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1.
Sustainability ; 14(12), 2022.
Article in English | CAB Abstracts | ID: covidwho-2080463

ABSTRACT

Brazil's primary sanitation sector has been neglected, especially concerning rural sanitation. Population dispersion and the difficulty of access in many rural communities bring more significant challenges to the universalization of the service and, consequently, vulnerabilities for the population. The present work builds a theoretical framework about the context of rural sanitation in Brazil, with history, weaknesses in the sector, the impact of COVID-19 and new technologies, and central public policies in the State of Pernambuco. It is known that COVID-19 has caused considerable challenges that, added to the obstacles to national sanitation, result in greater vulnerability to the population, especially for indigenous peoples, quilombolas, and diffuse rural communities. In the State of Pernambuco, certain policies, such as the One Million Rural Cisterns Program (P1MC), One Land and Two Waters Program (P1 + 2), Agua Doce Program and Operacao Pipa Program, significantly improved the quality of life of the rural population. However, these measures are not enough to remedy the sector's shortcomings. Although alternative sanitation technologies bring hope to the sector, there is a long way to go towards the universalization of sanitation.

2.
Am J Trop Med Hyg ; 107(5): 1060-1065, 2022 Nov 14.
Article in English | MEDLINE | ID: covidwho-2080693

ABSTRACT

Previous coronavirus epidemics were associated with increased maternal morbidity, mortality, and adverse obstetric outcomes. Reports for SARS-CoV-2 indicate that the obstetric population is at increased risk for severe illness, although there are still limited data on mild COVID-19 infection during pregnancy. To determine the association between mild COVID-19 infection during pregnancy, and maternal and neonatal outcomes, we performed a prospective cohort study among pregnant women with COVID-19 and a control group. Postnatal depressive symptoms were assessed using the Edinburgh Postnatal Depression Scale. We recruited 84 pregnant women with mild COVID-19 and 88 pregnant women without COVID-19. All participants were unvaccinated. The most common acute COVID-19 symptoms were headache (82.1%), loss of smell (81%), and asthenia (77.4%). The median duration of long COVID symptoms was 60 days (interquartile range, 130). Pregnant women with a COVID-19 diagnosis were at greater risk for obstetric ultrasound abnormalities-mainly, fetal growth restriction (relative risk [RR], 12.40; 95% CI, 1.66-92.5), premature birth (RR, 2.62; 95% CI, 1.07-6.43), and postpartum depression (RR, 2.28; 95% CI, 1.24-4.21). Our results alert clinicians to the consequences of COVID-19 during pregnancy, even in mild cases, given the increased risk of ultrasound abnormalities, premature birth, long COVID symptoms, and postpartum depression. National guidelines on preventive measures and treatments should be based on scientific evidence, including attention to the impact on health and family needs during and after the COVID-19 pandemic.

3.
Caderno Virtual de Turismo ; 22(2):28-41, 2022.
Article in Portuguese | CAB Abstracts | ID: covidwho-2040528

ABSTRACT

The municipality of Florianopolis has tourism, hotels and events as an important development sector. During the Covid-19 pandemic, the sector was greatly affected due to the reduction in the mobility of people and measures to control the contagion. In order to identify and understand the lessons learned by professionals in the public tourism sector in Florianopolis during the management of the pandemic in 2020, six professionals from the Municipal Secretariat of Tourism, Technology and Economic Development were interviewed. For data analysis, the qualitative method of thematic analysis was used. The results show eight sets of interrelated themes that aggregate learning: technical decisions and health protocols;information and communication;learning and capacity building;organizational resilience;resumption and recovery;personal lessons;supervision and penalty;change in the form of tourism.

4.
31st ACM Web Conference, WWW 2022 ; : 852-859, 2022.
Article in English | Scopus | ID: covidwho-2029535

ABSTRACT

When the world is facing the COVID-19 pandemic, society is also fighting another battle to tackle misinformation. Due to the widespread effect of COVID 19 and increased usage of social media, fake news and rumors about COVID-19 are being spread rapidly. Identifying such misinformation is a challenging and active research problem. The lack of suitable datasets and external world knowledge contribute to the challenges associated with this task. In this paper, we propose MiCNA, a multi-context neural architecture to mitigate the problem of COVID-19 fake news detection. In the proposed model, we leverage the rich information of the three different pre-trained transformer-based models, i.e., BERT, BERTweet and COVID-Twitter-BERT to three different aspects of information (viz. general English language semantics, Tweet semantics, and information related to tweets on COVID 19) which together gives us a single multi-context representation. Our experiments provide evidence that the proposed model outperforms the existing baseline and the candidate models (i.e., three transformer architectures) and becomes a state-of-the-art model on the task of COVID-19 fake-news detection. We achieve new state-of-the-art performance on a benchmark COVID-19 fake-news dataset with 98.78% accuracy on the validation dataset and 98.69% accuracy on the test dataset. © 2022 ACM.

