Reactive Ones Research Articles

The Correlation between Aggression, Self-esteem and Cyberbullying among Undergraduates in Malaysia

The prevalence of cyberbullying cases has been increasing over the years and it causes detrimental effects on one's mental health and psychological well-being. This cross-sectional research aims to determine the significant relationship between proactive aggression, reactive aggression and self-esteem on cyberbullying among undergraduates in Malaysia. 255 participants were recruited through purposive sampling. Questionnaires were distributed online via social media platforms such as Facebook, Instagram, WhatsApp, and Twitter. Three validated and reliable self-report measures were used to gather responses for this including Reactive-Proactive Aggression Questionnaire (RPQ), Rosenberg Self-esteem Scale (RSES) and Cyberbullying Test (CT). RPQ consists of 23 items followed by RSES with 10 items and lastly, CT consists of 45 items. All measures yielded a high reliability ranging from .84 to .95. The present study has found that proactive and reactive aggressions have a significant positive relationship with cyberbullying perpetration. However, proactive aggression has a stronger relationship as compared to reactive ones. Those with high proactive aggressions tend to involve more in cyberbullying as compared to reactive aggression. Moreover, it also found a negative but non-significant relationship between self-esteem and cyberbullying perpetration among undergraduates in Malaysia. It shows that those with high self-esteem tend to be cyberbullying victims but not perpetrators due to their frequent usage of social media. This study implies that it could be useful to tackle those involved in proactive aggressions as compared to reactive aggression and those with high self-esteem. Healthy ways to channel proactive aggression in which perpetrator seeks reward or dominance should be identified rather than focusing on those who reacts aggressively to a threat or provocation.

An Advanced Fitness Based Routing Protocol for Improving QoS in VANET

The vehicular ad-hoc network (VANET) is the one Ad-hoc network in wireless which establishes sufficient communication between the vehicles. Improving the quality of service (QoS) in VANET is one of the demanding and crucial processes in recent days. For this reason, various routing protocols, such as proactive and reactive ones, are developed in the present works. Even though it still lacks because of limitations like reduced energy, packet delivery, throughput, and increased delay. Due to these shortcomings, an advanced protocol with reactive routing known as the fitness based ad-hoc on-demand distance vector (FBAODV) will be introduced in the proposed work with the novel computation of received signal strength indication along with the normal steps found in AODV like distance, velocity, mobility, direction. The functioning stages involved in this proposed work will be network formation, neighbour discovery, fitness function estimation, and routing process. After forming the network with a set of wireless nodes, the routes will be discovered between the source node and destination node by broadcasting the Hello message packets. Then, the nearest neighbouring nodes will be identified by calculating the Euclidean distance. Here, the fitness function considered is estimated by selecting the reliable nodes based on the parameters of QoS. Consequently, the routing process will be established by finding the cost for the routing paths that had been deployed earlier. By using this cost value, the reliable communicating nodes will then be selected for the packets export from the source to destination. During the network simulation, various performance measures will then be taken into account to evaluate our proposed FBAODV protocol. Also, we prove the efficiency by comparing it with other traditional protocols.

MORPHOLOGICAL CHARACTERISTIC OF THE SPLEEN AS A HEMOLYMPHOID ORGAN WHEN INVADED BY OPISTHORCHIS FELINEUS (RIVOLTA)

For the first time, we have studied the morphological picture of changes occurred in the spleen during invasion by Opisthorchis felineus (Rivolta), which was simulated in large rodents (rabbits). The experiment was performed on 16 animals infected orally with 50 metacercaria each. Histological sections of the spleen were made and stained with hematoxylin-eosin and by Van Gieson’s stain. Histological preparations were studied by the light microscopy method with morphography and morphometry, and the data obtained were processed statistically. There were morphological characters found of moderate stromal fibrosis, as well as infiltration of the mantle zone of lymphoid follicles by mast cells with partially degranulated cytoplasm, and areactive follicles as related to reactive ones which were exceeded by three times. Homogeneous islands of oxyphilic substance were found in the stroma. Thus, in the course of the experiment, morphological changes were found in the spleen invaded by Opisthorchis felineus (Rivolta), which were manifested in the organ fibrosis due to the moderate collagenogenesis through active fibroblasts. The lymphoid tissue of the white pulpa was characterized by inhibited formation of germinal centers in the most lymphoid follicles. The stromal component reconstruction with the displacement of lymphoid tissue was noted. Mast cells in the white pulpa characterize inflammatory and allergic reactions.

