scholarly journals A Review and Meta-Analysis of Potential Impacts of Ocean Acidification on Marine Calcifiers From the Southern Ocean

2021 ◽  
Vol 8 ◽  
Author(s):  
Blanca Figuerola ◽  
Alyce M. Hancock ◽  
Narissa Bax ◽  
Vonda J. Cummings ◽  
Rachel Downey ◽  
...  
Keyword(s):  
Southern Ocean ◽  
Ocean Acidification ◽  
Industrial Revolution ◽  
Negative Impact ◽  
Meta Analysis ◽  
Mineralogical Composition ◽  
Critical Issue ◽  
Biological Traits ◽  
Response Variation ◽  
Species Specific

Understanding the vulnerability of marine calcifiers to ocean acidification is a critical issue, especially in the Southern Ocean (SO), which is likely to be the one of the first, and most severely affected regions. Since the industrial revolution, ~30% of anthropogenic CO2 has been absorbed by the global oceans. Average surface seawater pH levels have already decreased by 0.1 and are projected to decline by ~0.3 by the year 2100. This process, known as ocean acidification (OA), is shallowing the saturation horizon, which is the depth below which calcium carbonate (CaCO3) dissolves, likely increasing the vulnerability of many resident marine calcifiers to dissolution. The negative impact of OA may be seen first in species depositing more soluble CaCO3 mineral phases such as aragonite and high-Mg calcite (HMC). Ocean warming could further exacerbate the effects of OA in these particular species. Here we combine a review and a quantitative meta-analysis to provide an overview of the current state of knowledge about skeletal mineralogy of major taxonomic groups of SO marine calcifiers and to make projections about how OA might affect a broad range of SO taxa. We consider a species' geographic range, skeletal mineralogy, biological traits, and potential strategies to overcome OA. The meta-analysis of studies investigating the effects of the OA on a range of biological responses such as shell state, development and growth rate illustrates that the response variation is largely dependent on mineralogical composition. Species-specific responses due to mineralogical composition indicate that taxa with calcitic, aragonitic, and HMC skeletons, could be at greater risk to expected future carbonate chemistry alterations, and low-Mg calcite (LMC) species could be mostly resilient to these changes. Environmental and biological control on the calcification process and/or Mg content in calcite, biological traits, and physiological processes are also expected to influence species-specific responses.

scholarly journals Predicting potential impacts of ocean acidification on marine calcifiers from the Southern Ocean

2020 ◽  
Author(s):  
Blanca Figuerola ◽  
Alyce M. Hancock ◽  
Narissa Bax ◽  
Vonda Cummings ◽  
Rachel Downey ◽  
...  
Keyword(s):  
Southern Ocean ◽  
Ocean Acidification ◽  
Industrial Revolution ◽  
Negative Impact ◽  
Meta Analysis ◽  
Mineralogical Composition ◽  
Critical Issue ◽  
Biological Traits ◽  
Negative Effects ◽  
Species Specific

AbstractUnderstanding the vulnerability of marine calcifiers to ocean acidification is a critical issue, especially in the Southern Ocean (SO), which is likely to be the one of the first, and most severely affected regions. Since the industrial revolution, ~30% of anthropogenic CO2 has been absorbed by the oceans. Seawater pH levels have already decreased by 0.1 and are predicted to decline by ~ 0.3 by the year 2100. This process, known as ocean acidification (OA), is shallowing the saturation horizon, which is the depth below which calcium carbonate (CaCO3) dissolves, likely increasing the vulnerability of many marine calcifiers to dissolution. The negative impact of OA may be seen first in species depositing more soluble CaCO3 mineral phases such as aragonite and high-Mg calcite (HMC). These negative effects may become even exacerbated by increasing sea temperatures. Here we combine a review and a quantitative meta-analysis to provide an overview of the current state of knowledge about skeletal mineralogy of major taxonomic groups of SO marine calcifiers and to make predictions about how OA might affect different taxa. We consider their geographic range, skeletal mineralogy, biological traits and potential strategies to overcome OA. The meta-analysis of studies investigating the effects of the OA on a range of biological responses such as shell state, development and growth rate shows response variation depending on mineralogical composition. Species-specific responses due to mineralogical composition suggest taxa with calcitic, aragonitic and HMC skeletons may be more vulnerable to the expected carbonate chemistry alterations, and low magnesium calcite (LMC) species may be mostly resilient. Environmental and biological control on the calcification process and/or Mg content in calcite, biological traits and physiological processes are also expected to influence species specific responses.

