We report the electrochemical potential of conductive filaments produced with recycled polylactic acid (rPLA) alongside a mixture of graphite (Gpt) and/or carbon black (CB) and castor oil to create an electrode ready-to-use. Additively-manufactured electrodes (AMEs) were compared with commercial-conductive filament composed of PLA and CB. The Gpt-CB-rPLA and CB-rPLA sensors showed lower charge-transfer resistance (Rct) and a greater heterogenous rate constant, k0, (Rct= 1040 ± 50 Ω and 1810 ± 30 Ω and k0= 6.91 (± 0.58) × 103 and 5.31 (± 0.40) × 103 cm s-1, respectively) compared to the sensor from the commercial filament (Rct = 9620 ± 280 Ω and k0 = 3.62 (± 0.38) ×10-3 cm s-1). The electrochemical response of [Fe(CN6)]3-/4- displayed a peak-to-peak separation of 180 ± 8 mV (Gpt-CB-rPLA) and 240 ± 6 mV (CB-rPLA) compared to commercial AME (740 ±10 mV), without any surface treatment. The filaments were used to create a 2,4,6-trinitrotoluene (TNT) detection platform with linear range of 5-20 and 5-100 µmol L-1 for Gpt-CB-rPLA and CB-rPLA, respectively. The collector-detector device was applied for the analysis of a blast simulation. Finally, it is worth noting that the results obtained are without electrode treatment/activation, indicating that the rough surface of the additively manufactured electrode is an additional feature of the device for collecting explosive residues, simply by rubbing the additively manufactured platform on different surfaces in crime scenarios. rPLA (rPLA Gpt (Gpt andor or CB (CB readytouse. readytouse ready use. use ready-to-use Additivelymanufactured Additively AMEs (AMEs commercialconductive GptCBrPLA CBrPLA chargetransfer charge transfer Rct constant k Rct= 104 5 181 3 691 91 6.9 ( 0.58 058 0 58 10 531 31 5.3 0.40 040 40 s1, s1 s 1, 1 s-1 respectively 962 28 362 62 3.6 0.38 038 38 ×103 ×10 ×10- s1. . s-1) FeCN63/4 FeCN634 FeCN Fe CN6 /4 4 CN [Fe(CN6)]3-/4 peaktopeak peak 18 (Gpt-CB-rPLA 24 (CB-rPLA 740 (74 ±1 mV, , mV) treatment 2,4,6trinitrotoluene 246trinitrotoluene trinitrotoluene 2,4,6 2 TNT (TNT 520 20 5-2 5100 100 5-10 L1 L L- CBrPLA, rPLA, collectordetector collector detector simulation Finally treatmentactivation activation treatment/activation residues scenarios 69 9 6. 0.5 05 53 5. 0.4 04 s- 96 36 3. 0.3 03 ×1 FeCN63 FeCN63/ / [Fe(CN6)]3-/ 74 (7 6trinitrotoluene 246 2,4, 52 5- 510 5-1 0. FeCN6 [Fe(CN6)]3- 7 2,4 51 [Fe(CN6)]3 2, [Fe(CN6)] [Fe(CN6) [Fe(CN6 [Fe(CN

The focus of this manuscript is to present the extension project “(Re)thinking the (in)differences: the deconstructions and resistance to transversal themes in the teaching of Natural Sciences”, as well as analyzing its potential when working with continued training work by teachers, promoting debate, discussion, and reflection on the use of contemporary cross-cutting themes in chemistry and science classes. It was also intended to stimulate class planning, the production of strategies and teaching material by educators motivated by the need to reform thinking and regenerate teaching, considering social themes that seek the empowerment of groups placed on the margins of the education system, so that they undertake training that is a collective achievement and built with social discussions. Rethinking Re indifferences differences (in)differences Sciences, Sciences , Sciences” teachers debate discussion crosscutting cross cutting classes planning system discussions

