Results 1 to 10 of about 360 (115)

Satisfaction among patients seeking services at an urban health training center during the COVID-19 pandemic in South Delhi, India [PDF]

open access: yesJournal of Family Medicine and Primary Care, 2023
Background: The COVID-19 pandemic has posed challenges to the provision of routine health services. As we continue providing non-COVID services, it is essential that the community perceives them to be satisfactory and safe to ensure optimum uptake.
Aritrik Das   +8 more
doaj   +2 more sources

Twin Toughening‐Driven Martensitic Transformation Strategy Synergistic Improvement for Plasticity‐Thermal Shock Resistance of (Hf─Zr─Ti)C Ceramic Coating in Severe Thermal Environments [PDF]

open access: yesAdvanced Science
The inherent brittleness and insufficient thermal shock resistance of ultra‐high temperature ceramic (UHTC) in severe thermal environments (above 2000 °C) remain significant challenges.
Jiachen Li   +10 more
doaj   +2 more sources

UHTC ceramics derived from B4C and MAX phases by reactive sintering [PDF]

open access: yesScientific Reports
In this work, the influence of three MAX phases (Ti3SiC2, Ti2AlC, and Cr2AlC) on the densification and final properties of dense composites from Ultra-High Temperature Ceramics (UHTC) family was studied.
Dawid Kozień   +8 more
doaj   +2 more sources

Assessment of Vitamin D Deficiency and its Effect on Maternal and Fetal Outcome among Antenatal Females Registered in Urban Health and Training Centre Ratlam

open access: yesJournal of Pharmacy and Bioallied Sciences
Background: Vitamin D is a fat-soluble vitamin involved in the regulation of calcium homeostasis and thus is essential for a healthy skeletal system.
Nishi Mishra   +4 more
doaj   +2 more sources

Broadband electromagnetic absorption up to 1473 K enabled by dielectric frequency-dispersion engineering in ceramic composites [PDF]

open access: yesNature Communications
Rising vehicle Mach numbers urgently necessitate broadband electromagnetic wave (EMW) absorbers capable of operating at even higher temperatures while maintaining environmental durability.
Bin Ren   +11 more
doaj   +2 more sources

Effect of Y3Al5O12 addition on the microstructural evaluation and mechanical properties of spark plasma sintered ZrB2-SiC composites [PDF]

open access: yesScience of Sintering, 2022
In the present study, the addition of Y3Al5O12 (YAG) into the ZrB2-SiC composites was investigated. Composites were densified by spark plasma sintering (SPS) at 1850ºC under a uniaxial pressure of 50 MPa for 20 min.
Gürcan Kübra   +3 more
doaj   +1 more source

Insight into microstructure and flexural strength of ultra-high temperature ceramics enriched SICARBON™ composite

open access: yesMaterials & Design, 2021
Research efforts on Ceramic Matrix Composites (CMCs) are aimed to increase the operating temperature in oxidizing environments by adding Ultra-High Temperature Ceramic (UHTC) phases to the matrix.
Pietro Galizia   +2 more
doaj   +1 more source

Microstructure and evolution of hafnium carbide whiskers via polymer-derived ceramics: A novel formation mechanism

open access: yesJournal of Advanced Ceramics, 2023
Polymer-derived ultra-high-temperature ceramic (UHTC) nanocomposites have attracted growing attention due to the increasing demands for advanced thermal structure components in aerospace. Herein, hafnium carbide (HfC) whiskers are successfully fabricated
Yanqin Fu   +7 more
doaj   +1 more source

Advances in ultra-high temperature ceramics, composites, and coatings

open access: yesJournal of Advanced Ceramics, 2021
Ultra-high temperature ceramics (UHTCs) are generally referred to the carbides, nitrides, and borides of the transition metals, with the Group IVB compounds (Zr & Hf) and TaC as the main focus.
Dewei Ni   +12 more
doaj   +1 more source

A Ten-year Risk Assessment Study of Cardiovascular Events Among Adults Visiting a Tertiary Care Institution in Northern India [PDF]

open access: yesNational Journal of Laboratory Medicine, 2022
Introduction: Cardiovascular diseases (CVDs) are a group of disorders of the heart and blood vessels, including Myocardial Infarction (MI) and stroke. Risk factors included are both modifiable and non modifiable, like age, sex, blood pressure, smoking
Md Naushad Alam   +2 more
doaj   +1 more source

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