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Journal articles on the topic 'Drinking free equilibrium'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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1

Isaac, Kwasi Adu, AL-Rahman EL-Nor Osman Mojeeb, and Yang Cuihong. "Mathematical Model of Drinking Epidemic." British Journal of Mathematics & Computer Science 22, no. 5 (2017): 1–10. https://doi.org/10.9734/BJMCS/2017/33659.

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A non-linear mathematical model was used to study the dynamics of drinking epidemic. We discussed the existence and stability of the drinking-free and endemic equilibria. The drinking-free equilibrium was locally asymptotically stable if and unstable if . Global stability of drinking-free and endemic equilibria were also considered in the model, using Lassalle’s invariance principle of Lyapunov functions. Numerical simulations were conducted to confirm our analytic results. Our findings was that, reducing the contact rate between the non-drinkers and heavy drinkers, increasing the number of dr
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2

Khajji, Bouchaib, Abderrahim Labzai, Omar Balatif, and Mostafa Rachik. "Mathematical Modeling and Analysis of an Alcohol Drinking Model with the Influence of Alcohol Treatment Centers." International Journal of Mathematics and Mathematical Sciences 2020 (February 10, 2020): 1–12. http://dx.doi.org/10.1155/2020/4903168.

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In this paper, we present a continuous mathematical model PMHTrTpQ of alcohol drinking with the influence of private and public addiction treatment centers. We study the dynamical behavior of this model and we discuss the basic properties of the system and determine its basic reproduction number R0. We also study the sensitivity analysis of model parameters to know the parameters that have a high impact on the reproduction number R0. The stability analysis of the model shows that the system is locally as well as globally asymptotically stable at drinking-free equilibrium E0 when R0≤1. When R0&
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3

Li, Ming-Tao, Gui-Quan Sun, Juan Zhang, and Zhen Jin. "Global Dynamic Behavior of a Multigroup Cholera Model with Indirect Transmission." Discrete Dynamics in Nature and Society 2013 (2013): 1–11. http://dx.doi.org/10.1155/2013/703826.

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For a multigroup cholera model with indirect transmission, the infection for a susceptible person is almost invariably transmitted by drinking contaminated water in which pathogens,V. cholerae, are present. The basic reproduction numberℛ0is identified and global dynamics are completely determined byℛ0. It shows thatℛ0is a globally threshold parameter in the sense that if it is less than one, the disease-free equilibrium is globally asymptotically stable; whereas if it is larger than one, there is a unique endemic equilibrium which is global asymptotically stable. For the proof of global stabil
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4

Huo, Hai-Feng, and Na-Na Song. "Global Stability for a Binge Drinking Model with Two Stages." Discrete Dynamics in Nature and Society 2012 (2012): 1–15. http://dx.doi.org/10.1155/2012/829386.

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A more realistic two-stage model for binge drinking problem is introduced, where the youths with alcohol problems are divided into those who admit the problem and those who do not admit it. We also consider the direct transfer from the class of susceptible individuals towards the class of admitting drinkers. Mathematical analyses establish that the global dynamics of the model are determined by the basic reproduction number,R0. The alcohol-free equilibrium is globally asymptotically stable, and the alcohol problems are eliminated from the population ifR0<1. A unique alcohol-present equilibr
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5

Alvarez-Bastida, C., M. Solache-Ríos, I. Linares-Hernández, et al. "Estimation and impact of carbon dioxide capture on drinking water: Tillmans equilibrium diagram." Journal of Water and Climate Change 11, no. 2 (2019): 380–89. http://dx.doi.org/10.2166/wcc.2019.038.

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Abstract The increase of CO2 in the atmosphere may produce some effects on drinking water because water tends to naturally capture CO2 species. The main purpose was the study of the impact of capture of free CO2 and its transformation to carbonic acid (H2CO3) and bicarbonate ions (HCO−3). The study used a Tillmans equilibrium diagram obtained from the modified Mojmir Mach model as a function of water temperature and considered the effects on anion and cation composition. Three wells located in different zones were selected, with similar characteristics (capture of CO2). Samples were taken in d
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6

Khajji, B., L. Boujallal, M. Elhia, O. Balatif, and M. Rachik. "A fractional-order model for drinking alcohol behaviour leading to road accidents and violence." Mathematical Modeling and Computing 9, no. 3 (2022): 501–18. http://dx.doi.org/10.23939/mmc2022.03.501.

