W study sourcing in a supply chain with three levels: a manufacturer, tier 1 suppliers, and tier 2 suppliers prone to disruption from, e.g., natural disasters such as earthquakes or floods. The manufacturer may not directly dictate which tier 2 suppliers are used but may influence the sourcing decisions of tier 1 suppliers via contract parameters. The manufacturer’s optimal strategy depends cri...

Features of the tubular type heat exchanger were examined experimentally in current study. A rig is fitted with a novel insert as negative transfer increase technique. The core fluid used air under steady flux and turbulent discharge state (6000 ≤ Re 19,500) conditions. Two augmentation inserts are employed; one basket turbulators utilized turbulator placed inside constant pitch ratio (PR = 150...

Two types of micron-diamond films were prepared on YG6 substrate by hot filament chemical vapor deposition(HFCVD) method. Morphology and orientation of crystalline growth were evaluated by SEM and XRD. Diamond film coated tools and sapphire wafer’ surface before and after lapping experiment  were contrasted. The results indicated that a significant change in Raman spectrum of two types of micro...

Currently, thermally excited magnons are being intensively investigated, owing to their potential in computing devices and thermoelectric conversion technologies. We report the detection of a thermal magnon current propagating magnetic insulator yttrium iron garnet under temperature gradient using quantum sensor: electron spins associated with nitrogen-vacancy (N-V) centers diamond. A is observ...

In this work, the structure formation of powder diamond-containing coatings with Sn-Cu-Co binders during sintering specially-shaped grinding wheels has been studied. The kinetics was studied using diamond-free metallic and samples. Powder components were mixed an organic plasticizer applied on steel workpieces by rolling. Sintering performed in vacuum at 700–820 °C. microstructure, phase compos...