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Inverted Follicular Keratosis (IFK) a benign tumor of skin appendages which is mostly presented as a solitary nodule with keratotic or scaling surface on the face of a middle aged or old patients but it can develop in other parts of the body. Different studies have lead to development of different theories about the role of human papillomavirus (HPV) in this kind of skin tumor. The purpose of this study is to determine the probable role of HPV in this lesion. In a cross-sectional study, we selected all the samples with the diagnosis of IFK referred to pathology department of Farabi Eye Hospital, from April 1995 to April 2006. All these samples were evaluated for histopathologic changes specific for HPV. Immunohistochemistry (IHC) staining was performed using antibody against HPV common antigen. The age range of the patients was 37 to 78 years (Mean=53). 18 patients (58%) were males and 13 patients (42%) were females. The lesion can develop in deferent areas of eyelid. Histopathologic changes regarding viral infection such as focal parakeratosis (80.6%), acanthosis (80.6%), papillomatosis (64.5%), hypergranulosis (67.7%), large keratohyaline granules (32.2%) and koilocytosis (16.1%) were evident within the lesions but HPV detection by IHC revealed positive result in any of the samples. The results about age, sex, anatomic site of the lesion and IHC staining were consistent with previous studies which consider no role for HPV in development of IFK lesions. Performing a more sensitive test such as PCR in order to strongly reject the role of HPV is recommended.

In this paper, the design, performance and characterization of a low temperature argon plasma jet with a Surface Dielectric Barrier Discharge (SDBD)-like structure are presented. Based on this structure, the argon plasma jet is generated in a SDBD-like structure with a mixed electric field. SDBD-like structure, refers to the plasma jet generated by the surface dielectric barrier discharge. The effects of high frequency electric pulse as the main igniter for plasma jet generation and low frequency sinusoidal electric field in order to modify the dynamic behavior of plasma jet are investigated in this paper. The effect of these variations on the plasma jet along with the decrease in pulse repetition frequency were recorded by Schlieren imaging method. This study revealed the important role of decreasing the pulse repetition frequency in the mixed electric field in the SDBD-like plasma jet structure. Increasing the cross-sectional area of the plasma colliding with the target surface is the most important advantage of this structure for the generation of plasma jets. Also, the trend of decreasing plasma column continuity with increasing pulse repetition frequency is another result of this study. Under these conditions, the diameter of the cross section of the plasma jet increases to 9 mm without increasing the consumption of more electrical power and with equal jet length. Finally, the surface hydrophilicity was measured after treatment by plasma jet and the operation resulted in a super-hydrophilic surface. [ABSTRACT FROM AUTHOR]

In this paper, we present a new structure of applying two electrical power supplies to generate ionic wind. In this configuration, two power supplies were applied simultaneously with a modulated voltage to an electrohydrodynamic (EHD) system then corona discharge parameters and EHD thrust characterization was investigated by a corona dryer mechanism. The EHD thrust experiments were performed with a pin to plate and SDBD arrangements. The results show that with the simultaneous application of two power supplies the drying rate in a drop of water as a standard sample was greatly enhanced and the drying time was reduced. Thus, the total evaporation was occurred in 1 minute in the SDBD structure with a power of 7 watts and in 1.5 minutes in pin to plate structure with a power of 2.5 watts. Eventually, it was observed that the use of mixed electric fields enhances the ionic wind, hence increases the non-thermal evaporation process significantly. Furthermore, the drying rate has grown notably In SDBD configuration. [ABSTRACT FROM AUTHOR]

The current research was conducted to examine the effect of Artemisia dracunculus (AD) extract on growth performance, haemato‐immunological, biochemical parameters, and mucosal immunity in the rainbow trout (Oncorhynchus mykiss). The fish were fed with a diet supplemented with 0 (control), 1%, 2% and 3% AD for 8 weeks. The findings indicated that in all groups fed AD, especially at the 2% level, the growth parameters and survival rate significantly increased compared with the control group. Blood biochemical parameters, creatinine, glucose, lactate dehydrogenase (LDH), aspartate aminotransferase (AST), alkaline phosphatase (ALP) and triglyceride were decreased significantly in AD‐treated groups. Total serum protein (TSP) levels, lysozyme (LYZ) and respiratory burst activities (RBA) were increased in the fish fed with AD. TSP levels, ALP and protease (PA) activities in the mucus were significantly increased following fish fed with AD. Increased in the total immunoglobulins (Ig) and superoxide dismutase (SOD) activity were observed in the fish fed with 3% AD. Fish fed with 2% AD showed the highest levels of alternative complement (ACH50) significantly. In addition, the mucus bactericidal activity was significantly increased in some treatments fed AD diet against Lactococcus garvieae and Aeromonas hydrophila. After infection with Yersinia ruckeri, there was a reduction in the mortality rate in the AD‐fed groups compared with the control group. Thus, it can be concluded that diets supplemented with AD can significantly impact diverse physiological parameters in fish, improving their growth performance, blood biochemical parameters and immune response. [ABSTRACT FROM AUTHOR]

In this paper, the dynamics and flow behaviour of an atmospheric argon plasma jet was studied in the new nozzle structure similar to the surface dielectric barrier discharge (SDBD) using the Schlieren imaging method. The effect of plasma jet driven by repetitive high‐voltage microsecond pulses with low‐frequency sinusoidal bias was measured qualitatively in a single mirror Schlieren optical system. The enhancement of plasma jet length and cross‐section of plasma jet with surface in this condition is due to highly turbulent flow of argon plasma jet in this structure. This study revealed the important role of SDBD structure and modulated electric field on the behaviour of plasma jet in a high diameter nozzle. In practice, this technique allows us to increase the jet length of the nozzle output to 5 cm and under these conditions, the diameter of the plasma jet cross‐section is increased to 8 mm, without increasing the electrical power consumption. Eventually, the hydrophilicity of the surface is also measured by the contact angle of a water droplet that decreases from 78° to 8° after surface treatment, implying we were able to reach a super‐hydrophilic surface with this plasma jet structure. [ABSTRACT FROM AUTHOR]

Abstract Introduction Synchronous composite tumors are uncommon. Simultaneous, rather than metachronous or consecutive, occurrences of eosinophilic granuloma and Hodgkin's lymphoma in children are very rare. This is the first report of this kind in the medical literature. Case presentation We report the case of a 12-year-old Iranian boy with eosinophilic granuloma localized in his leg around the knee and Hodgkin's lymphoma in a cervical lymph node. The two tumours occurred synchronously before the patient had received any treatment. Conclusion Several cases of an association between eosinophilic granuloma and lymphoproliferative disorder have been reported. Some of these cases involve Hodgkin's lymphoma and Langerhans cell histiocytosis occurring in the same patient. Genetic or environmental etiologies have been postulated for eosinophilic granulomas which occur following Hodgkin's lymphomas, but have as yet not been proven. To our knowledge, synchronous occurrence of these two malignant processes in a patient who has not received any prior treatment is rare in children.