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Me, testing samples at work today:
#chemistry #science
 

Познакомьтесь с анархистами, самостоятельно изготавливающими лекарства


«Уксусный коллектив четырёх воров» – сеть анархистов, опирающихся на технологии, и бросающих вызов гига... show more
 
Dad Advice:

As a General Rule, the nastier the solvent, the better a product will perform.

When you need a product like adhesive, paint, or a cleaner, always buy the one containing the most horrific solvent your application can tolerate. Avoid products labeled "Low Volatile Organic Compounds" (VOC) and "Green" or "Environmentally Friendly".

Example: I need to glue my boot back together. I did not buy Liquid Nails construction adhesive because it was Low-VOC and "green". Instead I got this F26 with toluene.

Weak Solvents: Water, Rubbing Alcohol, Soaps

Strong Solvents: Acetone, Toluene, Methyl Ethyl Ketone (MEK), Trichloroethylene.




#DadAdvice #DIY #Repair #Advice #Chemical #Solvent #Chemistry
 
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Bias-free photoelectrochemical water splitting with photosystem II on a dye-sensitized photoanode wired to hydrogenase....Scientists pioneer a new way to turn sunlight into fuel.The quest to find new ways to harness solar power has taken a step forward after researchers successfully split water into hydrogen and oxygen by altering the photosynthetic machinery in plants.They developed a photoelectrochemical cell that connects a red- and blue-light-absorbing photosystem with hydrogenase.
#photoelectrochemical #water #photosynthesis #science #technology #Cambridge #biology #chemistry #physics #energy #hydrogenase
https://www.cam.ac.uk/research/news/scientists-pioneer-a-new-way-to-turn-sunlight-into-fuel
 
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The tank is coming along pretty well now. All of the plants are established and growing. The only "problem" that remains is the pH. It's still in the 8.0+ range, which is odd because my tap is 7.2. I did have calciferous rock in there, but it's been gone for a few months now, and the pH hasn't lowered. Everything else in the system is either inert (silica sand, lava rock, clay) or should be actively acidifying the water (soil, wood, plants). I've been doing 30 gallon water changes once or twice per week. Any idea what gives?

#aquariums #fish #water #chemistry #pH
 
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#newhere, sort of, may as well be

I doubt I could really list everything I like, but I like #math #maths #mathematics and #science stuff in general, #geometry, #chemistry, #physics etc.
#art is great, I remember last time I followed some french and german art-related tags, but I forgot what the tags were :p
oh, and I like #octopuses and #octopus things, and I guess #corvids #corvidae

also #d&d, but idk how to tag that, #dnd maybe

anyway, here's a pic of a #cat in some #flowers that I found somewhere on the internet
 
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#newhere, sort of, may as well be

I doubt I could really list everything I like, but I like #math #maths #mathematics and #science stuff in general, #geometry, #chemistry, #physics etc.
#art is great, I remember last time I followed some french and german art-related tags, but I forgot what the tags were :p
oh, and I like #octopuses and #octopus things, and I guess #corvids #corvidae

also #d&d, but idk how to tag that, #dnd maybe

anyway, here's a pic of a #cat in some #flowers that I found somewhere on the internet
 
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Since the beginning, my big tank has been plagued by fish deaths and slow plant growth, despite everything seeming "fine". The only anomaly is a high pH (~7.8) which I believe to be caused by the calciferous rock I used to aquascape it. I soaked the rocks in diluted muriatic acid to try to burn off most of the surface calcium, but apparently that was not enough. Today I pulled them out, which left the tank a bit cloudy and also barren looking. This weekend I'm going to a lake and I'm hoping to find a nice 5-6" piece of waterlogged wood that I can put in there instead.

#aquariums #fish #rocks #water #pH #chemistry
 
#vegan #dog is perfectly fine. no #animal NEED #meat , the essential thing is to get all needed nutriants , and no matter if this come from animal , vegetal of organic #chemistry synthesis sources. dogs can get all from plant based diet, they even don't need #taurine like #cats
 
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I teed off a water line in my basement and connected it to the ice maker solenoid. Since the water contains chloramines, I'll need to run a dosing pump simultaneously with the solenoid valve to add dechlorinator, so I need to calculate the proper concentration. Can someone please check my math? (apologies for the mixed metric/imperal units)

I timed how long it took to fill a 1 gallon jug from the solenoid: 200 seconds. 3600 seconds per hour, divided by 200 = 18 gallons per hour.

I need 1ml of dechlorinator for every 6 gallons of water, so for 18 gallons I need 3ml.

The dosing pump is rated at 3.5 gph, so to dechlorinate 18 gallons of water with 3.5 gallons of dechlorinator, the solution will need to be 3ml per 3.5 gallons, or 0.85ml per gallon.

Did I do that right?

#aquariums #water #ato #solenoid #water #flowrates #chemistry #math #maths #automation #plumbing #diy
 
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I teed off a water line in my basement and connected it to the ice maker solenoid. Since the water contains chloramines, I'll need to run a dosing pump simultaneously with the solenoid valve to add dechlorinator, so I need to calculate the proper concentration. Can someone please check my math? (apologies for the mixed metric/imperal units)

I timed how long it took to fill a 1 gallon jug from the solenoid: 200 seconds. 3600 seconds per hour, divided by 200 = 18 gallons per hour.

