Occupational Acne

Occupational and environmental acne is a dermatological disorder associated with industrial exposure. Polyhalogenated hydrocarbons, coal tar and products, petrol, and other physical, chemical, and environmental agents are suggested to play a role in the etiology of occupational acne. The people working in the field of machine, chemistry, and electrical industry are at high risk. The various occupational acne includes chloracne, coal tar, and oil acne. The most common type in clinic is the comedones, and it is also seen as papule, pustule, and cystic lesions. Histopathological examination shows epidermal hyperplasia, while follicular and sebaceous glands are replaced by keratinized epidermal cells. Topical or oral retinoic acids and oral antibiotics could be used in treatment. The improvement in working conditions, taking preventive measures, and education of the workers could eliminate occupational acne as a problem

ON GENERALIZED BERTRAND CURVES IN EUCLIDEAN 3-SPACE

In this paper, we generalize the notion of Bertrand curve in Euclidean 3-space analogously as in Minkowski 3-space. According to this generalization, the Bertrand curve conditions of a given space curve are obtained and the relations between Frenet vectors and curvature functions are revealed. A curve that meets the given condition is constructed as an example

Leprosy Reactions

Sudden changes in immune-mediated response to Mycobacterium leprae antigen are referred to as leprosy reactions. The reactions manifest as acute inflammatory episodes rather than chronic infectious course. There are mainly two types of leprosy reactions. Type 1 reaction is associated with cellular immunity and particularly with the reaction of T helper 1 (Th1) cells to mycobacterial antigens. This reaction involves exacerbation of old lesions leading to the erythematous appearance. Type 2 reaction or erythema nodosum leprosum (ENL) is associated with humoral immunity. It is characterized by systemic symptoms along with new erythematous subcutaneous nodules

Effective Atomic Number Determination of Rare Earth Oxides with Scattering Intensity Ratio

Effective atomic numbers (Z(eff)) of scientific samples (rare earth) were determined experimentally by scattering of 59.54 keV gamma photons from 5 Ci(241) Am annular radioactive source. The scattered gammaphotons were collected by using a high-resolution HPGe semiconductor detector placed at 167 degrees to the incident beam. This experiment was carried out on several elements in the atomic range 4 <= Z <= 82 for 59.54 keV incident photons. Photopeak efficiency and air and sample absorption corrections were performed on Rayleigh to Compton scattering intensity ratio; then the ratio was plotted as a function of atomic number and a fit curve was constituted. The effective atomic numbers of rare earth oxide samples were determined by this fit curve. Also, related parameters were determined by absorption technique with the same incident photon energy. Obtained values from this fit curve were compared to theoretical values and were found to closely agree with theoretical calculations

The effect of different fineness values of Afşin Elbistan fly ash on permeability in concrete

Too much CO2 is released during cement production. In many researches, the use of natural or recycled compounds plays an important role in the cement composition. The use of these components contributes both to reducing the amount of waste and to protecting the environment in nature. It is possible to produce an environmentally friendly concrete, thanks to its being a fly ash thermal power plant waste and its use as mineral additive in terms of its composition. In this study, it is aimed to produce impermeable concretes with the use of C type fly ash as substitutes for cement in concrete composition in substitution rates of 10 %, 30 % and 50 %. In order to reduce the permeability of concrete in this direction, as a result of grinding the fly ash in the ball mill for 0, 10, 20, 30, 45 and 60 minutes, concrete samples were prepared with and without admixture (Reference). Capillarity test was performed to determine the permeability at the end of cure periods of 28 and 90 days on concrete samples. According to the results obtained at the end of 28 days, the best impermeability was achieved in the mixture with 50 % fly ash replacement and 60 minutes grinding time. In 90 days, the best impermeability was obtained in the mixture with 30 % fly ash replacement and 0 minutes of grinding time. As a result, it was seen that permeability decreased with increasing thinness and substitution rate of fly ash in concrete composition

