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Search Results: 1 - 10 of 149862 matches for " H Chawla "
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Orthodontic management of faciolingual horizontally impacted maxillary central incisor
Chawla H,Kapur A
Journal of the Indian Society of Pedodontics and Preventive Dentistry , 2009,
Abstract: This paper describes the successful alignment of a horizontally impacted maxillary central incisor positioned high in the vestibule, in a 15-year-old girl, by purely orthodontic means. A unique and innovative technique for traction was employed so as to cause minimal injury to the neighboring soft tissue. The article is a step forward in establishing the predictability of orthodontic alignment in management of such cases, which may become the method of choice over extractions or surgical repositionings.
A pilot study of chlamydia trachomatis pneumonia in infants
Chawla R,Bhalla P,Sachdev H
Indian Journal of Medical Microbiology , 2004,
Abstract: Chlamydia trachomatis is currently recognized as one of the most common sexually transmitted pathogen and a major cause of perinatally acquired infection. Vertical transmission of infection from mother to the infant may result in the development of conjunctivitis and pneumonia. The study was conducted with the aim of determining the prevalence of C. trachomatis pneumonia and to identify its clinical manifestations. Nasopharyngeal aspirates were collected from 50 infants (4-24 weeks of age) with pneumonia. C. trachomatis was detected in nasopharyngeal aspirates by direct fluorescent antibody (DFA) staining. Using DFA, C. trachomatis was found in 12.5% of infants. C. trachomatis pneumonia was associated with the age group of 4-12 weeks, cough of more than 7 days duration, presence of conjunctivitis, milder grade of pneumonia and absence of fever. The study showed a high prevalence of C. trachomatis pneumonia in infants.
Is tongue thrust that develops during orthodontic treatment an unrecognized potential road block?
Chawla H,Suri Sanjay,Utreja A
Journal of the Indian Society of Pedodontics and Preventive Dentistry , 2006,
Abstract: The role of tongue thrust has often been suspected, long debated and largely dispelled as a primary etiological factor of malocclusion. However, tongue thrust may contribute to poor occlusal intercuspation both during and after treatment. A tongue thrust may also develop during orthodontic mechanotherapy as a result of the transient creation of intra and interarch spaces and this little recognized phenomenon was found to occur in many randomly followed cases. In many instances, this seemingly adaptive and secondary response of the tongue posture and function may persist and thereafter impede the resolution of intra and interarch problems.
Distribution of malocclusion types among thumb suckers seeking orthodontic treatment
Singh S,Utreja A,Chawla H
Journal of the Indian Society of Pedodontics and Preventive Dentistry , 2008,
Abstract: The present study was conducted to evaluate the influence of thumb sucking and its duration on the type of malocclusion. A total of 410 North Indian individuals between ages 12-30 years, 161 males and 249 females were examined. A specially designed proforma was used to record the detailed history of the individual. Among the etiological factors it was found that history of thumb sucking was present in 13.9% and significantly related to Class II div 1 malocclusion. When thumb sucking exceeded 18 months, it was found statistically significant (P < 0.1) in Class II skeletal malocclusion, in open bite (P < 0.1) and in extreme overjet (P < 0.5). Conclusion: If thumb sucking is not treated early, it can cause skeletal Class II malocclusion, anterior open bite and excessive overjet.
A study of influence of sugars on the modulations of dental plaque pH in children with rampant caries, moderate caries and no caries
Utreja D,Tewari A,Chawla H
Journal of the Indian Society of Pedodontics and Preventive Dentistry , 2010,
Abstract: The present study is undertaken to find out the pH of resting plaque in children with no caries, moderate caries and rampant caries and to determine the modulations of plaque pH with different sugar solution rinses viz: sucrose, glucose and fructose. The study was carried out on forty five children, in the age group of 3-10 years (25 males and 20 females). The child was given 10 ml of test solution and was asked to rinse and swish it in the mouth for a period of 30 sec. Plaque samples were taken from 20 different spots after 5, 10, 20 and 30 min of the rinse and pH values of all the samples were determined. Results show that there was a statistically significant (P<0.05) difference between the pH values of plaque at different intervals of time with sucrose, fructose and glucose solution rinse in children with moderate caries, rampant caries as compared to the caries free group. Sucrose was found to be highly cariogenic in all the children with a greater potentiating effect in moderate and rampant caries. Glucose also appeared to have a cariogenic role while fructose had the least of it all.
Resilience of human brain functional coactivation networks under thresholding
S. Sarkar,S. Chawla,H. Weng
Computer Science , 2014,
Abstract: Recent studies have demonstrated the existence of community structure and rich club nodes, (i.e., highly interconnected, high degree hub nodes), in human brain functional networks. The cognitive relevance of the detected modules and hubs has also been demonstrated, for both task based and default mode networks, suggesting that the brain self-organizes into patterns of co-activated sets of regions for performing specific tasks or in resting state. In this paper, we report studies on the resilience or robustness of this modular structure: under systematic erosion of connectivity in the network under thresholding, how resilient is the modularity and hub structure? The results show that the network shows show strong resilience properties, with the modularity and hub structure maintaining itself over a large range of connection strengths. Then, at a certain critical threshold that falls very close to 0, the connectivity, the modularity, and hub structure suddenly break down, showing a phase transition like property. Additionally, the spatial and topological organization of erosion of connectivity at all levels was found to be homogenous rather than heterogenous; i.e., no "structural holes" of any significant sizes were found, and no gradual increases in numbers of components were detected. Any loss of connectivity is homogenously spread out across the network. The results suggest that human task-based functional brain networks are very resilient, where the whole network structure fails only when connectivity is almost fully removed from the network. The findings may help further the understanding of dynamics of and relationships between structural and functional brain networks.
