Letting The Sunshine In

House dust contains a myriad of bacteria – what can we do to help?

We’re surrounded! House dust is a rich source of bacteria

https://phys.org/news/2008-04-house-rich-source-bacteria.html

“If you’ve always suspected there are unknown things living in the dark and dusty corners of your home and office, we are now one step closer to cataloging exactly what might be lurking in your indoor environment. Buildings have their own pattern of bacteria in indoor dust, which includes species normally found in the human gut, according research published in BMC Microbiology.

The microbial flora from indoor dust samples from two buildings was complex and dominated by bacterial groups originating from users of the buildings. The Finnish-based research team investigated the species level diversity and seasonal dynamics of bacterial flora in indoor dust by sequencing DNA from the dust samples collected.

“People spend most of their lives in different indoor environments: homes, schools, workplaces” explained microbiologist and lead researcher Helena Rintala. “And as such we are constantly challenged by airborne microbes. It is important then to understand the exact nature of this exposure and to be able to understand how it affects our health.”

Indoor dust samples were taken in 2003 from two nursing homes located in small towns in central Finland, 100 km apart. Both buildings were similar in age, building frame, ventilation, use and rural location. Offices in the two buildings were sampled at different times during 1 year to obtain four samples per building, one for each season

By examining dust samples taken from hard surfaces such as tables and floors using a vacuum cleaner, Rintala and her colleagues found that Gram-positive bacteria dominated. This group includes Staphylococcus and Streptococcus species that belong to the normal bacteria in humans. Approximately five hundred bacterial species were estimated to be present in the dust, which is relatively easy to collect and reveals a good picture of the total microbial exposure in indoor environments. Although the diversity of the bacteria differed according to seasons, the difference between the buildings was greater than the variation observed throughout the year within a particular building.

“So far most of our information about microbes in indoor environments has concentrated on fungi. Our results show basic information on bacteria. Although our findings are significant, we do need more research to find out where the microbes are coming from for instance, “ concluded Rintala.

Source: BioMed Central”

Letting the sunshine in may kill dust-dwelling bacteria

Letting the sunshine in may kill dust-dwelling bacteria
by BioMed Central

https://phys.org/news/2018-10-sunshine-dust-dwelling-bacteria.html

“Allowing sunlight in through windows can kill bacteria that live in dust, according to a study published in the open access journal Microbiome.

Researchers at the University of Oregon found that in dark rooms 12% of bacteria on average were alive and able to reproduce (viable). In comparison only 6.8% of bacteria exposed to daylight and 6.1% of bacteria exposed to UV light were viable.

Dr. Fahimipour said: “Humans spend most of their time indoors, where exposure to dust particles that carry a variety of bacteria, including pathogens that can make us sick, is unavoidable. Therefore, it is important to understand how features of the buildings we occupy influence dust ecosystems and how this could affect our health.”

Dust kept in the dark contained organisms closely related to species associated with respiratory diseases, which were largely absent in dust exposed to daylight.

The authors found that a smaller proportion of human skin-derived bacteria and a larger proportion of outdoor air-derived bacteria lived in dust exposed to light that in than in dust not exposed to light. This may suggest that daylight causes the microbiome of indoor dust to more strongly resemble bacterial communities found outdoors.

The researchers made eleven identical climate-controlled miniature rooms that mimicked real buildings and seeded them with dust collected in residential homes. The authors applied one of three glazing treatments to the windows of the rooms, so that they transmitted visible, ultraviolet or no light. After 90 days, the authors collected dust from each environment and analysed the composition, abundance, and viability of the bacteria present.

Dr. Fahimipour said: “Our study supports a century-old folk wisdom, that daylight has the potential to kill microbes on dust particles, but we need more research to understand the underlying causes of shifts in the dust microbiome following light exposure. We hope that with further understanding, we could design access to daylight in buildings such as schools, offices, hospitals and homes in ways that reduce the risk of dust-borne infections.”

The authors caution that the miniature room environments used in the study were exposed to only a relatively narrow range of light dosages. Although the researchers selected light dosages similar to those found in most buildings, there are many architectural and geographical features that produce lower or higher dosages of light that may need additional study.”

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Dust Monitoring Equipment – providing equipment, services and training in dust fallout management to the mining industry.

 

Drylands solution to climate change

An interesting article from The University of Derby (January 2020) says that new research offers a global drylands solution to climate change. Phys.org

Drylands - phys.org

“A new study published in the Journal for Geographical Research: Biogeosciences, led by a University of Derby academic, has shed new light on how microorganisms move through dryland landscapes attached to wind-blown dust and then alter the surfaces that they land on.

