DARPA’S Hypersonic Air-breathing Weapon Concept (HAWC) Achieves Successful Flight. The engine compressed incoming air mixed with its hydrocarbon fuel and began igniting that fast-moving airflow mixture, propelling the cruiser at a speed greater than Mach 5 (five times the speed of sound). darpa.mil/news-events/202…
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DARPA’S Hypersonic Air-breathing Weapon Concept (HAWC) Achieves Successful Flight. The engine compressed incoming air mixed with its hydrocarbon fuel and began igniting that fast-moving airflow mixture, propelling the cruiser at a speed greater than Mach 5 (five times the speed of sound). darpa.mil/news-events/202…
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Gonna be downvoted, but today I just realized WD-40 was a solvent and was a mixture of Aliphatic Hydrocarbons, not specified but according to a wired article, it was namely composed of Dodecane, Nonecane, tetradecane, and most helpful cyclohexane, could WD - 40 have a use as a nonpolar solvent?

Even if it,mean't those compounds had be vacuum distilled off, I'm just curious if anyone has tried, since no one has really asked this question, I mean naphtha is a mixture of hydrocarbons too, I know some compounds in WD - 40 make it troublesome, like I can't find it's freezing point, what do you guys think?

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16 ml of a hydrocarbon gas was exploded with excess of oxygen. On cooling, the volume of resulting gaseous mixture was reduced by 48 ml, When KOH was added, there was a further decrease of 48 ml in the volume. Find the Formula of the compound.

Help me pls

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Formation of Noncovalent Complexes between Complex Mixtures of Polycyclic Aromatic Hydrocarbons (Asphaltenes) and Substituted Aromatics Studied by Fluorescence Spectroscopy pubs.acs.org/doi/10.1021/…
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📅︎ May 08 2021
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Dental fillings from 13,000 years ago featuring hair, vegetable divers, and bitumen (hydrocarbon mixture found in asphalt).
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[Grade 10 Chemistry: Hydrocarbons] Does ethane react with hydrogen? How do I determine the volume of the initial mixture?
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👤︎ u/tomatorath
📅︎ Jul 24 2020
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Fun Fact: If you were ever able to use your sniffer in space, you'd discover that it smells like a mixture of hot metal, diesel fumes, and barbecue. That's all thanks to compounds called polycyclic aromatic hydrocarbons that emanate from dying stars. fun-x-facts.blogspot.com/…
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👤︎ u/meetandsex
📅︎ Aug 15 2020
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TIL That the first gas station considered was a pharmacy. The chemist sold ligroin to Bertha-Benz which was used to refuel the world's first production automobile, Ligroin is used as a laboratory solvent hydrocarbon mixture obtained from petrolium thats why it was available at a pharmacy. youtube.com/watch?v=vsGrF…
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👤︎ u/Asufa80
📅︎ Nov 13 2019
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COMBUSTION OF SHORT CHAINED HYDROCARBON MIXTURES CAN NOT CONVERT BEAMS OF IRON-CARBON ALLOYS TO THE LIQUID STATE OF MATTER

THIS AMUSING PROSPECT CAUSED AUDIBLE CONTRACTIONS OF MY VOCAL CHORDS.

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bitumen - A black viscous mixture of hydrocarbons obtained naturally or as a residue from petroleum distillation. It is used for road surfacing and roofing. oxforddictionaries.com/de…
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👤︎ u/TEKrific
📅︎ Aug 27 2015
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NMR using Earth’s magnetic field: Researchers conducted a proof-of-concept, ultra low-field nuclear magnetic resonance (NMR) experiment, in which a mixture of hydrocarbons and water was analyzed using a high-sensitivity magnetometer and a magnetic field comparable to that of the Earth newscenter.lbl.gov/2014/0…
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Thermodynamic models for freezing point estimation of multi-component hydrocarbon mixtures?

Alright /r/chemistry, time to find out what we're made of.

The title says it all. I've been working as a chemical engineer for nearly 20 years now. I've never come across this question, and have stumped a few professor friends with it over the past few weeks.

I know it's really tough to model freezing points of hydrocarbons (process simulators like Aspen or PRO/II steer clear of this), due to all of the bond interactions and the unknowns associated with creating the first few nucleation points.

