In vitro free radical scavenging activity of different extracts of Adansonia digitata L.

The species Adanasonia digitata L. (Bombacaceae) is a multipurpose tree with enormous range of medicinal and economic importance. The objective of the current study was to investigate the free radical scavenging potential of A. digitata. The methanol extracts of different parts i.e., leaf, seed, bark, fruit wall and floral extracts of A. digitata were screened for antioxidant activity using DPPH assay. Results from this study showed that the maximum and minimum percentage of free radical scavenging activity was exhibited by methanol extracts of seed and fruit wall (27.69 & 20) as measured by using DPPH assay. These results showed the antioxidant potential of this medicinal plant to make use in the preparation of drugs with free radical scavenging activity

Bright blue emissions on UV-excitation of LaBO3 (B=In, Ga, Al) perovskite structured phosphors for commercial solid-state lighting applications

Bright blue photoluminescence (PL) was obtained from Bi3+-activated LaBO3 (B = In, Ga, Al) perovskite nanophosphors. A cost-effective and low-temperature chemical route was employed for preparing Bi3+ doped LaBO3 (B=In, Ga, Al) which were then annealed at 1000 °C. The phase formation, morphological studies and luminescent properties of the as-prepared samples were performed by X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence and optical absorption spectroscopy. Comparison of emission intensities, lifetime studies, energy band gaps and color purity of all samples (pure and Bi3+ doped) were investigated for promising applications in UV light-emitting diodes, variable frequency drive (VFD), field emission display (FED), and other photoelectric fields

Preliminary phytochemical screening from leaf and seed extracts of Senna alata L. Roxb-an Ethnomedicinalplant

ABSTRACT: Aim: The bioactive compounds present in the plant are responsible for the medicinal properties of the plant. The present investigation is aimed in screening the bioactive compounds present in the seed and fresh, dry leaves of S.alata -an important ethnomedicinal plant. The objectives of the work includes i) the screening of various bioactive compounds present in the seed, fresh and dry leaves of S.alata. ii) To identify the bio active compounds present in the fresh leaf extracts by Thin layer chromatography. Methodology: Qualitative analysis for the presence of phytochemicals was performed using methanol, chloroform, petroleum ether and aqueous extracts of seed and both fresh and dry leaves of Senna alata by various standard techniques availabl

Preliminary characterization of a Moroccan honey with a predominance of Bupleurum spinosum pollen

Honey with Bupleurum spinosum (zandaz) as a main pollen source has not been the subject of previous detailed study. Therefore, twelve Moroccan samples of this honey were subjected to melissopalynological, physicochemical and microbiological quality characterization, as well as antioxidant activity assessment. From a quality point of view, almost all samples were within the limits established by Codex Alimentarius, and/or the European legislation. All samples presented predominance of B. spinosum pollen (more than 48%). Relatively high levels of trehalose (1.3-4.0 g/100 g) and melezitose (1.5-2.8 g/100 g) were detected. Those sugars, not common in monofloral honeys, could be used as an important factor to discriminate zandaz honey. Flavonoid content correlated positively with the honey color, melanoidin and polyphenol content, and negatively with the IC50 values of scavenging ABTS (2,2' - azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) free radicals, while proline amount correlated negatively with IC50 values of nitric oxide scavenging activity and chelating power. This correlation supports the use of anti-oxidant activities as important variables for PCA (principal component analysis). Both components explained 70% from the given data, and showed certain homogeneity upon analyzed samples independent of the region, suggesting the importance of B. spinosum nectar in the resulting honey characteristics.Fundacao para a Ciencia e Tecnologia for Research Center [UID/BIM/04773/2013 CBMR 1334, UID/AGR/00239/2013, UID/BIA/04050/2013 (POCI-01-0145-FEDER-007569)]; ERDF through the COMPETE - Programa Operacional Competitividade e Internacionalizacao (POCI

Online) An Open Access

ABSTRACT A total of 68 samples were collected, out of which 31 (45.59%) were benign and 37 (54.41%) were malignant tumours. Tumours were classified into epithelial 40(58.83%), mesenchymal 20 (29.40%), round cell 5 (7.36%) and mixed tumours 3 (4.41%). The highest risk of development of various tumours was found in the age group of 7-9 years, followed by 4-6 years, above 9 years and below 3 years and the incidence was 29 (42.65%), 20(29.41%),19 (27.94%) and 1 (1.47% ) respectively. The frequency of occurrence of neoplasms was slightly higher in females 38(55.88%) compared to the males 30 (44.12%). Among the breeds affected Pomeranian breed represented more with 18 (26.50%) followed by non descriptive 16 (23.52%), German Shepherd 16 (23.52%), Labrador 6 (8.82%), Doberman 6 (1.47%), Dachshund and Rottweiler 2 (2.94%), each one of Collie and Great Dane (1.47%). The organ wise incidence of tumours included skin and mesenchymal tumours 29 (42.65%), mammary tumours 17 (25%), joint and bone tumours 9 (13.23%), vaginal tumours 5 (7.53%), testicular tumours 4 (5.88%), vulva and penis 3 (4.41%), ovarian tumours 2 (2.94%) and each one of transitional cell carcinoma and prostate carcinoma (1.47%)

Familial Crouzon syndrome

Crouzon syndrome is an autosomal dominant condition of the craniosynostotic syndromes without syndactyly and with various dentofacial anomalies. Craniosynostosis, maxillary hypoplasia, shallow orbits, ocular proptosis and hypertelorism are the characteristic features of Crouzon syndrome. This report describes the variable clinical features in affected individuals over two generations of a family with dentofacial deformities and review of literature

Classification Approaches on Relational Databases

Abstract Relational databases are the most popular repository for structured data, and are thus one of the richest sources of knowledge in the world. In a relational database, multiple relations are linked together via entity-relationship links. Classification is an important task in data mining and machine learning, which has been studied extensively because of its usefulness development of classification across multiple database relations, becomes important. Multi relational classification is the procedure of building a classifier based on information stored in multiple relations and making predictions with it. There are many popular approaches for finding patterns in data. This paper provides an insight into various classification methods including ILP (Inductive Logic Programming), Relational database, emerging patterns and associative approaches. Their characteristics and comparisons in detail have also been provided

Microwave-Synthesized NiO as a Highly Sensitive and Selective Room-Temperature NO2 Sensor

In this work, we report microwave-assisted deposition of NiO for application as room-temperature NO2 sensor. The synthesis conditions are varied to arrive at the optimum film for sensing NO2. The optimum NiO film shows response of 4991% at 3 ppm NO2 at room temperature with short response and recovery times of 30 s and 45 s, respectively. X-ray diffraction reveals the cubic structure of the NiO film with slightly preferred orientation and scanning electron microscopy shows high porosity in the film, both contributing to the enhanced sensing performance. The microwave-synthesized NiO shows an order of magnitude stronger response to NO2 (3 ppm) at room temperature operation than does optimized, DC-reactive-sputtered NiO operating at 175 degrees C. To the best of our knowledge, this is the first report on room temperature detection of NO2 by a microwave-synthesized NiO film. The detection limit of the NiO film is 200 ppb with good selectivity against interfering gases. The sensor demonstrates an ultra-low power consumption of 0.2 mu W, making it suitable for solar-powered pollution-monitoring. (C) The Author(s) 2018. Published by ECS