introduction: over the past two decades, the incidence of cesarean section in most countries has increased.developmental delay occurs when children do not reach their developmental milestones at the expected time. the main causes of developmental delay are often unknown. investigation of the prevalence of developmental delay and its effective factors in children from 4 to 12 months old in pakda...

original article   thermal stress is a well-recognized health hazard in the workplace. in addition to the health deficits, working in the heat can affect significantly on the productivity of some industries located in rough environments. the current indices used to evaluate the environment are either flawed or difficult to implement. the focus of this review is upon heat stress indices used in ...

trends in cholesterol level of different populations have been investigated in several studies. this study is conducted to determine the trend of cholesterol level of iranian adults from 1990 to 2007. data on cholesterol measurements of four national health surveys that have been carried out in iran used in this study. cholesterol level of 12728 adults aged 25-64 were measured in 1990-1 survey....

Contributors to this symposium have outlined the present status of our scientific knowledge of what is one of the most fascinating regions on this globe, the Subantarctic Islands of New Zealand. No completely satisfactory definition of this region exists. It may be defined as those islands which lie within the Subantarctic zone of surface waters, bounded to the north by the Subtropical Converge...

Integration of optics with genetics to control any events within particular cells of living tissue is known as optogenetics. Term ‘Optogenetics’ was introduced in early 1970’s. It is the marriage between optics and genetics to control specific cells of living tissue. This paper introduces the field of optogenetics and its emergence from biophotonics and summarizes the role of optics in the fiel...

Introduction There are many issues impacting the history of media collections in academic libraries. Facets of this history are intertwined with the profession of media librarianship and the fields adjacent to it such as instructional technology and audiovisual production. Additionally, popular culture and the demand from library users impact our collection development decisions. Topics such as...

In searching for methods to distinguish knots and links, recent work has focussed on the more general virtual knots and links, introduced by Kauffman in [2]. If we ignore the over/under information at each crossing, we obtain a flat virtual knot or link (still called a knot or a link), sometimes called the universe of the original virtual knot or link. It is a triviality that if the original vi...

Here H(X) measures the average uncertainty associated with the random variable X. If X is the lifetime of a system and if the system has survived up to time t, then to measure the uncertainty about the remaining lifetime of such a system the measure (1) is not appropriate. Ebrahimi (1996) proposed a measure which measures the uncertainty about the remaining lifetime of a system if it is working...

Past years have seen a plethora of studies on the construct of trust in business relationships. Despite the significance of trust in developing relationships, research on trust still has two main deficiencies. First, previous studies attempted to stretch the concept of trust from interpersonal towards interorganizational relationships which resulted in a cross-level fallacy, as the emotional ch...