scholarly journals Comparison of European Standard Patch Test Results of 330 Patients from an Occupational Diseases Hospital

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Özge Gündüz ◽  
Aslı Aytekin ◽  
Engin Tutkun ◽  
Hınç Yılmaz
Keyword(s):  
Patch Test ◽  
Preventive Measures ◽  
Potassium Dichromate ◽  
Standard Test ◽  
Working Environment ◽  
Test Results ◽  
European Standard ◽  
Household Activities

Background and Aim.Contact dermatitis (CD) is the most prevalent occupational skin disease with a significant impact on quality of life. Patch testing is used for the identification of responsible allergens which may improve protective and preventive measures in the workplace. Herein, we aim to identify the demographic characteristics and occupation of patients with early diagnosis of occupational CD and compare patch test results.Materials and Methods.The study included 330 patients referred to our clinic between April 2009 and April 2011 and who were patch-tested with 28-allergen European Standard Test.Results.126 (38%) patients were female and 204 (62%) were male with a mean age of 36.12 (±13.13) years. Positive allergic reactions were observed in 182 (55%) patients. Nickel sulphate (41/126) and potassium dichromate (39/204) were significantly the most common allergens in women and men, respectively (P<0.005). Additionally, the most common occupation in women was household activities (83/126) and in men was manufacturing (80/204).Conclusion.The allergens to which people become sensitized differ according to their working environment and occupation. Classification of occupations is important for identification of sensitization risks and monitoring of changes in allergen distribution of different occupations.

Relationship between Test Results of the ACSIRO and ASTM C1202 Methods

2006 ◽  
Vol 302-303 ◽  
pp. 567-571 ◽  
Author(s):  
Wei Wen Li ◽  
Fa Guang Leng ◽  
Xiong Zhou Yuan
Keyword(s):  
Standard Test ◽  
Total Charge ◽  
Test Results ◽  
Additional Test ◽  
Simple Modification ◽  
Concrete Quality ◽  
The Difference ◽  
Astm C1202 ◽  
The Relationship

The ASTM C1202 method is observed that the total electric charge passed is not an ideal indicator for classification of concrete quality when different binders are considered. Considering the drawback of the ASTM 1202 method, a simple modification to the ASTM C1202 method is recommended. The modification involves an additional test using curing water as electrolyze solution. The difference in the total charge passed obtained between standard test and test performed in curing water is suggested as an indicator for concrete quality. The test results show that there exists a good correlation between the ACSIRO and the ASTM C1202 methods. The relationship can be formulated as a linear function.

scholarly journals Evaluation of the role of patch test in endogenous eczemas

2020 ◽  
Vol 8 (1) ◽  
pp. 161
Author(s):  
Amit Bahuguna ◽  
Saurabh Mahajan ◽  
Arun K. Yadav ◽  
Aradhana Sood ◽  
Sumit Lathwal
Keyword(s):  
Patch Test ◽  
Life Quality ◽  
Positive Outcome ◽  
Test Results ◽  
Seborrhoeic Dermatitis ◽  
Management Protocol ◽  
Study Participants ◽  
Nummular Eczema

Background: Endogenous eczemas have a significant effect on quality of life of patients and is a huge burden on healthcare. There is evidence that external factors play an important role in endogenous eczemas. The study was conducted to evaluate the role of patch test in endogenous eczemas and to identify any causal or aggravating allergen, the avoidance of which could augment response to standard therapy and prevent relapse.Methods: Four groups of 27 patients each, with clinical diagnosis of one of the major endogenous eczema namely, Atopic dermatitis, nummular eczema, pompholyx and seborrhoeic dermatitis satisfying the inclusion and exclusion criteria were included in the study. Demographic and clinical details were recorded and were patch tested with the Indian standard patch test battery. Dermatology life quality index (DLQI or children’s DLQI) was used at the presentation and after 03 months to assist in assessing the subjective improvement after avoidance of the agents incriminated by the patch test. Results: Of the 108 study participants, 61 (56.5%) patients had one or more positive results in the study, with maximum 21 (77.8%) in pompholyx and minimum of only 10 (37%) in patients of seborrhoeic dermatitis group. About, 36 (33.3%) patients had no change and 05 (4.6%) had worsening of their eczema.Conclusions: We found positive outcome in the form of clinical improvement or cure following the avoidance of allergens implicated by patch testing. This study recommends inclusion of patch test in the management protocol of endogenous eczemas.

