Pub Date : 2022-03-20DOI: 10.48141/sbjchem.21scon.44_abstract_erthal.pdf
Luísa Canto Erthal, Guilherme Felipe Dutra Silva, Aline Trovão Queiroz
Childhood depression is a very prevalent mental health condition in today's society. Its debate began to become relevant in the 1960s and, although there is no doubt about its existence, the subject is still little discussed. This paper aims to demonstrate the relevance of the subject due to its high prevalence and underdiagnosis. A literature review on Childhood Depression in Brazil was carried out based on research in Pubmed, Scielo, and Google Scholar databases, between 1989 and 2020, in Portuguese and English, using the descriptors: “child depression”, “symptoms of depression” and “treatment of childhood depression” combined. Textbooks, data from Ministério da saúde, the World Health Organization (WHO), and key articles selected from citations in other articles were used to compose the paper. From the data analysis, twenty-two titles that are directly related to the current work were selected. In Brazil, girls and children between thirteen and fourteen years old are the most affected by the disease. The DSM does not differentiate it from adult depression, despite the atypical manifestations of its symptoms in children. Families still have great difficulty on identifying this disorder the biggest obstacle is understanding and accepting that behavioral changes can be part of a depressive condition. Normalizing the discussion of the topic is important so that there is more information about the disease and, consequently, more knowledge is disseminated both to the medical community and the families of affected children. This way, it will be possible to prevent its appearance and, when present, facilitate its detection, improving life quality of those involved and avoiding negative outcomes such as child suicide.
儿童抑郁症是当今社会非常普遍的心理健康状况。它的辩论在20世纪60年代开始变得相关，尽管它的存在是毫无疑问的，但这个主题仍然很少被讨论。本文的目的是证明相关性的主题，由于其高患病率和诊断不足。基于1989年至2020年间在Pubmed、Scielo和Google Scholar数据库中的研究，以葡萄牙语和英语对巴西儿童抑郁症进行了文献综述，使用了“儿童抑郁症”、“抑郁症症状”和“儿童抑郁症的治疗”这三个描述词。撰写该论文所用的材料包括教科书、来自ministerizio da saúde、世界卫生组织(世卫组织)的数据以及从其他文章中引用的关键文章。从数据分析中，选择了与当前工作直接相关的22个标题。在巴西，女孩和13至14岁的儿童最容易受到这种疾病的影响。DSM没有将其与成人抑郁症区分开来，尽管其症状在儿童中有非典型表现。家庭在识别这种疾病方面仍然有很大的困难，最大的障碍是理解和接受行为改变可能是抑郁症的一部分。使这一问题的讨论正常化是很重要的，这样就有更多关于这一疾病的信息，从而向医学界和受影响儿童的家庭传播更多的知识。这样，就有可能预防它的出现，当它出现时，促进检测，提高相关人员的生活质量，避免儿童自杀等负面结果。
{"title":"CHILD DEPRESSION IN BRAZIL - A LITERATURE REVIEW","authors":"Luísa Canto Erthal, Guilherme Felipe Dutra Silva, Aline Trovão Queiroz","doi":"10.48141/sbjchem.21scon.44_abstract_erthal.pdf","DOIUrl":"https://doi.org/10.48141/sbjchem.21scon.44_abstract_erthal.pdf","url":null,"abstract":"Childhood depression is a very prevalent mental health condition in today's society. Its debate began to become relevant in the 1960s and, although there is no doubt about its existence, the subject is still little discussed. This paper aims to demonstrate the relevance of the subject due to its high prevalence and underdiagnosis. A literature review on Childhood Depression in Brazil was carried out based on research in Pubmed, Scielo, and Google Scholar databases, between 1989 and 2020, in Portuguese and English, using the descriptors: “child depression”, “symptoms of depression” and “treatment of childhood depression” combined. Textbooks, data from Ministério da saúde, the World Health Organization (WHO), and key articles selected from citations in other articles were used to compose the paper. From the data analysis, twenty-two titles that are directly related to the current work were selected. In Brazil, girls and children between thirteen and fourteen years old are the most affected by the disease. The DSM does not differentiate it from adult depression, despite the atypical manifestations of its symptoms in children. Families still have great difficulty on identifying this disorder the biggest obstacle is understanding and accepting that behavioral changes can be part of a depressive condition. Normalizing the discussion of the topic is important so that there is more information about the disease and, consequently, more knowledge is disseminated both to the medical community and the families of affected children. This way, it will be possible to prevent its appearance and, when present, facilitate its detection, improving life quality of those involved and avoiding negative outcomes such as child suicide.","PeriodicalId":20606,"journal":{"name":"Proceedings of the SOUTHERN BRAZILIAN JOURNAL OF CHEMISTRY 2021 INTERNATIONAL VIRTUAL CONFERENCE","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89566907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-20DOI: 10.48141/sbjchem.21scon.45_abstract_tavares.pdf
Lívia Hygino Tavares, B. Moura