Drylands cover more than 40 percent of the global land area and are home to more than two billion people but are at growing risk of desertification, which makes the land unsuitable for grazing and agriculture, and causes hazards such as mobile sand dunes and dust storms.

The paper, “Surface Stability in Drylands is Influenced by Dispersal Strategy of Soil Bacteria,” was written with collaborators at Aberystwyth University and The Australian National University, and is part of a wider National Environment Research Council (NERC) funded project led by Loughborough University.

The team of researchers used a wind tunnel to analyse the dust eroded from the sandy soil on dry sand dunes in Australia. By comparing the microbes in the dust with the microbes in the source soil, researchers were able to identify which microbes contribute most to sticking soil together.

Dr. David Elliott, associate professor at the University of Derby explains: “In the world’s drylands, plants do not cover the soil surface as completely as they do in wetter regions leaving soils more exposed to weather and vulnerable to erosion by wind and water, which can lead to a reduction in soil quality.”

“Dryland soils that are not covered by plants do, however, usually have a thin covering of microbes that bind the soil together. These microbes are collectively called ‘biocrusts,” and they are important for stabilising dryland soils—meaning fewer dust storms, improved soil fertility, greater ability to hold onto rain water, and better opportunities for plants to establish.”

The researchers are now hoping to conduct further tests into how microbes disperse and interact with the landscape and evaluate the role of flooding in microbial dispersal to provide useful advice and possible interventions in managing the landscape.”

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Dust Monitoring Equipment – providing equipment, services and training in dust fallout management to the mining industry.

Terrifying Saharan Dust Storm

2020 is really proving to be a year of extremes!  Although Saharan dust blowing over to the United States is a yearly event, this year’s dust is proving to be quite terrifying.  The following article from Mother Jones explains more.

Dust Storm - Airborne dust particles -Terrifying Saharan Dust Storm

2020’s Latest Biblical Plague: A Terrifying Saharan Dust Storm Is Heading for the United States
The dust cloud is forecast to sweep across Texas and Louisiana this week.

MOLLY OLMSTEAD

June 26 2020

In what appears to be the latest biblical plague of 2020, a nearly 4,000-mile-long dust storm from the Sahara Desert is currently headed toward the southeastern coast of the United States.

This dust plume, known as the Saharan Air Layer, is a phenomenon that develops every year off the coast of Africa, where powerful winds from thunderstorms over the Sahel can push the dust many thousands of feet up into the atmosphere. A few times a year, that layer of dust sends out vast clouds that then drift over the sea.

But this year, the dust clouds that normally do little more than amplify sunsets have drifted far lower to coat Caribbean islands with a thin layer of dust and choke the air with a dry haze that in some places cut visibility by more than half. The cloud is forecast to sweep across the southeastern United States—Texas and Louisiana in particular—on Wednesday, Thursday, and Friday. Another wave of dust is expected to follow.

According to the New York Times, in those areas affected by the dust, some people with asthma and underlying lung conditions might be at risk for irritation and discomfort. Those residents should avoid outdoor activities and monitor the air quality.

One good quality of these plumes is that they typically squash any early hurricane formations with their dry air. But according to the Washington Post, the dust can also deposit enough iron into the Gulf of Mexico to spur dangerous and noxious algal blooms. It’s also possible some of the microbes and nutrients carried in the dust play an important role in local ecosystems.”

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Dust Monitoring Equipment – providing equipment, services and training in dust fallout management to the mining industry.

Fallout Dust Monitoring Equipment. Dust Monitoring Equipment – Supply and Services of Dust Monitoring Equipment. Dust Buckets. Dust monitoring training courses. Dust Watch.

Why is air quality so important?

A few articles that explain why air quality is so important – vital both to personal health and the health of the economy.

Please follow the links to read the articles at source.

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“Why is air quality so important?
Here’s why Europe needs to tighten its legislation on threats to air quality from road vehicles, diesel machinery and sea-going ships.

https://www.transportenvironment.org/what-we-do/air-quality-and-transport/why-air-quality-so-important

How does air pollution affect us?
An adult breathes 15,000 litres of air every day. When we breathe polluted air pollutants get into our lungs; they can enter the bloodstream and be carried to our internal organs such as the brain. This can cause severe health problems such as asthma, cardiovascular diseases and even cancer and reduces the quality and number of years of life. (New evidence even suggests that every organ in the human body is harmed.) Vulnerable groups, namely children, people with chronic diseases, and the eldery, are particularly sensitive to the dangerous effects of toxic air pollution.

Polluted air also causes eutrophication and acidification of our ecosystems, which results in the loss of agricultural productivity, irreversible damage to ecosystems and the loss of biodiversity. Last but not least, air pollution causes severe damage to our cultural heritage by degrading architectural masterpieces that are part of our national and European identity.

