Cystic fibrosis(CF)causes chronic infections in the respiratory tract and alters the digestive tract.This paper reviews the most important aspects of drug treatment and changes in the digestive tract of patients with ...Cystic fibrosis(CF)causes chronic infections in the respiratory tract and alters the digestive tract.This paper reviews the most important aspects of drug treatment and changes in the digestive tract of patients with CF.This is a review of the literature,emphasizing the discoveries made within the last 15 years by analyzing scientific papers published in journals indexed in the Scientific Electronic Library Online,Sciences Information,United States National Library of Medicine and Medical Literature Analysis and Retrieval System Online databases,both in English and Portuguese,using the key words:cystic fibrosis,medication,therapeutic,absorption,digestion.Randomized,observational,experimental,and epidemiological clinical studies were selected,among others,with statistical significance of 5%.This review evaluates the changes found in the digestive tract of CF patients including pancreatic insufficiency,constipation and liver diseases.Changes in nutritional status are also described.Clinical treatment,nutritional supplementation and drug management were classified in this review as essential to the quality of life of CF patients,and became available through public policies for monitoring and treating CF.The information gathered on CF and a multi professional approach to the disease is essential in the treatment of these patients.展开更多
Background:Biochemical and hematological parameters are important tools for assessing the physiological profile of vital organs,and can be recorded to create reference values used for clinical diagnosis of diseases.Ma...Background:Biochemical and hematological parameters are important tools for assessing the physiological profile of vital organs,and can be recorded to create reference values used for clinical diagnosis of diseases.Many research laboratories lack the means to establish their own set of reference parameters for use in their research,and while there are articles in the literature that discuss laboratory parameters for healthy BALB/c mice,few studies address the evaluation of these parameters in pathological situations,such as in mice inoculated with Ehrlich tumor.Method:BALB/c-FMABC mice previously inoculated with Ehrlich tumor were maintained under appropriate conditions.Blood samples were taken for analysis of hematological parameters using automated and semi-automated equipment to create a set of the animal welfare parameters for evaluation.Result:Results were obtained for all the hematological parameters for all groups analyzed.These showed:statistically significant differences between the initial and final tumor weight;comparable initial tumour volume and weight;an increase in leukocytes in the 7-day group with a characteristic predominance of lymphocytes and neutrophils;statistically significant changes in RDW in the 21-day group and in the welfare parameters in the 28-day group.Conclusion:The study successfully defined and established reference values for hematological and welfare parameters for all groups analyzed.展开更多
Objective: To determine the occurrence of oral manifestations, gingival index, dental state and associated therapeutic aspects in patients with vesiculobullous diseases. Study design: Prospective and observational stu...Objective: To determine the occurrence of oral manifestations, gingival index, dental state and associated therapeutic aspects in patients with vesiculobullous diseases. Study design: Prospective and observational study conducted with 69 patients from May 2013 to May 2014 at the Dermatology Outpatient Clinic of the Clinical Hospital, University of São Paulo Medical School, Brazil. Data were analyzed for frequency in absolute values, percentage and correlation using the Chi-square test. Results: 84.1% of the patients had oral manifestations of vesiculobullous diseases (p = 0.001);25% had gingival lesions;18.2% had lesions in the buccal mucosa, and 17.6% in the lips, with no correlation between the location and the type of disease (p = 0.990). Among all patients with bullous pemphigoid, linear IgA dermatosis, and mucous membrane pemphigoid, 59 (93.6%) patients had gingival inflammation of dental origin but without significant correlation (p = 0.42). There was correlation between pemphigus vulgaris and periodontal disease (p = 0.05). Conclusion: Gingival inflammation seems to interfere negatively with the clinical course of these diseases. Further studies should be conducted to better clarify the interrelations between dental and gingival state, and between vesiculobullous diseases and oral involvement.展开更多
This study investigated the influence of different titanium surfaces on the differentiation of rat osteoblast-like cells (osteo-1). Osteo-1 cells were cultured on the following titanium surfaces: 1) pretreated, smooth...This study investigated the influence of different titanium surfaces on the differentiation of rat osteoblast-like cells (osteo-1). Osteo-1 cells were cultured on the following titanium surfaces: 1) pretreated, smooth surface (PT);2) sandblasted and acid etched surface (SLA);and 3) sandblasted and acid-etched surface rinsed under nitrogen protection to prevent exposure to air and preserved in isotonic saline solution (modSLA). Cell metabolism, total protein content, collagen content and alkaline phosphatase (AP) activity and the formation of calcified nodules were analyzed. The titanium surface did not influence cell metabolism, total protein content and collagen content. The SLA surface influenced cell differentiation, with the observation of a significant reduction of AP activity and formation of calcified nodules after 21 days compared to the PT surface. No difference was observed between the PT and modSLA surfaces. All titanium surfaces tested permitted the full expression of the osteoblast phenotype by osteo-1 cells, including matrix mineralization.展开更多
