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SARS-CoV-2 is the virus responsible for the disease that is known as COVID-19. While there have been numerous studies detailing the survival rates of SARS-CoV-2 on various materials, there are currently no published data regarding whether this virus is stable on standard military uniforms. Consequently, there are no standard operating procedures for washing uniforms once exposed to the virus. This study aimed to determine whether SARS-CoV-2 could be removed from Army combat uniform material by washing with a commercially available detergent and tap water. Washing the fabric with detergent followed by a rinse step with tap water effectively removes detectable viral particles. Importantly, it was found that washing with hot water alone was not effective. Therefore, it is recommended that military personnel wash their uniforms with detergent and water as soon as possible after exposure to SARS-CoV-2; hot water should not be used as a substitute for detergent.
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COVID-19 , Military Personnel , Humans , SARS-CoV-2 , COVID-19/prevention & control , Detergents/therapeutic use , WaterABSTRACT
The Swedish Rheumatism Association, our umbrella Organization: In Sweden, there are approximately one million people with different rheumatic diseases, and about 1400 of them have a myositis diagnosis. In addition to several local associations, there are 3 nationwide diagnostic groups for systemic inflammatory diseases: Working group for systemic lupus erythematosus (SLE), Working group for Systemic Sclerosis and Working group for Myositis. Goals and vision: We form opinion and influence politicians and decision-makers at all levels in issues that are important to us, such as access to rapid care and opportunities for rehabilitation. Knowledge and Education: We educate: * Representatives who can share knowledge based on their own experience and to provide support and help for people living with rheumatic disease. * Volunteers for patient schools. * Patient Research Partners since 2008. Research and fundings: : * We are the single largest private funder of Swedish rheumatology research. * Patient Research Partners should become obvious members in research projects. Working group for Myositis was established in 2020 and most of our activities have been on-line. The number of members is growing as we spread out the information. We will continue with our on-line events and together with our experts arrange our first patient conference in 2022. We are a member of the Swedish Rare Disease Association and European Network ERN ReCONNET. We have now three Patient Research Partners with myositis and we will continue to participate in international research projects, such as IMACS, Rehabilitation & exercise SIG. Our mission is to give support to myositis patients and their families, share knowledge of their disease, facilitate meeting with others with the same diagnosis for an exchange of experiences or just for fun. Our goals are to: * Inform through newsletters, patient meetings, website and webcasts. * Arrange lectures by myositis experts. * Arrange annual patient conference. * Raise awareness for the disease in society and inform healthcare professionals within primary care units. * Contribute to that all patients receives equally good care all over the country. * Inform about research results, ongoing studies and update information on new treatments and drugs. * Contribute to that all newly diagnosed patients have access to patient education and written information material about myositis. * Contribute for opportunities for rehabilitation, such as training in warm water pools and access to rehabilitation facilities in warm climate. * Collaborate with the Youth organization of the Swedish Rheumatism Association for Juvenile Dermatomyositis and provide support for parents, children and adolescents. * Collaborate with the myositis organizations in other countries. Our Webinars: The experts who have shared their knowledge on our webinars are: Ingrid Lundberg, Professor;Maryam Dastmalchi, MD, Rheumatologist;Helene Alexanderson, PhD, Associate professor, PT;Malin Regardt, PhD, OT;Balsam Hanna, Specialist Rheumatology;Dag Leonard, MD, Rheumatologist;Antonella Notarnicola, MD, Rheumatologist;Fabricio Espinosa, Rheumatologist, PhD candidate;Kristofer Andreasson, PT, PhD candidate;Jonatan Sjogren, OT;Lars Nordelv, CBT Therapist, also a patient;Helena Andersson, MD, Rheumatologist;Hanna Brauner, PhD, Dermatologist. Among the topics our webinars have covered so far are: Diagnostic criteria of myositis, new research findings, existing treatments and ongoing studies, Physical activity and its effects on depression, safety of high-intensity interval training, Occupational therapy, Patient Reported Outcomes, Myositis Associated Antibodies and how to deal with anxiety, cardiac involvement and osteoporosis in myositis, clinical findings and treatments for Antisynthetase syndrome skin involvement in Dermatomyositis, Covid-19 and vaccination.