scholarly journals Incidence of Oral Mucositis in Patients Undergoing Head and Neck Cancer Treatment: Systematic Review and Meta-Analysis

2021 ◽  
Vol 5 (1) ◽  
pp. 23
Author(s):  
Raquel Pacheco ◽  
Maria Alzira Cavacas ◽  
Paulo Mascarenhas ◽  
Pedro Oliveira ◽  
Carlos Zagalo
Keyword(s):  
Systematic Review ◽  
Head And Neck Cancer ◽  
Oral Health ◽  
Cancer Treatment ◽  
Head And Neck ◽  
Neck Cancer ◽  
Oral Mucositis ◽  
Negative Impact ◽  
Meta Analysis ◽  
Incidence Rates

This systematic review and meta-analysis aimed to assess the literature about the incidence of oral mucositis and its degrees (mild, moderate, and severe), in patients undergoing head and neck cancer treatment (radiotherapy, chemotherapy, and surgery). Addressing this issue is important since oral mucositis has a negative impact on oral health and significantly deteriorates the quality of life. Therefore, a multidisciplinary team, including dentists, should be involved in the treatment. The overall oral mucositis incidence was 89.4%. The global incidence for mild, moderate, and severe degrees were 16.8%, 34.5%, and 26.4%, respectively. The high incidence rates reported in this review point out the need for greater care in terms of the oral health of these patients.

scholarly journals Impact of Use of Gastric-Acid Suppressants and Oral Anti-Cancer Agents on Survival Outcomes: A Systematic Review and Meta-Analysis

Cancers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 998 ◽  
Author(s):  
Alice Indini ◽  
Fausto Petrelli ◽  
Gianluca Tomasello ◽  
Erika Rijavec ◽  
Antonio Facciorusso ◽  
...  
Keyword(s):  
Systematic Review ◽  
Gastric Acid ◽  
Solid Tumors ◽  
Fixed Effects ◽  
Negative Impact ◽  
Meta Analysis ◽  
Soft Tissue Sarcomas ◽  
Oral Chemotherapy ◽  
Survival Outcomes ◽  
Anti Cancer

We performed a systematic review and meta-analysis to evaluate the role of gastric acid suppressant use on outcomes of tyrosine kinase inhibitors (TKIs) and oral chemotherapy. We identified all research evaluating the effect of GAS (gastric acid suppressants) use on patients receiving oral chemotherapy or TKIs for solid tumors. The pooled hazard ratios (HRs) and 95% confidence interval (95%CI) for overall survival (OS) and progression-free survival (PFS) were calculated with a fixed-effects or a random effects model. The study population included n = 16 retrospective studies and 372,418 patients. The series concerned gastrointestinal tract tumors (n = 5 studies), renal cell carcinomas (RCC, n = 3 studies), non-small cell lung cancers (NSCLC, n = 5 studies), and soft tissue sarcomas or mixed histologies solid tumors in n = 3 studies. The pooled HRs for OS and PFS were 1.31 (95%CI: 1.20–1.43; p < 0.01) and 1.3 (95%CI 1.07–1.57; p < 0.01) for GAS and no GAS users, respectively. Only studies of EGFR (epidermal growth factor receptor) mutated NSCLC patients receiving TKIs and those with colorectal cancer receiving oral chemotherapy showed a significant correlation between GAS and poor survival. Our study supports the evidence of a possible negative impact of concomitant GAS therapy on survival outcomes of patients receiving oral anti-cancer drugs.