5.
Journal of Clinical and Experimental Hepatology ; 12:S30, 2022.
Article in English | EMBASE | ID: covidwho-1996318

ABSTRACT

Background and Aim: Hepatic encephalopathy (HE) in acute-on-chronic liver failure (ACLF) is associated with significant morbidity and mortality. There is limited evidence regarding HE management in patients with ACLF. We conducted a prospective, randomized controlled clinical trial to study the efficacy of intravenous branched chain amino acids (IV-BCAA) with lactulose versus lactulose alone for improvement in HE at 24h, day 3 & day 7. Duration of ICU stay and survival at days 7 and 28 was compared. Methods: CANONIC ACLF patients with HE grades>=2 were randomized into two groups - experimental arm (IV-BCAA - 500mL/day for 3 days + Lactulose;n=39) and comparator arm (Lactulose alone;n=37). Six patients developed COVID-19 after randomization & were excluded (4-experimental arm & 2-comparator arm). HE Grade was assessed by West Haven Classification and Hepatic Encephalopathy Scoring Algorithm (HESA). ACLF severity was determined by CLIF-C ACLF and MELD scores. All patients received standard of care. Results: Both groups were similar in baseline characteristics including grade of HE (2.85 ± 0.75 vs 2.82 ± 0.66;P = 0.864) and CLIF-C ACLF score (54.19 ± 5.55 vs 54.79 ± 5.74;P = 0.655). Overall survival was 40% at 28 days (48.5% vs 31.4%;P=0.143). Significant improvement in HESA score by 1 grade at 24h was seen in 14 patients (40%) in BCAA arm and 6 patients (17.14%) in control group (P=0.034) which translated to shorter ICU stay in the BCAA arm. Median change in HESA score at 24h was significantly more in BCAA arm than control arm (P=0.006), however, this was not sustained at day 3 or 7. Ammonia levels did not correlate with HE grade (Spearman correlation coefficient (-0.0843;P=0.295). Conclusion: Intravenous BCAA leads to early but ill-sustained improvement in grade of HE and reduced ICU stay in ACLF.

6.
Gastroenterology ; 162(7):S-1247, 2022.
Article in English | EMBASE | ID: covidwho-1967428

ABSTRACT

Introduction Vaccines have emerged as our primary line of defence against the scourge of COVID-19. Patients with cirrhosis have a higher risk of severe COVID-19 and mortality and are thus high priority patients for vaccination. However, cirrhotics were excluded from the phase 2 and 3 trials of COVID-19 vaccines. Hence, we aimed to assess the seroconversion rate and safety of currently available COVID-19 vaccines in India, namely COVISHIELD (ChAdOx1 nCoV-19) and COVAXIN (BBV 152), in patients with cirrhosis. Methods All patients who had attended tele-hepatology services at our institute from March 2020 to June 2021 and diagnosed with cirrhosis as per their medical records were telephonically interviewed in July 2021 using a pre-specified questionnaire. Patients who had completed full course of vaccine (with the 2nd dose being administered at least 2 weeks back) and without history of documented COVID-19 infection (pre or post vaccination) were tested for SARS-CoV-2 IgG antibodies using an automated chemiluminescent assay (Orthoclinical Diagnostics). Our primary outcome was seroconversion in patients with cirrhosis who had received complete COVID-19 vaccination. Secondary outcomes included vaccine acceptance, documented COVID-19 infection post-vaccination and adverse effects of COVID-19 vaccines in cirrhosis. Results We identified and interviewed 784 patients with cirrhosis [compensated: 213 (27.2%), decompensated 561 (72.8%)] with a mean age of 51.07 ± 8.53 years. Two eighty-three (36.1%) patients had received at least 1 dose of COVID-19 vaccine [COVISHIELD: 231 (29.5%), COVAXIN: 52 (6.6%)] and 159 (20.3%) patients had completed full course of vaccination with 2 doses [COVISHIELD: 134 (17.1%), COVAXIN: 25 (3.2%)]. Documented COVID-19 (on RT-PCR) was reported in 3.2% (9/283) patients who had received at least one dose of COVID-19 vaccine while breakthrough COVID-19 (at-least 2 weeks after administration of 2nd dose) was reported in 3.1% (5/159). Adverse events were reported by 19.8% (56/283) patients with the most common being fever (13.1%), myalgia (5.6%) and sore throat (1.1%). No grade III/IV adverse events were reported. So far, 100 fully vaccinated patients (COVISHIELD: 88, COVAXIN: 12) have been tested for seroconversion. Seroconversion rate with COVISHIELD and COVAXIN were 92% (81/88) and 91.7% (11/ 12), respectively. Seropositive patients were divided into high, moderate, and low antibody responses based on the observed signal/cut-off response and no differences were observed between patients with compensated and decompensated cirrhosis (Table 1). There was no correlation between antibody signal/cut-off ratios and CTP (tau: 0.07, p=0.32) or MELD (tau: 0.08, p=0.29) scores. Conclusion Our preliminary data suggests that currently available COVID-19 vaccines in India are safe with high seroconversion rates in patients with cirrhosis. (Table Presented)

