Quality Assessment of Drinking Water in Vehari District of Punjab, Pakistan

The current study is performed to assess the physio-chemical characteristics and drinking water quality in three Tehsils (Mailsi, Burewala and Vehari) of District Vehari, Punjab (Pakistan). The water samples of investigated regions were subjected to physicochemical characterization (pH, EC, TDS, HCO3-, CO3-2, Cl-, NO3-, PO4-3, SO4-3, Na+, K+, Ca+2, Mg+2, Fe+2, Cu+2, Zn+2 and Mn+2). It was demonstrated that certain parameters were exceeding WHO standard limits. The water of Lalazar colony, college town, Y-Block and Sharqi colony was found unfit for drinking purposes so it may cause serious health concerns in the citizens of the investigated areas

Electrochemical Evaluation of Human Hair Derived Carbon Particles

Pollution has become a great challenge for modern world. Hence, recycling trend is growing worldwide. Human hair, a fancy part of human body, creates a bulk of litter on trimming, yet has wide spectrum of applications. A facile thermal approach has been implemented in this research to synthesize carbon particles (CP) from waste human hair. CP surface analyses was made through SEM, ATR-FTIR, TGA & Raman. Efficient adsorptive behavior of synthesized CP against Zn and Pb has been observed with 70% Pb (9.325 mg/10 mg CP) and 90% Zn (37 mg/10 mg CP) adsorption. The augmented adsorptive capacity of CP ultimately finds its application in heavy metal removal from waste water. Cyclic voltammetry (CV) justified outstanding adsorption behavior of CP by speedy electron transfer, better charge storage and swift ionic diffusion; with 53 mC current carrying capacity and 1.98 to 4.37 cm(2) effective surface area. CV data has shown electrochemical irreversibility and double layer capacitance. CP conductivity has been observed from 19.78 mu S to 38.4 mu S, with. values between -17.4 mV and -28.6 mV. (c) 2020 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited

Amniotic Membrane as a Scaffold for Periodontal Tissue Engineering

Periodontal disease is characterized by the destruction of tooth supporting structures, and continuous destruction of these structures may lead to alveolar bone defects and tooth loss. Periodontal therapy aims to arrest the disease progression as well as to regenerate the loss of structures. Since, the regeneration of these structures is a complex process, cell-based tissue engineering has become one of the methods for periodontal tissue regeneration. In order to give mechanical support to the cells, an amniotic membrane has been proposed as one type of periodontal scaffold, due to its predictable properties. In this review, the integral structure, properties and the recent research in application of amniotic membranes, basically in medical and dental surgeries, along with its potential as a scaffold in periodontal regeneration are highlighted. Amniotic membranes have shown great potential as a suitable substrate/scaffold in in vitro and animal studies; thus provide an alternative for scaffolds materials nowadays. Nevertheless, further studies are required to establish its role and efficacy in periodontal tissue engineering

Methyl 4-hy­droxy-2-meth­oxy­carbonyl­methyl-1,1-dioxo-1,2-dihydro-1λ6,2-benzothia­zine-3-carboxyl­ate1

There are two independent mol­ecules in the asymmetric unit of the title compound, C13H13NO7S, which have almost identical geometries. The thia­zine ring adopts a sofa conformation in both mol­ecules and the mol­ecular conformations are stabilized by intramolecular O—H⋯O hydrogen bonds. Inter­molecular C—H⋯O hydrogen bonds stabilize the crystal packing

Evaluation of the human amniotic membrane as a scaffold for periodontal ligament fibroblast attachment and proliferation

This study was aimed at evaluating the ability of the human amniotic membrane (HAM) to act as a scaffold for the growth of the main cells in periodontal regeneration, human periodontal ligament fibroblasts (HPDLFs). The HAM has many biological properties that are suitable for periodontal tissue regeneration such as low immunogenicity, anti-fibrosis, anti-inflammation, and a rich extracellular matrix component. Commercially available HPDLFs were seeded onto the HAM, and the attachment and proliferation of the cells were observed through scanning electron microscopy (SEM) and histological analysis. Cell viability was assessed using the alamarBlue® proliferation assay at days 1, 3, 7, 14 and 21. Histologically, the HPDLFs showed a monolayer to multilayer attachment onto the HAM from day 1 to day 7. The SEM analysis demonstrated that the HPDLFs had attached appropriately onto the HAM surface at day 1 to day 3, and began overlapping at day 7, while maintaining their flat shape. However, by days 14 and 21, there was an alteration in the morphology of the cells, where they later became rounded. The proliferation assay showed that the viability of the HPDLFs on the HAM had increased significantly from day 1 to day 7 (p=0.012), but later showed significant reduction at day 14 (p=0.002) and day 21 (p=0.005). In conclusion, this study showed that the HAM was able to function well as a scaffold for HPDLFs within 7 days, and thus, it can be a promising scaffold for periodontal regeneration. However, the behaviour of the cells in relation to the membrane over longer culture duration warrants further investigation

Experimental evaluation of cobalt adsorption capacity of walnut shell by organic acid activation

Abstract Cobalt, from industrial waste and nuclear laundry, possess health risk to human beings, animals and plants. Number of methods, other than adsorption, have been reported in literature for Co removal from waste water. In this research walnut shell powder after modification has been utilized for Co adsorption. First step of modification involved chemical treatment by four different organic acids for 72 h. Samples were collected at 24, 48 and 72 h. Second step involved thermal treatment of 72 h samples. Unmodified and modified particles have been analyzed by chemical methods and instruments i.e. UV spectrometer, FTIR, cyclic voltammetry (CV) and microscopic imaging. Thermally treated samples have shown augmented Co adsorption. CV analysis showed thermally treated samples with better capacitance. Particles modified by oxalic acid presented better Co adsorption. Oxalic acid treated particles activated for 72 h with thermal treatment provided maximum adsorption capacity 1327 ± 20.6 mg/g against Co(II) at pH 7, stirring 200 rpm, initial concentration 20 ml, adsorbent dosage (5 mg) and contact time 240 min at room temperature

Use of digital thruster to separate the cadmium and lead metals from mixture sample

The present work deals with the use of a digital thruster (DT) for the separation of cadmium and lead metals from mixture samples. Mixtures of lead and cadmium salts with varying concentrations were injected into a free electrolytic diffusion apparatus (FEDA). The microcathodes surrounding the central anode were programmed witha DT. The DT distributed the charge over the microcathodes at time intervals of 100-900 mu s or at the frequency of 625-70 Hz. The microcathodes become electrodeposited with lead and cadmium metals, showing both separation and co-deposition. The purity of deposited metals was analyzed by Atomic Absorption Spectroscopy (AAS) using PerkinElmer and Aldrich AAS standards. (C) 2008 Elsevier B.V. All rights reserved