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Journal articles on the topic 'MULTI-DECONTAMINATION'

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Author: Grafiati

Published: 11 September 2023

Last updated: 16 April 2024

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1

Kiyok, O. V., N. V. Polupanova, N. O. Chernyaeva, L. V. Naprimerova, and E. Yu Enina. "Medical waste management in today’s healthcare: issues and progress." Kuban Scientific Medical Bulletin 29, no. 3 (June 28, 2022): 121–34. http://dx.doi.org/10.25207/1608-6228-2022-29-3-121-134.

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Background. In every region of the Russian Federation, medical waste management importantly relies on both safe and cost-effective decontamination.Objectives. The study aims to highlight the hygienic aspects of medical waste management in healthcare facilities of Krasnodar Krai and county-wide, as well as to prove the cost effectiveness of the physical decentralised decontamination/neutralisation method in a multi-specialty healthcare facility.Methods. A retrospective analysis of medical waste management over Krasnodar Krai and at a multi-specialty hospital has been conducted for period 2016–2018; cost effectiveness was calculated for the decentralised (physical) method of medical waste decontamination. Statistical analyses were performed with Statistica 10.Results. A high proportion of medical waste has been established for both Krasnodar Krai and country-wide. The cost effectiveness of the physical decentralised waste decontamination method has been demonstrated. The estimates with Ochapovsky Regional Clinical Hospital No. 1 Research Institute showed that a per-kilo deactivation cost for class B (epidemiological hazard) waste by a decentralised (physical) method is more effective amounting to average 38.42 ± 4.48 vs. 191.20 ± 20.46 (p < 0.01) for specialised commercial services of medical waste collection, transportation and neutralisation; the use of a reliable validated physical method warrants the staff epidemiological safety.Conclusion. The cost effectiveness of the physical decentralised method of medical waste decontamination/neutralisation has been demonstrated with a multi-specialty hospital. Better legal regulation and inter-department coordination of medical waste management will upgrade the disposal solutions to ensure compliance with epidemiological and environmental safety.

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2

Collins, Samuel, Thomas James, Holly Carter, Charles Symons, Felicity Southworth, Kerry Foxall, Tim Marczylo, and Richard Amlôt. "Mass Casualty Decontamination for Chemical Incidents: Research Outcomes and Future Priorities." International Journal of Environmental Research and Public Health 18, no. 6 (March 17, 2021): 3079. http://dx.doi.org/10.3390/ijerph18063079.

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Planning for major incidents involving the release of hazardous chemicals has been informed by a multi-disciplinary research agenda which has sought to inform all aspects of emergency response, but with a focus in recent years on mass casualty decontamination. In vitro and human volunteer studies have established the relative effectiveness of different decontamination protocols for a range of chemical agents. In parallel, a programme of research has focused on communicating with and managing large numbers of contaminated casualties at the scene of an incident. We present an accessible overview of the evidence underpinning current casualty decontamination strategies. We highlight where research outcomes can directly inform response planning, including the critical importance of beginning the decontamination process as soon as possible, the benefits of early removal of contaminated clothing, the evidence under-pinning dry and wet decontamination and how effective communication is essential to any decontamination response. We identify a range of priority areas for future research including establishing the significance of the ‘wash-in’ effect and developing effective strategies for the decontamination of hair. We also highlight several areas of future methodological development, such as the need for novel chemical simulants. Whilst considerable progress has been made towards incorporating research outcomes into operational policy and practice, we outline how this developing evidence-base might be used to inform future iterations of mass casualty decontamination guidance.

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Akhlaghpasand, Hossein, and S. Mohammad Razavizadeh. "Adaptive pilot decontamination in multi-cell massive MIMO networks." Telecommunication Systems 66, no. 3 (March 13, 2017): 515–22. http://dx.doi.org/10.1007/s11235-017-0302-7.

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4

Duca, Radu-Corneliu, Emilie Hardy, Guillaume Salquèbre, and Brice M. R. Appenzeller. "Hair decontamination procedure prior to multi-class pesticide analysis." Drug Testing and Analysis 6, S1 (May 9, 2014): 55–66. http://dx.doi.org/10.1002/dta.1649.

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5

PERIEANU, Viorel Ştefan, Mădălina PERIEANU, Mădălina MALIŢA, Mihai BURLIBAŞA, Radu COSTEA, Camelia IONESCU, Consuela GHIUŢĂ, Ileana IONESCU, and Liliana BURLIBAŞA. "Clinico-statistical study regarding prevention of infections in dental offices by impressions decontamination." Romanian Journal of Medical Practice 11, no. 1 (March 31, 2016): 58–64. http://dx.doi.org/10.37897/rjmp.2016.1.12.

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Objective. The purpose of the study is to evaluate the knowledge and universal application of decontamination methods of impressions in dental practices. Material and method. The study involved 131 persons (dentists and dental students at Faculty of Dental Medicine). All the participants completed a questionnaire regarding the knowledge of transmission risk and rates of infections agents through dental impressions and the importance of different methods of decontamination. Results. Most of the subjects (93.89%) are aware of classical safe standard to achieve infection control in dental office. The youngest ones are well instructed in dental school. Most of the participants concluded that ere is a risk of transmission of infectious agents through different devices (impressions, prosthetic components) are sent out of the practice. Still only 35.11% of the respondents use a decontamination process of impressions. Among these (46 subjects), only 25 of them follow a well-conducted decontamination protocol. Many of the subjects consider that the infections risk of dental devices is minor and the decontamination procedure only makes the technological process more difficult. Conclusions. Dental practitioners consider that there is a minor risk of person-to-person transmission of infectious through dental devices. Doctors and technicians as well do not use a multi-step process of decontamination, because it makes the workflow more difficult.

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Li, Qing, Zeng-Lu Fan, Dong-Xu Xue, Yu-Feng Zhang, Zong-Hui Zhang, Qian Wang, Hua-Ming Sun, Ziwei Gao, and Junfeng Bai. "A multi-dye@MOF composite boosts highly efficient photodegradation of an ultra-stubborn dye reactive blue 21 under visible-light irradiation." Journal of Materials Chemistry A 6, no. 5 (2018): 2148–56. http://dx.doi.org/10.1039/c7ta10184h.

