Role of Librarian in Internet and World Wide Web Environment

The transition of traditional library collections to digital or virtual collections presented the librarian with new opportunities. The Internet, Web environment and associated sophisticated tools have given the librarian a new dynamic role to play and serve the new information based society in better ways than hitherto. Because of the powerful features of Web i.e. distributed, heterogeneous, collaborative, multimedia, multi-protocol, hypermedia- oriented architecture, World Wide Web has revolutionized the way people access information, and has opened up new possibilities in areas such as digital libraries, virtual libraries, scientific information retrieval and dissemination. Not only the world is becoming interconnected, but also the use of Internet and Web has changed the fundamental roles, paradigms, and organizational culture of libraries and librarians as well. The article describes the limitless scope of Internet and Web, the existence of the librarian in the changing environment, parallelism between information science and information technology, librarians and intelligent agents, working of intelligent agents, strengths, weaknesses, threats and opportunities involved in the relationship between librarians and the Web. The role of librarian in Internet and Web environment especially as intermediary, facilitator, end-user trainer, Web site builder, researcher, interface designer, knowledge manager and sifter of information resources is also described

Hearty miR-363 controls HAND1 in cardiac cell specification

MicroRNAs regulate target gene expression post-transcriptionally in a myriad of cell types and play critical roles in diverse physiological and pathological processes, including cardiomyocyte development, differentiation, and regeneration. The recent publication in Stem Cell Research and Therapy by Wagh and colleagues reports a novel regulatory role for miR-363 in cardiomyocyte specification. By employing microRNA expression profiling and functional knockdown studies on human embryonic stem cell-derived cardiomyocytes, the authors identified miR-363 as an upstream negative regulator of left ventricular specification transcription factor HAND1

Determinants of range of motion in cruciate retaining total knee arthroplasty: a prospective study

Background: Total knee replacement (TKR) is to provide a stable painless knee with adequate range of motion (ROM) for daily activities. The aim of the study is to evaluate various factors that influence ROM in cruciate retaining TKR postoperatively.Methods: Fourty four patients with osteoarthritis knee treated in our institute with TKR using cruciate retaining prosthesis are included in study and analysed prospectively. Mean follow up was 6 months. Patients are analyzed for following factors–age, gender, BMI, preoperative ROM, changes in posterior femoral condylar offset, posterior tibial slope after surgery. Statistical analysis of effect of all factors on knee ROM was done. Assessment was done preoperatively and 3 and 6 months postoperatively.Results: Gender did not affect the final ROM. Mean age of patients is 65. Age has negative correlation with ROM (p=-0.45). The mean knee range improved from 92˚ to 101˚. Factors that negatively affect ROM include, BMI (p=-0.04) and Preoperative flexion deformity (p=-0.03). Factors that positively affect ROM include, knee scores and good preoperative flexion (p=0.001). Males have good amount of flexion preoperatively and post operatively when compared to females.Conclusions: Preoperative ROM, flexion contracture and BMI are the important factors affecting the range of motion in total knee arthroplasty. Proper counselling of patient preoperatively regarding these various factors and appropriate selection of patient is of utmost important for satisfactory functional outcome

Prediction of Weld Quality in Plasma Arc Welding using Statistical Approach

The effect of various process parameters like welding current, torch height and welding speed on front melting width, back melting width and weld reinforcement of Plasma Arc Welding on Aluminum alloy is investigated by using standard statistical tool i.e., Response Surface Method . Variable Polarity Plasma Arc Welding is used for welding Aluminum alloy. Trail experiments are conducted and the limits of the input process parameters are decided. Two levels and three input process parameters are chosen and experiments are conducted as per design matrix. The coefficients are calculated by using regression analysis and the mathematical model is constructed. Analysis of Variance (ANOVA) is carried out to check the adequacy of the developed model. Fisher’s test is conducted for standard tabulated values of F-ratio for a desired level of confidence (say 95%) and found that all the Fisher ratio values calculated for the input process parameters are within the table values and found to be adequate. By using the mathematical model the main and interaction effect of various process parameters on weld quality are studie

