There are many events in the lives of insects where rapid, effective stress reactions are needed, including fighting conspecifics to defend territories, evading predators, and responding to wounds. A key element of the stress reaction is elevation of heartrate (HR), for enhancing distribution of blood (hemolymph) to body compartments. We conducted two experiments designed to improve understandi...

OBJECTIVE This study determined the severity of posttraumatic stress and depressive reactions among Nicaraguan adolescents after Hurricane Mitch and the relationship of these reactions to objective and subjective features of hurricane exposure, death of a family member, forced relocation, and thoughts of revenge. METHOD Six months after the hurricane, 158 adolescents from three differentially...

drought and salinity stress are adverse environmental factors that affect crop growth and yield. abiotic stress cause some reaction in plants such as change in gene expression, cell metabolism, growth and yield. moreover, stress condition resulted in increase of reactive oxygen species and disturbe macromolecules such as proteins, fatty acids, nucleic acid and pigments. in order to evaluate sal...

background: stress is a cause of male infertility. although sex hormones and sperm quality have been shown to be low in stress, sperm physiology and testicular functional proteins, such as phosphotyrosine proteins, have not been documented. objective: to investigate the acrosome status and alterations of testicular proteins involved in spermatogenesis and testosterone synthesis in chronic stres...

OBJECTIVES This study was conducted to investigate the effect of trust on work stress. Trust can be classified into three dimensions; social trust, institutional trust, and trust in others. The relationship between work stress and trust is regarded as having three components. First, trust has an influence on work stressors as an antecedent variable; secondly, trust modifies the effect of the va...

BACKGROUND Diagnosis and treatment of stress fractures still remains to be a clinical and radiological challenge. Therapeutic options vary from conservative treatment to surgical treatment without a clear treatment concept. Recently the combination of PET and MRI has been introduced, aiming a superior diagnostic accuracy in clinical practice. Therefore the aim of our study was to analyse whethe...

The stress-strain behaviour of two Ni-Ti and two Copper Ni-Ti orthodontic wires was examined in induced torsion under controlled conditions of moment and temperature. The tests clearly demonstrate the diversity of behaviour of these wires. The loading and unloading curves and plateau regions were found to be closely related to temperature with stiffness varying dramatically over mouth temperatu...

The prevalence of asthma has increased worldwide. The reasons for this rise remain unclear. Oxidative stress plays an important role in the pathogenesis of asthma. Glutathione (GSH) is the major representative of the class of nonprotein thiols and plays a pivotal role in a variety of enzymatic and nonenzymatic reactions that protect tissues against oxidative stress. In antioxidative reactions, ...