Biological and morphological aspects of Plectris aliena (Coleoptera: Melolonthidae) in sugarcane in Brazil

Plectris aliena (Coleoptera, Melolonthidae) Chapin is a species already recorded causing serious damage to various cultures in North America and Australia. Although its occurrence has recently been reported in Brazil, information about its distribution, taxonomy, and biology is limited. Thus, this study aims to report this new occurrence of P. aliena in Deodápolis (Mato Grosso do Sul, Brazil), as well as to present bioecological and morphological aspects of this species. In this way, the seasonal distribution and the life cycle was studied in the years 2017 and 2018. The larvae were sampled through trenches made in the soil and reared in the laboratory. Adults were captured using “Luiz de Queiroz” light traps. Adults have body with dense white hairs, antennae with 10 antenomeres; they measure approximately 12 mm in length, and their antennal lamellae are larger for males than females. The larvae reach 30 mm in length in the third stage and pupae show about 19 mm in length. The life cycle of this species is univoltine. Due to the great diversity of Plectris and the scarce information available about this species in South America, this study will facilitate its identification in the field and indicate the best time for monitoring in sugarcane crop

Biological and morphological aspects of Plectris aliena (Coleoptera: Melolonthidae) in sugarcane in Brazil

Plectris aliena (Coleoptera, Melolonthidae) Chapin is a species already recorded causing serious damage to various cultures in North America and Australia. Although its occurrence has recently been reported in Brazil, information about its distribution, taxonomy, and biology is limited. Thus, this study aims to report this new occurrence of P. aliena in Deodápolis (Mato Grosso do Sul, Brazil), as well as to present bioecological and morphological aspects of this species. In this way, the seasonal distribution and the life cycle was studied in the years 2017 and 2018. The larvae were sampled through trenches made in the soil and reared in the laboratory. Adults were captured using “Luiz de Queiroz” light traps. Adults have body with dense white hairs, antennae with 10 antenomeres; they measure approximately 12 mm in length, and their antennal lamellae are larger for males than females. The larvae reach 30 mm in length in the third stage and pupae show about 19 mm in length. The life cycle of this species is univoltine. Due to the great diversity of Plectris and the scarce information available about this species in South America, this study will facilitate its identification in the field and indicate the best time for monitoring in sugarcane crop

Morphology of immature stages and mating behavior in Liogenys fusca (Blanchard) (Coleoptera, Melolonthidae, Melolonthinae)

AbstractLiogenys fusca is a rizophagous insect pest in various crops of economic importance in Brazil. Here we investigated the morphology of immature stages and mating behavior of this species. The redescription of the 3rd instar larvae of L. fusca in this work allows identification and registration of occurrence independently of adults, which occur sporadically in a certain period of the year. Male and female of L. fusca remained confined in the soil during the day and exited between 19:00 and 23:30h. The copulations occurred between 19:30 and 21:00h, and were characterized by a typical behavioral sequence. Copulation durations in L. fusca lasted on average 512.23s. Adults were observed feeding before the copulations on leaves and inflorescences of plant species belonging to the family Anacardiaceae, Myracrodruon urundeuva, Schinus terebinthifolius, Astronium fraxinifolium and Anacardium occidentale

Effect of a bonding resin layer associated with a self-etching adhesive system on the bond strength of indirect restorations

The aim of this study was to evaluate the influence of a low-viscosity bonding resin applied over a self-etching adhesive system on the microtensile bond strength (µTBS) of indirect restorations. Comparisons were made using One Up Bond F (OB) self-etching adhesive system, Single Bond (SB) one-bottle adhesive system and Scotchbond Multi Purpose Plus (SMP) bonding component. Thirty bovine incisors were extracted and decoronated at the cementoenamel junction. The labial surfaces were ground so that superficial dentin and deep dentin were exposed. The specimens were randomized to three groups (n=10): G1- OB; G2- OB + SMP; G3- SB. In G2, a layer of the SMP bonding was applied over the OB adhesive system. Indirect composite restorations were bonded using dual-cure cement under 500 g load for 5 min. The specimens were serially sectioned with a bonding area of ± 1.0 mm² in 3 regions: enamel (E), superficial dentin (SD) and deep dentin (DD). The sticks were fixed with cyanoacrylate adhesive and submitted to µTBS test at a crosshead speed of 0.5 mm/min in a mechanical testing machine (EMIC DL 2000). The fractured specimens were examined under scanning electron microscopy to determine the failure mode. Data were analyzed by one-way ANOVA followed by Tukey's test (

