scholarly journals The impact of surface properties on photovoltaics' colour angular sensitivity: A comparison study for façade integration

2021 ◽  
Author(s):  
Changying Xiang ◽  
Phil Green ◽  
Barbara Szybinska Matusiak
Keyword(s):  
Surface Properties ◽  
Comparison Study ◽  
Angular Sensitivity ◽  
The Impact

scholarly journals Dye Separation and Antibacterial Activities of Polyaniline Thin Film-Coated Poly(phenyl sulfone) Membranes

Membranes ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 25
Author(s):  
Javed Alam ◽  
Arun Kumar Shukla ◽  
Mohammad Azam Ansari ◽  
Fekri Abdulraqeb Ahmed Ali ◽  
Mansour Alhoshan
Keyword(s):  
Zeta Potential ◽  
Surface Properties ◽  
Antibacterial Activities ◽  
Pani Film ◽  
Force Microscopy ◽  
Water Permeation ◽  
Membrane Pores ◽  
Membrane Performance ◽  
Phenyl Sulfone ◽  
The Impact

We fabricated a nanofiltration membrane consisting of a polyaniline (PANI) film on a polyphenylsulfone (PPSU) substrate membrane. The PANI film acted as a potent separation enhancer and antimicrobial coating. The membrane was analyzed via scanning electron microscopy and atomic force microscopy to examine its morphology, topography, contact angle, and zeta potential. We aimed to investigate the impact of the PANI film on the surface properties of the membrane. Membrane performance was then evaluated in terms of water permeation and rejection of methylene blue (MB), an organic dye. Coating the PPSU membrane with a PANI film imparted significant advantages, including finely tuned nanometer-scale membrane pores and tailored surface properties, including increased hydrophilicity and zeta potential. The PANI film also significantly enhanced separation of the MB dye. The PANI-coated membrane rejected over 90% of MB with little compromise in membrane permeability. The PANI film also enhanced the antimicrobial activity of the membrane. The bacteriostasis (BR) values of PANI-coated PPSU membranes after six and sixteen hours of incubation with Escherichia coli were 63.5% and 95.2%, respectively. The BR values of PANI-coated PPSU membranes after six and sixteen hours of incubation with Staphylococcus aureus were 70.6% and 88.0%, respectively.

scholarly journals Pilot testing an intervention to educate and promote nutritious choices at food pantries

2021 ◽  
Author(s):  
Sarah L. McKee ◽  
Eminet Abebe Gurganus ◽  
Abiodun T. Atoloye ◽  
Ran Xu ◽  
Katie Martin ◽  
...  
Keyword(s):  
Food Insecurity ◽  
Diet Quality ◽  
Food System ◽  
Saturated Fat ◽  
Comparison Study ◽  
Regression Analyses ◽  
Food Pantry ◽  
Food Pantries ◽  
Client Choice ◽  
The Impact

Abstract Aim This study aimed to assess the impact of the Supporting Wellness at Pantries (SWAP) system on client food selections at a food pantry. Subject and methods In a pre–post comparison study design, a client-choice food pantry implemented SWAP by reorganizing its inventory to promote healthy options. Each product was ranked as “choose often” (green), “sometimes” (yellow), or “rarely” (red) based on saturated fat, sodium, and sugar. Signage was added to indicate each item’s SWAP rank and healthier foods were placed at eye level. Client food baskets were assessed at time 1 (n = 121) and time 2 (n = 101). The proportions of green and red foods selected were compared using regression analyses. Results The regression analyses showed that the proportion of green foods selected by clients increased by 11% (p < 0.001) and the proportion of red foods selected decreased by 7% (p < 0.001) after SWAP was implemented (n = 222). Conclusions SWAP has the potential to positively shift client choices among the items available in a food pantry setting. SWAP is one component of a suite of changes to the charitable food system that have the potential to alleviate food insecurity, improve diet quality, and assist clients in managing diet-related diseases.

