scholarly journals On the emergence of antibacterial and antiviral copper cold spray coatings

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Bryer C. Sousa ◽  
Christopher J. Massar ◽  
Matthew A. Gleason ◽  
Danielle L. Cote
Keyword(s):  
Literature Review ◽  
Cold Spray ◽  
Environmental Protection Agency ◽  
Direct Contact ◽  
Relevant Literature ◽  
Pathogen Inactivation ◽  
Preventative Measure ◽  
Spray Coatings ◽  
Spray Material ◽  
Antimicrobial Materials

AbstractIn this literature review, the antipathogenic properties and contact-mediated antibacterial and antiviral performance of copper cold spray surfaces are assessed and compared with alternative antimicrobial materials that are able to kill and/or inactivate infectious agents via direct contact. Discussion is also provided concerning the suitability of copper cold spray material consolidations as biocidal and viricidal surfaces that retain long-term functionality as a preventative measure against fomite transmission of pathogenic agents and hospital-acquired infections from contaminated high-touch surfaces. Numerable alternative antimicrobial coatings and surfaces that do not rely upon the oligodynamic action of copper are detailed. Given the ongoing need for recognition of said alternative antimicrobial materials by authoritative agencies, such as the U.S. Environmental Protection Agency, the relevant literature on non-copper-based antipathogenic coatings and surfaces are then described. Furthermore, a wide-ranging take on antipathogenic copper cold spray coatings are provided and consideration is given to the distinctive grain-boundary mediated copper ion diffusion pathways found in optimizable, highly deformed, copper cold spray material consolidations that enable pathogen inactivation on surfaces from direct contact. To conclude this literature review, analysis of how copper cold spray coatings can be employed as a preventative measure against COVID-19 was also presented in light of on-going debates surrounding SARS-CoV-2’s non-primary, but non-negligible, secondary transmission pathway, and also presented in conjunction with the inevitability that future pathogens, which will be responsible for forthcoming global pandemics, may spread even more readily via fomite pathways too.

scholarly journals Antimicrobial Copper Cold Spray Coatings and SARS-CoV-2 Surface Inactivation

MRS Advances ◽  
2020 ◽  
Vol 5 (56) ◽  
pp. 2873-2880
Author(s):  
Bryer C. Sousa ◽  
Danielle L. Cote
Keyword(s):  
Cold Spray ◽  
Relevant Literature ◽  
Antimicrobial Properties ◽  
Copper Ion ◽  
Ion Diffusion ◽  
Preventative Measure ◽  
Spray Coatings ◽  
Healthcare Settings ◽  
Contact Killing

AbstractThis article contextualizes how the antimicrobial properties and antipathogenic contact killing/inactivating performance of copper cold spray surfaces and coatings and can be extended to the COVID-19 pandemic as a preventative measure. Specifically, literature is reviewed in terms of how copper cold spray coatings can be applied to high-touch surfaces in biomedical as well as healthcare settings to prevent fomite transmission of SARS-CoV-2 through rapidly inactivating SARS-CoV-2 virions after contaminating a surface. The relevant literature on copper-based antipathogenic coatings and surfaces are then detailed. Particular attention is then given to the unique microstructurally-mediated pathway of copper ion diffusion associated with copper cold spray coatings that enable fomite inactivation.

scholarly journals Bronchoesophageal fistula secondary to esophageal diverticulum in an adult: a case report and literature review

2021 ◽  
Vol 49 (2) ◽  
pp. 030006052199223
Author(s):  
Xiaolin Zhang ◽  
Hongmei Jiao ◽  
Xinmin Liu
Keyword(s):  
Case Report ◽  
Literature Review ◽  
Respiratory Infections ◽  
Relevant Literature ◽  
Rare Condition ◽  
Clinical Entity ◽  
Rare Clinical Entity ◽  
Esophageal Diverticulum ◽  
Bronchoesophageal Fistula ◽  
Fatal Complications

