i n addition to labor force and capital, energy plays a significant role in the production of commodities and services. energy is the driving force of production activities. therefore, it is an essential ingredient of growth and development. results obtained from this paper show that the growth of oil products consumption has a positive effect on economic development via two channels: firstly, ...

background and objectives: despite the increasing impact of heavy metal pollution in persian gulf due to urban growth and agricultural and petroleum activities, few studies have focused on the behavior and relationships of these pollutants in the biotic and abiotic components of aquatic environments. in this study, the amount of some metals (copper, iron, lead, cadmium, zinc and nickel) was det...

Forty-six percent of U.S. imports occur between related parties. This aggregate statistic, however, obscures considerable variation in intrarm intensity across import partners as well as products. Indeed, while 74 percent of U.S. imports from Japan are intrarm, the gure for Bangladesh is just 2 percent. Likewise, trade between related parties accounted for 2 percent of U.S. imports of rubber an...

Dental offices have been switching to online purchasing of their dental supplies and equipment. This case presents the marketing strategy for a newly created online store for a dental supply company. The online store provides dentists with over 16,000 different dental products from alloys to dental instruments to x-ray products. Online sales are a more efficient approach to the traditional cata...

A questionnaire was circulated to clinical biochemistry laboratories in the North West Thames region of the United Kingdom requesting information on extralaboratory equipment. Data on the types and numbers of instruments in use, their relationship with the laboratory, and quality assurance procedures were obtained. Laboratories were prepared to maintain equipment over which they had no responsi...

Virtually every piece of electronic equipment, e.g., computers and their peripherals, calculators, TV and hi-fi equipment, and instruments, is powered from a DC power source, be it a battery or a DC power supply. Most of this equipment requires not only DC voltage but voltage that is also well filtered and regulated. Since power supplies are so widely used in electronic equipment, these devices...

Virtually every piece of electronic equipment, e.g., computers and their peripherals, calculators, TV and hi-fi equipment, and instruments, is powered from a DC power source, be it a battery or a DC power supply. Most of this equipment requires not only DC voltage but voltage that is also well filtered and regulated. Since power supplies are so widely used in electronic equipment, these devices...

Virtually every piece of electronic equipment, e.g., computers and their peripherals, calculators, TV and hi-fi equipment, and instruments, is powered from a DC power source, be it a battery or a DC power supply. Most of this equipment requires not only DC voltage but voltage that is also well filtered and regulated. Since power supplies are so widely used in electronic equipment, these devices...

BACKGROUND Orthopaedists make great use of eponymous equipment, however the origins of these tools are unknown to many users. This history enriches, enlightens, and enhances surgical education, and may inspire modern innovation. QUESTIONS/PURPOSES We explored the origins of common and eponymous orthopaedic equipment. METHODS We selected pieces of equipment named for their inventors and in t...

in this study, we synthesis one-dimensional (1d) manganese(iii) schiff base coordination polymer [mn(brsalophen)(μ1,3-n3)]n by reaction of mncl2·6h2o and tetradentate schiff base ligand brsalophen at the presence of nan3 in methanol and characterized by elemental analyses (chn) and ft-ir spectroscopy. it was used as a new precursor to prepare spinel type manganese oxide nanowires by a facile so...