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51 Results Found

  • Feature Paper
  • Article
  • Open Access
4 Citations
3,338 Views
17 Pages

26 June 2021

Many polymer-made objects show a trend of melting and dripping in fire, a behavior that may be modified by adding flame retardants (FRs). These affect materials properties, e.g., heat absorption and viscosity. In this paper, the effect of a flame ret...

  • Article
  • Open Access
10 Citations
5,357 Views
22 Pages

Analysis of the Fire Behavior of Polymers (PP, PA 6 and PE-LD) and Their Improvement Using Various Flame Retardants

  • Dieter Hohenwarter,
  • Hannelore Mattausch,
  • Christopher Fischer,
  • Matthias Berger and
  • Bernd Haar

16 December 2020

The fire behavior of polymers is examined primarily with the time-dependent heat release rate (HRR) measured with a cone calorimeter. The HRR is used to examine the fire behavior of materials with and without flame retardants, especially Polypropylen...

  • Article
  • Open Access
73 Citations
9,096 Views
26 Pages

Influence of Flame Retardants on the Melt Dripping Behaviour of Thermoplastic Polymers

  • Melissa Matzen,
  • Baljinder Kandola,
  • Christian Huth and
  • Bernhard Schartel

27 August 2015

Melt flow and dripping of the pyrolysing polymer melt can be both a benefit and a detriment during a fire. In several small-scale fire tests addressing the ignition of a defined specimen with a small ignition source, well-adjusted melt flow and dripp...

  • Feature Paper
  • Review
  • Open Access
145 Citations
12,903 Views
32 Pages

Recent Developments in Organophosphorus Flame Retardants Containing P-C Bond and Their Applications

  • Sophie Wendels,
  • Thiebault Chavez,
  • Martin Bonnet,
  • Khalifah A. Salmeia and
  • Sabyasachi Gaan

11 July 2017

Organophosphorus compounds containing P-C bonds are increasingly developed as flame retardant additives due to their excellent thermal and hydrolytic stability and ease of synthesis. The latest development (since 2010) in organophosphorus flame retar...

  • Article
  • Open Access
3 Citations
1,058 Views
18 Pages

5 June 2025

In this study, a flame-retardant wood-polymer composite was produced using huntite-hydromagnesite mineral, recognized for its non- flammability properties. In this context, wood-polymer composites were produced with the co-rotating twin-screw extrusi...

  • Article
  • Open Access
188 Citations
15,459 Views
21 Pages

20 November 2014

Thermally reduced graphite oxide (TRGO), containing only four single carbon layers on average, was combined with ammonium polyphosphate (APP) and magnesium hydroxide (MH), respectively, in polypropylene (PP). The nanoparticle’s influence on different...

  • Article
  • Open Access
26 Citations
3,370 Views
13 Pages

Polycarbonate/Sulfonamide Composites with Ultralow Contents of Halogen-Free Flame Retardant and Desirable Compatibility

  • Hangfeng Yang,
  • Hangbo Yue,
  • Xi Zhao,
  • Minzimo Song,
  • Jianwei Guo,
  • Yihua Cui,
  • Juan P. Fernández-Blázquez and
  • De-Yi Wang

19 August 2020

A novel halogen-free flame retardant containing sulfonamide, 1,3,5,7-tetrakis (phenyl-4-sulfonamide) adamantane (FRSN) was synthesized and used for improving the flame retardancy of largely used polycarbonate (PC). The flame-retardant properties of t...

  • Article
  • Open Access
30 Citations
5,711 Views
15 Pages

Some Key Factors Influencing the Flame Retardancy of EDA-DOPO Containing Flexible Polyurethane Foams

  • Agnieszka Przystas,
  • Milijana Jovic,
  • Khalifah A. Salmeia,
  • Daniel Rentsch,
  • Laurent Ferry,
  • Henri Mispreuve,
  • Heribert Perler and
  • Sabyasachi Gaan

9 October 2018

The role of various additives (emulsifier, anti-dripping agent) and formulation procedures (pre-dispersion of solid additives in polyol via milling) which influence the flame retardancy of 6,6′-[ethan-1,2-diylbis(azandiyl)]bis(6H-dibenzo[c,e][1...

