Activity Promotion of Rh8–xCoxP4 Bimetallic Phosphides in Styrene Hydroformylation: Dual Influence of Adsorption and Surface Reaction

ACS Catalysis ◽  
2021 ◽  
pp. 9850-9859
Author(s):  
Boyang Liu ◽  
Yu Wang ◽  
Ning Huang ◽  
Xiaocheng Lan ◽  
Tiefeng Wang
Keyword(s):  
Surface Reaction ◽  
Activity Promotion ◽  
Bimetallic Phosphides

The Relationship between Body Image and Exercise Adherence in Fitness Centre Exercising Sample

2018 ◽  
Vol 1 (80) ◽  
Author(s):  
Rasa Jankauskienė ◽  
Brigita Miežienė
Keyword(s):  
Body Image ◽  
Exercise Adherence ◽  
Physical Activity Promotion ◽  
Well Being ◽  
Social Physique Anxiety ◽  
Men And Women ◽  
Activity Promotion ◽  
And Gender ◽  
Body Self ◽  
The Relationship

Research background and hypothesis. The analysis of factors which might infl uence exercise adherence is important issue for physical activity promotion. Studies show that exercisers’ body image is important factor associated with well being, exercise motivation and specifi c exercise–related behaviour.Research aim was is to examine the relationship between exercise adherence, body image and social physique anxiety in a sample of fi tness centre participants. Research methods. Members of fi tness centres (n = 217, 66 of them were women) provided their answers on exercise experience, in three subscales (appearance evaluation, appearance orientation and overweight preoccupation) of The Multidimensional Body-Self Relations Questionnaire (MBSRQ-AS; Brown et al., 1990) and Social Physique Anxiety Scale (SPAS; Hart et al., 1989). Mean age of the sample was 29.02 (9.85) years (range = 18–68 years).Research results. Women demonstrated higher appearance orientation, overweight preoccupation and social physique anxiety compared to men. However, we observed no signifi cant differences in appearance evaluation, appearance orientation and overweight preoccupation in the groups of different exercise experience of men and women. When overweight respondents (≥ 25 kg / m²) were excluded from the analysis, there were no statistically signifi cant differences observed in body image and social physique anxiety in exercise experience groups of men and women. Exercising longer than 6 years signifi cantly predicted overweight preoccupation [95% CI: 1.25–16.94] controlled by age and gender. Discussion and conclusions. Exercising men demonstrated more positive body image and lower social physique anxiety compared to women, except for appearance evaluation. There were observed no body image and social physique relationships with exercise adherence observed in the sample of fi tness centre participants, however, exercise experience longer than 6 years predicted overweight preoccupation.Keywords: body image concerns, exercise experience, self-presentation.

Modeling the Electrical Double Layer to Understand the Reaction Environment in a CO2 Electrocatalytic System

2019 ◽  
Author(s):  
Divya Bohra ◽  
Jehanzeb Chaudhry ◽  
Thomas Burdyny ◽  
Evgeny Pidko ◽  
wilson smith
Keyword(s):  
Electric Field ◽  
Double Layer ◽  
Electrical Double Layer ◽  
Surface Reaction ◽  
Catalyst Surface ◽  
Local Reaction ◽  
Reaction Diffusion ◽  
Alkali Metal Cations ◽  
Applied Potential ◽  
Critical Aspect

<p>The environment of a CO<sub>2</sub> electroreduction (CO<sub>2</sub>ER) catalyst is intimately coupled with the surface reaction energetics and is therefore a critical aspect of the overall system performance. The immediate reaction environment of the electrocatalyst constitutes the electrical double layer (EDL) which extends a few nanometers into the electrolyte and screens the surface charge density. In this study, we resolve the species concentrations and potential profiles in the EDL of a CO<sub>2</sub>ER system by self-consistently solving the migration, diffusion and reaction phenomena using the generalized modified Poisson-Nernst-Planck (GMPNP) equations which include the effect of volume exclusion due to the solvated size of solution species. We demonstrate that the concentration of solvated cations builds at the outer Helmholtz plane (OHP) with increasing applied potential until the steric limit is reached. The formation of the EDL is expected to have important consequences for the transport of the CO<sub>2</sub> molecule to the catalyst surface. The electric field in the EDL diminishes the pH in the first 5 nm from the OHP, with an accumulation of protons and a concomitant depletion of hydroxide ions. This is a considerable departure from the results obtained using reaction-diffusion models where migration is ignored. Finally, we use the GMPNP model to compare the nature of the EDL for different alkali metal cations to show the effect of solvated size and polarization of water on the resultant electric field. Our results establish the significance of the EDL and electrostatic forces in defining the local reaction environment of CO<sub>2</sub> electrocatalysts.</p>

Experiences in physical activity promotion in health care settings for primary prevention in the UK

2014 ◽  
Vol 62 (2) ◽  
Keyword(s):  
Physical Activity ◽  
Primary Care ◽  
Health Professionals ◽  
Controlled Trial ◽  
Full Range ◽  
Tertiary Care ◽  
Physical Activity Promotion ◽  
Community Based ◽  
Activity Promotion ◽  
Randomised Controlled

In addition to the delivery of primary care services, recent changes to the NHS in the United Kingdom have placed increasing responsibility on GPs for the commissioning of the full range of health services from prevention through to clinical interventions and rehabilitation. Whilst historically there has always been an expectation that primary care professionals were ideally placed to provide support for prevention as well as treatment, their active engagement in the promotion of physical activity has remained largely superficial. With notable exceptions where individuals have a personal interest or commitment, the majority of health professionals tend to limit themselves to peremptory non-specific advice at best, or frequently don’t broach the subject at all. There are a number of reasons for this including increasing time pressures, a general lack of knowledge, limited evidence and concerns about litigation in the event of an adverse exercise induced event. However in the 1990s there was a surge of interest in the emerging “Exercise on Prescription” model where patients could be referred to community based exercise instructors for a structured “prescription” of exercise in community leisure centres. Despite the continuing popularity of the model there remain problems particularly in getting the active support of health professionals who generally cite the same barriers as previously identified. In an attempt to overcome some of these problems Wales established a national exercise referral scheme with an associated randomised controlled trial. The scheme evaluated well and had subsequently evolved with new developments including integration with secondary and tertiary care pathways, accredited training for exercise instructors and exit routes into alternative community based exercise opportunities.

