Breaking News
December 16, 2018 - Social stigma contributes to poor mental health in the autistic community
December 16, 2018 - Multidisciplinary team successfully performs complex surgery on patient suffering from enlarged skull
December 16, 2018 - Experts analyze data that can guide antidepressant discontinuation
December 16, 2018 - Menlo Therapeutics’ Successful Phase 2 Clinical Trial of Serlopitant Demonstrates Reduction of Pruritus Associated with Psoriasis
December 16, 2018 - Siblings of children with autism or ADHD are at elevated risk for both disorders
December 16, 2018 - New project aims to understand why and how metabolic disorders develop in patients
December 16, 2018 - Diets containing GM maize have no harmful effects on health or metabolism of rats
December 16, 2018 - Are doctors and teachers confusing immaturity and attention deficit?
December 16, 2018 - Hearing loss linked with increased risk for premature death
December 16, 2018 - Chromatrap buffer reagents for lysing cells offer many benefits
December 16, 2018 - Young Breast Cancer Patients Face Higher Risk for Osteoporosis
December 16, 2018 - 3-D printing offers helping hand to people with arthritis
December 16, 2018 - Community Health Choice helps manage complex and chronic care conditions
December 16, 2018 - Regular trips out could dramatically reduce depression in older age
December 16, 2018 - CWRU to use VivaLNK’s Vital Scout device for stress study in student athletes
December 16, 2018 - ‘Easy Way Out’? Stigma May Keep Many From Weight Loss Surgery
December 16, 2018 - Gout drug may protect against chronic kidney disease
December 16, 2018 - Talking about memories enhances the wellbeing of older and younger people
December 16, 2018 - Occupational exposure to pesticides increases risk for cardiovascular disease among Latinos
December 16, 2018 - A biomarker in the brain’s circulation system may be Alzheimer’s earliest warning
December 16, 2018 - Magnesium may play important role in optimizing vitamin D levels, study shows
December 16, 2018 - The effect of probiotics on intestinal flora of premature babies
December 16, 2018 - Parents spend more time talking with kids about mechanics of using mobile devices
December 16, 2018 - Biohaven Announces Positive Results from Ongoing Rimegepant Long-Term Safety Study
December 16, 2018 - Arterial stiffness may predict dementia risk
December 16, 2018 - Study explores link between work stress and increased cancer risk
December 16, 2018 - Sex work criminalization linked to incidences of violence finds study
December 16, 2018 - Johns Hopkins researchers discover swarming behavior in fish-dwelling parasite
December 16, 2018 - Schistosomiasis prevention and treatment could help control HIV
December 16, 2018 - Early postpartum opioids linked with persistent usage
December 16, 2018 - Johns Hopkins researchers identify molecular causes of necrotizing enterocolitis in preemies
December 16, 2018 - Advanced illumination expands capabilities of light-sheet microscopy
December 16, 2018 - Alzheimer’s could possibly be spread via contaminated neurosurgery
December 16, 2018 - Unraveling the complexity of cancer biology can prompt new avenues for drug development
December 16, 2018 - Inflammatory Bowel Disease, Prostate Cancer Linked
December 16, 2018 - Cannabis youth prevention strategy should target mental wellbeing
December 15, 2018 - Recent developments and challenges in hMAT inhibitors
December 15, 2018 - Sewage bacteria found lurking in Hudson River sediments
December 15, 2018 - CDC selects UMass Amherst biostatistician model that helps predict influenza outbreaks
December 15, 2018 - Researchers reveal brain mechanism that drives itch-evoked scratching behavior
December 15, 2018 - New computer model helps predict course of the disease in prostate cancer patients
December 15, 2018 - Obesity to Blame for Almost 1 in 25 Cancers Worldwide
December 15, 2018 - How the brain tells you to scratch that itch
December 15, 2018 - New findings could help develop new immunotherapies against cancer
December 15, 2018 - World’s largest AI-powered medical research network launched by OWKIN
December 15, 2018 - Young people suffering chronic pain battle isolation and stigma as they struggle to forge their identities
December 15, 2018 - Lifespan extension at low temperatures depends on individual’s genes, study shows
December 15, 2018 - New ingestible capsule can be controlled using Bluetooth wireless technology
December 15, 2018 - Researchers uncover microRNAs involved in the control of social behavior
December 15, 2018 - Research offers hope for patients with serious bone marrow cancer
December 15, 2018 - Link between poverty and obesity is only about 30 years old, study shows
December 15, 2018 - Mass spectrometry throws light on old case of intentional heavy metal poisoning
December 15, 2018 - BeyondSpring Announces Phase 3 Study 105 of its Lead Asset Plinabulin for Chemotherapy-Induced Neutropenia Meets Primary Endpoint at Interim Analysis
December 15, 2018 - Study finds that in treating obesity, one size does not fit all
December 15, 2018 - Tenacity and flexibility help maintain psychological well-being, mobility in older people
December 15, 2018 - Study reveals role of brain mechanism in memory recall
December 15, 2018 - High levels of oxygen encourage the brain to remain in deep, restorative sleep
December 15, 2018 - Experimental HIV vaccine strategy works in non-human primates, research shows
December 15, 2018 - Genetically modified pigs could limit replication of classical swine fever virus, study shows
December 15, 2018 - FDA Approves Herzuma (trastuzumab-pkrb), a Biosimilar to Herceptin
December 15, 2018 - Cost and weight-loss potential matter most to bariatric surgery patients
December 15, 2018 - Cancer Research UK and AstraZeneca open new Functional Genomics Centre
December 15, 2018 - New research lays out potential path for treatment of Huntington’s disease
December 15, 2018 - Prestigious R&D 100 Award presented to Leica Microsystems
December 15, 2018 - Study shows septin proteins detect and kill gut pathogen, Shigella
December 15, 2018 - Study sheds new light on disease-spreading mosquitoes
December 15, 2018 - 2017 Saw Slowing in National Health Care Spending
December 15, 2018 - Monitoring movement reflects efficacy of mandibular splint
December 15, 2018 - Study supports BMI as useful tool for assessing obesity and health
December 15, 2018 - Self-guided, internet-based therapy platforms effectively reduce depression
December 15, 2018 - Organically farmed food has bigger climate impact than conventional food production
December 15, 2018 - Faster, cheaper test has potential to enhance prostate cancer evaluation
December 15, 2018 - Researchers study abnormal blood glucose levels of patients after hospital discharge
December 15, 2018 - Swedish scientists explore direct association of dementia and ischemic stroke deaths
December 15, 2018 - Study finds 117% increase in number of dementia sufferers in 26 years
December 15, 2018 - Eczema Can Drive People to Thoughts of Suicide: Study
December 15, 2018 - Link between neonatal vitamin D deficiency and schizophrenia confirmed
December 15, 2018 - Nurse denied life insurance because she carries naloxone
December 15, 2018 - Ritalin drug affects organization of pathways that build brain networks used in attention, learning
December 15, 2018 - Research pinpoints two proteins involved in creation of stem cells
Researchers expand new computation way for higher estimation of indoor carbon dioxide

