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Journal articles on the topic 'BCG matrix, concentration index'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Jubair, Haque Md, and Woo-Chul Ahn. "A Study on Competitiveness Improvement of Chittagong Container Port." Institute of Management and Economy Research 14, no. 1 (2023): 439–51. http://dx.doi.org/10.32599/apjb.14.1.202303.439.

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Purpose - Market structure is crucial to identify as it defines the market states for new and existing container ports to perform within a given region. the study aims to compare the major ports in the Bay of Bengal in the context of Chittagong Port. Design/methodology/approach - For this study, the past 9 years of container volume data have been collected and analyzed through the HHI index, BCG matrix and shift effect analysis. Based on the analysis, this study has found that the Chittagong Port is in an oligopoly competitive market structure. Findings - The findings have shown th

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Hess, Svjetlana, Mirano Hess, Marko Novaselić, and Luka Grbić. "Assessment of the Position of North Adriatic Terminals in Container Market Based on Different Indices." Logistics 8, no. 4 (2024): 97. http://dx.doi.org/10.3390/logistics8040097.

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Background: This paper addresses the common question of how service providers compare to their competitors and what their competitive advantages are. It focuses on the North Adriatic ports of Trieste, Koper, Rijeka, Venice, and Ravenna, all members of the North Adriatic Ports Association, analyzing their position, size, competitiveness, and role in the container market. Methods: The research employs three distinct methods: market structure analysis using several concentration indices, the R method for ranking terminals, and aggregation of these indices to create a combined index for port perfo

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DHAOUADI, Sonia, Samir GHANNEM, Sabri KANZARI, and Essaid BILAL. "ECOLOGICAL RISK ASSESSMENT OF HEAVY METALS ACCUMULATION IN SOIL AND ZYGOPHYLLUM ALBUM ALBUM: A CASE STUDY OF INDUSTRIAL PHOSPHATE VICINITY, TUNISIA." Carpathian Journal of Earth and Environmental Sciences 18, no. 2 (2023): 447–59. http://dx.doi.org/10.26471/cjees/2023/018/272.

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Contents and spatial distribution of heavy metals (Zn, Cu, Cd, Ni, As, Pb, Al and Ba) in the fine fraction of surface sediments and in Zygophyllum album shrub of zones influenced by phosphate industry in the region of Gabès, as well as in a control site (Sidi Ejjehmi) were determined. For the assessment of the level of sediment pollution, several parameters were calculated, including enrichment factor (EF), contamination factor (CF), Pollutant Load Index (PLI), Risk factor (Er), potential ecological Risk Index (Ri), Geoaccumulation Index (Igeo), Electrical Conductivity (Ec), Organic Matter (OM

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Fu, Yu, and Zhongliang Feng. "Simulation of the Effect of Coal Microstructures on the Macroscopic Mechanical Behavior." Advances in Civil Engineering 2020 (November 26, 2020): 1–14. http://dx.doi.org/10.1155/2020/1025952.

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This paper investigates the influence of mineral structure on macromechanical behavior of coal under different loading conditions using X-ray CT scanning experimental and numerical methods. The three-dimensional (3D) reconstruction of coal was conducted to assess the spatial distribution characteristics of the mineral structure by AVIZO software. Based on fractal box dimension (BCD) and equivalent diameter, the mineral structures were quantitatively characterized. The 3D finite element models with three distribution characteristics of minerals were built, and the model was considered as a rand

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Bellandi, Francesco. "Further Developments of the Financially-ESG Sustainable Growth Matrix." International Journal of Business and Management 17, no. 2 (2022): 112. http://dx.doi.org/10.5539/ijbm.v17n2p112.

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Bellandi (20212022) has developed a matrix to assess the consistency between sustainable financial growth and sustainable ESG (Environmental, Social, and Governance, hereafter ESG) growth, and how this may impact shareholders versus other stakeholders. This article further builds on that matrix, to link the product life cycle approach and the BCG matrix to the sales growth axis of the matrix and determine both the actual revenue growth and the financially sustainable revenue growth associated to each stage of a product life cycle and each quadrant of the BCG matrix. The article also illustrate

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Ślusarczyk, Aleksander, Karolina Garbas, Piotr Zapała, Łukasz Zapała, and Piotr Radziszewski. "Oncological outcomes of high-grade T1 non-muscle-invasive bladder cancer treatment in octogenarians." International Urology and Nephrology 53, no. 8 (2021): 1591–97. http://dx.doi.org/10.1007/s11255-021-02870-2.

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Abstract Purpose To evaluate the outcomes of high-grade T1 non-muscle-invasive bladder cancer treatment (NMIBC) in elderly patients over 80 years of age. Methods This is a retrospective single tertiary-centre study. Medical records of patients with T1 high-grade NMIBC treated with transurethral resection of the bladder tumour (TURBT) were reviewed. Among 269 patients with high-grade T1 NMIBC, 74 individuals were over 80 years of age at the time of surgery. Finally, 67 patients met the inclusion criteria. Results Only 47.8% of patients (N = 32) received at least five of the six instillations of

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Mazur, O. Y. "PROBLEMS OF ADAPTING THE BCG MATRIX FOR THE ASSORTMENT ANALYSIS." Market economy: modern management theory and practice 23, no. 1(56) (2024): 89–105. http://dx.doi.org/10.18524/2413-9998.2024.1(56).309073.