Effect of fluoride application during radiotherapy on enamel demineralization

Radiation-related caries are one the most undesired reactions manifested during or after head and neck radiotherapy. Fluoride application is an important strategy to reduce demineralization and enhance remineralizaton. Objective: To evaluate the effect of the topical application of fluoride during irradiation on dental enamel demineralization. Material and Methods: Thirty molars were randomly divided into three groups: Non-irradiated (NI), Irradiated (I), Irradiated with fluoride (IF). Each group was subdivided according to the presence or absence of pH-cycling (n=5). In the irradiated groups, the teeth received 70 Gy. The enamel’s chemical composition was measured using Fourier Transform Infrared Spectrometry (organic matrix/mineral ratio – M/M and relative carbonate content - RCC). Vickers microhardness (VHN) and elastic modulus (E) were evaluated at three depths (surface, middle and deep enamel). Scanning electron microscopy (SEM) was used to assess the enamel’s morphology. Results: The FTIR analysis (M/M and RCC) showed significant differences for irradiation, pH-cycling and the interaction between factors (p<0.001). Without pH-cycling, IF had the lowest organic matrix/mineral ratio and relative carbonate content. With pH-cycling, the organic matrix/mineral ratio increased and the relative carbonate content decreased, except for IF. VHN was influenced only by pH-cycling (p<0.001), which generated higher VHN values. ANOVA detected significant differences in E for irradiation (p<0.001), pH-cycling (p<0.001) and for the interaction between irradiation and pH-cycling (p<0.001). Increased E was found for group I without pH-cycling. With pH-cycling, groups I and IF were similar, and showed higher values than NI. The SEM images showed no morphological changes without pH-cycling. With pH-cycling, fluoride helped to maintain the outer enamel’s morphology. Conclusions: Fluoride reduced mineral loss and maintained the outer morphology of irradiated and cycled enamel. However, it was not as effective in preserving the mechanical properties of enamel. Radiotherapy altered the enamel’s elastic modulus and its chemical composition

Organização e representação da informação no cenário brasileiro.

It analyzes the impact of the organization and representation of information in Brazilian scientific journals, from 2009 to 2013, classified in strata indicative of quality A1 and A2 in the Qualis system. The object of research involves theoretical aspects concerned with epistemological aspects with product development, or even to the methods and tools that support the documentary representation in its broadest aspects. We intend to analyze the results of research on the organization and representation of information, published in national periodicals, stratum Qualis A1 and A2, from 2009 to 2013. The research presents Qualiquantitative approach, in which resort to literature, to the constitution of the theoretical framework, and documentary research, to collect data. We opted for the form as a data collection instrument. The analysis is done descriptively, exploratory and comparative. As a result articles 592 were identified, and 517 in A1 and 75 A2 publications publications. In this universe of research, from the analysis summary and key words, they identified 87 articles involving thematic group on organization and representation of information. This result points to the fact that the subject has influenced research in the Brazilian context and that relates to recovery activities of information and improvement of products and services to service users. Among the most recurrent issues are ontology, information retrieval, organization of system knowledge, knowledge organization, information organization, knowledge representation, metadata, taxonomy, thesaurus and FRBR. The advancement of information technology is considered as a determining factor in the need for research and publications in the area

Major clinical findings of ortho-surgical procedures in Class II patients: a concise systematic review

Introduction: In the ortho-surgery treatment, the AOB is an easily recognized malocclusion and presents only aesthetic and functional problems. Its etiology is multifactorial, including heredity, oral habits, unfavorable growth patterns, and increased lymphatic tissue along with mouth breathing and functional oral matrices. The prevalence of anterior open bite in the early mixed dentition is approximately 17.0-25%. Objective: the present study aimed to list the major clinical findings of ortho-surgical procedures in class II patients, as well as to analyze the risks of bias between the selected clinical studies. Methods: The present study was followed by a systematic literature review model, according to the PRISMA rules. The search strategy was performed in the PubMed, Cochrane Library, Web of Science and Scopus, and Google Scholar databases. The present study was carried out from February to June of 2022. The quality of the studies was based on the GRADE instrument, with randomized controlled clinical studies, prospective controlled clinical studies, and studies of systematic review and meta-analysis listed as the studies with the greatest scientific evidence, and the Risk of Bias was analyzed according to the Cochrane instrument (Funnel Plot Analysis). Results and Conclusion: A total of 111 articles were found. After this process, the abstracts were evaluated and a new exclusion was performed based on the GRADE Instrument and Risk of Bias. A total of 57 articles were fully evaluated and 13 clinical studies were included and discussed in this systematic review study. Considering the Cochrane tool for risk of bias, the overall assessment resulted in 27 studies that were excluded with a Major Risk of Bias (studies with small sample size), and 44 studies that were excluded with a Minor Risk of Bias. Also, 7 studies were excluded because they did not meet the GRADE. Significant improvement in anterior occlusion can be expected in most patients when maxillary or mandibular surgery is used for Class II open bite correction. However, there will be individual patients in whom there will be considerable post-treatment changes in the anteroposterior and vertical dimensions. Although individual morphology needs to be taken into account, it appears that both short-term and long-term stability are likely to be greater after Le Fort I surgery compared to bilateral sagittal split osteotomy

