A comparative evaluation of mechanical wear of adhesives used for bonded retainers that underwent brushing for 1 hour under 36 mm of linear action, using computer-aided 3D scan-an in vitro study.

Objectives: The aim of the present study was to comparatively evaluate the mechanical wear of adhesives used in bonded retainers.

Materials And Methods: Eighty mandibular acrylic teeth were included in the study that were divided into 4 different groups based upon the composite used. Each acrylic tooth was bonded with a retainer wire and composite of their respective group (Heliosit, Restofill, Tetric-N-flow, and Filtek Z350 XT).

Biomonitoring of airborne platinum group elements in urban traffic police officers.

In the present study, an attempt was made to study the levels of platinum (Pt), palladium (Pd), and rhodium (Rh) in respirable suspended particulate matter samples and respective blood samples of occupationally exposed traffic personnel in selected sites of Hyderabad city. The maximum concentration of platinum group elements in air dust samples of Hyderabad city were as follows: Pt = 1,416 µg/m(3), Pd = 1,024 µg/m(3), and Rh = 1,352 µg/m(3). The blood samples of occupationally exposed personnel of Hyderabad city showed Pt as high as 6.

Air Pollution Tolerance Index (APTI) of some tree species growing near rail roads of Madurai, Tamil Nadu (India).

Biological monitoring and assessment studies due to urban--rail road pollutants were carried out using Air Pollution Tolerance Index (APTI) of plants. Four plant (leaf) parameters--namely ascorbic acid, total chlorophyll, relative water content and leaf extract pH were combined together in a formulation signifying the APTI of plants. APTI was calculated for five different species such as Azadirachta indica, Delonix regia, Ficus religiosa, Pongamia pinnata and Polyalthia longifolia growing in two different areas, i.

Assessing risk of heavy metals from consuming food grown on sewage irrigated soils and food chain transfer.

Heavy metal pollution of soils resulting from sewage and wastewater irrigation is causing major concern due to the potential risk involved. In the present study Musi River and its environs were assessed for heavy metal contamination. The study area was assessed for Zn, Cr, Cu, Ni, Co and Pb in soils, forage grass, milk from cattle, leafy and non-leafy vegetables.

Large distinct diffusivity in binary mixtures confined to zeolite Nay.

Mutual diffusion coefficients have been computed from molecular dynamics simulation of two different binary mixtures confined to zeolite NaY. In one of these mixtures, where one component is from the linear regime and the other from the anomalous regime of the levitation effect [S. Yashonath, P.

Removal of arsenic(III) from aqueous solutions using fresh and immobilized plant biomass.

The ability of Garcinia cambogia, an indigenous plant found in many parts of India, to remove trivalent arsenic from solution was assessed. Batch experiments were carried out to characterize the As(III) removal capability of fresh and immobilized biomass of G. cambogia.

Potential of Hemidesmus indicus for phytoextraction of lead from industrially contaminated soils.

Many sites in the industrial region of Kattedan near Hyderabad, Andhra Pradesh (AP), India are contaminated with high concentrations of lead. The use of plants to remove toxic metals from soils (phytoremediation) is emerging as a potential strategy for cost-effective and environmentally sound remediation of contaminated soils. We studied remediation of soils contaminated with lead using a lead hyperaccumulating plant, Hemidesmus indicus.

Removal of lead from aqueous solutions using an immobilized biomaterial derived from a plant biomass.

Because of the severity of heavy metal contamination and potential adverse health impact on the public, a tremendous effort has taken place to purify waters containing toxic metal ions. Traditional methods which have been employed prove to be costly and prohibitive for low level waste remediation. Biosorption is presented as an alternative to traditional physicochemical means for removing toxic metals from ground and wastewaters.

Sinus histiocytosis with massive lymphadenopathy: complicated by autoimmune hemolytic anemia.

Sinus histiocytosis with massive lymphadenopathy is a rare histiocytic disorder with very few case reports in Indian literature. Immunological abnormalities have been documented in few cases. We report one such case of a child presenting with generalized lymphadenopathy and complicated by autoimmune hemolytic anemia, suggestive of an associated immune dysfunction.

Fractionation studies and bioaccumulation of sediment-bound heavy metals in Kolleru lake by edible fish.

Kolleru lake is the largest fresh water lake in the districts of East and West Godavari of Andhra Pradesh, India. Many anthropogenic sources contribute to the heavy metal pollution in the lake and the bioaccumulation of heavy metals in fish helps in assessing the aquatic pollution. Total contents and fractionation of selected heavy metals, viz.

Risk assessment and pathway study of arsenic in industrially contaminated sites of Hyderabad: a case study.

Different areas in the industrial region of Patancheru near Hyderabad, Andhra Pradesh (A.P), India are contaminated with high concentration of arsenic, which is attributed to industrial source like veterinary chemicals, pharmaceuticals, pesticide industries, etc. Fourteen villages of this area of Patancheru were assessed for arsenic contamination by collecting samples of water (surface and ground), soil, fodder, milk, and vegetables.

Mutual diffusion in a binary Ar-Kr mixture confined within zeolite NaY.

Molecular dynamics investigations of the mutual diffusion coefficients in an Ar-Kr mixture confined in the zeolite NaY are reported. Velocity auto- and cross correlations were computed at two different temperatures (200 and 600 K). The importance of the appropriate choice of reference frame while evaluating the time correlation functions is illustrated for argon in the zeolite NaY.

Outbreak of encephalitis in Bellary District of Karnataka & adjoining areas of Andhra Pradesh.

An outbreak of encephalitis in Bellary district of Karnataka state and adjoining areas of Andhra Pradesh which occurred during October 1986 to January, 1987, has been investigated. Out of the 219 patients reported, 110 were from Bellary district and the remaining 109 were from Anantapur and Kurnool districts of Andhra Pradesh; 131 (59.8%) were males and 88 (40.

Japanese encephalitis in children in Bellary Karnataka.

One hundred and fifty cases of Japanese encephalitis (JE) in children below 12 years of age admitted to the Headquarters Hospital, Bellary Medical College during October, 1986 to January, 1987 were studied. The youngest child affected was 1 year old. The ratio of male to female was 2:1.