Considering the cytotoxic properties of Schiff base ligands, we re-synthesized a gold(III) complex with a tetradentate Schiff base ligand and investigated its cytotoxic effects using the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) method and sulforhodamine B staining method. The results showed that the gold(III) Schiff base complex can inhibit the growth of Chinese hamster ovary (CHO) cancer cell lines. However, unlike cisplatin, it does not induce cell death in NIH 3T3 normal cells. Real-time polymerase chain reaction (PCR) results revealed that the gold(III) Schiff base complex increased the Bak1/Bclx ratio in CHO cell line by 3.53-fold compared to the control, while cisplatin increased the anti-apoptotic Bclx gene by 31.8 times and the treatment resistance AKT1 gene by 430.8 times the control. However, cisplatin only activated the extrinsic pathway of apoptosis through the caspase-3 gene. The expression levels of TLR6 and TNF-α genes in normal cells showed that both the gold(III) Schiff base complex and cisplatin did not cause inflammation in NIH 3T3 cell lines. All the results indicate that the new complex could be a promising candidate to replace cisplatin. It has been shown that it induces apoptosis and prevents the development of resistance in cancer cells. Additionally, it does not cause inflammation in normal cells. ligands resynthesized re synthesized goldIII gold III gold(III 34,5dimethylthiazol2yl2,5diphenyltetrazolium 345dimethylthiazol2yl25diphenyltetrazolium dimethylthiazolyldiphenyltetrazolium 3 4,5 dimethylthiazol 2 yl 2,5 diphenyltetrazolium 4 5 bromide (CHO lines However T 3T Realtime Real time PCR (PCR Bak1Bclx BakBclx Bak1 Bak 3.53fold 353fold fold 3.53 53 control antiapoptotic anti apoptotic 318 31 8 31. AKT 4308 430 430. caspase3 caspase caspase- TLR TNFα TNF α Additionally 34 5dimethylthiazol2yl2 5diphenyltetrazolium 45 4, 25 2, 53fold 353 3.5 43 dimethylthiazolyl 5dimethylthiazol2yl 35 3.

ABSTRACT Purpose: Myopia, or nearsightedness, is one of the most common eye conditions worldwide. However, a comparison of the effectiveness of different laser-assisted interventions is lacking. Thus, we aimed to compare the efficacy and safety of LASIK and IntraLASIK in addressing myopia. Methods: The study was conducted in two ophthalmology clinics in Beijing, China, in 2022. A total of 84 patients (152 eyes) with different degrees of myopia were examined and underwent LASIK (n=46, 80 eyes) or IntraLASIK (n=38, 72 eyes). Keratometry, corneal topography, pachymetry, visual acuity evaluation, and corneal biomechanical analysis were performed before and after the intervention. Results: IntraLASIK produced more precise flaps than LASIK, with deviations of <8 mm and 0.1 mm from the intended thickness and diameter, respectively. LASIK resulted in nonuniform flaps, with thickness deviations of 5-86 mm. IntraLASIK demonstrated a superior efficacy for patients with severe myopia and thin corneas, with a mean spherical equivalent of 0.9 D at 6 months compared to the 1.4 D for LASIK. Approximately 91% and 83% of the patients with mild to moderate and severe myopia, respectively, achieved results within ± 0.49 D from the refractive target with IntraLASIK. Conclusions: Corneal hysteresis and corneal resistance factor decreased with an increase in laser intensity, and they decreased faster with thinner corneas. Thus, IntraLASIK is more useful than LASIK in patients with thin corneas and severe myopia. Purpose Myopia nearsightedness worldwide However laserassisted assisted lacking Thus Methods Beijing China 2022 8 152 (15 eyes n=46, n46 n 46 (n=46 n=38, n38 38 (n=38 7 eyes. . Keratometry topography pachymetry evaluation intervention Results < 01 0 1 0. diameter respectively 586 5 86 5-8 09 9 14 4 1. 91 83 049 49 0.4 Conclusions intensity 202 15 (1 n=46 n4 (n=4 n=38 n3 3 (n=3 58 5- 04 20 ( n=4 (n= n=3 2 n= (n

High-density polyethylene (HDPE) geomembranes are commonly used as an environmental protection liner due to their good chemical and mechanical resistances and low cost. Ultraviolet (UV) radiation is an essential issue in durability studies for pond applications. This study evaluated a 1.5-mm thick HDPE geomembrane exposed to ultraviolet fluorescent radiation for 8760 h in a laboratory and thermoanalytical and physical analyses were conducted towards the understanding of its performance after exposure. According to the results, although the geomembrane maintained the ductile behavior, it showed a 52.48% final decrease in stress crack resistance (SCR) compared to virgin SCR. Moreover, a considerable antioxidant depletion occurred after 8760 h exposure shown by the Std. OIT (standard oxidative-induction time) results, demonstrating a Std. OIT value decrease of 89.19% compared to the virgin Std. OIT. Such a behavior contributed to the susceptibility of thermal effects in the DSC (differential scanning calorimetry) curves and the losses observed in the SCR values, attesting the geomembrane’s oxidative degradation mechanism occurred and changed the polymer’s structure. Highdensity High density (HDPE cost UV (UV applications 1.5mm 15mm mm 1.5 1 5 876 results 5248 52 48 52.48 (SCR Moreover Std standard oxidativeinduction induction time 8919 89 19 89.19 differential calorimetry values s polymers polymer structure 5mm 15 1. 87 524 4 52.4 891 8 89.1 52. 89.

