Influence diagnostics for skew-t censored linear regression models

Oliveira Marcos S,Oliveira Daniela CR,Lachos Victor H 한국통계학회 2023 Communications for statistical applications and me Vol.30 No.6

This paper proposes some diagnostics procedures for the skew-t linear regression model with censored response. The skew-t distribution is an attractive family of asymmetrical heavy-tailed densities that includes the normal, skew-normal and student's-t distributions as special cases. Inspired by the power and wide applicability of the EM-type algorithm, local and global influence analysis, based on the conditional expectation of the complete-data log-likelihood function are developed, following Zhu and Lee's approach. For the local influence analysis, four specific perturbation schemes are discussed. Two real data sets, from education and economics, which are right and left censoring, respectively, are analyzed in order to illustrate the usefulness of the proposed methodology.

Cannabaceae comparative analysis based on plastid genome evolution

Barbosa D’Oliveira Matielo Cristiane,Fernando Metz Geferson,Plá Matielo Lemos Rafael,de Carvalho Victoria Filipe,de Oliveira Camargo Flávio Anastácio,Marcos Stefenon Valdir 한국작물학회 2024 Journal of crop science and biotechnology Vol.27 No.1

Marijuana or hemp (Cannabis sativa L.) of the Cannabaceae family represents one of the most economically important crops within the group that comprises about 170 plant species, some of which are widely used in industry. It is the most consumed, cultivated, and trafficked illicit drug globally, having several hybrids and varieties resulting from crosses, making the distinctions between Cannabis species almost meaningless. In a former study, our research group sequenced and released two cpDNA from Cannabis apprehended by Brazilian Federal Police which we compare with all deposited Cannabaceae complete cpDNA in this work. In countries where planting, marketing, or consumption is prohibited, it is difficult for control and inspection bodies to identify the origin of different strains. Based on this problem, we aim to perform a comparative genomic analysis of the plastid DNA of the Cannabaceae family. We have found evidence that the ndhA intron seems to be an informative region for phylogenetic and evolutive studies in Cannabaceae family. With the results of the present work, we were able to establish the phylogenetic relationships for the Cannabaceae family using the plastid genomes of 35 accessions, between species, subspecies, varieties, and hybrids.

Changes in blood lactate concentrations during taekwondo combat simulation

Marcos Bürger-Mendonça,João Carlos de Oliveira,Jefferson Rosa Cardoso,Monica Bielavsky,Paulo Azevedo 한국운동재활학회 2015 JER Vol.11 No.5

Physical, chemical, mechanical, and micromorphological characterization of dental needles

de Oliveira Monteiro, Marco Antonio,Antunes, Alberto Nogueira da Gama,Basting, Roberta Tarkany The Korean Dental Society of Anesthsiology 2021 Journal of Dental Anesthesia and Pain Medicine Vol.21 No.2

Background: In anesthetic techniques, touching bones can cause needle bending. Theoretically, a needle should support such deflection without fracturing. However, it is possible that a needle may fracture depending on the quality and type of needle used. This study evaluated the physical, chemical, and micromorphological characteristics of long and short dental anesthetic needles, as well as the mechanical properties of flexural load and bending resistance when needles are subjected to different bending angles. Methods: Long and short needles (30G, Jets, Misawa, Selekto, Terumo, Unoject and 27G, Dencojet, Injex, Jets, Misawa, Procare, Setoject XL, Terumo) were evaluated. Scanning electron microscopy was used to evaluate the needle bevels and energy-dispersive X-ray spectroscopy was used for the chemical analysis of needle compositions. Flexural loading and bending strength assessments were performed using a universal testing machine by bending the needles (n = 5) to angles of 30°, 60°, or 90°, or until fracture occurred. Results: The Injex 27G, Jets 27G, and Septoject XL 27G needles were all less than 30 mm in length. There were small percentage variations in the chemical compositions of the needles. Superior smoothness was observed for the Unoject 30G needle, which exhibited the highest fracture resistance at 60°. The Jets 30G needle exhibited greater resistance to fractures at 90°. The Procare 27G needle exhibited the highest load resistance to bending, followed by the Septoject XL 27G needle, and both needles were tied for the lowest fracture resistance. No needle fractured when bent to 30° or at less than three bends to 60° or 90°. Conclusions: Greater needle resistance to bending increases the probability of early fracturing. Thinner and shorter needles are more resistant than longer and thicker needles. Performing a single bend does not result in any significant risk of fracture or obliterate the lumen, allowing for the continued passage of anesthetic liquid.

