scholarly journals Elucidating the important role of surface-adsorbed oxygen for improving the sensing of formaldehyde by ZnO nanostructures

2021 ◽  
Author(s):  
Sherif Abdulkader Tawfik ◽  
Hang Tran ◽  
Michelle Jeanette Sapountzis Spencer
Keyword(s):  
Surface Defects ◽  
Health And Safety ◽  
Adsorbed Oxygen ◽  
Zno Nanostructures ◽  
High Importance ◽  
Surrounding Environment ◽  
Pollutant Gases ◽  
Effect Of Surface

Detection of pollutant gases, such as formaldehyde (HCHO), in our homes and surrounding environment is of high importance for our health and safety. The effect of surface defects and specifically...

Effects of Surface Layer Defects and Adsorbed Oxygen on TiO2-Rutile Schottky Barriers

1981 ◽  
Vol 5 ◽  
Author(s):  
M. Levinson
Keyword(s):  
Surface Defects ◽  
Schottky Barriers ◽  
Adsorbed Oxygen ◽  
Crystal Surfaces ◽  
Single Crystal Surfaces ◽  
Surface Conditions ◽  
Ohmic Behavior ◽  
Al Metallization ◽  
Tio2 Rutile

ABSTRACTThe electronic properties of TiO2 surfaces are of interest to further understanding of grain boundary effects in TiO2 and ZnO based varistor devices. Schottky barriers have been fabricated by Au or Al metallization on Nb doped TiO2-rutile [001] single crystal surfaces. Surface conditions included the presence or absence of either mechanical polishing induced surface defects and/or adsorbed oxygen. I­V measurements on Au samples indicate that surface defects yield ohmic behavior, but the defects may be electrically compensated by adsorbed oxygen to give non-ohmic I­V curves. All Al junctions show ohmic behavior which is interpreted in terms of reaction with surface oxygen. These results explain the necessity of firing varistor materials in an oxidizing atmosphere and suggest that the role of additives in these materials is to stabilize the oxygen concentration at the grain boundaries.

scholarly journals Does Employee Care Trigger Innovation Under a Healthy and Safe Working Environment? Evidence from the Pharmaceutical Industry in China

Healthcare ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 194
Author(s):  
Minghui Yang ◽  
Qian Lin ◽  
Petra Maresova
Keyword(s):  
Safety Management ◽  
Positive Impact ◽  
Health And Safety ◽  
Working Environment ◽  
Firm Innovation ◽  
Corporate Managers ◽  
Pharmaceutical Firms ◽  
Corporate Ability ◽  
Safe Working

Sustainability of the workforce becomes a crucial issue, of which responsible care for employees can increase job satisfaction and human capital that impact corporate ability to absorb and generate new knowledge. Firms are obligated to provide a healthy and safe working environment for their employees, but it may in turn hinder innovation due to rigid and structured institutional regulations. Drawing on data of 308 China’s pharmaceutical firms from 2010 to 2017, we investigated whether employee care can trigger innovation under corporate adoption of the occupational health and safety management system (OHSMS). Our results suggest that both employee care and OHSMS adoption have a positive impact on innovation. Moreover, the positive relationship between employee care and innovation was more pronounced in firms that had adopted the OHSMS certification. These findings are valuable to policymakers and corporate managers in emerging economies through corroborating the important role of workforce sustainability in facilitating firm innovation.

scholarly journals Biomechanical Properties of Cancer Cells

Cells ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 887
Author(s):  
Gaël Runel ◽  
Noémie Lopez-Ramirez ◽  
Julien Chlasta ◽  
Ingrid Masse
Keyword(s):  
Cancer Cells ◽  
Cancer Diagnosis ◽  
Crucial Role ◽  
Biomechanical Properties ◽  
Supplementary Information ◽  
Cancer Cell Growth ◽  
Diagnosis And Prognosis ◽  
Surrounding Environment ◽  
Surrounding Extracellular Matrix