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In this paper, we propose a new fractional-order model of alcohol drinking involving the Caputo derivative and six groups of individuals. We introduce road accidents and violence related to alcohol consumption as separate classes to highlight the role of alcoholism in the aggressive and risky behaviour of heavy drinkers. We show the existence and uniqueness of the non-negative solutions, and we determine the basic reproduction number R0. The sensitivity analysis of the model parameters is performed to characterize the important parameters that have the most effects on the reproduction number.
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7

Pérez, Edgardo. "Mathematical Modeling of the Spread of Alcoholism Among Colombian College Students." Ingeniería y Ciencia 16, no. 32 (2020): 195–223. http://dx.doi.org/10.17230/ingciencia.16.32.9.

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In this paper, we present a nonlinear mathematical model, describing the spread of high-risk alcohol consumption behavior among college students in Colombia. We proved the existence and stability of the alcohol-free and drinking state equilibrium by means of Lyapunov function and LaSalle’s invariance principle. Also, we apply optimal control to study the impact of a preventive measure on the spread of drinking behavior among college students. Finally, we use numerical simulations and available data provided by the United Nations Office on Drugs and Crime (UNODC) and the Colombian Ministry of J
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8

Choudhary, Anurag, Sardaar Singh Poonia, and Anurag kadawasara. "Kinetic, Equilibrium and Thermodynamic Study for Adsorptive Detoxification of Pb+2 by Thiocarbamoyl Chitosan." Current World Environment 18, no. 2 (2023): 559–70. http://dx.doi.org/10.12944/cwe.18.2.11.

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The environmental effect of industrial effluents, including chromium (Cr), lead (Pb), mercury (Hg), copper (Cu), and nickel (Ni) can have harmful impacts, which includes soil, water, and air pollution, bioaccumulation in food chains, degradation of ecosystems, loss of biodiversity, and contaminated drinking water. Biopolymers such as chitosan have been widely used in wastewater treatment. The ability of thiocarbamoyl chitosan to remove lead ions was assessed by combining thio urea and glutaraldehyde (GLA). During the first two hours of interaction with sorbent, 86% of the metal ions were shown
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9

Cheneke, Kumama Regassa, Koya Purnachandra Rao, and Geremew Kenassa Edessa. "Application of a New Generalized Fractional Derivative and Rank of Control Measures on Cholera Transmission Dynamics." International Journal of Mathematics and Mathematical Sciences 2021 (November 2, 2021): 1–9. http://dx.doi.org/10.1155/2021/2104051.

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In this study, the mathematical model of the cholera epidemic is formulated and analyzed to show the impact of Vibrio cholerae in reserved freshwater. Moreover, the results obtained from applying the new fractional derivative method show that, as the order of the fractional derivative increases, cholera-preventing behaviors also increase. Also, the finding of our study shows that the dynamics of Vibrio cholerae can be controlled if continuous treatment is applied in reserved freshwater used for drinking purposes so that the intrinsic growth rate of Vibrio cholerae in water is less than the nat
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10

Imken, Ikram, and Nadia Fatmi. "Association Between Alcohol Consumption and Hypertension Risk in Adults with Type 2 Diabetes: Insights from a Population-Based Study." American Journal of Applied Mathematics 12, no. 6 (2024): 266–85. https://doi.org/10.11648/j.ajam.20241206.16.

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Hypertension, or high blood pressure, is a chronic condition where blood pressure in the arteries remains elevated, leading to severe complications such as heart disease, stroke, and kidney failure. Managing hypertension is particularly challenging when comorbid conditions like type 2 diabetes are present. This paper investigates the combined impact of type 2 diabetes and alcohol consumption on hypertension progression using a deterministic mathematical model. We analyze the model’s dynamics, calculate the basic reproduction number (<i>R</i><sub>0&
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11

Belhamdi, Badreddine, Zoulikha Merzougui, Hamza Laksaci, Chemseddine Belabed, Salim Boudiaf, and Mohamed Trari. "Removal of dissolved organic nitrogen amino acid from aqueous solutions using activated carbon based on date pits." Water Practice and Technology 15, no. 4 (2020): 1158–73. http://dx.doi.org/10.2166/wpt.2020.089.

