Introduction: SARS-COV-2, the novel severe acute respiratory syndrome coronavirus, has become a life-threatening public health crisis. This kind of pandemic is frightening the world with clinical, psychological, and emotional distress and leading to an economic slowdown. To explore any association between the ABO blood type and the susceptibility to coronavirus disease 2019 (COVID-19), we compared ABO blood group distribution among 671 COVID-19 patients with the local control population. Methodology: The study was conducted in Blood Bank Hospital in Erbil, Kurdistan Region, Iraq. The ABO-typed blood samples were obtained from 671 patients infected with SARS-CoV-2 between February and June 2021. Results: Our results demonstrated that the risk of SARS-COV-2 was higher for patients with blood group A than those with not-A blood type patients. Of the 671 patients with COVID-19, 301 had type A (44.86%), 232 had type B (34.58%), 53 had type AB blood (7.9%), and 85 had type O (12.67%). Conclusions: We concluded that the Rh-negative blood type has a protective effect on SARS-COV-2. Our results also indicate that the decreased susceptibility of individuals with blood group O and the increased susceptibility of individuals with blood group A to COVID-19 could be linked to the presence of natural anti-blood group antibodies, particularly anti-A antibody, in the blood. However, there might be other mechanisms that require further study.
Biogas and fuel ethanol are renewable energy sources, can be produced from complex organic materials that are decomposed by microorganisms in the anaerobic digestion method. Potato peels (PPs) and mixed Lolium perenne and Dactylis glomerata grasses were assessed as a potential substrate for biomethanation in a batch method under mesophilic condition (35°C) and ethanol fermentation. The first approach of this work was focused on pretreatment of PPs using acidic and enzymatic hydrolysis to produce biogas and ethanol fermentation using Saccharomyces cerevisiae and Safbrew S-33. These experiments proved that enzymatic hydrolysis produced 1.2 g/L of ethanol involved 115 h of fermentation and 665 ml/h of biogas after 451 h of biomethanation, this was more than the outcomes of acidic treatment. The second approach was concentrated on ability of biogas and ethanol production from mixed grasses treated with different acid concentrations that produced 0.16 g/L ethanol over 8 days of fermentation and 500 ml/h of biogas after 13 days of methanation technique. In general, the results pointed out that PPs and combined grasses can be used as potential substrates with raw materials for biogas and ethanol production.
The world is currently facing a scarcity of energy resources in the electricity generation sector. The current pattern of electricity generation has brought harm to the environment. Fuel cell provides a huge potential in reducing the negative environmental impacts. Malaysia as a tropical country has abundant sources of biogas production that can be fed into the fuel to produce electricity and water. The paper aimed to identify the environmental impact towards the consumption of biogas feeding into fuel cells for electricity generation. The result showed that in this modelling of system boundary, the greenhouse gas emissions were high due to large contributions from the transportation and storage processes. Hopefully, the outcome from this study could help future researchers or stakeholders in making decisions to design fuel cells for electricity generation with minimum environmental impact contribution.
Malaysia's manufacturing and transportation sectors are largely reliant on fossil fuels. In 2009, fossil fuels such as natural gas, coal, diesel oil, and palm oil were used to produce 94.5 percent of electricity. Concerns about energy security, crude oil price volatility, and climate change are all driving major changes in how energy, specifically electricity, is produced, distributed, and consumed. In this regard, renewable energy resources are becoming more appealing in Malaysia for long-term energy growth. There is because Malaysia has an abundance of renewable energy sources, the most important of which are biomass and solar. This article presents the potential use of pineapple wastes as one of renewable sources of energy (biomass) in Malaysia and their impacts towards environment.
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