In this study,the sperm ultrastructure of three species of Idarnes genus was investigated using light and transmission electron microscopy.Spermatozoon morphology of the three species was similar to that of most Chalc...In this study,the sperm ultrastructure of three species of Idarnes genus was investigated using light and transmission electron microscopy.Spermatozoon morphology of the three species was similar to that of most Chalcidoidea,with helicoidally twisted nucleus and flagellum.The head region consists of an acrosome and a nucleus;the nucleus-flagellum transition region characterized by the presence of mitochondrial derivatives and the centriolar adjunct;a flagellum region,which includes the axoneme with microtubular arrangement 9+9+2 and two mitochondrial derivatives.However,the sperm of these three species exhibit features that discriminate one species from each other:(1)only one species,Idarnes sp.2(carme group)exhibited an extracellular sheath surrounding the anterior portion of the nucleus,which extends to the anterior region of the flagellum,but it did not present filaments;(2)the acrosome in the three species was quite different,Idarnes sp.1 and Idarnes sp.2(carme group)has two compartments(acrosomal and subacrosomal vesicles)while Idarnes sp.3(flavicollis group)has a third compartment(perforatorium);(3)the centriolar adjunct elongated and its location among the mitochondrial derivatives is similar for the three species analyzed;(4)mitochondrial derivatives differ between the species,with triangular(Idarnes sp.1 and sp.3)and elongated or flat shaped(Idarnes sp.2)appearance.These data shows that sperm structure may differ within the same genus and confirms the potential of these cells in phylogenetic and taxonomic analyses in the Chalcidoidea superfamily,as well as in Hymenoptera in general.展开更多
Natural fibers have recently raised attention for presenting adequate mechanical characteristics for reinforcement of structural elements. The use of both natural fibers, in especial Sisal fibers, in wood laminated be...Natural fibers have recently raised attention for presenting adequate mechanical characteristics for reinforcement of structural elements. The use of both natural fibers, in especial Sisal fibers, in wood laminated beams and also wood from reforestation, is in accordance with the current economic interest and ecological appeal. Specifically, the strengthening of wood laminated beams with Sisal fibers is more effective for structures that require an increase in their structural capacity without a significant increase in height of the cross section. Furthermore, it is recommended that this type of reinforcement is used in wood structural elements where the elastic modulus is at least equal to the Sisal fibers. The composition of Sisal fibers is basically of cellulose, lignin and hemicelluloses. In particular, the amount of cellulose and the angle that the micro-fibers with the axis of the fiber characterize the failure strength and the modulus of elasticity. The average mechanical characteristics of the Sisal fiber are： tensile strength 347 to 378 （MPa） and elastic modulus 15.2 （GPa） whereas these properties are lower for strips of Sisal fibers. In this context, this paper deals with the analysis and the viability of the use of Sisal fibers in wood structures as a reinforced material.展开更多
This research analyzes the growth impacts promoted by C class in the process of the freezing of the Brazilian industry and increased imports. This emerging market, called class C, which is incorporated in part by the ...This research analyzes the growth impacts promoted by C class in the process of the freezing of the Brazilian industry and increased imports. This emerging market, called class C, which is incorporated in part by the low-income segment, presents distinct characteristics and needs and for this precise reason eventually burdens the short-term production of Brazilian companies, which feel the need to opt for the importation of basic commodities, manufactured, and semi-manufactured goods, in order to maintain a market share and return on their investments. Although this fact is actually part of a trend of global economic transformation, here it is due to a number of irregular actions taken by the Brazilian government facing a short-term political need. Stemming from quantitative researches and qualitative data, this paper sought to learn more about the consumers＇ profile and draw up some recommendations for the organizations, in order to be better prepared to face this new demand. This paper also sought to know the actions already undertaken by a large cosmetics company, parts of whose products aim at class C.展开更多
In the search for renewable energy sources, solar energy appears, among others, as a powerful alternative;mainly for those countries located at Earth’s equatorial region. This is the case of a Fresnel device that use...In the search for renewable energy sources, solar energy appears, among others, as a powerful alternative;mainly for those countries located at Earth’s equatorial region. This is the case of a Fresnel device that uses solar radiation to warm-up the air;for instance, within saunas. Authors coined the term sustainable technological innovation to refer to a technological innovation in accordance to the principles of sustainability. The object of this research was comparing the sustainability of a Fresnel Lens Solar Concentration (FLSC) against the sustainability of other twelve alternatives to generate heat. This article assesses the sustainability of fourteen technological options for heat generation and transfer to saunas in the northwest region of Mexico where temperatures often reach above 45 C and where there is a greater potential for exploiting solar energy. Emergy accounting, economic analysis, and global warming potential are the three indicators considered in quantifying sustainability. Results show that infrared ceramic photovoltaic, infrared carbon photovoltaic and infrared metal photovoltaic are the most sustainable systems. The Fresnel device reached the fourth and tenth position, using electricity from photovoltaic and from grid respectively, among all fourteen assessed devices, respectively. Although Fresnel equipment does not release any global warming gases into the atmosphere, or even it demands low amount of non-renewable resources, 1.40 and 4.47 E17 seJF/yr. it requires high economic investment, 20,800 and 79,600 USD/yr, for the implementation and operation phases, which decrease its sustainability performance compared to twelve other evaluated devices.展开更多