This study highlights the synthesis of innovative polyurethane materials derived from Moringa oleifera oils extracted from two distinct sources. The oils were converted into their respective polyols through the in situ generated performic acid method. Diverse material characteristics were observed due to different agroclimatic and cultivation conditions for the sources. Extraction yields were 45.21% (source 1) and 40.32% (source 2), with acid values of 28.70 and 26.00 mg KOH per g of oil, respectively. Oleic acid constituted 79.87 and 67.11% of the oils composition, respectively. Nuclear magnetic resonance and Fourier transform infrared spectroscopy (FTIR) confirmed the hydroxylation of the oils. FTIR also identified the isocyanate structures in the synthesized polyurethane materials. Gel permeation chromatography analysis revealed a higher oligomer content in the polyol synthesized from the oil extracted from source 2. Thermogravimetric analysis demonstrated enhanced thermal stability post-oil conversion, highlighting decomposition stages for rigid and flexible segments. Differential scanning calorimetry indicated higher unsaturation in the oil extracted from source 1, resulting in an elevated crystallization temperature. Tensile testing showed increased elasticity as the [NCO]/[OH] ratio decreased in the material, emphasizing the influence of polyol and crosslinking agent concentrations on mechanical resistance of polyurethane materials. sources method 4521 45 21 45.21 1 4032 40 32 40.32 2, 2 , 2) 2870 28 70 28.7 2600 26 00 26.0 respectively 7987 79 87 79.8 6711 67 11 67.11 composition (FTIR postoil post conversion segments temperature NCO/OH NCOOH NCO / OH [NCO]/[OH 452 4 45.2 403 3 40.3 287 7 28. 260 0 26. 798 8 79. 671 6 67.1 45. 40. 67.

Abstract This study handles the possibility of formulating artisanal paints for wall paintings whose pigments come from plants, considering the need for additives and techniques capable of guaranteeing a good performance for internal walls of buildings. The lack of recipes and publications on the proportion of each component to obtain a paint with good performance motivated the preparation of the present research, in which formulations were developed through experimental design of mixtures to obtain homogeneous suspensions that comply with the limits stipulated by NBR 15079-1:2021. The performance of the mixtures in the Abrasion Resistance Test was evaluated according to the variations in the proportions of the components of the mixtures, and the pH and viscosity variable. The results indicate that the highest levels of abrasion resistance were achieved by raising the levels of pigment and bactericide, while high pH indices showed high viscosity and good performance against abrasion resistance, and vice versa. Through this study, it is concluded that it is possible to elaborate paints with Curcuma Longa L. pigments and natural inputs with satisfactory performance for the application and elaboration of mural paintings on internal walls of buildings. plants buildings research 1507912021. 1507912021 15079 1 2021. 2021 15079-1:2021 variable bactericide versa L 150791202 1507 202 15079-1:202 15079120 150 20 15079-1:20 1507912 15 2 15079-1:2 150791 15079-1: 15079-1 15079-

Resumo Opresente estudo buscou formular tintas artesanais para pinturas de murais cujos pigmentos sejam oriundos de plantas, considerando a necessidade de aditivos e técnicas capazes de garantir um bom desempenho para paredes internas de edificações. A falta de receitas e publicações sobre a proporção de cada componente para a obtenção de uma tinta com bom desempenho motivou a elaboração da presente pesquisa, em que foram desenvolvidas formulações através de delineamento experimental de misturas para obter suspensões homogêneas que estejam em conformidade com os limites de desempenho definidos pela NBR 15079-1:2021. O desempenho das misturas frente ao ensaio de resistência à abrasão (RAU) foi avaliado de acordo com as variações das proporções dos componentes das misturas e as variáveis de pH e viscosidade. Os resultados indicam que os índices mais elevados de RAU foram alcançados ao elevar os níveis de pigmento e bactericida, ao passo que altos índices de pH apresentaram viscosidade elevada e bom desempenho frente à RAU, e vice-versa. Através do presente estudo, conclui-se que é possível elaborar tintas com pigmentos de Curcuma Longa L. e insumos naturais com desempenho satisfatório para aplicação e elaboração de pinturas murais em paredes internas de edificações. plantas edificações pesquisa 1507912021. 1507912021 15079 1 2021. 2021 15079-1:2021 (RAU bactericida viceversa. viceversa vice versa. versa vice-versa concluise conclui se L 150791202 1507 202 15079-1:202 15079120 150 20 15079-1:20 1507912 15 2 15079-1:2 150791 15079-1: 15079-1 15079-

