Spectrophotometric Determination of Iron(II) and Cobalt(II) by Direct, Derivative, and Simultaneous Methods Using 2-Hydroxy-1-Naphthaldehyde-p-Hydroxybenzoichydrazone

Optimized and validated spectrophotometric methods have been proposed for the determination of iron and cobalt individually and simultaneously. 2-hydroxy-1-naphthaldehyde-p-hydroxybenzoichydrazone (HNAHBH) reacts with iron(II) and cobalt(II) to form reddish-brown and yellow-coloured [Fe(II)-HNAHBH] and [Co(II)-HNAHBH] complexes, respectively. The maximum absorbance of these complexes was found at 405 nm and 425 nm, respectively. For [Fe(II)-HNAHBH], Beer's law is obeyed over the concentration range of 0.055–1.373 μg mL−1 with a detection limit of 0.095 μg mL−1 and molar absorptivity ɛ, 5.6 × 104 L mol−1 cm−1. [Co(II)-HNAHBH] complex obeys Beer's law in 0.118–3.534 μg mL−1 range with a detection limit of 0.04 μg mL−1 and molar absorptivity, ɛ of 2.3 × 104 L mol−1 cm−1. Highly sensitive and selective first-, second- and third-order derivative methods are described for the determination of iron and cobalt. A simultaneous second-order derivative spectrophotometric method is proposed for the determination of these metals. All the proposed methods are successfully employed in the analysis of various biological, water, and alloy samples for the determination of iron and cobalt content

FEMALE FOETICIDE: A SEVERE CHALLENGE FOR THE SOCIETY IN CHITRA BANERJEE DIVAKARUNI’S THE ULTRA SOUND

Female foeticide is a severe blow to humanity. It is the most disgraceful anddeplorable act on the part of human beings who are considered to be the superior creatures ofGod responsible to create conducive conditions for the existence and survival of their fellows.It has widespread repercussions on humans and society as well. Women have been thesubject of deprivation, discrimination, intimidation, and unjust treatment in societythroughout history. The modern and sophisticated but heinous assault on women is not toallow them to come into existence. It is none other than female foeticide. It is the eliminationof the female foetus in the womb

Effectiveness of amla juice with elemental iron among adolescent girls on iron deficiency anaemia in govt. Manohara school at Sellur, Madurai

Title : Effectiveness Of Amla Juice With Elemental Iron Among Adolescent Girls On Iron Deficiency Anaemia In Govt. Manohara School At Sellur, Madurai. Objectives : To assess the level of iron deficiency anemia among adolescent girls; To evaluate the effectiveness of amla juice with elemental iron among adolescent girls on iron deficiency anemia; To find out the association between the level of iron deficiency anaemia among adolescent girls with their selected socio demographic variables. Hypotheses : There is a significant difference between pre and post test level of iron deficiency anaemia among adolescent girls ; There is a significant association between the level of iron deficiency anaemia among adolescent girls with their selected socio demographic variables. Methodology: The conceptual framework was based on Wiedenbach’s Helping art in clinical theory. Pre experimental one group pre-test - post test design was used & 40 subjects were selected by purposive sampling. The study was conducted at Government Manohara School at Sellur, Madurai. After obtaining an informed consent from their parents, Pre test was done by using self administered questionnaire and anaemia symptoms were assessed with observation check list and estimation of haemoglobin by cell count method in the clinical laboratory before and after intervention. Results : The mean pre test mean score was increased from 9.35 to 10.11. the ‘t’ value 6.05 was much higher than the table value at 0.001( pre set level of significance was 0.05). Conclusion: The study concluded that amla juice with elemental iron was effective on increasing the haemoglobin level among adolescents girls

EXPERIMENTAL INVESTIGATION ON RICH MINERAL SILICA AND COCONUT SHELL IN CONCRETE

Concrete plays a vital role in the design and construction of the nation’s infrastructure. Almost three quarters of the volume of concrete is composed of aggregates. The current studies involved in the replacement of fine aggregate with Ecosand. In this study an attempt is made to use Ecosand which is a commercial by-product of cement manufacturing process introduced by ACC Cements, as fine aggregate replacement and crushed coconut shell as coarse aggregate. M20 grade of concrete is used. Different percentage addition of replacement materials are prepared for conducting the test. The strength characteristic in concrete with replacement of eco sand and crushed coconut shell was studied in detail. Rich mineral silica (Ecosand) being waste material generated from manufacture of cement from industry. It can be used to increases efficiency in concrete. Experimental results are also shows that the compressive strength, splitting tensile strength and structural behavior of concrete of rich mineral silica (Ecosand) and natural sand such that the combination of two aggregate can be increased efficiency in concrete. The project paper aims at analyzing the physical and mechanical properties of concrete. The main objective is to encourage the use of these ‘seemingly’ waste products as construction materials in low-cost housing