The present work investigates the entropy and the excitation inversion of a coupled system that consists of a qubit represented by a Cooper pair box （CPB） interacting with a transmission line working as a circuit qu...The present work investigates the entropy and the excitation inversion of a coupled system that consists of a qubit represented by a Cooper pair box （CPB） interacting with a transmission line working as a circuit quantum eleetrodynamics （CQED）. The proposed scheme uses the Buck-Sukumar model with a time dependent frequency in the presence of losses to study the evolution of the entropy and the excitation inversion of the system. We have shown that the CQED is much more sensitive to the presence of losses than the CPB. The results also show that it is possible to monitor properties of the subsystems through appropriate choices of the time-dependent parameters.展开更多
The main purpose of this paper was to examine female roles portrayed by advertising. More specifically, the questions that motivated this research project were ＂What messages about women have been given to society th...The main purpose of this paper was to examine female roles portrayed by advertising. More specifically, the questions that motivated this research project were ＂What messages about women have been given to society through advertisement？＂ and ＂Have these portrayals been changed during the past decades？＂ The study consisted of a systematic content analysis of Brazilian commercials from 1973 to 2000. The population from which this sample was drawn consisted of Brazilian commercials which got an award in international and national festivals. A probabilistic sample procedure was employed. Ninety five pieces were selected. The categories and operational rules used in the study were developed based on previous research. This study has proposed that female images in advertising are depicted in three different ways： stereotyped, idealized, and plural portrayals. Our results have revealed that some specific images have changed, however, they continued to be stereotyped and idealized.展开更多
In the last decade, evidence-based medical practice has been supported on a large scale by computerized decision support tools, aiming to reduce diagnostic and therapeutic uncertainty, complementing the actions of the...In the last decade, evidence-based medical practice has been supported on a large scale by computerized decision support tools, aiming to reduce diagnostic and therapeutic uncertainty, complementing the actions of the health professional. With technological developments, it is now possible to consider these systems as part of clinical intervention, both for the diagnosis and treatment of diseases. The literature has described the implementation of e-health tools, that is, technological innovations in the health area such as software, applications, serious games, among others, as a strategy to improve the process and adherence to treatment. However, there is still no standardized instrument in Brazil that can be used to guide the development, from the research phase, and the implementation of these tools as a health intervention, also impacting patient outcomes. With the objective of investigating a new therapeutic and preventive form, based on intervention with a computerized system, this work proposes the creation of guidelines for the registration and implementation of e-health tools as a clinical intervention. The proposal aims to be able to assist in the reporting standardization from the development stage to the application of the e-health tool helping in the treatment of diseases, registering all the experience lived in the research and applying it in different contexts of health.展开更多
Tobacco addiction has been mentioned as a leading cause of preventable illnesses and premature disability. Smoking is the main cause of lung cancer and one of the factors that most contribute to the occurrence of hear...Tobacco addiction has been mentioned as a leading cause of preventable illnesses and premature disability. Smoking is the main cause of lung cancer and one of the factors that most contribute to the occurrence of heart diseases, among others. The herbaceous species Nicotiana tabacum is a plant of the solanaceae family used for tobacco production. Some authors have conducted research about heavy metals and the toxicity of tobacco. It is, frequently, found in low concentrations in the ground, and superficial and underground waters, even though they do not have environmental anthropogenic contributions. However, with the increase of industrial activities and mining together with the agrochemical use of contaminated organic and inorganic fertilizers, an alteration of the geochemical cycle occurs. As a consequence, the natural flow of these materials increases and is released into the biosphere, where they are often accumulated in the superior layer of the ground, accessible to the roots of the plants. During planting and plant development, fertilizers and insecticides, including organochlorines and organophosphates, are used;consequently, the smoke from cigarette smoking presents various toxic substances, such as bromine (Br), manganese (Mn) and antimony (Sb), elements studied in this work. The procedures for the preparation of the samples were carried out in our laboratories and submitted to irradiation with thermal neutrons at Nuclear and Energy Research Institute (IPEN/CNEN-SP), in the Atomic Energy Institute IEA-R1 research reactor. The irradiated material was, then, analyzed by gamma spectrometry, using a high purity germanium detector (HPGe).展开更多
