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Open Journal of Animal Sciences 2013年第4期3卷 1-7页

作者： Emilio pimentel luz M. Vidal Martha patricia Cruces Mariusz Krzysztof Janczur Departamento de Biología Instituto Nacional de Investigaciones Nucleares (ININ) Ocoyoacac México Facultad de Ciencias Universidad Autónoma del Estado de México Toluca México

protoporphyirin-IX (pp-IX) is a precursor of the biosynthesis of the hemo group, most of the cytochromes and the chlorophylls. The pp-IX is used for medical purposes, and recently a report indicated that it exhibits a dual action since it can decrease or increase the genetic damage caused by N-nitroso-N-ethylurea (ENU) in somatic cells of Drosophila. pp-IX is known to be able to act as an anti-or pro-oxidant agent. The aim of the present research was to study the role of pp-IX on the lifespan of Drosophila melanogaster, taking into account the fact that increasing levels of ROS can accelerate the aging process. The Canton-S strain (CS) was used as well as Sod and Cat which are deficient in the endogenous enzymes, superoxide dismutase and catalase, respectively. Groups of females and males were treated separately with 5 mg/ml of pp-IX solution. The comparison of survival curves indicates that this pigment extended the lifespan of CS. In contrast, Sod strain showed that the opposite effect and had no effect in Cat strain. The fact that pp-IX reduces the mean lifespan in Sod deficient strain might suggest a pro-oxidant action of pp-IX, and consequently the cumulating of ROS as a superoxide could have a mutagenic effect as was shown recently. The results presented evidence of the dual effect of pp-IX.

关键词： protoporphyrin IX (pp-IX) Lifespan Sod Cat Reactive Oxygen Species Longevity Drosophila melanogaster

Microencapsulation of Banana passion Fruit (<i>passiflora tripartita Var. Mollissima</i>): A New Alternative as a Natural Additive as Antioxidant

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Food and Nutrition Sciences 2014年第8期5卷 671-682页

作者： Maritza Gil Ana Restrepo Leonidas Millán luz Alzate Benjamín Rojano Chemestry Ecole National University of Colombia Medellin Colombia Engineering Faculty Lasalian University Corporation Caldas Colombia

Banana passion fruit (p. tripartita var. Mollissima) is one of the most promising tropical fruits giving its antioxidant activity (AOA) to replace synthetic additives. Despite this property, there are no studies about the metabolites responsible for its biological function or proposals for the application of technologies, such as microencapsulation by spray drying, to improve its properties and ease its incorporation in several food matrices. The aim of this study is to microencapsulate the pulp of banana passion fruit with several mixtures of encapsulants and identify which one of these mixtures is better to preserve its AOA. The antioxidant activity values for the banana passion fruit pulp were as follows: DppH: 6630.2 ± 91 μMtrolox/100g;ABTS: 18764.3 ± 270.4 μMtrolox/100g;FRAp: 1703.6± 938.2 mgAA/100g, ORAC: 8105.4 ± 424.2 μmol TEAC/100g of sample;Total phenols: 8862.2 ± 451.4 gallic ac. mg/100g. The concentrations of the bioactive compounds expressed in mg of gallic acid per 100 g of the pulp on a dry base were 13.9 ± 0.004;5.9 ± 0.001 and 126.3 ± 0.004 for caffeic, p-coumaric and ferulic acids, respectively. The best shelf-life followed by ABTS in eight assays was between 28.8 and 31.5 weeks using maltodextrin and modified starch, MD:MS (1/4:3/4) and MD:MS (0:1), respectively. In conclusion, ABTS is the best method to measure the AOA in banana passion fruit because it correlated with the phenolic compounds better than DppH and FRAp methods. Additionally, two options were found to protect the AOA and to extent the shelf-life of the passion fruit by spray-drying, with mixtures of encapsulants widely used in the food industry.

关键词： passiflora tripartite ABTS Maltodextrin Microencapsulation phenolic Compound

Distinct physiological mechanisms underpin growth and rehydration of Hymenaea courbaril and Hymenaea stigonocarpa upon short-term exposure to drought stress

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Journal of Forestry Research 2023年第1期34卷 113-123页