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The COVID-19 pandemic has impacted in the lifestyle of people: it has changed habits, mobility and working dynamics, which has led to a rise in basic supply consumption in households. This paper aims to analyse the change in hot domestic water consumption during COVID-19 compared with pre-pandemic periods, in volume terms and the pattern change. For this purpose, an own-developed stochastic model to characterize domestic hot water use is modified to different restriction scenarios to adapt it to COVID-19 pandemic conditions. To validate the model, Urban Water consumption changes during 2020 in the cities of El Prat de Llobregat and Barberà del Vallès are analyzed in order to relate total use of water in residential homes and domestic hot water consumption. The mean increase for DHW found is around 7%. For good measure, daily water pattern consumption results increased from 10h to 13h and from 16h to 19h in this scenario, which is consistent with the literature review. Both results, volumetric and pattern, are considered valid. © 2022 by the authors. Licensee AEIPRO, Spain.
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Legionnaires' disease (LD) is a type of severe pneumonia that mainly caused by bacteria of the genus Legionella. LD bacteria reside in the water systems of facilities where lack of water exchange or flow plays a crucial role in enhancing bacterial growth. The under-recognition of the dangers of Legionella along with easing of Coronavirus disease 2019 (COVID-19) lockdown restrictions and global reopening, pose a potential increased risk of developing LD. Various Legionella species can lead to legionellosis infections, including LD and Pontiac fever. Legionellosis cases is generally found in natural or artificial aquatic environments such as cooling towers, hot water tanks, or air conditioning. The bacteria elude the host's immune responses by various strategies, including releasing effector proteins. Thus, this review provides insight into the microbiology, epidemiology, and host cell biology of L. pneumophila, as well as an emphasis on the bacterial novel survival strategies of L. pneumophila. Also, suggests taking intensive actions towards closed buildings as a potential source of bacterial infection.
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Background: Palytoxin poisoning is an uncommon exposure in the US, and is most frequently encountered amongst hobbiests and professionals in the aquarium industry. The toxin is produced by the microalgae Ostreopsis as well as the coral Palythoa toxica. Discovered in Hawaii, the name limu-make-o-Hana translates to "seaweed of death from Hana." Palytoxin interrupts Na+/ K+ ATPase pump, resulting in widespread cellular dysfunction. Persons are at highest risk when cleaning a fish tank housing the coral that produces palytoxin, resulting in cutaneous or inhalational exposure. We present a case of palytoxin inhalational exposure with computed tomography (CT) imaging. Case report: A 41-year-old male presented to the emergency department (ED) with dyspnea, cough, and wheezing after cleaning his saltwater fish tank. He reported that he maintains Zoanthid corals in his home saltwater fish tank and typically wears personal protective equipment when cleaning the tank. He had taken off his mask directly after using hot water to clean the tank, and quickly developed shortness of breath. He contacted Poison Control and was instructed to take loratadine with initial improvement in his symptoms. He then developed decreased appetite, nausea, and chills. The following day, in addition to these symptoms, he developed a fever of 102.5 degreeF and an oxygen saturation of 88% measured with an at-home pulse oximeter. He then proceeded to the ED where he was found to be hypoxic to 91% on room air, tachycardic to 120 bpm, hypotensive to 93/ 70mmHg, febrile to 100.9 degreeF and tachypneic at a respiratory rate of 30. Physical exam revealed clear lung sounds. Application of supplemental oxygen at 2 L resulted in improvement in his oxygen saturation and his hypotension and tachycardia responded to intravenous fluids. Significant laboratory results included WBC count of 20.4 with bands of 14%, elevated lactate of 2.4mmol/L, elevated D-dimer of 0.48 mug/mL and a negative COVID PCR test. CTA thorax revealed patchy ground-glass opacities in the bilateral upper and lower lobes with mosaicism. The patient received doxycycline in addition to broad spectrum antibiotics due to concern for inhalational marine toxicity. He was also started on 60mg prednisone, inhaled steroids, and bronchodilators for symptomatic treatment, with improvement in his symptoms. During his hospitalization, a respiratory viral panel was negative for common viruses associated with atypical pneumonia including influenza, coronavirus, metapneumovirus, rhinovirus, enterovirus, adenovirus, parainfluenza, bocavirus, Chlamydophila pneumoniae, and Mycoplasma pneumonia. His dyspnea gradually improved and he was weaned off supplemental oxygen prior to discharge home on hospital day 2. Discussion(s): It is unclear what changes are expected on thoracic imaging in patients with inhalational palytoxin exposure. Chest radiographs in two previous cases displayed scattered infiltrates, and a chest CT in another case showed pleural based consolidations. The ground-glass mosaicism suggests that a more diffuse reactive airway process after an inhalational palytoxin insult. Conclusion(s): Patients with inhalational palytoxin exposure may be found to have reactive airway symptoms along with ground glass opacities with mosaicism on CT imaging.