An unsustainability issue: the antagonism between fossil energy use and public health in China

The environmental pollution and human health damages in China reached the point, when the country's policy has to change direction by developing new strategies to substantially increase the share of renewable energy sources in their energy mix and reduce environmental pollution. This research will try to identify the potential variables of the antagonistic conflict regarding the constantly growing energy consumption vs. human health damages and environmental pollution in China. The identification of variables will be carried out through the lens of Sustainable Development Theory. This paper tries to weight the interactions among variables, find the most reactive and influential ones in order to give suggestions to changes in the policy. The interaction among variables will be measured by using the Multi-Attribute Utility Theory and Cross-impact Matrix. Finally, the social vulnerability of the society will be discussed, where serious public health problems occur in case of world health crises such as the COVID-19 pandemic, which is particularly dangerous for those groups, which suffer from respiratory and cardiovascular diseases and immuno-deficiency problems.

Deconstructing Disruptive Industry Technological Models: Concord between Smoking and Vaping

Domination of the tobacco industry’s innovative business models has forced many countries to develop defensive tobacco control strategies. Pakistan has been routinely adopting new legislation for this industry for the past several decades. However, constant tension exists between the legislative/policy development process and the transnational tobacco industry trying to outpace and evade new regulations. Expanding on the ‘Disruptive Industry Technological Model’ adopted by the transnational tobacco industry, this paper posits that the business model adopted during the previous century was radically disruptive, focusing on selling a product designed to kill almost half of its customers (WHO 2020). Subsequently, during the first two decades of the 21st Century, the tobacco industry adopted the ‘Electronic Nicotine Delivery Systems (ENDS)’ to displace its traditional cigarette sales. This paper deconstructs the adoption of such radically disruptive technological models by the tobacco industry and finds concord between both. It recommends the development of broad-spectrum proactive and preventive policies for Pakistan instead of reactive ones in the tobacco control regime. 

The effect of particle polydispersion in a gasifier bed dynamics using Eulerian-Eulerian models

The influence of the coal particle size distribution on the performance of a fluidized bed gasifier is investigated by means of a multiphase Eulerian-Eulerian model embodied in the OpenFOAM CFD code. To distinguish the effects of combustion from those of particle segregation we compare the solutions obtained by modeling of solids as, alternatively, monodispersed or polydispersed particles; and as reactive or inert ones. Results reveal that the preferential motion of the smaller particles towards the bed top significantly delays char consumption at the bottom layers, favors volatile oxidation, and results in a more uneven lateral distribution of the off-gas.

Firm Constraints on the Link between Proactive Innovation, Open Innovation and Firm Performance

This study aims to examine the impacts of firm constraints and proactive innovation on firm performance, using a sample of 3504 small and medium enterprises (SMEs) in Vietnam from 2011–2015. Our findings suggest that technological innovations in general are beneficial to firm performance, increasing firm sales and profits. Further filtering innovations into two categories of proactive and reactive ones, we find that reactive innovation negatively affects firm performance, consistent with the view that proactive entrepreneurial behavior is a highly sought-after characteristic or a valuable resource for a firm as specified in resources-based theory. Finally, our result implies that if firms have low constraint or have sufficient resources, proactive strategies should be the choice if firms seek to improve their performance.

Synthesis and Characterization of Versatile O-Glycan Precursors for Cellular O-Glycomics

Protein O-glycosylation is a universal post-translational modification and plays essential roles in many biological processes. Recently we reported a technology termed cellular O-glycome reporter/amplification (CORA) to amplify and profile mucin-type O-glycans of living cells growing in the presence of peracetylated Benzyl-α-GalNAc (Ac3GalNAc-α-Bn). However, the application and development of the CORA method are limited by the properties of the precursor benzyl aglycone, which is relatively inert to further chemical modifications. Here we described a rapid parallel microwave-assisted synthesis of Ac3GalNAc-α-Bn derivatives to identify versatile precursors for cellular O-glycomics. In total, 26 derivatives, including fluorescent and bioorthogonal reactive ones, were successfully synthesized. The precursors were evaluated for their activity as acceptors for T-synthase and for their ability to function as CORA precursors. Several of the precursors possessing useful functional groups were more efficient than Ac3GalNAc-α-Bn as T-synthase acceptors and cellular O-glycome reporters. These precursors will advance the CORA technology for studies of functional O-glycomics.