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At the current stage, the adapted BCG matrix is one of the most popular methods used for planning enterprises' product portfolios (product assortment). At the same time, when it comes to practice, it turns out that some aspects remain unorganized: the choice of basic indicators on the axes of the matrix is still ambiguous, there are disagreements regarding the methodology of their calculation and different approaches to drawing dividing lines. The article considers the problematic aspects of adapting the BCG matrix to the analysis of the company's product range. Our research has shown that the

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Savina, A. A., A. A. Voropaev, and A. A. Alesina. "Quality analysis of BCG vaccine for bladder cancer immunotherapy using Shewhart control charts." Biological Products. Prevention, Diagnosis, Treatment 24, no. 1 (2024): 76–90. http://dx.doi.org/10.30895/2221-996x-2024-24-1-76-90.

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SCIENTIFIC RELEVANCE. The complexity of standardising immunobiologicals, including bacillus Calmette–Guérin (BCG) vaccines, requires improving the approach to statistical analysis of consistency in their quality indicators. Quality analysis tools include Shewhart control charts, which can be used for real-time and retrospective identification and analysis of trends in the processes of interest.AIM. This study aimed to analyse quality indicators of a BCG vaccine for bladder cancer immunotherapy using Shewhart control charts to monitor consistency in manufacturing processes and quality testing

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Zapolnik, Paweł, Wojciech Kmiecik, Anna Nowakowska, et al. "A Multi-Centre, Randomised, Double-Blind, Placebo-Controlled Phase III Clinical Trial Evaluating the Impact of BCG Re-Vaccination on the Incidence and Severity of SARS-CoV-2 Infections among Symptomatic Healthcare Professionals during the COVID-19 Pandemic in Poland—Evaluation of Antibody Concentrations." Vaccines 11, no. 1 (2022): 75. http://dx.doi.org/10.3390/vaccines11010075.

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Tuberculosis (TB) was the predominant cause of death from a single infectious agent worldwide before the severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) pandemic. Although TB vaccines have been successfully used for about 100 years, their full effect is still unknown. In previous studies, a reduced incidence and mortality from a coronavirus disease in TB-vaccinated populations were reported. In this article, we present the secondary analysis of a randomised controlled trial, reporting the results of a serological assessment evaluating the effect of the Bacillus Calmette–Guéri

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Ghanaatpishehsanaei, Ghazaleh, and Rajinder Pal. "Rheology of Suspensions of Solid Particles in Liquids Thickened by Starch Nanoparticles." Colloids and Interfaces 7, no. 3 (2023): 52. http://dx.doi.org/10.3390/colloids7030052.

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The rheology of suspensions of solid particles in aqueous matrix liquids thickened by starch nanoparticles (SNP) was investigated. The SNP concentration varied from 9.89 to 34.60 wt% based on the aqueous matrix phase. The solids concentration of suspensions varied from 0 to 47 wt% (0 to 56 vol%). The suspensions at any given SNP concentration were generally Newtonian at low solids concentrations. At high solids concentrations, the suspensions were non-Newtonian shear-thinning. With the increase in the SNP concentration, the suspensions become non-Newtonian at a lower solids concentration. The

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Wei, Wen Li, and Xiu Fang Yang. "Research on Liquid Concentration Real-Time Detecting System Based on F-P Interferometer." Key Engineering Materials 326-328 (December 2006): 143–46. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.143.

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A kind of dynamic tracking system for conducting high accuracy measurement of transparent liquid concentration is designed by means of line matrix CCD receiving fringes in accordance with the relations between liquid concentration and refractive index as well as the relations among refractive index, interference light wavelength of optical fiber F-P interferometer and grade orders. The detecting system can recognize or detect 0.01% of concentration variations via measuring a group of alcohol.

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Săndică, Ana-Maria, Monica Dudian, and Aurelia Ştefănescu. "Air Pollution and Human Development in Europe: A New Index Using Principal Component Analysis." Sustainability 10, no. 2 (2018): 312. http://dx.doi.org/10.3390/su10020312.

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EU countries to measure human development incorporating the ambient PM2.5 concentration effect. Using a principal component analysis, we extract the information for 2010 and 2015 using the Real GDP/capita, the life expectancy at birth, tertiary educational attainment, ambient PM2.5 concentration, and the death rate due to exposure to ambient PM2.5 concentration for 29 European countries. This paper has two main results: it gives an overview about the relationship between human development and ambient PM2.5 concentration, and second, it provides a new quantitative measure, PHDI, which reshapes

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Gandhi, Sumirtha, Tulasi Malini Maharatha, Umakant Dash, and Suresh Babu M. "Level of inequality and the role of governance indicators in the coverage of reproductive maternal and child healthcare services: Findings from India." PLOS ONE 16, no. 11 (2021): e0258244. http://dx.doi.org/10.1371/journal.pone.0258244.