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This study provides a new avenue to construct a novel multi-dye@MOF composite photocatalyst towards addressing some unresolved environmental issues, i.e. the decontamination of the ultra-stubborn dye RB21.

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7

Kelar Tučeková, Zlata, Lukáš Vacek, Richard Krumpolec, Jakub Kelar, Miroslav Zemánek, Mirko Černák, and Filip Růžička. "Multi-Hollow Surface Dielectric Barrier Discharge for Bacterial Biofilm Decontamination." Molecules 26, no. 4 (February 9, 2021): 910. http://dx.doi.org/10.3390/molecules26040910.

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The plasma-activated gas is capable of decontaminating surfaces of different materials in remote distances. The effect of plasma-activated water vapor on Staphylococcus epidermidis, methicillin-resistant Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli biofilm contamination was investigated on the polypropylene nonwoven textile surface. The robust and technically simple multi-hollow surface dielectric barrier discharge was used as a low-temperature atmospheric plasma source to activate the water-based medium. The germicidal efficiency of short and long-time exposure to plasma-activated water vapor was evaluated by standard microbiological cultivation and fluorescence analysis using a fluorescence multiwell plate reader. The test was repeated in different distances of the contaminated polypropylene nonwoven sample from the surface of the plasma source. The detection of reactive species in plasma-activated gas flow and condensed activated vapor, and thermal and electrical properties of the used plasma source, were measured. The bacterial biofilm decontamination efficiency increased with the exposure time and the plasma source power input. The log reduction of viable biofilm units decreased with the increasing distance from the dielectric surface.

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8

Ludwig-Begall, Louisa F., Constance Wielick, Olivier Jolois, Lorène Dams, Ravo M. Razafimahefa, Hans Nauwynck, Pierre-Francois Demeuldre, et al. "“Don, doff, discard” to “don, doff, decontaminate”—FFR and mask integrity and inactivation of a SARS-CoV-2 surrogate and a norovirus following multiple vaporised hydrogen peroxide-, ultraviolet germicidal irradiation-, and dry heat decontaminations." PLOS ONE 16, no. 5 (May 19, 2021): e0251872. http://dx.doi.org/10.1371/journal.pone.0251872.

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Background As the SARS-CoV-2 pandemic accelerates, the supply of personal protective equipment remains under strain. To combat shortages, re-use of surgical masks and filtering facepiece respirators has been recommended. Prior decontamination is paramount to the re-use of these typically single-use only items and, without compromising their integrity, must guarantee inactivation of SARS-CoV-2 and other contaminating pathogens. Aim We provide information on the effect of time-dependent passive decontamination (infectivity loss over time during room temperature storage in a breathable bag) and evaluate inactivation of a SARS-CoV-2 surrogate and a non-enveloped model virus as well as mask and respirator integrity following active multiple-cycle vaporised hydrogen peroxide (VHP), ultraviolet germicidal irradiation (UVGI), and dry heat (DH) decontamination. Methods Masks and respirators, inoculated with infectious porcine respiratory coronavirus or murine norovirus, were submitted to passive decontamination or single or multiple active decontamination cycles; viruses were recovered from sample materials and viral titres were measured via TCID50 assay. In parallel, filtration efficiency tests and breathability tests were performed according to EN standard 14683 and NIOSH regulations. Results and discussion Infectious porcine respiratory coronavirus and murine norovirus remained detectable on masks and respirators up to five and seven days of passive decontamination. Single and multiple cycles of VHP-, UVGI-, and DH were shown to not adversely affect bacterial filtration efficiency of masks. Single- and multiple UVGI did not adversely affect respirator filtration efficiency, while VHP and DH induced a decrease in filtration efficiency after one or three decontamination cycles. Multiple cycles of VHP-, UVGI-, and DH slightly decreased airflow resistance of masks but did not adversely affect respirator breathability. VHP and UVGI efficiently inactivated both viruses after five, DH after three, decontamination cycles, permitting demonstration of a loss of infectivity by more than three orders of magnitude. This multi-disciplinal approach provides important information on how often a given PPE item may be safely reused.

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9

Carvallo, Claudio, Francisca Jalil-Vega, and Rodrigo Moreno. "A multi-energy multi-microgrid system planning model for decarbonisation and decontamination of isolated systems." Applied Energy 343 (August 2023): 121143. http://dx.doi.org/10.1016/j.apenergy.2023.121143.

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10

Parreco, Joshua, Hahn Soe-Lin, Saskya Byerly, Ning Lu, Gabriel Ruiz, D. Dante Yeh, Nicholas Namias, and Rishi Rattan. "Multi-Center Outcomes of Chlorhexidine Oral Decontamination in Intensive Care Units." Surgical Infections 21, no. 8 (October 1, 2020): 659–64. http://dx.doi.org/10.1089/sur.2019.172.

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11

Currie, Jane, and David J. Heslop. "Operational systems evaluation of a large scale multi-agency decontamination exercise." International Journal of Disaster Risk Reduction 31 (October 2018): 1054–61. http://dx.doi.org/10.1016/j.ijdrr.2018.03.027.

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12

Wu, Yao, Lingce Kong, Xiuling Zhang, Yueting Guo, Yaxin Sun, Chonglin Zhao, Wenming Chen, Yanjun Zuo, and Congju Li. "Mesoporous Mn-based multi-component metal oxide for fast chemical warfare agent degradation." AIP Advances 12, no. 3 (March 1, 2022): 035038. http://dx.doi.org/10.1063/5.0083018.

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Protection against harmful chemical compounds is a major social concern, especially chemical warfare agents (CWAs) that are easy to synthesize and can cause mass casualties. The metal oxides with large surface area, porous structures, and a large number of active sites have shown outstanding performance for the adsorption and decontamination of CWAs. However, single-component metal oxides show a lower degradation rate for chemical warfare agents. Here, we demonstrate a convenient homogeneous hydrolysis method for the synthesis of mesoporous manganese-based multi-component metal oxides. Our strategy enables Ce or/and Zr to be doped into the δ-MnO2 structure during the forming process, remarkably enlarging the surface area and providing rich active sites for CWA catalysis. The as-synthesized multi-component metal oxides exhibit excellent performance for the CWA degradation. It is surprising to find that the best degree of removal of mustard gas (HD), soman (GD), and the VX nerve agent (VX) is 90.60%, 87.32%, and 100%, respectively, reaction with multi-component samples in 4 h, 2.92-fold increase to HD, 8.28-fold increase to GD, and 1.67-fold increase to VX contrast with undoped δ-MnO2. This work may provide an avenue for developing new generation chemical warfare agent decontamination materials and other catalysts.