Esophageal diverticulum with secondary bronchoesophageal fistula is a rare clinical entity that manifests as respiratory infections, coughing during eating or drinking, hemoptysis, and sometimes fatal complications. In the present study, we describe a case of bronchoesophageal fistula emanating from esophageal diverticulum in a 45-year-old man who presented with bronchiectasis. We summarize the characteristics of this rare condition based on a review of the relevant literature.

scholarly journals Management of Isolated Capitate Nonunion: A Case Series and Literature Review

2018 ◽  
Vol 07 (05) ◽  
pp. 419-423 ◽  
Author(s):  
Rishabh Jethanandani ◽  
Schneider Rancy ◽  
Keith Corpus ◽  
Jeffrey Yao ◽  
Scott Wolfe
Keyword(s):  
Literature Review ◽  
Internal Fixation ◽  
Bone Grafting ◽  
Relevant Literature ◽  
Case Series ◽  
Rare Condition ◽  
Vascular Supply ◽  
Autogenous Bone ◽  
Rare Injury ◽  
Autogenous Bone Grafting

Background Isolated capitate nonunion is rare. No consensus on the appropriate treatment for this condition exists. Case Description We reported two cases of capitate fracture nonunion presenting several months after untreated high-impact wrist trauma. Treatment was delayed as both patients' nonunions were missed on conventional radiographs. Both were ultimately diagnosed with advanced imaging and successfully treated with internal fixation and autogenous bone grafting. The relevant literature pertaining to capitate nonunion was reviewed. Literature Review Immobilization and internal fixation with bone grafting for capitate nonunion have been described in the literature. Loss of vascular supply and progression to avascular necrosis is a concern after capitate nonunion. Clinical Relevance We present two cases and review the literature on the diagnosis and treatment of this rare injury to guide management. Internal fixation with autogenous bone grafting could play a role in management for this rare condition.

The Roles of Knowledge Management and Cooperation in Determining Company Innovation Capability: A Literature Review

10.28945/4739 ◽  
2021 ◽  
Vol 16 ◽  
pp. 125-145
Author(s):  
Elan N Purwanto ◽  
Ernie T Sule ◽  
Imas Soemaryani ◽  
Yudi Azis
Keyword(s):  
Knowledge Management ◽  
Theoretical Model ◽  
Literature Review ◽  
Data Extraction ◽  
Relevant Literature ◽  
Future Research ◽  
Online Research ◽  
Innovation Capability ◽  
Research Model ◽  
Business Practitioners

Aim/Purpose: The aim of this study is to develop a research model derived from relevant literature to guide empirical efforts. Background: Companies struggle to innovate, which is essential for improving their performance, surviving in competition, and growing. A number of studies have discussed company innovation capability, stating that innovation capability is influenced by several variables such as cooperation and knowledge management. Therefore, further research is necessary to identify factors playing a role in enhancing innovation capability. Methodology: This study is based on systematic literature review. The stages are: (1) research scope review, (2) comprehensive online research, (3) journal quality assessment, (4) data extraction from journals, (5) journal synthesis, and (6) comprehensive report. The online research used Google Scholar database, by browsing titles, abstracts, and keywords to locate empirical research studies in peer-reviewed journals published in 2010-2020. Furthermore, 62 related articles were found, of which 38 articles were excluded from further analysis and 24 articles were selected because they were more related to the topic. Contribution: The results of this study enrich the research in the field of knowledge management, cooperation, and innovation capability by developing a conceptual framework of innovation capability. The proposed theoretical model may be fundamental in addressing the need of a research model to guide further empirical efforts. Findings: This study provides a research model derived from systematically reviewing relevant literature. The proposed theoretical model was done by incorporating the aspects of knowledge management, cooperation, and innovation capability. The model shows that knowledge management and cooperation are essential aspects of innovation capability. Furthermore, this study also provides the dimensions and sub dimensions of each variable that was established after synthesizing the literature review. Recommendations for Practitioners: Business practitioners can use the identified predictors of innovation capability and the dimensions of each variable to explore their company’s innovation capability. They can also take the relevant variables into consideration when making policies regarding innovation. Recommendation for Researchers: The theoretical model proposed in this study needs validation with further empirical investigation. Impact on Society: Readers of this paper can obtain an understanding that knowledge management and cooperation are essential aspects to consider in enhancing innovation capability. Future Research: Future studies should explore other dimensions of knowledge management and cooperation through alternative approaches and perspectives.

