This with the integration of distributed generation (DG) to meshed distribution systems, the operating time of the protective system becomes a major concern in order to avoid nuisance DG tripping. This paper proposes a new tripping characteristic for directional overcurrent relays (DOCRs) that can achieve a higher possible reduction of overall relays operating time in meshed distribution networ...

Ultrasoft x-rays are useful for testing the validity of mechanistic models of biological damage caused by radiation. Described here is the construction and operation of a cold-cathode transmission-target discharge tube for irradiating mammalian cells in vitro with aluminium characteristic x-rays (1.487 keV). Particular attention is given to the problems of sample preparation and dosimetry for t...

This work evaluates the fatigue behavior of ultrasonically welded aluminum AA5024) to fiber reinforced thermoplastic (PEEK) joints at a stress ratio R > 0. Initial load increase tests were carried out and, based on detected material reaction caused by damage, horizon for subsequent constant amplitude was derived. After identifying characteristic level, microscopic investigations hybrid fracture...

Many large-scale surveys measure subjective well-being (SWB) through a single survey item. This paper takes advantages of response time data to explore the relation between time taken to answer a single SWB item and the reliability and validity of answers to this SWB item. We found that reliability and validity of answers to the SWB item are low for fast respondents aged 70 and above and slow r...

Type C oncornavirus isolation was attempted from cell cultures of tissues from 7 patients with systemic lupus erythematosus. Detection was based on the characteristic sedimentation of 3H-uridine-labelled virions at a density of 1-16 g/ml. Cultures positive by this method were negative by two other criteria for type C viruses: characteristic virions by electron microscopy and the viral enzyme RN...

The cell has an intricate quality control system to protect its mitochondria from oxidative stress. This surveillance system is multi-tiered and comprises molecules that are present inside the mitochondria, in the cytosol, and in other organelles like the nucleus and endoplasmic reticulum. These molecules cross talk with each other and protect the mitochondria from oxidative stress. Oxidative s...

The synovium is a specialized tissue lining the synovial joints, bursae, and tendon sheaths of the body. It is affected by various localized or systemic disorders. Synovial diseases can be classified as inflammatory, infectious, degenerative, traumatic, hemorrhagic, and neoplastic. Damage in other intraarticular structures, particularly cartilages, generally occurs as a part of pathologic proce...

The Near-Death Experience (NDE) is a dissociative mental state with characteristic features. These can be reproduced by ketamine which acts at sigma sites and blocks N-methyl-D-aspartate (NMDA) linked phencyclidine (PCP) receptors to reduce ischaemic damage. Endogenous ligands, alpha and beta-endopsychosin, have been detected for these receptors which suggests an explanation for some NDE's: the...

Thumbnail Language disturbances observed in cases of damage outside of the “brain language area” are known as extrasylvian or transcortical aphasia. Preserved language repetition is its distinguishing characteristic. Two major subtypes of extrasylvian aphasia have been traditionally distinguished: extrasylvian motor aphasia and extrasylvian sensory aphasia, each one presenting rather different ...