Researchers expand new computation way for higher estimation of indoor carbon dioxide

image_pdfDownload PDFimage_print

The air we breathe out can lend a hand us give a boost to the standard of the air we breathe in.

Measurements of indoor carbon dioxide (CO2) concentrations are used to judge indoor air high quality, which is strongly related to the degrees of contaminants, reminiscent of gases and debris, circulating about with CO2. This data additionally can be utilized to keep an eye on air flow, which is helping blank the air, and cut back the will for heating and cooling, which saves calories. On the other hand, consistent with Nationwide Institute of Requirements and Generation (NIST) mechanical engineer Andrew Persily and George Mason College vitamin professor and human metabolism scientist Lilian de Jonge, the method that is been used for the reason that early 1980s to estimate an integral a part of the ones calculations — the quantity of CO2 generated by way of construction occupants — depends on previous information and a technique missing clinical documentation. This implies present estimates of CO2 era charges is also off by way of up to 25 p.c.

To lend a hand cope with the issue, Persily and de Jonge have evolved a brand new computation way that makes use of well-established ideas from the learn about of human metabolism and workout body structure bearing on CO2 era charges to frame dimension and composition, nutrition and stage of bodily task. This ends up in extra correct estimates of the CO2 generated by way of folks, the researchers stated, which therefore yields an advanced estimate of the focus produced by way of a construction’s complete occupant inhabitants.

The researchers document their paintings within the magazine Indoor Air.

Surveying just about 4 a long time of literature on carbon dioxide era by way of construction occupants, Persily and de Jonge came upon a lot of issues of the often used way for quantifying the metabolic charge of a person. Additionally they discovered problems with the equation for estimating the ratio of inhaled oxygen and exhaled CO2 used to calculate CO2 era.

“But even so the truth that the CO2 era method dates to the 1980s and does now not imagine the numerous advances made within the learn about of human metabolism and body structure since that point, shall we now not to find a lot clinical proof to reinforce it within the first position,” Persily stated. “Because of this, we’ve to query the accuracy of any CO2 era charges prior to now reported.”

Persily and de Jonge’s issues have been validated by way of a contemporary Chinese language learn about of indoor air environments that confirmed measurements of generated CO2 calculated with the lately used way hyped up the real quantities by way of about 25 p.c in girls and 16 p.c in males.

To extend the accuracy and reliability of indoor CO2 measurements, Persily and de Jonge became to established science performed by way of researchers fighting the issue of weight problems.

“Prior to now thirty years, the common American’s nutrition and frame composition–we now have extra fats and not more muscle — have modified considerably, so the fields of human metabolism and workout body structure have interested in characterizing calories necessities, particularly relating to nutrition and workout,” de Jonge defined. “This information resulted in a greater approach to calculate how a lot oxygen is had to meet the ones wishes, and the use of the similar technique, we have been in a position to give a boost to how exhaled CO2 is estimated as effectively.”

Persily and de Jonge’s new manner makes use of the basal metabolic charge (BMR) of a person — the minimal quantity of calories she or he expends whilst at relaxation — blended with that particular person’s stage of bodily task to extra appropriately derive the quantity of CO2 produced by way of the occupants of an indoor house. The BMR additionally considers the intercourse, age and frame dimension — the use of mass quite than floor house — of the folks making up the gang.

“This can be a vital development over the standard way for calculating CO2 as a result of frame mass is well measured whilst floor house can most often best be estimated,” de Jonge stated.

Persily and de Jonge will subsequent paintings on validating their methodology in order that it could actually transfer towards huge acceptance and utilization. Additionally they will learn about its affects on making improvements to indoor air high quality and decreasing calories use.

“We are hoping that our calculation way will sooner or later be used to resolve the optimum CO2 ranges wanted to succeed in extra dependable, cost-effective and energy-efficient operation of call for keep an eye on air flow techniques, gadgets that use sensible sensors that keep watch over when and what sort of outdoor air to carry into an indoor setting,” Persily stated.


Tagged with:

About author

Related Articles