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In recent years, one of the key postulates in the European Union’s policy has become the development of renewable energy sources. In order to achieve the desired synergy effect, the idea of combining two selected sources of energy appeared. This article presents a technical and economic analysis of a hybrid connection of a ground source heat pump with a photovoltaic installation. Taking into account the heat demand of the building, a ground heat pump with a catalog nominal heating power of 25 kW was selected. This article presents the problem of the economic profitability of using a hybrid combination of a heat pump and photovoltaic panels in domestic hot water and central heating systems. The justification for the use of such heat sources in these installations is due to global trends and the gradual departure from conventional energy sources such as oil or gas boilers. This paper presents the economic and ecological results of using the pump heat connected together with photovoltaic panels. In the economic analysis, with the assumed installation costs related to the use of the considered heat pump and PV, two parameters commonly used in the investment analysis (static and dynamic) were used, namely, the simple payback period and the net present value of the investment. For the adopted assumptions, the usable area of the facility and the number of years of use were indicated, at which the investment in question is competitive with other alternative investment interest methods and will start to bring tangible benefits. The performed analysis also has measurable environmental benefits in the form of a reduction in carbon dioxide emissions at the level of 2893 kg/year into the atmosphere. The presented solution will help future investors understand the investment profitability mechanism for their households.
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Aim: To study the efficacy and clinical safety of Prishniparni ghanavati in Gestational Diabetes Mellitus (Prameha in Garbhini). Methodology: The study was conducted on 20 patients, Prishniparni ghanavati 500 mg twice daily, with warm water. This study was conducted at Bharati Ayurveda hospital during 2020-2022. It was a randomized, open-control trial study. Patients with raised DIPSI (Diabetes in pregnancy societies of India), i.e., above 140 mg/dl and below 200 mg/dl, were included in this study. Results: A total of 31 patients were evaluated in this study. Out of which, 30 were recruited and 20 patients completed. A total of two patients dropped out due to factors like the covid-19 pandemic, irregular follow-up, etc. The herbal medicine was tolerated well in trial group patients. Conclusions: In this study, it is proved that prishniparni could be the choice of the herb in these cases. Prishniparni proved effective in managing GDM if the BSL is less than 200. All patients well tolerated the herb. The side effects are not observed in this study.
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Methods: A cross-sectional study was conducted by sending a survey developed using SurveyMonkey. Local IRB approved the study. Responding to the survey was implied as providing consent. The survey was sent to all ayurveda professionals practicing in the United States. The list of professionals were obtained from the National Ayurveda Medical Association and through personal contacts of the principal investigator. The survey was open for 45 days and reminders were sent twice to the potential participants. Results: Eighty eight ayurvedic professionals completed the survey. Majority were females from California and belonged to Ayurveda Practitioner category and practiced mostly parttime. Ayurveda counselors and Ayurveda doctors (India based education) were the other categories of professionals, who also responded to the survey. The respondents reported that they adopted telehealth to continue their practice during the closures, but still majority reported that there was an economic impact of COVID-19 on their practices. Health promotion was the predominant type of service provided by these professionals. The methods included diet and lifestyle advices that incorporated dosha based diet and yoga and meditation practices. Additionally, they also provided some classical ayurveda formulas and simple herbal teas such as coriander tea and hot water to prevent easy susceptibility to viral infections. An important advice included a specific dosha based individual daily routine to improve general and mental health. Background: To understand the ayurveda practice patterns in the United States during COVID-19 Conclusion: Ayurveda, the oldest Indian System of Medicine may be a useful natural health care systemthat can be used for health promotion during a pandemic. The self-care practices do provide patient empowerment.