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Background Diligent monitoring of inequalities in the coverage of essential reproductive, maternal, new-born and child health related (RMNCH) services becomes imperative to smoothen the journey towards Sustainable Development Goals (SDGs). In this study, we aim to measure the magnitude of inequalities in the coverage of RMNCH services. We also made an attempt to divulge the relationship between the various themes of governance and RMNCH indices. Methods We used National Family Health Survey dataset (2015–16) and Public Affairs Index (PAI), 2016 for the analysis. Two summative indices, namely C

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Bobo, Firew Tekle, and Andrew Hayen. "Decomposition of socioeconomic inequalities in child vaccination in Ethiopia: results from the 2011 and 2016 demographic and health surveys." BMJ Open 10, no. 10 (2020): e039617. http://dx.doi.org/10.1136/bmjopen-2020-039617.

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ObjectivesMonitoring and addressing unnecessary and avoidable differences in child vaccination is a critical global concern. This study aimed to assess socioeconomic inequalities in basic vaccination coverage among children aged 12–23 months in Ethiopia.Design, setting and participantsSecondary analyses of cross-sectional data from the two most recent (2011 and 2016) Ethiopia Demographic and Health Surveys were performed. This analysis included 1930 mother–child pairs in 2011 and 2004 mother–child pairs in 2016.Outcome measuresCompletion of basic vaccinations was defined based on whether a chi

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Sarkar, Subhadip. "Assessment of Competitive Position of a Firm Using a Multi-dimensional Herfindahl–Hirschman Index and Linear Additive Directional Distance Function." Indian Economic Journal 67, no. 1-2 (2019): 128–46. http://dx.doi.org/10.1177/0019466220942904.

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Herfindahl–Hirschman has been one of the renowned techniques for the measurement of market concentration. This article proposes an assessment of concentration with the aid of a matrix termed as a multi-dimensional Herfindahl–Hirschman index for a set of outputs which are possibly categorised under line items. The extant research is aimed to achieve the sole objective of investigating and obtaining a direction vector for augmenting the market share of a firm in a specified manner to strengthen the competitive position. The first eigenvector computed from the normalised non-centred covariance ma

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Ma, Shuang. "Research on dynamic evaluation method of individual scientific impact under multiple key nodes." Information Research an international electronic journal 28, no. 3 (2023): 110–22. http://dx.doi.org/10.47989/ir283397.

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Introduction. The purpose of this paper is to research an evaluation method for the development trend of the scientific impact of individual scientists before and after different key nodes in scientific careers. Method. This paper focuses on scientists at universities in Shanghai who obtained their first key programmes from the National Natural Science Foundation of China (NSFC) from 2011 to 2015. A two-node piecewise linear regression is used to divide the scientists’ individual academic trajectories. The Boston Consulting Group matrix (BCG-M) model is used to propose four types of talent. An

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Saeed, Humaira, Muhammad Ramzan, and Abid Hussain. "Effect of Polymer Type, Concentration and Formulation Technique on Mucoadhesive Strength and Swelling Index of Clarithromycin Tablets." Pharmaceutical Communications 2, no. 1 (2023): 19–29. http://dx.doi.org/10.55627/pharma.002.01.0281.

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This study aims to evaluate the effect of polymer type, concentration, and formulation technique on mucoadhesion and the Swelling Index of matrix tablets. Tablets were formulated by wet-granulation, solid dispersions, and direct compression techniques using different polymers in different concentrations (D:P 5:1, 5:2, and 5:3). Swelling Index and Mucoadhesive strength were analyzed for all the formulations (F1-15). The physicochemical parameters of the tablets were found to be within the acceptable limit. The swelling index for matrix tablets (F1-15) prepared by wet-granulations technique was

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Golovkin, Pavel N. "Assessment of Russian Regions’ Readiness for Cloud Service Adoption." Теория и практика общественного развития, no. 9 (September 25, 2024): 66–74. http://dx.doi.org/10.24158/tipor.2024.9.7.

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The objective of the study is to develop methodological approaches for the comparative assessment of Rus-sian regions’ readiness to adopt cloud services and the intensity of their usage, in order to substantiate strategic directions for the development of the infocommunication sector at the regional level. The approach is based on the construction of integrated indices of economic and infrastructural conditions favorable to cloud service adoption, as well as an index of the intensity of their usage. The selection of statistical indicators included in these indices is justified. A methodology f

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Zhang, Yun, Xun Xie, Ze-Kun Yang, Jiong-Ju Hao, Zhi-Gang Xu, and Hong-Wei Yang. "Study on the Spectrum of Photonic Crystal Cavity and Its Application in Measuring the Concentration of NaCl Solution." Zeitschrift für Naturforschung A 72, no. 4 (2017): 345–49. http://dx.doi.org/10.1515/zna-2016-0434.

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AbstractIn this article, we propose an approach to measure solution concentrations by using photonic crystal cavities. Based on the experimental data, the refractive index of a NaCl solution is proportional to the concentration. Filling the proposed photonic crystal cavity with a NaCl solution, we calculate the spectral transmission using the transfer matrix method. We found that the cavity transmittance was proportional to the refractive index of the NaCl solution, and thus we obtained a linear relationship between cavity transmittance and the concentration of the NaCl solution. The formula w

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Dinodiya, S., B. Suthar, and A. Bhargava. "Detection of haemoglobin concentration in blood samples using nanophotonic biosensor." Journal of Physics: Conference Series 2335, no. 1 (2022): 012014. http://dx.doi.org/10.1088/1742-6596/2335/1/012014.