Carcass characteristics of lambs fed spineless cactus as a replacement for sugarcane

de Oliveira, Juliana Paula Felipe,Ferreira, Marcelo de Andrade,Alves, Adryanne Marjorie Souza Vitor,de Melo, Ana Caroline Cerqueira,de Andrade, Ida Barbosa,Urbano, Stela Antas,Suassuna, Juraci Marcos Asian Australasian Association of Animal Productio 2018 Animal Bioscience Vol.31 No.4

Objective: Fresh sugarcane has been a new roughage source for ruminant's in semiarid regions, a function of the decline of sugar and alcohol industry in recent years. However, there is little data published regarding lambs fed sugarcane associated with spineless cactus. This study evaluated the effect of sugarcane replacement with spineless cactus (0%, 33%, 66%, and 100%) in the diet of Santa $In\hat{e}s$ lambs on carcass characteristics. Methods: Thirty-six non-castrated Santa Ines lambs at four months of age and an initial body weight of $22{\pm}2.3kg$ were assigned in a randomized block design and slaughtered after 70 days of confinement. The effects of spineless cactus as a replacement for sugarcane in the diet of the lambs on the carcass characteristics, commercial cut weight and yield, leg tissue composition, and carcass measurements were studied. Results: The study revealed quadratic behavior in slaughter body weight, and hot and cold carcass weight, with maximum values of 38.60, 18.60, and 18.11 kg and replacement levels of 40.18%, 44.42%, and 43.14%, respectively. The cold carcass yield presented an increasing linear behavior. The compactness index of carcass and leg presented a quadratic effect, with estimated maximal values of 0.28 and 0.57 kg/cm and replacement levels of 43.37% and 45.5%, respectively. The weights of commercial cuts of leg, loin, shoulder, and breast showed quadratic behavior, with maximum values of 2.79, 0.852, 1.46, and 1.30 kg and replacement levels of 49.5, 45.32, 39.0, and 40.7, respectively. For tissue composition, quadratic behavior was verified for leg weight, subcutaneous fat, and total fat. Conclusion: The replacement of sugarcane by spineless cactus at level 44% is recommended for finishing lambs considering that this level improved most of the carcass characteristics, weights, and yields of commercial cuts and leg tissue composition.

Intraoperative fluid therapy for video-assisted ovariohysterectomy in dogs

Marília Teresa de Oliveira,João Pedro Scussel Feranti,Gabriela Pesamosca Coradini,Rafael Oliveira Chaves,Luis Felipe Dutra Corrêa,Marcella Teixeira Linhares,Roberto Thiesen,Marco Augusto Machado Silva 대한수의학회 2021 Journal of Veterinary Science Vol.22 No.3

Background: Intraoperative fluids are still poorly studied in veterinary medicine. In humans the dosage is associated with significant differences in postoperative outcomes. Objectives: The aim of this study is to verify the influence of three different fluid therapy rates in dogs undergoing video-assisted ovariohysterectomy. Methods: Twenty-four female dogs were distributed into three groups: G5, G10, and G20. Each group was given 5, 10, and 20 mL·kg−1·h−1 of Lactate Ringer, respectively. This study evaluated the following parameters: central venous pressure, arterial blood pressure, heart rate, respiratory rate, temperature, acid-base balance, and serum lactate levels. Additionally, this study evaluated the following urinary variables: urea, creatinine, protein to creatinine ratio, urine output, and urine specific gravity. The dogs were evaluated up to 26 h after the procedure. Results: All animals presented respiratory acidosis during the intraoperative period. The G5 group evidenced intraoperative oliguria (0.80 ± 0.38 mL·kg−1·h−1), differing from the G20 group (2.17 ± 0.52 mL·kg−1·h−1) (p = 0.001). Serum lactate was different between groups during extubation (p = 0.036), with higher values being recorded in the G5 group (2.19 ± 1.65 mmol/L). Animals from the G20 group presented more severe hypothermia at the end of the procedure (35.93 ± 0.61°C) (p = 0.032). Only the members of the G20 group presented mean potassium values below the reference for the species. Anion gap values were lower in the G20 group when compared to the G5 and G10 groups (p = 0.017). Conclusions: The use of lactated Ringer's solution at the rate of 10 mL·kg−1·h−1 seems to be beneficial in the elective laparoscopic procedures over the 5 or 20 mL·kg−1·h−1 rates of infusion.

A Systematic Literature Review on Lean Office

Tamie Takeda Yokoyama,Marco Aurelio de Oliveira,Andre Hideto Futami 대한산업공학회 2019 Industrial Engineeering & Management Systems Vol.18 No.1

With the increasing competition in the market, organizations have sought solutions to improve their operational performance. In this context, the application of the Lean Manufacturing principles has increased, also extending to nonmanufacturing areas, such as offices, where it received the name Lean Office (LO). The objectives of this research were to identify what are the main difficulties in LO implementations, propose a classification system and sort the collected literature. This research covered a period of study from the appearance of the first article on LO (2005), until the year before the end of this review (2016). It is methodologically characterized as systematic literature review, theoretical, exploratory, with qualitative and quantitative approach. The findings of this paper show that main difficulties encountered in the LO implementations are related to technical and cultural areas. This paper provides a better knowledge of LO literature, a LO implementations profile, and valuable support for new researches in this area.