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Medical waste contains biohazard, such as dry medical waste from the Centre of Public Health Services (PUSKESMAS) should be burning out, especially in the pandemic of covid 19. One of the possible solution is burning the waste by using incinerator. Basic concept of incinerator is controlled high temperature combustion, thus it should be perfect condition to burnt out the hazardous waste. Heat energy that exposed while incinerator operated should having high potency to be used for other purposes such as water heater and carbonization process. This research aims to develop an incinerator which can be used not only as high temperature burner (as incinerator’s main function), but also for water heater system and carbonization process, in the same time. The incinerator designed as mini portable incinerator since it will be used in a center of public health services (PUSKESMAS). Both of hot water and charcoal produced while incinerator operation can be used for sanitation purposes in the PUSKESMAS itself. Combustion process temperatures, smoke quality, safety factor, and energy utilities are the parameters which were determined as incinerator performance. Some design improvement has been done to the original design by Pradipta and Agustina [1] in order to improve the incinerator performance. The latest design performance is showing that combustion temperature successfully increased up to 980 °C for combustion rate of 9 kg waste/hour. Utilization of heat energy produced by combustion process inside the chamber has been successfully produce 2-2,5 kg of good quality coconut shell charcoal and hot water of 83 °C at 6 lt/minute flow rate.
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Major depression disorder (MDD) has become a common life-threatening disorder. Despite the number of studies and the introduced antidepressants, MDD remains a major global health issue. Carthamus tinctorius (safflower) is traditionally used for food and medical purposes. This study investigated the chemical profile and the antidepressant-like effect of the Carthamus tincto-rius hot water extract in male mice and its mechanism using a transcriptomic analysis. The antidepressant effect of hot water extract (50 mg/kg and 150 mg/kg) was investigated in mice versus the untreated group (saline) and positive control group (fluoxetine 10 mg/kg). Hippocampus transcriptome changes were investigated to understand the Carthamus tinctorius mechanism of action. The GC-MS analysis of Carthamus tinctorius showed that hot water extract yielded the highest amount of oleamide as the most active ingredient. Neuro-behavioral tests demonstrated that the safflower treatment significantly reduced immobility time in TST and FST and improved performance in the YMSAT compared to the control group. RNA-seq analysis revealed a significant differential gene expression pattern in several genes such as Ube2j2, Ncor1, Tuba1c, Grik1, Msmo1, and Casp9 related to MDD regulation in 50 mg/kg safflower treatment as compared to untreated and fluoxetine-treated groups. Our findings demonstrated the antidepressant-like effect of safflower hot water extract and its bioactive ingredient oleamide on mice, validated by a significantly shortened immobility time in TST and FST and an increase in the percentage of spontaneous alternation.
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Background: After the first case of COVID-19 being announced in China in December 2019, various diagnostic technologies have been developed at unprecedented pace with the aim of providing a basis for accurate clinical intervention. However, some assays including CRISPR-based diagnostics and loop-mediated isothermal amplification (LAMP) have been less explored. As new COVID-19 technologies emerge, there is need for them to be assessed, validated and improved upon. Moreover, there is paucity of data on the essential factors governing the selection of an appropriate diagnostic approach within the correct timeframe. Myths and origin of SARS-CoV-2 remain to be controversial. Consequently, this review aims at exploring the current COVID-19 diagnostic technologies, performance evaluation, principles, suitability, specificity, sensitivity, successes and challenges of the technologies for laboratory and bedside testing. Main Body: To date, there exist more publications on COVID-19 diagnostics as compared to the Zika virus. The SARS-CoV-2 virus genome profiles were readily available by 31st of December 2019. This was attributed to the fast-paced sharing of the epidemiological and diagnostics data of COVID-19. Timely profiling of the virus genome accelerated the development of diagnostic technologies. Furthermore, the rapid publication of studies that evaluated several diagnostic methods available provided baseline information on how the various technologies work and paved way for development of novel technologies. Conclusion: Up to date, RT-PCR is the most preferred as compared to the other assays. This is despite the repeated false negatives reported in many of the study findings. Considering that COVID-19 has caused devastating effects on the economy, healthcare systems, agriculture and culture, timely and accurate detection of the virus is paramount in the provision of targeted therapy hence reducing chances of drug resistance, increased treatment costs and morbidity. However, information on the origin of SARS-CoV-2 still remains elusive. Furthermore, knowledge and perception of the patients toward management of SARS-CoV-2 are also paramount to proper diagnosis and management of the pandemic. Future implications of the misperceptions are that they may lead to increased non-compliance to SARS-CoV-2-related World Health Organization (WHO) policies and guidelines.
