IR@NEIST - North East Institute of Science and Technology (CSIR)
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Lung function decline: a cohot study in a population exposed to coal dust
Get PDFChronic Obstructive Pulmonary Disease (COPD), is characterized by coughing, shortness of
breath, sputum production, rapid breathing, wheezing, and weight loss due to the energy
required for labored breathing. COPD includes chronic bronchitis and emphysema chronic
bronchitis inflammation
of the lining of the bronchial tubes emphysema permanent
destruction of the alveoli. Chronic respiratory diseases have a preeminent
role in the health
conditions of people residing near coalmine areas with implications for morbidity and excess
mortality from specific causes. Atmospheric pollution from anthropogenic sources such as
coal mining, industrial sources is a serious worldwide concern as it is associated with adverse
health effects.The aim of this study was to find a correlation between coal dust and reductions
in lung function. An environmental health survey was conducted in and around the
surrounding areas of opencast coal mine, Tirap to determine the prevalence of various
respiratory symptoms and to assess pulmonary function among the villagers. Although
cigarette smoking is the main environmental risk factor, only about 15% of smokers develop
clinically significant disease suggesting other influences on disease expression. We screened
412 individuals during surveys at the coal mine site, Assam to find out possible occurrences
of COPD and associated environmental risk factors, mainly coal dust exposure. Lung
function test was done with a portable spirometer. COPD was diagnosed on the basis ATS
guidelines. The subjects were categorized into COPD (Smokers and NonSmokers)
and NonCOPD
(Smokers and NonSmokers).
Air quality was monitored using Respirable Dust
Sampler and analyzed for Respirable Suspended Particulate Matter (RSPM), SO2 and
NO2.Coal dust exposure was a potential factor in development of COP
Adsorption comparison at the á-alumina/water interface: 3,4- dihydroxybenzoic acid vs catechol
Get PDFAdsorption kinetics and isotherms and the surface complexation of 3,4-dihydroxybenzoic acid (3,4DHBA)
and catechol at the -alumina/electrolyte interface were investigated. The state of equilibrium
for adsorption of 3,4-DHBA onto -alumina surface at pH 5 was attained at 120 min, whereas it was
90 min for catechol, but at pH 10 the state of equilibrium for the both the systems was same (
∼60 min).
The pseudo-second-order kinetic equation of nonlinear form (Eq. (3)) fits the experimental kinetic data
significantly better than the linear form (Eq. (2)) in the entire time duration. The adsorption density of
3,4-DHBA onto the -alumina surfaces at pH 10 and at similar experimental conditions is equivalent
to catechol. DRIFT spectra indicate that 3,4-DHBA forms both outer- and inner-sphere complexes and
catechol forms bidentate mononuclear complex with the -alumina surface
Alpha-1 -Antitripsyn deficiency : Role in chronic obstructive Pulmonary disease, In-Proc. Pepcon BIT's 4th Annual Protein and Peptide Conference, Beijing,
Get PDFBrevibacillus laterosporus strain BPM3,a potential biocontrol agent isolated from a natural hot water spring of Assam, India
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Influence of Chain Length of Alcohols on Stokes' Shift Dynamics in Catanionic Vesicles
Get PDFIn this paper, we explore the
Water-soluble organic compounds (WSOCs) in PM2.5 and PM10 at a ubtropical site of India
Get PDFPM2.5 andPM10 samplescollectedatasuburbansiteofnortheasternpartofIndiahavebeenanalysedforparticlemass,
totalcarbon(TC),water-solubletotalcarbon(WSTC),water-solubleorganiccarbon(WSOC),water-solubleinorganic
carbon (WSIC), organic acids (formic, acetic, proponoic and oxalic acids) along with inorganic ions (NO3"12, SO42"12
and NH4"12). Most of the PM10 consists of PM2.5 in the present site (ratio 54 1374%). WSTC content in PM2.5 and
PM10 corresponds to 21% and 16%, respectively, of their total particle masses. Thermo gravimetric analysis showed
the presence of humic-like substances (16 1322%) in particulate samples. Domestic heating and stagnant atmospheric
conditions enhanced the levels of these carbonaceous compounds in PM2.5 and PM10 in winter. Qualitative estimation
of various functional groups by Fourier transform infrared (FTIR) analysis indicates the presence of carboxylic,
hydroxyl,aliphaticandaromatichydrocarbons,aminesandsulphurouscompoundsintheseaerosols.Absoluteprincipal
component analysis applied on the aerosol data resolves four factors. These factors are associated with carbonaceous
aerosols released from combustion of coal and wood, secondary inorganic and organic aerosols and water-soluble
inorganicfractio
