High temperature microwave absorption material is significantly important to improve the viability of NITRO TECH advanced weapon and equipment.This paper summarizes the research progress of high temperature microwave absorption materials.The current research status of SiC based oxygen-free ceramic materials, laminated ternary ceramics (MAX phases),
Response of the Nigerian construction sector to economic shocks
The construction sector (CS) is an economic barometer that mirrors the state of the economy.Therefore, the construction sector is susceptible to economic impacts.This study investigated the impact of economic shocks (measured with the Gross Domestic Product (GDP)) on construction sector performance.The study used econometric methodology which invol
Histomorphological spectrum and immunohistochemical characterization of hemangioblastomas: An entity of unclear histogenesis
Introduction: Hemangioblastomas (HBs) are rare WHO grade I neoplasms of uncertain histogenesis.Most are sporadic and association with von Hippel-Lindau disease (VHL) is uncommon.Materials and Methods: Histomorphological and immunohistochemical evaluation of 24 cases of HBs was done.Results: Age range was 15-68 yrs (median: 30 yrs) with male:Female
Continuous monitoring of an intentionally-manufactured crack using an automated welding and in-process inspection system
Automated weld deposition coupled with the real-time robotic Non-Destructive Evaluation (NDE) is used in this paper.For performance verification of the in-process inspection system, an intentionally embedded defect, a tungsten rod, is introduced into the multi-pass weld.A partially-filled groove (staircase) sample is also manufactured and ultrasoni