Say I had a mixture of p-xylene (13C), m-xylene (-49C) and n-octane (-57C). I should be able to draw a ternary plot with a line on it, where this mixture freezes at X degrees, say X = -40C. For certain mol fractions, the mixture should freeze. Outside of experimentation, is there a reliable way to do this? Special software?

Thought I'd toss it out here, as I've been stumped on this one for a few weeks now. Any ideas?

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BP said it was the "unstable" cement mixture Halliburton used that allowed hydrocarbons to leak into the well. reuters.com/article/idUST…
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Looking for recommendations on GC/MS columns for separating n-alkane, alkene hydrocarbon mixtures.

My lab just inherited a DSQII GC/MS in my lab and I need to be able to separate a mixture of alkenes and alkanes. Having the ability to do liquid, vapor, and SPME injections would also be very useful. Does anybody have any recommendations for a column. The one that we currently have right now is a 30 m column and .25 mm ID. I am not in the lab right now and can't remember off the top of my head the other details about the column but it has horrible peak shape and we are seeing a lot of peak overlap which isn't very useful.

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Short-term effects of a perinatal exposure to a 16 polycyclic aromatic hydrocarbon mixture in rats: Assessment of early motor and sensorial development and cerebral cytochrome oxidase activity in pups (2014) ncbi.nlm.nih.gov/pubmed/2…
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What is the largest hydrocarbon you have seen/worked with?

I think most chemists have learned about the "smaller" hydrocarbons, up to around 20 atoms of carbon, in some form or another. We also learn about the greek roots to give the name for a general hydrocarbon of x carbon atoms, but I have rarely heard them being directly discussed. What is your experience with the larger hydrocarbons? Have you studied something on the order of Pentacontane, with 50 carbon atoms?

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YSK: A wood fire in the fireplace is extremely toxic for indoor air quality, and studies show just how much havoc they wreak on our health, especially for women and children.

The idea of huddling around a lovely warm fire with loved ones is so deeply and culturally ingrained that it can be very difficult to accept just how terrible it is for health. But the health risks are clear, and smoke from a wood fire damages your respiratory system and heart in a similar fashion to cigarette smoking. Light fires frequently enough and it can become much worse.

The Wikipedia summary perfectly describes how bad it is:

>With regard to adults, studies show that prolonged inhalation of wood smoke contributed to chronic bronchitis, chronic interstitial lung disease, pulmonary arterial hypertension and corpulmonale (Pulmonary heart disease), and altered pulmonary immune defense mechanisms. While adverse effects on adults are notable, children appear to be at greatest risk. Many studies that focused specifically on RWC [Residential Wood Combustion] have concluded that young children living in homes heated by a wood-burning stove had a greater occurrence of moderate and severe chronic respiratory symptoms than children of the same age and sex who did not live in homes heated with a wood burning stove. Exposure of preschool children living in homes heated with wood burning stoves or in houses with open fireplaces yielded these effects: decreased pulmonary lung function in young asthmatics; increased incidence of acute bronchitis and severity/frequency of wheezing and coughing; and increased incidence, duration, and possibly severity of acute respiratory infections. Residential wood combustion emissions also contain sulfur oxides, nitrogen oxides, carbon monoxide and potentially [carcinogenic](https://en.wikipedia.org/wiki/Carcinog

... keep reading on reddit ➡

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📅︎ Dec 27 2021
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[OC] Bubbleverse 5 - the Next Generation

The Next Generation

[First] [Previous] [Next]

From the Life Journal of Thwicca, Daughter of Saduk, as Translated into Earth Human ‘English’

Ever since I was quite young, I have been learning about the dangers inherent in merely venturing near humans. The very notion of visiting their home planet should have terrified me beyond reason or thought. But as I perambulated from the spaceport with Father, my tentacle firmly ensnared within his, my primary impression was how pretty it all looked. I recognised the blue sky from the image upon the wall in our home dwelling, portraying Father’s human friend Serena Hernandez in the process of blowing bubbles using a mixture of liquid dihydrogen monoxide and a chemical called ‘soap’.

Let me make myself absolutely understood. I do now, and always have, comprehended the danger posed to anyone of my species by what the average human would consider a comfortable environment. If I had not before, it would have been made clear to me when Father came home after the latest Tannarak incursion missing two tentacles. Not seared off by a Tannarak heat gun, but an incidental casualty of a skirmish which had seen Serena Hernandez melt half a mountain by way of released body heat, and then nearly freeze to death while wading through molten lava.