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Abstract Nitrogenous disinfection by-products (N-DBPs) in chlorinated drinking water are receiving increasing attention due to their elevated toxicities. An effective strategy to control N-DBP formation is to reduce their nitrogenous precursors (amino acids) before disinfection. This work was undertaken to study free amino acid l-tyrosine adsorption onto two activated carbons synthesized from date pits. The amino acid is plentiful in low-molecular weight algal organic matter, which helps the formation of nitrogenous and carbonaceous disinfection by-products during water treatment. The equilibr
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12

Ibrahim Hamadamin, Shireen. "Effect of the dried limes (Citrus aurantifolia) on the caffeine kinetic extraction in black tea leaves (kinetic and thermodynamic study)." Bulletin of the Chemical Society of Ethiopia 36, no. 3 (2022): 697–705. http://dx.doi.org/10.4314/bcse.v36i3.18.

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ABSTRACT. The kinetic and thermodynamic parameters were studied for the extraction of caffeine in black tea leaves and tea leaves containing antioxidant dried limes (Citrus aurantifolia). Caffeine is widely used in human consumption and is present in any liquid suitable for drinking except water. However, the health and environmental demerits make it significant to reduce caffeine to much less concentration or decaffeination. Therefore, the effect of the dried antioxidant Citrus aurantifolia on caffeine concentration followed by pseudo-first-order reaction, kinetic parameters (pseudo-first-ord
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13

Ojurongbe, Taiwo A., Akintunde L. Ayuba, Habeeb A. Afolabi, and Kehinde A. Bashiru. "Modeling the Potential Effect of Media Campaigns in Controlling Typhoid Fever." Pan African Journal of Life Sciences 7, no. 1 (2023): 622–30. http://dx.doi.org/10.36108/pajols/3202/70.0170.

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Background: Typhoid fever, caused by Salmonella typhi, is still a serious problem in many developing countries. It is spread by eating or drinking food or water contaminated with the faeces of an infected person. Risk factors include poor sanitation and poor hygiene. This study presented a mathematical model with a media campaign component to evaluate the possible impact of media campaigns on typhoid fever awareness. Methods: Sixty-four We proposed a model based on the transmission dynamics of Typhoid disease, emphasizing the cumulative density of awareness programs for the disease. The total
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14

Chubar, Natalia. "New inorganic (an)ion exchangers with a higher affinity for arsenate and a competitive removal capacity towards fluoride, bromate, bromide, selenate, selenite, arsenite and borate." Water Supply 11, no. 5 (2011): 505–15. http://dx.doi.org/10.2166/ws.2011.080.

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Highly selective materials and effective technologies are needed to meet the increasingly stronger drinking water standards for targeted ionic species. Inorganic ion exchangers based on individual and mixed-metal hydrous oxides (or mixed adsorbents that contain inorganic ion exchangers in their composition) are adsorptive materials that are capable of lowering the concentrations of anionic contaminants, such as H2AsO4−, H3AsO3, F−, Br−, BrO3−, HSeO4−, HSeO3− and H3BO3, to 10 μg/L or less. To achieve a higher selectivity towards arsenate, a new ion exchanger based on Mg–Al hydrous oxides was de
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15

El-Aassar, Mohamed R., Ahmed K. Alezbaway, Ibrahim O. Althobaiti, et al. "Fabrication of Novel Bentonite-Anthracite@Zetag (BT-An@Zetag) Composite for the Removal of Arsenic (V) from an Aqueous Solution." Molecules 27, no. 21 (2022): 7635. http://dx.doi.org/10.3390/molecules27217635.

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The arsenic (As) pollution of water has been eliminated via intensive scientific efforts, with the purpose of giving safe drinking water to millions of people across the world. In this study, the adsorption of As(V) from a synthetic aqueous solution was verified using a Bentonite-Anthracite@Zetag (BT-An@Zetag) composite. The SEM, FT-IR, XRD, DSC, TGA, and SBET techniques were used to characterize the (BT-An@Zetag) composite. The adsorption of As(V) was explored using batch adsorption under varied operating scenarios. Five kinetic modelswere used to investigate kinetic data, whereas three isoth
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16

Nikić, Jasmina, Malcolm Watson, Jovana Jokić Govedarica, et al. "Adsorption Performance of Fe–Mn Polymer Nanocomposites for Arsenic Removal: Insights from Kinetic and Isotherm Models." Materials 17, no. 20 (2024): 5089. http://dx.doi.org/10.3390/ma17205089.

