INVESTIGATION ON ENERGY BASED DATA GATHERING APPROACH FOR WSN

Wireless Sensor Networks plays a vital role in all emerging areas of Wireless Platforms like Interne of Things (IoT), WiFi, WiMAX etc. Sensor nodes are communicated with or without the presence of administrator. Data gathering is a major issue in WSN which influences the throughput, energy and data delivery. In previous research, there was not taken efforts to focus on balanced data gathering.  In this research, we propose Reliable Energy Efficient Data Gathering Approach (REEDGA) to balance data gathering and overhead. To achieve this, proposed work consists of three phases. In first phase, estimation of information gathering is implemented through stable paths. Stable paths are found based on link cost. In second phase, data gathering phase is initialized to save energy in the presence of mobile sensor nodes. Overhead is kept low while keeping round trip time of gathered data. From the analytical simulation using NS2, the proposed approach achieves better performance in terms of data delivery rate, data gathering rate, throughput, delay, link availability and control overhead

Studies on the Effect of Typha angustata (Reed) on the Removal of Sewage Water Pollutants

Rhizoremediation is the process in which exudates derived from the plant root stimulate the survival and activity of the soil bacteria and fungi, resulting in a more efficient degradation of water soluble pollutants in rhizosphere. The present study was carried out in the zone of naturally growing reed plants (reed zone) and zone not occupied by Typha angustata along the banks of a domestic sewage pool in one of the residential areas of Puducherry. The lower levels of biochemical oxygen demand(BOD) and total dissolved solids (TDS) and lower concentration  of heavy metals such as lead, manganese, zinc and copper and higher level of dissolved oxygen (DO) were  noticed in the Reed (Typha angustata) root zone compared to non reed root zone. Though all the six bacterial species under five types of bacterial populations and eight types of fungal populations were found in both the zones, the numbers of colonies were found to be more in reed zone than non reed root zone. This suggests that the rhizosphere of Typha angustata has a direct influence on the composition and density of soil microbial community. Exudates of Reed plant caused an increase in the metabolic activity of microbes of the rhizosphere and transformed the organic and inorganic pollutants into harmless compounds. It is concluded that Typha root zone with its myriad of microbes served as a bio-bed which has the potential to reduce the BOD and TDS levels of sewage water, decrease the concentration of heavy metals and increase dissolved oxygen in the water body

EBF1-deficient bone marrow stroma elicits persistent changes in HSC potential

Crosstalk between mesenchymal stromal cells (MSCs) and hematopoietic stem cells (HSCs) is essential for hematopoietic homeostasis and lineage output. Here, we investigate how transcriptional changes in bone marrow (BM) MSCs result in long-lasting effects on HSCs. Single-cell analysis of Cxcl12-abundant reticular (CAR) cells and PDGFRα+Sca1+ (PαS) cells revealed an extensive cellular heterogeneity but uniform expression of the transcription factor gene Ebf1. Conditional deletion of Ebf1 in these MSCs altered their cellular composition, chromatin structure and gene expression profiles, including the reduced expression of adhesion-related genes. Functionally, the stromal-specific Ebf1 inactivation results in impaired adhesion of HSCs, leading to reduced quiescence and diminished myeloid output. Most notably, HSCs residing in the Ebf1-deficient niche underwent changes in their cellular composition and chromatin structure that persist in serial transplantations. Thus, genetic alterations in the BM niche lead to long-term functional changes of HSCs

Action Sequencing Using Visual Permutations

Humans can easily reason about the sequence of high level actions needed to complete tasks, but it is particularly difficult to instil this ability in robots trained from relatively few examples. This work considers the task of neural action sequencing conditioned on a single reference visual state. This task is extremely challenging as it is not only subject to the significant combinatorial complexity that arises from large action sets, but also requires a model that can perform some form of symbol grounding, mapping high dimensional input data to actions, while reasoning about action relationships. This paper takes a permutation perspective and argues that action sequencing benefits from the ability to reason about both permutations and ordering concepts. Empirical analysis shows that neural models trained with latent permutations outperform standard neural architectures in constrained action sequencing tasks. Results also show that action sequencing using visual permutations is an effective mechanism to initialise and speed up traditional planning techniques and successfully scales to far greater action set sizes than models considered previously.Comment: This paper has been accepted for publication at IEEE RA-

RELATIONSHIP BETWEEN PERIODONTAL DISEASE AND ABO BLOOD GROUP PHENOTYPES-A CROSS SECTIONAL RETROSPECTIVE STUDY

Objective: Numerous epidemiological studies have been carried out to assess the association of ABO blood typing and systemic diseases. However, the research is still at the infancy stage with regards to the dental field. Periodontitis, being one of the most prevalent diseases in the oral cavity can be supposed to be influenced by the blood grouping pattern among patients. The present cross-sectional study was carried out to asses the relationship between periodontal disease status and the ABO blood group.Methods: In a retrospective study of 2014, patients who reported to Saveetha Dental College and Hospital and diagnosed with chronic periodontitis, both localized and generalized forms were included. Demographic data, diagnostic and the ABO blood grouping information were procured from the case records of 410 subjects and then analysed.Results: Among the 410 individuals, 245 were diagnosed with localized chronic periodontitis whereas 165 subjects had suffered from generalized chronic periodontitis. A high fraction of the localized periodontitis population (20.97%) was of the blood group ‘B.' Similarly(12.92%) of the generalized periodontitis cases belonged to either ‘B' or ‘O' blood groups. The least affected blood group was ‘AB.'Conclusion: This cross-sectional study shows a definite relation between blood typing and periodontal disease. Further studies are required in order to validate the usage of blood groups as risk predictors for periodontitis.Â

AN OBSERVATIONAL STUDY TO VALIDATE THE SYMPTOMATOLOGY AND TO EVOLVE THE DIAGNOSTIC METHODOLOGY OF SIRAKKAMBA VATHAM THROUGH SIDDHA DIAGNOSTIC TOOLS

Sirakamba vatham is a clinical entity described by Sage Yugi in his treatise Yugi Vaithiya Chinthamani- 800, as one among the 80 types of Vatha diseases described in Siddha system of medicine. The study was aimed at in depth analysis of the clinical features mentioned under Sirakamba vatham of Siddha literature and to evolve standard Siddha diagnostic methods for management for Sirakamba vatham. This study was an observational, single center study with the sample size of 26, divided into Group I (control group) having normal individuals and group II (cases with Sirakkamba vatham). At the end of the study, it was concluded, that the symptoms of Sirakkamba vatham closely resembled the symptoms of Cerebro Vascular Accident especially of posterior circulation stroke

Integrin β1 regulates marginal zone B cell differentiation and PI3K signaling

Marginal zone (MZ) B cells represent innate-like B cells that mediate a fast immune response. The adhesion of MZ B cells to the marginal sinus of the spleen is governed by integrins. Here, we address the question of whether β1-integrin has additional functions by analyzing Itgb1fl/flCD21Cre mice in which the β1-integrin gene is deleted in mature B cells. We find that integrin β1–deficient mice have a defect in the differentiation of MZ B cells and plasma cells. We show that integrin β1–deficient transitional B cells, representing the precursors of MZ B cells, have enhanced B cell receptor (BCR) signaling, altered PI3K and Ras/ERK pathways, and an enhanced interaction of integrin-linked kinase (ILK) with the adaptor protein Grb2. Moreover, the MZ B cell defect of integrin β1–deficient mice could, at least in part, be restored by a pharmacological inhibition of the PI3K pathway. Thus, β1-integrin has an unexpected function in the differentiation and function of MZ B cells