I need 1ml of dechlorinator for every 6 gallons of water, so for 18 gallons I need 3ml.

The dosing pump is rated at 3.5 gph, so to dechlorinate 18 gallons of water with 3.5 gallons of dechlorinator, the solution will need to be 3ml per 3.5 gallons, or 0.85ml per gallon.

Did I do that right?

#aquariums #water #ato #solenoid #water #flowrates #chemistry #math #maths #automation #plumbing #diy
 
Why Should You Supplement with Plant Derived Minerals? | Plant Minerals News

"Most scientific studies isolate minerals and vitamins from each other in order to study and market them. However, the natural proportions of Plant Derived Minerals created in Mother Nature’s laboratory synergise for the best digestion and balance possible. Most importantly, they are pure, 100% natural, plant digested and are the absolute best for the optimum health of both animals and people.

You must give your body all the raw materials it requires to maintain and renew itself in order to achieve a healthy life. The raw materials so vital to your health can be challenging to find. Centuries of mining, farming, irrigation and acid rain have eroded life giving minerals from our soil.

Mineral deficient soils are then used to grow and cultivate our food. Because of this, our food is lacking in the essential plant minerals necessary to live a long and healthy life. It’s not surprising that when your body is robbed of essential plant minerals it is unable to repa... show more
 
The Texas Engineering researchers have developed a new hydrogel-based solar vapor generator that uses ambient solar energy to power the evaporation of water for effective desalination.
-> Water Purification Breakthrough Uses Sunlight and Hydrogels
-> UTNews - The University of Texas at Austin

#engineering #water #chemistry #desalination #water-purification #technology
 
"Water-based batteries could be crucial to preventing fires in electronics, but their energy storage and capacity have been limited – until now. For the first time, we have a battery that could compete with the lithium-ion batteries in energy density, but without the risk of explosion or fire," says Fei Wang, a jointly appointed postdoctoral associate at UMD's Clark School and ARL, and first author of the paper.

Further, in this collaborative effort, the researchers identified the fundamental reason causing irreversibility in zinc batteries – a phenomenon observed in rechargeable battery usage where the amount of charge a battery can deliver at the rated voltage decreases with use – and found a novel solution to it. The secret was to alter the solvation sphere structure of zinc cation (positively charged ions).
-> A higher-energy, safer and longer-lasting zinc battery
-> University of Maryland - A. James Clark School o... show more
 
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Light-Responsive Chemistry to Enable Tunable Interface-Dependent Mechanical Properties in Composites. This work shows the potential of using stimuli,responsive interfacial adhesion as a means to control interface,dependent properties in nanocomposites could enable interesting applications,such as remote shaping of structural materials,adaptive soft robotics,and tunable intrinsic material damping.In this approach,covalent interfacial bonding is triggered by exposure to an ultraviolet light stimulus,while the degree of interfacial interaction is varied with irradiation duration.
#Light-Responsive #Chemistry #Interface-Dependent #Mechanica-Properties #Composites #ultraviolet #PHYSICS #NANOCOMPOSITES #TECHNOLOGY
https://onlinelibrary.wiley.com/doi/full/10.1002/admi.201800038
 
Basel in the spotlight: the city that learned to love LSD
https://www.theguardian.com/cities/2018/apr/19/basel-in-the-spotlight-the-city-that-learned-to-love-lsd-albert-hofmann
#Cities #Switzerland #Drugs #Europe #Science #Worldnews #Chemistry #Artanddesign #Art
 
Professor Michel Barsoum and colleagues have found scientific evidence that parts of the Great Pyramids of Giza were built using an early form of concrete, debunking an age old myth that they were built using only cut limestone blocks.
-> http://drexel.edu/materials/about/special/pyramids/
Major results of our paper

- The inner and outer casing stones of the Great Pyramid are not natural.
- The microstructure is consistent with a reconstituted limestone where the cementing
phase is either silicon dioxide or a Ca-Mg- silicate.
- The starting materials are believed to be diatomaceous earth, dolomite and lime.
- In other words, some of the blocks must have been cast in place.
The Great Pyramids of Giza; Evidence for Cast Blocks - by Michel W. Barsoum
→ Department of Materials Science and Engineering - Drexel University

Additional information: https://www.geopolymer.org/archaeology/pyramids/

#pyramids #egyptology #material-science #geopolymers #history
#chemistry #science #archaeology #engineering #architecture #news
 
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A chemistry lesson in Chinese 😀. This is a sign that shows chemical terms and with their name in Chinese. The last line is NO2 also known as Nitrogen dioxide. It has 1 Nitrogen atom and 2 Oxygen atoms. In Chinese it's 二氧化氮. #hongkong #chinese #chemistry #learnchinese
 
Hey, I'm #newhere. Excited about trying D* out. Any advice/recommendations? #rock #baseball #videogames #chemistry
 
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