Abstract There are several characteristics that influence fire resistance of load-bearing masonries, wherein stand out the bricks compressive strength. Verification of wall systems fire behavior was conducted as prescribed by NBR 5628. This research aims to comparatively analyze fire resistance in real scale load-bearing walls, considering thermal insulation, structural stability, and airtightness. The thickness of the coating and laying mortar were standardized for all specimens just varying brick geometry and septs design in blocks of EST 60, 100, and 140 class. The obtained results show that the compressive strength of the bricks can induce both the structural stability of the constructive systems and its thermal insulation, being a typically critical characteristic for clay brick walls in a building fire. The sample with the highest compressive strength obtained the shortest local displacement, contributing to mitigate the generation of fissures in the system, enhancing the thermal insulation of the clay brick wall, and, thereby, its fire resistance. loadbearing load bearing masonries 5628 airtightness 60 100 14 class displacement system thereby 562 6 10 1 56 5

Resumo Diversas características influenciam a resistência ao fogo de sistema de parede em alvenaria estrutural, dentre as quais pode se incluir sua resistência à compressão. O comportamento desse sistema é validado experimentalmente conforme a norma NBR 5628. Esse estudo tem como objetivo analisar comparativamente a resistência ao fogo obtida através de ensaios em escala real em alvenaria estrutural, envolvendo as características de isolamento térmico, estanqueidade a passagem de gases e fumaça e estabilidade estrutural. Foram avaliados componentes com a mesma configuração em termos de revestimento e assentamento, assumindo como variável a resistência a compressão dos blocos, tendo sido considerados neste estudo blocos de classe EST 60, 100 e 140. Os resultados obtidos apontam que a resistência à compressão da alvenaria pode influenciar, além da estabilidade estrutural do sistema, também seu isolamento térmico, critério tipicamente crítico para alvenarias de blocos cerâmicos em situação de incêndio. A amostra de maior resistência à compressão apresentou menor deslocamento horizontal, contribuindo para mitigar a geração de fissuras, aumentando a oposição da alvenaria à passagem da temperatura ao longo de sua seção transversal e assim aumentar sua resistência ao fogo. 5628 térmico assentamento 60 10 140 influenciar incêndio horizontal fissuras 562 6 1 14 56 5

Resumo A produção de tintas utilizando resíduos de beneficiamento de granito e mármore é uma nova alternativa para contribuir com o desenvolvimento sustentável na construção civil. Entretanto, a carência de estudos sobre a composição e o desempenho dessas tintas inviabiliza a disseminação desse novo material de construção. Logo, este estudo tem como objetivo investigar a composição dessas tintas utilizando ferramentas estatísticas para obter produtos com desempenho compatível com regulamentações técnicas e tintas comerciais. As formulações de tintas foram definidas através de um planejamento de misturas quaternárias. O teor de sólidos, pH, viscosidade, poder de cobertura e resistência à abrasão foram determinados para todas as amostras. As tintas produzidas com resíduos de granito apresentaram melhor poder de cobertura e resistência à abrasão, pois o resíduo de granito apresenta granulometria mais fina, além de ser predominantemente composto por sílica. Por fim, as tintas produzidas neste estudo e as tintas comerciais apresentaram comportamento semelhante, o que corrobora com o aproveitamento do resíduo do processamento de rochas ornamentais na produção de tintas. civil Entretanto Logo quaternárias sólidos pH viscosidade amostras fina sílica fim semelhante

Abstract The production of paints using waste from granite and marble processing is a new alternative to contribute to sustainable development in civil construction. However, the lack of studies on the composition and performance of these paints makes the dissemination of this new construction material unfeasible. Therefore, this study aims to investigate the composition of these paints using statistical tools to obtain products with performance compatible with technical regulations and commercial paints. The paint formulations were defined through a quaternary mixture planning. The solids content, pH, viscosity, hiding power, and abrasion resistance were determined for all samples. The paints produced with granite waste showed better hiding power and abrasion resistance, as granite waste has a finer granulometry, in addition to being predominantly composed of silica. Finally, the paints produced in this study and the commercial paints showed similar behavior, which supports the use of waste from the processing of ornamental rocks in paint production. However unfeasible Therefore planning content pH viscosity samples granulometry silica Finally behavior