A predictive model for the maintenance of industrial machinery in the context of industry 4.0

The Industry 4.0 paradigm is being increasingly adopted in the production, distribution and commercialization chains worldwide. The integration of the cutting-edge techniques behind it entails a deep and complex revolution – changing from scheduled-based processes to smart, reactive ones – that has to be thoroughly applied at different levels. Aiming to shed some light on the path towards such evolution, this work presents an Industry 4.0 based approach for facing a key aspect within factories: the health assessment of critical assets. This work is framed in the context of the innovative project SiMoDiM, which pursues the design and integration of a predictive maintenance system for the stainless steel industry. As a case of study, it focuses on the machinery involved in the production of high-quality steel sheets, i.e. the Hot Rolling Process, and concretely on predicting the degradation of the drums within the heating coilers of Steckel mills (parts with an expensive replacement that work under severe mechanical and thermal stresses). This paper describes a predictive model based on a Bayesian Filter, a tool from the Machine Learning field, to estimate and predict the gradual degradation of such machinery, permitting the operators to make informed decisions regarding maintenance operations. For achieving that, the proposed model iteratively fuses expert knowledge with real time information coming from the hot rolling processes carried out in the factory. The predictive model has been fitted and evaluated with real data from ∼118k processes, proving its virtues for promoting the Industry 4.0 era.

Exploiting Strained Rings in Chelation Guided C-H Functionalization: Integration of C-H Activation with Ring Cleavage.

Strained ring systems are regarded as privileged coupling partners in directed C-H bond functionalization and have emerged as a potential research area in organic synthesis. The inherent ring strain in these systems acts as a driving force, allowing the facile construction of diversified structural scaffolds via integrating C-H activation and ring-scission. The mechanistic underpinnings allows the implementation of a plethora of C-H bonds across plentiful organic substrates, including the less reactive alkyl ones. Considering the synthetic space, this area will foster developments of novel synthetic methods in chelation guided C-H functionalization. This review will focus on recent developments in transition-metal catalyzed chelation assisted concomitant C-H activation and ring scission of strained rings to attain molecular complexity.

Milling in Seconds Accelerates Acetylation of Cellulose in Hours.

A new sustainable synthetic method for cellulose acetate was developed by a combination of I2-catalyzed solid–liquid acetylation of cellulose and a milling process reducing the crystallinity of cellulose within a few seconds. Milled low-crystalline cellulose was acetylated faster than the original cellulose with higher crystallinity. The plausible factors of acceleration were the conversion of the hydroxy group in hydrogen bonds into reactive ones and the efficient formation of the catalytic species I+ by the enhanced formation of I3– assisted by the amorphous domain of the milled cellulose, while the morphological and structural changes were ignorable.

Relationships between personality traits and the physiological stress response in a wild mammal.

Glucocorticoids (GCs) are involved in the regulation of an animal’s energetic state. Under stressful situations, they are part of the neuroendocrine response to cope with environmental challenges. Animals react to aversive stimuli also through behavioral responses, defined as coping styles. Both in captive and wild populations, individuals differ in their behavior along a proactive–reactive continuum. Proactive animals exhibit a bold, active-explorative and social personality, whereas reactive ones are shy, less active-explorative and less social. Here, we test the hypothesis that personality traits and physiological responses to stressors covary, with more proactive individuals having a less pronounced GC stress response. In wild populations of invasive gray squirrels Sciurus carolinensis, we measured fecal glucocorticoid metabolites (FGMs), an integrated measure of circulating GCs, and 3 personality traits (activity, sociability, and exploration) derived from open field test (OFT) and mirror image stimulation (MIS) test. Gray squirrels had higher FGMs in Autumn than in Winter and males with scrotal testes had higher FGMs than nonbreeding males. Personality varied with body mass and population density. Squirrels expressed more activity-exploration at higher than at lower density and heavier squirrels had higher scores for activity-exploration than animals that weighed less. Variation in FGM concentrations was not correlated with the expression of the 3 personality traits. Hence, our results do not support a strong association between the behavioral and physiological stress responses but show that in wild populations, where animals experience varying environmental conditions, the GC endocrine response and the expression of personality are uncorrelated traits among individuals.

Reactivity of (Vicinal) Carbonyl Compounds with Urea.