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Abstract A biosensor device using one dimensional photonic crystal is designed for monitoring haemoglobin concentration in blood. Using the transfer matrix approach, the transmission spectra of a multilayered crystal structure (AB)7/ADA/(BA)7 is calculated. GaN is utilised as a media with a high refractive index (A), whereas air (B) is employed as a medium with a low refractive index. Here, defect layer (D) is chosen as blood sample. A resonant peak within photonic band gap can be shifted by a change in haemoglobin concentration in transmission spectrum. The sensor has the values of sensitivit

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Mohaniya, Payal, Dipti Modi, and Rajat Pawar. "A REVIEW ON SUSTAINED RELEASE MATRIX TABLET." International Journal of Pharmaceutical Sciences and Medicine 9, no. 2 (2024): 52–58. http://dx.doi.org/10.47760/ijpsm.2024.v09i02.007.

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In the present study Sustained release matrix tablet is formulated mainly by wet granulation or direct compression method .Sustained release drug delivery maintains the therapeutic concentration of drug in the bloodstream over a long period of time and thus improves patient compliance by reducing frequency of dosing, minimized fluctuations in drug levels, lowering the therapeutic index and improving treatment efficacy. Nowadays Matrix tablets as oral solid dosage form are most suitable for the sustained release drug delivery. In a matrix system a drug is homogeneously dispersed or dissolved wi

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Pal, Anuva, and Rajinder Pal. "Rheology of Emulsions Thickened by Starch Nanoparticles." Nanomaterials 12, no. 14 (2022): 2391. http://dx.doi.org/10.3390/nano12142391.

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The rheology of oil-in-water (O/W) emulsions thickened by starch nanoparticles is investigated here. The starch nanoparticle concentration is varied from 0 to 25 wt% based on the matrix aqueous phase. The oil concentration is varied from 0 to 65 wt%. At a given nanoparticle concentration, the emulsions are generally Newtonian at low oil concentrations. The emulsions become shear-thinning at high oil concentrations. The increase in nanoparticle concentration at a given oil concentration increases the consistency of the emulsion and enhances the shear-thinning behavior of emulsion. The rheologic

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Tushar, D. Fegade, R. Patil Vijay, and A. Deshmukh Tushar. "Evaluation of Modified Gum From Pistacia Lantiscus As A Release Retardant Matrix In The Tablet Dosage Form." American Journal of PharmTech Research 13, no. 02 (2023): 07–18. https://doi.org/10.5281/zenodo.7878365.

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In the current investigation we formulated and evaluates matrix tablet using modified gum of <em>Pistacia lantiscus</em> gum (PLMG) as natural matrix forming agent used in various successively increasing concentration. The pre-compression study of the powder blends of drug, PLMG and other excipients were done by calculating bulk density, tapped density, angle of repose and carr’s index (% compressibility) and hausner’s ratio. The tablets using PLMG as matrix forming agent were prepared by direct compression method and prepared tablets were evaluated for thickness, hardness, weight

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Deshkar, Sanjeevani S., Arvind S. Pawara, and Satish V. Shirolkar. "FORMULATION AND OPTIMIZATION OF FLOATING TABLETS OF CLOPIDOGREL BISULPHATE USING DESIGN OF EXPERIMENTS." International Journal of Applied Pharmaceutics 10, no. 6 (2018): 126. http://dx.doi.org/10.22159/ijap.2018v10i6.27873.

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Objective: The present study aimed at designing of floating matrix tablet of clopidogrel bisulphate by design of experiments.Methods: The tablets were prepared by direct compression technique using hydroxypropyl methylcellulose K15 (HPMC) as a matrix polymer and sodium bicarbonate as a gas generating agent. In order to optimize the concentration of HPMC (X1) and sodium bicarbonate (X2), a 32 full factorial design was employed. The tablet formulations were evaluated for floating lag time (Y1), floating or buoyancy time (Y2), percent water uptake, and differential scanning calorimetry (DSC) and

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Yada, Dereje Y. "Inequality in child immunization coverage in Ethiopia: evidence from Expanded Program for Immunization coverage survey." Eximia 9 (April 29, 2023): 1–10. http://dx.doi.org/10.47577/eximia.v9i1.243.

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Background: Immunization is one of the cost-effective public health interventions, and can be used to prevent life-threatening childhood illnesses. This study aimed to assess disparities in child immunization coverage in Ethiopia. Method: Data from the 2012 Ethiopian Expanded Program for Immunization coverage survey was used. In this study, absolute and relative equity analysis was employed based on socioeconomic variables Result: Equity analysis was conducted in 3,748 subjects out of 3,762 child caregivers’ data. The concentration index among the poorest and richest group for BCG

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Vernizzi, Achille. "Applying the Hadamard product to decompose Gini, concentration, redistribution and re-ranking indexes." Statistics in Transition new series 10, no. 3 (2009): 505–24. http://dx.doi.org/10.59170/stattrans-2009-037.