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Evidence shows that people have a major impact on building performance. Occupants’ impact is especially important in social housing, where their occupants may present greater vulnerabilities, and their needs are not always considered. This study aims to analyse the socio-demographic influence in social rental housing concerning hygrothermal comfort and energy consumption in a case study located in Vitoria, Spain during the first 4-month period of 2020 and 2021 (during and after COVID-19 lockdown). An innovative data management system is included, where the users and administration can see in real-time the temperature and consumption in the dwellings. A 2-phase method has been applied;phase 1 is associated with outdoor climate conditions, building properties and social profile. Phase 2 determined the results in energy consumption, indoor hygrothermal comfort and occupant energy-use pattern. The results show that the comfort levels and energy consumption vary according to the analysed social profiles, as well as the heating activation periods and domestic hot water system usage. In conclusion, socio-demographic characteristics of social housing households influence the hygrothermal comfort of their dwellings, occupants’ behaviour and heating and domestic hot water energy consumption.
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The purpose of this research is to provide evidence-based natural therapies and foods that will enhance the immune system to fight the virus SARS CoV-2 and cancer. Minority populations that include Black African Americans and Hispanics are experiencing higher mortality rates due to both socioeconomic and lifestyle factors in the US and globally. Successful lessons learned from controlling previous 1918 pandemic flu will be discussed. Hypotheses: We hypothesize that targeting lifestyle factors such as diet, exercise, and hydrothermal therapy that enhance the immune system can effectively control and reduce the risk to COVID-19 disease and cancer simultaneously. The target cells for the SARS CoV-2 virus contain the ACE2 and TMPRSS2 receptors which serve as portals of entry. They are expressed throughout the body including the nose, lungs, heart, bladder, pancreas, kidneys and brain found on the epithelial and vascular tissue cells of these organs. Covid-19 affects multiple organs in the body and disrupts the innate immune system, especially the natural killer cells, monocytes, and neutrophils. Studies have shown that countries where BCG was used have less than 10% of COVID-19 cases and countries that do not use the BCG vaccine such as the US and Italy had high cases. It was also seen that people who had higher natural killer cell activity had 100% survival rates. Enhancing the innate immune system through natural therapies has shown to enhance immune cells to fight COVID-19 as well as cancer and destroy it. Methodology: Our research is exploratory and is based on recently published literature on COVID-19 diseases. The following databases were searched: CINAHL, Web of Science, PubMed, EBSCOHost, Google Scholar, Academic Search Complete, AccessMedicine, MedlinePlus, Nutrition Care Manuel, JSTOR and Publons. Results: During the Spanish flu pandemic death rates of those who received the best medical care was 6.7% compared with those who received hydrotherapy at 1.34%. Hydrotherapy will increase the body temperature and stimulate the activity of the immune cells, which can kill the viruses. Increasing the body temperature to 39.5 degrees centigrade was shown to kill the virus. Following the hot water bath with cold treatment was shown to be even more effective. Many foods have been found to enhance the immune system and to fight the flu virus. Foods such as blueberries, garlic, and probiotics were shown to improve natural killer activity. Vitamin C, Vitamin D, Zinc, and selenium play a role in immunity. Foods rich in antioxidants such as kale, blueberries, red bell peppers, and all citrus fruits also help enhance the immune system. During the 1918 flu pandemic that received hydrotherapy and other natural remedies, out of the 120 students and staff exposed, there were 90 patients, none very sick, and there were no deaths. Natural remedies used in the Spanish flu pandemic and should be instituted to help enhance immunity and lessen the deadly impact of COVID-19 cancer patients.