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13

Claro, Tânia, Orla J. Cahill, Niall O’Connor, Stephen Daniels, and Hilary Humphreys. "Cold-Air Atmospheric Pressure Plasma Against Clostridium difficile Spores: A Potential Alternative for the Decontamination of Hospital Inanimate Surfaces." Infection Control & Hospital Epidemiology 36, no. 6 (March 17, 2015): 742–44. http://dx.doi.org/10.1017/ice.2015.39.

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AbstractClostridium difficile spores survive for months on environmental surfaces and are highly resistant to decontamination. We evaluated the effect of cold-air plasma against C. difficile spores. The single-jet had no effect while the multi-jet achieved 2–3 log10 reductions in spore counts and may augment traditional decontamination.Infect Control Hosp Epidemiol 2015;00(0):1–3

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Kamaraj, Ramakrishnan, and Subramanyan Vasudevan. "Decontamination of selenate from aqueous solution by oxidized multi-walled carbon nanotubes." Powder Technology 274 (April 2015): 268–75. http://dx.doi.org/10.1016/j.powtec.2015.01.043.

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15

Gutenson, J. L., A. N. S. Ernest, J. R. Fattic, L. E. Ormsbee, A. A. Oubeidillah, and X. Zhang. "Water Expert: a conceptualized framework for development of a rule-based decision support system for distribution system decontamination." Drinking Water Engineering and Science 8, no. 2 (August 28, 2015): 9–24. http://dx.doi.org/10.5194/dwes-8-9-2015.

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Abstract. Significant drinking water contamination events pose a serious threat to public and environmental health. Water utilities often must make timely, critical decisions without evaluating all facets of the incident. The data needed to enact informed decisions are inevitably dispersant and disparate, originating from policy, science, and heuristic contributors. Water Expert is a functioning hybrid decision support system (DSS) and expert system framework that emphasizes the meshing of parallel data structures in order to expedite and optimize the decision pathway. Delivered as a thin-client application through the user's web browser, Water Expert's extensive knowledgebase is a product of inter-university collaboration that methodically pieced together system decontamination procedures. Decontamination procedures are investigated through consultation with subject matter experts, literature review, and prototyping with stakeholders. This paper discusses the development of Water Expert, analyzing the development process underlying the DSS and the system's existing architecture specifications. Water Expert constitutes the first system to employ a combination of deterministic and heuristic models which provide decontamination solutions for water distribution systems. Results indicate that the decision making process following a contamination event is a multi-disciplinary effort. This contortion of multiple inputs and objectives limit the ability of the decision maker to find optimum solutions without technological intervention.

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Ige, Ebenezer O., Ojo P. Bodunde, Solomon O. Akinola, Anthony E. Dike, Iyadunni A. Anuoluwa, Ifeoluwatayo A. Ige, and Agbo Esoso. "A Low Cost Intelligent Fuzzy-Controlled Multipass-Multibaffle Dry-Air Sterilizer Device for Small-Sized Surgical Instruments." International Journal of Heat and Technology 39, no. 6 (December 31, 2021): 1853–60. http://dx.doi.org/10.18280/ijht.390620.

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A major constraint in hospitals and clinics in the interior villages of low resource countries is the access to stable power supply. Decontamination of reusable metal-based surgical tools is an energy-intensive process, the power required for this procedure may not be accessible in many health centres in low resource countries. Hence, decontamination device with low-energy requirements could immensely benefit village clinical settings. The developed sterilizer utilizes a Fresnel lens in a multi-baffle multi-pass chamber to amplify radiation intensity. An intelligent scheme of air passage was achieved using Fuzzy logic control to ensure control of pressure and temperature regime thermal transport within the chamber. The Fuzzy logic controller program was designed on Matlab's fuzzy logic toolbox and simulated with Simulink to evaluate its accuracy. The performance evaluation of the device showed that at an ambient temperature of 27℃ and a solar radiation intensity of 1362 W/m2, the sterilizer was able to sterilize at a temperature of 169.69℃ which is within the range for efficient dry heat sterilization to take place (140℃-170℃). This work has demonstrated that fuzzy logic controlled dry air sterilizer could achieve temperature ~ 150℃ within the heater chamber which may be suitable for sterilizing used surgical equipment.

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17

Magiopoulos, I., J. S. McQuillan, C. L. Burd, M. Mowlem, and M. N. Tsaloglou. "A multi-parametric assessment of decontamination protocols for the subglacial Lake Ellsworth probe." Journal of Microbiological Methods 123 (April 2016): 87–93. http://dx.doi.org/10.1016/j.mimet.2016.02.012.

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18

Shahabi, Seyyed MohammadMahdi, Mehrdad Ardebilipour, and Yasaman Omid. "Low-complexity fairness-driven pilot decontamination schemes for multi-cell massive MIMO systems." Physical Communication 36 (October 2019): 100803. http://dx.doi.org/10.1016/j.phycom.2019.100803.

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Amitai, Gabi, Hironobu Murata, Jill D. Andersen, Richard R. Koepsel, and Alan J. Russell. "Decontamination of chemical and biological warfare agents with a single multi-functional material." Biomaterials 31, no. 15 (May 2010): 4417–25. http://dx.doi.org/10.1016/j.biomaterials.2010.02.004.

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Matthes, Rutger, Lukasz Jablonowski, Lea Miebach, Vinay Pitchika, Birte Holtfreter, Christian Eberhard, Leo Seifert, et al. "In-Vitro Biofilm Removal Efficacy Using Water Jet in Combination with Cold Plasma Technology on Dental Titanium Implants." International Journal of Molecular Sciences 24, no. 2 (January 13, 2023): 1606. http://dx.doi.org/10.3390/ijms24021606.