How is the air quality in Europe?
In the EU 100 million sick days and more than 390,000 premature deaths can be attributed to air pollution every year. According to the European Environment Agency more than 95% of the EU’s urban population are exposed to dangerous levels of ozone pollution, three-quarters breathe excessive levels of particulate matter (PM2.5), and 7-8% are exposed to toxic levels of nitrogen dioxide (NO2).

Infringement procedures against 15 EU member states are ongoing for the breach of ambient air quality limits.

What is the economic cost of air pollution?
The health costs attributable to air pollution caused by road transport have been estimated at €67 billion to €80 billion annually by the EU in a study for the European Public Health Alliance. An estimated 75% of these costs are linked to diesel cars, and are primarily borne by taxpayers and customers paying insurance premiums. These costs can be significantly reduced by up to 70% by 2030 if appropriate measures are taken, such as low emission zones, the study finds.

What are the pollutants of main concern to air quality in Europe?
The pollutants of main concern for health in the EU are particulate matter (PM), nitrogen oxides (NOx) and ground-level ozone (O3). Particulate matter has the most severe health effects, in particular the ultrafine matter which can penetrate deeper into our lungs and body. There is no safe concentration level, according to the World Health Organisation.

Nitrogen dioxide’s (NO2) has major negative effects such as inflammation of the airways, bronchitis in asthmatic children, and reduced lung function. Nitrogen oxides (NOx) cause acidification and eutrophication and is a precursor of O3 and PM.

Excessive O3 in the air can cause breathing problems, asthma and lung diseases. It can lead to reduced crop yields, loss of biodiversity and degradation of physical cultural heritage. Furthermore, it causes global warming.

Why is it so important to tackle air quality threats from road and diesel machine sources?
Our roads are crowded with motor vehicles. Vehicle exhaust gases contain a number of dangerous pollutants, such as nitrogen oxides (NOx) and particles, and unfortunately we are exposed to them every day. Exposure is particularly important if we live in a city or near a busy road or highway. Road transport is responsible for 39% of NOx emissions from all land sources.

Diesel machinery also represents an important health problem, in particular for workers using it.

What is Europe doing about air pollution?
Air pollution legislation includes the Ambient Air Quality directive (AAQD), the National Emissions Ceiling Directive (NECD) and sector-specific legislation.

The AAQD sets quality objectives for ambient air by establishing limit values for air pollutant concentrations. These limits apply to pollutants responsible for acidification, eutrophication and O3 formation. Member states have an obligation to comply with the limits but can choose how to achieve this.

The NECD establishes national ceilings for total emissions of four different pollutants. The NECD is based on the Gothenburg protocol, an international agreement with the very same objectives.

Sector-specific legislation includes emissions rules for passenger cars and light vans (light duty vehicles), trucks and buses (heavy duty vehicles), diesel machinery (also known as non-road machinery) and seagoing ships.

What should Europe do?
Europe must be ambitious and make sure that cars, vans, trucks, trains, planes, ships and construction machines are as clean as possible, not only during type approval, but also in real life. The newly developed Real-world Driving Emissions (RDE) test for light-duty vehicles should be strengthened and used for all compliance in the future.

T&E also wants the EU to strengthen its Euro standards for air pollutants (future Euro 7 standards for cars, VII standards for trucks) with the WHO guidelines in a technology-neutral manner which doesn’t discriminate between fuels. It should also tighten further and ensure compliance with its legislation on diesel machinery and seagoing ships.”

Why is air quality so important?

Air Pollution

https://www.who.int/health-topics/air-pollution#tab=tab_1

World Health Organisation

“Air pollution kills an estimated seven million people worldwide every year. WHO data shows that 9 out of 10 people breathe air containing high levels of pollutants. WHO is working with countries to monitor air pollution and improve air quality.

From smog hanging over cities to smoke inside the home, air pollution poses a major threat to health and climate. The combined effects of ambient (outdoor) and household air pollution cause about seven million premature deaths every year, largely as a result of increased mortality from stroke, heart disease, chronic obstructive pulmonary disease, lung cancer and acute respiratory infections.

More than 80% of people living in urban areas that monitor air pollution are exposed to air quality levels that exceed WHO guideline limits, with low- and middle-income countries suffering from the highest exposures, both indoors and outdoors.

Ambient Air Pollution
From smog hanging over cities to smoke inside the home, air pollution poses a major threat to health and climate. Ambient air pollution accounts for an estimated 4.2 million deaths per year due to stroke, heart disease, lung cancer and chronic respiratory diseases.