  • Article
  • Open Access
19 Citations
4,210 Views
11 Pages

Pemafibrate Ameliorates Liver Dysfunction and Fatty Liver in Patients with Non-Alcoholic Fatty Liver Disease with Hypertriglyceridemia: A Retrospective Study with the Outcome after a Mid-Term Follow-Up

  • Suguru Ikeda,
  • Takaaki Sugihara,
  • Takuya Kihara,
  • Yukako Matsuki,
  • Takakazu Nagahara,
  • Tomoaki Takata,
  • Sonoko Kitao,
  • Tsuyoshi Okura,
  • Kazuhiro Yamamoto and
  • Hajime Isomoto

9 December 2021

Non-alcoholic fatty liver disease (NAFLD) is a chronic liver disease related to metabolic syndrome. No standard pharmacological treatment has yet been established. We retrospectively evaluated the efficacy of pemafibrate in 16 NAFLD patients (11 men...

  • Article
  • Open Access
10 Citations
7,573 Views
15 Pages

25 July 2021

Fish scales (FSs) are fishery wastes that can cause environmental pollution. This study aimed to solve this environmental problem. FSs were used as a flame retardant for polymer materials, making them valuable. Fish scales were combined with a commer...

  • Article
  • Open Access
1 Citations
2,264 Views
12 Pages

18 February 2024

Aluminum butylmethylphosphinate AiBMP as a flame retardant and phenolphthalein as a synergistic agent were applied in a thermoplastic polyester elastomer (TPEE)) in the current study. The thermal properties, flame retardancy, crystallization and mech...

  • Article
  • Open Access
11 Citations
6,711 Views
14 Pages

11 December 2019

In this paper an experimental investigation on fire retardancy of a new polymer nanocomposite derived from organic montmorillonite and exolit fire retardant in an acrylonitrile- butadiene-styrene copolymer by analyzing the flammability and fire behav...

  • Article
  • Open Access
30 Citations
8,555 Views
17 Pages

Halogen-Free Flame-Retardant Compounds. Thermal Decomposition and Flammability Behavior for Alternative Polyethylene Grades

  • Adriaan Stephanus Luyt,
  • Sarah Shahid Malik,
  • Soumia Abderrazak Gasmi,
  • Athanasios Porfyris,
  • Anna Andronopoulou,
  • Dimitrios Korres,
  • Stamatina Vouyiouka,
  • Michael Grosshauser,
  • Rudolf Pfaendner and
  • Constantine Papaspyrides
  • + 1 author

10 September 2019

The effect of six halogen-free flame retardant (FR) formulations was investigated on the thermal stability of two low-density polyethylenes (LDPE) and one linear low-density polyethylene (LLDPE), by means of thermogravimetric analysis (TGA) under nit...

  • Article
  • Open Access
38 Citations
5,784 Views
15 Pages

Mechanistic Pathways Underlying the Antihypertensive Effect of Fermented Milk with Lactococcus lactis NRRL B-50571 in Spontaneously Hypertensive Rats

  • Lilia M. Beltrán-Barrientos,
  • Adrián Hernández-Mendoza,
  • Aarón F. González-Córdova,
  • Humberto Astiazarán-García,
  • Julián Esparza-Romero and
  • Belinda Vallejo-Córdoba

26 February 2018

It has been reported that fermented milk (FM) with Lactococcus lactis NRRL B-50571 had an antihypertensive effect in spontaneously hypertensive rats (SHR) and prehypertensive subjects. Therefore, the objective of the present study was to evaluate the...

  • Article
  • Open Access
30 Citations
4,361 Views
13 Pages

29 January 2020

A series of biobased phosphorus flame retardants has been prepared by converting starch-derived bis-2,5-(hydroxymethyl)furan to the corresponding diacrylate followed by Michael addition of phosphite to generate derivatives with phosphorus moieties at...

  • Article
  • Open Access
18 Citations
3,943 Views
13 Pages

30 March 2023

A high-phosphorus-content polyphosphonate (PBDA), containing two phosphorus-based structures: phosphaphenanthrene (DOPO) and phenyl phosphonate groups, was synthesized and used in flame retardant polyethylene terephthalate (PET). Good self-extinguish...