Design Intervention Assessment of Urban Public Park for Physical Activity Promotion in Bangkok, Thailand

2020 ◽  
Vol 11 (1) ◽  
pp. 4-4
Author(s):  
Sigit Arifwidodo ◽  
Orana Chandrasiri
Keyword(s):  
Physical Activity ◽  
Urban Areas ◽  
Urban Landscape ◽  
Physical Activity Promotion ◽  
Well Being ◽  
Pilot Project ◽  
Public Park ◽  
Activity Promotion ◽  
Wide Range ◽  
Design Intervention

Public Park is considered one of the essential settings for physical activity, especially in urban areas. Parks support physical activity through their accessibility, their provision to facilitate active pursuits; their capacity to provide opportunities to a wide range of users; and their semi-permanent nature. The paper explores the design intervention assessment of Benchakitti Park, which serves as the pilot project for active park and showcase during the past ISPAH 2016 conference. The objective of the paper is to understand the health and well-being benefits of an urban park in increasing PA levels of urban population and promoting a healthy and active lifestyle. Keywords: Public park; physical activity; urban landscape design; public health; SOPARC

Non-Toxic Environment for Ferritic Nitrocarburising Process

2018 ◽  
Vol 69 (9) ◽  
pp. 2416-2419
Author(s):  
Mihai Branzei ◽  
Mihai Ovidiu Cojocaru ◽  
Leontin Nicolae Druga ◽  
Florica Tudose ◽  
Roxana Trusca
Keyword(s):  
Surface Reaction ◽  
Effective Solution ◽  
Reaction Products ◽  
Toxic Reaction ◽  
Wide Range ◽  
Toxic Environment ◽  
Thermochemical Processing ◽  
Surface Saturation ◽  
Gas Molecules ◽  
Toxic Components

Experimental research aimed to find a solution for replacing components with high toxicity (or generating such components as a result of reactions occurring in the environment at processing temperatures) from the environments used for ferritic nitrocarburising process (FNCP) with non-hazardous components, but extremely active during the process. In the temperature range in which this type of processing is applied (lower than the eutectoid transformation temperature in the Fe-N phase diagram), the most commonly used media are liquid or gaseous; liquid ones contain toxic components (sodium or potassium cyanates/cyanides), and gaseous ones require complex equipments. Packing is extremely rarely used, but in this case pack-mix contain toxic components (15 � 20 wt.% sodium or potassium ferrocyanide). Urea also called carbamide (CO (NH2)2) is the active component in the pack-mixing proposed to be used for FNCP. Carbamide is used in low temperature cyanidation thermochemical heat treatment (liquid FNC), together with sodium or potassium carbonates, resulting in very toxic reaction products (sodium or potassium cyanates). Compared to cyanidation, in the version proposed in the paper, the carbamide does not react with carbonates because they are not found in the composition of the environment but decomposes in the presence or absence of oxygen (by a disproportionation reaction) with the formation of some gas molecules interesting for the process. It has been concluded that the use of carbamide together with two other components, activated charcoal (having a triple role - dispersing, storage, surface saturation) and respectively ammonium chloride as surface reaction activator, is an effective solution for achieving the desired goals by applying this type of thermochemical processing to a wide range of products made of quality steels up to alloy miscellaneous steels.

Investigating a Message Tailoring Strategy to Improve Efficacy of Activity Promotion Interventions: A Study Protocol (Preprint)

2016 ◽  
Author(s):  
Leila Sadat Rezai ◽  
Catherine Marie Burns
Keyword(s):  
Physical Activity ◽  
Regulatory Focus ◽  
Message Framing ◽  
Physical Activity Behaviour ◽  
Activity Level ◽  
Regulatory Focus Theory ◽  
Cross Sectional ◽  
Physically Active ◽  
Activity Promotion ◽  
Focus Theory

BACKGROUND There have been challenges in designing effective behaviour-change interventions, including those that promote physical activity. One of the key reasons is that many of those systems do not account for individuals’ characteristics and their psychological differences, which affect their approach toward adopting target behaviour. For decades, tailoring has been used as a common technique to effectively communicate health-related information to persuade people to follow a healthier living. However, its use in the design of persuasive technologies has not been adequately investigated. OBJECTIVE The objective of this research is to explore the effects of tailoring when it is grounded in Higgins’ regulatory focus theory. METHODS A combination of cross-sectional and longitudinal studies has been proposed to examine how individuals’ intention to become more physically active would be affected by receiving health messages that may or may not match their self-regulatory orientation. The research would also subjectively, as well as objectively, measures the changes in individuals’ physical activity level. RESULTS The anticipated completion date for the consequent studies is December 2016. CONCLUSIONS In this article, the importance of refining message-framing research questions and a stepwise approach to develop an efficient experimental design to examine a new tailoring strategy is discussed. A set of small studies is proposed that would inform the best approach to design the principal experiment. The findings of principal experiment will provide a deeper insight into the relationship between regulatory-focus theory, persuasive message construction, and individuals’ physical activity behaviour.

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