Design of experimental composting of animal carcasses in universitary unit of treatment aimed a correct final disposition and soil improve

Author(s):  
J Fonseca ◽  
M Marchi ◽  
L Braz ◽  
A Cecílio ◽  
L Sacramento
Keyword(s):  
Recycling ◽  
2021 ◽  
Vol 6 (1) ◽  
pp. 22
Author(s):  
Mateus Manabu Abe ◽  
Marcia Cristina Branciforti ◽  
Michel Brienzo

The volume of discarded solid wastes, especially plastic, which accumulates in large quantities in different environments, has substantially increased. Population growth and the consumption pattern of societies associated with unsustainable production routes have caused the pollution level to increase. Therefore, the development of materials that help mitigate the impacts of plastics is fundamental. However, bioplastics can result in a misunderstanding about their properties and environmental impacts, as well as incorrect management of their final disposition, from misidentifications and classifications. This chapter addresses the aspects and factors surrounding the biodegradation of bioplastics from natural (plant biomass (starch, lignin, cellulose, hemicellulose, and starch) and bacterial polyester polymers. Therefore, the biodegradation of bioplastics is a factor that must be studied, because due to the increase in the production of different bioplastics, they may present differences in the decomposition rates.


2019 ◽  
Vol 39 (2) ◽  
Author(s):  
Andres Pavas ◽  
Nelson Arzola de la Peña

Never before has Engineering needed more from the support of society and society needed more from the advances of Engineering than now. However, there is a feeling of demotivation among the students to pursue Engineering programs, thus other careers are more desirable such as Administration, Economics, Journalism, Law and Humanities. In the first place, this occurs partially because technology is generally available to everyone, that is, everyone is a regular user of it, thus confusing its daily use (connect and use solutions) with the background complexity for creating and implementing it. In the second place, potential engineering studentsexpect education in technology with immediate practical activities and with the minimum of formal theory, because in summary everything is so easy to use that they think it is not necessary to make things difficult with a thoroughly understanding of how to conceive, manufacture, operate, perform and of the final disposition of equipment and technical systems. Finally, the frequent outcome of studying an Engineering career could be another reason, since recent graduates often do not have the skills and knowledge demanded by the labor market and are received with unattractive salaries, in addition to the discovery that graduates of other careerswith little technical and engineering preparation use technologies and turn them into highly profitable businesses.


2018 ◽  
Vol 50 (2) ◽  
pp. 358-361 ◽  
Author(s):  
L. Martínez-Alarcón ◽  
A. Ríos ◽  
A.I. López-Navas ◽  
A. Sáez-Acosta ◽  
G. Ramis ◽  
...  

Processes ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 231 ◽  
Author(s):  
Renata Xavier Alberico Freitas ◽  
Lara Aguiar Borges ◽  
Handray Fernandes de Souza ◽  
Fernando Colen ◽  
Alex Sander Rodrigues Cangussu ◽  
...  

The generation of large volumes of waste by industrial processes has become an object of study because of the necessity to characterize the composition of residues in order to suggest appropriate treatments and to minimize adverse environmental impacts. We performed analyses of total fixed and volatile solids, moisture, and chemical oxygen demand (COD). We found high organic matter content. We also measured physicochemical characteristics, including corrosivity, reactivity, and toxicity. Sewage sludge showed levels of chloride and sodium above the maximum allowed limits. These data suggest the potential for anaerobic digestion as a treatment option for sewage sludge and for its use as a biofertilizer.


1975 ◽  
Vol 29 (3) ◽  
pp. 585-616 ◽  
Author(s):  
Robert Pendley ◽  
Lawrence Scheinman ◽  
Richard W. Butler

“International safeguards” refer to a set of international agreements establishing control over the production, use, and final disposition of fissionable materials. Before the Non-Proliferation Treaty (NPT) went into effect, International Atomic Energy Agency (IAEA) safeguards had been applied to 75 reactors and ten other nuclear facilities under 51 different agreements. The design of the first regime was largely a function of political, strategic, and economic rather than technical considerations. After 1971, safeguards were made an integral part of the NPT, and became obligatory with respect to all peaceful nuclear activities in signatory states. Negotiations on the NPT safeguards regime focused on efforts to minimize the major asymmetrical costs that this implied, and particularly to meet the objections of major nonnuclear weapons states. The focus of controversy centered less on resistance to incursions on sovereignty than on demands for equity in incursion. In these negotiations, technological factors facilitated the construction of a politically acceptable regime.


2016 ◽  
Vol 31 (7) ◽  
pp. 1508-1514 ◽  
Author(s):  
C. Bruno ◽  
C. Dudkiewicz-Sibony ◽  
I. Berthaut ◽  
E. Weil ◽  
L. Brunet ◽  
...  

Hand ◽  
2017 ◽  
Vol 12 (3) ◽  
pp. NP32-NP36 ◽  
Author(s):  
Mihir J. Desai ◽  
Hari Ramalingam ◽  
David S. Ruch

Background: Heterotopic ossification (HO) is a well-known complication following the surgical treatment of fractures and dislocations about the elbow but it is not commonly discussed as a complication following arthroscopy. We present a case of a young athlete who developed HO after the arthroscopic treatment of lateral epicondylitis. Methods: This is a case report chart review of a 24 year old male with lateral epicondylitis. After failing conservative measures, arthroscopic debridement of the extensor carpi radialis brevis (ECRB) origin ensued. The treatment and patient’s final disposition were reported. Results: The patient developed heterotopic ossification of the elbow follow arthroscopic debridement of the ECRB origin. Further surgery was required to excise the heterotopic ossification. Good recovery of motion was achieved. Conclusion: To our knowledge, we present the first case of HO development after elbow arthroscopy for lateral epicondylitis. As the use of elbow arthroscopy continues to grow, there is a need for identification of the risk factors and primary prophylaxis for HO.


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