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Peri-implantitis-associated inflammation can lead to bone loss and implant failure. Current decontamination measures are ineffective due to the implants’ complex geometry and rough surfaces providing niches for microbial biofilms. A modified water jet system (WaterJet) was combined with cold plasma technology (CAP) to achieve superior antimicrobial efficacy compared to cotton gauze treatment. Seven-day-old multi-species-contaminated titanium discs and implants were investigated as model systems. The efficacy of decontamination on implants was determined by rolling the implants over agar and determining colony-forming units supported by scanning electron microscopy image quantification of implant surface features. The inflammatory consequences of mono and combination treatments were investigated with peripheral blood mononuclear cell surface marker expression and chemokine and cytokine release profiles on titanium discs. In addition, titanium discs were assayed using fluorescence microscopy. Cotton gauze was inferior to WaterJet treatment according to all types of analysis. In combination with the antimicrobial effect of CAP, decontamination was improved accordingly. Mono and CAP-combined treatment on titanium surfaces alone did not unleash inflammation. Simultaneously, chemokine and cytokine release was dramatically reduced in samples that had benefited from additional antimicrobial effects through CAP. The combined treatment with WaterJet and CAP potently removed biofilm and disinfected rough titanium implant surfaces. At the same time, non-favorable rendering of the surface structure or its pro-inflammatory potential through CAP was not observed.

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Lapin, К. S., Е. V. Fot, Vsevolod V. Kuzkov, and М. Yu Кirov. "Impact of multizonal decontamination of upper respiratory tract on incidence of ventilator-associated pneumonia: multicenter randomized pilot study." Annals of Critical Care, no. 3 (July 28, 2023): 66–81. http://dx.doi.org/10.21320/1818-474x-2023-3-66-81.

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INTRODUCTION: Ventilator-associated pneumonia (VAP) is the one of nosocomial infections in intensive care units. VAP can result in prolonged duration of hospitalization and invasive mechanical ventilation (MV) that is associated with attributive mortality. OBJECTIVE: The aim of our pilot multicenter randomized study was to assess effect of the multizonal decontamination of upper airway including subglottic space on the VAP incidence and time of onset, as well as colonization upper airway and clinical outcomes. MATERIALS AND METHODS: Sixty patients requiring the prolonged MV were included in the prospective study. All participants were randomized into three groups: the control, the local antiseptic (LA) and the bacteriophage (BP). All patients were managed using similar VAP protective bundle. Infection-related ventilator-associated complications (IVAC) were registered based on clinical, laboratory, and instrumental examination. Diagnosis of VAP was confirmed if CPIS was ≥ 6 points. RESULTS: A total incidence of IVAC did nоt differ between groups: 15 (75 %), 14 (70 %), and 17 (85 %) cases in the control, LA, and BP groups, respectively. The VAP incidence was lower in the LA and BP groups compared with the controls: 3 (15 %) and 3 (15 %) vs 10 (50 %) cases (χ2 = 8.35; p = 0.015). The overall mortality was 30 % and did not differ between the groups. Multi-selective decontamination resulted in a trend to increased ventilator-associated tracheobronchitis incidence in the BP group and to silent colonization in both LA and BP groups (p = 0.07). No differences in the duration of MV, ICU and hospital stay were observed. CONCLUSIONS: The combined multizonal upper airway decontamination involving subglottic space is associated with a reduction of the VAP incidence but did not change the overall IVAC rate. Multizonal decontamination based on subglottic bacteriophage instillation might have a potential to influence the microbial heterogeneity of upper airways.

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Hachad, Lamiae, Fatiha Mrabti, Hicham Ghennioui, and Mohcine Zouak. "Pilot Decontamination over Time Frequency and Space Domains in Multi-Cell Massive MIMO System." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 5 (October 1, 2018): 3609. http://dx.doi.org/10.11591/ijece.v8i5.pp3609-3619.

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In this article, we show that Pilot contamination problem can be seen as a source separation problem using time, frequency, and space domains. Our method capitalizes on a nonunitary joint diagonalization of spatial quadratic time-frequency (STFD) signal representation to identify the desired and interfering users. We first compute the noise subspace from the STFD matrices selected appropriately. Secondly, we use the noise subspace obtained to estimate the Elevation (El) and the Azimuth (Az) angles for which the MUSIC cost function is maximized. Numerical simulations are provided to illustrate the effectiveness and the behavior of the proposed approach.

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23

Qayum, Abdul, Jing Wei, Qiannan Li, Dairong Chen, Xiuling Jiao, and Yuguo Xia. "Efficient decontamination of multi-component wastewater by hydrophilic electrospun PAN/AgBr/Ag fibrous membrane." Chemical Engineering Journal 361 (April 2019): 1255–63. http://dx.doi.org/10.1016/j.cej.2018.12.161.

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Bomba, A., and A. Safonyk. "Identification of mass-transfer coefficient in spatial problem of filtration." Mathematical Modeling and Computing 1, no. 2 (2014): 135–43. http://dx.doi.org/10.23939/mmc2014.02.135.

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A modeling problem of the process of liquid multi component decontamination by a spatial filter is considered, it takes into account the reverse influence of decisive factors (contamination concentrations of liquid and sediment) on characteristics (coefficient of porosity, diffusion) of the medium and gives us the possibility to determine small mass transfer coefficient under the conditions of prevailing of convective constituents over diffusive ones. An algorithm of the solution of the corresponding nonlinear singular disturbed inverse problem of "convection-diffusion mass transfer" type is suggested.

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Hariyati, Leli Ika, and Asroful Hulam Zamroni. "Pencegahan Penularan Multi-Resisten Organisme (MRO) Melalui Manset Tekanan Darah." Journal of Telenursing (JOTING) 5, no. 2 (August 4, 2023): 1659–66. http://dx.doi.org/10.31539/joting.v5i2.6878.

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This study aims to explore interventions to prevent the occurrence of multi-resistant organisms (MRO) in patients with blood pressure cuff placement in special care rooms. This research method uses the 2020 Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines with the Scopus, PubMed, CINAHL, and SAGE databases. The results of the study found five types of interventions namely disinfection and decontamination with alcohol, addition of hydrogen peroxide in the sterilization process, cuff design with a barrier between the skin and the cuff, education and training programs for medical personnel, and development of standard procedure protocols. In conclusion, interventions to prevent the occurrence of multi-organism resistance in patients with blood pressure cuff placement do not only focus on equipment, but the knowledge and standard of cleaning procedures owned by health workers need to be improved and developed. Keywords: Blood Pressure Cuff, Prevention of Transmission, Multi-Organism Resistance (MRO)

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Ma, Ge, Yumeng Zhu, Zhenqian Zhang, and Liangchao Li. "Preparation and characterization of multi-walled carbon nanotube/TiO2 composites: Decontamination organic pollutant in water." Applied Surface Science 313 (September 2014): 817–22. http://dx.doi.org/10.1016/j.apsusc.2014.06.079.

