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522 articles for “dispersant”
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An Analysis of Optical Transmission System using Fiber Bragg Grating (FBG) with Power Optimization and Dispersion Compensation
Abstract: AbstractThe Fiber Bragg Grating (FBG) is a low cost filter for wavelength selection and also has low insertion loss. We know that Dispersion Compensation (DC) and Power Optimization (PO) are one of the most important parameters of the optical communication system. In this proposed communication model, dispersion compensation has been achieved and also we optimized almost same power at the receiver end, also we have calculated output power for different …
Published in Trends in Opto-electro & Optical Communication · Vol. 5, Issue 2, 2015 · pp. 1–5 Read article
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Design and Development of Sustained Release Tablets using Solid Dispersion of Beclomethasone Dipropionate
Abstract: In present study an attempt was made to enhance the solubility of beclomethasone dipropionate by solid dispersion method followed by formulating sustained release matrix tablet of beclomethasone dipropionate to improve the patient compliance. Beclomethasone dipropionate has poor water solubility and short elimination half-life hence solid dispersion of beclomethasone dipropionate were prepared with β-cyclodextrin and PEG 6000 as carrier by using physical mixture, solvent evaporation and kneading method. The prepared solid …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 2, Issue 3, 2015 · pp. 30–41 Read article
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Enhancement of Solubility and Dissolution of Ibuprofen by Solid Dispersion Technique with the Help of Box-Behnken Design
Abstract: This study aims to develop a stable solid dispersion of ibuprofen by solvent evaporation technique with increased solubility, dissolution, and stability. Solid dispersion of ibuprofen with PEG-6000 and poloxamer 407 in different weight ratios was prepared using solvent evaporation technique. The saturation solubility study showed a significant effect of all polymers on the solubility of ibuprofen in batch F6, which showed a maximum solubility of 97.99 g/mL in water. The …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 9, Issue 2, 2022 · pp. 25–31 Read article
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Orally Dispersible Tablet of Mesalazine: Formulation and Evaluation
Abstract: Oral disintegrating tablets (ODTs) become increasingly more and more popular, particularly among elderly and paediatric patients who have difficulties with swallowing. The 5-aminosalicylic acid compound oral mesalazine, frequently referred to as mesalamine, is used to treat mild to severe ulcerative colitis and has a high percentage of success in causing and establishing response. Mesalazine has a topical therapeutic action at the location of the suffering colonic mucosa. The medication’s disadvantage …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 12, Issue 2, 2025 · pp. 16–25 Read article
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Comparative Study on Oro Dispersible Tablets of Candesartan Cilexetil Formulated with Natural and Synthetic Disintegrants
Abstract: Candesartan cilexetil, a BCS class II drug with low aqueous solubility and poor bioavailability (15%), poses challenges for oral delivery. To address this limitation, the present study focuses on polymer-based inclusion complexation and composite formulation strategies to enhance solubility and dissolution behavior. The drug was incorporated into β-cyclodextrin (β-CD), a cyclic oligosaccharide polymer, by the kneading method in different drug-to-carrier ratios. Among these, the 1:1 molar ratio complex exhibited the …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 687–695 Read article
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Numerical modeling of Nocardia Migration Influenced Transport pressured by Dispersion and velocity in Fine Sand Formation in Wetland Environment
Abstract: AbstractThis paper monitor the behaviour of Nocardia in fine sand deposition, the study express the velocity and dispersion influences on Nocardia migration in wet land environment. The transport process at different litho structure observed variation on their concentration in the study area, this condition developed fluctuation on the transport system within the predominant strata, the concentration from three to thirty metres developed fluctuation base on the influences from dispersion and …
Published in Journal of Water Resource Engineering and Management · Vol. 5, Issue 1, 2018 · pp. 6–13 Read article
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Performance Comparison of FBG as Dispersion Compensator with Different Frequency Chirp in an Optical Fiber Link