Resumo Analisou-se a viabilidade técnica e ambiental da Erythrina poeppigiana para produzir compensados com os adesivos: fenol-formaldeído (FF); uréia-formaldeído (UF) e poliuretano à base de mamona (PU). Avaliou-se as propriedades física e mecânica: densidade aparente, teor de umidade, absorção de água, inchamento em espessura, resistência ao cisalhamento e flexão estática. Os testes apontaram a viabilidade da eritrina para produção de compensados não estruturais. A avaliação ambiental, através dos indicadores, quantificação da energia embutida e emissão de CO 2 e, demonstrou que os pain compensado produzido com adesivo PU teve melhor desempenho que os painéis com FF e UF. O tratamento T1 (FF) apresentou maior energia embutida, o T2 (UF) a maior emissão de CO 2 e. A viabilidade técnica e ambiental da eritrina para produzir compensados pode promover o desenvolvimento socioeconômico regional, ambientalmente sustentável, com vantagens em relação aos compensados estrangeiros, bem como ao desempenho ambiental. Analisouse Analisou se adesivos fenolformaldeído fenol formaldeído uréiaformaldeído uréia UF (UF PU. . (PU) Avaliouse Avaliou mecânica aparente umidade água espessura estática estruturais indicadores T (FF regional sustentável estrangeiros (PU

Abstract The study analyzed the technical and environmental feasibility of using Erythrina poeppigiana to produce plywood with different adhesives: phenol-formaldehyde (PF), urea-formaldehyde (UF), and castor oil-based polyurethane (PUA). The physical and mechanical properties of the plywood were evaluated, including apparent density, moisture content, water absorption, thickness swelling, shear resistance, and static bending. Tests proved erythrina’s suitability for non-structural plywood production. The environmental impact of the production process was also evaluated, using embedded energy and CO2e emissions as indicators. The results showed that plywood produced with PU adhesive had better environmental performance compared to panels with FF and UF adhesives. T1 treatment (PF) had the highest embodied energy, while T2 (UF) had the highest CO2e emission. Overall, the study suggests that using erythrina to produce plywood can be a viable option for promoting regional socioeconomic development while also being environmentally sustainable and presents an advantage over foreign plywood in terms of environmental performance. adhesives phenolformaldehyde phenol formaldehyde PF, PF , ureaformaldehyde urea UF, oilbased oil based PUA. PUA . (PUA) evaluated density content absorption swelling resistance bending erythrinas s nonstructural non structural COe CO e indicators T (PF (UF emission Overall (PUA

Abstract Sanitary ware waste (RLS) is proposed as an ecologically environmental alternative, replacing fine aggregates and gravel, used in the production of self-compacting concrete (SCC). The environmental efficiency in energy life cycles and carbon dioxide emissions of SCC with different mixtures of RLS, were compared with the self-compacting concrete without RLS (CAA_REF). The Life Cycle Assessment (LCA) showed that the replacement of RLS aggregates in CAA_REF, can generate an absolute reduction of approximately 45.42 MJ/m³ and 2.67 kg of CO2/m³ respectively, which corresponds to reductions of 2.2% and 0.6%. It was also verified that the use of an indicator of eco-efficiency of the environmental behavior in relation to the parameter mechanical resistance to compression, can contribute and be adequate in projects of dosages of SCC. Thus, it was observed that the use of RLS can contribute to environmental sustainability, reducing the inadequate disposal of RLS in the environment and implementing an adequate reuse. (RLS alternative gravel selfcompacting self compacting . (SCC) CAA_REF. CAAREF CAA_REF CAA REF (CAA_REF) LCA (LCA 4542 45 42 45.4 MJm³ MJm MJ m³ m MJ/m 267 2 67 2.6 CO2m³ COm CO2 CO CO2/m respectively 22 2.2 06 0 6 0.6% ecoefficiency eco compression Thus sustainability reuse (SCC (CAA_REF 454 4 45. 26 2. CO2m 0.6 0.

