The aim of this article is to present a description and analysis of the scientific production in Epidemiology of the Journal Ciência & Saúde Coletiva since its creation in 1996. The titles and abstracts of all articles published in three periods (1996 to 2002, 2011 and 2019) were read and those related to Epidemiology were analyzed. These publications were classified according to the thematic area, study design, sampling method and sample size, and place of origin of the first author. The percentage of epidemiological articles published in the journal jumped from 12.8% in the first period to 31.0% in 2011, and to 55.3% in 2019. The most studied topics were chronic non-communicable diseases (20.3%), nutritional epidemiology (12.2%) and evaluation of health systems, policies, programs and services (10.9%). Descriptive/cross-sectional studies, conducted among adults and from the Southeast region, predominated. The results indicate the need for greater participation of cohort studies, case-control and clinical trials in the scope of the journal's publications, in addition to articles that use more sophisticated statistical methods and well-defined theoretical models, which may contribute in a more relevant way to prevention and control of health problems.The area of Policy, Planning and Health Management (PPG) express the intersection between research, intervention and political action. The article analyzes the dynamics of knowledge production about PPG in the Journal Ciência & Saúde Coletiva (C&SC) from 1996 to 2019. The study articulates a bibliometric and qualitative approach to explore the profile of articles in three dimensions thematic, methodological and authorship/institutional partnerships. 1680 PPG manuscripts were identified, corresponding to 28.3% of the total publications. Thematic analysis showed a strong influence of the context and the implementation of Unified Health System (SUS). Qualitative empirical studies predominated, followed by quantitative and quanti-qualitative studies. The combination of methodological procedures was frequent, with bibliographic review and interviews being the most cited. The average number of authors per article and national institutional partnerships increased. As most articles were published in Portuguese, the challenge of internationalization persists.  https://www.selleckchem.com/products/Decitabine.html  The PPG area stands out in the Journal C&SC and in the production of scientific knowledge relevant to SUS.This paper aimed to analyze the contribution of Journal Ciência & Saúde Coletiva (C&SC) to the construction of the CH field, particularly in its relationships with the Health Policy, understood both as an academic discipline and as a scope of practice. We reviewed papers published between 1996 and 2019 in the C&SC. Titles and abstracts of the 397 documents on health policies were read to measure the magnitude and identify the main themes and theoretical-methodological approaches. Thirty-five documents were selected and read in full among the 142 revised ones to investigate the Journal's contribution to CH's construction. The analysis was based on Bourdieu's sociology. It revealed that C&SC was established as a space for the construction of CH in multiple dimensions, particularly concerning the reflexivity on the field. Specifically, concerning the Health Policy, despite the small percentage of documents on the issue (6.8%), it encompassed the different meanings of this subject for the field. The authors discuss the possible relationships between the characteristics identified and the historical process of incorporating this subject in the various areas of CH.This paper analyzes Journal Ciência & Saúde Coletiva's approach to the narrative field. The concept of "narrative field" is built on the relationships of three dimensions, namely, the cognitive (epistemic), the socio-political-pedagogical, and the applied. This is an analytical, quantitative, and qualitative research of authors, themes, theoretical and methodological approaches, concepts, and disciplines. The search on the SciELO database was developed in two stages 1. Context - Restricted to the health publications, research on 29/01/2019, with the Portuguese descriptor "narrativa" + "saúde" (without filter); 2. Bibliometric research - data collected in December 2019 using descriptor "narrative" + "ciência e saúde coletiva", period 2002-2019. No reference was found in the searched journal before 2002. In the analysis of the 43 texts, the keywords were grouped into narrative analyses, narrative reviews, narrative texts, biography, and translation. We conclude by affirming the relevance of the theme, despite the small number of works, and suggest scholars emphasize in future works the theoretical approaches of narrative work and demarcate their perspectives, as an approach or an object, or both.This text tells the story of the launching, development, and current status of the scientific Journal Ciência & Saúde Coletiva from the perspective of who was responsible for its creation, and aims to contribute to the construction of the memory of a national journal, its possibilities, and limitations. While it is a personal statement, the theoretical perspective of narrative is employed in its elaboration, which consists of the use of a singular sequence of events, mental states, events involving human beings as characters or authors, which can be real or imaginary without losing its power as history. Authors who work with studies of narratives and scientific construction processes are reference, and the context in which the story takes place is explained. The study shows the importance of having clear goals, persistent work, and interconnection of important social actors, institutional support, and national and international cooperation in the Journal's management. The role of individuals and organizations is highlighted. The paper concludes that the Journal endorses intellectual production, ensures intellectual property, legitimizes new themes, and defines the limits of what is publishable in Collective Health, in line with its primary principles.The presence of acidic compounds as naphthenic acids in crude oil causes several problems for the petroleum industry, including corrosion in both upstream and downstream production processes. Based on this scenario, the main objective of this work was to investigate the removal of the acidic compound from two Brazilian heavy oils by adsorption processes using six potential adsorbents powdered shale, activated carbon, bentonite, silica gel, powdered sandstone and powdered wood. These raw materials were previously characterized by conventional and surface analysis techniques, which show that they offer a good surface area and thermal stability. To evaluate the removal efficiency at the molecular level, the crude oil samples and the filtered oils were analyzed by negative electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry [ESI (-) FTICR MS]. The O2 class, which is related to the relatively high acidity of the samples, was the most abundant in both crude oil samples, moreover, this class was more retained by adsorbents.