Objective: The present work aims to evaluate the impact of the activities of nursing consultations on health conditions of children served in Clínica de Enfermagem Salvando Vidas com Educa??o. Methods: This is an...Objective: The present work aims to evaluate the impact of the activities of nursing consultations on health conditions of children served in Clínica de Enfermagem Salvando Vidas com Educa??o. Methods: This is an exploratory, descriptive study with a quantitative approach, realized from January through December 2012, at the Clínica de Enfermagem (Nursing Clinic), in the Santa Cruz County, Rio Grande do Norte’s countryside, Brazil. Results: The obtained results showed a significant correlation between the type of pathology and final treatment proven by the value of p = 0.000;as for assessed 60%, more than half were discharged;the most prevalent diseases were the association between cutaneous and gastric with 11% who were discharged and, lastly, the association between gastric and respiratory with 7% discharged. Conclusion: Thus, the activities developed by the project are not restricted to the examination during the nursing consultation, since educational activities are planned from the data obtained in those consultations.展开更多
Objective: This study aimed to evaluate the quality care received by senior citizens in Primary Health Care (PHC) in the Unified Health System, with the objectives of contributing with the comprehensive implementation...Objective: This study aimed to evaluate the quality care received by senior citizens in Primary Health Care (PHC) in the Unified Health System, with the objectives of contributing with the comprehensive implementation of humanized conduct and actions for this part of the population. Methods: This is a descriptive-exploratory study with a quantitative approach that was conducted in the city of Santa Cruz, which is located in the Brazilian state of Rio Grande do Norte, with a population of 130 senior citizens. The research was approved by the Committee for Ethics in Research at the Federal University at Rio Grande do Norte under protocol 152/2012. Results: In the results, the classification of the PHC services varied from good to reasonable. Regarding the assistance offered to the aging and comprehensive care, there were failures in accordance with how it’s recommended in the National Healthcare System. This concludes, through the perspective of the elderly user, the need for the reformulation of the activities which are offered to this population and therefore the implementation of conduct for better service in the area of Primary Health Care.展开更多
Climate change and rapid urbanization are pressing environmental and social concerns, with approximately 56% of the global population living in urban areas. This number is expected to rise to 68% by 2050, leading to t...Climate change and rapid urbanization are pressing environmental and social concerns, with approximately 56% of the global population living in urban areas. This number is expected to rise to 68% by 2050, leading to the expansion of cities and encroachment upon natural areas, including wetlands, causing their degradation and fragmentation. To mitigate these challenges, green and blue infrastructures (GBIs), such as constructed wetlands, have been proposed to emulate and replace the functions of natural wetlands. This study evaluates the potential of eight constructed wetlands near Beijing, China, focusing on their ecosystem services (ESs), cost savings related to human health, growing/maintenance expenses, and disservices using an emergy-based assessment procedure. The results indicate that all constructed wetlands effectively purify wastewater, reducing nutrient concentrations (e.g., total nitrogen, total phosphorus, and total suspended solids). Among the studied wetlands, the integrated vertical subsurface flow constructed wetland (CW-4) demonstrates the highest wastewater purification capability (1.63E+14 sej/m^(2)/yr) compared to other types (6.78E+13 and 2.08E+13 sej/m^(2)/yr). Additionally, constructed wetlands contribute to flood mitigation, groundwater recharge, wildlife habitat protection, and carbon sequestration, resembling the functions of natural wetlands. However, the implementation of constructed wetlands in cities is not without challenges, including greenhouse gas emissions, green waste management, mosquito issues, and disturbances in the surrounding urban areas, negatively impacting residents. The ternary phase diagram reveals that all constructed wetlands provide more benefits than costs and impacts. CW-4 shows the highest benefit-cost ratio, reaching 50%, while free water surface constructed wetland (CW-3) exhibits the lowest benefits (approximately 38%), higher impacts (approximately 25%), and lower costs (approximately 37%) compared to other wetlands. The study advocates the use of an emergy approach as a reliable method to assess the quality of constructed wetlands, providing valuable insights for policymakers in selecting suitable constructed wetlands for effective urban ecological management.展开更多