  • Article
  • Open Access
6 Citations
2,307 Views
11 Pages

Polybenzoxazine/Epoxy Copolymer Reinforced with Phosphorylated Microcrystalline Cellulose: Curing Behavior, Thermal, and Flame Retardancy Properties

  • Wissam Bessa,
  • Djalal Trache,
  • Sid-Ali Moulai,
  • Ahmed Fouzi Tarchoun,
  • Amir Abdelaziz,
  • Tuan Sherwyn Hamidon and
  • Mohd Hazwan Hussin

31 July 2024

This study aims to explore new flame-retardant composites based on a phosphorus-functionalized cellulose derivative and epoxy/benzoxazine thermosetting resins in order to broaden the use of natural fibers in advanced applications. The study involved...

  • Article
  • Open Access
1,110 Views
15 Pages

A Preliminary Investigation on the Thermal Behavior of Polysaccharides-Modified Casein

  • Maria R. Ricciardi,
  • Marco Russo,
  • Vincenza Antonucci,
  • Lorena Affatato and
  • Antonio Langella

The effective use of natural casein-based adhesives requires the reduction of shrinkage phenomena associated with the evaporation of water, which is largely used for preparation. After the procedure optimization of a casein natural glue by aid of an...

  • Article
  • Open Access
42 Citations
5,167 Views
14 Pages

7 March 2020

In this work, functionalized multi-walled carbon nanotubes (MWCNT) were synthesized by the reaction between acylated MWCNT and 10-(2,5-dihydroxyphenyl)-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (ODOPB). The obtained MWCNT-ODOPB was well disp...

  • Communication
  • Open Access
730 Views
12 Pages

Research on Fireproof and Anti-Corrosion Integrated Coatings for Modular Integrated Buildings

  • Song Liu,
  • Jun Guan,
  • Zhiheng Ma,
  • Qi Sun,
  • Kai Li and
  • Zhiyong Wang

29 October 2025

With the development of prefabricated buildings, the challenge of integrating fireproofing and anti-corrosion in steel structures has become increasingly prominent. Based on epoxy resin, we developed a multifunctional coating with high-flame retardan...

  • Article
  • Open Access
3 Citations
3,090 Views
12 Pages

Preparation and Properties of Flame-Retardant Polyurethane Pressure Sensitive Adhesive and Its Application

  • Lijuan Zeng,
  • Liu Yang,
  • Junbang Liu,
  • Shangkai Lu,
  • Lianghui Ai,
  • Yang Dong,
  • Zhibin Ye and
  • Ping Liu

16 February 2023

Using 10-(2,5-dihydroxyphenyl)-10-hydrogen-9-oxo-10-phosphine-10-oxide (DOPO-H Q), N,N-diethyl-bis(hydroxyethyl) aminomethylene phosphate diethyl (FRC-6), and (6-oxo- 6H-dibenzo[c,e][1,2]oxphosphine-6-yl) hydroxylmethyl-thiophene (DOPO-SF) as reactiv...

  • Article
  • Open Access
19 Citations
3,543 Views
15 Pages

23 September 2021

A novel diaminodiphenylmethane (DDM) modified ammonium polyphosphate (APP) flame retardant, DDP, was successfully synthesized via ion-exchange reaction. DDP was introduced into epoxy resins (EPs) to reduce flammability. A comparable level of DDP exer...

  • Article
  • Open Access
2 Citations
2,037 Views
17 Pages

New Fire-Retardant Open-Cell Composite Polyurethane Foams Based on Triphenyl Phosphate and Natural Nanoscale Additives

  • Kirill Cherednichenko,
  • Egor Smirnov,
  • Maria Rubtsova,
  • Dmitrii Repin and
  • Anton Semenov

19 June 2024

Despite the mechanical and physical properties of polyurethane foams (PUF), their application is still hindered by high inflammability. The elaboration of effective, low-cost, and environmentally friendly fire retardants remains a pressing issue that...

  • Article
  • Open Access
19 Citations
5,648 Views
18 Pages

26 February 2024

Currently, the mechanical performance reduction caused by excessive phosphorus content in the halogen-free flame-retardant EP has been an obstacle to its extensive application. This study presents the effective synthesis of a novel flame-retardant BD...