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Gini and concentration indexes are well known useful tools in analysing redistribution and re-ranking effects of taxes with respect to a population of income earners. There are several attempts in the literature to decompose Gini and re-ranking indices to analyse potential redistribution effects and the unfairness of a tax systems, including ones that consider contiguous income groups being created by dividing the pre-tax income parade according to the same bandwidth. However, earners may be very often split into groups characterized by social and demographic aspects or by other characteristic

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Amelkovich, Yuliya, Olga Nazarenko, Puthenpurakalchira Maniyan Visakh, and Tatiyana Zadorozhnaya. "Study of Thermal Behavior of Epoxy Composites Filled with Different Natural Zeolites." Materials Science Forum 1065 (June 30, 2022): 23–33. http://dx.doi.org/10.4028/p-jhe993.

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One of the ways to enhance thermal stability and reduce the flammability of polymers is the introduction of fillers with flame retardant properties. The paper studies the effect of natural zeolites of the Sakhaptinsk and Shivyrtuysk deposits on the thermal stability and flame retardancy of epoxy composites. The thermal stability of epoxy composites was characterized by thermogravimetric analysis in oxidizing (air) and inert (argon) atmospheres. The parameters of thermo-oxidative degradation and thermal degradation of the samples with a filler concentration of 0, 1, 5, and 10 wt% were studied.

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de Miranda, Leila Figueiredo, Antônio Hortêncio Munhoz Jr., Terezinha Jocelen Masson, and Maura Vincenza Rossi. "Influence of Concentration of Pseudoboehmite Nanofiller on the Thermal and Mechanical Properties in Polystyrene Compounds." Advances in Science and Technology 97 (October 2016): 11–17. http://dx.doi.org/10.4028/www.scientific.net/ast.97.11.

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Polymeric nanocomposites are hybrid materials, where fillers with nanometric dimensions are dispersed in a polymeric matrix. The fillers have a high surface area, promoting better dispersion in the polymeric matrix and therefore an improvement in physical properties of the composite depending on the homogeneity of the material. In the present work, nanocomposites of polystyrene with different concentrations of pseudoboehmite obtained by a sol-gel process, and treated with octadecylamine were prepared. The nanocomposites were characterized by thermal and mechanical tests. The addition of pseudo

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Meziane, Ouahiba, Abderrahim Bensedira, and Melia Guessoum. "Rheological, mechanical, and morphological behaviour of polypropylene composites reinforced with ultrafine kaolinite particles." Matériaux & Techniques 112, no. 1 (2024): 105. http://dx.doi.org/10.1051/mattech/2024012.

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To develop charge/matrix interactions and improve the rheological, mechanical, and morphological performances of the matrix polypropylene, PP/kaolinite composites were prepared using the melt intercalation method at 190 °C. The rheological and mechanical properties of polypropylene/kaolin composites have been evaluated at various concentrations of untreated and/or treated kaolin. It was shown that the melt flow index (MFI) varies visibly but slightly compared to that of the matrix with increasing kaolin content. Furthermore, when the kaolin loading is enhanced, the apparent shear viscosity (ηa

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Prasetya Dwi Aurianto, Muhammad, Dimas Taha Maulana, and Steven Chandra. "Evaluation of Successful Matrix Acidizing Method in A Geothermal Well with Comparative Sensitivity of Acid Fluid Models, Volume, and Concentration: A Case Study on Well “X”." IOP Conference Series: Earth and Environmental Science 1014, no. 1 (2022): 012015. http://dx.doi.org/10.1088/1755-1315/1014/1/012015.

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Abstract One of the challenges in producing a well is formation damage. Stimulation treatment is known can improve production by removing the formation damage. Matrix acidizing is the most known and proven effective for stimulation treatment. Three matrix acidizing models for sandstone are commonly used, i.e., Dowell, McLeod, and Kalfayan. Matrix acidizing study is conducted in geothermal sandstone formation well with quartz and silica dominated. Five acid fluid models will be injected to compare and evaluate the result of skin factor and productivity index during acidizing. Five types of acid

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Shchelokova, Svetlana, and Vladimir Vertogradov. "SV matrix: strategic competitive analysis tool based on the dominance level." Moscow University Economics Bulletin, no. 6 (December 30, 2021): 137–62. http://dx.doi.org/10.38050/0130010520216.7.

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This article addresses current tools for assessing the level of dominance in industries (Concentration Index (CR), Lind Index (L), Hall-Tideman Index (HT), Herfindahl–Hirschman Index (HHI)), identifies the limitations of the existing toolkit, and proposes its modification based on the developed SV Matrix, which allows analyzing the competitive situation on different markets. Drawing on the RAEX ranking of 2020 for four industries (consulting, audit, outsourcing, information technology), the authors propose classical indices modification algorithms to conduct a comparative analysis of the domin

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Gayvoronsky, V. Ya, M. A. Kopylovsky, V. O. Yatsyna, A. I. Rostotsky, M. S. Brodyn, and I. M. Pritula. "Photoinduced Refractive Index Variation in the KDP Single Crystals with Incorporated TiO2 Nanoparticles Under CW Laser Excitation." Ukrainian Journal of Physics 57, no. 2 (2012): 159. http://dx.doi.org/10.15407/ujpe57.2.159.