Urea removal from dialysate is the major obstacle in realization of a miniature dialysis device, based on continuous dialysate regeneration in a closed loop, used for the treatment of patients suffering from end-stage kidney disease. For the development of a polymeric urea sorbent, capable of removing urea from dialysate with high binding capacities and fast reaction kinetics, a systematic kinetic study was performed on the reactivity of urea with a library of low-molecular-weight carbonyl compounds in phosphate-buffered saline (pH 7.4) at 323 K. It was found that dialdehydes do not react with urea under these conditions but need to be activated under acidic conditions and require aldehyde groups in close proximity to each other to allow a reaction with urea. Among the 31 (hydrated) carbonyl compounds tested, triformylmethane, ninhydrin, and phenylglyoxaldehyde were the most reactive ones with urea. This is attributed to the low dehydration energies of these compounds, as calculated by Gibbs free energy differences between the hydrated and dehydrated carbonyl compounds, which are favorable for the reaction with urea. Therefore, future urea sorbents should contain such functional groups at the highest possible density.

PB2049 DETECTION OF TREGS BY FLOW CYTOMETRY IN THE DIAGNOSIS OF HODGKIN LYMPHOMA

Background:Regulatory T (Tregs) cells constitute a subset of CD4+ lymphocytes that play a key role in the regulation of self‐tolerance and the maintenance of tissue homeostasis. It seems well established that in cancer patients, accumulation of Tregs both in tissue and peripheral blood (PB) is associated with the suppression of anti‐tumor immune effector functions, tumor progression and poor prognosis. Flow cytometry (FC) is an effective and rapid tool to quantify Tregs and to evaluate the immunological characteristics of the individual patient.Aims:We wanted to verify the usefulness of FC in quantifying Tregs in the diagnosis of the Hodgkin lymphoma (HL), where the contribution of the FC is limited, and to demonstrate if this subset T CD4+ could help to define the microenvironment of the HL characterized by a low number of malignant cells surrounded by an abundant reactive infiltrate of immune cells rich of T lymphocyte.Methods:We investigated Tregs in the involved lymph nodes (LN) of 15 HL patients and 15 patients with reactive lymph‐nodes. Peripheral presence of Tregs was analysed in PB obtained from the same patients and 15 age‐matched healthy donors (controls). Analyses were performed using FACSCanto flow cytometer (BD Biosciences) and FACSDiva software. The Tregs were calculated both as percentage of total CD4 T lymphocytes. Tregs were analyzed according to the commonly used Treg definitions FOXP3+ CD4highCD25high, characterized by low expression of CD127 (IL‐7 receptor) and negativity for CD45RA (to discriminate activate cells from naïve cells). To improve the specificity of the analysis, the gating strategy considered Tregs positive for CD39 (marker of homing to inflamed regions), positive for CD62L (L‐selectin) and negative for CD26. Differences were considered statistically significant at with p‐value of < 0.05. Statistical analysis was performed using PRISM‐Graph Pad software version 6.3.Results:The percentage of Tregs was significantly higher in biopsy of HL patients compared with reactive lymph nodes’ patients: median (3,400 ± 0,8800) vs (1,130 ± 0,1647) p = 0,0430. Instead no statistically significant differences were found comparing circulating Tregs values, between the HL patients group vs patients with reactive lymph‐nodes and vs healthy controls: median (0,2857 ± 0,05728) vs (0,192 ± 0,02215) vs (0,2500 ± 0,052) p = 0,3722. To identify potential differences in proportions of Tregs between patients with HL, reactive and healthy controls, we included detailed analysis of Treg immunophenotypes.Summary/Conclusion:: Up to now, Tregs were evaluated mostly in solid cancer, while studies evaluating the numbers of Tregs in patients with lymphomas are few and with controversial results in fact it may be associated with either negative or positive outcome. Our work was focused on patients with HL where we found an increased number of Tregs that seems to be context‐dependent. In fact in HL lymph nodes the number of Tregs were higher compared to reactive ones. Otherwise no statistical differences were found in percentages of Treg among circulating CD4+ lymphocytes in patients compared with the control group. So, detecting Tregs during diagnosis in LN can help to discriminate HL from reactive ones. Our data could suggest a routine application of the FC in the diagnosis of HL to characterize specifically the microenvironment. Moreover we highlight the need to request a confirmation in larger patient population to confirm our data in PB.image

A Bait-and-Switch Method for the Construction of Artificial Esterases for Substrate-Selective Hydrolysis.