  • Article
  • Open Access
18 Citations
5,162 Views
14 Pages

28 November 2019

Three metal salts of dicyclohexyl hypophosphite, namely dicyclohexyl aluminum hypophosphite (ADCP), dicyclohexyl magnesium hypophosphite (MDCP), and dicyclohexyl zinc hypophosphite (ZDCP), were synthesized. These flame retardants were subjected to th...

  • Article
  • Open Access
10 Citations
2,723 Views
13 Pages

11 February 2022

A novel composite and functional micro-nanometer particle is designed by the hydrolysis of aluminium isopropoxide on the surface of ammonium polyphosphate (APP) to prepare surface nanostructured ammonium polyphosphate (NSAPP). NSAPP is characterised...

  • Article
  • Open Access
7 Citations
3,792 Views
15 Pages

Flame Retardancy and Mechanical Properties of Melt-Spun PA66 Fibers Prepared by End-Group Blocking Technology

  • Yanpeng Wu,
  • Tonghui Yang,
  • Yongchang Cheng,
  • Tao Huang,
  • Bin Yu,
  • Qilin Wu,
  • Meifang Zhu and
  • Hao Yu

26 February 2023

Preparing flame-retardant polyamide 66 (PA66) fibers through melt spinning remains one of the biggest challenges nowadays. In this work, dipentaerythritol (Di−PE), an eco-friendly flame retardant, was blended into PA66 to prepare PA66/Di−...

  • Review
  • Open Access
37 Citations
6,330 Views
11 Pages

15 December 2015

Polymeric materials often exhibit complex combustion behaviours encompassing several stages and involving solid phase, gas phase and interphase. A wide range of qualitative, semi-quantitative and quantitative testing techniques are currently availabl...

  • Article
  • Open Access
19 Citations
4,940 Views
17 Pages

2 March 2020

A zeolite imidazole framework (ZIF-67) was assembled onto the surface of ammonium polyphosphate (APP) for preparing a series multifunctional flame-retardant APP-ZIFs. The assembly mechanism, chemical structure, chemical compositions, morphology, and...

  • Article
  • Open Access
1 Citations
1,399 Views
19 Pages

23 March 2025

Unsaturated polyester (UP) resin is widely utilized in the construction and automotive industries. The flammable nature of UP must be constrained when its products are manufactured. A novel organic flame retardant has been synthesized from 9,10-dihyd...

  • Article
  • Open Access
9 Citations
3,038 Views
16 Pages

A Simple Risk Score Based on Routine Clinical Parameters Can Predict Frailty in Hospitalized Heart Failure Patients

  • Marta Kałużna-Oleksy,
  • Agata Kukfisz,
  • Jacek Migaj,
  • Magdalena Dudek,
  • Helena Krysztofiak,
  • Filip Sawczak,
  • Magdalena Szczechla,
  • Katarzyna Przytarska,
  • Ewa Straburzyńska-Migaj and
  • Izabella Uchmanowicz
  • + 1 author

19 December 2021

Frailty syndrome (FS) has recently attracted attention as one of the major predictors of heart failure (HF) course severity. We aimed to develop a simple tool for predicting frailty in hospitalized HF patients using routine clinical parameters. A tot...

  • Article
  • Open Access
30 Citations
4,533 Views
21 Pages

10 September 2021

This research aims to determine the mechanical properties of sugar palm fiber (Arenga pinnata Wurmb. Merr) (SPF)/glass fiber (GF)-reinforced poly(lactic acid) (PLA) hybrid composites for potential use in motorcycle components. The mechanical (hardnes...

  • Article
  • Open Access
5 Citations
2,758 Views
19 Pages

6 September 2022

In this study, the flame retardant effect of the Zn salt of 10-hydroxy-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (Zn-DOPOx), melamine polyphosphate (MPP) and their mixture was investigated towards the mode of action in glass fiber-reinforced...

  • Article
  • Open Access
10 Citations
2,244 Views
18 Pages

11 December 2023

Transparency is an important property for polymer flame retardants, especially epoxy resin (EP) flame retardants, and flame-retardant epoxy resins that maintain a high transparency and low chromatic aberration play important roles in the optical, lig...