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Global concern over arsenic contamination in drinking water necessitates innovative and sustainable remediation technologies. This study evaluates the adsorption performance of Fe–Mn binary oxide (FMBO) nanocomposites developed by coating polyethylene (PE) and polyethylene terephthalate (PET) with FMBO for the removal of As(III) and As(V) from water. Adsorption kinetics were rapid, with equilibrium achieved within 1–4 h depending on the material and pH. PET-FMBO and FMBO exhibited faster rates and higher arsenic removal (up to 96%) than PE-FMBO. Maximum As(III) adsorption capacities ranged fro
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17

Vicente-Martínez, Yésica, Moisés Ruiz-Mendieta, Manuel Caravaca-Garratón, Manuel Hernández-Córdoba, and Ignacio López-García. "Fast Procedure for Removing Silver Species in Waters Using a Simple Magnetic Nanomaterial." Separations 10, no. 7 (2023): 398. http://dx.doi.org/10.3390/separations10070398.

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The increase in the production and use of disinfectants containing silver atoms (in both its ionic and nanomeric forms) in their formulation, due to the global pandemic situation caused by COVID-19, has increased the presence of silver species in wastewater. Moreover, silver atoms are now considered as emerging pollutants in water. In this work, we propose a novel method for the instantaneous and simultaneous removal of ionic and nanomeric silver in water samples, using a previously unpublished methodology consisting of the in situ formation of magnetic nanoparticles in the aqueous samples to
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18

Wang, Zhe, Jiang Li, Li Lu, Jianwen Cao, Liangjie Zhao, and Song Luan. "Source, Partition and Ecological Risk of Polycyclic Aromatic Hydrocarbons in Karst Underground River Environment, Southern China." Water 13, no. 19 (2021): 2655. http://dx.doi.org/10.3390/w13192655.

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As the main source of drinking water in the karst areas of southern China, underground rivers play an important supporting role in local economic and social development. However, due to the special aquifer structure in the karst areas of southern China, polycyclic aromatic hydrocarbons (PAHs) can easily enter the water environment of underground rivers and cause serious pollution, which will affect the water quality safety. In this study, Qing-shui Spring underground river in Nanning city was selected as a representative of the typical underground river in southern China, and the pollution cha
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19

Huo, Hai-Feng, and Qian Wang. "Modelling the Influence of Awareness Programs by Media on the Drinking Dynamics." Abstract and Applied Analysis 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/938080.

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We develop a nonlinear mathematical model with the effect of awareness programs on the binge drinking. Due to the fact that awareness programs are capable of inducing behavioral changes in nondrinkers, we introduce a separate class by avoiding contacts with the heavy drinkers. Furthermore we assume that cumulative density of awareness programs increases at a rate proportional to the number of heavy drinkers. We establish some sufficient conditions for the stability of the alcohol free and the alcohol present equilibria and give some numerical simulations to explain our main result. Our results
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20

Bhandari, Sudhir, Ajit Singh Shaktawat, Bhoopendra Patel, et al. "The sequel to COVID-19: the antithesis to life." Journal of Ideas in Health 3, Special1 (2020): 205–12. http://dx.doi.org/10.47108/jidhealth.vol3.issspecial1.69.

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The pandemic of COVID-19 has afflicted every individual and has initiated a cascade of directly or indirectly involved events in precipitating mental health issues. The human species is a wanderer and hunter-gatherer by nature, and physical social distancing and nationwide lockdown have confined an individual to physical isolation. The present review article was conceived to address psychosocial and other issues and their aetiology related to the current pandemic of COVID-19. The elderly age group has most suffered the wrath of SARS-CoV-2, and social isolation as a preventive measure may furth
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21

RAJPUT, ASHUTOSH, and Rajiv Aggarwal. "A FRACTIONAL ORDER AGE-STRUCTURED MODEL TO STUDY THE EFFECT OF SOCIAL AWARENESS ON ALCOHOL CONSUMPTION." Physica Scripta, February 28, 2025. https://doi.org/10.1088/1402-4896/adbb91.

