ABSTRACT
This article is an historical overview of the Hanau Engineering Company from the time of Rudolph Hanau's death in 1930 to the present. It explores the development of many articulators intended both for removable and fixed prosthodontic restorations. The article is divided into the eras of the company's corporate history, and it reviews articulator designs and major improvements made during each of those periods.
Subject(s)
Dental Articulators/history , Equipment Design/history , History, 20th Century , History, 21st Century , South Africa , United StatesABSTRACT
The major focus of this review is to establish concussion in sport as a silent epidemic in our society that is not an accident. Brain injury has a definitive pattern and distinct nonrandom predictable characteristic. The development of successful head protection requires a scientific database approach to the mechanics of headgear. It is the responsibility of the health care clinician to help with the maintenance of protective standards for headgear and support rule changes to decrease the morbidity and mortality of athletes.
Subject(s)
Athletic Injuries/prevention & control , Brain Concussion/prevention & control , Equipment Design/history , Head Protective Devices/history , Sports Equipment/history , Athletic Injuries/etiology , Biomechanical Phenomena , Brain Concussion/etiology , Equipment Design/trends , Head Protective Devices/standards , Head Protective Devices/trends , History, 20th Century , History, 21st Century , Humans , Sports Equipment/standards , Technology/historyABSTRACT
OBJECTIVE: This study sought to recognize the active and symbolic role played by the objects from the material world for nursing care in Spain between 1855 and 1955. METHODOLOGY: This was a historical study using procedures from founded theory. The information sources were eight handbooks for the formation of healthcare professionals published in Spain, during the period of interest. The information was gathered from March 2012 to June 2013. During this period, the sources were revised comprehensively and bibliographic information, description of instruments, and analysis files were made; methodological and analytic memoranda were written. Forty-five procedures and 360 material objects were registered. RESULTS: The categories ''principal and secondary objects'' and ''guarded objects'' reveal the influence exerted by the objects from the material world for care. CONCLUSION: In Spain, between 1855 and 1955, nursing care was carried out within a scenario comprised of objects with secondary status and situated within the periphery of care, as well as by guarded objects that professionals could not use. This material world influenced the social recognition of healthcare professionals at the time and the visibility of their work.
Subject(s)
Equipment Design/history , History of Nursing , Nursing Care/methods , History, 19th Century , History, 20th Century , Humans , Spain , SymbolismABSTRACT
Este artículo describe un microscopio que proyectaba preparados de histología sobre una pantalla, utilizando una fuente luminosa de gran intensidad por el arco voltaico.
Subject(s)
History, 18th Century , History, 19th Century , Equipment Design/history , Students, Dental/history , History of Dentistry , Microscopy/history , Diagnostic Equipment/history , Schools, Dental/history , Histological Techniques , Video-Audio Media/historyABSTRACT
Each of the authors played a significant role in the design and development of one or more of the Medrad/Intec/Cardiac Pacemakers Inc defibrillators. In so doing, each has contributed to the realization of Dr Mirowski's dream. That tens of thousands of patients have now benefitted from his leadership and that many AICDs will soon be competing in the marketplace is testimony to his truly remarkable vision and persistence.