111 research outputs found

    Study on Airborne Pollen in the Atmosphere of Bangalore City

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    The atmospheric pollen of Jnana Bharathi campus, Bangalore University was surveyed during one year period from January 2011 to December 2011 using a vertical cylinder trap. A total of 28 pollen types were identified, among which 7 were present throughout the year. These belonged to Poaceae, Tridax sp., Eucalyptus sp., Parthenium hysterophorus, Cocus nucifera, Croton sparsiflorus and Mimosa pudica. The most predominant Pollen was Parthenium hysterophorus (23.87%) followed by Poaceae (16.19%), Mimosa Pudica (11.31%), Delonix regia (8.77%) and Eucalyptus spp. (7.58%) were found in the atmosphere of Bangalore city. Maximum pollen concentration was observed in the month of May (880/m3) followed by April (552/m3) and minimum in June (163/m3). The total pollens as well as individual pollen types displayed distinct seasonal periodicity in their incidence. The present study will provide preliminary but useful data to the allergologists for effective diagnosis and treatment of local population suffering from pollen hypersensitivity

    Structural investigation, spectroscopic and energy level studies of Schiff base: 2-(3�-N-salicylidenephenyl)benzimidazole using experimental and DFT methods

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    The Schiff base 2-(3�-N-salicylidenephenyl)benzimidazole (Spbzl) was characterized by FT-Raman, 1H NMR, 13C NMR and single crystal X-ray diffraction technique. Crystallographic studies reveal the presence of two water molecules in the asymmetry unit which aid the intermolecular hydrogen bonding with imidazole ring, and the trans-conformation of the azomethine bond. Theoretical computations conducted using density functional theory (DFT) analysis support the experimental facts. Energy levels estimated by DFT studies are in good agreement with the values obtained from cyclic voltammetry technique. Frontier molecular orbital analysis shows that charge transfer has taken place from donor to acceptor moiety, which is also supported by the high hyperpolarizability values in both gaseous and solution phases, indicating high charge transfer capability of the molecule. A comparative theoretical study of Spbzl with derivative 4-((3-(1H-benzimidazol-2-yl)phenylimino)methyl)-3-hydroxybenzoic acid (Pbzlb) having an added anchor group COOH substituted at para position in the acceptor ring has been made. The result shows the feasibility of charge transfer to the semiconductor surface in dye sensitized solar cell (DSSC) applications for Pbzlb. © 2017 Elsevier B.V

    NUTRIENT UPTAKE AND CHEMICAL PROPERTIES OF SOIL AFTER HARVEST OF BABY CORN (Zea mays L.) AS INFLUENCED BY ORGANIC MANURES AND FERTILIZERS

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    An experiment was conducted during Kharif season, to study the effect of combination of different source and dosage of organic manures with fertilizers on nutrients uptake, available nutrients and chemical properties of soil after harvest of baby corn and its effect on yield of baby corn. Results revealed that, application of recommended dose of fertilizer along with FYM (150:75:40 kg N: P 2 O 5 :K 2 O ha -1 ) + 10 t FYM recorded significantly higher uptake of nitrogen, phosphorus and potassium (204.24, 35.23 and 213.6 kg/ha, respectively than applying only recommended dose of fertilizer. In same way, application of 100% N through different sources of organic manures, application of FYM + balance P and K through fertilizer significantly recorded next higher available nitrogen, phosphorus and potassium (233.5, 33.0 and 226.8 kg/ha, respectively) compared to other combinations of organic manure treatments. The same trend was noted with respect to yield. Highest baby corn yield (17.67q ha -1 ) and green fodder yield (36.53 t ha -1 ) was recorded in treatment where application of organic manure through FYM in combination of recommended dose of fertilizer (150:75:40 kg N: P 2 O 5 :K 2 O ha -1 ) + 10 t FYM was applied. Organic carbon content of soil was improved where organic manures along with fertilizers were applied

    Enrich Ayurveda knowledge using machine learning techniques

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    813-820In India, every region, urban or rural the whole population is dependent on plants for life sustenance in the form of food, shelter, clothes and medicines. Due to inflation, synthetic medicines have become less affordable and their side effect has led in seeking alternative medication system. Indian medicinal herbs and its uses are good alternates for curing many common ailments and diseases. Using computer vision and machine learning techniques, the Indian medicinal herbs can be classified based on their leaves and thus promote the Indian traditional system – Ayurveda to a great extent. In this paper, a systematic approach consisting of Scale Invariant Feature Transform (SIFT) which is uniform in nature to scale, illumination and rotation is combined with different classifiers. Different models are built using SIFT as the common feature extractor in combination with Support Vector Machine (SVM), K-Nearest Neighbor (kNN) and Naive Bayes Classifier. Finally, the proposed method consists of SIFT features with dimension reduction using Bag of Visual Words and classified by SVM. The work is carried over in comparison with newly built herb dataset and Flavia dataset. The model shows an accuracy of 94% with newly built dataset which consists of six Indian medicinal herbs

    N-4-{Acetyl}-5-(4-fluorophenyl)-4,5-dihydro-1,3,4-thiadiazol-2-ylacetamide

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    The title molecule, C12H12FN3O2S, shows a short intramolecular SO contact of 2.682 (18) A˚ . The dihedral angle between the thiadiazole ring and the benzene ring is 86.82 (11). In the crystal, N—HO and C—HO hydrogen bonds generate an R2 1 (6) graph-set motif between adjacent molecules. Pairs of futher C—HO hydrogen bonds form inversion dimers with R2 2 (8) ring motifs. These combine to generate a three-dimensional network and stack the molecules along the b axis

    The presence of Helicobacter pylori in oral cavities of patients with leukoplakia and oral lichen planus

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    ABSTRACT Objective Helicobacter pylori infection is one of the most common bacterial infections in men. This gastrointestinal pathogen is closely related to gastritis, peptic ulcers, and the increased risk of gastric cancer. Numerous studies have indicated oral cavities as possible Helicobacter pylori reservoirs. Helicobacter pylori has been detected both in supragingival and subgingival plaques, and also in saliva. In addition, the relationship between lesions of oral mucosa and the presence of H. pylori has been evaluated and described in some studies. The aim of this study was to assess the presence of Helicobacter pylori DNA in the oral cavity of patients with oral leukoplakia and oral lichen planus. Material and Methods The study included 54 patients with oral leukoplakia, 72 with oral lichen planus lesions, and 40 healthy controls. The presence of Helicobacter pylori in oral cavity samples was analyzed using a single-step Polymerase Chain Reaction (PCR) method. All patients underwent a periodontal examination and the following clinical parameters were collected: pocket depth, bleeding, and plaque indexes. The periodontal status was assessed using the Offenbacher classification. Results In most patients, pathological lesions were in typical sites on the buccal mucosa (leukoplakia in 88%, and oral lichen planus in 93% of patients). The DNA of the Helicobacter pylori was present in 20% of patients with leukoplakia and 23% of patients with lichen planus. We did not find the DNA of H. pylori in healthy controls. The periodontal status described by periodontal indices was worse in the investigated group than in the control group. Conclusion These findings suggest that the H. pylori presence in oral cavities may be related with leukoplakia and lichen planus oral lesions
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