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Modified harmony search and its application to cost minimization of RC columns
Medeiros, Guilherme F.,Kripka, Moacir Techno-Press 2017 Advances in computational design Vol.2 No.1
This paper presents a variant of the Harmony Search Algorithm (HS) and its application to discrete optimization. The main proposed modifications regarding original HS are related to stopping criterion and reinitialization of population, called Harmony Memory. In order to investigate the efficiency of the algorithm, it was applied for obtaining optimal sections of reinforced concrete columns subjected to uniaxial flexural compression. To minimize the cost of the section, the amount and diameters of the reinforcement bars and the dimensions of the columns cross sections were considered as design variables. The obtained results were compared to those generated by other optimization methods. Since, to the examples, Harmony Search reached the same results achieved by Simulated Annealing, some additional analysis are presented in order to compare these methods regarding success rate and number of iterations to reach the optimum.
Energy Requirements for Maintenance and Growth of Male Saanen Goat Kids
Medeiros, A.N.,Resende, K.T.,Teixeira, I.A.M.A.,Araujo, M.J.,Yanez, E.A.,Ferreira, A.C.D. Asian Australasian Association of Animal Productio 2014 Animal Bioscience Vol.27 No.9
The aim of study was to determine the energy requirements for maintenance and growth of forty-one Saanen, intact male kids with initial body weight (BW) of $5.12{\pm}0.19$ kg. The baseline (BL) group consisted of eight kids averaging $5.46{\pm}0.18$ kg BW. An intermediate group consisted of six kids, fed for ad libitum intake, that were slaughtered when they reached an average BW of $12.9{\pm}0.29$ kg. The remaining kids (n = 27) were randomly allocated into nine slaughter groups (blocks) of three animals distributed among three amounts of dry matter intake (DMI; ad libitum and restricted to 70% or 40% of ad libitum intake). Animals in a group were slaughtered when the ad libitum-treatment kid in the group reached 20 kg BW. In a digestibility trial, 21 kids (same animals of the comparative slaughter) were housed in metabolic cages and used in a completely randomized design to evaluate the energetic value of the diet at different feed intake levels. The net energy for maintenance ($NE_m$) was $417kJ/kg^{0.75}$ of empty BW (EBW)/d, while the metabolizable energy for maintenance ($ME_m$) was $657kJ/kg^{0.75}$ of EBW/d. The efficiency of ME use for NE maintenance ($k_m$) was 0.64. Body fat content varied from 59.91 to 92.02 g/kg of EBW while body energy content varied from 6.37 to 7.76 MJ/kg of EBW, respectively, for 5 and 20 kg of EBW. The net energy for growth ($NE_g$) ranged from 7.4 to 9.0 MJ/kg of empty weight gain by day at 5 and 20 kg BW, respectively. This study indicated that the energy requirements in goats were lower than previously published requirements for growing dairy goats.
Correction to: Effect of biosolid hydrochar on toxicity to earthworms and brine shrimp
Melo, Tatiane Medeiros,Bottlinger, Michael,Schulz, Elke,Leandro, Wilson Mozena,de Aguiar Filho, Adelmo Menezes,Ok, Yong Sik,Rinklebe, Jö,rg Springer-Verlag 2018 Environmental geochemistry and health Vol.40 No.1
Plant and soil responses to hydrothermally converted sewage sludge (sewchar)
Melo, Tatiane Medeiros,Bottlinger, Michael,Schulz, Elke,Leandro, Wilson Mozena,Menezes de Aguiar Filho, Adelmo,Wang, Hailong,Ok, Yong Sik,Rinklebe, Jö,rg Elsevier 2018 CHEMOSPHERE - Vol.206 No.-
<P><B>Abstract</B></P> <P>This study compared the effects of sewchar and mineral fertilizer on plant responses in beans (<I>Phaseolus vulgaris</I>, var. “Jalo precoce”) and soil properties in a pot experiment in a completely randomized design with two harvests. The initial treatments consisted of a control, sewchar doses of 4, 8, 16 and 32 Mg ha<SUP>−1</SUP> and mineral fertilizer (30 mg N, 90 mg P<SUB>2</SUB>O<SUB>5</SUB> and 60 mg K<SUB>2</SUB>O kg<SUP>−1</SUP>). The treatments (4 replications each) were fertilized with 135 mg P<SUB>2</SUB>O<SUB>5</SUB> kg<SUP>−1</SUP> at the second harvest. The sewchar application rates correlated positively with the CEC, the water holding capacity, the availability of Zn, Ca, Fe, Cu, and P, and the concentrations of nitrate, ammonium, total N, total organic carbon and hot water extractable carbon. They correlated negatively with the Mg availability and the soil C: N