scholarly journals Effective calcium doping at the B-site of BaFeO3−δ perovskite: towards low-cost and high-performance oxygen permeation membranes

2017 ◽  
Vol 5 (17) ◽  
pp. 7999-8009 ◽  
Author(s):  
Yao Lu ◽  
Hailei Zhao ◽  
Kui Li ◽  
Xuefei Du ◽  
Yanhui Ma ◽  
...  
Keyword(s):  
High Performance ◽  
Oxygen Permeability ◽  
Low Cost ◽  
Cost Effective ◽  
Oxygen Permeation ◽  
Effective Strategy ◽  
Highly Efficient ◽  
Cost Effective Strategy ◽  
Calcium Doping

A highly efficient and cost-effective strategy for doping Ca at the B-site of BaFeO3−δ was demonstrated to enhance oxygen permeability.

scholarly journals Biowaste-derived 3D honeycomb-like N and S dual-doped hierarchically porous carbons for high-efficient CO2 capture

RSC Advances ◽  
2019 ◽  
Vol 9 (40) ◽  
pp. 23241-23253 ◽  
Author(s):  
Weiwei Shi ◽  
Rongzhen Wang ◽  
Huili Liu ◽  
Binbin Chang ◽  
Baocheng Yang ◽  
...  
Keyword(s):  
Co2 Capture ◽  
Surface Functionalization ◽  
Cost Effective ◽  
Effective Strategy ◽  
Porous Carbons ◽  
Hierarchically Porous ◽  
Highly Efficient ◽  
Cost Effective Strategy ◽  
High Efficient

We proposed a facile and cost-effective strategy to prepare N/S dual-doped carbons with abundant micropores of <1 nm, appropriate proportion of meso/macropores and suitable surface functionalization for highly efficient CO2 capture.

The Cost-Effectiveness of the Management of Acute Sinusitis

2007 ◽  
Vol 21 (4) ◽  
pp. 444-451 ◽  
Author(s):  
Yoshimi Anzai ◽  
Jeffrey G. Jarvik ◽  
Sean D. Sullivan ◽  
William Hollingworth
Keyword(s):  
Societal Perspective ◽  
Clinical Guideline ◽  
Low Cost ◽  
Treatment Strategies ◽  
Cost Effective ◽  
Quality Adjusted Life Year ◽  
Acute Sinusitis ◽  
Effective Strategy ◽  
Targeting Therapy ◽  
Cost Effective Strategy

Background Sinusitis is a common medical disease with a tremendous economic impact on health care. Our objective was to determine the most cost-effective strategy for the management of acute sinusitis from the societal and payers’ perspectives. Methods A Markov disease simulation model was used for comparing four treatment strategies: (1) no antibiotic (Abx), (2) empiric Abx, (3) CT-based Abx, and (4) clinical guideline-based Abx. Results Empiric Abx treatment was the most cost-effective from the societal perspective. Clinical guideline-based treatment was the most cost-effective strategy from the payers’ perspective ($38,515/quality-adjusted life year). Cost and effectiveness of Abx, time lost from work, and prevalence of acute bacterial sinusitis are influential variables. Conclusion Empiric Abx treatment is a cost-effective strategy from the short-term societal perspective. However, Abx resistance will lead to increased costs and reduced efficacy of this strategy in the long-term. Clinical guidelines provide a low-cost method of targeting therapy.

Azo (Hydrazone) pigments: general principles

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Robert Christie
Keyword(s):  
High Performance ◽  
Metal Salt ◽  
Low Cost ◽  
Cost Effective ◽  
Precipitation Process ◽  
Ambient Temperatures ◽  
Technical Performance ◽  
Chemical Structures ◽  
General Chemical ◽  
Physical Form

Abstract This paper presents an overview of the general chemical principles underlying the structures, synthesis and technical performance of azo pigments, the dominant chemical class of industrial organic pigments in the yellow, orange, and red shade areas, both numerically and in terms of tonnage manufactured. A description of the most significant historical features in this group of pigments is provided, starting from the discovery of the chemistry on which azo colorants are based by Griess in the mid-nineteenth century, through the commercial introduction of the most important classical azo pigments in the early twentieth century, including products known as the Hansa Yellows, β-naphthol reds, including metal salt pigments, and the diarylide yellows and oranges, to the development in the 1950s and 1960s of two classes of azo pigments that exhibit high performance, disazo condensation pigments and benzimidazolone-based azo pigments. A feature that complicates the description of the chemical structures of azo pigments is that they exist in the solid state as the ketohydrazone rather than the hydroxyazo form, in which they have been traditionally been illustrated. Numerous structural studies conducted over the years on an extensive range of azo pigments have demonstrated this feature. In this text, they are referred to throughout as azo (hydrazone) pigments. Since a common synthetic procedure is used in the manufacture of virtually all azo (hydrazone) pigments, this is discussed in some detail, including practical aspects. The procedure brings together two organic components as the fundamental starting materials, a diazo component and a coupling component. An important reason for the dominance of azo (hydrazone) pigments is that they are highly cost-effective. The syntheses generally involve low cost, commodity organic starting materials and are carried out in water as the reaction solvent, which offers obvious economic and environmental advantages. The versatility of the approach means that an immense number of products may be prepared, so that they have been adapted structurally to meet the requirements of many applications. On an industrial scale, the processes are straightforward, making use of simple, multi-purpose chemical plant. Azo pigments may be produced in virtually quantitative yields and the processes are carried out at or below ambient temperatures, thus presenting low energy requirements. Finally, provided that careful control of the reaction conditions is maintained, azo pigments may be prepared directly by an aqueous precipitation process that can optimise physical form, with control of particle size distribution, crystalline structure, and surface character. The applications of azo pigments are outlined, with more detail reserved for subsequent papers on individual products.

A cost effective strategy to fabricate STA@PF@Cu2O hierarchical structure on wood surface: aimed at superhydrophobic modification

2021 ◽  
Vol 55 (2) ◽  
pp. 565-583
Author(s):  
Ke Zhan ◽  
Quanxiong Lu ◽  
Sengwei Xia ◽  
Congnan Guo ◽  
Sisi Zhao ◽  
...  
Keyword(s):  
Hierarchical Structure ◽  
Wood Surface ◽  
Cost Effective ◽  
Effective Strategy ◽  
Cost Effective Strategy

A cost effective strategy for managing GI bleeding secondary to peptic ulcer disease

1995 ◽  
Vol 108 (4) ◽  
pp. A18 ◽  
Author(s):  
I Hussain ◽  
WH Farrar ◽  
EJ Sofian ◽  
TF Bader ◽  
JD Strom ◽  
...  
Keyword(s):  
Peptic Ulcer ◽  
Peptic Ulcer Disease ◽  
Cost Effective ◽  
Effective Strategy ◽  
Gi Bleeding ◽  
Ulcer Disease ◽  
Cost Effective Strategy
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