Outcomes of chemical reactions are generally dominated by the intrinsic reactivities of reaction partners, but enzymes frequently override such constraints to transform less reactive molecules in the presence of more reactive ones. Despite the attractiveness of such catalysis, it is difficult to build synthetic catalysts with these features. Micellar imprinting is a powerful method to create template-complementary binding sites inside protein-sized water-soluble nanoparticles. When a photocleavable functional monomer was used to bind two phosphonate/phosphate templates as transition-state analogues, active sites with predetermined size and shape were formed inside doubly cross-linked micelles through molecular imprinting. Postmodification replaced the binding group with a catalytic pyridyl group, forming highly selective artificial esterases. The catalysts displayed enzyme-like kinetics and turnover numbers that were in the hundreds. The selectivity of the catalysts, derived from the substrate-complementary imprinted active sites, enabled transformation of less reactive esters in the presence of more reactive ones.

Spectrum defragmentation algorithms in elastic optical networks

Fragmentation in Elastic Optical Networks is an issue caused by isolated, non-aligned, and non-contiguous frequency slots that cannot be used to allocate new connection requests to the network, due to the optical layer restrictions imposed to the Routing and Spectrum Assignment (RSA) algorithms. To deal with this issue, several studies on Spectrum Defragmentation have already been presented. In this work we present an analysis of the different Defragmentation Algorithms in the literature, at the same time we compare the performance of those based on sequential approaches in terms of Blocking Probability, Entropy and Fragmentation Ratio. We also propose a Defragmentation Algorithm based on a Proactive-Reactive approach. Experimental results have shown the conditions under which a Proactive approach can outperform the Reactive ones, and when the Reactive approaches are a better option. Results also showed that our proposed Algorithm is a promissory solution to deal with the Fragmentation problem, because it outperforms the rest of the Sequential Defragmentation Algorithms considered in this study.

Influence of {111} nanofaceting on the dynamics of CO adsorption and oxidation over Au supported on CeO2 nanocubes: An operando DRIFT insight

Abstract CO adsorption and further reaction with O2 on two Au/CeO2 model systems have been investigated by operando diffuse reflectance infrared Fourier transform spectroscopy (DRIFT) in order to unveil the active sites for CO oxidation. One of the ceria supports was constituted by crystallites depicting a nanocube shape bounded mostly by {100} planes, whilst the second one was consisted of nanocubes whose {110} surfaces were reconstructed into {111}-nanofacets with a zig-zag shape. The deconvolution of the CO adsorption bands and a detailed analysis of the time-evolution of these bands were also carried out. These studies evidenced a fast adsorption of CO over Au° and then Auδ--CO bands appeared during exposure to CO, in parallel with the appearance of Ce3+ features. Such changes suggest that CO adsorption process starts on Au sites on the low coordinated sites of the surface of the Au nanoparticles and their transfer to the interface sites. By comparing the nanostructure of the two catalysts, the Auδ--CO species could be fruitfully related to CO adsorption on sites located at the Au||CeO2 perimeter. The sample containing gold nanoparticles dispersed over the {111}-nanofaceted CeO2 nanocubes, which retained a higher amount of gold nanoparticles, depicts higher contribution of Auδ−−CO bands than the other Au catalyst in the DRIFT spectra. The dynamic DRIFT study clearly revealed that the CO species adsorbed on Auδ- sites were the most reactive ones in both gold supported systems for CO oxidation. This explains much higher TOF values observed on the catalyst prepared on the surface reconstructed support. A detailed analysis on the reactivity was performed by modulation excitation spectroscopy (MES). The presence of peroxide surface species (O22-) in nanofaceted {111} could lead to higher catalytic activity than that of gold on the non-reconstructed catalyst.

Nickel-catalyzed remote and proximal Wacker-type oxidation

Wacker oxidation chemistry is widely applied to oxidation of olefins to carbonyls in the synthesis of pharmaceuticals, natural products, and commodity chemicals. However, in this chemistry efficient oxidation of internal olefins and highly selective oxidation of unbiased internal olefins without reliance upon suitable coordinating groups have remained significant challenges. Here we report a nickel-catalyzed remote Wacker-type oxidation where reactions occur at remote and less-reactive sp3 C–H sites in the presence of a priori more reactive ones through a chain-walking mechanism with excellent regio- and chemo- selectivity. This transformation has attractive features including the use of ambient air as the sole oxidant, naturally-abundant nickel as the catalyst, and polymethylhydrosiloxane as the hydride source at room temperature, allowing for effective oxidation of challenging olefins. Notably, this approach enables direct access to a broad array of complex, medicinally relevant molecules from structurally complex substrates and chemical feedstocks.