Impact of economic and financial crimes on economic growth in emerging and developing countries

2019 ◽  
Vol 26 (3) ◽  
pp. 910-920 ◽  
Author(s):  
Sani Abubakar Saddiq ◽  
Abu Sufian Abu Bakar
Keyword(s):  
Systematic Review ◽  
Developing Countries ◽  
Negative Impact ◽  
Meta Analysis ◽  
Eligibility Criteria ◽  
Content Type ◽  
Research Reporting ◽  
Financial Crimes ◽  
Emerging And Developing Countries ◽  
The Impact

Purpose The purpose of the study is to investigate the impact of economic and financial crimes on the economies of emerging and developing countries. Design/methodology/approach Preferred Reporting Items for Systematic review and Meta-Analysis (PRISMA) guidelines and meta-analysis of economics research reporting guidelines were used to conduct a quantitative synthesis of empirical evidence on the impact of economic and financial crimes in developing and emerging countries. Findings A total of 103 studies were searched, out of which 6 met the selection/eligibility criteria of this systematic review. The six selected studies indicated that economic and financial crimes have a negative impact in emerging and developing countries. Originality/value To the best knowledge of the authors, no published systematic review of the impact of economic and financial crimes in developing countries has been conducted to date.

Technological unemployment and the business model of sharing economy in conditions of digitalized economy

2021 ◽  
Vol 21 (1) ◽  
pp. 208-225
Author(s):  
Lyudmila Belova
Keyword(s):  
Business Model ◽  
Industrial Revolution ◽  
Negative Impact ◽  
Well Being ◽  
Sharing Economy ◽  
Technological Unemployment ◽  
The One ◽  
Development Paradigm ◽  
The Impact ◽  
Industrial Revolutions

The article traces the impact of innovation on employment and workers income during industrial revolutions. The aim of the study is to identify the business model that contributes to improving the well-being and reducing negative impact of innovative transformations on employees. To achieve this goal, we analyze: the conceptions of industrial revolutions; the “Engels pause”, which arose during the First Industrial Revolution as a “surge” in inequality due to the contradiction between productivity growth and profit, on the one hand, and the stagnation of workers’ real incomes, on the other; the effect of replacing manual labor with automated one; the problems of technological unemployment; the digital business model of sharing economy. The findings report conclusions concerning the change in economic development paradigm as a result of the replacement of classical consumption models by sharing economy business model, on the prospects of the sharing economy business model in the context of its ability to solve employment problems, overcome technological unemployment and increase employees’ income. The achieved results can be useful for policymakers and corporate structures that design innovative development strategies.

scholarly journals Use of Ash-and-Slag Wastes after Burning of Fine-Dispersed Coal-Washing Wastes

2018 ◽  
Vol 41 ◽  
pp. 01042
Author(s):  
Vasilii Murko ◽  
Veniamin Khyamyalyainen ◽  
Marina Baranova
Keyword(s):  
Power Plants ◽  
Building Materials ◽  
Negative Impact ◽  
Mineralogical Composition ◽  
Unburned Carbon ◽  
Crushed Rock ◽  
Low Carbon ◽  
Technological Parameters ◽  
Coal Fuel ◽  
Granulated Slag

Effective utilization of ash-and-slag waste generated by coalfired power plants can help significantly to reduce the negative impact on the environment and improve their economic performance. Studies have been made of the mineralogical composition of ash-and-slag wastes obtained after the combustion of water-coal fuel based on fine-dispersed coal-washing waste (filter cake) in a specially designed boiler with a vortex combustion system. The possibility of effective use of ash-and-slag wastes for the production of building materials, primarily mortar mixes, widely used for mining works on mine openings, laying the worked out space, etc. (high content of silicon oxide and aluminum oxide is combined with a low carbon content in other words a negligible unburned carbon loss). The optimum percentage ratio of the initial components of the filling mixture based on ash-and-slag wastes and crushed rock (granulated slag) has been established. The results of experimental tests of hardening tabs on the strength under uniaxial compression are presented. It has been established that a sample containing 18% of ash-and-slag wastes, 33% of a granulated slag and 19% of cement, corresponds to the required technological parameters for the strength and cement content.