Resumo O resíduo de louça sanitária (RLS) é alvitrado como uma alternativa ecologicamente ambiental, em substituição aos agregados finos e pedriscos, empregados na produção de concretos autoadensáveis (CAA). A eficiência ambiental nos ciclos de vida energético e das emissões de dióxido de carbono de CAA com diferentes misturas de RLS, foram comparadas com o concreto autoadensável sem RLS (CAA_REF). A Análise do Ciclo de Vida (ACV) evidenciou que a substituição de agregados de RLS em CAA_REF, pode gerar uma redução absoluta de aproximadamente 34,70 MJ/m³ e 2,07 kg de CO2/m³, respectivamente, o que corresponde a reduções de 1,5% e 0,5%. Verificou-se ainda que o uso de um indicador de ecoeficiência do comportamento ambiental em relação ao parâmetro resistência mecânica à compressão, pode contribuir e ser adequado em projetos de dosagens de CAA. Assim, observou-se que o uso de RLS, pode colaborar para a sustentabilidade ambiental, reduzindo a disposição inadequada dos RLS no meio ambiente e implementado um reuso adequado. (RLS pedriscos . (CAA) CAA_REF. CAAREF CAA_REF REF (CAA_REF) ACV (ACV 3470 34 70 34,7 MJm³ MJm MJ m³ m MJ/m 207 2 07 2,0 CO2m³ COm CO2 CO CO2/m³ respectivamente 15 1 5 1,5 05 0 0,5% Verificouse Verificou se compressão Assim observouse observou (CAA (CAA_REF 347 3 7 34, 20 2, CO2m CO2/m 1, 0,5 0,

Abstract The objective of this research was to evaluate the quality of panels produced with different proportions of Pinus oocarpa wood particles and industrial cigarette waste. The wood came from an experimental field and the cigarette waste was obtained through a donation. The particles were mixed in different proportions (100% pine particles, 90% pine particles and 10% cigarette particles, 80% pine particles and 20% cigarette particles, 70% pine particles and 30% cigarette particles). The results showed that all particleboards reached the minimum value specified by NBR 14810-2 (ABNT, 2018) for Thickness Swelling (TS). All mechanical properties evaluated showed a reduction in values with the addition of cigarette residue particles and the values obtained did not meet the minimum specified by the standard used for the modulus of rupture and modulus of elasticity. Regarding internal adhesion, the panels for T3 and T4 treatments reached the minimum value required by Brazilian standards. The thermal resistance of the panels increased with the inclusion of cigarette residue particles, but the effect was low depending on R 2 . donation 100% 100 (100 90 10 80 20 70 30 particles. particles) 148102 14810 14810- ABNT, ABNT (ABNT 2018 TS. TS (TS) elasticity adhesion T standards (10 9 1 8 7 3 1481 201 (TS (1 148 ( 14

Resumo O objetivo desta pesquisa foi avaliar a qualidade de painéis produzidos com diferentes proporções de partículas de madeira de Pinus oocarpa e resíduos de cigarro industrializado. As partículas foram misturadas em diferentes proporções (100% de partículas de pinus, 90% de partículas de pinus e 10% de partículas de cigarro, 80% de partículas de pinus e 20% de partículas de cigarro, 70% de partículas de pinus e 30% de partículas de cigarro). Os resultados evidenciaram que todos os painéis aglomerados atingiram o valor mínimo especificado pela NBR 14810-2 (ABNT, 2018) para o Inchamento em Espessura (IE). Todas as propriedades mecânicas avaliadas evidenciaram redução nos valores com a adição das partículas de resíduos de cigarro e os valores obtidos não atenderam ao mínimo especificado pela norma utilizada para o módulo de ruptura e módulo de elasticidade. Em relação a ligação interna os painéis dos tratamentos T3 e T4 atingiram o valor mínimo requerido pela norma brasileira. A resistência térmica dos painéis aumentou com a inclusão das partículas de resíduos de cigarro, porém o efeito foi baixo em função do R2. industrializado 100% 100 (100 90 10 80 20 70 30 cigarro. . cigarro) 148102 14810 2 14810- ABNT, ABNT (ABNT 2018 IE. IE (IE) elasticidade T brasileira R2 R (10 9 1 8 7 3 1481 201 (IE (1 148 ( 14