7.
Engenharia Sanitaria e Ambiental ; 27(2):335-346, 2022.
Article in Portuguese | GIM | ID: covidwho-1963167

ABSTRACT

Access to water and sanitation is essential to combat the transmission of COVID-19. In this context, the objective of the study was to evaluate the conditions of water supply, collection and sewage treatment in the municipalities with the highest number of COVID-19 cases in Brazil, also considering the role of regulation and the challenge of reaching the goals of the Sustainable Development Goal (SDG) 6. It is justified by the unprecedented nature of knowledge promotion through data among these factors. Initially, the work correlated SDG 6 with water supply and sanitation using indicators from the National Sanitation Information System (Sistema Nacional de Informacoes sobre Saneamento - SNIS), crossing the data with the municipalities with the most cases of COVID-19 to assess performance and the role of regulation. Thus, looking at the cities with the highest number of confirmed cases of COVID-19, the link between the pandemic and the ranking of the worst water and sanitation indicators became evident. The lack of these services alone does not promote the disease, but it is one of the factors that makes preventive measures difficult and may favor their dispersion and indicate the fragility of health conditions in these places. The percentages achieved were 45% for SDG 6.1, 25% for SDG 6.2 and 6.3 and 0% for SDG 6.4, mainly affecting disadvantaged communities with the highest proportion of confirmed cases of COVID-19. Therefore, regulatory agencies need to transform the indicators of continuity of water and sewage supply in Brazil, a condition applicable to developing countries.

8.
Am J Rhinol Allergy ; 36(6): 780-787, 2022 Nov.
Article in English | MEDLINE | ID: covidwho-1957011

ABSTRACT

BACKGROUND: Olfactory dysfunction (OD)-including anosmia and hyposmia-is a common symptom of COVID-19. Previous studies have identified olfactory training (OT) as an important treatment for postinfectious OD; however, little is known about its benefits and optimizations after SARS-CoV-2 infection. OBJECTIVE: This study aimed to assess whether olfactory training performance can be optimized using more fragrances over a shorter period of time in patients with persistent OD after COVID-19. In addition, we determined the presence of other variables related to OD and treatment response in this population. METHODS: This multicenter randomized clinical trial recruited 80 patients with persistent OD and prior COVID-19 infection for less than 3 months. The patients were divided into 2 groups receiving either 4 or 8 essences over 4 weeks. Subjective assessments and the University of Pennsylvania Smell Identification Test (UPSIT) were performed before and after the treatment. RESULTS: Significant olfactory improvement was measured subjectively and using the UPSIT in both groups; however, no significant differences between the groups were observed. Additionally, the presence of olfactory fluctuations was associated with higher UPSIT scores. CONCLUSION: These data suggest that training intensification by increasing the number of essences for 4 weeks does not show superiority over the classical method. Moreover, fluctuant olfaction seems to be related to a higher score on the UPSIT.


