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An Emergy-Based Approach to Assess and Valuate Ecosystem Services of Tropical Wetland Pastures in Brazil

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Open Journal of Ecology 2020年第5期10卷 303-319页

作者： sandra Aparecida Santos Fabio Takahashi Evaldo Luis cardoso Claudio Flores Luiz Orcirio Fialho de Oliveira Geraldo da Silva e Souza Eliane Goncalves Gomes Enrique Ortega Embrapa Pantanal CorumbaMSBrasil Universidade de Vicosa FlorestalMGBrasil Embrapa Gado de Corte Campo GrandeMSBrasil Embrapa Sede BrasiliaDFBrasil Universidade de Campinas Barao GeraldoSPBrasil

Wetland grasslands are important ecosystems for raising beef cattle, because they are highly productive and present forages with high quality. Most of these ecosystems are threatened by overgrazing or by being replaced by exotic pastures. Emergy synthesis approach was used to assess and value the services provided by native pastures wetland under three conservation status and also to compare them to exotic pastures on wetlands. The ecosystem service that was assessed included forage provision for calves production estimated from grazing capacity of cow with calf at the foot. Habitat maintenance to plant diversity and wild herbivores were also evaluated. The results showed that natural wetland pastures with better conservation status provided valuable ecosystem services and are highly renewable. Data envelopment analysis (DEA) showed that regardless of the conservation state of the natural pastures, wet native grasslands were more efficient than wet exotic grasslands. Replacing native pastures by exotic ones may reduce plant diversity and the renewability of the system. The proposed method has a holistic approach to pasture ecosystems and is able to help decision-makers to define sustainable management practices and to subsidise public policies when it comes to payments regarding ecosystem services.

关键词： Data Envelopment Analysis Forage Resources Natural Pasture Plant Diversity Sustainability

Introduction to Foamability Study of a LDPE Subjected to Gamma Radiation

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材料科学与工程（中英文B版） 2022年第2期12卷 71-74页

作者： Elizabeth C.L.cardoso sandra R.Scagliusi Duclerc F.Parra Ademar B.Lugão Centro de Química e Meio Ambiente Instituto de Pesquisas Energéticas e Nucleares(IPEN/CNEN)São Paulo 05508-000Brazil

Nowadays,polymer foams have a wide application area due to their light weight,emphasizing resistance to impact,high thermal insulation and damping properties,among ***,automotive,packing industry,electronic,aerospace,building construction,bedding and even medical applications are some of the fields where polymer foams are *** can be classified as open and closed:Closed-cell foam is provided with tiny and discrete pockets of gas,each one totally enclosed within polymer walls;open cell foam has tiny cells which are not completely *** this work,LDPE(low density polyethylene)resin foamability was investigated after exposure to ionizing radiation(gamma),at 5,10 and 15 *** included:melt flow index,melt strength and scanning electron microscopy.

关键词： LDPE foams melt strength gamma-radiation

Association of Vitamin D Levels with the Metabolic Profile and Sexual Maturation Stage of Adolescents

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Journal of Diabetes Mellitus 2018年第4期8卷 114-124页

作者： Jesselina Francisco Dos Santos Haber Karina Quesada Renata Nunes Lopes Daniela Oliveira Silva Juliana Medeiros Silva Sabrina Antonelli cardoso Thiago Fernando Luz Cláudia Rucco Penteado Detregiachi sandra Maria Barbalho Department of Nutrition and Biochemistry School of Medicine University of Marília (UNIMAR) S&atilde o Paulo Brazil Departme of Biochemistry and Nutrition Faculty of Food Technology of Marília (FATEC) S&atilde o Paulo Brazil

The deficiency of Vitamin D (VD) is widely prevalent worldwide in adults, but many studies show that this deficiency also affects adolescents and may be considered a global public health problem. The VD levels are particularly significant in adolescents since it influences several aspects of growth, development, and puberty. During this phase of life, both girls and boys develop reproductive aspects, and secondary sexual characteristics and the adequate nutritional status appear to be the prerequisite for normal pubertal development. Due to the importance of VD in adolescents, the objective of this study was to investigate the association of the levels of this vitamin with glycemic, lipid, and anthropometric profile and sexual maturation stages of adolescents. Anthropometric (weight and height) and biochemical (fasting glycemia, total cholesterol, HDL-c, LDL-c, and triglycerides) data and VD levels were collected in 67 adolescents. 66% of the adolescents showed VD sufficiency, 28% insufficiency, and 6% showed the deficiency. There was a significant difference in VD levels between the stages of sexual maturation for boys and girls. Overweight patients had lower serum VD levels. The correlation analysis indicated a positive correlation between VD and fasting glycemia and HDL-c, but with no significant difference. A negative correlation was observed between VD and cholesterol, LDL-c and triglycerides, but also with no significant difference. Once VD is crucial for bone health, and as it seems it is necessary to the homeostasis of glycemia, lipids, and body weight, we suggest that more studies should be conducted to confirm the precise role of this vitamin in the promotion and maintenance of health in this population.

关键词： Adolescents Vitamin D Glycemia Lipids Obesity

Ursolic Acid Derivatives Induced Apoptosis and Reduces the NF-κB in Human Lung Adenocarcinoma Cells

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Journal of Cancer Therapy 2019年第10期10卷 863-876页

作者： Elaine Carlos Scherrer Ydia Mariele Valadares Caio Cesar Souza Alves Gabriella Freitas Ferreira Marcela Pereira Leao Jessica Aline Soares Fernando Sa Silva Alessandra Paula Carli Oswaldo cardoso Jr. Fabiana Simao Machado sandra Bertelli Ribeiro Castro Life Sciences Institute Federal University of Juiz de ForaGovernador ValadaresMGBrazil Faculty of Medicine Federal University of the Valleys of Jequitinhonha and MucuriTeofilo OtoniMGBrazil Department of Biochemistry and Immunology Federal University of Minas GeraisBelo HorizonteMGBrazil

Lung cancer is the major cause of death in the neoplastic diseases. In spite of the advances in the chemotherapy, the lung cancer treatments are still complex and costly, being necessary the seeking of new drugs. In this context, the ursolic acid (UA) becomes the target of studies that investigate its antitumor potential and, thus, structural modifications can enhance its biological activities. Eight UA semisynthetic derivative compounds (UAD1-8) were synthesized and evaluated their cytotoxic activity against human alveolar adenocarcinoma cells (A549). UAD1, UAD3, UAD5, UAD6 and UAD8 were able to reduce the viability of the A549 cells. Only UAD1 and UAD6 reduced the viability at 24 h, and only UAD3 didn’t reduce the NF-κB expression. The compound UAD1 showed the greater apoptosis induction. Moreover, the compound UAD1 showed better results than UA in all assays. The present study shows, for the first time, the action of these compounds in the apoptotic effect, in the expression of NF-κB and in the A549 cell line. The ursolic acid derivatives showed substantial results in the apoptosis, cytotoxicity and NF-κB inhibition of A549 cells, and further studies are necessary for the development of possible new therapeutic drugs.

关键词： Ursolic Acid Apoptosis NF-κB A549 Cells Tumoral