177,560 research outputs found
Waste-to-Energy as a Method of Refuse Disposal: An Analysis of Sustainable Technologies and Their Environmental Impact
No full textNowadays, waste-to-energy (WtE) is considered the most effective disposal system for nonrecyclable materials. There is general concern with regard to potential environmental and health risks connected with WtE plants. Data from epidemiological studies, conducted since the 1980s, had shown that old-generation plants have a negative environmental impact. Owing to innovations in both technology and methodology involved in waste processing, new-generation WtE plants have considerably mitigated such negative impact.
The aim of the study is to assess how legislation, technological innovation, and mitigation strategies can help and reduce the repercussions that waste-to-energy might have on both the environment and people’s health.
The first step in this study consisted in investigating the current European and Italian legislation, as well as the operating mechanisms and technologies available to mitigate environmental impacts. Successively, the second step consisted in verifying their actual effectiveness when applied to the most recent plants. In particular, ten modern incinerations, new or restored in the last decade, were examined in detail.
The case studies’ analysis and their comparison showed that, when adequately submitted to a health impact assessment (HIA) and in presence of valid monitoring plans, the most advanced facilities are able to keep emissions way below the limits prescribed by the law, mitigating environmental and health impacts. In addition, the study highlighted some areas of possible future interventions and actions.
Finally, the outcome of the research is to propose a set of guidelines, legal tools, and appropriate technologies, as exportable and scalable healthy strategies in several contexts
sj-docx-1-eae-10.1177_0958305X231199242 - Supplemental material for Biodiesel production by transesterification of low-cost feedstock (waste cooking oil) using mesoporous cubic-MgO nanocatalyst: Optimization using response surface methodology
No full textSupplemental material, sj-docx-1-eae-10.1177_0958305X231199242 for Biodiesel production by transesterification of low-cost feedstock (waste cooking oil) using mesoporous cubic-MgO nanocatalyst: Optimization using response surface methodology by Amirthavalli Velmurugan, Anita R. Warrier, and Baskar Gurunathan in Energy & Environment</p
sj-docx-2-eae-10.1177_0958305X231199242 - Supplemental material for Biodiesel production by transesterification of low-cost feedstock (waste cooking oil) using mesoporous cubic-MgO nanocatalyst: Optimization using response surface methodology
No full textSupplemental material, sj-docx-2-eae-10.1177_0958305X231199242 for Biodiesel production by transesterification of low-cost feedstock (waste cooking oil) using mesoporous cubic-MgO nanocatalyst: Optimization using response surface methodology by Amirthavalli Velmurugan, Anita R. Warrier, and Baskar Gurunathan in Energy & Environment</p
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Effect of S-diclofenac, a novel hydrogen sulfide releasing derivative inhibit rat vascular smooth muscle cell proliferation
No full textS-diclofenac (2-[(2,6-dichlorophenyl) amino] benzene acetic acid 4-(3H-1,2,dithiol-3-thione-5-yl) phenyl ester) is a novel molecule comprising a hydrogen sulfide (H2S)-releasing dithiol-thione moiety attached by an ester linkage to diclofenac. Effect of S-diclofenac (H2S donor) on cell proliferation was investigated on the primary and immortalized rat aortic vascular smooth muscle cells (SMC). Smooth muscle cell proliferation has been considered as a key event in vascular injury in diseases such as atherosclerosis and restenosis after invasive intervention. Clonogenic cell survival assay showed a dose dependent (10-100 microM) decrease in cell survival. Flow cytometric analysis showed that the asynchronized cells are more sensitive than the cells that are synchronized and revealed that the cells in G1 phase are not affected by the treatment of the S-diclofenac. Asynchronized smooth muscle cells treated with the S-diclofenac showed an increase in apoptotic cell death. S-diclofenac treatment also resulted in stabilization of p53 coupled with the induction of downstream proteins such as p21, p53AIP1 and Bax. S-diclofenac did not up-regulate cell levels of the antiapoptotic protein Bcl-2. However, when the cells are synchronized a stimulatory effect of cell growth with the decrease in apoptosis, p53 and p21 was evident. S-diclofenac inhibits smooth muscle cell growth and may play a role in the lesion formation at sites of the vascular injury. The present results suggest that S-diclofenac may be useful for the prevention of smooth muscle cell proliferation in diseases such as vascular obstructive and restenosis
sj-docx-1-pie-10.1177_09544089231223035 - Supplemental material for Optimization of fused deposition modeling parameters to fabricate morphogenesis light weight structure with high tensile and compression strength
No full textSupplemental material, sj-docx-1-pie-10.1177_09544089231223035 for Optimization of fused deposition
modeling parameters to fabricate morphogenesis light weight structure
with high tensile and compression strength by R Baskar, V Muthukumaran, S Nandhakumar and S Arivazhagan in Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</p
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Primal Infon Logic: Derivability in Polynomial Time
No full textPrimal infon logic (PIL), introduced by Gurevich and Neeman in 2009, is a logic for authorization in distributed systems. It is a variant of the (and, implies)-fragment of intuitionistic modal logic. It presents many interesting technical challenges -- one of them is to determine the complexity of the derivability problem. Previously, some restrictions of propositional PIL were proved to have a linear time algorithm, and some extensions have been proved to be PSPACE-complete. In this paper, we provide an O(N^3) algorithm for derivability in propositional PIL. The solution involves an interesting interplay between the sequent calculus formulation (to prove the subformula property) and the natural deduction formulation of the logic (based on which we provide an algorithm for the derivability problem)
Letter from R. R. Zellick, Assistant Trust Officer, Anglo California National Bank of San Francisco, to Joseph R. Goodman, October 2, 1942
No full textLetter from R. R. Zellick, Assistant Trust Officer at The Anglo California National Bank of San Francisco, to Joseph R. Goodman, regarding property owned by Dave Tatsuno. Zellick mentions a dispute between current tenants and Tatsuno, and that Tatsuno has asked Goodman to help locate trustworthy tenants.Personal correspondence, organizational records, government documents, publications, and other papers created or collected by Joseph R. Goodman documenting the forced removal and incarceration of Japanese Americans during World War II, as well as organized resistance to incarceration. Included in the collection are records of the Japanese Young Men's Christian Association and the Japanese American Citizens' League in San Francisco, including papers of the Japanese YMCA's executive secretary Lincoln Kanai; Sakai family papers; Goodman's correspondence to and from Japanese American incarcerees, organizations opposing forced removal and incarceration of Japanese Americans, the War Relocation Authority, and others; publications, photographs, and ephemera from the Topaz Relocation Center, where Goodman taught high school; War Relocation Authority records and publications; and newspaper clippings, pamphlets, and reports about forced removal and incarceration created by various government, religious, and civic organizations, in California and nationwide
- …