Backgrounding steers on temperate grasses mixed with vetch and/or using energy supplementation

Eduardo Felipe Colerauz de Oliveira Lazzarotto,Luis Fernando Glasenapp de Menezes,Wagner Paris,Marcos Luis Molinete,Gean Rodrigo Schmitz,Jose Henrique Ignacio Baraviera,Roberta Farenzena,Adalberto Lui 아세아·태평양축산학회 2019 Animal Bioscience Vol.32 No.6

Objective: The aim was to evaluate backgrounding beef steers on oat + ryegrass pastures mixed with vetch and/or using energy supplementation. Methods: A randomized block design with three treatments and three replications was used. The treatments were: grass + supplement (oat + ryegrass + supplementation), legume + supplement (oat + ryegrass + vetch + supplementation) and grass + legume (oat + ryegrass + vetch). A continuous grazing system with a variable stocking rate was used. Twenty-seven intact crossbred steers (1/4 Marchigiana, 1/4 Aberdeen Angus and 2/4 Nellore) aged 7 months old and average weight of 190 kg were used. Steers were supplemented at 1% of the body weight of ground corn. The experiment lasted 84 days, between May and August 2014. Behavioral assessments were performed two times per experimental period, for 24 hours. Results: The forage mass was different between treatments, being greater for steers fed without legume. The accumulation rate, forage allowance, and stocking rate did not differ between treatments due to the adequate adjustment of forage allowance. The final weight of animals, as well as the dry matter intake (kg/d), did not differ between treatments. However, forage intake was higher for non-supplemented animals in relation to supplemented steers. Supplement intake did not alter the total digestible nutrient intake due to pasture quality. Animals fed grass + supplement had higher live weight gain per area than those fed grass + legume. Animals without supplementation spent more time in grazing. Conclusion: Feeding behavior was not altered by mixing with vetch or supplementation. Non-supplemented animals started the grazing peak earlier and spent more time in grazing than those supplemented; however, the average daily gain was similar between treatments. The live weight gain per hectare was 47% higher in pastures in which the animals received supplementation compared with those mixed with vetch, a consequence of the substitutive effect.

An introductory review on the application of principal component analysis in the data exploration of the chemical analysis of food samples

Anderson Santos Souza,Marcos Almeida Bezerra,Uillian Mozart Ferreira Mata Cerqueira,Caiene Jesus Oliveira Rodrigues,Bianca Cotrim Santos,Cleber Galvão Novaes,Erica Raina Venâncio Almeida 한국식품과학회 2024 Food Science and Biotechnology Vol.33 No.6

Principal component analysis (PCA) is currently one of the most used multivariate data analysis techniques for evaluating information from food analysis. In this review, a brief introduction to the theoretical principles that underlie PCA will be given, in addition to presenting the most commonly used computer programs. An example from the literature was discussed to illustrate the use of this chemometric tool and interpretation of graphs and parameters obtained. A list of recently published articles will also be presented, in order to show the applicability and potential of the technique in the food analysis field.

Impact of Artistic Gymnastics on Bone Formation Marker, Density and Geometry in Female Adolescents: ABCD-Growth Study

Isabella Neto Exupério,Ricardo Ribeiro Agostinete,André Oliveira Werneck,Santiago Maillane-Vanegas,Rafael Luiz-de-Marco,Eduardo D.L. Mesquita,Han C.G. Kemper,Rômulo Araújo Fernandes 대한골대사학회 2019 대한골대사학회지 Vol.26 No.2

Background: To compare bone density accrual and markers of bone geometry and formation between female adolescents engaged and not engaged in artistic gymnastics (AGs). Methods: This was a 12-month longitudinal study involving 20 female adolescents, including 10 controls and 10 gymnasts (AGs) aged 11 to 16 years. At baseline, the gymnasts had a minimum of 12 months of practice, and the controls reported no participation in any organized sport. Bone mineral density (BMD) was measured in the lower limbs, upper limbs, spine, and whole body. In addition, BMD and geometrical properties of the femur were assessed. As a bone formation marker, osteocalcin level was measured. Results: Femoral aspects were increased in the gymnasts by 19% (P=0.009), 14% (P=0.047), and 10% (P=0.046) in the Ward’s triangle, trochanter, and the overall bone, respectively, than in the control girls. Geometrical parameters, bone accrual, and osteocalcin levels were similar in both groups. The weekly training load explained 30.8% of all bone gains on the lower limbs and affected the density on parts of the femur. Conclusions: The gymnasts, after a 12-month follow-up, demonstrated a higher BMD in the Ward’s triangle and whole femur than the controls, as well as an improvement in femur density. These changes were mainly due to the weekly training load. Lastly, the gymnasts had significant bone accrual (after 12 months) in the upper limbs, lower limbs, and whole body.