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For the first time, the impact of TiO2 (anatase modification) nanocrystals on the photoinduced optical absorption and refractive index variations in KDP single crystals with the self-action of CW laser radiation at 532 and 1064 nm is studied. It is shown that the incorporation of anatase nanoparticles changes the sign of the refractive nonlinear optical response relatively to that for the KDP crystal matrix at 532 nm due to the resonance overlapping of the energy states of intrinsic defects in the crystal matrix and the surface states of TiO2 nanoparticles. The sign and the magnitude of the ph

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George, D. K., G. A. Ramm, L. W. Powell, et al. "Evidence for altered hepatic matrix degradation in genetic haemochromatosis." Gut 42, no. 5 (1998): 715–20. http://dx.doi.org/10.1136/gut.42.5.715.

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Background—Altered matrix degradation contributes to fibrosis in some liver diseases but the role of matrix degradation in fibrogenesis associated with genetic haemochromatosis has not previously been addressed.Aims—To measure serum concentrations of tissue inhibitor of metalloproteinase 1 (TIMP-1) and matrix metalloproteinases (MMP), MMP-1, MMP-2, and MMP-3 in patients with haemochromatosis and control subjects.Patients—Forty patients with haemochromatosis and 19 healthy control subjects. Ten of the 40 patients were studied before and after venesection therapy.Methods—Serum levels of TIMP-1,

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Kongsriprapan, Sopanat, Kanyakorn Teanchai, Keerati Kirdsiri, Jakrapong Kaewkhao, and Wichian Siriprom. "Investigation some Properties of Bismuth Borate Glasses Containing Al₂O₃." Key Engineering Materials 675-676 (January 2016): 347–50. http://dx.doi.org/10.4028/www.scientific.net/kem.675-676.347.

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The glass samples in bismuth borate glass matrix containing Al2O3, with the composition of xAl2O3 : 30Bi2O3 : (70-x)B2O3 where x are Al2O3 concentration varying from 0.0, 2.0, 4.0, 6.0, 8.0 and 10.0 mol%, have been prepared. The obtained glasses were investigated some physical and optical properties. The results showed that the densities increased with increasing of Al2O3 concentration, whereas the molar volumes decreased. For the absorption spectra, no peak in the UV to NIR regions has been observed. Moreover the energy band gap and the refractive index for all samples have been calculated.

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REZAEI, G., M. R. K. VAHDANI, and M. BARATI. "INTERSUBBAND OPTICAL ABSORPTION COEFFICIENTS AND REFRACTIVE INDEX CHANGES OF AN ELLIPSOIDAL FINITE POTENTIAL QUANTUM DOT." Journal of Nonlinear Optical Physics & Materials 19, no. 01 (2010): 131–43. http://dx.doi.org/10.1142/s021886351000511x.

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Intersubband optical absorption coefficient and refractive index changes of a weakly prolate ellipsoidal quantum dot, using the compact-density matrix formalism and iterative method, are investigated. In this regard, the linear and nonlinear intersubband optical absorption coefficient and refractive index changes of a GaAs / Al x Ga 1-x As ellipsoidal quantum dot, as functions of the dot radius, ellipticity constant, stoichiometric ratio and incident light intensity are calculated. The results indicate that absorption coefficient and refractive index changes strongly depend on the light intens

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Song, Shichao, Yijie Li, Zhuofan Yao, Jie Li, Xiangping Li, and Yaoyu Cao. "3D Laser Nanoprinting of Optically Functionalized Structures with Effective-Refractive-Index Tailorable TiO2 Nanoparticle-Doped Photoresin." Nanomaterials 12, no. 1 (2021): 55. http://dx.doi.org/10.3390/nano12010055.

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The advanced direct laser printing of functional devices with tunable effective index is a key research topic in numerous emerging fields, especially in micro-/nano-optics, nanophotonics, and electronics. Photosensitized nanocomposites, consisting of high-index materials (e.g., titanium dioxide, TiO2) embedded in polymer matrix, are emerging as attractive platforms for advanced additive manufacturing. Unfortunately, in the currently applied techniques, the preparation of optically functionalized structures based on these photosensitized nanocomposites is still hampered by many issues like hydr

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Coelho Junior, Luiz Moreira, Brunna Hillary Calixto de Oliveira, Ingryd Yohane Bezerra Almeida Santos, et al. "Sugarcane Bioelectricity Supply in Brazil: A Regional Concentration and Structural Analysis." Sustainability 17, no. 9 (2025): 3780. https://doi.org/10.3390/su17093780.

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Sugarcane products come from agro-industrial biomass that is increasingly used in the Brazilian energy matrix, which is important for the sustainability and diversification of renewable energy sources. This article examines the concentration and structure of the supply of sugarcane bioelectricity in Brazil from 1975 to 2023. It uses information on the quantity and cumulative licensed potential of sugarcane-based thermoelectric plants in operation, available from the National Electric Energy Agency (ANEEL) through its Generation Information System (SIGA). To measure regional concentration, the

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Ushkov, V. A., and O. L. Figovsky. "Fire-Resiting Composites Based on Polymer Matrix." International Journal of Engineering and Technologies 14 (September 2018): 1–13. http://dx.doi.org/10.18052/www.scipress.com/ijet.14.1.