The change in physical properties of wood pellets,with a focus on particle size distributions due to pellet breakage and attrition,was studied in a large-scale(∼450 ton/h)transportation system.Critical locations with...The change in physical properties of wood pellets,with a focus on particle size distributions due to pellet breakage and attrition,was studied in a large-scale(∼450 ton/h)transportation system.Critical locations with a high probability of breakage through the whole transportation system were chosen and sampled to study the effect of transportation system design and operation on the mechanical properties of pellets.Bulk density,mechanical durability,moisture content,and particle size distribution of pellets were characterized for each sample.Analysis of variance showed that there were significant differences between the percentages of small particles(<5.6 mm)in the samples taken at different locations,especially at one with a vertical free fall of 7.8 m.On average,this relatively long drop increased the proportion of particles<5.6 mm in the samples from 8.73%to 14.09%,and that of particles<3.15 mm from 4.82%to 9.01%.Moreover,the measurements showed a wide deviation in the mechanical durability values,between a minimum of 90.8%and a maximum of 98.7%,which were not correlated to the sampling points but related to pellet properties.It can be concluded that pellet transportation systems require more dedicated design strategies to prevent breakage and attrition.展开更多
文摘Cystic fibrosis(CF)causes chronic infections in the respiratory tract and alters the digestive tract.This paper reviews the most important aspects of drug treatment and changes in the digestive tract of patients with CF.This is a review of the literature,emphasizing the discoveries made within the last 15 years by analyzing scientific papers published in journals indexed in the Scientific Electronic Library Online,Sciences Information,United States National Library of Medicine and Medical Literature Analysis and Retrieval System Online databases,both in English and Portuguese,using the key words:cystic fibrosis,medication,therapeutic,absorption,digestion.Randomized,observational,experimental,and epidemiological clinical studies were selected,among others,with statistical significance of 5%.This review evaluates the changes found in the digestive tract of CF patients including pancreatic insufficiency,constipation and liver diseases.Changes in nutritional status are also described.Clinical treatment,nutritional supplementation and drug management were classified in this review as essential to the quality of life of CF patients,and became available through public policies for monitoring and treating CF.The information gathered on CF and a multi professional approach to the disease is essential in the treatment of these patients.
文摘Background:Biochemical and hematological parameters are important tools for assessing the physiological profile of vital organs,and can be recorded to create reference values used for clinical diagnosis of diseases.Many research laboratories lack the means to establish their own set of reference parameters for use in their research,and while there are articles in the literature that discuss laboratory parameters for healthy BALB/c mice,few studies address the evaluation of these parameters in pathological situations,such as in mice inoculated with Ehrlich tumor.Method:BALB/c-FMABC mice previously inoculated with Ehrlich tumor were maintained under appropriate conditions.Blood samples were taken for analysis of hematological parameters using automated and semi-automated equipment to create a set of the animal welfare parameters for evaluation.Result:Results were obtained for all the hematological parameters for all groups analyzed.These showed:statistically significant differences between the initial and final tumor weight;comparable initial tumour volume and weight;an increase in leukocytes in the 7-day group with a characteristic predominance of lymphocytes and neutrophils;statistically significant changes in RDW in the 21-day group and in the welfare parameters in the 28-day group.Conclusion:The study successfully defined and established reference values for hematological and welfare parameters for all groups analyzed.
文摘Objective: To determine the occurrence of oral manifestations, gingival index, dental state and associated therapeutic aspects in patients with vesiculobullous diseases. Study design: Prospective and observational study conducted with 69 patients from May 2013 to May 2014 at the Dermatology Outpatient Clinic of the Clinical Hospital, University of São Paulo Medical School, Brazil. Data were analyzed for frequency in absolute values, percentage and correlation using the Chi-square test. Results: 84.1% of the patients had oral manifestations of vesiculobullous diseases (p = 0.001);25% had gingival lesions;18.2% had lesions in the buccal mucosa, and 17.6% in the lips, with no correlation between the location and the type of disease (p = 0.990). Among all patients with bullous pemphigoid, linear IgA dermatosis, and mucous membrane pemphigoid, 59 (93.6%) patients had gingival inflammation of dental origin but without significant correlation (p = 0.42). There was correlation between pemphigus vulgaris and periodontal disease (p = 0.05). Conclusion: Gingival inflammation seems to interfere negatively with the clinical course of these diseases. Further studies should be conducted to better clarify the interrelations between dental and gingival state, and between vesiculobullous diseases and oral involvement.
文摘This study investigated the influence of different titanium surfaces on the differentiation of rat osteoblast-like cells (osteo-1). Osteo-1 cells were cultured on the following titanium surfaces: 1) pretreated, smooth surface (PT);2) sandblasted and acid etched surface (SLA);and 3) sandblasted and acid-etched surface rinsed under nitrogen protection to prevent exposure to air and preserved in isotonic saline solution (modSLA). Cell metabolism, total protein content, collagen content and alkaline phosphatase (AP) activity and the formation of calcified nodules were analyzed. The titanium surface did not influence cell metabolism, total protein content and collagen content. The SLA surface influenced cell differentiation, with the observation of a significant reduction of AP activity and formation of calcified nodules after 21 days compared to the PT surface. No difference was observed between the PT and modSLA surfaces. All titanium surfaces tested permitted the full expression of the osteoblast phenotype by osteo-1 cells, including matrix mineralization.