Abstract: AbstractRecent day’s optical communication is a most popular technique for transmission of data. We share most of our data through optical network, but the main huddle in performance is dispersion. However, the compensation of dispersion by Dispersion Compensating Fiber (DCF) and Fiber Bragg Grating (FBG) can boost significantly the system. Our proposed work investigates and analyzes the performance of optical transmission system at 1550 nm using FBG as dispersion compensator. …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 3, 2018 · pp. 1–7 Read article
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Modeling Reaction Rate of Dispersion Coefficient and Oxygen Deficit on Nitrobacteria Transport in Onu-Imo River
Abstract: The migration rate of nitrobacteria in the Onu-Imo River was monitored based on some variables that determine the predictive model for such pollution transport. These parameters were factors applied in developing the derived model for the study. The variables were integrated into the system to monitor their various rates of impact on the transport process in the study environment. This was monitored by applying a one-dimensional flow transport system at …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 11, Issue 1, 2021 · pp. 28–41 Read article
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Dispersion Analysis of Polypyrrole and ZnO Nanocomposite Thin Film using SPR Techniques
Abstract: The dispersion analysis of any material is crucial for studying its structure and composition. The interaction of the structure of the material with electromagnetic energy is also determined by studying its dielectric or optical properties. For studying dielectric properties, optical approaches are favored over electrical techniques, and Surface Plasmon Resonance (SPR) is the most suited of all techniques. It is used as a result to investigate the optical and dielectric …
Published in Journal of Polymer & Composites · Vol. 10, Issue 2, 2022 · pp. 79–85 Read article
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Improved Low Confinement Photonic Crystal Fiber with Ultra Flattened Dispersion
Abstract: AbstractIn this study, to obtain lower value of dispersion with flatness for wideband, more complicated design will be proposed with multiple-hole diameter and shapes. Confinement loss is also reduced by increasing the number of rings. We optimized cladding region in which there are holes of different diameter and shapes. Numerical investigation shows that value of confinement loss is very low -0.00116 dB/Km and ultra-flat dispersion over wideband at operating frequency …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 2, 2018 · pp. 1–5 Read article
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Improvised Rapid Antibiotic Sensitivity Test by Disc Dispersion Method
Abstract: Multidrug resistance is the one of vital issue globally, there are several causes for multidrug resistance, like improper utilization of antibiotics and selection of suitable antibiotics are the one of the predominant reasons for multidrug resistance gaining. To enable physician to select the suitable antibiotics, appropriate antibiotic sensitivity shall be performed in shortest time period. A method has been developed to get the antibiotic sensitivity test in 2–3 hours for …
Published in Research and Reviews: A Journal of Microbiology and Virology · Vol. 8, Issue 3, 2018 · pp. 44–57 Read article
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Investigation on the Periodic Dispersion of TPH in Stagnant Water Environment
Abstract: An investigation was carried out on the dispersion of crude oil in stagnant water environment and studied experimentally using relevant mathematical models. Precisely two tanks of equal capacity were filled to about 1.5m3 volumes of fresh water and salt water respectively. Also, we considered TPH diffusion in the stagnant water environment which was studied using Developed Dispersion and Degradation Model incorporated with first order degradation rate as well as the …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 14, Issue 1, 2023 · pp. 73–77 Read article
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Modeling Dispersed Count Data: Evaluating the Conway–Maxwell–Poisson Regression with COVID-19 Mortality Data
Abstract: Count data are prevalent in diverse fields such as biology, healthcare, psychology, and marketing, characterized by non-negativity and inherent heteroskedasticity, often exhibiting overdispersion or underdispersion. Traditional Poisson regression, which assumes equal mean and variance, is inadequate for such dispersed data. To address this, various generalized linear models (GLMs) and their extensions, including negative binomial (NB) and Conway–Maxwell–Poisson (CMP) regressions, are utilized. This study evaluates the performance of CMP regression compared …
Published in Research & Reviews : Journal of Statistics · Vol. 13, Issue 3, 2024 · pp. 18–26 Read article
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PSO-DFFP Technique Used for Optimal Network Reconfiguration with Dispersed Generation
