9 research outputs found
Air Traffic Control Pre-Landing and Post Landing Process (Climatology Analysis and Touch down Aviation)
No full textSEASONAL VARIATION IN SELECTED HEAVY METAL CONCENTRATIONS IN THE NANDALAR ESTUARY EAST COAST OF TAMIL NADU-INDIA
No full textEstuaries are dynamic environments with respect to metal speciation, as many of the physicochemical parameters that affect metal equilibria are subject to change as fresh and marine waters mix. pH, hardness, dissolved organic matter concentration, and ionic strength will all significantly affect the partitioning of copper within and between solid and solution phases. Heavy metals have been present in nature for many years, but their toxicity is increasing as a result of anthropogenic activities. There is an increase in heavy metal contamination in many inland waters as well as estuarine ecosystems nowadays. The aim of the present study is to evaluate seasonal variation in some selected heavy metal concentrations in the Nandalar estuary on the east coast of Tamil Nadu, India, during the 2020 to 2021 period. The monsoon season saw the highest appearance of followed the order of Cu (0.043mg/L) > Cr (0.027mg/L) > Zn (0.024mg/L) > Pb (0.023mg/L) > Ni (0.012mg/L) > Cd (0.007mg/L) > Hg (>0.00001mg/L) metals compared with the pre and post monsoon seasons, while present metals were higher than the Fisheries and aquatic life standard reference value. Overall, the metal of Cu (0.032 to 0.043 mg/L) was the higher concentration found to be in the Nandalar estuary. The seasonal variation analysis showed to higher content of copper was observed in Nandalar estuary, Tamil Nadu
Role of different chelating agent in synthesis of copper doped tin oxide (Cu-SnO2) nanoparticles
No full textPerformance enhancement of heterogeneous LTE networks using amplify and forward relaying with MRC combining
No full textEffect of onion and garlic peel mix fertilizer on growth and yield of lettuce (lactuca sativa)
Get PDFThe study was carried out at Agriculture research station, Seetha Eliya,
from February to May 2022 to find the effect of red onion peel and garlic peel fertilizer
mixture on the growth and yield performance of lettuce. The pot experiment was laid
out in a completely randomized design with nine treatment and four replicates. Powder
forms of onion and garlic peel fertilizer were used in the 1:1 weight ratio. Nine different
powder mixture; T1 (control) – only ½ recommended compost, T2 – ½ recommended
compost + 2g powder, T3- ½ recommended compost + 4g powder, T4 – ½
recommended compost + 6g powder, T5 – ½ recommended compost + 8g powder, T6
– only 2g powder, T7 – only 4g powder, T8 – only 6g powder, T9 – only 8g powder
were used. Powder form was applied as basal and after 1st and 3rd weeks from
transplanting. Plant growth parameters; leaf length, width, plant height, number of plant
and yield were measured. Data were analyzed in ANOVA one way method using
Minitab software. Among all nine treatments, T2 was showed significantly better fresh
weight (324.79±14.03) and number of leaves (24.00±1.00) than others. T3, T4, T5
were showed good growth and yield performance. Therefore, onion garlic peel fertilizer
improved lettuce yield. The use of organic onion garlic peel fertilizer mixture used as a
plant growth booster is inexpensive, environmentally safe, and low-cost technology to
improve the yields of small farmers
Performance Enhancement of LTE HetNet Using EVM-Based Constellation Combiner (ECC) in WARP
No full text
FORMULACIÓN DE UNA MEMBRANA POLIMÉRICA ELECTROHILADA PARA EL ESTUDIO DE ADSORCIÓN DE HIERRO Y CROMO EN AGUAS RESIDUALES PRODUCTO DE LA MINERÍA EN EL MUNICIPIO SAMACÁ Y CHIVATÁ, BOYACÁ
No full textEl municipio de Samacá (Boyacá) constituye una importante zona en la extracción de carbón y producción de coque en Colombia. Un estudio realizado por la Universidad Santo Tomás Tunja, mediante un sistema de monitoreo continuo, ha identificado durante un periodo anual la presencia de concentraciones elevadas de metales pesados (arsénico, aluminio, hierro y cadmio) en aguas residuales de la región. Las concentraciones encontradas superan los limiten máximos permisibles establecidos por la Resolución 2115 de 2007, lo que representa un riesgo ambiental y sanitario considerable.
Esta investigación propone el desarrollo de membranas filtrantes de alto rendimiento fabricadas mediante la técnica de electrohilado, utilizando una matriz compuesta de PVDF/PLA funcionalizada con oxido de grafeno. La integración de la nanopartícula de óxido de grafeno en la estructura polimérica confiere propiedades fisicoquímicas superiores, incluyendo una arquitectura microporosa optimizada y una distribución homogénea de grupos funcionales oxigenados con alta afinidad hacia iones metálicos. La membrana diseñada presenta características estructurales optimizadas (alta porosidad, superficie especifica elevada y distribución uniforme de sitios de adsorción) que facilitan la interacción entre los grupos funcionales oxigenados del OG y los cationes férricos, mediante mecanismos de adsorción superficial.This research proposes an alternative for water filtration through the design of a polymeric membrane elaborated with the electrospinning technique and using polymers polyvinylidene fluoride (PVDF) and poly (lactic acid) (PLA) functionalized with graphene oxide (GO) to adsorb iron cations. It is expected to obtain a polymeric membrane with high porosity, contact surface area and electrostatic interaction between the oxygenated functional groups of the OG and the metal ion, properties that allow obtaining a high percentage of iron adsorption. This proposal arises from the need to decontaminate industrial wastewater, which has a negative impact on the environment. The municipality of Samacá (Boyacá) is an important coal and coke production area. A study carried out by the Universidad Santo Tomás Tunja through a community platform for monitoring water quality in this region reported for one consecutive year the presence of heavy metals such as arsenic, aluminum, iron and cadmium in wastewater. The amounts reported are higher than the permissible limit according to Resolution 2115 of 2007. Thus, this alternative is proposed as a solution to this local problem, starting with the study of this ion.Magíster en Ingeniería Civil con Énfasis en HidroambientalMaestrí
Abstracts of the International Conference on Recent Trends in Mathematics and Computer Science 2023
Get PDFThis book presents the abstracts of the selected contributions to the International Conference on Recent Trends in Mathematics and Computer Science 2023 (ICRTMCS-2023), held on 19-21 October 2023 by the Auxilium College of Arts and Science for Women, Regunathapuram, Tamil Nadu, India. ICRTMCS-2023 was a multidisciplinary conference organized with the objective of bringing together eminent academicians, research scholars, and students to exchange ideas, communicate, to discuss research findings and new advances on recent and emerging trends in the field of Mathematics and Computer Science. Moreover, the conference would also enable the participants to explore new fields and gain immense knowledge.
Conference Title: International Conference on Recent Trends in Mathematics and Computer Science 2023Conference Acronym: ICRTMCS-2023Conference Date: 19-21 October 2023Conference Venue: Hybrid (Online and Auxilium College of Arts and Science for Women, Regunathapuram, India)Conference Organizer: Departments of Mathematics and Computer Science, Auxilium College of Arts and Science for Women, Regunathapuram, Tamil Nadu, Indi