Around 91% of the world’s population live in places where air quality levels exceed WHO limits. While ambient air pollution affects developed and developing countries alike, low- and middle-income countries experience the highest burden, with the greatest toll in the WHO Western Pacific and South-East Asia regions.

The major outdoor pollution sources include vehicles, power generation, building heating systems, agriculture/waste incineration and industry. Policies and investments supporting cleaner transport, energy-efficient housing, power generation, industry and better municipal waste management can effectively reduce key sources of ambient air pollution.

Air quality is closely linked to earth’s climate and ecosystems globally. Many of the drivers of air pollution (i.e. combustion of fossil fuels) are also sources of high CO2 emissions. Policies to reduce air pollution, therefore, offer a “win–win” strategy for both climate and health, lowering the burden of disease attributable to air pollution, as well as contributing to the near- and long-term mitigation of climate change.

Household Air Pollution
Household air pollution is one of the leading causes of disease and premature death in the developing world.

Exposure to smoke from cooking fires causes 3.8 million premature deaths each year, mostly in low- and middle-income countries. Burning fuels such as dung, wood and coal in inefficient stoves or open hearths produces a variety of health-damaging pollutants, including particulate matter (PM), methane, carbon monoxide, polyaromatic hydrocarbons (PAH) and volatile organic compounds (VOC). Burning kerosene in simple wick lamps also produces significant emissions of fine particles and other pollutants.

Particulate matter is a pollutant of special concern. Many studies have demonstrated a direct relationship between exposure to PM and negative health impacts. Smaller-diameter particles (PM2.5 or smaller) are generally more dangerous and ultrafine particles (one micron in diameter or less) can penetrate tissues and organs, posing an even greater risk of systemic health impacts.

Exposure to indoor air pollutants can lead to a wide range of adverse health outcomes in both children and adults, from respiratory illnesses to cancer to eye problems. Members of households that rely on polluting fuels and devices also suffer a higher risk of burns, poisonings, musculoskeletal injuries and accidents.”

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Dust Monitoring Equipment – providing equipment, services and training in dust fallout management to the mining industry.

Fun Facts about Mining

For something a bit lighter!  Here are a few fun facts about mining.

Follow the links to the source of the information.

Fun Facts about Mining

https://www.generalkinematics.com/blog/7-fun-facts-mining-industry/

7 FUN FACTS ABOUT THE MINING INDUSTRY

“Around the world, countries of all shapes and sizes depend on the vast wealth of resources waiting just underneath the surface of the planet. For centuries, mankind has used mining techniques as the basis for ushering entire civilizations into grand new eras.

Mining has become an integral part of the economy for almost every developing nation. The practice has created a rich history. Let look at a few fascinating facts about the mining industry.

1. The first metals to be unearthed were gold and copper.

Copper finds have dated back to 8,700 BC. Scientists have even located copper pipes that dated back more than five thousand years.

2. Individual Americans use an average of 40,000 pounds of minerals each year.

From the vitamins we use to ward off colds (zinc is great for that) to the minerals that we use to flavor our food (e.g. salt), Americans consume a myriad of minerals daily.

3. Petroleum is used in more than 6,000 daily items.

Far more than simply fueling our vehicles and heating our homes, petroleum is used in plastic, crayons, DVDs, and more.

4. The ‘Luck of the Irish’ is an old mining term.

During the gold and silver rushes in Western America, some of the most famous and successful miners were Irish immigrants or of Irish descent. This phenomenon gave rise to the phrase “The Luck of the Irish.”

5. The average modern electronic device has more than 35 minerals in it.

From the smartphone in your pocket to the computer you rely on for work, modern electronics use gold, copper, zinc (which is 100 percent recyclable, by the way), and several other minerals to function properly.

6. There’s more than one ‘Fool’s Gold’

You knew that pyrite was called “Fool’s Gold,” but so is chalcopyrite and biotite mica.

7. Gold is elusive.

It’s believed that upwards of 80% of the world’s gold has yet to be discovered and is still buried beneath the earth’s surface. And did you know that pure gold is so soft that it can be molded with nothing more than a simple hand tool?

The world of mining has been a benefit to mankind since its inception, and thanks to the innovations in vibratory equipment from General Kinematics it will continue to be a beneficial trade in the coming decades. Let GK put their revolutionary mining technology to work for you.”