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Faheem, Faheem, Jianguo Bao, Han Zheng, Haseeb Tufail, Sana Irshad, and Jiangkun Du. "Adsorption-assisted decontamination of Hg(ii) from aqueous solution by multi-functionalized corncob-derived biochar." RSC Advances 8, no. 67 (2018): 38425–35. http://dx.doi.org/10.1039/c8ra06622a.

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Huang, Xiao-Dong, Yousef El-Alawi, Jolanta Gurska, Bernard R. Glick, and Bruce M. Greenberg. "A multi-process phytoremediation system for decontamination of persistent total petroleum hydrocarbons (TPHs) from soils." Microchemical Journal 81, no. 1 (August 2005): 139–47. http://dx.doi.org/10.1016/j.microc.2005.01.009.

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Levenets, V. V., O. Yu Lonin, O. P. Omelnik, A. O. Shchur, and G. V. Prostantinov. "Determination of the deactivating properties of shampoos for cesium, strontium and cobalt." Nuclear Physics and Atomic Energy 24, no. 2 (June 25, 2023): 162–69. http://dx.doi.org/10.15407/jnpae2023.02.162.

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The decontamination properties of shampoos for cesium, strontium, and cobalt were determined. The method has been developed for determining the decontaminating properties of shampoos. The chemical part of the study includes the preparation of hair, which consists of forced pollution and subsequent washing. Stable isotopes were used in the work. This has increased the safety of staff during chemical hair research. The analytical part includes the quantitative determination of the cesium, strontium, and cobalt in the hair, which was carried out by the Particle-Induced X-ray Emission (PIXE) method using the analytical nuclear-physical complex "Sokol". Various shampoos were analyzed, and their decontamination properties were determined. During the research, various samples of shampoos, which are presented on the market of Ukraine, were considered. It has been established that TM "Ringo" shampoo has the best deactivating properties for cesium (Kd - 574.0) and insignificant deactivating properties for strontium (Kd - 3.1) and cobalt (Kd - 3.6). It was determined that with multi-isotope contamination (a mixture of cesium, strontium, and cobalt isotopes) decrease in the deactivation coefficient for all isotopes was observed, which is due to the competition factor of the isotopes in the complexation process with shampoo. Reduction of decontaminating properties was observed on all samples of shampoos.

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van der Voort, P. H. J., E. N. van Roon, G. A. Kampinga, E. C. Boerma, R. Th Gerritsen, P. H. M. Egbers, and M. A. Kuiper. "A before-after Study of Multi-resistance and Cost of Selective Decontamination of the Digestive Tract." Infection 32, no. 5 (October 2004): 271–77. http://dx.doi.org/10.1007/s15010-004-3170-5.

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Zhang, Xiaoqian, Zhipeng Wu, Yixiao Wu, Abdulmoseen Segun Giwa, Shaobin Huang, and Lishan Niu. "Visible-light-driven simultaneous decontamination of multi-antibiotics by facile synthesized BiOCl loaded food wastes biochar." Environmental Pollution 316 (January 2023): 120683. http://dx.doi.org/10.1016/j.envpol.2022.120683.

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Al-Shammary, Ali, and Moutaz Abdul Mounam. "Exodia phenomenon of foodborne Mycophages cocktails against chimeric strains of Candida albicans recovered from dairy chain ecosystems in Baghdad." Bionatura 8, no. 1 (March 15, 2023): 1–5. http://dx.doi.org/10.21931/rb/2023.08.01.91.

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Influential, organized groups with natural antimicrobial and anti-biofilm broad-spectrum power exist within the food chain, like a hidden dormant mimic hygienic bio life nanobodies that can terminate multiple opportunistic disease entities owing multi-stress resistant forbidden recalcitrant power, such as Candida albicans. These wonderful dynamic forces created by ALLAH Almighty are the Mycophages or fungi-eating state of fungi foodborne phages, and this project was redirected to be a dare to leap from us towards the future. Multi-stress resistant C. albicans that are resistant to different antifungal agents with their genetic tolerance plasticity to thermal pasteurization decontamination module as well as to ultraviolet irradiation hurdle strategy recovered from raw milk (mastitis), yogurt and soft cheese with versatile phenotypes resident in topic sectors of Abu-Ghraib, Al-Fudhaliyah and Al-Sadrya in Baghdad. From the other side of trueness, we discover an abnormal deviated activity of bacteriophages cocktails that behave with broad-spectrum functions against Methicillin-resistant Staphylococcus aureus (MRSA) and Vancomycin-resistant Streptococci (VRE) as lytic bactericidal and versus multi stress resistant C. albicans as redirected terminator lytic Mycophages thus objected to be a new nano-built hygienic phenomenon entity (Exodia). Keywords: Exodia, Lytic Mycophages, Multi stress-resistant Candida albicans, dairy chain ecosystems

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Talhofer, Václav, and Šárka Hošková-Mayerová. "Method of Selecting a Decontamination Site Deployment for Chemical Accident Consequences Elimination: Application of Multi-Criterial Analysis." ISPRS International Journal of Geo-Information 8, no. 4 (April 2, 2019): 171. http://dx.doi.org/10.3390/ijgi8040171.

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Multi-criterial analysis under the current use of digital geographic data is a quite common method used to evaluate the influence of the geographic environment on a planned or ongoing activity. The advantage of this method is a possibility of complex evaluation of all influences as well as a possibility to observe how the individual influences manifest in the final result. Its critical moment is establishing the structure of individual factors that influence the given activity, setting their weights and, subsequently, a choice of a suitable user function. The article provides guidelines how to set the individual decision-making criteria including setting their weights, and the application of the resulting user function in GIS environment with regards to the problem solved. Furthermore, the influence of change in weights of criteria on the complete result of the analysis is discussed. This article documents detailed studies that show how the results of solutions can differ in the same analytical task based on change in the weights of individual criteria. These studies are documented on a model example of a chosen suitable place for the deployment of decontamination center. Finally, the article describes possibilities of further development of the model solution, with the aim to make it a verified tool that may be implemented in the systems of command in Fire Rescue Service units and Chemical Troops units of the Czech Army.