Analysis of Metallised Propellant Ignition Process under Conductive Heating

Ignition of a composite aluminised propellant (AP-HTPB-Al) in stagnant hot air is analysed theoretically, based on solid phase and gas phase theories. According to solid phase theory, ignition is due to reaction of the propellant in the solid phase at elevated temperatures. One-dimensional transient solid phase energy equation is solved to obtain the surface temperature profile of the propellant. By gas phase theory, an exothermic gas phase reaction, adjacent to the propellant surface, is considered responsible for the ignition. The changes in temperature and concentrations in the gas phase and the temperature profile below the propellant surface during the pre-ignition induction period are considered. Equations of energy and concentrations of reactants have been solved to obtain the species concentration and temperature profiles in the gas phase. An experimental investigation of the ignition of AP-HTPB-Al propellant is also carried out in a shock tube under end-mount conditions. Pressure and temperature ranges were 6-16 bar and 1500-3000 K, respectively. A comparison of the experimental data with predicted results shows that the ignition in an oxidizing atmosphere is by gas phase reaction, whereas in an inert atmosphere, solid phase reaction may be predominant

Sea erosion along the Andhra Pradesh coast

Andhra Pradesh with a coastline of around 974 km has frequently been affected by cyclones and inundated by storm surges. Sea erosion is noticed at Visakhapatnam, Bhimunipatnam and in the East and West Godavari districts. Vishakhapatnam coast is facing erosion since long specially at Ramakrishna Beach. In 2013 and 2014, the cyclones ‘Phailin’ and ‘Hudhud’ further hastened erosion of the Ramakrishna Beach, severely damaging the adjacent protection wall and road. Uppada village which is 22 kilometres away from Kakinada also faces severe erosion. The Kakinada-Uppada road is gradually disappearing due to shoreline erosion

Crafts and gear used for marine fishing along the Andhra Pradesh coast

Until the middle of nineteen sixties fishing for marine finfishes and shellfishes along the Andhra Pradesh coast used to be carried out employing indigenous non-mechanised crafts. Subsequently trawlers and later mechanised vessels operating gillnets came into use which resulted in the increased fish production. Use of outboard engine on indigenous crafts for reaching fishing grounds is a recent feature of near the coast fishing. The different kinds of non-mechanised and mechanised crafts and gear employed in the region are dealt with in this article

A QUERY ON PUBMED RESULTS USING HIERARCHIES

ABSTRACT: A natural way to organize biomedical citations is according to their MeSH annotations. MeSH is a comprehensive concept hierarchy used by PubMed. In this paper, we present the BioNav system, a novel search interface that enables the user to navigate large number of query results by organizing them using the MeSH concept hierarchy. First, the query results are organized into a navigation tree. At each node expansion step, BioNav reveals only a small subset of the concept nodes, selected such that the expected user navigation cost is minimized. In contrast, previous works expand the hierarchy in a predefined static manner, without navigation cost modeling. INTRODUCTION

Influence of Exogenous Glycinebetaine on Hot Pepper under Water Stress

A study was conducted to evaluate the effect of exogenous application of glycinebetaine (GB) on physiological response in hot-pepper (Capsicum annuum L. vs. Arka Lohit and Pusa Jwala) under water stress. Glycinebetaine was applied to seeds as well as plants through foliar applications. Water stress affected considerably the morphophysiological parameters in both the cultivars. However, in glycinebetaine (GB) treated plants, plant height, leaf area (LA), flower and fruit number and total dry matter (TDM) were greater compared to the untreated stress plants (T4) under water stress. Glycinebetaine application enhanced the photosynthesis (PN) in water deficit experiencing plants, mostly due to a greater stomatal conductance (gs) and carboxylation efficiency of CO2 assimilation. In both the cultivars after 12 day of stress, the PN decreased from 10.1 to 1.0-1.3 μ mol m-2 s-1 in untreated stressed plants (T4), while in the treated stressed plants PNhad reduced to 2.0 - 3.0 μ mol m-2 s-1 (T1 - T3). The application of GB increased the WUE in both the cultivars. The better WUE in treated plants of hot-pepper under stress was attributed to the improved PN. The higher per plant yield in the GB applied plants under stress in both the cultivars associated with higher PNrate, gs and WUE in treated plants. Though there was an increase in PN rate, WUE and plant yield in the treated plants (T1 - T3), the better results were found in the plants (T2) where seeds were treated and foliar application was given at the time of imposing stress