BACKGROUND AND AIM: The purpose of this study was to evaluate the sensitometric characteristics of Ultraspeed, Ektaspeed Plus and Insight dental radiographic films using manual and automatic processing systems. METHODS: In this experimental invitro study, an aluminum step-wedge was used to construct characteristic curves for D-, Eand F-speed radiographic films (Kodak Eastman, Rochester, USA). A...

CO(2) conversion will be at the core of the future of low-carbon chemical and energy industry. This review gives a glimpse into the possibilities in this field by discussing (i) CO(2) circular economy and its impact on the chemical and energy value chain, (ii) the role of CO(2) in a future scenario of chemical industry, (iii) new routes for CO(2) utilization, including emerging biotechnology ro...

Most of the carbon-based compounds currently manufactured by the chemical industry are derived from petroleum. The rising cost and dwindling supply of oil have been focusing attention on possible routes to making chemicals, fuels, and solvents from biomass instead. In this context, many recent studies have assessed the relative merits of applying different dedicated crops to chemical production...

Hazardous chemical is the chemical product in chemical industry. Hazardous chemicals are often toxic. Some hazardous chemicals are corrosive, or easily lead to explosion. In the process of production, storage and transportation, hazardous chemicals can easily lead to leakage or explosion accidents. These result in a large number of casualties and damage to the surrounding environment. Logistics...

How I entered the field i graduated from the university of california, Berkeley with a major in chemistry in 1950. my preferred career would have been novelist, but i dismissed that as impractical. my parents, who had majored in english and Journalism, respectively, advised me to major in Science, because they thought that most of what they had learned at the university i would be able to learn...

Surveys show that the public suspects that synthetic (manmade) chemicals released into the environment, especially pesticides, have adverse effects on human health and cause disease, including cancer. In reality, few scientifically documented examples support this view, especially for effects on the general population. However, the observation that many synthetic chemicals have intrinsic hormon...

This paper analyzes the modeling process by means of a eld study in the chemical industries. A diversi ed set of experienced modelers from two di erent countries have been interviewed using a case study approach. The interviews focussed on the modeling process. Other issues like life-cycle perspectives and the use of modeling in the process industries were treated as well. The information has b...

Researchers say that endocrine-disrupting chemicals can permanently damage the developing organism and may even promote obesity. But the chemical industry doesn't want you to believe them.