  • Article
  • Open Access
9 Citations
4,223 Views
18 Pages

Ileal Bile Acid Transporter Blockers for Cholestatic Liver Disease in Pediatric Patients with Alagille Syndrome: A Systematic Review and Meta-Analysis

  • Hafiza Sidra tul Muntaha,
  • Mubashar Munir,
  • Syeda Haleema Sajid,
  • Zouina Sarfraz,
  • Azza Sarfraz,
  • Karla Robles-Velasco,
  • Muzna Sarfraz,
  • Miguel Felix and
  • Ivan Cherrez-Ojeda

19 December 2022

Alagille syndrome (ALGS) is a rare, debilitating inheritable disease that is associated with refractory pruritus due to chronic cholestasis. The following systemic review and meta-analysis presents the latest evidence for ileal bile acid transport (I...

  • Feature Paper
  • Article
  • Open Access
36 Citations
7,283 Views
22 Pages

15 June 2019

In this study, multicomponent flame retardant systems, consisting of ammonium polyphosphate (APP), aluminum trihydroxide (ATH), and polyaniline (PANI), were used in ethylene propylene diene monomer (EPDM) rubber. The multicomponent system was designe...

  • Article
  • Open Access
24 Citations
6,386 Views
18 Pages

Valorization of Industrial Lignin as Biobased Carbon Source in Fire Retardant System for Polyamide 11 Blends

  • Neeraj Mandlekar,
  • Aurélie Cayla,
  • François Rault,
  • Stéphane Giraud,
  • Fabien Salaün and
  • Jinping Guan

21 January 2019

In this study, two different types of industrial lignin (i.e., lignosulphonate lignin (LL) and kraft lignin (DL)) were exploited as charring agents with phosphorus-based flame retardants for polyamide 11 (PA11). The effect of lignins on the thermal s...

  • Article
  • Open Access
39 Citations
10,501 Views
17 Pages

Flame Retardancy of PA6 Using a Guanidine Sulfamate/Melamine Polyphosphate Mixture

  • Mathieu Coquelle,
  • Sophie Duquesne,
  • Mathilde Casetta,
  • Jun Sun,
  • Xiaoyu Gu,
  • Sheng Zhang and
  • Serge Bourbigot

13 February 2015

Polyamide 6 (PA6) is a widely-used polymer that could find applications in various sectors, including home textiles, transportation or construction. However, due to its organic nature, PA6 is flammable, and flame-retardant formulations have to be dev...

  • Article
  • Open Access
6 Citations
4,019 Views
13 Pages

Replacing Harmful Flame Retardants with Biodegradable Starch-Based Materials in Polyethylene Formulations

  • Bárbara O. Carvalho,
  • Luís P. C. Gonçalves,
  • Patrícia V. Mendonça,
  • João P. Pereira,
  • Arménio C. Serra and
  • Jorge F. J. Coelho

13 October 2023

The addition of toxic flame retardants to commercially available polymers is often required for safety reasons due to the high flammability of these materials. In this work, the preparation and incorporation of efficient biodegradable starch-based fl...

  • Article
  • Open Access
18 Citations
4,609 Views
16 Pages

3 January 2020

Enhancement of flame retardancy of a colorless and transparent semi-alicyclic polyimide (PI) film was carried out by the incorporation of phosphazene (PPZ) flame retardant (FR). For this purpose, PI-1 matrix was first synthesized from hydrogenated 3,...

  • Article
  • Open Access
15 Citations
3,446 Views
22 Pages

29 October 2020

Derivatives of 3,9-dichloro-2,4,8,10-tetraoxa-3,9-diphosphaspiro-[5,5]undecane-3,9-dioxide (SPDPC) are of increasing interest as flame retardants for polymeric materials. In addition, SPDPC is also an important intermediate for the preparation of int...

  • Article
  • Open Access
13 Citations
3,965 Views
17 Pages

21 October 2021

Recently, lots of effort has been placed into stabilizing black phosphorus (BP) in the air to improve its compatibility with polymers. Herein, BP was chemically functionalized by aliphatic amine (DETA), aromatic amine (PPDA) and cyclamine (Pid) via a...