Since the crucial role of the microenvironment has been highlighted, many studies have been focused on the role of biomechanics in cancer cell growth and the invasion of the surrounding environment. Despite the search in recent years for molecular biomarkers to try to classify and stratify cancers, much effort needs to be made to take account of morphological and nanomechanical parameters that could provide supplementary information concerning tissue complexity adaptation during cancer development. The biomechanical properties of cancer cells and their surrounding extracellular matrix have actually been proposed as promising biomarkers for cancer diagnosis and prognosis. The present review first describes the main methods used to study the mechanical properties of cancer cells. Then, we address the nanomechanical description of cultured cancer cells and the crucial role of the cytoskeleton for biomechanics linked with cell morphology. Finally, we depict how studying interaction of tumor cells with their surrounding microenvironment is crucial to integrating biomechanical properties in our understanding of tumor growth and local invasion.

Protecting the health and safety of the paramedic workforce in Australia: The role of cohort studies with new recruits

2021 ◽  
Author(s):  
Amy C Reynolds ◽  
Meagan E Crowther ◽  
Sally A Ferguson ◽  
Jessica L Paterson ◽  
Chris Howie ◽  
...  
Keyword(s):  
Cohort Studies ◽  
Health And Safety ◽  
New Recruits

scholarly journals Microbial-Driven Stabilisation of Archaeological Iron Artefacts

2021 ◽  
Vol 2 (2) ◽  
pp. 274-292
Author(s):  
Sarah James ◽  
Edith Joseph
Keyword(s):  
Health And Safety ◽  
Chloride Content ◽  
Key Factors ◽  
Passivation Layers ◽  
Archaeological Iron ◽  
Initial Results ◽  
Sulphur Species ◽  
Partial Success ◽  
Made In

The instability of iron artefacts is rooted in salt contamination during burial and damages associated with exposure to alternative oxygen levels and high relative humidity once excavated. While a combination of chemical and mechanical treatments is utilised to remove the harmful ions (chlorides, sulphur species) and excess bulky corrosion products, these methods can be hazardous for conservation staff’s health, have limited success, or require extensive treatment times. Bio-based treatments provide a potentially greener alternative for removing damaging corrosion and creating biogenic mineral passivation layers, thus remediating concerns over costs, duration, and health and safety. Pseudomonas putida mt-2 (KT2440) is capable of utilising iron under certain conditions and for phosphating mild steel; however, applications have not been made in the cultural heritage sector. To address the potential of using bacteria for conservation purposes, Pseudomonas was assessed for both the bioremediation of salt contaminates and the production of a passivation layer suitable for iron artefacts, with specific conservation concerns in mind. Key factors for optimisation include the role of agitation, chloride content, and oxygen content on bacterial growth and biomineralisation. The initial results indicate a growth preference, not reliance, for NaCl and agitation with partial success of bioconversion of a mineral source.

Statutory Safety Representatives and Safety Committees: Legal and Industrial Relations Implications

1982 ◽  
Vol 24 (3) ◽  
pp. 337-364 ◽  
Author(s):  
W.B. Creighton
Keyword(s):  
Industrial Relations ◽  
Health And Safety ◽  
Safety Issues ◽  
Statutory Provision ◽  
The United Kingdom ◽  
Sufficient Detail ◽  
Structured System ◽  
Safety Committees ◽  
Practical Implications

This article examines the increasingly important issue of the role of statutory safety representatives and safety committees in helping to promote and protect the health, safety and welfare of the Australian workforce. It consists first of an examination of the development of statutory provision in this area in the United Kingdom, culminating in the passing of the Health and Safety at Work Act 1974 and the introduction of the far-reaching Safety Representatives and Safety Committees Regulations of 1977. It then describes and analyses the reception of these provisions, and the philosophy which underpins them, in Australia. Thirdly, it attempts to identify and discuss some of the more important legal and practical implications of this kind of statutory provision. There is reason to suppose that some of these issues have not been analysed in sufficient detail in either Britain or Australia, but overall it is clear that a properly structured system of statutory safety representatives/com mittees can play an important and constructive part in helping to promote a proper awareness of health and safety issues in this country.

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