Synthesis and Characterization of silver nanoparticles using Lablab purpureus flowers (Purple colour) and its anti-microbial activities

In recent years, green Bio-synthesis of silver nanoparticles (AgNPs) has gained much interest from chemists and researchers. In this concern, Indian flora has yet to divulge innumerable sources of cost-effective, non –hazardous, reducing and stabilizing compounds utilized in preparing AgNPs. This study investigates an effective and sustainable route of AgNP preparation from 1 mM aqueous AgNO3 using extracts of Lablab purpureus flowers (purple colour) which are well adorned for their wide availability and medicinal property. The AgNPs were characterized by UV-visible (vis) spectrophotometer, Scanning electron microscopy (SEM), Fourier transform infrared spectrometer (FTIR) analysis, and XRD. The AgNPs obtained from extracts significantly higher antimicrobial activities against staphylococcus aureus and E.Coli.in comparison to both AgNO3 and raw plant extracts. In totality, the AgNPs prepared are safe to be discharged in the environment and possibly utilized in process of pollution remediation. AgNPs may also be efficiently utilized in green research to obtain better health using crop plants as shown by our study. &nbsp

Bio synthesis, Characterization of ZnO Nanoparticles from Scoparia dulcis L. plant extract and its in-vitro Antioxidant, Acetylcholinesterase Activity

The current investigation is focused on the use of green synthesis methods for zinc oxide nanoparticles (ZnO NPs) from Scoparia dulcis L. extract (SDE). SDE-mediated ZnO NPs (SDE-ZnO-NPs) were made using a simple and eco-friendly method that required little reaction time and calcinations temperature. UV-Vis, FTIR, X-ray powder diffraction, SEM, TEM & EDAX were used into characterizes the skeletal and synthetic properties concerning biosynthesized ZnO nonmaterial. The UV–Visible spectroscopy absorption peak for SDE-ZnO-NPs was found to be at 380 nm, confirming the production of ZnO NPs. The FTIR spectrum also revealed bioactive functional groups as well as metal-oxygen groups. Synthesized ZnO NPs had a rod shape in 200 nm, according to TEM examination. The Zn and O in the produced ZnO NPs were approved by the EDAX analysis. The XRD results revealed that it had a crystal structure that was similar to SDE-ZnO-NPs. The dose-related Acetylcholinesterase inhibitory action of SDE-ZnO NPs was determined utilizing the Ellman’s test. AChE activity of the synthesized nanoparticles showed potential inhibitory activity with IC50 values of 75.34 µg/mL. The antioxidant activity was investigated the biosynthesized ZnO-NPs using DPPH, ABTS assay

Weathered High Density Polyethylene Microplastics Induce Proximate Imbalance in the Post Larval Stages of Litopenaeus vannamei

Introduction: The fast rise in anthropogenic activity, particularly in the aquatic ecosystem, has resulted in microplastic contamination in recent years. A wide range of harsh environmental circumstances can cause stress to aquatic organisms. Aim of the Works: This study aims to better understand the changes in proximate constituents that occur in the post larval stage on long term exposure by using a wide range of biomarkers to identify distinct and individual patterns of Litopenaeus vannamei responses to high density polyethylene microplastics. Methodology: The post larval stage of Litopenaeus vannamei were exposed to wHDPE-MP for 45 days in order to evaluate changes in proximate constituents such as crude protein, fibre, amino acids ash and moisture contents were measured during the period of exposure. Similar measurements were made following a 15-day recovery interval to track any changes that might take place during depuration periods. Results: The proximate constituents including crude protein, fats, fibre and ash contents decreased significantly following exposure of L. vannamei to 0.2 mg/L of wHDPE-MP for 45 days. These values during depuration demonstrated notable variations from the corresponding control group and did not indicate any recovery from the microplastic-induced stress. Conclusions: The current study found a significant correlation between stress and alterations in the proximate constituents. Post larval stages exposed to wHDPE-MP had changes in the growth pattern and proximate constituents. Overall, the results indicate to post larval stages as the most vulnerable to wHDPE-MP, which will have an impact on white prawn growth and have repercussions for the aquaculture sector

PHYSICAL PROPERTIES OF SPRAY PYROLYTICALLY Li DOPED PbS THIN FILMS

Lithium (Li) doped Lead sulfide (PbS) thin films were prepared by a home built spray pyrolysis method. The starting precursor solution containing of Lead acetate, Thiourea and Lithium were sprayed on to the glass substrate at 493K. The concentration of Lithium in the precursor solution of Lead Sulphide was varied from 0.001M to 0.003M. The resultant films were characterized by XRD, SEM and UV-visible spectroscopy. The structural properties of as deposited films were characterized by X-ray diffraction. XRD patterns indicated the presence of multi-phase cubic PbS with preferential orientation alon