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Energy consumption is steadily increasing with the ever-growing population, leading to a rise in global warming. Building energy consumption is one of the major sources of global warming, which can be controlled with renewable energy installations. This paper deals with an advanced evacuated hybrid solar photovoltaic–thermal collector (PVT) for simultaneous production of electricity and domestic hot water (DHW) with lower carbon emissions. Most PVT projects focus on increasing electricity production by cooling the photovoltaic (PV). However, in this research, increasing thermal efficiency is investigated through vacuum glass tube encapsulation. The required area for conventional unglazed PVT systems varies between 1.6–2 times of solar thermal collectors for similar thermal output. In the case of encapsulation, the required area can decrease by minimizing convective losses from the system. Surprisingly, the electrical efficiency was not decreased by encapsulating the PVT system. The performance of evacuated PVT is compared to glazed and unglazed PVTs, and the result shows a 40% increase in thermal performance with the proposed system. All three systems are simulated in ANSYS 18.1 (Canonsburg, PA, USA) at different mass flow rates and solar irradiance.
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Introduction: The 2019-2021 SARS-2 Pandemic has created a number of challenges for healthcare systems globally. In March 2020, the UK NHS looked about to be overwhelmed with the number of patients requiring hospitalisation and intensive care management. The decision was made to create a number of temporary facilities called 'Nightingale Hospitals' in exhibition and conference centres around the UK. The London facility was designed as a 4000 bedded Intensive Care Unit (ICU). This paper describes the challenges in designing, building and running an ICU in an exhibition centre. Objectives: To describe the design process for a hospital in an exhibition centre. To discuss the challenges experienced during the building process. To describe the challenges faced with staffing such a hospital. To discuss areas in which risk assessments had to be made and practices modified to mitigate suboptimal conditions. Methods: NHS Designers and Military planners worked in conjunction with the Infection Prevention and Control Team (IPCT) to work with what was available. The whole of the clinical area was deemed to be an Aerosol-generating Procedure (AGP) zone. No oxygen supplies or hot water, minimal access to cold water, almost no drainage and a lack of physical spaces in which to carry out many of the necessary procedures were amongst the challenges faced and were overcome either by design or by changes to optimal practices through mitigation measures. The IPCT had key role to play in ensuring staff and patient safety, including training, stock management of Personal Protective Equipment (PPE) and donning and doffing procedures. Results: The London Nightingale Hospital became a fully functioning ICU within 10 days of the build commencing and the first patients were admitted within a few days. Thankfully it was only sparingly used as the national lockdown had an effect. In all, 72 patients were admitted with a survival rate of 63%, which was comparable with other established ICUs in London. Transmission rates of COVID-19 in staff were very low in those working clinically. The hospital was closed in June 2020 but reopened in January 2021 in a different guise (rehabilitation) with a smaller number of beds (300) but better facilities as a result of the learning from the first iteration. Conclusion: A temporary hospital built in an exhibition centre successfully managed a number of ICU patients. Lessons learned will shape future planning should this type of facility be required again.
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OBJECTIVE: To assess facts and myths of the Coronavirus (Covid-19) among patients in tertiary care hospital Karachi, Pakistan. METHODOLOGY: A descriptive study was carried out at Out Patients Department from October 2020 to February 2021 in Dow hospital Karachi. A total of 200 participants were recruited from those who came outpatient department for their follow-up and whose age was>18 years, using the non-probability purposive method. Exclusion criteria of the study involved those patients who were not willing and had any history of serious illness. Data was collected through a questionnaire, which has 02 parts. 1st part is about demographic information, and 2nd part includes 23 items (facts=12 items and myths=11 items) related to realities and misconceptions of Coronavirus. SPSS 21 was used for data entry and data analysis. RESULTS: Out of 200 participants, 136(68%) were unaware of facts, the highest percentage 22(16.2%) about the age and comorbidities, 20 (14.7%) social distance, and 18 (13.2%) wearing a mask. While: 159 (79.5%) had myths, the highest prevalent myths were about conspiracy 22(13.8%), home remedies 26 (16.3%), and warm water 21(13.2%).A majority of the participant’s (32.0%) age lies between 31 to 40 years and, male (71.0%), married (64.0%), Post-graduated (63.0%), own business (32%), income lies between 16000-30000 and Sindhi culture(61.5%). CONCLUSION: Present study highlighted, a vast majority were not aware of the facts and myths of Covid-19.For instance: facts about old age and co-morbidities, social distance, wearing mask, and myths regarding conspiracy, home remedies, and warm water.