  • Article
  • Open Access
7 Citations
2,354 Views
13 Pages

A Simple Prognostic Score for Critical COVID-19 Derived from Patients without Comorbidities Performs Well in Unselected Patients

  • Vasiliki E. Georgakopoulou,
  • Nikolaos I. Vlachogiannis,
  • Dimitrios Basoulis,
  • Irene Eliadi,
  • Georgios Georgiopoulos,
  • Georgios Karamanakos,
  • Sotiria Makrodimitri,
  • Stamatia Samara,
  • Maria Triantafyllou and
  • Nikolaos V. Sipsas
  • + 5 authors

25 March 2022

We aimed to search for laboratory predictors of critical COVID-19 in consecutive adults admitted in an academic center between 16 September 2020–20 December 2021. Patients were uniformly treated with low-molecular-weight heparin, and dexamethas...

  • Article
  • Open Access
7 Citations
4,966 Views
23 Pages

Shallow Water Bathymetry Inversion Based on Machine Learning Using ICESat-2 and Sentinel-2 Data

  • Mengying Ye,
  • Changbao Yang,
  • Xuqing Zhang,
  • Sixu Li,
  • Xiaoran Peng,
  • Yuyang Li and
  • Tianyi Chen

7 December 2024

Shallow water bathymetry is essential for maritime navigation, environmental monitoring, and coastal management. While traditional methods such as sonar and airborne LiDAR provide high accuracy, their high cost and time-consuming nature limit their a...

  • Article
  • Open Access
4 Citations
2,833 Views
33 Pages

Novel Macromolecular and Biobased Flame Retardants Based on Cellulose Esters and Phosphorylated Sugar Alcohols

  • Matay Kaplan,
  • Michael Ciesielski,
  • Sabine Fuchs,
  • Christoffer Getterle,
  • Frank Schönberger and
  • Rudolf Pfaendner

27 July 2023

The increasing demand to provide sustainably produced plastic materials requires, a.o., the development of biobased flame retardants (FRs) for applications where flame retardancy is essential. To meet those challenging new sustainability requirements...

  • Article
  • Open Access
11 Citations
2,641 Views
19 Pages

1 February 2024

Due to high filler loading, clean, commercial, thermoplastic, flame-retardant materials are mechanically unstable when insulating wires and cables. In this study, composite formulations of linear low-density polyethylene (LLDPE)/ethylene–vinyl...

  • Article
  • Open Access
28 Citations
5,716 Views
17 Pages

1 May 2019

A novel organic-inorganic hybrid containing allyl benzoxazine and polyhedral oligomeric silsesquioxane (POSS) was synthesized by the thiol-ene (click) reaction. The benzoxazine (BOZ)-containing POSS (SPOSS-BOZ) copolymerized with benzoxazine/epoxy re...

  • Article
  • Open Access
1 Citations
2,346 Views
13 Pages

Screening for Hypophosphatasia in Adult Patients at a Maximum Care Provider—Retrospective Analyses over Fifteen Years

  • Robert Hennings,
  • Diana Le Duc,
  • Linnaeus Bundalian,
  • Anke Tönjes,
  • Johannes R. Lemke,
  • Joachim Thiery,
  • Jürgen Kratzsch and
  • Andreas Roth

2 December 2024

Background/Objectives: Hypophosphatasemia (HPE) may be temporary (tHPE) in the context of severe diseases, such as sepsis or trauma, or it may persist (pHPE), indicating an adult form of hypophosphatasia (HPP; OMIM 171760), a rare metabolic bone diso...

  • Article
  • Open Access
3 Citations
3,231 Views
21 Pages

27 March 2024

The present work proposes to investigate the effect of an ultrahigh molecular weight silicone rubber (UHMW-SR) and two ethylene methyl acrylate copolymers (EMA) with different methyl acrylate (MA) content on the mechanical and fire performance of a f...

  • Article
  • Open Access
12 Citations
4,198 Views
15 Pages

Effect of Rice Husk and Wood Flour on the Structural, Mechanical, and Fire-Retardant Characteristics of Recycled High-Density Polyethylene

  • Atta Ur Rehman Shah,
  • Abdul Jalil,
  • Atiya Sadiq,
  • Meshal Alzaid,
  • Muhammad Shoaib Naseem,
  • Rakan Alanazi,
  • Sultan Alanazi,
  • Abdullatyf Obaid Alanzy,
  • Ibrahim Hotan Alsohaimi and
  • Rizwan Ahmed Malik

9 October 2023

Given the rising consumption of plastic products, it is becoming imperative to prioritize the recycling of plastic items as a solution to reducing plastic waste and environmental pollution. In this context, this research focuses on assessing the impa...

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