作者： Luana M.luz Ediane C.Alves Nariane Q.Vilhena Tamires B.Oliveira Zara G.B.Silva Joze M.N.Freitas Candido F.O.Neto Roberto C.L.Costa Lucas C.Costa Universidade Federal Rural da AmazOia CapanemaPA 68700-665Brazil Universidade Federal Rural da AmazEia BelémPA 66077-830Brazil

plants hold biochemical and physiological mechanisms to withstand drought ***,depending on water deficit interval,plant rehydration relies on how it can retain growth or a positive water balance—or rarely *** this study,two species of Hymenaea,one from the Amazon and the other from the Brazilian Cerrado,were investigated for their physiological mechanism associated with growth rehydration upon short-term exposure to drought *** findings demonstrate that Hymenaea courbaril tends to invest in nitrogen to the detriment of carbon compounds,-as it is limited by lower net photosynthesis-and adjust root growth to attenuate drought stress *** contrast,Hymenaea stigonocarpa takes advantage of higher water potential and a basal rate of lower net photosynthesis to support aboveground growth under such ***,it is postulated that there are distinct ways of controlling water status and growth between *** and ***,which are determined either by the ability of the species to keep net photosynthesis at low levels of water content or by favoring the accumulation of nitrogen *** mechanisms were effective with regards to water use efficiency and thus it is reasonable to suggest that strategies are not exclusive and may work under adverse conditions,as observed in Amazon and Brazilian Cerrado ***.

关键词： Hymenaea courbaril Hymenaea stigonocarpa Growth photosynthesis Water deficit

A Clinical Study on Diabetes, Cholesteremia and Hyperlipemia

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中国针灸 1995年第S2期15卷 388-389页

作者： luz Maria Ros(Centre Integral de SaludMedicina Traditional ChinaSagitario 198Fracc.Con fry, Cp 64860Monterrey, Nuevo Leon, Mexico)

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ＡＣｌｉｎｉｃａｌＳｔｕｄｙｏｎＤｉａｂｅｔｅｓ，ＣｈｏｌｅｓｔｅｒｅｍｉａａｎｄＨｙｐｅｒｌｉｐｅｍｉａ￥ＬｕｚＭａｒｉａＲｏｓ（ＣｅｎｔｒｅＩｎｔｅｇｒａｌｄｅＳａｌｕｄＭｅｄｉｃｉｎａＴｒａｄｉｔｉｏｎａｌＣｈｉｎａＳａｇｉｔａｒｉｏ１９８Ｆｒ...

关键词： A Clinical Study on Diabetes Cholesteremia and Hyperlipemia

Recovery of Iron Ore Tailings by Column Flotation

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Journal of Minerals and Materials Characterization and Engineering 2013年第5期1卷 212-216页

作者： plinio Eduardo praes Rodrigo Oscar de Albuquerque Antonio Furquim Oliveira luz Centro de Desenvolvimento da Tecnologia Nuclear(CDTN) Comissao Nacional de Energia NuclearBelo HorizonteBrazil

The exploration of iron ore in small mining companies results in a large amount of unrecovered fine material, representing 35% of the run of mine. Millions of tons of useful minerals are discarded every year into tailings, incurring operation costs, raising production losses and environmental impact. In addition to the disposal of 300 t/h of this material, millions of tons are already stored in tailings. CDTN carried out a study of the process in a column flotation pilot plant installed in the mining facilities with a slime sample, with a view to recovering this sludge using the reverse flotation technique. The aim of this experiment was to obtain a final concentrate whose Fe content assigned 66% with a SiO2 content below 0.8% and p lower than 0.03%. The results showed that the ultrafine flotation is an economical alternative if the improvement of the recovery in the mineral sector is concerned. Ultrafine flotation can also be assessed when dealing with reduction and treatment of effluent discharged in the environment.

关键词： Flotation Iron Ore Slimes

Economically Challenged Women in Disaster Risk Management: Toward a Resilient Filipino Community

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Open Journal of Ecology 2018年第1期8卷 42-56页

作者： Teodora luz S. Mangahas Rosemarie R. Casimiro Arneil G. Gabriel Department of Environmental Science College of Arts and Sciences Nueva Ecija University of Science and Technology Cabanatuan Philippines City Disaster Risk Reduction and Management Office Local Government of Cabanatuan Cabanatuan Philippines Department of public Administration Nueva Ecija University of Science and Technology Cabanatuan Philippines

The social and cultural norms shape gender roles which sometimes deprive women of the opportunity to prepare for natural calamities. But the disastrous effect of natural disasters spares no one. It knows no gender. Most of the time, women more than men bear the worse of consequences. The study measures and describes the impact of disaster preparedness sessions on the perception of economically challenged women in philippines. By using a mixed qualitative and quantitative research method the study found that: 1) the majority of women participants are willing to undergo training in disaster preparedness;2) their awareness in disaster preparedness improved from “basic” to “high” level;3) their level of action in disaster preparedness is still on the “planning stage” and;4) the program effectively changed their attitude towards disaster preparedness and mitigation. The study provided insights on the potential of women in disaster preparedness toward a disaster resilient Filipino community.

