OBJECTIVES A hospital-based case-referent study was carried out in Lyon with the purpose of generating hypotheses about the role of occupational exposures to 320 compounds in bladder carcinogenesis. METHODS Job histories were obtained by questionnaire for 116 cases and 232 reference patients with diseases other than cancer (one referent from the same hospital ward and one from another ward of...

Distilled tall oil (DTO) is a natural product, often added as an emulsifying ingredient in cutting fluids used as lubricants and coolants in metal working. The in vitro model used to test the skin compatibility of these substances, was the isolated perfused ex vivo bovine udder skin (BUS) model. After three exposure periods (0.5, 1, and 5 hours), cytotoxic effects were determined by using the 3...

Cutting fluids are often used in the machining of titanium alloys to reduce processing temperature and maximize quality productivity. The permeability cutting fluid capillary tube directly influences effect lubrication on cooling performance. In this study, supercritical carbon dioxide cryogenic micro-lubrication (scCO2-MQL) is for auxiliary alloys. A model scCO2-MQL-assisted proposed establish...

Machining process in Manufacturing system is the removal of material to produce a desired shape, size and, or weight particular part. This involves use cutting, grinding and boring tools as case maybe, itself not free from challenges that includes reduction tool life which are usually affected also effect friction affects machine parts. Therefore, an engineering practice manufacturing required ...

This paper discusses cake-cutting protocols when the cake is a heterogeneous good, represented by an interval on the real line. We propose a new desirable property, the meta-envy-freeness of cake-cutting, which has not been formally considered before. Meta-envy-free means there is no envy on role assignments, that is, no party wants to exchange his/her role in the protocol with the one of any o...

This paper discusses cake-cutting protocols when the cake is a heterogeneous good that is represented by an interval in the real line. We propose a new desirable property, the meta-envy-freeness of cake-cutting, which has not been formally considered before. Though envy-freeness was considered to be one of the most important desirable properties, envy-freeness does not prevent envy about role a...

Boiling water in small channels that are formed along turbine blades has been examined since the 1970s as a means to dissipating large amounts of heat. Later, similar geometries could be found in cooling systems for computers, fusion reactors, rocket nozzles, avionics, hybrid vehicle power electronics, and space systems. This paper addresses (a) the implementation of two-phase microchannel heat...

The cuttings transport efficiency of various drilling fluids has been studied in several approaches. This is an important aspect, since hole cleaning often a bottleneck well construction. studies so far have targeted the fluid cuttings’ capability through experiments, simulations or field data. Observed differences due to changes properties and compositions reported but not always fully underst...

Developing high-efficiency lubricant additives and high-performance green cutting fluids has universal significance for maximizing processing efficiency, lowering manufacturing cost, more importantly reducing environmental concerns caused by the use of conventional mineral oil-based fluids. In this study, a nanocomposite is synthesized filling sulfurized isobutylene (T321) into acid-treated car...