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Hu, Cheng, Hong Wang, and Rongfang Song. "Pilot Decontamination in Multi-Cell Massive MIMO Systems via Combining Semi-Blind Channel Estimation With Pilot Assignment." IEEE Access 8 (2020): 152952–62. http://dx.doi.org/10.1109/access.2020.3015263.

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Han, Huy-Dung, Dang-An Nguyen, Van-Duc Nguyen, Tien-Hoa Nguyen, and Muhammad Zia. "Pilot decontamination for multi-cell massive MIMO systems using asynchronous pilot design and data-aided channel estimation." Physical Communication 30 (October 2018): 76–85. http://dx.doi.org/10.1016/j.phycom.2018.07.006.

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Youssef Maxwell, Sara, Mohamed S. Abd Elghafar, and Maii A. Shams Eldeen. "Investigation and management of Klebsiella Pneumoniae Outbreak in Intensive Care Unit of Tanta University Emergency Hospital." Egyptian Journal of Medical Microbiology 30, no. 3 (July 1, 2021): 53–58. http://dx.doi.org/10.51429/ejmm30307.

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Background: Klebsiella pneumoniae infection is responsible for a wide range of infections including pneumonia, bacteremia, wound infections, and urinary tract infections. Objective: To investigate and manage the occurrence of multi-drug resistant Klebsiella pneumoniae outbreak in Intensive Care Unit of Tanta University Emergency Hospital. Methodology: The investigation of the outbreak included isolates identification and typing while management included implementation of infection prevention and control precautions; establishment of an Outbreak Control Team; epidemiological investigations; and decontamination of environment. Results: During September 2020, five patients in the Intensive Care Unit in Emergency Hospital of Tanta University had multi drug-resistant Klebsiella pneumoniae identified in samples obtained from a variety of specimens. The fifth case was identified 10 days following confirmation of the first case. The Microbiology laboratory confirmed the five cases had identical Klebsiella pneumoniae strains. This suggests that there was a patient-to- patient spread of multidrug resistant Klebsiella pneumoniae. Conclusion: This investigation revealed the importance of proactive recognition of a possible outbreak, screening of patients transferred from other hospitals, early identification of any unusual microorganisms and implementation of early infection control interventions.

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Saber, Osama, Nagih M. Shaalan, Faheem Ahmed, Shalendra Kumar, and Adil Alshoaibi. "One-Step Multi-Doping Process for Producing Effective Zinc Oxide Nanofibers to Remove Industrial Pollutants Using Sunlight." Crystals 11, no. 10 (October 19, 2021): 1268. http://dx.doi.org/10.3390/cryst11101268.

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Doping processes for optical materials are one of the driving forces for developing efficient and clean technologies for decontamination of aquatic effluents through lowering their band gap energy to become effective in sunlight. The current study has used a non-conventional technique for doping zinc oxide by multi metals, non-metals and organic dyes through a one-step process. In this trend, Zn-Al nanolayered structures have been used as hosts for building host–guest interactions. Organic dyes that have inorganic species of iron, nitrogen and sulfur have been used as guests in the intercalation reactions of Zn-Al layered double hydroxides. By intercalating green dyes, organic–inorganic nanohybrids were formed as nanolayered structures with expanding interlayered spacing to 2.1 nm. By changing the concentration of green dyes and thermal treatment, series of nanofibers and nanoplates of zinc oxides were formed and doped by aluminum, iron and sulfur in addition to colored species. The optical properties of the multi-doped zinc oxide indicated that it became suitable for solar applications because its band gap energy decreased from 3.30 eV to 2.80 eV. The experimental and kinetic results of the multi-doped zinc oxide concluded that the colored pollutants were effectively removed during 50 min of sunlight irradiation.

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Zeng, Wenbo, Yigang He, Bing Li, and Shudong Wang. "Fractional pilot reuse and max k‐cut based pilot decontamination scheme for multi‐cell TDD massive MIMO systems." IET Communications 15, no. 8 (March 11, 2021): 1109–22. http://dx.doi.org/10.1049/cmu2.12146.

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Michielan, Andrea, Azzurra Schicchi, Roberto Cappuccio, Davide Lonati, Francesca Lamboglia, Alessandra Vitalba, Alessandro Caroli, Marta Crevani, Carlo A. Locatelli, and Giorgio Betetto. "Intentional ingestion of elemental mercury requiring multi-step decontamination and prophylactic appendectomy: a case report and treatment proposal." Clinical Toxicology 56, no. 1 (June 26, 2017): 69–73. http://dx.doi.org/10.1080/15563650.2017.1338346.

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Chan, YC, HT Fung, CK Lee, SH Tsui, HK Ngan, MY Sy, ML Tse, et al. "A Prospective Epidemiological Study of Acute Poisoning in Hong Kong." Hong Kong Journal of Emergency Medicine 12, no. 3 (July 2005): 156–61. http://dx.doi.org/10.1177/102490790501200305.

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Objective To update our epidemiological knowledge of acute poisoning in Hong Kong. Methods A multi-centred prospective study was conducted for six months in six major accident and emergency departments in Hong Kong. A specially designed form was used to collect demographic data, type of poison involved, cause of poisoning, management, disposal as well as final outcome of the poisoned patients. Results A total of 1,467 patients (male: 588, female: 879) were included in the study. Most of them were young adults (32% were between 20 and 40 years old). Suicidal attempt (64%) was the most common cause of poisoning. Notably, 379 (26%) patients took more than one poison. Among the 2,007 counts of poison taken, sleeping pills (24%) and analgesics (18%) were the most commonly used drugs and paracetamol was the commonest single ingredient involved in poisoning. Most patients were treated with supportive measures, and about 40% and 15% of the patients were given gastrointestinal decontamination and specific antidotes respectively in their management, in which activated charcoal and N-acetylcysteine were the most common. Concerning disposal from the emergency department, 91% of the poisoned cases required in-patient management. Most patients had an uneventful recovery but 5 (0.3%) had significant disability and 21 (1.4%) died. Suicidal carbon monoxide poisoning was the leading cause of mortality in our study. Conclusions Most acute poisonings in Hong Kong were suicidal in nature and paracetamol was the commonest agent. Activated charcoal was the most commonly used decontamination method and most patients had an uneventful recovery.