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10 INTERESTING MINING FACTS YOU PROBABLY DIDN’T KNOW
February 2, 2017/in Mining/Heavy Industrial by Dana Belstler

https://johnsonsearchgroup.com/2017/02/10-interesting-mining-facts-probably-didnt-know/

“It’s no secret that mining is important to our economy, but I don’t think most people realize how vital and integrated the mining industry is in our everyday lives! For instance, did you know…

1. Every American uses an average of 40,000 pounds of new minerals each year.

2. A newborn baby will need during its lifetime:

800 pounds of lead
750 pounds of zinc
1500 pounds of aluminum
32,700 pounds of iron
26,550 pounds of clay
28,213 pounds of salt
1,238,101 pounds of stone, sand, gravel, and cement

3. Because of wood shortages in the 1600’s, Brewers in England started drying their Malts with heat generated by coal. Unfortunately, coal flavored beer was not a hit. After more experimentation, the brewers found that the undesirable gases could be eliminated by heating the coal in an airtight oven. Thus, the discovery of the coke making process, so vital to iron and steel! The next time you have a cold one, give a toast to the Brewers of the 1600’s!

4. Copper and Gold were the first two metals discovered by man, with Copper dating back to 8,700 BC, per Wikipedia. Slag found on islands in the Aegean Sea suggests that man was separating silver from lead as early as 3000 B.C.!

5. In ancient times, an ounce of salt was traded for an ounce of gold! Fast forward to present day: Can you imagine $1,200/oz. for salt?

6. Out of all the elements, Silver is the best conductor and thus the reason it is used so heavily in technology.

7. Silver is also a superior anti-bacterial. Small concentrations kill bacteria by chemically breaking down their cell membranes. Bacteria does not develop a resistance to silver!

8. Zinc is the fourth most widely consumed metal after iron, aluminum, and copper and is also vital to the human body for proper function and health. Zinc is needed for the body’s enzymes and immune system. (Zinc tablets to ward off colds!)

9. Indium is a byproduct of zinc production and is also used in high technology applications from LCD screens to solar panels.

10. Wyoming is the nation’s top coal-producing state. Who knew?

Being on the Mining Team at Johnson Search Group, I have had the pleasure of speaking with the men and women in the industry and wish to extend a big “Thank you”, for all the hard work you do in keeping us in the lifestyles we are accustomed to!”

Sources

http://www.dnr.state.mn.us/education/teachers/activities/soudan_mine/miningfacts.html
http://geology.com/usgs/uses-of-zinc/
http://www.mnn.com/earth-matters/wilderness-resources/blogs/10-elements-crucial-to-modern-life-that-youve-probably
http://igentry.blogspot.com/2008/07/interesting-facts-about-silver.html

 

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Dust Monitoring Equipment – providing equipment, services and training in dust fallout management to the mining industry.

Air Quality – Economies, Ecosystems and Children

Air pollution and air quality affects all of us.  Here are some articles relating to it’s impact on economies, ecosystems and children’s health.

Please follow the links to read the articles at source.

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How air quality affects economies and ecosystems

https://www.pca.state.mn.us/air/how-air-quality-affects-economies-and-ecosystems

“Clean air means healthier ecosystems

Air pollution affects the ecosystems that Minnesotans value. Pollutants in our air reduce visibility, creating a haze that can affect scenic views in pristine places such as the Boundary Waters Canoe Area and Voyageurs National Park, as well as in our urban areas.

Minnesota’s lakes and streams can be harmed by air pollution that causes acid rain, and fish can be affected by mercury that settles out of the air and into the water. In addition, emissions of greenhouse gases contribute to climate change, which will cause significant changes to Minnesota’s ecosystems in the years to come. Reducing air pollution means protecting the wild places we enjoy and the plants and animals that inhabit them.

Clean air means a stronger economy
The money spent on reducing pollution in Minnesota often stays in Minnesota. Companies that design, install, maintain, and operate pollution-reducing processes and equipment create thousands of high-paying green jobs in engineering, manufacturing, construction, materials, operation, and maintenance.

Cleaner air and a growing economy can go hand in hand. Since the Clean Air Act was passed in 1970, emissions of common air pollutants in the U.S. have dropped 70 percent while the U.S. gross domestic product has grown nearly 250 percent.

Cleaner air protects the fish and natural places that many Minnesotans rely on for their livelihoods. Air pollution can also cause damage to crops and forests. Clear skies, edible fish, and healthy crop and forest land are critical to Minnesota’s economy.

Because cleaner air also improves our health, having good air quality means fewer missed work and school days and less spending on air pollution-related illness. We estimate the overall economic impact of health effects associated with exposure to current levels of air pollution in Minnesota may exceed $30 billion per year.

Cleaner air means a strong, diverse economy for all Minnesotans.”

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Children’s environmental health

WHO – https://www.who.int/health-topics/children-environmental-health#tab=tab_1

“Reducing environmental risks could prevent 1 in 4 child deaths. In 2012, 1.7 million deaths in children under five were attributable to the environment. These included 570 000 deaths from respiratory infections, 361 000 deaths from diarrhoea, 270 000 deaths from neonatal conditions, 200 000 deaths from malaria and 200 000 deaths from unintentional injuries.