基金Conselho Nacional de Desenvolvimento Científico e Tecnológico/CNPq(Grant No.302355/2016-2)Financiadora de Estudos e Projetos/FINEP(Grant No.01.08.0457.00)+1 种基金Fundação de AmparoàPesquisa do Distrito Federal/FAPD-DF(Grant No.00193.00000920/2020-23)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior/CAPES(Code 001).
文摘In this study,the sperm ultrastructure of three species of Idarnes genus was investigated using light and transmission electron microscopy.Spermatozoon morphology of the three species was similar to that of most Chalcidoidea,with helicoidally twisted nucleus and flagellum.The head region consists of an acrosome and a nucleus;the nucleus-flagellum transition region characterized by the presence of mitochondrial derivatives and the centriolar adjunct;a flagellum region,which includes the axoneme with microtubular arrangement 9+9+2 and two mitochondrial derivatives.However,the sperm of these three species exhibit features that discriminate one species from each other:(1)only one species,Idarnes sp.2(carme group)exhibited an extracellular sheath surrounding the anterior portion of the nucleus,which extends to the anterior region of the flagellum,but it did not present filaments;(2)the acrosome in the three species was quite different,Idarnes sp.1 and Idarnes sp.2(carme group)has two compartments(acrosomal and subacrosomal vesicles)while Idarnes sp.3(flavicollis group)has a third compartment(perforatorium);(3)the centriolar adjunct elongated and its location among the mitochondrial derivatives is similar for the three species analyzed;(4)mitochondrial derivatives differ between the species,with triangular(Idarnes sp.1 and sp.3)and elongated or flat shaped(Idarnes sp.2)appearance.These data shows that sperm structure may differ within the same genus and confirms the potential of these cells in phylogenetic and taxonomic analyses in the Chalcidoidea superfamily,as well as in Hymenoptera in general.
文摘Natural fibers have recently raised attention for presenting adequate mechanical characteristics for reinforcement of structural elements. The use of both natural fibers, in especial Sisal fibers, in wood laminated beams and also wood from reforestation, is in accordance with the current economic interest and ecological appeal. Specifically, the strengthening of wood laminated beams with Sisal fibers is more effective for structures that require an increase in their structural capacity without a significant increase in height of the cross section. Furthermore, it is recommended that this type of reinforcement is used in wood structural elements where the elastic modulus is at least equal to the Sisal fibers. The composition of Sisal fibers is basically of cellulose, lignin and hemicelluloses. In particular, the amount of cellulose and the angle that the micro-fibers with the axis of the fiber characterize the failure strength and the modulus of elasticity. The average mechanical characteristics of the Sisal fiber are： tensile strength 347 to 378 （MPa） and elastic modulus 15.2 （GPa） whereas these properties are lower for strips of Sisal fibers. In this context, this paper deals with the analysis and the viability of the use of Sisal fibers in wood structures as a reinforced material.
文摘This research analyzes the growth impacts promoted by C class in the process of the freezing of the Brazilian industry and increased imports. This emerging market, called class C, which is incorporated in part by the low-income segment, presents distinct characteristics and needs and for this precise reason eventually burdens the short-term production of Brazilian companies, which feel the need to opt for the importation of basic commodities, manufactured, and semi-manufactured goods, in order to maintain a market share and return on their investments. Although this fact is actually part of a trend of global economic transformation, here it is due to a number of irregular actions taken by the Brazilian government facing a short-term political need. Stemming from quantitative researches and qualitative data, this paper sought to learn more about the consumers＇ profile and draw up some recommendations for the organizations, in order to be better prepared to face this new demand. This paper also sought to know the actions already undertaken by a large cosmetics company, parts of whose products aim at class C.
文摘In the search for renewable energy sources, solar energy appears, among others, as a powerful alternative;mainly for those countries located at Earth’s equatorial region. This is the case of a Fresnel device that uses solar radiation to warm-up the air;for instance, within saunas. Authors coined the term sustainable technological innovation to refer to a technological innovation in accordance to the principles of sustainability. The object of this research was comparing the sustainability of a Fresnel Lens Solar Concentration (FLSC) against the sustainability of other twelve alternatives to generate heat. This article assesses the sustainability of fourteen technological options for heat generation and transfer to saunas in the northwest region of Mexico where temperatures often reach above 45 C and where there is a greater potential for exploiting solar energy. Emergy accounting, economic analysis, and global warming potential are the three indicators considered in quantifying sustainability. Results show that infrared ceramic photovoltaic, infrared carbon photovoltaic and infrared metal photovoltaic are the most sustainable systems. The Fresnel device reached the fourth and tenth position, using electricity from photovoltaic and from grid respectively, among all fourteen assessed devices, respectively. Although Fresnel equipment does not release any global warming gases into the atmosphere, or even it demands low amount of non-renewable resources, 1.40 and 4.47 E17 seJF/yr. it requires high economic investment, 20,800 and 79,600 USD/yr, for the implementation and operation phases, which decrease its sustainability performance compared to twelve other evaluated devices.
