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DWC: Quick question about pH and ppm

High RootSpaGuru DWC has been my favorite way to grow for 14 years and when I worried about pH I'd mix everything up and get it to about 5.4. When the plants were growing good it would creep up to around 6.2 so I'd add a bit of nutes to get the ppm back up to the level I wanted then add a few drops of concentrated sulfuric acid to knock it back to around 5.4 again.

Steam Trap Troubles? Skip the Psychics

Jun 26, 2000 · In the first part of this series, we took a broad look at the different types of steam traps a service tech could come across in the field. This week, let’s delve into the specifics of capacity, failures, sizing and selection, maintenance, repair, and more.

PAT Testing

Leakage Current Test Fig.1 Leakage Current Fail (I Leak) The second most frequently asked technical question we receive is regarding equipment failing a leakage test. Although most modern PAT instruments carry out a leakage measurement as part of their pre ...

American food: The 50 greatest dishes

(CNN) — Fast, junk, processed -- when it comes to American food, the country is best known for the stuff that's described by words better suited to greasy, grinding industrial output.But ...

Controlling Fermentation Temperature

This is the reason that historically many beers that needed to be fermented in a cool environment (particularly lagers) were brewed during the winter months and stored in caves or cellars. This is also why I ferment ale in the winter and mead in the summer, when my basement is in the proper temperature range for each type of fermentation.

Hardware Upgrade: Why Windows Can’t See All Your RAM

RAM May Not Be Seated Correctly. If you know your motherboard supports all the installed RAM, but it doesn’t appear in your BIOS, you may not have seated the RAM correctly in when you installed it. Cut the power to your computer by pressing the switch on the back of your case and open it up.

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Almost Daily Grant's - Grant's Interest Rate Observer

Almost Daily Grant's “Almost Daily” is the end-of-day delectation from Grant’s. ADG tells you what happened. It speculates on what may happen and tracks and develops Grant’s themes. Look for it after the New York close of trading—almost daily.

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The 2017 Blavatnik Science Symposium

The fourth annual Blavatnik Science Symposium convened at the New York Academy of Sciences on July 17–18, 2017. Winners and finalists of the regional and national Blavatnik Awards for Young Scientists came together to offer up two days of reports back from the cutting edge, spanning topics from genome editing and climate change to nanomaterials and renewable energy.

Growing Cucumbers in a 5 Gallon Bucket without Soil

Jun 24, 2019 · I have successfully grown cucumbers in a 55 gallon barrel so today I'm setting up a 5 gallon bucket to see if it will work the same way. ... Some links my be affiliate links, but that's okay ...

Aerobic Plate Count in Finished Product

Jan 28, 2015 · Aerobic Plate Count in Finished Product - posted in Food Microbiology: We have a fairly simple operation where we blend 4-6 powder raw materials to create a protein powder. The only machine we use is a ribbon blender. We combine the raw materials in a specific order and run the machine for preset times after each material is added. At completion, we acquire a representative sample & send off ...

Types of Concrete Gravity Dams

Types of Concrete Gravity Dams Introduction Gravity dams are solid concrete structures that maintain their stability against design loads from the geometric shape and the mass and strength of the concrete. Generally, they are constructed on a straight axis, but

How Did Ice Cream Get So Expensive?

Ice cream is not the American Dream, not exactly.It’s more like the American Way. It has countless stories to tell, and anyone can tell them. Walk up to the freezers at Whole Foods and stare at ...

BBC - Earth - Plants can see, hear and smell – and respond

Jan 10, 2017 · Plant; Plants can see, hear and smell – and respond ... plants also need sophisticated sensing devices tuned to varying conditions," says Schultz. ... there are limits. The danger is that we end ...

Troubleshooting Bacteria Levels at Wastewater Treatment Plants

TCEQ publication RG-515 Troubleshooting Bacteria Levels at Wastewater Treatment Plants February 2018 . 3. of bacteria permit limits and possibly other parameters, such as total suspended solids. • DO should be approximately 2 mg/L in the aeration basin to maintain healthy microorganisms. Keep your weirs clean

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Transformer | Electrical Notes & Articles

4/7/2011 · Standard Transformer Accessories & Fittings: Standard Transformer Fittings: 1) Standard Fittings Rating and terminal marking plate. Tap Changing arrangement Off – circuit tap changing switch Off – circuit tap changing link On Load tap changer Two earthing terminals Lifting Lugs Drain – cum filter valve Pressure Relief Device Silica gel dehydrating breather.

Growing Cactus

The distinctiveness of the cactus family shows itself not only in the flower structure, but also in one characteristic, that, although possessed by every cactus plant, is absent in all species of all other families. This is the spine cushion or areole. Whether or not spines are present, all cacti have areoles.

Five factors that can affect your weighing system's accuracy

Achieving this kind of weighing accuracy means considering many factors, both mechanical and operational, that can affect your weighing system. Choosing quality components especially suited to your application will go a long way toward ensuring that your system provides the accuracy you need.

Blow room

1/27/2018 · Blow Room ANOTHER BIG PROBLEM WITH CONVENTIONAL BLOWROOM LINES IS THE DETERIORATION OF THE RAW MATERIAL: about 50% of all shortcomings in the yarn; about 50% of all quality reducing factors; And around 50% of all yarn break causes can be traced back to the operation of the blow room and cards. All the above-mentioned facts are what makes the ...

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Disclaimer Tufts University does not review the content posted by this site’s users and is not responsible and shall not be liable for any such content. Video Control Reaction online video show on SMFA Graduate Program Blog by Jeannie 1 hour, 16 minutes ago ...

Analysis of bacterial biofilms using NMR-based metabolomics

Why 2D 1 H – 13 C heteronuclear ... from 0 to 10 ppm will have 400 buckets. Bin sizes typically range from 0.01 to 0.04 ppm. The peak intensity within each bucket is integrated, and these resulting integrals are then used as input to the chemometrics analysis. ... An ellipse that corresponds to the 95% confidence limits from a normal ...

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SOLVED: Kenmore model 21252110 auto load sensing

@mountian first thing you want to do is to unplug your machine then plug it back in after a short while (I'd give it 10-15min) This will act like a reset. After that make sure that your power outlet works. If it dos not check your circuit breakers or fuses. If that checks out okay it is possible... - Washing Machine

My front end loader on my Deere 4100 (410 loader) isn't

Jun 06, 2012 · My front end loader on my John Deere 4100 (410 loader) isn't working. The hydraulics are not leaking (we actually put all new hoses on) and there is plenty of hydraulic fluid. My husband says this had always been a problem, sometimes it works, sometimes it doesn't. I don't know if this matters or not but we are at 9600' altitude. Tractor starts ...

Watering Tips, When to Water | Gardener's Supply

A friend once had a summer job at one of New England's premier nurseries. He told me that the nursery owner always had his new employees spend the first two weeks doing nothing but watering plants. By teaching his staff how to water a plant properly, the owner ensured the health and vitality of his inventory.

de travail


CAPE - I+D+I - Idées 01


CAPE - Génie - Connaissance 02


CAPE - Production - Qualité 03


CAPE - Suivi - Technique 04


CAPE - Service - Tranquillité 05