Environmental risks have an impact on the health and development of children, from conception through childhood and adolescence and also into adulthood. The environment determines a child’s future: early life exposures impact on adult health as fetal programming and early growth may be altered by environmental risk factors.

Adverse environmental conditions and pollution are a major contributor to childhood deaths, illnesses and disability, particularly in developing countries.

Children are particularly vulnerable to certain environmental risks, including: air pollution; inadequate water, sanitation and hygiene; hazardous chemicals and waste, radiation; climate change; as well as emerging threats like e-waste.

Risks
Children are more vulnerable than adults to environmental risks:

Children are constantly growing. They breathe more air, consume more food, and drink more water than adults do, in proportion to their weight;
Children’s systems are still developing. This includes their central nervous, immune, reproductive, and digestive systems. At certain early stages of development, exposure to environmental toxicants can lead to irreversible damage;
Children behave differently from adults and this means there are different ways they can be exposed to environmental risks. For example, young children crawl on the ground where they may be exposed to dust and chemicals that accumulate on floors and soils;
Children have little control over their environment. Unlike adults, they may be both unaware of risks and unable to make choices to protect their health.
Environmental risks account for 25% of the disease burden in children under five. Children’s health problems often result from exposure to a number of environmental risk factors in the places where they live, work, play and learn.

Only through adopting a holistic approach to environmental risk factors can significant progress be made in reducing the environmental burden of disease on a global scale. Such an approach means involvement across sectors and at all levels of society including individuals, communities, municipalities, healthcare professionals, and policy makers.

Capacity
Childhood diseases related to environmental factors represent an enormous global public health problem. This is particularly true in developing countries and impoverished communities, where there is often lack of awareness and knowledge about the effects of environmental hazards on children’s health.
To help address this problem, WHO prepares information and training materials and implements training activities. To allow healthcare providers to better identify and prevent childhood diseases related to environmental risk factors, experts from both developed and developing countries have been involved in the preparation and peer-review of materials on specific environmental topics.”

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Dust Monitoring Equipment – providing equipment, services and training in dust fallout management to the mining industry.

Air Quality - Economies, Ecosystems and Children

DustWatch Product Videos

Hello everyone!

Take a look at our new dust bucket units.  Follow the links to watch the instructional videos.

In the first video, Chris Loans will show you how to change the buckets on the new DustWatch unit.

The second video is an operational training video on our new American type unit. The video will show you how to assemble and disassemble the unit.

Video – How to change buckets

Video – American type unit

I hope you enjoy the videos and find them helpful.

Have a great day!

DustWatch Product Videos

Dust Monitoring Equipment – providing equipment, services and training in dust fallout management to the mining industry.

Dust Monitoring Training Courses August 2020

Dust Monitoring Training Courses for August 2020

Dust Monitoring Training Courses for 2020 - Chris Loans

The next Fallout Dust Monitoring course is 11th August 2020 Pretoria.

11-13 Aug (Pretoria)

R4400 per person per day. The course has 3 CPD points if all three days are attended.

If you would like to attend or to send a representative, then please email  chris@dustwatch.com or call 021 789 0847 or 082 875 0209 to reserve a place.

Please do not hesitate to contact me regarding any queries, comments, or suggestions.

Synopsis of Training – Practical 1 Day:

  • Changing DustWatch buckets
  • Basic operational use of the DustWatch units
  • Filtering water from the buckets and collecting the dust on filters.

Synopsis of Training – Theoretical 2 Days:

  • What is fallout dust and how to collect it;
  • Settling velocity and shape of dust particles;
  • Understand how to calculate the fallout dust monitoring results in mg/m2/day and how to interpret these results;
  • Trace element analysis;
  • South African legislation interpretation;
  • Report writing and interpretation of results.

Sincerely

Chris Loans

 

Sensing the Air Quality

How do we tackle the problem of air quality? A particle sensor has been made that can detect the amount of dust in the air.  Read the following introduction to the article and then click the link to read the article itself to find out more.

https://towardsdatascience.com/sensing-the-air-quality-5ed5320f7a56

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Sensing the Air Quality

“Sensing the Air Quality
A low-cost IoT Air Quality Monitor based on RaspberryPi 4

By – Marcelo Rovai
Aug 22, 2019

I have the privilege of living in one of the most beautiful countries in the world, but unfortunately, it’s not all roses. Chile during winter season suffers a lot with air contamination, mainly due to particulate materials as dust and smog.