Gestational diabetes mellitus (MGD) is associated with poor cardiac malformation in the fetus. It is related to changes in the clinical course of the disease and pre-gestational periods. The prevalence and incidence of MGD have been increasing worldwide. Early screening, diagnosis, and lifestyle change, such as physical exercise and healthy eating, provide better outcomes for children's health. This study aims to analyze the data concerning gestational diabetes and fetal malformations and to group the various protocols for diagnosis, highlighting the risk factors associated with MGD and their prevention. A systematic review of the literature was conducted with the PubMed, Scielo, Medline databases with English, Portuguese, and Spanish articles. The studies gathered clinical trials, randomized clinical trials, and original articles. In 12 articles analyzed maternal alterations, while 11 articles analyzed fetal alterations, and 9 articles analyzed how to diagnose cardiac changes in the fetus. The patient with MGD should be inserted in multidisciplinary activities seeking the change of lifestyle, physical exercises, and food reeducation, intending to give the fetus the appropriate nutrients and optimize the drug treatment; cardiac malformations are among the most severe and recurrent complications. However, they can be avoided with the control of pre-gestational diabetes (stricter follow-up from the moment the patient feels the desire to become pregnant) and the diagnosis and treatment of early gestational diabetes, as strict control of maternal blood glucose during pregnancy reduces morbidities and mortality. The study showed that hyperglycemic status during pregnancy is related to increased mortality and morbidity, even if it is asymptomatic. Therefore, it is necessary to guide the diabetic woman to plan her pregnancy in a euglycemic period because only this control can guarantee health to the fetus. The diagnosis of pregnant women with gestational diabetes needs to be early to optimize treatment.
{"title":"DIABETES IN PREGNANCY AND FETAL CARDIAC RISK: LITERATURE REVIEW","authors":"Lívia Hygino Tavares, B. Moura","doi":"10.48141/sbjchem.21scon.45_abstract_tavares.pdf","DOIUrl":"https://doi.org/10.48141/sbjchem.21scon.45_abstract_tavares.pdf","url":null,"abstract":"Gestational diabetes mellitus (MGD) is associated with poor cardiac malformation in the fetus. It is related to changes in the clinical course of the disease and pre-gestational periods. The prevalence and incidence of MGD have been increasing worldwide. Early screening, diagnosis, and lifestyle change, such as physical exercise and healthy eating, provide better outcomes for children's health. This study aims to analyze the data concerning gestational diabetes and fetal malformations and to group the various protocols for diagnosis, highlighting the risk factors associated with MGD and their prevention. A systematic review of the literature was conducted with the PubMed, Scielo, Medline databases with English, Portuguese, and Spanish articles. The studies gathered clinical trials, randomized clinical trials, and original articles. In 12 articles analyzed maternal alterations, while 11 articles analyzed fetal alterations, and 9 articles analyzed how to diagnose cardiac changes in the fetus. The patient with MGD should be inserted in multidisciplinary activities seeking the change of lifestyle, physical exercises, and food reeducation, intending to give the fetus the appropriate nutrients and optimize the drug treatment; cardiac malformations are among the most severe and recurrent complications. However, they can be avoided with the control of pre-gestational diabetes (stricter follow-up from the moment the patient feels the desire to become pregnant) and the diagnosis and treatment of early gestational diabetes, as strict control of maternal blood glucose during pregnancy reduces morbidities and mortality. The study showed that hyperglycemic status during pregnancy is related to increased mortality and morbidity, even if it is asymptomatic. Therefore, it is necessary to guide the diabetic woman to plan her pregnancy in a euglycemic period because only this control can guarantee health to the fetus. The diagnosis of pregnant women with gestational diabetes needs to be early to optimize treatment.","PeriodicalId":20606,"journal":{"name":"Proceedings of the SOUTHERN BRAZILIAN JOURNAL OF CHEMISTRY 2021 INTERNATIONAL VIRTUAL CONFERENCE","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82038216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-20DOI: 10.48141/sbjchem.21scon.20_abstract_ajiboye.pdf
A. T. Ajiboye, J. F. Opadiji, Adebimpe Ruth Ajayi
MQ-series gas sensors belong to the metal oxide semiconductor (MOS) family of sensors that can sense the presence of many gases. These sensors find their application in gas alarm systems as key components. While necessary sensor circuit output voltage value for alarm point in a standalone gas alarm system is desirable, but what exact combination of the sensor circuit parameters is required? Hitherto, the determination of these circuit parameters has not been much attention in the research community. This study explores a structured graphical approach of determining MQ series gas sensor circuit parameters for a standalone gas alarm system that yields the desired sensor circuit output voltage value for the alarm point. Model equations were developed for the sensor dynamics, and based on these model equations, graphs for the determination of required sensor parameters were plotted for a case of MQ-4 gas sensor response to liquefied petroleum gas (LPG). A structured graphical approach for determining MQ-series gas sensor circuit parameters for alarm points in a standalone gas alarm system showed that using MQ-4 gas sensor and LPG as the target gas. For a sensor circuit output voltage of 2 V for alarm point at 1000 ppm of LPG, the corresponding value of RO, RS, and RL obtained were 20 kΩ, 30 kΩ, and 20 kΩ, respectively. Hence, the developed structured graphical approach is suitable for determining MQ series gas sensor circuit parameters for a standalone gas alarm system under the influence of its associated gases.