Idiopathic lobular panniculitis: clinical and morphological correlations

To study the morphological features of idiopathic lobular panniculitis (ILP) in accordance with the nature of the course and clinical forms of the disease. Biopsy specimens were studied in 62 patients with various clinical forms of ILP. Biopsy and surgical materials were investigated by light optical morphological methods. The results were statistically processed using a statistical analysis software Statistica Version 10 package for Windows ('StatSoft Inc.', USA). The differences were considered statistically significant at an error level of p<0.05. Methods, such as Pearson's c2 test (analysis of contingency tables), Student's t-test, Z-test for comparison of proportions, nonparametric tests, such as Mann-Whitney U-test, Kruskal-Wallis test, were used to assess the results. The nature of the morphological parameters of the disease corresponded to the course of ILP. The acute course of the disease was characterized by the predominance of liponecrosis and inflammation concurrent with productive-destructive vasculitis. In the chronic course, there was a preponderance of lymphohistiocytic infiltrate with gigantic macrophages (lipophages) and granuloma-like structures. The above morphological changes were characteristic of the phagocytic morphological stage of node formation. The fibroplastic stage of panniculitis was absent in this study. The morphological features of the disease were shown depending on the form of idiopathic lobular panniculitis, which may be of diagnostic value in the differential diagnosis of panniculitis. The pathologist must first of all pay attention to the preferential localization of pathological changes (in the SAT septa or slices), the presence or absence of vasculitis and the nature of the infiltrate. The skin in panniculitis is typically intact or has minimal changes following the pattern seen in reactive ones. Panniculitis shows an undulatory course, and therefore all signs of this disease are present in biopsy specimens; however, morphological signs of the acute inflammatory, lipophagic or fibroplastic stage of the disease predominate depending on the stage and activity of the process.

Temperament effects on performance and adaptability of Nellore young bulls to the feedlot environment

The aim of this study was to evaluate the effects of temperament on cattle performance and adaptability to the feedlot environment, when kept under three space allowances (6, 12 and 24 m2/animal). Temperament of 1,350 Nellore young bulls (pure and crossbred) were assessed by the flight speed (FS) test on days 0 (FS0), 35 (FS35) and 87 (FSfin) in the feedlot, and the differences between FSfin and FS0 (ΔFS) were calculated. Three classes of flight speed were defined (calm, intermediate and reactive) for FS0 (FSC0) and FSfin (FSCfin). Performance was assessed by recording body weights on days 0, 35 and 87 (BW0, BW35 and BWfin, respectively), average daily gains between days 0 and 35, and 0 and 87 (ADG0-35 and ADG0-fin, respectively), and hot carcass weight (HCW). Adrenal glands of a subset of 270 animals were collected to measure their weight (WEIGHT), and cortical (COA) and medullary (MEA) areas. Spearman's coefficients of correlation were estimated to assess the relationships between FS test results over time. General linear mixed model with Proc MIXED of SAS was used in all other analyses, and a repeated measures modelling was used for FS, except for ΔFS. For FS analysis the model included the fixed effects of space allowance, days in feedlot and 2-way interaction. For ΔFS analysis only space allowance was included. Growth performance and adrenal gland variables were analyzed considering the fixed effects of space allowance, flight speed classes (for FSC0 and FSCfin, separately) and 2-way interaction in the model. In all models, BW0 was fitted as a covariate. Means comparisons between FS classes were corrected by Tukey adjustment. Significant and positive correlations were found between all FS test values, which decreased over time in all feedlot space allowances (p < 0.01). Calm animals showed higher (p < 0.05) ADG0-35, BW35 and BWfin means than intermediate and reactive ones, and also produced heavier carcasses at the end of the finishing period (p < 0.05). A significant effect of the interaction between FSCfin and space allowance was found for ADG0-fin, showing that only when kept at 12m2 of space allowance, reactive animals had lower (p < 0.05) growth performance than calm ones. Reactive cattle (FSC0) had greater COA and heavier WEIGHT (p = 0.01, for both) than calm and intermediate ones. Based on our results, it can be concluded that calm animals show better performance in the feedlot, regardless of the space provided to them in the pen, given their greater adaptability to feedlot conditions.