Map Width Enhancement Technique for a Turbocharger Compressor

2013 ◽  
Vol 136 (6) ◽  
Author(s):  
Subenuka Sivagnanasundaram ◽  
Stephen Spence ◽  
Juliana Early
Keyword(s):  
Performance Improvement ◽  
Peak Pressure ◽  
Pressure Ratio ◽  
Comparison Study ◽  
Heavy Duty ◽  
Recirculating Flow ◽  
Heavy Duty Diesel ◽  
And Performance ◽  
The Stability ◽  
The Impact

This paper presents an investigation of map width enhancement and the performance improvement of a turbocharger compressor using a series of static vanes in the annular cavity of a classical bleed slot system. The investigation has been carried out using both experimental and numerical analysis. The compressor stage used for this study is from a turbocharger unit used in heavy duty diesel engines of approximately 300 kW. Two types of vanes were designed and added to the annular cavity of the baseline classical bleed slot system. The purpose of the annular cavity vane technique is to remove some of the swirl that can be carried through the bleed slot system, which would influence the pressure ratio. In addition to this, the series of cavity vanes provides a better guidance to the slot recirculating flow before it mixes with the impeller main inlet flow. Better guidance of the flow improves the mixing at the inducer inlet in the circumferential direction. As a consequence, the stability of the compressor is improved at lower flow rates and a wider map can be achieved. The impact of two cavity vane designs on the map width and performance of the compressor was highlighted through a detailed analysis of the impeller flow field. The numerical and experimental study revealed that an effective vane design can improve the map width and pressure ratio characteristic without an efficiency penalty compared to the classical bleed slot system without vanes. The comparison study between the cavity vane and noncavity vane configurations presented in this paper showed that the map width was improved by 14.3% due to a significant reduction in surge flow and the peak pressure ratio was improved by 2.25% with the addition of a series of cavity vanes in the annular cavity of the bleed slot system.

The impact of preoperative opioid use on outcomes after elective colorectal surgery: A propensity-matched comparison study

Surgery ◽  
2019 ◽  
Vol 166 (4) ◽  
pp. 632-638 ◽  
Author(s):  
Alexander R. Cortez ◽  
Christopher M. Freeman ◽  
Nick C. Levinsky ◽  
Al-Faraaz Kassam ◽  
Koffi Wima ◽  
...  
Keyword(s):  
Colorectal Surgery ◽  
Comparison Study ◽  
Opioid Use ◽  
Elective Colorectal Surgery ◽  
Matched Comparison ◽  
The Impact

The impact of image test bank construction on radiographic interpretation outcomes: A comparison study

Radiography ◽  
2016 ◽  
Vol 22 (2) ◽  
pp. 166-170 ◽  
Author(s):  
M. Hardy ◽  
K. Flintham ◽  
B. Snaith ◽  
E.F. Lewis
Keyword(s):  
Comparison Study ◽  
Image Test ◽  
Radiographic Interpretation ◽  
The Impact

scholarly journals Evaluating the impact of COVID-19: A cohort comparison study of drug use and risky sexual behavior among sexual minority men in the U.S.A.

2020 ◽  
Vol 216 ◽  
pp. 108260 ◽  
Author(s):  
Tyrel J. Starks ◽  
S. Scott Jones ◽  
Daniel Sauermilch ◽  
Matthew Benedict ◽  
Trinae Adebayo ◽  
...  
Keyword(s):  
Sexual Behavior ◽  
Drug Use ◽  
Sexual Minority ◽  
Risky Sexual Behavior ◽  
Comparison Study ◽  
Sexual Minority Men ◽  
Cohort Comparison ◽  
Minority Men ◽  
The Impact

Impact performance of innovative corrugated polystyrene foam for bicycle helmets

2020 ◽  
pp. 0021955X2096521
Author(s):  
Somen K Bhudolia ◽  
Goram Gohel ◽  
Kah Fai Leong
Keyword(s):  
Energy Absorption ◽  
High Speed ◽  
Head Injuries ◽  
Expanded Polystyrene ◽  
The Novel ◽  
Comparison Study ◽  
Impact Performance ◽  
Bicycle Helmets ◽  
Weight Property ◽  
The Impact

Expanded Polystyrene (EPS) is a common material used to manufacture the inner foam liner of a bicycle helmet due to its outstanding energy absorption characteristics and light-weight property. The current research presents a novel corrugated expanded polystyrene (EPS) foam design concept which is used to enhance the impact dissipation of bicycle helmets from the safety standpoint to reduce head injuries and make them lighter. The baseline comparison study under impact for different foam configurations is compared with a conventional EPS foam sample without corrugation. Corrugated foam designs under current investigation are 12.5–20% lighter and provide up to 10% higher energy absorption. The details of the novel manufacturing concept, CPSC 1203 helmet impact tests, high-speed camera study to understand the differences in the failure mechanisms are deliberated in this paper.

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