{"title":"GRAPHICAL METHOD FOR DETERMINATION OF MQ-SERIES GAS SENSOR CIRCUIT PARAMETERS FOR A STANDALONE GAS ALARM SYSTEM","authors":"A. T. Ajiboye, J. F. Opadiji, Adebimpe Ruth Ajayi","doi":"10.48141/sbjchem.21scon.20_abstract_ajiboye.pdf","DOIUrl":"https://doi.org/10.48141/sbjchem.21scon.20_abstract_ajiboye.pdf","url":null,"abstract":"MQ-series gas sensors belong to the metal oxide semiconductor (MOS) family of sensors that can sense the presence of many gases. These sensors find their application in gas alarm systems as key components. While necessary sensor circuit output voltage value for alarm point in a standalone gas alarm system is desirable, but what exact combination of the sensor circuit parameters is required? Hitherto, the determination of these circuit parameters has not been much attention in the research community. This study explores a structured graphical approach of determining MQ series gas sensor circuit parameters for a standalone gas alarm system that yields the desired sensor circuit output voltage value for the alarm point. Model equations were developed for the sensor dynamics, and based on these model equations, graphs for the determination of required sensor parameters were plotted for a case of MQ-4 gas sensor response to liquefied petroleum gas (LPG). A structured graphical approach for determining MQ-series gas sensor circuit parameters for alarm points in a standalone gas alarm system showed that using MQ-4 gas sensor and LPG as the target gas. For a sensor circuit output voltage of 2 V for alarm point at 1000 ppm of LPG, the corresponding value of RO, RS, and RL obtained were 20 kΩ, 30 kΩ, and 20 kΩ, respectively. Hence, the developed structured graphical approach is suitable for determining MQ series gas sensor circuit parameters for a standalone gas alarm system under the influence of its associated gases.","PeriodicalId":20606,"journal":{"name":"Proceedings of the SOUTHERN BRAZILIAN JOURNAL OF CHEMISTRY 2021 INTERNATIONAL VIRTUAL CONFERENCE","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83210489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-20DOI: 10.48141/sbjchem.21scon.19_abstract_souza.pdf
Andreza Rozendo Souza, M. A. Santos, Aline Trovão Queiroz
Documenting the cause of death is important to know the health situation of the population. After the beginning of the pandemic caused by the new coronavirus, institutional protocols were created to minimize the spread of the virus, including changes in the handling of bodies. The main objective of this study was to identify whether there was a change in the number of deaths from unknown to ill-defined causes comparing two years before the pandemic and two years during the pandemic in Brazil and the state of Rio de Janeiro and to determine the main epidemiological characteristics. A documentary, retrospective, and historical study were carried out based on data collection in the mortality information system from 2018 to 2021. The period was divided into two phases to make comparisons, two years before and two during the pandemic. Mortality rate, sex, color, and age data were included. Before the pandemic, there was a lower mortality rate from an ill-defined or unknown cause in Brazil and the State of Rio de Janeiro. In addition to the problems faced before, the changes caused by the pandemic may have influenced the rise in death notifications from this cause. The age group most affected in the two biennia analyzed was over 80. During the pandemic, men were more affected than women, browns in Brazil and whites in Rio de Janeiro had the highest number of notifications. In general, during the pandemic, it was shown that there was an increase in the number of people who died from unknown or poorly defined causes, especially the elderly. Additional studies need to be performed for definitive elucidation. In addition, it is necessary to identify better the conditions that caused the increase in the number of deaths from unknown or poorly defined causes.
