EFICIÊNCIA ENERGÉTICA E TRATAMENTO DE RESÍDUOS APLICADO À SERRARIA DE QUARTZITO NA PARAÍBA

Com o crescimento acentuado da construção civil, o comércio de rochas ornamentais sofreu um forte aumento nos últimos anos, dentre estas está inserido o Quartzito. Rocha com suas particularidades características e de variadas aplicabilidades, é encontrada em diversas cores e em abundância no município de Junco do Seridó na Mesorregião do estado da Paraíba. Com o aumento do beneficiamento do Quartzito, consequentemente, tem acrescido a quantidade de resíduos gerados e a problemática de sua destinação correta. A busca da reutilização desses resíduos no processo produtivo das fabricas que beneficiam essas rochas vem aumentado, tanto pelo incremento econômico quanto pela preservação ambiental. Desta forma, neste trabalho objetiva-se caracterizar os resíduos gerados no beneficiamento do Quartzito e propor soluções de tratamento e alternativas de aplicabilidade para estes

EFICIÊNCIA ENERGÉTICA E TRATAMENTO DE RESÍDUOS APLICADO À SERRARIA DE QUARTZITO NA PARAÍBA

Com o crescimento acentuado da construção civil, o comércio de rochas ornamentais sofreu um forte aumento nos últimos anos, dentre estas está inserido o Quartzito. Rocha com suas particularidades características e de variadas aplicabilidades, é encontrada em diversas cores e em abundância no município de Junco do Seridó na Mesorregião do estado da Paraíba. Com o aumento do beneficiamento do Quartzito, consequentemente, tem acrescido a quantidade de resíduos gerados e a problemática de sua destinação correta. A busca da reutilização desses resíduos no processo produtivo das fabricas que beneficiam essas rochas vem aumentado, tanto pelo incremento econômico quanto pela preservação ambiental. Desta forma, neste trabalho objetiva-se caracterizar os resíduos gerados no beneficiamento do Quartzito e propor soluções de tratamento e alternativas de aplicabilidade para estes

IMPLEMENTAÇÃO DE SISTEMAS AUTÔNOMOS DE GERAÇÃO DE ENERGIA PARA A REGIÃO DO SEMIÁRIDO PARAIBANO

A busca por novos recursos energéticos possuindo baixos índices de emissão de poluentes faz com que a sociedade científica se volte para a pesquisa em energias renováveis para um desenvolvimento sustentável. O hidrogênio surge neste cenário socioambiental como um promissor vetor energético autossustentável para substituir os combustíveis fósseis. A produção de hidrogênio através da eletrólise da água vem sendo bastante explorada devido a geração de densidade de corrente elétrica maior quando comparada a outros métodos. As pesquisas relacionadas a produção deste gás estão sendo concentradas com a geração de energia elétrica. Diante da crise energética em que vivemos, as células combustíveis inserem-se como uma alternativa para produção de energia elétrica. O interesse neste sistema reside na eficiência do mesmo gerar energia utilizando uma fonte renovável como combustível. A partir desta nova perspectiva exposta, o presente trabalho tem como objetivo evidenciar o princípio de funcionamento de um reator eletrolítico, painel solar e uma célula combustível em residências como proposta a ser utilizado no semiárido da Paraíba

Global variation in postoperative mortality and complications after cancer surgery: a multicentre, prospective cohort study in 82 countries