Leaf anatomy of Crambe abyssinica Hochst. during in vitro shoot induction

This study aimed to characterize and evaluate possible modifications in the leaf anatomy of crambe during the process of shoot induction based on micropropagation protocol. The anatomic characteristics of the leaves, and also the morphological characteristics of crambe plantlets, were evaluated during the shoot induction phase of the micropropagation. The shoots were induced by the cytokinins, 6-benzylaminopurine (BAP), kinetin (KIN) and thidiazuron (TDZ), at distinct concentrations on Murashige and Skoog (MS) medium during 120 days of culture. Comparing the leaf anatomy, it was observed that, at day 30, only the adaxial epidermis and the palisade parenchyma presented significant differences in relation to the tested concentrations, independently of the type of cytokinin employed. At 120 days, the anatomic analysis of the mesophyll demonstrated no marked difference among the cytokinins at 5 μM. Therefore, the various sources and concentrations of cytokinins applied in this work did not promote marked changes in the sense of altering the organization and/or thickness compared to the control.Key words: Oilseeds, micropropagation, mesophyll, histology, plant morphology

Efeito de resíduos de gesso e de granito em produtos da indústria de cerâmica vermelha: revisão bibliográfica

A indústria da cerâmica vermelha compreende materiais empregados na construção civil (tijolos, telhas, argila expandida, entre outros) e tem grande importância para o desenvolvimento econômico brasileiro, assim tem crescido a procura por seus produtos, causando um problema de escassez de reservas de matérias-primas de boa qualidade e em locais economicamente adequados. Outros materiais também utilizados na construção civil, como o granito (principal produto da indústria de rochas ornamentais) e gesso de revestimento tem apresentado crescimento em sua demanda, gerando, em seu processo de beneficiamento, grande quantidade de resíduos, provocando impacto negativo ao meio ambiente. A reciclagem de resíduos está cada vez mais em evidência em razão do grande volume gerado pelo setor. A indústria de cerâmica vermelha, por sua característica heterogênea, tem se destacado na incorporação de resíduos, tanto por apresentar vantagens, quanto pelo maior rigor das leis atuais. Assim, este trabalho tem por finalidade expor uma visão geral sobre os efeitos da utilização dos resíduos industriais, gesso e granito, em indústria de cerâmica vermelha, apresentando também resultados de trabalhos executados nesta área. Os resultados apontam quantidade escassa de pesquisas na área de reciclagem de resíduos de gesso e granito, e que a utilização dos mesmos em massa cerâmica está em conformidade com a legislação vigente e ainda contribui para a redução dos impactos negativos causados ao meio ambiente devido ao seu descarte em locais indevidos. Palavras-chave: Cerâmica Vermelha, Gesso, Granito, Resíduo, Reciclagem

Characterization of clay deposit in the central region of Piauí for use in the ceramic industry

The clay ceramics industry comprises materials used in construction (bricks, tiles, and expanded clay, among others), is of great importance for Brazilian economic development, and the industry is seeking new sources of raw material, mainly clay. The present work aims to characterize a clay deposit located in the central region of the state of Piauí, to make feasible its use as ceramic raw material, seeking to boost the clay ceramics industry. The chemical composition, the crystalline phases, and the plasticity of the clay were analyzed. Specimens were prepared by uniaxial pressing, dried in an oven at 110 °C, and then heated to 900 °C, 1000 °C, and 1100 °C. Bending strength, apparent porosity, linear shrinkage, water absorption, and mineralogical, macrostructural, and microstructural analyses were determined. The results showed an improvement in the indices with the increase in the firing temperature and that the samples showed a reddish coloration due to the presence of iron, as well as quartz and kaolinite. Thus, the clay deposit has the potential to become raw material for the clay ceramics industry in the state of Piauí.Keywords: clay, clay ceramics, deposits, technological properties.