1,721,367 research outputs found
Impact of phase change material-based thermal management on battery thermal safety
No full textThe increasing demand for electric vehicles (EVs) has intensified research on lithium-ion battery safety, particularly regarding thermal runaway (TR) and thermal management systems (TMS). This review battery safety, explores the mechanisms of TR, including mechanical, electrical, and thermal abuse, and highlights strategies for mitigating TR through effective battery thermal management (BTM). Phase change materials (PCMs) have emerged as promising passive thermal solutions due to their latent heat storage capabilities; however, their low thermal conductivity and leakage issues present significant challenges. Recent advancements in composite PCMs, incorporating nanomaterials such as expanded graphite, boron nitride, and metal oxides,
have significantly improved heat dissipation and stability. Additionally, active cooling methods, including air, liquid, and thermoelectric systems, are evaluated in hybrid approaches that enhance battery safety and performance. Integrating flame-retardant additives and encapsulated PCMs further improves thermal stability and fire resistance. Artificial intelligence (AI) driven material development strategies are also proposed to optimize PCM formulations and real-time BTM assistance. This review provides a comprehensive analysis of current BTM techniques and future research directions, emphasizing the role of nanotechnology and hybrid cooling methods in enhancing EVs' battery performance, safety, and longevity
EXPERIMENTAL INVESTIGATION OF EPCM AND BORON NITRIDE ADDITIVES FOR SAFETY ENHANCEMENT IN LITHIUM-ION BATTERIES
No full textDetermination of Essential Mineral Concentrations in Some Turkish Teas and the Effect of Lemon Addition
No full textEssential elemental concentrations of Turkish black, green, and earl grey tea infusions were determined with and without added lemon. Daily percentage elemental intake values from these 3 teas with and without lemon addition were calculated based on Recommended Dietary Allowances (RDA). Calcium (Ca), cobalt (Co), copper (Cu), iron (Fe), potassium (K), magnesium (Mg), sodium (Na), selenium (Se), and zinc (Zn) concentrations were increased after lemon addition. The chromium (Cr) concentration was decreased in green and earl grey teas and increased in black tea after lemon addition. The manganese (Mn) concentration was increased in green tea and decreased in black and earl grey teas after lemon addition. The phosphorus (P) concentration was increased in earl grey and green teas, and decreased in black tea after lemon addition. The daily intake value of Mn was found above the RDA value
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Modelling and optimization of gold mine tailings based geopolymer by using response surface method and its application in Pb2+ removal
No full textUsage of gold mine tailings based geopolymer on Cu2+ adsorption from water
No full textIn todays world, heavy metal pollution is one of the major problems. Various methods have been developed for the removal of pollution caused by heavy metals. However, adsorption is the most advantageous process among these methods
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