© 2021 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY-NC-ND 4.0 licenseBackground: 80% of individuals with cancer will require a surgical procedure, yet little comparative data exist on early outcomes in low-income and middle-income countries (LMICs). We compared postoperative outcomes in breast, colorectal, and gastric cancer surgery in hospitals worldwide, focusing on the effect of disease stage and complications on postoperative mortality. Methods: This was a multicentre, international prospective cohort study of consecutive adult patients undergoing surgery for primary breast, colorectal, or gastric cancer requiring a skin incision done under general or neuraxial anaesthesia. The primary outcome was death or major complication within 30 days of surgery. Multilevel logistic regression determined relationships within three-level nested models of patients within hospitals and countries. Hospital-level infrastructure effects were explored with three-way mediation analyses. This study was registered with ClinicalTrials.gov, NCT03471494. Findings: Between April 1, 2018, and Jan 31, 2019, we enrolled 15 958 patients from 428 hospitals in 82 countries (high income 9106 patients, 31 countries; upper-middle income 2721 patients, 23 countries; or lower-middle income 4131 patients, 28 countries). Patients in LMICs presented with more advanced disease compared with patients in high-income countries. 30-day mortality was higher for gastric cancer in low-income or lower-middle-income countries (adjusted odds ratio 3·72, 95% CI 1·70–8·16) and for colorectal cancer in low-income or lower-middle-income countries (4·59, 2·39–8·80) and upper-middle-income countries (2·06, 1·11–3·83). No difference in 30-day mortality was seen in breast cancer. The proportion of patients who died after a major complication was greatest in low-income or lower-middle-income countries (6·15, 3·26–11·59) and upper-middle-income countries (3·89, 2·08–7·29). Postoperative death after complications was partly explained by patient factors (60%) and partly by hospital or country (40%). The absence of consistently available postoperative care facilities was associated with seven to 10 more deaths per 100 major complications in LMICs. Cancer stage alone explained little of the early variation in mortality or postoperative complications. Interpretation: Higher levels of mortality after cancer surgery in LMICs was not fully explained by later presentation of disease. The capacity to rescue patients from surgical complications is a tangible opportunity for meaningful intervention. Early death after cancer surgery might be reduced by policies focusing on strengthening perioperative care systems to detect and intervene in common complications. Funding: National Institute for Health Research Global Health Research Unit

Effects of hospital facilities on patient outcomes after cancer surgery: an international, prospective, observational study

© 2022 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 licenseBackground: Early death after cancer surgery is higher in low-income and middle-income countries (LMICs) compared with in high-income countries, yet the impact of facility characteristics on early postoperative outcomes is unknown. The aim of this study was to examine the association between hospital infrastructure, resource availability, and processes on early outcomes after cancer surgery worldwide. Methods: A multimethods analysis was performed as part of the GlobalSurg 3 study—a multicentre, international, prospective cohort study of patients who had surgery for breast, colorectal, or gastric cancer. The primary outcomes were 30-day mortality and 30-day major complication rates. Potentially beneficial hospital facilities were identified by variable selection to select those associated with 30-day mortality. Adjusted outcomes were determined using generalised estimating equations to account for patient characteristics and country-income group, with population stratification by hospital. Findings: Between April 1, 2018, and April 23, 2019, facility-level data were collected for 9685 patients across 238 hospitals in 66 countries (91 hospitals in 20 high-income countries; 57 hospitals in 19 upper-middle-income countries; and 90 hospitals in 27 low-income to lower-middle-income countries). The availability of five hospital facilities was inversely associated with mortality: ultrasound, CT scanner, critical care unit, opioid analgesia, and oncologist. After adjustment for case-mix and country income group, hospitals with three or fewer of these facilities (62 hospitals, 1294 patients) had higher mortality compared with those with four or five (adjusted odds ratio [OR] 3·85 [95% CI 2·58–5·75]; p<0·0001), with excess mortality predominantly explained by a limited capacity to rescue following the development of major complications (63·0% vs 82·7%; OR 0·35 [0·23–0·53]; p<0·0001). Across LMICs, improvements in hospital facilities would prevent one to three deaths for every 100 patients undergoing surgery for cancer. Interpretation: Hospitals with higher levels of infrastructure and resources have better outcomes after cancer surgery, independent of country income. Without urgent strengthening of hospital infrastructure and resources, the reductions in cancer-associated mortality associated with improved access will not be realised. Funding: National Institute for Health and Care Research