scholarly journals Meconium periorchitis: A case report and literature review

2013 ◽  
Vol 7 (7-8) ◽  
pp. 495 ◽  
Author(s):  
Ammar Hameed Alanbuki ◽  
Ashwith Bandi ◽  
Nick Blackford
Keyword(s):  
Case Report ◽  
Literature Review ◽  
Rare Disease ◽  
Relevant Literature ◽  
Plain Film ◽  
Meconium Peritonitis ◽  
Histological Features ◽  
Abdominal Plain Film ◽  
Scrotal Ultrasound

Meconium periorchitis (MPO) is an uncommon entity associated with healed meconium peritonitis. The typical presentation is a soft hydrocele at birth which becomes harder in weeks as the meconium calcifies. A lack of awareness of this rare disease may lead to unnecessary surgery of scrotal masses. It can resolve spontaneously without compromising the testicle. Scrotal ultrasound is the mainstay of imaging and abdominal plain film is less sensitive but can help in the diagnosis. We report a case of a meconium periorchitis and discuss its radiological and histological features. We also review the relevant literature.

Optimization of laser cladding of cold spray coatings with B4C and Ni powders

2017 ◽  
Author(s):  
V. M. Fomin ◽  
A. A. Golyshev ◽  
A. G. Malikov ◽  
A. M. Orishich ◽  
A. A. Filippov ◽  
...  
Keyword(s):  
Cold Spray ◽  
Laser Cladding ◽  
Spray Coatings

Micro-Porous Coatings and Enhanced CHF for Downward Facing Boiling During Passive Emergency Reactor Cooling

2016 ◽  
Author(s):  
Albert E. Segall ◽  
Faruk A. Sohag ◽  
Faith R. Beck ◽  
Lokanath Mohanta ◽  
Fan-Bill Cheung ◽  
...  
Keyword(s):  
Cold Spray ◽  
Heat Removal ◽  
Porous Coating ◽  
Porous Coatings ◽  
Spray Coatings ◽  
Spray Process ◽  
External Cooling ◽  
Loss Of Coolant Accident ◽  
Lower Head ◽  
Viable Approach

During a Reaction Initiated Accident (RIA) or Loss of Coolant Accident (LOCA), passive external-cooling of the reactor lower head is a viable approach for the in-vessel retention of Corium; while this concept can certainly be applied to new constructions, it may also be viable for operational systems with existing cavities below the reactor. However, a boiling crisis will inevitably develop on the reactor lower head owing to the occurrence of Critical Heat Flux or CHF that could reduce the decay heat removal capability as the vapor phase impedes continuous boiling. Fortunately, this effect can be minimized for both new and existing reactors through the use of a Cold-Spray delivered, micro-porous coating that facilitates the formation of vapor micro-jets from the reactor surface. The micro-porous coatings were created by first spraying a binary mixture with the sacrificial material then removed via etching. Subsequent quenching experiments on uncoated and coated hemispherical surfaces showed that local CHF values for the coated vessel were consistently higher relative to the bare surface. Moreover, it was observed for both coated and uncoated surfaces that the local rate of boiling and local CHF limit varied appreciably along the outer surface. Nevertheless, the results of this intriguing study clearly show that the use of Cold Spray coatings could enhance the local CHF limit for downward facing boiling by more than 88%. Moreover, the Cold-Spray process is amenable to coating the lower heads of operating reactors.

