Pollen Germination in vitro

Pollen germination in vitro is a reliable method to test the pollen viability. It also addresses many basic questions in sexual reproduction and particularly useful in wide hybridization. Many pollen germination medium ranging from simple sugars to complex one having vitamins, growth regulators, etc. in addition to various minerals have been standardized to germinate pollen artificially. The different media, successful pollen germination methods, procedures from pollen germination studies with wheat, rye, brinjal, pigeonpea and its wild relatives are discussed

ONLINE INFORMATION SEEKING BEHAVIOUR OF FACULTY MEMBERS WORKING IN ARTS AND SCIENCE COLLEGES IN MADURAI DISTRICT: A STUDY

The present study has been undertaken to assess the online information seeking behaviour of the faculty members of Arts and Science colleges in Madurai district. A sample of 50 faculties was selected by random sampling method. The well structured questionnaire was distributed among the faculty members to collect data on the availability of online information services, the major information services used, the purpose of online information seeking and the level of satisfaction. The findings of the study reveal that: Most of the respondents (56%) are male faculty members. Majority of the respondents (32%) visit the library once a week. The majority of the respondents (37%) access information at the college library. Majority of the respondents (43%) need/use online information for their career development. (42%) of the respondents are satisfied with the online sources available in the library. Most of the respondents (33%) use Wikipedia. Majority of the respondents (63%) use search engines to look for information. Majority of the respondents (30%) complained about Lack of time as their major problem in accessing online resources

Seasonal Distribution of Diarrhea among Children aged 1-5 Years in Slums of Southern India: A Cross-Sectional Door to Door Survey

INTRODUCTION: Diarrhea, a water borne disease is very prevalent in children under 5 years of age and lead to serious consequences among them if not treated on time. AIM: To assess the Seasonal Distribution of diarrhea among children aged 1-5 years in slums of southern IndiaMATERIALS AND METHOD: The study was a planned door to door survey via a standard, pre-validated and pre-tested questionnaire among the slums the states of Maharashtra, Karnataka, Tamil Nadu and Kerala. Data was collected from the mothers/caretakers of children aged 1-5 years regarding Diarrheal episodes in the past one year. Data was analysed using SPSS version 22.0 and by applying the independent samples t-test as well as the multivariate logistic regression. RESULTS: A total of 2684 children were reported having diarrhea, out of which there were slightly more females (52.1%) as compared to males (47.9%). 55.1% of children were treated at home, while 34.2% needed consultation and 10.7% required hospitalization. Most cases were reported in the monsoon season (39.3%), followed by summer (30.6%), winter(22.5%) and autumn (7.6%). The independent samples t-test (p=0.03) as well as the multivariate logistic regression (p=0.01) showed significant results while comparing the occurrence of diarrhea in monsoon seasons in comparison to other seasons.CONCLUSION: Further studies are advised among slum dwellers so that proper and tailor made programs can be directed in reducing the effect of diarrhea in children residing in slums in southern India

Adaline-based control of capacitor supported DVR for distribution system

In this paper, a new control algorithm for the dynamic voltage restorer (DVR) is proposed to regulate the load terminal voltage during various power quality problems that include sag, swell, harmonics and unbalance in the voltage at the point of common coupling (PCC). The proposed control strategy is an Adaline (Adaptive linear element) Artificial Neural Network (ANN) and is used to control a capacitor supported DVR for power quality improvement. A capacitor supported DVR does not need any active power during steady state because the voltage injected is in quadrature with the feeder current. The control of the DVR is implemented through derived reference load terminal voltages. The proposed control strategy is validated through extensive simulation studies using the MATLAB software with its Simulink and SimPower System (SPS) toolboxes. The DVR is found suitable to support its dc bus voltage through the control under various disturbances

Growth, Laser Raman, Thermal, Edax and Photoluminescence Studies of Pure and Calcium Doped Zinc Hydrogen Phosphate Crystals Using Single Diffusion Technique

Growth aspects of pure and Calcium doped Zinc hydrogen phosphate single crystals from silica gel by the process of single diffusion technique are discussed. Crystals with different morphologies and effect on various parameters like gel pH, and gel ageing, gel density and concentration of reactants on the growth of pure and Calcium doped ZnHPO4 crystals were studied. Laser Raman spectra of the pure and Calcium doped ZnHPO4 crystals are recorded and the vibrational assignments have been made with possible explanations. Thermo gravimetrical analysis is undertaken to study the thermal stability of the grown crystals. The photoluminescence measurement shows that the material is suitable for photonic devices. The crystals grown were characterized by Laser Raman spectrum, TG/DTA, EDAX and Photoluminescence

USE AND IMPACT OF E-RESOURCES AMONG THE FACULTY MEMBERS AND STUDENTS AT SALEM COLLEGE OF ENGINEERING AND TECHNOLOGY FOR WOMEN, SALEM, TAMILNADU, INDIA: A STUDY

This study aims at analyzing the use and impact of e-resources among the faculty members and students at Salem college of engineering and Technology for women, in Salem. A sample of 100 questionnaires was distributed to the faculty members on first come first get basis. In the same way, 150 questionnaires were given to the students was selected by random sampling method. The well structured questionnaire was distributed among the faculty and student to collect data on the availability of use of e-resources. The findings of the study (41 %) faculty members use Internet twice a week and (13%) faculty members browse Internet daily. (37%) student respondents surf Internet once a week, just (13%) student respondents use Internet once a month. around (50 %) of the respondents use Internet at least once a week.(39 %) of faculty members and (48 %) of students are highly satisfied with the availability and use of e-resources in the college library. While (50 %) of the faculties and (28%) of the students are satisfied, (11%) of the faculty members and (24 %) of the students are not satisfied with the availability and use of e-resources in the college library. Thus, majority of the faculty members and students are happy with the e-resources available in the college library

Nesting Pattern Preferences of Stingless Bee, Trigona Iridipennis Smith (Hymenoptera: Apidae) in Jnanabharathi Campus, Karnataka, India

The patterning aspects of nests are receiving increased attention in nature, so we have studied it in human-dwelling environments involving repeated spatio-temporal mold of pattern. Different criteria such as nesting sites, orientations, nest characters, longevity and elevation of nests have been selected to check the level of preferences exhibited by an indigenous resident species of stingless bee, Trigona iridipennis Smith at the Jnanabharathi campus in the southern part of Bangalore (Karnataka). Nesting patterns gave a precise measurement of preference level exhibited by testing different paradigms. The deciduous, shrub type of vegetation helped for successful dominance in higher number of nests to thrive well, which in turn helped to look at the varying patterns of nests. Observations on different nests revealed: i. preference for the habitats made of walls, ii. north facing direction for nest opening, iii. different type of nests with oval-shaped opening and medium-sized exposure outside, iv. nests with more accumulation of mud, resin and wax deposits and v. bees preferring middle elevation range of 11-15 feet for nest-building purely depending on the safer strategies such as availability of flora, protection from predators for better and safe survival at the nesting sites