The qualitative parameters of tillage with tools disk working bodies are influenced by a variety structural, technological and operational factors. One these is the uniformity depth tillage, influencing factors include relief field, speed movement, method fastening others. article presents an overview ways attaching individual to frame their effect on depth. It proposed use combined statistical...

Water-soluble metal working fluids are used for processing of aluminum alloy materials. This short article describes properties of new additives in water-soluble metal working fluids for aluminum alloy materials. Many half esters or diesters were prepared from the reactions of higher alcohols with acid anhydrides. Interestingly, diesters of PTMG (tetrahydrofuran oligomer, MW = 650 and 1000) and...

Metal-working fluids (MWFs) are used in machining and grinding operations to cool the tool and work, reduce the friction between the tool and work, improve the surface integrity of the work piece, and increase tool life and productivity. Health problems have been reported among workers exposed to MWFs, including incidences of respiratory, digestive and skin cancers, and increased rates of cough...

Fig.5. Examples of T2W anatomical images and corresponding MWF maps from an RRMS patient (arrows indicate lesions). Fig.4. Examples of spiral T2W source images and MWF maps obtained with COMP T2prep showing severe artifacts (arrows). BIR-4 T2prep provides artifact free source images and MWF maps with exquisite details in the cortical areas. Robust adiabatic T2 preparation for fast whole brain s...

The relationships between impairment, function, arm use and underlying brain structure following stroke remain unclear. Although diffusion weighted imaging is useful in broadly assessing white matter structure, it has limited utility in identifying specific underlying neurobiological components, such as myelin. The purpose of the present study was to explore relationships between myelination an...

Occupational exposure to aerosolized particles of oil-based metalworking fluid was recently linked to deaths from ischemic heart disease. The current recommended exposure limits might be insufficient. Studying cardiovascular mortality is challenging because symptoms can induce sicker workers to reduce their exposure, causing healthy-worker survivor bias. G-estimation of accelerated failure time...

In this study, the silicon dioxide was deposited on the silicon substrate by metal-organic based plasma enhanced chemical vapor deposition (PECVD) method at the low temperature. The metal-organic tetraethoxy-silane (TEOS) was used as a silicon precursor in liquid state. In addition, oxygen and argon were used as ambient gases. Effects of the working pressure and O2/TEOS pressure ratio on the ch...