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In the present work we have studied the thermal stability, flammability, fume evolution of epoxy matrix composites with different types and amounts of hardeners, fillers, plasticizers and fire retardants. It is shown that chemical composition of fillers has little effect on the flammability of epoxy composites when the content of mineral fillers is less than 45% by mass. Smoke formation decreases linearly with increasing the degree of filling. It is shown that to obtain low-combustible materials the oxygen index should exceed 31%. It was found that the optimal concentration of industrial bromi

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Ushkov, V. A., and O. L. Figovsky. "Fire-Resisting Composites Based on Polymer Matrix." International Journal of Engineering and Technologies 14 (September 21, 2018): 1–13. http://dx.doi.org/10.56431/p-2jx5v7.

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In the present work we have studied the thermal stability, flammability, fume evolution of epoxy matrix composites with different types and amounts of hardeners, fillers, plasticizers and fire retardants. It is shown that chemical composition of fillers has little effect on the flammability of epoxy composites when the content of mineral fillers is less than 45% by mass. Smoke formation decreases linearly with increasing the degree of filling. It is shown that to obtain low-combustible materials the oxygen index should exceed 31%. It was found that the optimal concentration of industrial bromi

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Dobrzyniewski, Dominik, Bartosz Szulczyński, and Jacek Gębicki. "Determination of Odor Air Quality Index (OAQII) Using Gas Sensor Matrix." Molecules 27, no. 13 (2022): 4180. http://dx.doi.org/10.3390/molecules27134180.

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This article presents a new way to determine odor nuisance based on the proposed odor air quality index (OAQII), using an instrumental method. This indicator relates the most important odor features, such as intensity, hedonic tone and odor concentration. The research was conducted at the compost screening yard of the municipal treatment plant in Central Poland, on which a self-constructed gas sensor array was placed. It consisted of five commercially available gas sensors: three metal oxide semiconductor (MOS) chemical sensors and two electrochemical ones. To calibrate and validate the matrix

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de Araújo, Magno M., and José P. da Silva. "The Design of a Glycerol Concentration Sensor Based on an LRSPP Hybrid Photonic Biosensor." Sensors 23, no. 4 (2023): 2010. http://dx.doi.org/10.3390/s23042010.

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A refractive index sensor based on an on-chip silicon nitride (Si3N4) ridge waveguide long-range surface plasmon polariton (LRSPP) is theoretically designed. The waveguide sensor consists of a gold film to enable the plasmonic resonance on top of a Cytop polymer layer. A proper finite element method was used to design and optimize the geometric parameters at the optical wavelength of 633 nm. In addition, the spectral performance was evaluated using the transfer matrix method from 580 to 680 nm. The redshifted interference spectrum results from an increasing analyte refractive index. The sensit

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Boichuk, V. I., R. I. Pazyuk, and I. V. Bilynskyi. "The Electrical Conductivity in Superlattices of Spherical Quantum Dots." Фізика і хімія твердого тіла 17, no. 3 (2016): 320–28. http://dx.doi.org/10.15330/pcss.17.3.320-328.

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The electrical properties of semiconductor systems of spherical GaAs / AlxGa1-xAs quantum dots of various dimensions, depending on the energy of the Fermi level and temperature, and the concentration of aluminum in the matrix, are investigated. Dependences of group velocity of electrons on the index of minisons were obtained. Reducing the CT radius, as well as increasing the aluminum concentration in the matrix, results in an increase in group velocity. The change in the sign of the group velocity of individual minisons is caused by the behavior of the isoenergetic surfaces of these minisons.

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Tushar, D. Fegade, R. Patil Vijay, and A. Deshmukh Tushar. "Evaluation of Modified Gum From Pistacia Lantiscus As A Release Retardant Matrix In The Tablet Dosage Form." American Journal of PharmTech Research 13, no. 02 (2023): 7–18. https://doi.org/10.5281/zenodo.8046871.

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ABSTRACT In the current investigation we formulated and evaluates matrix tablet using modified gum of <em>Pistacia lantiscus</em> gum (PLMG) as natural matrix forming agent used in various successively increasing concentration. The pre-compression study of the powder blends of drug, PLMG and other excipients were done by calculating bulk density, tapped density, angle of repose and carr’s index (% compressibility) and hausner’s ratio. The tablets using PLMG as matrix forming agent were prepared by direct compression method and prepared tablets were evaluated for thickness, hardness

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Kushwah, K. K., N. Gupta, K. Khare, S. Singh, F. Aziz, and M. Ramrakhiani. "Synthesis and Characterization of ZnSe/PVA nanocomposites for optical devices." Advanced Electromagnetics 8, no. 4 (2019): 44–49. http://dx.doi.org/10.7716/aem.v8i4.1123.

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This paper reports in situ preparation of ZnSe-PVA nanocomposite film using ecofriendly, safe, inexpensive, facile and non-organometallic synthetic chemical route, with PVA as the stabilizing agent. The XRD studies showed the formation of cubic ZnSe nanoparticles in PVA matrix with an average size of ~7 nm. Energy band gap determined by absorption edge of UV-VIS absorption spectra revealed increase in band gap with decrease in particle size. The optical properties like Refractive index and Photoluminescence (PL) of ZnSe /PVA with varying concentration of ZnSe content are also reported. The blu

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Tikhonov, E., Vasil P. Yashchuk, O. Prygodjuk, V. Bezrodny, and Yu Filatov. "Influence of Fine-Dispersed Dielectric Particles on Dye Luminescence in a Polymer Matrix." Solid State Phenomena 99-100 (July 2004): 153–56. http://dx.doi.org/10.4028/www.scientific.net/ssp.99-100.153.