Abstract This work evaluated the influence of impregnation of boron compounds, in three concentrations, on Pinus sp. veneers, and its effect on the properties of plywood. The experiment was carried out in a completely randomized design, in a 3 × 3 + 1 factorial scheme, with three boron compounds (boric acid, borax, and disodium octaborate tetrahydrate) and three solution concentrations (1%, 3%, and 5%) plus the control. The panels were produced with three or five veneers, depending on the test, impregnated by dipping in boron compound solutions for 15 min and bonded with urea-formaldehyde adhesive. The apparent density, water absorption, thickness expansion, hygroscopicity, resistance to static bending (parallel and perpendicular to the grain) and shear strength were evaluted. All tests were carried out following the European Committee for Standardization, and the results were compared to the Brazilian Association of Mechanically Processed Wood requirements. Based on the results, it is recommended to use boric acid at a concentration of 1% or 3% or the other compounds tested at a concentration of 1%. sp veneers plywood design scheme borax tetrahydrate 1%, (1% 5% 5 control test ureaformaldehyde urea formaldehyde adhesive density absorption expansion hygroscopicity parallel grain evaluted Standardization requirements (1 (

Resumo Objetivou-se avaliar a influência da impregnação de compostos de boro, em três concentrações, em lâminas de Pinus sp., e seu efeito nas propriedades de compensados. O experimento foi realizado em delineamento inteiramente casualizado, em esquema fatorial 3 × 3 + 1, sendo três compostos de boro (ácido bórico, bórax e octaborato dissódico tetrahidratado) e três concentrações (1%, 3% e 5%) mais o controle. Os painéis foram produzidos com três ou cinco lâminas, encolados com uréia-formaldeído, com as lâminas impregnadas por imersão nas soluções de compostos de boro por 15 min. Foram avaliadas a densidade aparente, absorção de água, expansão de espessura, higroscopicidade, resistência à flexão estática (paralela e perpendicular à grã) e resistência ao cisalhamento. Todos os testes foram realizados de acordo com o Comitê Europeu de Padronização. Para o controle de qualidade, os resultados foram comparados com as exigências da Associação Brasileira de Madeira Processada Mecanicamente. Com base nos resultados, recomenda-se usar ácido bórico na concentração de 1% ou 3% ou os demais compostos testados na concentração de 1%. Objetivouse Objetivou se sp sp. compensados casualizado 1 tetrahidratado 1%, (1% 5% 5 uréiaformaldeído, uréiaformaldeído uréia formaldeído, formaldeído uréia-formaldeído min aparente água espessura higroscopicidade paralela grã cisalhamento Padronização qualidade Mecanicamente recomendase recomenda (1 (

Abstract: Objective: To determine the antibiotic storage characteristics of families in a suburban population in Mexico. Methodology: The study approach is quantitative, observational, cross-sectional and descriptive in scope. The unit of study was families living in the area under study in a suburban zone of Mexico. Results: A total of 235 families were surveyed, within which there are different age groups, with 153 families predominantly aged between 36 and 64 years old. It was obtained that more than 70 % presented illnesses and, regarding the possibility that they had stored expired or soon to expire antibiotic drugs, 68.1 % mentioned that it was not likely. Conclusions: The significant number of adult population, the wide presence of comorbidities and various sociodemographic factors impact practices and attitudes regarding the ways in which families obtain, use, store and dispose of medications within their homes. This research seeks to contribute to the awareness and creation of various programs for the adoption of safety measures for the storage of medicines within the home, as well as to serve as a guide in the identification of optimal, efficient and effective procedures to deal with this phenomenon.

Resumo: Objetivo: Determinar as características do armazenamento de antibióticos das famílias em uma população suburbana no México. Metodologia: A abordagem do estudo é quantitativa, observacional, transversal e de escopo descritivo. A unidade de estudo foram as famílias que viviam na área de estudo de uma zona suburbana no México. Resultados: Foram pesquisadas 235 famílias, de diversas faixas etárias, das quais predominaram as idades de 36 a 64 anos em 153 famílias. Verificou-se que mais de 70% apresentavam enfermidades, e com relação à possibilidade de terem medicamentos antibióticos vencidos ou prestes a vencer armazenados, 68,1 % mencionaram que não era provável. Conclusões: O significativo número de população adulta, a ampla presença de comorbidades e vários fatores sociodemográficos impactam nas práticas e atitudes relativas às formas como as famílias obtêm, usam, armazenam e descartam medicamentos em suas residências. Esta pesquisa busca contribuir para a conscientização e a criação de vários programas para a adoção de medidas de segurança para o armazenamento de medicamentos em casa, bem como servir de guia na identificação de procedimentos ideais, eficientes e eficazes para lidar com esse fenômeno.

