In this paper we present a simple and rapid method of modifying poly(dimethylsiloxane) (PDMS) surfaces with paraffin wax. PDMS that contains a layer of paraffin wax at its surface resists the absorption of hydrophobic molecules; we used fluorescence microscopy to confirm that paraffin-modified PDMS resists the absorption of rhodamine B. Furthermore, we demonstrated that microfluidic devices mad...

the potential indoor air impacts of burning candles have drawn increased attention in recent years.  burning paraffin waxes itself, regardless to wick and the essence, produce some allergens and even carcinogenic compounds. further biorefining of petroleum paraffin wax with proper bacteria is one of the proposed resolutions to decrease the health threat. therefore in this study iranian heavy cr...

Heavy organics deposition is a common problem in oil industry, especially in oil production, transportation and processing. Wax or solid paraffin series are examples of heavy organics that deposit. Precipitation and crystallization of wax causes major difficulties in different processes. Based on multi-solid theory, a basic model is modified in this paper for wax precipitation in different oils...

With both a classic DNA preparation protocol (including removal of paraffin wax and protein digestion) and a DNA extraction protocol with Chelex 100, the hepatitis B virus genome was searched for using the polymerase chain reaction (PCR) in 30 samples of paraffin wax embedded liver tissue from patients with chronic hepatitis. The classic protocol was more sensitive than the rapid Chelex 100 pro...

AIMS To adapt the polymerase chain reaction (PCR) technique of HIV detection to paraffin wax embedded brain tissue and to compare the results with those obtained using frozen tissue. METHODS HIV antigen and HIV proviral DNA were detected in specimens of frontal lobe using immunohistochemistry and PCR, respectively. DNA was extracted from fresh tissue using standard methods whereas the techniq...

Paraffin wax has been exploited in microactuators because it exhibits a volumetric expansion of ∼15%, at around its melting point. In order to nderstand paraffin wax actuation, for the first time, the melting process has been investigated using a combination of analytical modelling (using tefan’s problem and Neumann’s solution), finite element method (FEM) simulations and actuation data from me...

AIMS To investigate the effects of fixation on the immunohistochemical demonstration of c-erbB-2 oncoprotein using paraffin wax and cryostat sections; to compare c-erbB-2 expression in non-neoplastic and neoplastic gastric tissues. METHODS Adjacent blocks of tumour and non-neoplastic tissue from four gastrectomy specimens were put into a panel of 10 fixatives including acetone, B5, Bouin's fl...

OBJECTIVE Post-traumatic stiff hand is common a condition which causes pain and disability, the paraffin wax bath and joint mobilizations have the key role in its rehabilitation. We conducted the present study to determine the efficacy of paraffin wax bath with mobilization techniques compared with joint mobilization alone. METHODOLOGY This single blind randomized control trial was conducted ...