{"title":"COMPARATIVE STUDY OF DEATHS FROM ILL-DEFINED AND UNKNOWN CAUSES BEFORE AND DURING THE SARSCOV-2 PANDEMIC","authors":"Andreza Rozendo Souza, M. A. Santos, Aline Trovão Queiroz","doi":"10.48141/sbjchem.21scon.19_abstract_souza.pdf","DOIUrl":"https://doi.org/10.48141/sbjchem.21scon.19_abstract_souza.pdf","url":null,"abstract":"Documenting the cause of death is important to know the health situation of the population. After the beginning of the pandemic caused by the new coronavirus, institutional protocols were created to minimize the spread of the virus, including changes in the handling of bodies. The main objective of this study was to identify whether there was a change in the number of deaths from unknown to ill-defined causes comparing two years before the pandemic and two years during the pandemic in Brazil and the state of Rio de Janeiro and to determine the main epidemiological characteristics. A documentary, retrospective, and historical study were carried out based on data collection in the mortality information system from 2018 to 2021. The period was divided into two phases to make comparisons, two years before and two during the pandemic. Mortality rate, sex, color, and age data were included. Before the pandemic, there was a lower mortality rate from an ill-defined or unknown cause in Brazil and the State of Rio de Janeiro. In addition to the problems faced before, the changes caused by the pandemic may have influenced the rise in death notifications from this cause. The age group most affected in the two biennia analyzed was over 80. During the pandemic, men were more affected than women, browns in Brazil and whites in Rio de Janeiro had the highest number of notifications. In general, during the pandemic, it was shown that there was an increase in the number of people who died from unknown or poorly defined causes, especially the elderly. Additional studies need to be performed for definitive elucidation. In addition, it is necessary to identify better the conditions that caused the increase in the number of deaths from unknown or poorly defined causes.","PeriodicalId":20606,"journal":{"name":"Proceedings of the SOUTHERN BRAZILIAN JOURNAL OF CHEMISTRY 2021 INTERNATIONAL VIRTUAL CONFERENCE","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90217746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-20DOI: 10.48141/sbjchem.21scon.10_abstract_ajala.pdf
M. Ajala, A. Abdulkareem, A. Kovo, J. Tijani, Ayomide Samuel Adeyemi
Clay-supported silver nanoparticles were green synthesized using the aqueous leaf extract of Parkia biglobosa. The phytochemical analysis and FTIR results of the Parkia biglobosa showed that the leaf contains phenol, tanning, and flavonoids, which act as reducing, capping, and stabilizing agents required for the synthesis of the silver nanoparticles. The prepared adsorbent has good morphology, is rich in silica, and contains functional groups suitable for heavy metal binding. The adsorptions of Zn, Cu, and Pb from pharmaceutical wastewater onto the silver-modified clay were studied as an adsorbent dosage and contact time. From the percentage removal results obtained, the adsorbent had up to 99.96%, 99.5%, and 99.44% removal efficiency for Zn, Pb, and Cu, respectively. The present work shows that the synthesized silver nanoparticles supported on local clay can be used as a potentially low-cost adsorbent to remove heavy metal ions from industrial wastewater.