基金supports by the Conselho Nacional de Desenvolvimento Científico e Tecnológico(CNPq)the FAPEG-CNPq,Brazilian AgenciesRosemberg Fortes Nunes Rodrigues for Fig.1
文摘The present work investigates the entropy and the excitation inversion of a coupled system that consists of a qubit represented by a Cooper pair box （CPB） interacting with a transmission line working as a circuit quantum eleetrodynamics （CQED）. The proposed scheme uses the Buck-Sukumar model with a time dependent frequency in the presence of losses to study the evolution of the entropy and the excitation inversion of the system. We have shown that the CQED is much more sensitive to the presence of losses than the CPB. The results also show that it is possible to monitor properties of the subsystems through appropriate choices of the time-dependent parameters.
文摘The main purpose of this paper was to examine female roles portrayed by advertising. More specifically, the questions that motivated this research project were ＂What messages about women have been given to society through advertisement？＂ and ＂Have these portrayals been changed during the past decades？＂ The study consisted of a systematic content analysis of Brazilian commercials from 1973 to 2000. The population from which this sample was drawn consisted of Brazilian commercials which got an award in international and national festivals. A probabilistic sample procedure was employed. Ninety five pieces were selected. The categories and operational rules used in the study were developed based on previous research. This study has proposed that female images in advertising are depicted in three different ways： stereotyped, idealized, and plural portrayals. Our results have revealed that some specific images have changed, however, they continued to be stereotyped and idealized.
文摘In the last decade, evidence-based medical practice has been supported on a large scale by computerized decision support tools, aiming to reduce diagnostic and therapeutic uncertainty, complementing the actions of the health professional. With technological developments, it is now possible to consider these systems as part of clinical intervention, both for the diagnosis and treatment of diseases. The literature has described the implementation of e-health tools, that is, technological innovations in the health area such as software, applications, serious games, among others, as a strategy to improve the process and adherence to treatment. However, there is still no standardized instrument in Brazil that can be used to guide the development, from the research phase, and the implementation of these tools as a health intervention, also impacting patient outcomes. With the objective of investigating a new therapeutic and preventive form, based on intervention with a computerized system, this work proposes the creation of guidelines for the registration and implementation of e-health tools as a clinical intervention. The proposal aims to be able to assist in the reporting standardization from the development stage to the application of the e-health tool helping in the treatment of diseases, registering all the experience lived in the research and applying it in different contexts of health.
文摘Tobacco addiction has been mentioned as a leading cause of preventable illnesses and premature disability. Smoking is the main cause of lung cancer and one of the factors that most contribute to the occurrence of heart diseases, among others. The herbaceous species Nicotiana tabacum is a plant of the solanaceae family used for tobacco production. Some authors have conducted research about heavy metals and the toxicity of tobacco. It is, frequently, found in low concentrations in the ground, and superficial and underground waters, even though they do not have environmental anthropogenic contributions. However, with the increase of industrial activities and mining together with the agrochemical use of contaminated organic and inorganic fertilizers, an alteration of the geochemical cycle occurs. As a consequence, the natural flow of these materials increases and is released into the biosphere, where they are often accumulated in the superior layer of the ground, accessible to the roots of the plants. During planting and plant development, fertilizers and insecticides, including organochlorines and organophosphates, are used;consequently, the smoke from cigarette smoking presents various toxic substances, such as bromine (Br), manganese (Mn) and antimony (Sb), elements studied in this work. The procedures for the preparation of the samples were carried out in our laboratories and submitted to irradiation with thermal neutrons at Nuclear and Energy Research Institute (IPEN/CNEN-SP), in the Atomic Energy Institute IEA-R1 research reactor. The irradiated material was, then, analyzed by gamma spectrometry, using a high purity germanium detector (HPGe).
文摘Objective: The present work aims to evaluate the impact of the activities of nursing consultations on health conditions of children served in Clínica de Enfermagem Salvando Vidas com Educa??o. Methods: This is an exploratory, descriptive study with a quantitative approach, realized from January through December 2012, at the Clínica de Enfermagem (Nursing Clinic), in the Santa Cruz County, Rio Grande do Norte’s countryside, Brazil. Results: The obtained results showed a significant correlation between the type of pathology and final treatment proven by the value of p = 0.000;as for assessed 60%, more than half were discharged;the most prevalent diseases were the association between cutaneous and gastric with 11% who were discharged and, lastly, the association between gastric and respiratory with 7% discharged. Conclusion: Thus, the activities developed by the project are not restricted to the examination during the nursing consultation, since educational activities are planned from the data obtained in those consultations.
