The Taguchi L09 DOE method was used to optimize the decided parameters to achieve higher production rate. As we select larger the better SN ratio the larger value will reflect the better characteristics, as per the equation shown below. S/N = −10*log (Σ (1/Y2)/n). where. n is the number of experiments and.

Pulmonary function tests (PFT) were recorded using RMS-PFT machine. The pulmonary function test parameters among the quarry workers were assessed in the various occupational categories.

Pulmonary function test were recorded on 50 subjects. Statistical analysis amongst the stone crusher workers was carried out by Analysis of Variance (ANNOVA) test. Results: It was concluded from this study that pulmonary function test decreases as duration of exposure to silica dust increases.

Cone crusher basics in 4 minutes. This is the starting point for understanding how cone crushers work – and how they can make your mine or quarry more productive. Elsewhere on the site you can find detailed information about all aspects of crushing and screening, but to make sense of these it helps to understand the basics of cone crushing.

Corpus ID: 11850819; Pulmonary Function Test in Stone Crusher Plant Workers @inproceedings{Mirdha2015PulmonaryFT, title={Pulmonary Function Test in Stone Crusher Plant Workers}, author={Dr. Priyanka Mirdha and Dr. N. D. Soni and Dr. Kamla Choudhary and Shilpa Solanki and Rakesh Sagu}, year={2015} }

The Spiro metric pulmonary function tests (PFT) were studied in stone crusher workers (n = 120) and normal healthy controls (n =120) from the Karad taluka Western region in …

Background: Thousands of artisanal workers are exposed to mineral dusts from various origins in the African Copperbelt. We determined the prevalence of respiratory symptoms, pulmonary function, and …

Keywords:- Pulmonary function test, stone crusher workers, silica, lung function test, silicosis, duration of exposure INTRODUCTION Today the industrial revolution has brought about the remarkable changes in ecosystem and atmosphere. The stone crushing industry in India has been growing rapidly due to increasing demand from the construction ...

Chronic exposure to dust due to stone quarrying may increase the risk of respiratory problems and impaired lung function-cigarette smokers are at higher risk. BACKGROUND Respiratory problem is one of the major health hazards in dust-exposed workers; it is a major cause of morbidity and mortality all over the world. OBJECTIVE To …

The Spiro metric pulmonary function tests (PFT) were studied in stone crusher workers (n = 120) and normal healthy controls (n =120) from the Karad taluka Western region in Maharashtra state.

Primary, secondary, and tertiary crushing are three stages in the comminution process that break down large rocks into smaller pieces of varying sizes. Each stage uses different types of crushers and has distinct advantages and disadvantages. This article provides a comprehensive guide to primary, secondary, and tertiary crushing.

A cross-sectional type of observational study was conducted at 7 various stone crusher units on 120 male stone crushers and 120 healthy male controls. Values of FEF25-27% and PEFR were recorded on computerized spirometer and were compared between …

Pre‐employment and periodic clinical examination, chest radiography, and pulmonary function tests of the stone‐cutting workers should be done. Application of …

It was concluded that no significant difference found between silicon dust exposed group and non-exposed group, both the groups showed slightly restrictive lung defects but the non-Exposed group was bit better than the silicon exposed group. Purpose: The study was planned to evaluate the influence of silicon dust on lung function between stone …

There are two main types of impact crushers: horizontal shaft impactors (HSI) and vertical shaft impactors (VSI). HSI crushers utilize a horizontal rotor that throws the material on stationary anvils or curtains, which results in the material breaking upon impact. VSI crushers, unlike the traditional crushers, have a vertical rotor which ...

The aggregate crushing value formula is given below, Aggregate crushing value = (W3 / W) or W3 / (W2 – W1) W1 = Empty weight of cylindrical Measure. W2 = Weight of Aggregate with Cylindrical Measure. W = W2 –W1 = Weight of Aggregate Sample. W3 = Weight of crushed aggregate sample passed through 2.36 mm IS Sieve.

Workers at stone crushing site are exposed to silica dust which leads to pulmonary function deterioration. The objective of this study was to study the pulmonary function test in stone crusher ...

The objective of this study was to study the pulmonary function test in stone crusher workers. This study was conducted at Stone crusher plant located at Nagaur district (Ajmer region) of Western Rajasthan. Male workers working at site were included in this study, this study was conducted on 100 subjects out of which 50 non-controls and 50 were ...

The pulmonary function was performed in quarry workers and controls. Pulmonary functions were assessed by using computerised spirometer. On statistical analysis of …

Stone crushing in India is a small scale industry where a large number of laborers work. Workers at stone crushing site are exposed to silica dust which leads to pulmonary function deterioration.

The aim of this study is to examine the effects of stone crushing in West Bengal, India, by comparing pulmonary functions of stone crushing workers with those …

1. Introduction. Several studies have documented high to very high levels of mineral dust in worksites—and also the surrounding environment—where stones or rocks are crushed or milled using various types of mechanical crushers to produce aggregates for use in the construction of roads and buildings [1,2,3,4,5,6].In these publications, the …

It was concluded from this study that pulmonary function test decreases as duration of exposure to silica dust increases, which may increase the risk the respiratory problems. Background and Objectives: In stone crusher workers, one of the major health hazards is respiratory disorder. Globally, it is most common occupational disease and a major …

Download scientific diagram | Statistical Analysis of Pulmonary Function Test among stone crusher workers depending upon from publication: Deterioration of pulmonary function with duration of ...

Keywords: Pulmonary function test, Stone crusher workers, Silica, Duration of exposure, Occupational disease. Introduction India is a developing country and the construction

Purpose: The study was planned to evaluate the influence of silicon dust on lung function between stone crushing workers and general population. Methodology: The one …

10 years (Group III) with respect of stone crushers with duration of exposure up to 5 years (Group I) and 6 to 10 years of exposure (Group II). Lung function tests revealed a statistically significant (P < 0.05) reduction in lung function test parameters among manual workers compared to non-manual group of workers and

A cluster of 50 stone Crushing units located at Pammal, in Suburban Chennai, the capital of Tamil Nadu State, India, is a Source of high levels of dust generation in the vicinity of the crushers ...

A cluster of 50 stone Crushing units located at Pammal, in Suburban Chennai, the capital of Tamil Nadu State, India, is a Source of high levels of dust generation in the vicinity of the crushers ...

Results: It was concluded from this study that pulmonary function test decreases as duration of exposure to silica dust increases. Conclusion: Increased duration of exposure to silica dust may increase the risk the respiratory problems. Keywords: Pulmonary function test, Stone crusher workers, Silica, Duration of exposure, Occupational disease