high intensity optical radiation can cause damage to the eye and intense radiation in the range of 770-1400 nm can cause thermal retinal damage. in the workplaces where there are high temperature sources, the workers in front of these hot  sources without bright light maybe exposed to the  intense ir radiation, thus regular measurement of these radiations seems crucial. measurement of ir radiat...

BACKGROUND Exposure to polycyclic aromatic hydrocarbons (PAHs) has been reported in several industries, including those of the aluminum production, coal gasification, coke production, iron and steel foundries, coal tar and related products, carbon black and carbon electrodes production. PATIENTS AND METHODS This paper reviews the results from cohort studies conducted on workers exposed to PAH...

backgrounds and aims: aluminum and in particular its compounds make up a large proportion of the pollutants coming from the aluminum foundry. in several studies conducted on the harmful effects of aluminum in recent decades, it has been identified as a neurotoxic metal. chronic occupational exposure through inhalation of dust is a common problem in aluminum foundries. investigation of the expos...

Aluminum is one of the most versatile engineering metals, finding its use in a variety fields including construction, architecture, aerospace, automotive, consumer products, and many more. The high demand for aluminum production driven by advantageous physical, chemical, mechanical properties, such as strength to weight ratio good corrosion resistance. Additionally, can be recycled using proces...

The results of the analysis various methods refining aluminum alloys from dissolved gases and non-metallic inclusions are presented. influence a number technological features each method on quality melt has been studied. Examples equipment for implementation processes To analyze effectiveness use technologies alloys, their ranking was carried out. in correlation with trends spread foundries. It...

In this paper we present a comprehensive report on the issues found during manufacturing of high-yield CMOS-MEMS sensors based vapor-phase hydrogen fluoride (vapor- HF) oxide etching. During study have identified main affecting regarding silicon as sacrificial material, passivation release mask, BEOL structural material for MEMS design and aluminum-sputtering sealing layer cavity. This has been...

There is a trend in the automotive producers to require that foundries use more secondary aluminum alloy ingots reduce CO2 footprint of car production. The merits this have been investigated study. Results shown requiring while simultaneously reducing elongation requirement die castings counterproductive, i.e., increases over its useful life by not taking advantage weight reduction possible. It...

The calcined petroleum cokes are used in production of aluminum anode-grade, graphite electrode, needle-grade, titanium dioxide pigments. Petroleum coke (green and calcined) is produced by the high pressure thermal decomposition of heavy petroleum process streams and residues. Green coke undergoes additional thermal processing to produce calcined coke. Various properties of calcined cokes from ...