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The behaviour of the luminescence spectra of the organic dye R6G in a multiple scattering polymer matrix was studied with reference to the parameters of the scattering media. It was found that some of the luminescent parameters depend on the concentration of scattering particles, the refractive index of the scattering particles and the sample thickness. As it was shown, that the reason for these dependences is the reabsorption of luminescence light enhanced by multiple light scattering. In addition, an increase in the absorption caused by multiple scattering was observed.

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Suherman, Meilia, Ike Susanti, Driyanti Rahayu, Rimadani Pratiwi, and Aliya Nur Hasanah. "Performance Evaluation of Molecularly Imprinted Polymer using Propanol as Porogen for Atenolol Recognition in Human Serum." Indonesian Journal of Pharmaceutical Science and Technology 6, no. 1 (2018): 27. http://dx.doi.org/10.24198/ijpst.v6i1.18671.

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Atenolol is a cardiovascular drug that has a narrow therapeutic index with long-term use and it’s often used as doping. Atenolol has a small concentration in human boby and it’s in biological matrix (serum) so in the testing need a selective extraction so the analyte can be pra-concentration and removed from matrix. Two molecularly imprinted polymers (MIPs) on propanol as porogen have been made with two different methods i.e. bulk polymerization and precipitation polymerization. The polymer was made using atenolol as a template, methacrylic acid as a functional monomer, and ethylene glycol dim

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Anand, Praveena Bindiganavile, Santhosh Nagaraja, Nagendra Jayaram, et al. "Kenaf Fiber and Hemp Fiber Multi-Walled Carbon Nanotube Filler-Reinforced Epoxy-Based Hybrid Composites for Biomedical Applications: Morphological and Mechanical Characterization." Journal of Composites Science 7, no. 8 (2023): 324. http://dx.doi.org/10.3390/jcs7080324.

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This study used a hybrid combination of kenaf and hemp fibers and the multi-walled carbon nanotube (MWCNT) reinforcements in the matrix phase to synthesize the composites. A kenaf/hemp fiber blend with MWCNTs in epoxy was used for the specific concentration. The procedure used three composite materials chosen from pilot trials. The ratio of MWCNT filler particles was altered up to the agglomeration limit based on initial trials. Two specimens (2 and 3) were supplemented with MWCNTs in a concentration range of 0.5 wt. % to 1 wt. %, with the fiber concentration being maintained in equilibrium wi

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Gutierrez, Juan Pablo, and Mira Johri. "Socioeconomic and geographic inequities in vaccination among children 12 to 59 months in Mexico, 2012 to 2021." Revista Panamericana de Salud Pública 47 (January 30, 2023): 1. http://dx.doi.org/10.26633/rpsp.2023.35.

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Objective. To document the evolution of socioeconomic and geographical inequalities in childhood vaccination in Mexico from 2012 to 2021. Methods. Repeated cross-sectional analysis using three rounds of National Health and Nutrition Surveys (2012, 2018, and 2021). Dichotomous variables were created to identify the proportion of children who received no dose of each vaccine included in the national immunization schedule (BCG; diphtheria, pertussis, and tetanus-containing; rotavirus; pneumococcal conjugate; and measles, mumps, and rubella [MMR]), and the proportion completely unvaccinated. The d

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Goyal, Alisha, Jyoti Rozra, Isha Saini, Pawan K. Sharma, and Annu Sharma. "Refractive Index Tailoring of Poly(methylmethacrylate) Thin Films by Embedding Silver Nanoparticles." Advanced Materials Research 585 (November 2012): 134–38. http://dx.doi.org/10.4028/www.scientific.net/amr.585.134.

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Nanocomposite films of Poly (methylmethacrylate) with different concentration of silver nanoparticles were prepared by ex-situ method. Firstly, silver nanoparticles were obtained by reducing the aqueous solution of silver nitrate with sodium borohydride then Ag-PMMA films were prepared by mixing colloidal solution of silver nanoparticles with solution of polymer. Thin solid films were structurally characterized using UV-VIS spectroscopy and TEM. The appearance of surface plasmon resonance peak, characteristic of silver nanoparticles at 420 nm in UV-VIS absorption spectra of Ag-PMMA films confi

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Goryachev, Andrey, Leila Urusova, Taisiya Kabakova, et al. "Research of the dynamics of wholesale segment concentration level in the regional pharmaceutical market." Pharmacia 71 (October 15, 2024): 1–8. http://dx.doi.org/10.3897/pharmacia.71.e125385.

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Introduction: The study of the competitive environment in the pharmaceutical market is an element of the analysis of the drug supply system. The purpose of the study is to analyze the dynamics of concentration levels in the wholesale segment of the regional pharmaceutical market. Materials and methods: Data on market shares of key players were collected and summarized based on the executed contracts (461 contracts in total) for the supply of pharmaceutical products in the model region. For the competitive analysis of pharmaceutical distributors, the Herfindahl-Hirschman Index (HHIn) calculatio

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