This study reports the simulation of a photocatalytic system process and the photocatalytic property of self-cleaning asphalt concrete (SCAC) with four typical asphalt mixtures. A photocatalytic system was simulated based on the pollutant concentration data, which were collected on three types of city roads. Two photocatalytic indexes were proposed to evaluate the photocatalytic property of sel...

To optimize the capacity and positioning of the cleaning vessels, Genetic Algorithm is used for ports and coastal areas in the Persian Gulf due to economical and environmental damages. Local wind is recognized as the principal driving force to simulate the trajectory of oil spill events. In this regard, the wind field is determined by Weibull probability distribution to adjust the prevailing wi...

This study investigated the sporulation behaviour of Alicyclobacillus acidoterrestris DSM 2498 under different culture condition, its cellular surface hydrophobicity. The effects of sanitizers used in cleaning-in-place (CIP) on the survival of this bacterium was also evaluated using a stainless steel 304 model system with total capacity of 25 litters. The higher hydrophobicity value was related...

It is highly difficult to perform safe surgery without sterile instruments, yet the capacity to adequately clean, disinfect and sterilise surgical instruments in low-income and middle-income countries is largely unknown. Sterile Processing Education Charitable Trust developed an assessment tool and, in partnership with Mercy Ships, evaluated the sterile processing capacity in 59 facilities in M...

The cleanliness of feeding bottles is vital for child health (1, 2). Because of versatile, light, sturdy, reusable, and cost-efficient, plastic bottles, rather than conventional glass bottles are increasingly being utilized in the reusable feeding bottles. Although the machine cleaning of bottles in the food industry has been established (3, 4), the results may not pertain to the cleaning condu...

OBJECTIVES The aim of this study was to compare the cleaning efficacy and instrumentation time between manual Hedstrom files (H-files) and rotary Mtwo files in primary molar root canals. MATERIALS AND METHODS A total of 90 primary root canals were selected using standardized radiographs. The canals were injected with India ink with 30 gauge insulin syringe and divided into three groups. Group...

The process cleaning rate theorem holds that the static rate (chemical forces) plus the dynamic cleaning rate (mechanical forces) equals the process cleaning rate. New lead-free flux residues result from more demanding soldering drivers created by high soldering temperature, surface tension effects, and miniaturization. Lead-Free flux compositions require thermal stability, resistance against b...

The device consists of an oro-ruminal probe (Table 1, Fig. 1), a suction pump (Fig. 2), and a funnel. The probe can be connected to the pump (collection of ruminal fluid) (Fig. 3), to the funnel (administration of liquids or transfer of ruminal fluid) (Fig. 4) or to a water tap (cleaning) (Fig. 5) by means of a quick coupling connection. The pump consists of a pumping unit and a fluid container...