关键词： Sustainable Development Gender Awareness Natural Calamities Economically Deprived Women Disaster Awareness

Calculation of Infinite Series Through polygamma Functions＇ Algorithms and Laplace Transforms

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Journal of Mathematics and System Science 2013年第2期3卷 110-113页

作者： Héctor Luna-Garcia luz Maria Garcia Cruz R. Mares Area de Fisica Atómica Molecular Aplicada CBI UAM-A Azcapotzalco México 02200 México Departamento de Fisica ESFM IPN Edificio 9. U.P. Zacatenco México 07738 México

Here is introduced some novel algorithms which made use of polygarnma functions to get the exact limits of a broad class of infinite series. Moreover, Laplace transform is used to find the sum of many convergent infinite series. These exact limits are found in different branches of physics for some special cases series and are in complete agreement with the values found by other authors. Moreover, the methods presented here are generalized and applied to other wide variety of sums, including alternating series. Finally, these methods are simple and quite powerful to calculate the limits of many convergent series as you can see from the examples included.

关键词： polygamma function Laplace transform infinite series.

Sustainability of E-Trike as Alternative Mode of public Transportation System: The Case of Cabanatuan City, philippines

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Open Journal of Civil Engineering 2017年第3期7卷 362-377页

作者： Felipe E. Balaria Marilou p. pascual Mercedes D. Santos Arjay F. Ortiz Arneil G. Gabriel Teodora luz Soto Mangahas Nueva Ecija University of Science & Technology Cabanatuan City Philippines

The City of Cabanatuan is dubbed as the “Tricycle Capital of the philippines”. Tricycle is a three wheeled vehicle used to transport people. Cabanatuan has about 30,000 registered gas-fed four-stroke motorized tricycles. Tricycle operation in this City has become the source of livelihood for around 10,000 families. Its number has tremendously increased despite growing competition and declining net daily income and the adverse effects it brings to the environment. The study analyzed the different aspects in the adoption of E-trikes (electric tricycles) as a mode of public transport system replacing motorized tricycles in the city. The conceptual framework of sustainable development was used to analyze the data. Basic accounting method in determining return on investment and payback period were used to compare the cost and return from among the current mode of transportation as against the adoption of E-trike. Data gathering employed the interviews, survey questionnaires and focus group discussion. The three areas of sustainability measured in the study were economic, socio-political and environmental. The study showed that from among 412 tricycle driver-operators randomly selected, majority were amenable to the shift from engine propelled tricycle to E-trike. However, cost of E-trike deters adoption and full implementation by the City Government. political issue is also?the?utmost consideration since work displacement is imminent among the stakeholders once adoption of this mode takes place. On the other side, E-trike was found to be sustainable in the long run both on the point of view of operators and the riding public. The paper recommended that policy regulation be laid down, adopted, and implemented by the local government unit in response to the philippines Cleaner Air Act.

关键词： Motorized Tricycle Electric Tricycle Environmental Hazard Adoption of Available & Better Technologies Sustainability Commercial Viability

Abatement of Helminth Eggs and Bacterial and Viral Indicators in Soil after Land Application of Treated Sludges

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Journal of Water Resource and protection 2013年第12期5卷 1155-1164页

作者： Claudia Campos Milena Beltrán Marcela Duarte luz Medina Francisco Lucena Juan Jofre 1Department of Microbiology University of Barcelona Barcelona Spain 2The Water Research Institute University of Barcelona Barcelona Spain Department of Microbiology Pontificia Universidad Javeriana Bogotá Colombia

The reduction of helminth eggs, fecal coliforms and somatic coliphages present in sewage sludge after treatments and abatement by application to soil was determined. Traditional stabilization processes produced small changes in the concentrations of the parameters studied. In contrast, thermal treatments and liming produced dramatic reductions. Fecal coliforms were the most affected by both types of treatments;somatic coliphages showed some persistence after 30 minutes at 60°C;and both somatic coliphages and helminth eggs showed some persistence to storage in quick lime. However, both treatments supplied biosolid suitable for unrestricted application in agriculture. Abatement in soils in the climatic conditions tested (mild to cold temperatures and high relative humidity) was slow and took several months to reach the background levels. These results suggest that environmental conditions (temperature and humidity) play the main role in inactivating the microorganisms, since abatement was similar in different soil types. The extended permanence of pathogens and microbial indicators in soil after the application of treated sludges indicates that, in the normal weather conditions of the areas where the study was performed and the amounts of sludges applied, contaminant microbes are not easily mobilized from the complex matrixes that constitute the treated sludges and that consequently in normal conditions their release as diffuse pollution is of lesser importance.

关键词： Fecal Indicators Land Application Sludge Soil Treatment