Mechanical Properties of Epoxy Resin – Fly Ash Composite  [PDF]
Manoj Singla, Vikas Chawla
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2010, DOI: 10.4236/jmmce.2010.93017
Abstract: There has been significant increase in use of glass fibre reinforced composites as structural materials in naval mine countermeasure surface ships. Sea mines when detonated emit underwater shock waves, which could impart severe loading to naval ship structure; there are attempts to model the response of a ship structure to this loading. For the model to be accurate & useful material property data determined experimentally by taking different weight percentage of glass fibers (E-300, mat form) with epoxy resin & comparison with fly ash reinforced composite. Specimens in the form of cube of size 10X10X10 (mm’s) are used & results are presented. Fracture behaviour of composite can also be studied using SEM. SEM analysis is done to observe distribution of fly ash particles in matrix, resin fly ash interface, glass fibre matrix interface, glass fibre distribution etc,.
Impact of Nutritional Counselling on Nutritional Status of Postmenopausal Women  [PDF]
Gurpreet Kaur, Paramjit Chawla
Food and Nutrition Sciences (FNS) , 2015, DOI: 10.4236/fns.2015.64044
Abstract: The aim of the study was to assess the impact of nutrition counselling on food intake and anthropometric measurements in postmenopausal women. Sixty postmenopausal women were selected from two villages of Sangrur district and were divided into two groups—Group I (Control) and Group II (Experimental) containing 30 subjects each. Subjects of Group II were imparted nutrition counselling (NC) regarding benefits of Aloe vera and its use in diet in individual and group contacts once in a week, for a period of three months. Aloe vera plants were also distributed to be used in their diets. Dietary intake of subjects for 3 consecutive days by 24 hr recall method was recorded before and after nutrition counselling. The average daily nutrient intake of diets was calculated by using Diet Cal. Anthropometric parameters were calculated before and after counselling. Dietary survey revealed that intake of cereals, fats/oil and sugar/jaggery decreased significantly (p ≤ 0.05) whereas intake of green leafy vegetable, other vegetables and fruits increase significantly (p ≤ 0.01) after counselling. A significant decrease in energy, carbohydrate, fat and significant increase intake in iron, calcium, potassium, Vitamin C and β-carotene content was observed. A significant reduction was observed for weight, body mass index (BMI), mid upper arm circumference (MUAC), triceps skinfold thickness (TSFT) and waist hip ratio (WHR) by 4.9%, 3.98%, 2.9% and 2.17% respectively, while random blood sugar (RBS), systolic blood pressure (SBP) and diastolic blood pressure (DBP) decreased by 25.21%, 13.74% and 8.03% after counselling. After nutrition counselling subjects adopted good nutritional practices and use of Aloe vera leaves in diets which improved their health status of postmenopausal women.
Ocular changes in multi-transfused children with β-thalassaemia receiving desferrioxamine: A case-control study
P Dewan, S Gomber, H Chawla, J Rohatgi
South African Journal of Child Health , 2011,
Abstract: Objectives. This study was planned to determine the prevalence of ocular abnormalities in multi-transfused children with β-thalassaemia receiving desferrioxamine and to determine the association of abnormalities with the patients’ age, serum ferritin level, haemoglobin concentration, and dosage and duration of treatment with desferrioxamine. Methods. Twenty-five thalassaemic children receiving desferrioxamine and attending the day-care centre of a tertiary care hospital in Delhi, India, and 25 healthy age-matched controls were examined to determine the prevalence and pattern of ocular abnormalities. A refraction test, the visual evoked response and fluorescein angiography were done where applicable. Ocular changes were correlated with serum ferritin levels, the dosage and duration of chelation with desferrioxamine, and pre-transfusion haemoglobin levels. Results. None of the children reported any visual symptoms. The prevalence of ocular abnormalities in the thalassaemic group was 36% (9/25). Ocular changes seen included cataract (5/25), blurred optic disc margins (6/25) and dilatation and tortuosity of retinal vessels (2/25). The thalassaemic children had a significantly higher prevalence of cataract than the controls (p<0.05). Prevalence of cataract was associated with serum ferritin values above 4500 ng/ml (p<0.05), and blurring of disc margins was significantly associated with increased duration ((5 years) and frequency ((5 times/week) of desferrioxamine administration. A positive correlation was seen between the incidence of cataract and blurred disc margins. Conclusions. Children with thalassaemia should be screened periodically for ocular abnormalities. Rational usage of desferrioxamine and use of newer chelating agents will reduce the prevalence of these abnormalities.
Plasma fibrinogen levels in stroke.
Mistry P,Chawla K,Rai H,Jaiswal P
Journal of Postgraduate Medicine , 1990,
Abstract: Plasma fibrinogen levels were estimated in 56 patients of stroke, admitted in the hospital within 24 hours of symptoms. The levels were found to be raised significantly (531.73 +/- 74 mg%) compared to those of the age and sex matched control group (445.78 +/- 92.28 mg%). When the levels in stroke group with one risk factor were compared to those of individuals with comparable control group with same risk factor, a significant difference was observed in hypertensive, smokers, alcoholics and atherosclerotic stroke groups, which indicates that the observed rise is related to phenomenon of stroke rather than the associated risk factors. However, the rise observed in hypertensive stroke group (554.26 +/- 47.08 mg%) is significantly more (p. less than 0.01) than that occurring for nonhypertensive stroke group (497.82 +/- 93.12 mg%) indicating that the presence of hypertension does contribute to the rise.
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