Because of cold weather, in the south, air contamination is mainly due to wood-based calefactors and in Santiago (the main capital in the center of the country) mixed from industries, cars, and its unique geographic situation between 2 huge mountains chains.

Nowadays, air pollution is a big problem all over the world and in this article we will explore how to develop a low expensive homemade Air Quality monitor, based on a Raspberry Pi.

The particulate matter (PM), what is, and how does it get into the air?
So, to understand pollution or air contamination, we must study the particles that are related to that, that are also known as particulate matter. Looking at the graphs on the previous section we can observe that they mentioned PM2.5 and PM10. Let’s give a quick overview of that.
PM stands for particulate matter (also called particle pollution): the term for a mixture of solid particles and liquid droplets found in the air. Some particles, such as dust, dirt, soot, or smoke, are large or dark enough to be seen with the naked eye. Others are so small they can only be detected using an electron microscope.
Particles come in a wide range of sizes. Particles less than or equal to 10 micrometers in diameter are so small that they can get into the lungs, potentially causing serious health problems. Ten micrometers is less than the width of a single human hair.

Particle pollution includes:
Coarse dust particles (PM10): inhalable particles, with diameters that are generally 10 micrometers and smaller. Sources include crushing or grinding operations and dust stirred up by vehicles on roads.
Fine particles (PM2.5) : fine inhalable particles, with diameters that are generally 2.5 micrometers and smaller. Fine particles are produced from all types of combustion, including motor vehicles, power plants, residential wood burning, forest fires, agricultural burning, and some industrial processes

Why is important care about those particulate matters?
As described by GERARDO ALVARADO Z. in his work at Chile University, studies of episodes of high air pollution in the Meuse Valley (Belgium) in 1930, Donora (Pennsylvania) in 1948 and London in 1952 have been the first documented sources that related mortality with particle contamination (Préndez, 1993). Advances in the investigation of the effects of air pollution on people’s health have determined that health risks are caused by inhalable particles, depending on their penetration and deposition in different sections of the respiratory system, and the Biological response to deposited materials.
The thickest particles, about 5 μm, are filtered by the joint action of the cilia of the nasal passage and the mucosa that covers the nasal cavity and the trachea. Particles with a diameter between 0.5 and 5 μm can be deposited in the bronchi and even in the pulmonary alveoli, however, they are eliminated by the cilia of bronchi and bronchioles after a few hours. Particles smaller than 0.5 μm can penetrate deeply until they are deposited in the pulmonary alveoli, remaining from weeks to years, since there is no mucociliary transport mechanism that facilitates elimination.

So, to spot both types of particles (PM2.5 and PM10) are very important and the good news is that both are readable by a simple and not expensive sensor, the SDS011.

The Particle Sensor — SDS011
Air Quality monitoring is well known and established science which started back in the 80’s. At that time, the technology was quite limited, and the solution used to quantify the air pollution complex, cumbersome and really expensive.
Fortunately, nowadays, with the most recent and modern technologies, the solutions used for Air Quality monitoring are becoming not only more precise but also faster at measuring. Devices are becoming smaller, and cost much more affordable than ever before.
In this article we will focus on a particle sensor, that can detect the amount of dust in the air. While the first generation was just able to detect the amount of opacity, most recent sensors as the SDS011 from INOVAFIT, a spin-off from the University of Jinan (in Shandong), can now detect PM2.5 and PM10.”

Click the link above to read the article.

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Dust Monitoring Equipment – providing equipment, services and training in dust fallout management to the mining industry.

Airborne Diseases

This is an article from Division of Disease Surveillance – Maine Center for Disease Control & Prevention outlining diseases that are airborne or direct contact diseases.

Please follow the link to read the article in full.

Airborne Diseases

https://www.maine.gov/dhhs/mecdc/infectious-disease/epi/airborne/index.shtml

Airborne and Direct Contact Diseases

Airborne Diseases

“Airborne diseases are caused by pathogenic microbes small enough to be discharged from an infected person via coughing, sneezing, laughing and close personal contact or aerosolization of the microbe.  The discharged microbes remain suspended in the air on dust particles, respiratory and water droplets. Illness is caused when the microbe is inhaled or contacts mucus membranes or when secretions remaining on a surface are touched.

Transmission of airborne diseases can be greatly reduced by practicing social and respiratory etiquette. Staying home when ill, keeping close contact with an ill person to a minimum, allowing a few feet distance from others while ill, and wearing a mask, covering coughs and sneezes with elbow or tissue can greatly reduce transmission. Good hand washing can decrease spread of germ-containing droplets that could be picked up on hands from surfaces or hand contact with secretions.  Environmental controls and engineering alternatives help reduce transmission of water droplet aerosolized pathogens.