Subject(s)
COVID-19 , Olfaction Disorders , COVID-19/complications , Humans , Odorants , Olfaction Disorders/diagnosis , Olfaction Disorders/epidemiology , Olfaction Disorders/therapy , SARS-CoV-2 , Smell/physiology
9.
Adv Radiat Oncol ; 7(5): 100667, 2022.
Article in English | MEDLINE | ID: covidwho-1899443

ABSTRACT

Purpose: The COVID-19 pandemic brought several challenges to cancer practice, especially in ensuring continuity of treatment during this period while minimizing the risks of transmission to a vulnerable population. For radiation oncology departments in Brazil, this contingency has become even more complex owing to the significant effect observed in different sectors of society and the large number of COVID-19 cases and deaths. This study estimated the effect of the COVID-19 pandemic on Brazilian radiation oncology departments and the coping measures used in the country. Methods and Materials: The Brazilian Radiotherapy Society developed a questionnaire, with 14 questions, that were sent to all heads of radiation oncology departments in the country between May and June 2020. These data were evaluated regarding cases confirmed and deaths by COVID-19 in epidemiologic week 28, on July 11, 2020. Results: One hundred twenty-six questionnaires from different regions were answered, representing 44% of the country's services. A drop in the number of patients was observed in 61% of services. This drop was observed both in patients from the public and supplementary private health insurance systems. Regarding patients and employees with COVID-19, we observed that services that primarily treat Unified Health System patients reported significantly fewer cases of the disease. About half of the services had collaborators and patients during radiation therapy with a positive diagnosis of COVID-19. Among the coping measures, the services used intensified hygiene and cleanliness practices, interpersonal distancing, restrictions on access to companions, and other changes in daily practice. Conclusions: Thus, there was an important drop in the number of radiation therapy patients in the country during the pandemic, and this effect was similar among the services, regardless of the characteristics of the patients and the departments' coping measures adopted during the pandemic.

10.
Journal of Scientometric Research ; 11(1):47-54, 2022.
Article in English | Web of Science | ID: covidwho-1897066

ABSTRACT

This study aims to analyze the dynamics of the published articles and preprints of Covid-19 related literature from different scientific databases and sharing platforms. The PubMed, ScienceDirect, and ResearchGate (RG) databases were under consideration in this study over a specific time. Analyses were carried out on the number of publications as (a) function of time (day), (b) journals and (c) authors. Doubling time of the number of publications was analyzed for PubMed "all articles" and ScienceDirect published articles. Analyzed databases were (1A) PubMed (01/12/2019-12/06/2020) "all_articles" (16) PubMed Review articles) and (1C) PubMed Clinical Trials (2) ScienceDirect all publications (01/12/2019- 25/05/2020) (3) RG (Article, Pre Print, Technical Report) (15/04/2020 - 30/4/2020). Total publications in the observation period for PubMed, ScienceDirect, and RG were 23000, 5898 and 5393 respectively. The average number of publications/day for PubMed, ScienceDirect and RG were 70.0 +/- 128.6, 77.6 +/- 125.3 and 255.6 +/- 205.8 respectively. PubMed shows an avalanche in the number of publications around May 10, the number of publications jumped from 6.0 +/- 8.4/day to 282.5 +/- 110.3/ day. The average doubling time for PubMed, ScienceDirect, and RG was 10.3 +/- 4 days, 20.6 days, and 2.3 +/- 2.0 days respectively. The average number of publications per author for PubMed, ScienceDirect, and RG was 1.2 +/- 1.4, 1.3 +/- 0.9, and 1.1 +/- 0.4 respectively. Subgroup analysis, PubMed review articles mean review <0 vertical bar 17 +/- 17 vertical bar 77> days: and reducing at a rate of -0.21 days (count)/day. The number of publications related to the COVID-19 until now is huge and growing very fast with time. It is essential to rationalize and limit the publications.

11.
19th International Conference on Information Technology Based Higher Education and Training, ITHET 2021 ; 2021.
Article in English | Scopus | ID: covidwho-1874319

ABSTRACT

This paper introduces an Augmented Reality (AR)-based chemistry (ARChem) lab platform for teaching and assessment. The current in-class lab teaching has several drawbacks such as the high cost of lab materials, physical constraints in lab sizes, and exposure to hazardous materials. Besides, with Covid-19, access to the in-person labs and materials is significantly restricted. This restriction hampers regular lab instruction, self-learning, and hands-on experience. Our ARChem platform stems from the motivation of delivering a similar experience to regular instruction. In addition, ARChem aims to promote learning and advancement by incorporating gaming elements. Also, assessment and evaluation are provided for self-improvement. Our ARChem in-class chemistry lab uses a physical environment and virtual lab equipment and fluids. The environment is based on the AR technique where virtual lab equipment and materials (e.g. fluids and supplies) are overlaid on the physical environment using only mobile devices. To do this efficiently, ARChem provides computationally optimal methods such as simulating multiple bimanual chemistry reactions, low-cost fluid physics in containers, and realistic visualization. We enable a realistic lab environment with minimal hardware constraints attaining high simulation and visual frame rates. This simulation efficiency makes ARChem compatible with a wide range of low-end mobile devices and is accessible to any student. Our ultimate goal is to eliminate the drawbacks of current in-class teaching with a simulation environment and improve remote and asynchronous learning experience especially during an outbreak like Covid-19. © 2021 IEEE.