scholarly journals Impact of Electronic Monitoring on Employees: A Meta-Analysis

2021 ◽  
Author(s):  
Rudolf Siegel ◽  
Cornelius J. König ◽  
Veronika Lazar
Keyword(s):  
Job Satisfaction ◽  
Electronic Monitoring ◽  
Negative Impact ◽  
Meta Analysis ◽  
Well Being ◽  
Negative Effect ◽  
And Performance ◽  
Relationship Of ◽  
Positive Effect ◽  
Small Positive Effect

Electronic monitoring is more and more widespread and affects many employees around the globe. The current meta analysis collected data of 59 independent samples (with 223 effect sizes) to estimate the effect of electronic monitoring on job satisfaction, stress, and performance. A random-effects model indicated a small negative effect of monitoring on job satisfaction, r=-.09, and a small positive effect on stress, r=.12. There was no relationship with performance, r=-.01. Even if the effects of monitoring on job satisfaction and stress are small, taking the large number of employees who are monitored for several hours a day into account, these effects may have a severe and negative impact on employees’ well-being. Performance maintenance is the main justification for the use of electronic monitoring, but the non-existing relationship of monitoring with performance questions the validity of this justification.

scholarly journals STUDENT-CENTERED LEARNING IN RELATION TO CLASS PERFORMANCES AND SOFT SKILLS: A META-ANALYSIS AND SYSTEMATIC REVIEW

2018 ◽  
Vol 7 (2) ◽  
pp. 93
Author(s):  
Elisabeth Rukmini ◽  
Cindy Cindy ◽  
Pricillia Tanoto
Keyword(s):  
Systematic Review ◽  
Communication Skills ◽  
Negative Impact ◽  
Soft Skills ◽  
Meta Analysis ◽  
Team Work ◽  
Learning Motivation ◽  
Soft Skill ◽  
Student Centered ◽  
Student Centered Learning

Background: Studies showed that SCL improved quality of medical education through knowledge acquisition, class performance, students’ attitude and soft skills. Although research about SCL and its impact has been widely known, overall correlation of SCL to the class performances has not yet been established. Strong correlation between SCL to class performances would serve the purpose of teaching and learning and more importantly would answer the skepticism of institution or faculty members in implementing SCL. In addition, learning through systematic review of others’ studies, how SCL influenced soft skill aspects would be benefited for medical educators. Soft skills such as learning motivation, communication skills, and teamwork may lead educators to the favor of SCL approaches. This review was to find the correlation of student-centered learning to the students’ performances and soft skill aspects in medical education.Method: To find the correlation of the SCL and class performances, we used meta-analysis. We also performed a systematic review to qualitatively find the relationship between SCL and other aspects, such as teamwork, communication skills, and learning motivation. Literatures were filtered from databases of: Proquest, Springerlink, Biomed Central (BMC) open, BMJ open, and Google Scholar. The inclusion criteria were published empirical articles (2000-2013) reported SCL’s effect on class performances or other aspects (learning motivation, teamwork, communication skills). We utilized PRISMA protocol to filter the inclusion articles. By reading abstracts and further snowballing searching, we found 12 articles for the meta-analysis and 33 articles for the systematic review.                                                                 Results: Among 12 articles of the meta-analysis, 9 articles showed positive correlation between SCL and class performances. Three studies reported that SCL had no effect on the class performances. None of the articles reported any negative impact. We utilized the Comprehensive Meta-Analysis software to analyze the data and found r = 0.46 and 95% CI: 0.32 - 0.57. It showed a statistically significant correlation between SCL and class performances. On the systematic review, we found that SCL improved communication skills, team work, and learning motivation.Conclusion: From the meta-analysis we found that SCL improved class performances about 46%. It was showed that SCL methods were superior in improving soft skills such as communication skills, teamwork, and learning motivation.                

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