{"title":"ADSORPTION STUDIES OF ZINC, COPPER, AND LEAD IONS FROM PHARMACEUTICAL WASTEWATER ONTO SILVER MODIFIED CLAY ADSORBENT","authors":"M. Ajala, A. Abdulkareem, A. Kovo, J. Tijani, Ayomide Samuel Adeyemi","doi":"10.48141/sbjchem.21scon.10_abstract_ajala.pdf","DOIUrl":"https://doi.org/10.48141/sbjchem.21scon.10_abstract_ajala.pdf","url":null,"abstract":"Clay-supported silver nanoparticles were green synthesized using the aqueous leaf extract of Parkia biglobosa. The phytochemical analysis and FTIR results of the Parkia biglobosa showed that the leaf contains phenol, tanning, and flavonoids, which act as reducing, capping, and stabilizing agents required for the synthesis of the silver nanoparticles. The prepared adsorbent has good morphology, is rich in silica, and contains functional groups suitable for heavy metal binding. The adsorptions of Zn, Cu, and Pb from pharmaceutical wastewater onto the silver-modified clay were studied as an adsorbent dosage and contact time. From the percentage removal results obtained, the adsorbent had up to 99.96%, 99.5%, and 99.44% removal efficiency for Zn, Pb, and Cu, respectively. The present work shows that the synthesized silver nanoparticles supported on local clay can be used as a potentially low-cost adsorbent to remove heavy metal ions from industrial wastewater.","PeriodicalId":20606,"journal":{"name":"Proceedings of the SOUTHERN BRAZILIAN JOURNAL OF CHEMISTRY 2021 INTERNATIONAL VIRTUAL CONFERENCE","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76585901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-20DOI: 10.48141/sbjchem.21scon.38_abstract_silva.pdf
Andrei Marcelino Sá Pires Silva, E. Almeida, J. Menezes
Lapachol belongs to the group of 1,4-naphthoquinones, with the addition of a hydroxide group attached to carbon 2 and a branched alkene nomenclature 3-methyl-2-butenyl attached to carbon 3, with final nomenclature 2-hydroxy-3 -(3-methyl-2-butenyl)-1,4-naphthoquinone. As a chromophore, it exhibits near-ultraviolet absorption, one of the important characteristics in the process of choosing ligands to integrate photoluminescent lanthanide complexes. Photoluminescent materials are currently widely used in the market for making plates, paints, plates, tapes, pigments, and other luminescent equipment. The use of what are called DMCLs (Molecular Light Converting Devices) is increasing in Photovoltaic Cells, Optical Luminescent Tracers, Forensic Chemistry, Fluoroimmunoassays, and more. Knowing the great demand for these devices, it is feasible to study and characterize new compounds that have favorable emission characteristics and that allow their use in the aforementioned categories. For this, the use of lanthanides is a great proposal, and the application of a chromophore ligand, such as Lapachol, aims to provide an increase in the emission of the final product. In the present work, the extraction, a new purification process of Lapachol from its natural source, the Ipê Roxo wood, is reported, as well as the characterizations that attest to the feasibility of the new process, in addition to the use of the material as a binder in lanthanide complexes.
{"title":"EXTRACTION, PURIFICATION, AND COMBINATION OF LAPACHOL IN NOVEL EUROPIUM COMPLEX","authors":"Andrei Marcelino Sá Pires Silva, E. Almeida, J. Menezes","doi":"10.48141/sbjchem.21scon.38_abstract_silva.pdf","DOIUrl":"https://doi.org/10.48141/sbjchem.21scon.38_abstract_silva.pdf","url":null,"abstract":"Lapachol belongs to the group of 1,4-naphthoquinones, with the addition of a hydroxide group attached to carbon 2 and a branched alkene nomenclature 3-methyl-2-butenyl attached to carbon 3, with final nomenclature 2-hydroxy-3 -(3-methyl-2-butenyl)-1,4-naphthoquinone. As a chromophore, it exhibits near-ultraviolet absorption, one of the important characteristics in the process of choosing ligands to integrate photoluminescent lanthanide complexes. Photoluminescent materials are currently widely used in the market for making plates, paints, plates, tapes, pigments, and other luminescent equipment. The use of what are called DMCLs (Molecular Light Converting Devices) is increasing in Photovoltaic Cells, Optical Luminescent Tracers, Forensic Chemistry, Fluoroimmunoassays, and more. Knowing the great demand for these devices, it is feasible to study and characterize new compounds that have favorable emission characteristics and that allow their use in the aforementioned categories. For this, the use of lanthanides is a great proposal, and the application of a chromophore ligand, such as Lapachol, aims to provide an increase in the emission of the final product. In the present work, the extraction, a new purification process of Lapachol from its natural source, the Ipê Roxo wood, is reported, as well as the characterizations that attest to the feasibility of the new process, in addition to the use of the material as a binder in lanthanide complexes.","PeriodicalId":20606,"journal":{"name":"Proceedings of the SOUTHERN BRAZILIAN JOURNAL OF CHEMISTRY 2021 INTERNATIONAL VIRTUAL CONFERENCE","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80754508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-20DOI: 10.48141/sbjchem.21scon.40_abstract_engel.pdf
W. Engel, R. F. Gennari, Caue Ferreira, M. Rizzutto
Ivory was commonly used in the manufacture of numerous objects. It refers to the tusk and teeth of animals. Almost all ivory pieces, in the past, found on the market were authentic; however, nowadays, ivory extraction is an illegal practice. Thus, official government and animal protection entities have been fighting intensely against this criminal practice, but the production and sale continue. There are numerous difficulties in identifying the illegal extraction and use of ivory, and the correct characterization is certainly a significant challenge. A proper ivory characterization is an important tool in the fight against ivory extraction once it is possible to trace the piece to the animal and sometimes even to its origin. It is also useful for museums and art collectors to verify the authenticity of the piece. Ivory, also known as the inorganic gemstone, is composed of calcium phosphate, collagen, elastin, and lipids. Different tests can differentiate ivory from bones or celluloid; however, some can damage the piece. Because of that, analytical techniques are preferred. However, the method to be used must have the capability of differencing small differences once the chemical elements present in ivory, bone, or even celluloid are the same. In this work, three analytical methodologies were used to check the possibility of having an alternative test applied on supposed ivory samples. All three methods used, X-Ray Fluorescence (XRF) and vibrational spectrometry techniques (FT-IR and Raman), are portable equipment to facilitate the analysis in situ. FT-IR and Raman spectra obtained had shown differences between bone and ivory samples, indicating the art collector samples are probably ivory. These differences allied with the portability of the analysis can be used as an additional test to be done in ivory and bone-based materials.
