AI technologies, indicating a broader curiosity about how individuals incorporate such innovations into their daily lives. Moreover, a substantial proportion of the studies employs diverse methods, reflecting a comprehensive approach to understanding the functionality and performance of conversational agents in various contexts. While acknowledging the historical precedence of text-based agents, the review highlights a research gap related to embodied agents. The conclusion emphasises the need for continued exploration, particularly in understanding the broader impact of these technologies on creating sustainable and environmentally-friendly business models in the e-retail sector