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Abstract Substance abuse is a widespread societal issue that transcends class boundaries, significantly influencing various facets of life. Consuming alcohol is linked to an elevated risk of non- infectious diseases, including liver disorders, cardiovascular conditions, diverse cancer types, and certain communicable diseases rooted in immune system impairment, such as HIV. Accordingly, we have developed a nonlinear mathematical model to explore alcohol consumption, incorporating the novel fractional-order derivative in the Caputo sense to determine the impact of the memory effect on drinking b
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22

Nyaberi, H. O., and D. M. Malonza. "Mathematical Model of Cholera Transmission with Education Campaign and Treatment Through Quarantine." Journal of Advances in Mathematics and Computer Science, May 20, 2019, 1–12. http://dx.doi.org/10.9734/jamcs/2019/v32i330145.

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Cholera, a water-borne disease characterized by intense watery diarrhea, affects people in the regions with poor hygiene and untreated drinking water. This disease remains a menace to public health globally and it indicates inequity and lack of community development. In this research, SIQR-B mathematical model based on a system of ordinary differential equations is formulated to study the dynamics of cholera transmission with health education campaign and treatmentthrough quarantine as controls against epidemic in Kenya. The effective basic reproduction number is computed using the next genera
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23

Muchika, Celestine L., Samuel Apima, and Frankline Tireito. "Mathematical Modeling of Alcoholism Incorporating Media Awareness as an Intervention Strategy." Journal of Advances in Mathematics and Computer Science, October 27, 2022, 1–15. http://dx.doi.org/10.9734/jamcs/2022/v37i101714.

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Alcohol addiction is a phenomenon that has attracted the attention of numerous researchers and academics in a variety of professions due to its serious repercussion on all spheres of human life. Alcoholism is a common addiction in adults throughout the globe. Hence there is need to target efficient preventative and therapeutic measures.The impact of media awareness and treatment on the drinking behavior of various drinker classes is discussed in several mathematical models. Nevertheless, the impact of the exposed class of alcoholics on light and heavy drinkers in the presence of media awarenes
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24

Jackob, K. O. "Determination of the Equilibrium Point According to a Temporal Model of Rehydration in a Population with Cholera in Logistic Growth." Journal of Advances in Mathematics and Computer Science, January 21, 2020, 1–5. http://dx.doi.org/10.9734/jamcs/2019/v34i630231.

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Cholera is an infection of the small intestine of humans caused by a gram-negative bacterium called Vibrio cholerae. It is spread through eating food or drinking water contaminated with faeces from an infected person. It causes rapid dehydration and general body imbalance, and can lead to death since untreated individuals suer severely from diarrhea and vomiting. Its dynamics involves multiple interaction between the human host, the pathogen and the environment which contributes to both human to human and indirect environment to human transmission pathways. Rehydration is critical in reducing
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25

"Adsorption capacity of GAC pilot filter-adsorber and postfilter- adsorber for individual THMs from drinking water, Athens." Issue 1 13, no. 1 (2013): 50–58. http://dx.doi.org/10.30955/gnj.000698.

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Trihalomethanes are a major class of chlorination by-products in drinking water. They are formed
 when chlorine reacts with bromide (Br-) and natural organic matter (NOM) in source waters.
 Toxicology studies have shown all THMs to be carcinogenic or to cause adverse reproductive or
 developmental effects in laboratory animals. THMs are small volatile molecules, which are
 hydrophobic, non biodegradable and adsorbable on granular activated carbon (GAC).
 The objective of this pilot study is to evaluate the adsorption capacity for individual THMs of a GAC
 filter-a
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26

Chaysiri, Rujira, Garrick E. Louis, and Wirawan Chinviriyasit. "Modeling the health impact of water and sanitation service deficits on waterborne disease transmission." Advances in Difference Equations 2021, no. 1 (2021). http://dx.doi.org/10.1186/s13662-021-03556-w.