Contact Diseases

Contact Diseases are transmitted when an infected person has direct bodily contact with an uninfected person and the microbe is passed from one to the other. Contact diseases can also be spread by indirect contact with an infected person’s environment or personal items. The presence of wound drainage or other discharges from the body suggest an increased potential for risk of transmission and environmental contamination.  Precautions that create a barrier and procedures that decrease or eliminate the microbe in the environment or on personal belongings, form the basis of interrupting transmission of direct contact diseases.

Airborne and Direct Contact Diseases Include:

  • Acute Flaccid Myelitis – A rare but serious condition that affects the spinal cord and causes muscles and reflexes to become weak.
  • Anthrax – A serious disease caused by Bacillus anthracis, a bacterium that forms spores. A bacterium is a very small organism made up of one cell. Many bacteria can cause disease. A spore is a cell that is dormant (asleep) but may come to life with the right conditions.
  • Carbapenem-resistant Enterobacteriaceae (CRE) – Enterobacteriaceae (En-tero-bac-te-ri-a-ce-ae) are a family of bacteria normally found in our gut.  They can also cause serious infection in the bladder, blood, wound and lungs.
  • Coronavirus – Coronaviruses are a large family of viruses that includes viruses that may cause a range of illnesses in humans, from the common cold to SARS and MERS.
  • Enterovirus – Non-polio enteroviruses are very common viruses that cause about 10 to 15 million infections in the United States each year.
  • Group A Streptococcus – A bacterium often found in the throat and on the skin. People may carry group A streptococci in the throat or on the skin and have no symptoms of illness. Most GAS infections are relatively mild illnesses such as “strep throat,” or impetigo. Occasionally these bacteria can cause severe and even life-threatening diseases.
  • Invasive Group B Streptococcal (GBS) – A bacterium that causes illness in newborn babies, pregnant women, the elderly, and adults with other illnesses, such as diabetes or liver disease. GBS is the most common cause of life-threatening infections in newborns.
  • Haemophilus influenza – Invasive disease caused by Haemophilus influenzae type b can affect many organ systems. The most common types of invasive disease are pneumonia, occult febrile bacteremia, meningitis, epiglottitis, septic arthritis, cellulitis, otitis media, purulent pericarditis, and other less common infections such as endocarditis, and osteomyelitis.
  • Influenza – A disease that is caused by a virus and infects the nose, throat, and lungs. Influenza can cause severe illness and life-threatening complications in many people.
  • Legionellosis – An infection caused by the bacterium Legionella pneumophila. Maine monitors the incidence of Legionellosis through mandatory reporting by health care providers, clinical laboratories and other public health partners.
  • Measles – A respiratory disease caused by a virus that causes fever, runny nose, cough, and a rash all over the body.
  • Meningococcal Disease – The leading cause of bacterial meningitis in children and young adults in the United States. Symptoms of meningococcal disease include fever, headache and stiff neck in meningitis cases, and sepsis and rash in meningococcemia.
  • MERS-CoV – Currently, all cases are associated with either direct travel to the Arabian peninsula, or contact with a returned traveler from the Arabian peninsula.
  • Mumps – A disease caused by a virus that usually starts with a fever, headache, muscle aches, tiredness, and loss of appetite followed by swelling of glands.
  • MRSA – Methicillin-resistant Staphylococcus Aureus is a bacterial infection that is resistant to some antibiotics. When MRSA bacteria are found on the skin but do not cause illness it is called “colonization.” In most cases, MRSA does not cause any problems or causes minor infections, such as pimples or boils. In some cases, MRSA can cause more serious infections.
  • Pertussis – A respiratory illness that usually starts with cold-like symptoms including a cough that can worsen after a few weeks. Pertussis is commonly known as whooping cough.
  • Plague – Plague is a disease caused by Yersinia pestis (Y. pestis), a bacterium found in rodents and their fleas in many areas around the world.
  • RSV – RSV is a respiratory virus that infects the lungs and breathing passages.  Healthy people usually experience mild, cold-like symptoms, but RSV can be serious especially for infants and older adults.
  • Strep pneumoniae – a Gram-positive encapsulated coccus that often colonizes the human nasopharynx, where it can be carried asymptomatically.
  • SARS – respiratory disease caused by a coronavirus, last reported in 2004
  • Tuberculosis – A disease caused by a bacterium that usually attacks the lungs.
  • Varicella – A disease commonly known as chickenpox that is caused by a virus. The most common symptom is a skin rash found mostly on the face, scalp, and trunk.”

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Dust Monitoring Equipment – providing equipment, services and training in dust fallout management to the mining industry.