12.
Revista Espanola de Salud Publica ; 96(e202203036), 2022.
Article in Spanish | GIM | ID: covidwho-1871298

ABSTRACT

Background: After the acute period of infection by the SARS-CoV-2 virus (COVID-19), multi-organ signs and symptoms may remain. This study tried to compare the perception of the state of health and the sequelae in Navarra-Osasunbidea health workers after COVID-19, with the previous situation through the Health Survey.

13.
Journal of Ethnic Foods ; 9(11), 2022.
Article in English | CAB Abstracts | ID: covidwho-1833392

ABSTRACT

The tourist-catering subsector plays an important role in the consolidation and attraction of tourism products and services offered. This research aims to ascertain the importance of synergies, and proactive collaborative and co-operational relations between agri-food suppliers and the restaurants. This is a qualitative, exploratory and descriptive methodology, data source triangulation, information processing using NVIVO12 software. This study identifying that the city of Cordoba offers a variety of gastronomic products and services, and that the supply sector is semi-structured and still in need of improvements of quality, safety and having a wider commercial network. Despite the COVID-19 pandemic, suppliers have reinvented themselves and created new market opportunities to benefit from rapid growth in some sectors;furthermore, they are in a position to offer restaurants a competitive advantage in post-pandemic recovery.

14.
Virus Evol ; 8(1): veac024, 2022.
Article in English | MEDLINE | ID: covidwho-1774420

ABSTRACT

The coronavirus disease 2019 (COVID-19) epidemic in Brazil was driven mainly by the spread of Gamma (P.1), a locally emerged variant of concern (VOC) that was first detected in early January 2021. This variant was estimated to be responsible for more than 96 per cent of cases reported between January and June 2021, being associated with increased transmissibility and disease severity, a reduction in neutralization antibodies and effectiveness of treatments or vaccines, and diagnostic detection failure. Here we show that, following several importations predominantly from the USA, the Delta variant rapidly replaced Gamma after July 2021. However, in contrast to what was seen in other countries, the rapid spread of Delta did not lead to a large increase in the number of cases and deaths reported in Brazil. We suggest that this was likely due to the relatively successful early vaccination campaign coupled with natural immunity acquired following prior infection with Gamma. Our data reinforce reports of the increased transmissibility of the Delta variant and, considering the increasing concern due to the recently identified Omicron variant, argues for the necessity to strengthen genomic monitoring on a national level to quickly detect the emergence and spread of other VOCs that might threaten global health.

16.
Br J Nutr ; : 1-26, 2022 Mar 14.
Article in English | MEDLINE | ID: covidwho-1740370

ABSTRACT

The aim of this study was to ascertain the level of occupational stress before and during the COVID-19 pandemic, how it changed, and its association with health outcomes of hospital workers in the Recôncavo of Bahia, Brazil. A longitudinal study was conducted with 218 hospital workers over 18 years old. A semi-structured questionnaire was used for collecting sociodemographic, occupational, lifestyle, anthropometric, and health data. The main exposures were occupational stress, assessed through Job Content Questionnaire and classified according to the Demand-Control Model and reported shift work. Health outcomes considered were nutritional status assessed by Body Mass Index (BMI), Waist Circumference (WC), and Body Fat Percentage (BF%); health self-perception; and cardiovascular risk factors. We used McNemar chi-squared or Wilcoxon tests to compare levels of exposure and outcome variables before and during the pandemic, and odds ratios to evaluate associations between changes in occupational stress and shiftwork with health outcomes. During the pandemic, participants reported increased occupational stress and shift work, lower self-perceived health, and had higher BMI and cardiovascular risk factors, compared with before the pandemic. No association was observed between change in occupational stress and health outcomes. However, increased amount of shift work was related to increased BMI in the overall sample (OR 3.79, CI95% 1.40-10.30), and in health workers (OR 11.56; CI95% 2.57-52.00). These findings support calls to strengthen labour policies to ensure adequate working conditions for hospital workers in context of the COVID-19 pandemic.