ratio. Additionally, they correlated positively with the P, Zn and Ca uptake from the soil. For both harvests, the 16 Mg ha<SUP>−1</SUP> sewchar treatment had a total dry matter equivalent to that of the mineral fertilizer. After the second harvest, the 16 Mg ha<SUP>−1</SUP> sewchar treatment revealed 96% higher plant biomass than the control and 79% higher biomass than it did during the first period. The positive effect of sewchar in addition to phosphorous on the plant response and soil properties suggests that the residual effect of sewchar could be a promising alternative as a soil amendment for partly replacing mineral fertilizers. In future, further studies are necessary to evaluate long-term residual effects of sewchar in soil.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Mineral fertilizer had higher total dry matter in the first harvest. </LI> <LI> The 16 Mg ha<SUP>−1</SUP> sewchar dose had total dry matter equivalent to mineral fertilizer. </LI> <LI> Increasing sewchar doses correlated positively with P, Zn and Ca plant uptake. </LI> <LI> Sewchar doses had higher total dry matter average in the second harvest. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Carbonation depth in 57 years old concrete structures
Ronaldo A. Medeiros-Junior,Maryangela G. Lima,Ricardo Yazigi,Marcelo H.F. Medeiros 국제구조공학회 2015 Steel and Composite Structures, An International J Vol.19 No.4
Carbonation depth was verified in 40 points of two 57 years old concrete viaducts. Field testing (phenolphthalein spraying) was performed on the structures. Data obtained were statistically analyzed by the Kolmogrov-Smirnov's test, one-way analysis of variance (ANOVA's test), and Fisher's method. The results revealed significant differences between maximum carbonation depths of different elements of the same concrete structure. Significant differences were also found in the carbonation of different concrete structures inserted in the same macroclimate. Microclimatic factors such as temperature and local humidity, sunshine, wind, wetting and drying cycles, among others, may have been responsible by the behavior of carbonation in concrete.
Turnera subulata Anti-Inflammatory Properties in Lipopolysaccharide-Stimulated RAW 264.7 Macrophages
Natalia Cabral Souza,Juliana Medeiros de Oliveira,Maurilio da Silva Morrone,Ricardo D’Oliveira Albanus,Maria do Socorro Medeiros Amarante,Christina da Silva Camillo,Silvana Maria Zucolotto Langassner 한국식품영양과학회 2016 Journal of medicinal food Vol.19 No.10
In South America, particularly in the Northeastern regions of Brazil, Turnera subulata leaf extract is used as an alternative traditional medicine approach for several types of chronic diseases, such as diabetes, hypertension, chronic pain, and general inflammation. Despite its widespread use, little is known about the medicinal properties of the plants of this genus. In this study, we evaluate the antioxidant and anti-inflammatory of T. subulata leaf extract in an in vitro model of inflammation, using lipopolysaccharide-stimulated RAW-264.7 macrophage cell line. We observed that cotreatment with T. subulata leaf extract was able to reduce the oxidative stress in cells due to inflammatory response. More importantly, we observed that the leaf extract was able to directly modulate inflammatory response by altering activity of members of the mitogen-activated protein kinase pathways. Our results demonstrate for the first time that T. subulata have antioxidant and anti-inflammatory properties, which warrant further investigation of the medicinal potential of this species.
Guilherme Fleith de Medeiros,Moacir Kripka 사단법인 한국계산역학회 2013 Computers and Concrete, An International Journal Vol.11 No.3
The aim of the present paper is to show the application of optimization strategies for the cost of beams in reinforced concrete buildings and to propose pre-sizing parameters. In order for these goals to be met, an optimization software program was developed. The program combines the analysis of structures by the grid model, reinforced concrete sizing, and the simulated annealing optimization heuristic. Sizing is compliant with the NBR 6118 (2007) Brazilian standard, according to which flexural, shearing, torsion, and web reinforcements and serviceability limit states (deflection and crack width limitation) are checked. Besides the dimensions of the situations mentioned above, the influence the cost of each material (steel, concrete and formwork) has on the overall cost of structures was also determined.