Abstract: Dispersed Generation and Network Reconfiguration have been generally engaged to maintain voltage level with permissible limit and decrease the energy losses in the Distribution Systems. In this article, a Partial Swarm Optimization with Distinctive Feed Forward Propagation (PSO-DFFP) controller is developed to minimize the power losses in Dispersed Generation and network reconfiguration. Different scenarios are used to analyze the performance of developed method. The designed and developed method is effectively …
Published in Journal of Control & Instrumentation · Vol. 13, Issue 2, 2022 · pp. 1–8 Read article
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Performance evaluation of a hybrid dispersion compensation technique (DCF + FBG) for the deployment of WDM optical systems
Abstract: A 4-channel WDM optical communication system is configured and a hybrid dispersion compensation technique which realizes the transmission of signals over a 120 km single mode optical fiber is proposed in the present article. The hybrid scheme which is put forward in this paper involves the combination of (post + pre) DCF module and a FBG module. The proposed layout is simulated using the Optisystem 15.0 software and the simulation …
Published in Journal of Advances in Shell Programming · Vol. 5, Issue 1, 2018 · pp. 9–13 Read article
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Performance Improvement of SER in Linear Dispersive Coded 4x4 MIMO Systems using Precoding and Channel Encoding
Abstract: In this paper, Symbol-Error-Rate (SER) performance of Linear dispersive coded (LDC)4X4 MIMO system over Rayleigh and Rician fading channelshas been discussed. Channel encoder has been used to reduce the effect of the burst errors occurred due to noise. Convolution coding and inter-leaver has reduced the effect of burst noise in LDC system. Precoding requiring Channel state information at the transmitter (CSIT) has been used to lessen the effect of fading. …
Published in Recent Trends in Electronics Communication Systems · Vol. 2, Issue 3, 2015 · pp. 18–31 Read article
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Vibration Characterization of SiCp and Fly Ash Dispersion Strengthened Aluminium 5083 Composites
Abstract: The requirements of current day engineering applications is based on high damping materials which exhibit superior mechanical properties as well as high damping limit for vibrations. In structures made of metals and composites, it is difficult to achieve high damping limit and great mechanical properties at the same time. This is majorly due to the infinitesimal systems that result in "microscopic mechanisms and parameters affecting the mechanical strength". However, to …
Published in Journal of Aerospace Engineering & Technology · Vol. 7, Issue 3, 2017 · pp. 61–72 Read article
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Dispersed Air Flotation for the Removal of Solids from Water
Abstract: The quest for clean drinking water is fundamental to our existence as without it, there is no life. This research exploits the feasibility of using principles of the state-of-the-art flotation technique for solid-liquid water clarification. Dispersed air flotation [DAF] as a separation technique, involves dispersing (scattering) compressed air at high pressure into water. A fluidic oscillator is employed to generate minute micro-bubbles from a 20 microns pore sized ceramic diffusers …
Published in Journal of Water Pollution & Purification Research · Vol. 6, Issue 2, 2019 · pp. 1–11 Read article
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The study of Density Functional Theory for dispersion relation in Carbon nanotube with dielectric medium in a coupling mode
Abstract: The author shall study the excitation of Surface Plasmon and Phonon on cylindrical polar semiconducting material. The possibility of their interaction has been discussed with the help of dispersion relation for the dual mode of CNT by using inherent properties of the dielectric interface in dual mode. The phonon dispersion relation of the CNT is calculated by large supercells containing an isolated nanotube, Density functional Theory, and plane wave basis …
Published in Research & Reviews : Journal of Physics · Vol. 12, Issue 3, 2023 Read article
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A comparative study for the atmospheric dispersion characteristics of two proposed sites for nuclear power plant in Tunisia
Abstract: Countries around the world are considering the adoption of nuclear power due to its majoreconomic advantage with a low greenhouse gases emission, which is vital for climate changemitigation. So, Tunisia is considering adding nuclear energy to its energy sources in order toaddress its energy crisis. In Tunisia, two sites are preselected for Nuclear Power Plant (NPP)implantation: Marsa-Dhouiba site in the far north of the country (N3716, E0929) and Skhira sitein …
Published in Research & Reviews : Journal of Ecology · Vol. 8, Issue 2, 2019 · pp. 1–13 Read article