{"title":"IVORY CHARACTERIZATION USING PORTABLE VIBRATIONAL SPECTROMETRY","authors":"W. Engel, R. F. Gennari, Caue Ferreira, M. Rizzutto","doi":"10.48141/sbjchem.21scon.40_abstract_engel.pdf","DOIUrl":"https://doi.org/10.48141/sbjchem.21scon.40_abstract_engel.pdf","url":null,"abstract":"Ivory was commonly used in the manufacture of numerous objects. It refers to the tusk and teeth of animals. Almost all ivory pieces, in the past, found on the market were authentic; however, nowadays, ivory extraction is an illegal practice. Thus, official government and animal protection entities have been fighting intensely against this criminal practice, but the production and sale continue. There are numerous difficulties in identifying the illegal extraction and use of ivory, and the correct characterization is certainly a significant challenge. A proper ivory characterization is an important tool in the fight against ivory extraction once it is possible to trace the piece to the animal and sometimes even to its origin. It is also useful for museums and art collectors to verify the authenticity of the piece. Ivory, also known as the inorganic gemstone, is composed of calcium phosphate, collagen, elastin, and lipids. Different tests can differentiate ivory from bones or celluloid; however, some can damage the piece. Because of that, analytical techniques are preferred. However, the method to be used must have the capability of differencing small differences once the chemical elements present in ivory, bone, or even celluloid are the same. In this work, three analytical methodologies were used to check the possibility of having an alternative test applied on supposed ivory samples. All three methods used, X-Ray Fluorescence (XRF) and vibrational spectrometry techniques (FT-IR and Raman), are portable equipment to facilitate the analysis in situ. FT-IR and Raman spectra obtained had shown differences between bone and ivory samples, indicating the art collector samples are probably ivory. These differences allied with the portability of the analysis can be used as an additional test to be done in ivory and bone-based materials.","PeriodicalId":20606,"journal":{"name":"Proceedings of the SOUTHERN BRAZILIAN JOURNAL OF CHEMISTRY 2021 INTERNATIONAL VIRTUAL CONFERENCE","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82739402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-01DOI: 10.48141/sbjchem.21scon.05_abstract_sharba.pdf
I. Sharba, A. N. Al-dujaili
Aim of the study: To assess serum sclerostin in female patients with beta-thalassemia and compare with the healthy controls and to predict its complication associated with the bone pathophysiology, for designed improvement the lifestyle goodliness for these patients. Material and methods: Sixty-nine female beta-thalassemia (βT) patients (54 βT major and 15 βT Intermedia), aged 8-40 years who dependent on transfused blood, and 20 healthy controls were evaluated serum sclerostin, and was examined the relationship with hematological parameters RBC, Hb, PCV, WBC, PLT, BMI, splenic status, iron, and ferritin levels. The information of beta-thalassemia patients was collected and recorded by the questioner. Results: A significantly increased serum sclerostin level (mean 26.80±0.91) pg/ml was shown in βT patients compared with the healthy controls (10.03±0.68, p < 0.001) pg/ml. Furthermore, a significant decrease (p<0.05) of the sclerostin level was observed in β-thalassemia major compared to intermedia β-thalassemia patients. Serum sclerostin level revealed a significant increase in progress age; it is highest in the age group (30-40) year as compared with age group (8-18) and (19-29) year respectively. Sclerostin showed no associations with the RBC, Hb, PCV, and significantly positively correlated (p<0.05) with serum iron, ferritin levels, WBC, and PLT count. Significantly higher sclerostin levels in splenectomized and underweight groups were observed compared to unsplenectomized and normal-weight groups (p<0.05) of βT patients. Conclusion: Sclerostin plays an important role in beta-thalassemia patients and can serve as a biomarker associated with the bone pathophysiology and indicator to prevent the continuation of such serious diseases caused by iron overload in these patients.