scholarly journals Common Contact Sensitizers among Patients with Hand Eczema: A Multicenter-Study in Nepal

2016 ◽  
Vol 14 (1) ◽  
pp. 14-17
Author(s):  
S. Bhattarai ◽  
A. Rijal ◽  
S. Agrawal
Keyword(s):  
Contact Dermatitis ◽  
Allergic Contact Dermatitis ◽  
Patch Test ◽  
Patch Testing ◽  
Potassium Dichromate ◽  
College Teaching ◽  
Hand Eczema ◽  
Contact Allergens ◽  
Allergic Contact

Introduction: Allergic contact dermatitis in Nepal is not an uncommon disorder. Patch testing is a well established method of diagnosing allergic contact dermatitis. Patients with contact dermatitis are well known to have impaired quality of life which often leads to frequent dermatological consultations.Objective: Lack of data from Nepal has prompted us to undertake this study with the aims to know the frequency of allergic contact dermatitis and the commonest contact allergens among the patients with Hand eczema attending the out-patient department of dermatology, B.P. Koirala Institute of Health Sciences and Kathmandu Medical College Teaching Hospital.Material and Methods: A total of 256 patients were included in the study. Out of them 195 with hand eczema agreed to participate and undergo patch testing. The antigens used included the Indian standard series of patch test allergens approved by Contact and Occupational Dermatoses Forum of India.Results: Hundred and ten cases (56.4%) were patch test positive (PTP) at 48 as well as 96 hours to at least one allergen. PTP was seen more commonly in females. The most common allergen in females was nickel sulphate followed by cobalt chloride, gentamicin and mercapto mix while males were positive to potassium dichromate, followed by epoxy resin, fragrance mix and nickel sulphate.Conclusion: Patch testing has proved a useful tool for the detection of allergic contact dermatitis and for identification of contact allergens. When positive reactions correlate with environmental exposure the test usually assists the physician in establishing the cause of dermatitis, hence treating the patients and improving their quality of life.Nepal Journal of Dermatology, Venereology & Leprology, Vol.14(1) 2016, pp.14-17

Justification of approaches to the prevention of occupational and work-related diseases in workers during production and use of artificial mineral fibers

2020 ◽  
pp. 32-40 ◽  
Author(s):  
E. Valeyeva ◽  
R. Galimova ◽  
O. Kopytenkova ◽  
A. Distanova
Keyword(s):  
Skin Neoplasms ◽  
Mineral Wool ◽  
Working Environment ◽  
Basic Principles ◽  
Mineral Fibers ◽  
Work Related ◽  
Safe Working ◽  
Artificial Mineral

Improvement of the quality of working environment by creating safe working conditions, identification and classification of risks are the basic principles for the prevention of occupational and work-related diseases in workers during production and use of artificial mineral fibers. The most important stage of prevention is therapeutic and preventive measures, including prevention of occupational skin neoplasms in the production of continuous glass fiber, prevention of dusty lung diseases when using mineral wool, vibration- and noise-induced diseases, organization of therapeutic and preventive nutrition.

scholarly journals Patch Testing for Contact Allergy and Allergic Contact Dermatitis

2008 ◽  
Vol 1 (1) ◽  
pp. 42-51 ◽  
Author(s):  
Radoslaw Spiewak
Keyword(s):  
Contact Dermatitis ◽  
Allergic Contact Dermatitis ◽  
Patch Test ◽  
Contact Allergy ◽  
Diagnostic Methods ◽  
Test Results ◽  
Costs Of Treatment ◽  
Allergic Contact