17.
World Development ; 138(66), 2021.
Article in English | CAB Abstracts | ID: covidwho-1735043

ABSTRACT

Indigenous peoples in Brazil have suffered disproportionately from the COVID-19 pandemic due to limited access to an already precarious public health system together with continued attacks on their cultures, their territories and their way of life. These attacks come as part of the government's attempts to further neoliberal development and undermine environmental and indigenous rights, taking advantage of what the Minister of Environment called 'a moment of calm while the press is focusing on the pandemic'. The pandemic has intensified environmental conflicts affecting indigenous peoples, both in amplifying conflicts but also in sparking new acts of resistance and self-protection of indigenous lives and territories. Based on case studies and monitoring of rapidly evolving social media and WhatsApp posts, the researchers analyse these processes through a political ecology lens. The researchers find confirmed cases and deaths amongst indigenous peoples centred around tourism hotspots, mining sites, and other development projects. Yet the presence of these risks, and long term conflicts related to land-grabbing and resource theft linked to said development, has in some cases strengthened community ties and increased capacity for active resistance. While some Mebengokr.. (Kayap..) communities in the Amazon have fled further into the forest to maintain isolation, others have expelled gold-miners from their villages. Tupinamb.. and Patax.. communities in the Northeast have set up blockades to keep people, and the virus, out. The retomadas, or reclaiming of land, of the Tupinamb.., Patax.. and Patax..-H..h..hai in Bahia State, are a case in point: the long-term struggle to reclaim their lands has strengthened community ties and capacity for active resistance. The recent road blockades of the Mebengokr.. (Kayap..) incorporated demands for COVID-19 support into a long history of demands for compensation for the negative impacts suffered from mining and road construction in their territories. At the national level, indigenous movements, which have grown in strength and number in the fight against Bolsonaro's 'politics of extermination' and through engagement of a new cohort of indigenous youth who had access to higher education, were able to draw on social media and indigenous led court cases to help counteract the 'genocide by omission' that has been worsened by the pandemic.

18.
Rosa dos Ventos ; 13(Especial Covid-19), 2021.
Article in Portuguese | CAB Abstracts | ID: covidwho-1716848

ABSTRACT

This article discusses about Covid-19 and its implications for the provision of tourist services, as it presents the pandemic actions that have been developed and promoted by the Ministry of Tourism, the governments of the Midwest of Brazil, and the class associations of tourism service. The study is exploratory, and bibliographic and documentary research was carried out for collection purposes. Decrees and laws were published to regulate/guide consumer and labor relations during the pandemic;there was the preparation of booklets and manuals to direct the conducts of consumption and work and among other actions/strategies to cope with the pandemic in Brazil, promotion took place and encourages the rebooking and non-cancellation of the services already purchased.

19.
Energies ; 15(3):1058, 2022.
Article in English | ProQuest Central | ID: covidwho-1686669

ABSTRACT

Renewable energy must be prioritized by humankind, mainly if there is an expected increase of 50% in energy consumption by 2030 and climate change scenarios are also confirmed. Urban areas consume 70% of the available energy on the planet. Brazil, the largest country in South America, concentrates more than 85% of its population in urban areas, facing a challenge to increase the renewable power plants in its energy matrix. This work presents the solar radiation components behavior for the city of Salvador to contribute with initiatives for the use of solar energy resource. Firstly, a radiometric platform was implemented to obtain direct measurements of global (EG) and diffuse (EDF) components of incoming solar radiation at the surface. The knowledge of EDF is an important requirement to support photovoltaic system projects, and there is no information on direct measurements of this component in the State of Bahia. The diffuse radiation measurement device (DRMD) was designed and built for this purpose. The measurements of solar radiation components performed in this research were submitted to a specific quality control, statistically analyzed and used to evaluate the performance of different empirical models to represent the behavior of EDF  in the tropical coastal city. The results demonstrate the potential to explore solar energy in the city of Salvador, with annual values of sunshine higher than 2200 h year−1 and average daily intensities of EG  and EDF  equal to 18.7 MJm−2day−1 and 7.35 MJm−2day−1,  respectively. The analysis of the diurnal cycle shows that EG in summer reaches a maximum of 4.2 MJm−2h−1 and in the rainy season it reaches a minimum of 3.7 MJm−2h−1, both at noon, and in summer the EDFh is 35% of the EGh and it is 46% in the rainy season.

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