{"title":"ASSESSMENT OF SERUM SCLEROSTIN LEVEL AS A BIOMARKER ASSOCIATED WITH BONE DISORDERS IN Β-THALASSEMIA PATIENTS IN AL- NAJAF CITY, IRAQ","authors":"I. Sharba, A. N. Al-dujaili","doi":"10.48141/sbjchem.21scon.05_abstract_sharba.pdf","DOIUrl":"https://doi.org/10.48141/sbjchem.21scon.05_abstract_sharba.pdf","url":null,"abstract":"Aim of the study: To assess serum sclerostin in female patients with beta-thalassemia and compare with the healthy controls and to predict its complication associated with the bone pathophysiology, for designed improvement the lifestyle goodliness for these patients. Material and methods: Sixty-nine female beta-thalassemia (βT) patients (54 βT major and 15 βT Intermedia), aged 8-40 years who dependent on transfused blood, and 20 healthy controls were evaluated serum sclerostin, and was examined the relationship with hematological parameters RBC, Hb, PCV, WBC, PLT, BMI, splenic status, iron, and ferritin levels. The information of beta-thalassemia patients was collected and recorded by the questioner. Results: A significantly increased serum sclerostin level (mean 26.80±0.91) pg/ml was shown in βT patients compared with the healthy controls (10.03±0.68, p < 0.001) pg/ml. Furthermore, a significant decrease (p<0.05) of the sclerostin level was observed in β-thalassemia major compared to intermedia β-thalassemia patients. Serum sclerostin level revealed a significant increase in progress age; it is highest in the age group (30-40) year as compared with age group (8-18) and (19-29) year respectively. Sclerostin showed no associations with the RBC, Hb, PCV, and significantly positively correlated (p<0.05) with serum iron, ferritin levels, WBC, and PLT count. Significantly higher sclerostin levels in splenectomized and underweight groups were observed compared to unsplenectomized and normal-weight groups (p<0.05) of βT patients. Conclusion: Sclerostin plays an important role in beta-thalassemia patients and can serve as a biomarker associated with the bone pathophysiology and indicator to prevent the continuation of such serious diseases caused by iron overload in these patients.","PeriodicalId":20606,"journal":{"name":"Proceedings of the SOUTHERN BRAZILIAN JOURNAL OF CHEMISTRY 2021 INTERNATIONAL VIRTUAL CONFERENCE","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87835240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-01DOI: 10.48141/sbjchem.21scon.06_abstract_ishida.pdf
L. Dall’Agnol, Alice Medeiros de Souza, Lilian Campos Amadeu, Eleni Vosniadou, F. I. Corrêa
Parkinson’s disease (PD) is a central nervous system neurodegenerative disorder that primarily affects the motor system, decreasing motor coordination, balance and generating tremors, and a progressive loss of everyday mobility, including walking. This study was conducted to verify the effects of Transcranial Direct Current Stimulation (tDCS) on balance, motor control, and the quality of life in Parkinson’s disease patients. The patient received three treatments consisting of 10 sessions of 20 minutes each and a one-week interval between treatments. Active stimulation was applied on the primary motor cortex (M1), the dorsolateral prefrontal cortex (DLPFC), and the dorsolateral prefrontal cortex (D Sham-tDCS. DLPFC stimulation produced the best improvements in terms of motor control, balance, gait, and overall PD symptoms, as evaluated by different scales and questionnaires. As a result, active stimulation of the DLPFC produced superior outcomes and may contribute to treating Parkinson’s disease.