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AbstractCholera is a waterborne disease that continues to pose serious public health problems in many developing countries. Increasing water and sanitation coverage is a goal for local authorities in these countries, as it can eliminate one of the root causes of cholera transmission. The SIWDR (susceptible–infected–water–dumpsite–recovered) model is proposed here to evaluate the effects of the improved coverage of water and sanitation services in a community at risk of a cholera outbreak. This paper provides a mathematical study of the dynamics of the water and sanitation (WatSan) deficits and
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27

Abbas, Moussa, and Mohamed Trari. "Mass transfer process in the removal of Congo Red (CR) onto Natural Clay (NC): kinetic, isotherm modeling, and thermodynamic study." Journal of Water and Climate Change, August 9, 2023. http://dx.doi.org/10.2166/wcc.2023.103.

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Abstract Industrial growth and technological advancement have led to the worldwide introduction of pollutants of diverse nature into water bodies including pollutants such as dyes and organic contaminants. Their presence in industrial effluents or drinking water is a public health problem. The aim of this study was to evaluate the adsorption of Congo Red (CR) onto Natural Clay (NC) realized in a batch system. The effects of contact time, initial pH, stirring speed, temperature, adsorbent dose, and initial CR concentration on the adsorption capacity were investigated for determining optimum con
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28

"Pilot study of the removal of individual trihalomethanes (THMs) from chlorinated drinking water by GAC adsorption - Galatsi water treatment plant, Athens, Greece." Issue 4 15, no. 4 (2013): 504–12. http://dx.doi.org/10.30955/gnj.000825.

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<p>The objective of this pilot study was to evaluate the performance of Powdered Activated Carbon (PAC) for the removal of individual trihalomethanes (THMs) from chlorinated drinking water, Athens, Greece. The pilot treatment facility was located at the Water Treatment Plant of EYDAP (Athens Water Supply and Sewerage Company) in Galatsi, Athens, and consisted of two mixing tanks operating as open batch reactors, which were fed with chlorinated water from the overflow of the sedimentation tanks. Experimental cycles were performed, with different PAC doses ranging from 5 to 50 mg L-1 and w
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29

Alfwzan, Wafa F., Dumitru Baleanu, Ali Raza, Muhammad Rafiq, and Nauman Ahmed. "Dynamical analysis of a class of SEIR models through delayed strategies." AIP Advances 13, no. 7 (2023). http://dx.doi.org/10.1063/5.0159942.

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In recent decades, the mathematical modeling of infectious diseases, real-world problems, non-linear dynamical complex systems, etc., has increased significantly. According to World Health Organization, tobacco use is the cause of about 22% of cancer deaths. Another 10% are due to obesity, poor diet, lack of physical activity, and excessive drinking of alcohol. Approximately 5%–10% of cancers are due to inherited genetic defects. The objective is to investigate the impact of time delays in implementing control measures on the epidemic dynamics. The classification of cell population has four co
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Mosa, Abdulaziz, Harald Grethe, and Khalid Siddig. "Economy-wide effects of reducing the time spent for water fetching and firewood collection in Ethiopia." Environmental Systems Research 9, no. 1 (2020). http://dx.doi.org/10.1186/s40068-020-00189-y.

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Abstract Background Water fetching and firewood collection are among home activities that are part of the daily routine of many households in rural Ethiopia. Households travel long distances and spend large amounts of time every day for collecting water and firewood. Fetching water and firewood reduce labor available for market related activities such as agriculture that affects production and productivity of these sectors negatively. Better access to water facility and energy efficient technology (such as improved stoves) is expected to release labor for market related activities that can hav
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31

Stevens, Carolyn Shannon. "Cute But Relaxed: Ten Years of Rilakkuma in Precarious Japan." M/C Journal 17, no. 2 (2014). http://dx.doi.org/10.5204/mcj.783.

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Introduction Japan has long been cited as a major source of cute (kawaii) culture as it has spread around the world, as encapsulated in Christine R. Yano’s phrase ‘Pink Globalization’. This essay charts recent developments in Japanese society through the cute character Rilakkuma, a character produced by San-X (a competitor to Sanrio, which produces the famed Hello Kitty). His name means ‘relaxed bear’, and Rilakkuma and friends are featured in comics, games and other products, called kyarakutā shōhin (also kyarakutā guzzu, which both mean ‘character goods’). Rilakkuma is pictured relaxing, sle
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