Contact allergy (CA) is alteration of immune response with readiness to develop an inflammatory reaction against a specific substance of low molecular weight (hapten). The prevalence of CA is estimated at 26-40% among adults, and 21-36% children. A proportion of people with CA will remain asymptomatic, among the rest, the most frequent clinical manifestation is allergic contact dermatitis (ACD) with lifetime prevalence estimated at 10%. Less frequent manifestations include allergic contact stomatitis, conjunctivitis, vaginitis, systemic reactions, implant intolerance, and rarely urticaria, asthma, and allergic rhinitis. Patch test (epicutaneous test) is the gold standard in the diagnosis of CA and ACD: Performing the test significantly increases probability of accurate diagnosis, reduces costs of treatment, and leads to improved patients’ quality of life. Patch test results may be influenced by patient’s medication and health status, and interpretation requires due knowledge and experience. Other diagnostic methods are more laborious and not validated; no in vitro tests are available for routine application at present.

Granular soils in rigid-wall permeameters: method for determining the degree of saturation

1989 ◽  
Vol 26 (1) ◽  
pp. 71-79 ◽  
Author(s):  
Robert P. Chapuis ◽  
Karsten Baass ◽  
Luc Davenne
Keyword(s):  
Hydraulic Conductivity ◽  
Test Procedure ◽  
Rigid Wall ◽  
Standard Test ◽  
Test Method ◽  
Degree Of Saturation ◽  
Granular Soils ◽  
Test Results ◽  
Constant Head

The standard test method used to determine the hydraulic conductivity of a clean granular soil (rigid-wall permeameter –constant head difference) requires that the specimen be saturated with an air-vacuum pump. However, no method is provided to verify whether the sample is fully (100%) saturated. This paper proposes such a method and establishes its accuracy. The method allows for quality control of the rigid-wall permeameter itself: it can detect if it is watertight but not airtight, according to the achieved degree of saturation. A detailed example is given on a proposed data sheet. The reasons for partial saturation and the problems related to air bubbles are examined. The result of this examination is a simplified test to check a permeameter, based on the fact that for unsaturated conditions the hydraulic conductivity depends on which of two ways the water seeps in a given direction. A few modifications in the preparation of the specimen and the test procedure are suggested so as to improve the quality of test results. Key words: permeability, laboratory, granular soils, rigid-wall permeameter, saturation.

scholarly journals Penentuan Mutu Kelapa Sawit Menggunakan Metode K-Means Clustering

KOMTEKINFO ◽  
2019 ◽  
Vol 5 (3) ◽  
pp. 1-9
Author(s):  
Andri Nofiar ◽  
Sarjon Defit ◽  
Sumijan
Keyword(s):  
Data Mining ◽  
Palm Oil ◽  
Laboratory Testing ◽  
Quality Data ◽  
Test Results ◽  
Clustering Method ◽  
Data Mining Approach ◽  
Cluster 2

The classification of the quality of palm oil in PT Tasma Puja is still done by laboratory testing and then the data is saved manually in Excel. The method of grouping takes time and allows data to be lost. With the development of knowledge, it can be replaced by a data mining approach that can be used to classify the quality of palm oil based on its standards. The k-Means clustering method can be applied to classify the quality of palm oil based on water, dirt and free fatty acids. The data used is the quality data of palm oil in December 2017 as many as 31 data with criteria of good, very good and not good. The test results contained 3 clusters, namely cluster 0 for good categories amounted to 12 data, cluster 1 for very good category amounted to 13 data and cluster 2 for less good categories amounted to 6 data. The k-Means clustering method can be used for data processing using the concept of data mining in grouping data according to criteria.

Sign in / Sign up

Export Citation Format

Share Document