Ana Larisse Carneiro Pereira,Vitória Ramos Medeiros,Maria de Fátima Trindade Pinto Campos,Annie Karoline Bezerra de Medeiros,Burak Yilmaz,Adriana da Fonte Porto Carreiro 대한치과보철학회 2022 The Journal of Advanced Prosthodontics Vol.14 No.4
PURPOSE. To evaluate and compare the effect of impression type (conventional vs digital) and the number of implants on the time from the impressions to the generation of working casts of mandibular implant-supported fixed completearch frameworks, as well as on patient satisfaction. MATERIALS AND METHODS. 17 participants, 3 or 4 implants, received 2 types of digital impression methods (DI) and conventional (CI). In DI, two techniques were performed: scanning with the scan bodies (SC) and scanning with a device attached to the scan bodies (SD) (BR 10 2019 026265 6). In CI, the making of a solid index (SI) and open-tray impression (OT) were used. The outcomes were used to evaluate the time and the participant satisfaction with conventional and digital impressions. The time was evaluated through the timing of the time obtained in the workflow in the conventional and digital impression. The effect of the number of implants on time was also assessed. Satisfaction was assessed through a questionnaire based on seven. The Wilcoxon test used to identify the statistical difference between the groups in terms of time. The Mann-Whitney test was used to analyze the relationship between the time and the number of implants. Fisher's test was used to assess the patient satisfaction (P <.05). RESULTS. The time with DI was shorter than with CI (DI, x~=02:58; CI, x~=31:48) (P <.0001). The arches rehabilitated with 3 implants required shorter digital impression time (3: x~=05:36; 4: x~=09:16) (P <.0001). Regarding satisfaction, the DI was more comfortable and pain-free than the CI (P <.005). CONCLUSION. Digital impressions required shorter chair time and had higher patient acceptance than conventional impressions.
‘위안화 스와프 라인’과 긴급자금 대여국으로서 중국의 새로운 역할
로드리고 루이즈 메데이로스 다 실바(Rodrigo Luiz Medeiros da Silva),이윤수(번역자) 서울대학교 아시아연구소 2016 아시아리뷰 Vol.6 No.1
이 글은 두 부분으로 구성되어 있다. 첫째, 중국의 국내 통화인 위안화의 국제화에서 현 상태를 평가한다. 자국 통화의 국제적 지위를 획득하려는 중국의 목표 이면에 있는 동기에 대해서 논의할 것이다. 또한, 위안화의 국제화를 위한 공식적인 계획들을 살펴본다. 공식적인 계획들 중에서 이 글은 위안화 스와프를 구축한 것에 주목한다. 이것은 중국의 중앙은행과 몇몇 다른 나라의 중앙은행들이 서로에게서 통화를 매수하고 재매수하는 것을 허용하는 공식적인 크레디트 라인(credit line)이다. 둘째, 중국-아르헨티나 ‘스와프 라인’에 대한 사례 연구다. 한때 자국 화폐의 평가절하가 임박한 상황에서 국내 외환시장을 안정시키기 위해 상당히 많이 유입한 위안화의 덕을 봤던 한 나라의 상황에 대한 특징을 살펴보고자 한다. 이 글은 아르헨티나가 외환 위기를 모면한 것은 긴급자금 대여국로서 중국의 새로운 역할이 없었다면 불가능했을 것이라는 가설을 옹호한다. This paper has two parts: The first evaluates the current internationalization of China’s domestic currency, the yuan-reminbi. We shall discuss the motivations behind China’s aim to achieve a global status for its currency. We shall also review the official state initiatives to internationalize it. Among those, we emphasize the establishment of yuan-reminbi “swaps,” official credit lines that allow central banks from China and several other countries to purchase and repurchase currencies from one another. The second part is a case study of the Sino-Argentine “swap line.” We will try to characterize the situation of a country that, once facing an imminent devaluation of its national currency, benefited from significant yuan-reminbi inflows in order to stabilize its foreign currency markets. We shall defend the hypothesis that Argentina’s solution to the currency exchange crisis would have been unfeasible without Chin’a new role as an emergency lender.