Resumen: Objetivo: Determinar las características de almacenamiento de los antibióticos de las familias en una población suburbana en México. Metodología: El enfoque del estudio es cuantitativo, observacional, de corte transversal y alcance descriptivo. La unidad de estudio fueron las familias que vivían en el área de estudio de una zona suburbana en México. Resultados: Se encuestaron un total de 235 familias, dentro de las cuales existen diversos grupos etarios, de los cuales predominaron las edades de entre 36 a 64 años en 153 familias. Se obtuvo que más del 70 % presentaban enfermedades y, respecto a la posibilidad de que tuviesen almacenados medicamentos antibióticos caducados o próximos a caducar, el 68.1 % mencionó que no era probable. Conclusiones: El importante número de población adulta, la amplia presencia de comorbilidades y diversos factores sociodemográficos impactan en las prácticas y actitudes en relación con las formas en que las familias obtienen, usan, almacenan y desechan los medicamentos dentro de sus hogares. Esta investigación busca contribuir a la concientización y creación de diversos programas para la adopción de medidas de seguridad para el almacenamiento de medicamentos dentro del hogar, así como servir de guía en la identificación de procedimientos óptimos, eficientes y eficaces para tratar este fenómeno.

Abstract Introduction: various human groups have been trapped by the networks of narcopolitics. Many ethnic communities, products of marginalization and systematic discrimination from colonial times to the present, have been co-opted by drug traffickers for their benefit. Objective: analyze the role that indigenous communities have played in the interdependencies between drug traffickers and politicians, in the territories of the Tsotsiles and the Tseltales of the Altos de Chiapas - Mexico. Methodology: carries out a qualitative investigative and exploratory type, which includes technical observation of the participants, unstructured interviews with inhabitants of the area and review of secondary sources. The analysis considers elements of the discourse and is present in historical sequence. The study was based on the theory of resource dependence, recognizing different strategies for resistance. Conclusions: the communities studied have managed to remain distant from the power of drug traffickers. On the one hand, through the strategy of stealthy transfer to municipalities adjacent to where the cartels have begun to have a presence. And second, social cohesion was achieved due to a strong system of political positions, which prevents members of organizations that compete for scarce resources from reaching high levels of the administrative hierarchy of the communities.

Resumo Introdução: vários grupos humanos foram encurralados pelas redes da narcopolítica. Muitas comunidades étnicas, produtos da marginalização e da discriminação sistemática desde os tempos coloniais até ao presente, foram cooptadas pelos traficantes de droga para seu benefício. Objetivo: analisar o papel que as comunidades indígenas têm desempenhado nas interdependências entre traficantes de drogas e políticos, nos territórios dos Tsotsiles e dos Tseltales dos Altos de Chiapas - México. Metodologia: realiza um tipo qualitativo investigativo e exploratório, que inclui observação técnica dos participantes, entrevistas não estruturadas com moradores da área e revisão de fontes secundárias. A análise considera elementos do discurso e está presente na sequência histórica. O estudo baseou-se na teoria da dependência de recursos, reconhecendo diferentes estratégias de resistência. Conclusões: as comunidades estudadas conseguiram manter-se distantes do poder dos traficantes de drogas. Por um lado, através da estratégia de transferência furtiva para municípios adjacentes onde os cartéis começaram a ter presença. E em segundo lugar, a coesão social foi alcançada devido a um forte sistema de posições políticas, que impede os membros de organizações que competem por recursos escassos de alcançar altos níveis da hierarquia administrativa das comunidades.

Resumen Introducción: diversos grupos humanos han sido atrapados por las redes de la narcopolítica. Muchas comunidades étnicas, producto de la marginación y la discriminación sistemática desde tiempos coloniales hasta la actualidad, han sido cooptadas por los narcos para su beneficio. Objetivo: analizar el papel que han jugado las comunidades indígenas frente a las interdependencias entre narcos y políticos, en territorios de los Tsotsiles y los Tseltales de los Altos de Chiapas, México. Metodología: se realizó una investigación exploratoria de tipo cualitativo, que incluyó las técnicas de observación participante, entrevistas desestructuradas con habitantes de la zona y revisión de fuentes secundarias. El análisis considera elementos del discurso, presentados siguiendo una secuencia histórica. El estudio se apoyó en la teoría de dependencia de recursos, que reconoce diferentes estrategias para su resistencia. Conclusiones: las comunidades estudiadas han logrado permanecer distantes al poder de los narcos. Por un lado, mediante la estrategia de traslado sigiloso hacia municipios adyacentes a donde han empezado tener presencia los carteles. Y segundo, la cohesión social se logró debido a un fuerte sistema de cargos políticos, que impide a integrantes de organizaciones que compiten por recursos escasos, alcanzar altos niveles de la jerarquía administrativa de las comunidades.