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Hurley, James C. "Asymmetric Effects of Decontamination Using Topical Antibiotics for the ICU Patient." Symmetry 13, no. 6 (June 8, 2021): 1027. http://dx.doi.org/10.3390/sym13061027.

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There are several antiseptic, antibiotic and non-decontamination-based interventions for preventing intensive care unit (ICU) acquired infection. These have been evaluated in >200 studies. Infection prevention using topical antibiotic prophylaxis (TAP) appears to be the most effective. Whether antibiotic use in the ICU may influence the risk of infection among concurrent control patients within the same ICU and result in asymmetrical herd effects cannot be resolved with individual studies examined in isolation. The collective observations within control and intervention groups from numerous ICU infection prevention studies simulates a multi-center natural experiment enabling the herd effects of antibiotics to be evaluated. Among the TAP control groups, the incidences for both ventilator associated pneumonia (VAP) and mortality are unusually high in comparison to literature-derived benchmarks. Paradoxically, amongst the TAP intervention groups, the incidences of mortality are also unusually high and the VAP incidences are similar (i.e., not lower) compared to the incidences among studies of other interventions. By contrast, the mortality incidences among the intervention groups of other studies are similar to those among the intervention groups of TAP studies. Using topical antibiotics to prevent infections acquired within the ICU environment may result in profoundly asymmetrical effects.

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Botero-Londoño, Julián Mauricio, Arnulfo Gómez-Carabali, and Mónica Andrea Botero-Londoño. "Nutrient Absorption in Tithonia Diversifolia." Universitas Scientiarum 24, no. 1 (February 13, 2019): 33–48. http://dx.doi.org/10.11144//javeriana.sc24-1.nait.

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Tithonia diversifolia is arobust shrub that has high ecological plasticity and adaptability, high capacity of nutrient absorption and high nutrient contents. These characteristics make Tithonia diversifolia be considered as a multi-purpose plant, such as for animal feed, soil decontamination and soil restorer. Likewise, it is a plant with high ecological plasticity and adaptability. The study of the nutrient absorption and the fertilization represent an important advance in the development of productive systems focused on maximizing forage productivity, which guarantees the soil sustainability. Based on this, a split plot design was conducted to study the effects of different levels of fertilization. The results showed an impact of the elements and levels of fertilization on the nutrient absorption capacity, finding that the elements that were incorporated in the fertilization increase the foliar contents and the nutrient absorption in the plant.

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Kim, Changju, Taehoon Koh, Donggeun Lee, and Duhee Park. "Assessment of Heavy Metal and Oil-Contaminated Silty Sand Treatment by Electrical Resistance Heating Method." Applied Sciences 12, no. 9 (May 5, 2022): 4630. http://dx.doi.org/10.3390/app12094630.

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The feasibility of the electrical resistance heating method developed in this study was evaluated for the remediation of multi-contaminated silty sand in terms of environmental and geotechnical aspects. The multi-contaminated silty sand sampled in this study was polluted with 21,081 mg/kg of heavy oils, as well as heavy metals. Silty sand, treated using the electrical resistance _heating method was environmentally, as well as geotechnically, compared with the multi-contaminated silty sand in terms of residual concentration, leaching, shear modulus and modified California bearing ratio (CBR). The remediation test was conducted with a target temperature of 700 °C. The removal efficiency of total petroleum hydrocarbon (TPH) was estimated as 99.99% after remediation in 48 h; most of the heavy metals, as some of the contaminants, were isolated as a crystal in treated silty sand without any harmful leakage, and heavy oil was fully extracted with a form of mist and dust. Moreover, it was also geotechnically found that the decontamination process, including the removal of heavy metals and oils, had an effect on the increase in the internal friction angle, shear modulus and modified CBR of treated silty sand. In conclusion, it is shown that the electrical resistance heating method developed in this study is an environmentally and geotechnically effective technology for the recovery of clean construction fill material from hazardous-waste-contaminated silty sand.

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Marcos⁎, J. A., F. W. Pohlman, P. N. Dias-Morse, and C. L. Coffman. "Assessment of physical and chemical multi-hurdle decontamination approach using organic acids to enhance microbial properties of beef trimmings." Meat Science 96, no. 1 (January 2014): 486–87. http://dx.doi.org/10.1016/j.meatsci.2013.07.138.

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Vila-Donat, P., S. Marín, V. Sanchis, and A. J. Ramos. "A review of the mycotoxin adsorbing agents, with an emphasis on their multi-binding capacity, for animal feed decontamination." Food and Chemical Toxicology 114 (April 2018): 246–59. http://dx.doi.org/10.1016/j.fct.2018.02.044.

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E. Elgabeery, Rana, Radwa A. Eissa, Sohair M. Soliman, and Naglaa F. Ghoname. "Healthcare Workers’ Mobile Phones as a Possible Vehicle of Nosocomial Pathogens and the Role of Different Disinfectants in their Decontamination." Egyptian Journal of Medical Microbiology 30, no. 3 (July 1, 2021): 29–36. http://dx.doi.org/10.51429/ejmm30304.

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Background: As Mobile Phones (MPs) aren’t cleaned routinely and have been touched during patient’s examination, they may become contaminated with hospital pathogens. Objectives: Screen MPs of Health care workers (HCWs) for pathogens and verify the effect of disinfectants in their decontamination. Methods: A questionnaire was submitted by 160 HCWs in Tanta University Hospitals. Samples were taken from their MPs and subjected to pour plate counting before and after disinfection. Standard identification and antibiotic susceptibility of isolates were done. Results: Colony count was greater in MPs used while caring for patients or inside restroom, and was less in regularly cleaned MPs. All tested disinfectants reduced the colony count significantly. Pathogens were isolated from 84.38% of samples and 36.25% of them were Multi-Drug Resistant Organisms (MDROs). Conclusion: Using MPs at critical care areas and restroom may contribute to their contamination with pathogens. Regular disinfection of MPs can reduce this contamination.

