The neurochemical basis of memory has been approached experimentally in four different ways: the bioassay; the interventive approach; the interventive-correlative approach; and the correlative approach. These approaches are fundamentally similar to those used for the study of the chemistry of any behavior. Each of these approaches has serious limitations, and significant progress has only been ...

background and purpose: providing health services in health centers is a challenging and risky job. so that, realization of quality, performance, efficiency, and fairness in the provision of such services needs a proper condition to ensure that the stress experienced by the personnel is minimized. the present study is a survey of the factors effective on job stress among the nurses working in t...

Nuclear medicine, ultrasound, and magnetic resonance imaging (MRI) are considered ideal imaging modalities for pediatric patients. The future is even more promising for pediatric imaging with the development of newer and improved radiopharmaceuticals, instrumentation and diagnostic modalities such as positron emission tomography, labeled monoclonal antibodies, and faster dynamic and contrast en...

BACKGROUND Occupational health care for all is a global aim but has not yet been achieved. Further development should be based on knowledge of specific alternative models of occupational health services (OHS). Little is published on different OHS models and work as a physician in these services. AIMS To describe duties for Norwegian physicians working in two different OHS models: internal and...

We report retinal structural changes of a 37-year-old man diagnosed with the concomitant occlusion of cilioretinal artery and central retinal vein. Comprehensive ophthalmological evaluation was performed, followed by spectral-domain optical coherence tomography (SD-OCT, Heidelberg), optical coherence tomography angiography (OCT angiography, Optovue Inc., Fremont, California, USA), fluorescein a...