scholarly journals Measures and programs for preventing violence in school

2004 ◽  
pp. 168-187 ◽  
Author(s):  
Slobodanka Gasic-Pavisic
Keyword(s):  
Literature Review ◽  
Local Level ◽  
Relevant Literature ◽  
Violent Behavior ◽  
School Staff ◽  
Professional Literature ◽  
Safe Place ◽  
Prevention Of Violence ◽  
The World ◽  
Insight Into

In many countries across the world schools are no longer a safe place for both students and school staff. Violence in school is an issue scarcely studied in Serbia and there are few articles in domestic professional literature. At national and local level there are not developed strategies nor programs for preventing violence among students in our schools. There are no data about planned, systematic and organized prevention of violence in the practice of our schools. The data obtained by investigations indicate that it is necessary to apply adequate programs for preventing violence among students in our schools, despite the finding that violence in school is not that much conspicuous and serious problem like in other countries (USA Israel, Japan, Austria, Germany). On the basis of relevant literature review the present paper high?lights some very popular and less notorious measures and prevention programs applied in various countries. The aim of the paper is to transmit basic and essential pieces of information so as to gain insight into diverse existing approaches to prevention of violent behavior in school hopefully to encourage our schools to pay more attention to preventing violence in school as soon as possible before it is too late.

scholarly journals THE FIRST 6TH-MONTH NUTRITIONAL STATUS OF A FULL-TERM CHILD IN EXCLUSIVE BREASTFEEDING: A LITERATURE REVIEW

2021 ◽  
Vol 7 (1) ◽  
pp. 1-21
Author(s):  
Relisa Nuris Shifa ◽  
Sulistiawati ◽  
Endyka Erye Frety ◽  
Astika Gita Ningrum
Keyword(s):  
Literature Review ◽  
Nutritional Status ◽  
Quality Assessment ◽  
Exclusive Breastfeeding ◽  
Head Circumference ◽  
Assessment Tool ◽  
Research Question ◽  
Relevant Literature ◽  
Child Growth ◽  
Full Term

Background: The first six months after birth are part of the first 1000 days, a golden period for child development. In this period, the child needed proper nutrition to support optimal development and as nutrition programming. WHO recommends exclusive breastfeeding (EBF) for the first 6th-month. Adequacy of nutrition and optimal growth can be assessed using the nutritional status.  Aim: This study analyzes the relationship between EBF for the first 6 months with the nutritional status of a full-term infant aged 0-6 months. The nutritional status assessed using anthropometric measurements and child growth standards. Methods: This type of literature review research uses the PRISMA, PICO, and Boolean Operator methods. The research question with PICO standard "What is a relationship between exclusive breastfeeding practice and nutritional status of children aged 0-6 months?". Relevant literature was obtained from 8 databases: Scopus, Portal Garuda, Proquest, Mendeley, Pubmed, Oxford, Science Direct, and Sage. Literature was limited to the last 10 years. There are 6 relevant pieces of literature included for review. The literature quality assessment uses a quantitative study quality assessment tool released by the EPHPP (Effective Public Health Practice Project) and produces 5 pieces of literature worthy of review.  Results: From 5 kinds of literature, there were various indicators of nutritional status such as weight-for-age (WAZ), length-for-age (LAZ), weight-for-length (WLZ), Body Mass Index (BMI)-for-age, and head circumference (HC)-for-age. The results were dominated by insignificant results, except the HC-for-age indicator stated that there were significant results. The author explores the causes of insignificant results. Explores based on the indicators that include in studies, the information based on studies, and the possible consequences that adjusted to the data based on the studies. The Author found that the mother plays an important role in the production and provision of breast milk. The quality of breastmilk depends on the mother, also how she gives it to their infant. It has to be based on the WHO recommendation. Conclusion: The result of these studies affirms that EBF didn't significantly affect the indicators of WAZ, LAZ, WLZ, and BMI-for-age, but significantly affected the head circumference-for-age indicator.

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