{"title":"TRANSCRANIAL DIRECT STIMULATION IN THE NEUROMODULATION OF CONTROLLING MAIN SYMPTOMS OF PARKINSON’S DISEASE: A CASE STUDY","authors":"L. Dall’Agnol, Alice Medeiros de Souza, Lilian Campos Amadeu, Eleni Vosniadou, F. I. Corrêa","doi":"10.48141/sbjchem.21scon.06_abstract_ishida.pdf","DOIUrl":"https://doi.org/10.48141/sbjchem.21scon.06_abstract_ishida.pdf","url":null,"abstract":"Parkinson’s disease (PD) is a central nervous system neurodegenerative disorder that primarily affects the motor system, decreasing motor coordination, balance and generating tremors, and a progressive loss of everyday mobility, including walking. This study was conducted to verify the effects of Transcranial Direct Current Stimulation (tDCS) on balance, motor control, and the quality of life in Parkinson’s disease patients. The patient received three treatments consisting of 10 sessions of 20 minutes each and a one-week interval between treatments. Active stimulation was applied on the primary motor cortex (M1), the dorsolateral prefrontal cortex (DLPFC), and the dorsolateral prefrontal cortex (D Sham-tDCS. DLPFC stimulation produced the best improvements in terms of motor control, balance, gait, and overall PD symptoms, as evaluated by different scales and questionnaires. As a result, active stimulation of the DLPFC produced superior outcomes and may contribute to treating Parkinson’s disease.","PeriodicalId":20606,"journal":{"name":"Proceedings of the SOUTHERN BRAZILIAN JOURNAL OF CHEMISTRY 2021 INTERNATIONAL VIRTUAL CONFERENCE","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78115716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-12DOI: 10.48141/sbjchem.21scon.03_abstract_pessutto.pdf
Ana Carla Pessutto, Eliena Jonko
Aluminum stands out for being a light, corrosion-resistant, and recyclable metal, achieving wide coverage in the market. When incorporated into alloying elements, it is possible to acquire other desirable characteristics. Alloy 6063, intended for architectural purposes, has aesthetic, structural, and strength functions. This study aims to compare two different staining methods on the surface of anodized profiles of aluminum alloy 6063. Anodized finishing is performed through an electrolytic process using sulfuric acid as an electrolyte to change the surface layer of the material, ensuring a more resistant aluminum oxide film than that formed naturally. For decorative purposes, the anodic film coloration can be performed by several methodologies, including, in this case, the coloration by organic adsorption, with the use of aniline, and the electrolytic coloration, composed of tin sulfate salts, both for obtaining the black color. To compare, neutral saline mist tests, scanning electron microscopy analysis, determination of the anodic layer thickness, and immersion tests with 3.5 percent sodium chloride for 1000 hours. The results obtained highlight that both were shown to be resistant to corrosion due to the fact that they do not present corrosion points when exposed to the neutral saline mist test for 600 hours. In the immersion tests, both remained resistant to sodium chloride. Because both methodologies present satisfactory results in all tests, the quality of the applied stains is ensured, and it is found that they are equivalent when the parameters discussed are used.
{"title":"COMPARISON OF TWO STAINING METHODS FOR ANODIZING IN ALLOY 6063 ALUMINUM PROFILES","authors":"Ana Carla Pessutto, Eliena Jonko","doi":"10.48141/sbjchem.21scon.03_abstract_pessutto.pdf","DOIUrl":"https://doi.org/10.48141/sbjchem.21scon.03_abstract_pessutto.pdf","url":null,"abstract":"Aluminum stands out for being a light, corrosion-resistant, and recyclable metal, achieving wide coverage in the market. When incorporated into alloying elements, it is possible to acquire other desirable characteristics. Alloy 6063, intended for architectural purposes, has aesthetic, structural, and strength functions. This study aims to compare two different staining methods on the surface of anodized profiles of aluminum alloy 6063. Anodized finishing is performed through an electrolytic process using sulfuric acid as an electrolyte to change the surface layer of the material, ensuring a more resistant aluminum oxide film than that formed naturally. For decorative purposes, the anodic film coloration can be performed by several methodologies, including, in this case, the coloration by organic adsorption, with the use of aniline, and the electrolytic coloration, composed of tin sulfate salts, both for obtaining the black color. To compare, neutral saline mist tests, scanning electron microscopy analysis, determination of the anodic layer thickness, and immersion tests with 3.5 percent sodium chloride for 1000 hours. The results obtained highlight that both were shown to be resistant to corrosion due to the fact that they do not present corrosion points when exposed to the neutral saline mist test for 600 hours. In the immersion tests, both remained resistant to sodium chloride. Because both methodologies present satisfactory results in all tests, the quality of the applied stains is ensured, and it is found that they are equivalent when the parameters discussed are used.","PeriodicalId":20606,"journal":{"name":"Proceedings of the SOUTHERN BRAZILIAN JOURNAL OF CHEMISTRY 2021 INTERNATIONAL VIRTUAL CONFERENCE","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74896838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：