Activity Criteria in Behçet’s Disease

Behçet’s disease is a complex disease characterized by remission and activation periods of unknown duration. It has an unpredictable course. Behçet’s disease shows a heterogeneous pattern of organ involvement that occurs in recurrent episodes of acute inflammation throughout the course of the disease. Disease activity in Behçet’s disease is difficult to define because of its fluctuating course, lack of laboratory tests reflecting overall disease activity, absence of a standardized form to report the severity of Behcet’s disease manifestations and also trying to develop new diagnostic criteria. This led to the development of standardized disease activity index. To be useful, a measurement of disease activity must be valid, reliable, and simple enough to use in routine clinical practice. We will try to explain what the situation is in terms of Behçet’s disease activity index

Immünokompetan herpes zoster hastalarında kemik iliği fonksiyonları ve yeni enflamasyon belirteçlerinin değerlendirilmesi

Abstract : Background and Design: Herpes zoster (HZ) is a viral infection characterized by dermatomal vesicles caused by the reactivation of the latent varicella-zoster virus (VZV). There are conflicting reports regarding the effects of VZV on bone marrow functions. In this study, we aimed to evaluate bone marrow function and systemic inflammation in immunocompetent HZ patients.Materials and Methods: This study included patients aged & GE;18 yr diagnosed with HZ and admitted to a dermatology outpatient clinic between June 2011 and June 2021. Hematological parameters in routine hemogram tests of patients with HZ and new inflammatory markers, such as neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), systemic immune inflammation index, and platelet-neutrophil ratio (PNR), were determined and compared with healthy control groups.Results: Thrombocytopenia was observed in 6.1% and lymphopenia in 8% of 461 HZ patients. The mean leukocyte (white blood cell), lymphocyte, neutrophil, eosinophil, and platelet (PLT) counts in HZ patients were statistically significantly lower than in the control group (p<0.05). NLR and PLR values were statistically significantly higher in HZ patients than in the control group (p<0.05). PLT, eosinophil count, and PNR values were statistically lower in HZ patients aged & GE;65 yr than in patients aged <65 yr, whereas mean platelet volume and NLR values were higher (p<0.05).Conclusion: Thrombocytopenia and lymphopenia may occur in immunocompetent HZ patients. NLR and PLR values increase in HZ patients. The increase in inflammatory markers and decrease in platelet count are more evident in HZ patients aged & GE;65 yr

A New Side Effect of Intravitreal Dexamethasone Implant (Ozurdex®)

Dexamethasone implant, 0,7 mg (Ozurdex, Allergan, Inc., Irvine, CA, USA), is drug mostly used in the treatment of the diabetic macular edema and edema related to retinal vein occlusion. By reporting this case we aimed to report a new side effect of 0.7 mg intravitreal dexamethasone implant that has not been reported in the literature before

Evaluation of bone marrow functions and new inflammatory markers in patients with immunocompetent herpes zoster

Background and Design: Herpes zoster (HZ) is a viral infection characterized by dermatomal vesicles caused by the reactivation of the latent varicella-zoster virus (VZV). There are conflicting reports regarding the effects of VZV on bone marrow functions. In this study, we aimed to evaluate bone marrow function and systemic inflammation in immunocompetent HZ patients. Materials and Methods: This study included patients aged &#8805;18 yr diagnosed with HZ and admitted to a dermatology outpatient clinic between June 2011 and June 2021. Hematological parameters in routine hemogram tests of patients with HZ and new inflammatory markers, such as neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), systemic immune inflammation index, and platelet-neutrophil ratio (PNR), were determined and compared with healthy control groups. Results: Thrombocytopenia was observed in 6.1% and lymphopenia in 8% of 461 HZ patients. The mean leukocyte (white blood cell), lymphocyte, neutrophil, eosinophil, and platelet (PLT) counts in HZ patients were statistically significantly lower than in the control group (p&lt;0.05). NLR and PLR values were statistically significantly higher in HZ patients than in the control group (p&lt;0.05). PLT, eosinophil count, and PNR values were statistically lower in HZ patients aged &#8805;65 yr than in patients aged &lt;65 yr, whereas mean platelet volume and NLR values were higher (p&lt;0.05). Conclusion: Thrombocytopenia and lymphopenia may occur in immunocompetent HZ patients. NLR and PLR values increase in HZ patients. The increase in inflammatory markers and decrease in platelet count are more evident in HZ patients aged &#8805;65 yr