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A major challenge in the operation of water heating systems lies in the highly stochastic nature of occupant behavior in hot water use, which varies over different buildings and can change over the time. However, the current operational strategies of water heating systems are detached from occupant behavior, and follow a conservative and energy intensive approach to ensure the availability of hot water any time it is demanded. This paper proposes a Reinforcement learning-based control framework which can learn and adapt to the occupant behavior of each specific building and make a balance between energy use, occupant comfort and water hygiene. The proposed framework is compared to the conventional approach using the real-world measurements of hot water use behavior in a single family residential building. Although the monitoring campaign has been executed during home lockdown due to COVID-19, when the occupants exhibited a very different schedule and water use related behavior, the proposed framework has learned the occupant behavior over a relatively short period of 8 weeks and provided 24.5% energy use reduction over the conventional approach, while preserving occupant comfort and water hygiene. © Content from this work may be used under the terms of the Creative Commons Attribution 3.0 Licence.
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COVID-19 made considerable changes in the lifestyle of people, which have led to a rise in energy use in homes. So, this study investigated the relationship between COVID-19 and domestic hot water demands. For this purpose, a nondimensional and principal component analysis were conducted to find out the influencing factors using demand data before and after COVID-19 from our study site. Analysis showed that the COVID-19 outbreak affected the daily peak time and the amount of domestic hot water usage, the active case number of COVID-19 was a good indicator for correlating the changes in hot water demand and patterns. Based on this, a machine learning model with an artificial neural network was developed to predict hot water demand depending on the severity of COVID-19 and the relevant correlation was also derived. The model analysis showed that the increase in the number of active cases in the region affected the hot water demand increased at a certain rate and the maximum demand peak in morning during weekdays and weekends decreased. Furthermore, if the number of active cases reached more than 4000, the peak in morning moved to afternoon so that the energy use patterns of weekdays and weekends are assimilated.
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The COVID-19 pandemic hit societies in full force in 2020 and compelled people all around the world to change their lifestyle. The time spent at home significantly surged during the pandemic and this change in occupancy can have a direct impact on building energy consumption. COVID-19 lockdowns also accelerated the transition towards telework, a trend that many expect to last. Changes in energy consumption under lockdown is thus a valuable asset to forecast how energy could be consumed in buildings in the future. Here, we aim to quantify the impacts of the COVID-19 lockdown on the energy consumption (electricity, hot water and space heating) in residential buildings by answering these two questions: (i) Did the lockdown lead to changes in total energy consumption?, and (ii) Did the lockdown lead to changes in consumption patterns (i.e. time of the day at which energy is consumed)? To do so, we compared the energy consumption measured in a 40-dwelling social housing building located in Quebec City (Canada) during four months of lockdown to those of the months that preceded the lockdown. It is found that consumption patterns for electricity and hot water changed for the first two months of the lockdown, when the most intensive lockdown measures were applied. Overall consumption slightly increased for these two energy expenditures, but the more important change was that consumption occurred throughout the day instead of being concentrated in the evening as observed before the lockdown. Results shed light on the impact of lockdown on energy bills for consumers and on how energy utilities might be solicited during this kind of episode.
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PURPOSE: To clarify the relationship between daily hot water bathing (HWB) at home and glycemic control in middle-aged and elderly ambulatory patients with type 2 diabetes mellitus (T2DM). METHODS: We defined hemoglobin A1c (HbA1c) as the main outcome. We set 7.0% based on the mean value of the dependent variable as the cut-off point for analysis. Frequency of HWB was an explanatory variable. A two-sample t-test was used to compare between groups with continuous variables. Multiple logistic regression analysis was performed for frequency, adjusted age, sex, BMI, T2DM duration (Model 1), and other confounding factors (Model 2). Odds ratio (OR) and 95% confidence interval (95% CI) were calculated. RESULTS: Among 838 patients, there was a significant difference (p<0.001) in age between males (n=528, 62.8±8.7 years) and females (n=310, 65.0±8.1 years). In Model 1, compared with participants who used HWB more than seven times a week, those with poorly controlled HbA1c were significantly associated with low frequency of HWB: four to six times a week (OR 1.32, 95% CI 0.87-1.99) and less than three times a week (OR 1.43, 95% CI 0.98-2.10); p-value for overall trend was 0.041. In Model 2, p-value for overall trend was 0.138. CONCLUSION: A higher frequency of HWB was moderately associated with a decreased risk of poor glycemic control in middle-aged and elderly ambulatory patients with T2DM.