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Maho, Thomas, Raphaelle Binois, Fabienne Brulé-Morabito, Maryvonne Demasure, Claire Douat, Sébastien Dozias, Pablo Escot Bocanegra, et al. "Anti-Bacterial Action of Plasma Multi-Jets in the Context of Chronic Wound Healing." Applied Sciences 11, no. 20 (October 15, 2021): 9598. http://dx.doi.org/10.3390/app11209598.

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This work is a contribution to the development and implementation of non-thermal plasma technology for decontamination in the perspective of nosocomial and chronic wound innovative therapies. Multi jets devices based on Plasma Gun® technology in static and scanning operation modes and bacterial lawns inoculated with resistant and non-resistant bacterial strains were designed and used. A pilot toxicity study exploring plasma treatment of wound bearing patients, performed with a low voltage plasma applicator, is documented as a first step for the translation of in vitro experiments to clinical care. Bacterial inactivation was demonstrated for Staphylococcus aureus, Pseudomonas aeruginosa and drug resistant S. aureus, P. aeruginosa and Escherichia Coli strains collected from patient wounds at Orleans (France) hospital. A few square centimeter large contaminated samples were inactivated following a single plasma exposure as short as one minute. Samples inoculated with a single but also a mix of three resistant pathogens were successfully inactivated not only right after their contamination but for mature lawns as well. Similar bactericidal action was demonstrated for antibiotic-resistant and non-resistant P. aeruginosa. The time exposure dependent increase of the inhibition spots, following multi jets exposure, is discussed as either the accumulation of reactive species or the likely combinatory action of both the reactive species and transient electric field delivery on inoculated samples.

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Latorrata, Saverio, Riccardo Balzarotti, Maria Isabella Adami, Bianca Marino, Silvia Mostoni, Roberto Scotti, Maurizio Bellotto, and Cinzia Cristiani. "Wastewater Treatment Using Alkali-Activated-Based Sorbents Produced from Blast Furnace Slag." Applied Sciences 11, no. 7 (March 26, 2021): 2985. http://dx.doi.org/10.3390/app11072985.

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Currently, slags from secondary steel production, foundries, and blast furnaces represent a major environmental problem since they end up mainly in landfills, and their valorization would bring undeniable advantages both to environment and economy. Moreover, the removal of heavy metal ions from mines wastewater is one of the challenges of the last decades, and adsorption has been proposed as one of the most promising techniques for this purpose. In this context, the use of alkali-activated slags as sorbent can be a good opportunity to develop low cost, environmentally friendly, and sustainable materials. Accordingly, wastewater decontamination by adsorption over a porous monolithic bed made of alkali-activated hydraulic binders is proposed. Alkali-activated materials were prepared using slags from the metallurgical industry and reacted with an alkaline component (high alumina calcium aluminate cement, CAC 80) at ambient conditions. The obtained monolithic foams were tested to evaluate the uptake efficiency towards metal capture. Solutions containing Cu(II), Fe(III), Ni(II), Mn(II), and simulating the metal concentrations of a real mine effluent were tested, both in single- and multi-ion solutions. Promising capture efficiency, values of 80–100% and of 98–100% in the case of the single ion and of the multi-ion solutions were obtained, respectively.

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Ozutsumi, Takenori, Masayuki Kogure, Yuichi Niibori, and Taiji Chida. "Fundamental Study on Transport Model for Radionuclides under Unsaturated Condition around Near-Surface Underground." MRS Advances 5, no. 5-6 (2020): 223–32. http://dx.doi.org/10.1557/adv.2020.54.

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ABSTRACTThe low-level nuclear wastes such as decontamination waste from Fukushima are disposed in near-surface underground, where the intermittent recharge of rain and groundwater causes spatial distribution of water content. Therefore, pores of soils are not filled with water, that is, an unsaturated zone will be formed. In such a condition, since the water flow path are detoured by clogged gas in pores of soil in the unsaturated zone, the migration path of radionuclide would be different from the saturated zone. So far, the one-dimensional advection-dispersion equation (ADE) model has been widely used in order to explain experimental results under an unsaturated condition. However, the detouring of local flow-paths remarkably affects the mass transfer. The one-dimensional ADE evaluates such a detouring effect by using Peclet number and retardation coefficient as fitting parameters. In other words, the one-dimensional ADE model is difficult to explain mass transfer under an unsaturated condition. Therefore, the purpose of this study is explaining such complicated transport of radionuclides using a multi-path model based on phenomena in underground. The proposed multi-path model considering both water saturation and permeability distributions showed good agreement with the experimental data under an unsaturated condition.

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De Baerdemaeker, Klaas, Amber Van Reepingen, Anton Nikiforov, Bruno De Meulenaer, Nathalie De Geyter, and Frank Devlieghere. "Non-Thermal Plasma Decontamination Using a Multi-Hollow Surface Dielectric Barrier Discharge: Impact of Food Matrix Composition on Bactericidal Efficacy." Foods 12, no. 2 (January 13, 2023): 386. http://dx.doi.org/10.3390/foods12020386.

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The non-thermal plasma (NTP) treatment of food products as an alternative for thermal processing has been investigated over the last few years. This quasi-neutral gas contains a wide variety of reactive oxygen and nitrogen species (RONS), which could be lethal for bacterial cells present in the product. However, apart from only targeting bacteria, the RONS will also interact with components present in the food matrix. Therefore, these food components will protect the microorganisms, and the NTP treatment efficiency will decrease. This effect was investigated by supplementing a plain agar medium with various representative food matrix components. After inoculation with Escherichia coli O157:H7 (STEC) MB3885, the plates were treated for 30 s by a multi-hollow surface dielectric barrier discharge (MSDBD) generated in either dry air or air at 75% humidity, at constant power (25.7 ± 1.7 W). Subsequently, the survival of the cells was quantified. It has been found that the addition of casein hydrolysate (7.1 ± 0.2 m%), starch (2.0 m%), or soybean oil (4.6 m%) decreased the inactivation effect significantly. Food products containing these biomolecules might therefore need a more severe NTP treatment. Additionally, with increasing humidity of the plasma input gas, ozone levels decreased, and the bactericidal effect was generally less pronounced.

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