文摘Objective: This study aimed to evaluate the quality care received by senior citizens in Primary Health Care (PHC) in the Unified Health System, with the objectives of contributing with the comprehensive implementation of humanized conduct and actions for this part of the population. Methods: This is a descriptive-exploratory study with a quantitative approach that was conducted in the city of Santa Cruz, which is located in the Brazilian state of Rio Grande do Norte, with a population of 130 senior citizens. The research was approved by the Committee for Ethics in Research at the Federal University at Rio Grande do Norte under protocol 152/2012. Results: In the results, the classification of the PHC services varied from good to reasonable. Regarding the assistance offered to the aging and comprehensive care, there were failures in accordance with how it’s recommended in the National Healthcare System. This concludes, through the perspective of the elderly user, the need for the reformulation of the activities which are offered to this population and therefore the implementation of conduct for better service in the area of Primary Health Care.
基金the National Key Research and Development Program of China(Grant No.2022YFF1301200)the National Natural Science Foundation of China(Grant No.52070021)+1 种基金Research Project of Hainan National Park Research Institute(Grant No.KY-23ZK02)Feni AGOSTINHO is grateful for the financial support provided by CNPq Brazil(Grant No.302592/2019-9).
文摘Climate change and rapid urbanization are pressing environmental and social concerns, with approximately 56% of the global population living in urban areas. This number is expected to rise to 68% by 2050, leading to the expansion of cities and encroachment upon natural areas, including wetlands, causing their degradation and fragmentation. To mitigate these challenges, green and blue infrastructures (GBIs), such as constructed wetlands, have been proposed to emulate and replace the functions of natural wetlands. This study evaluates the potential of eight constructed wetlands near Beijing, China, focusing on their ecosystem services (ESs), cost savings related to human health, growing/maintenance expenses, and disservices using an emergy-based assessment procedure. The results indicate that all constructed wetlands effectively purify wastewater, reducing nutrient concentrations (e.g., total nitrogen, total phosphorus, and total suspended solids). Among the studied wetlands, the integrated vertical subsurface flow constructed wetland (CW-4) demonstrates the highest wastewater purification capability (1.63E+14 sej/m^(2)/yr) compared to other types (6.78E+13 and 2.08E+13 sej/m^(2)/yr). Additionally, constructed wetlands contribute to flood mitigation, groundwater recharge, wildlife habitat protection, and carbon sequestration, resembling the functions of natural wetlands. However, the implementation of constructed wetlands in cities is not without challenges, including greenhouse gas emissions, green waste management, mosquito issues, and disturbances in the surrounding urban areas, negatively impacting residents. The ternary phase diagram reveals that all constructed wetlands provide more benefits than costs and impacts. CW-4 shows the highest benefit-cost ratio, reaching 50%, while free water surface constructed wetland (CW-3) exhibits the lowest benefits (approximately 38%), higher impacts (approximately 25%), and lower costs (approximately 37%) compared to other wetlands. The study advocates the use of an emergy approach as a reliable method to assess the quality of constructed wetlands, providing valuable insights for policymakers in selecting suitable constructed wetlands for effective urban ecological management.
基金This study has received funding from the Top Consortium for Knowledge and Innovation for the Biobased Economy(TKI-BBE),under grant number BBE-1713(Biomassa pellets:Degradatie tij-dens transport en handling).
文摘The change in physical properties of wood pellets,with a focus on particle size distributions due to pellet breakage and attrition,was studied in a large-scale(∼450 ton/h)transportation system.Critical locations with a high probability of breakage through the whole transportation system were chosen and sampled to study the effect of transportation system design and operation on the mechanical properties of pellets.Bulk density,mechanical durability,moisture content,and particle size distribution of pellets were characterized for each sample.Analysis of variance showed that there were significant differences between the percentages of small particles(<5.6 mm)in the samples taken at different locations,especially at one with a vertical free fall of 7.8 m.On average,this relatively long drop increased the proportion of particles<5.6 mm in the samples from 8.73%to 14.09%,and that of particles<3.15 mm from 4.82%to 9.01%.Moreover,the measurements showed a wide deviation in the mechanical durability values,between a minimum of 90.8%and a maximum of 98.7%,which were not correlated to the sampling points but related to pellet properties.It can be concluded that pellet transportation systems require more dedicated design strategies to prevent breakage and attrition.