Mother, of course, was shocked and horrified by this, but the worst was yet to come. After Father’s tentacles were replaced by a combination of our science and theirs—constructed from lightweight but insanely temperature-resistant materials and mated to his nerve-web—the invitation had come for him to journey to Earth, just as Lieutenant Hernandez had come to Faz'Reep. As I understood matters, they wished to reward him for his part in saving Serena Hernandez’s life, at great risk to his own. To withstand the impossibly high temperatures, he was to be fitted with a heat-suit, more or less the precise opposite of what the redoubtable Lieutenant Hernandez had been wearing when she destroyed the Tannarak raiding party, saved Father from the avalanche, and created the newly named Serena Valley.

However, and this is where Mother’s lack of happiness came in, they wished to ensure Father’s safety and

... keep reading on reddit ➡

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👤︎ u/ack1308
📅︎ Nov 13 2021
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Vapor Pressure Confusion

Hi all. I'm a mechanical engineer working with issues related to vapor pressure in underground gasoline storage tanks. I have been trying to refresh myself on vapor pressure issues since I haven't really had to work with this since college. I am performing a pretty simple experiment and completely striking out in trying to understand the results. I am hoping that these are easily explained by someone who understands the physics here.

The experimental setup is as follows. I have placed 300 mL of gasoline (E10 unleaded) in a 1300 mL stainless steel vessel that is then placed in an environmental chamber kept at 20°C throughout. The lid of the vessel is tapped for a pressure transducer and a ball valve to vent pressure when desired. For initial conditions, the 300 mL of gasoline was placed in the vessel and the lid sealed. The remaining space is filled with air at 20°C and about 40% rh. Over time the pressure in the headspace rises as expected. I didn't let the vapor space reach saturated vapor pressure on the first rise as measuring that wasn't the subject of interest. After a time, the pressure in the vessel was vented through the ball valve, releasing a mixture of the gasoline vapors and the air from the initial conditions. This time I left the vessel undisturbed overnight and the pressure reached an equilibrium pressure roughly half of what it was when I vented. This was expected from prior experience. I thought that this might be explained by the fact that gasoline is a mixture of hydrocarbons with different volatilities and that I had been evaporating off the light ends of the mixture. This procedure of venting and waiting for the vapor pressure to rise was repeated several times with the equilibrium pressure in the headspace dropping each time. I have a graph of the pressure vs. time here. https://imgur.com/5c0mego. The two small upsets in pressure come from injecting a mall 45 mL of air into the chamber (1st upset) and then removing 45 mL of gasoline and replacing with 45 mL of air (2nd upset). The last thing that I did was to open the top of the vessel to allow an exchange of some of the gasoline vapors for air. After this venting and exchange, the vapor pressure again rises rapidly with the curve matching the original.

My reading on vapor pressure suggests that the saturation vapor pressure is an equilibrium between the liquid and vapor phase of the hydrocarbons in the gasoline. My understanding is that this should be

... keep reading on reddit ➡

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👤︎ u/madHatch
📅︎ Jan 08 2022
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Canaccord Genuity raise PANR target price to 200GBX pre-drill and from 417GBX to 1300GBX beyond.

Broker note released today - 14th Dec 2021. All these targets are based on $1 per barrel in the ground, which even they admit is well below the most recent valuation metric of $3.1 per barrel paid by OilSearch. Thanks to scot126 from the ADVFN thread.

**********************************************************************************

"Wide ranging and high impact newsflow in 2022"

Canaccord Genuity view

Pantheon has raised $96m (upscaled from $70m) to provide the funding necessary for an extended, varied, and very high impact operational programme in 2022. We expect operations to begin very soon, and to include the drilling and testing of two/three new wells and the testing of a previously drilled well, at its 100% held licences onshore Alaska. We see a number of key attractions to the programme including:

Large Scale: Targeting c.2 bnbbls net resources. Excellent location: Onshore Alaska, close to oil services, road access (Dalton Highway), and crude oil export via Trans Alaska Pipeline.

Catalysts: Numerous, starting early Q1, lower risk exploration to appraisal. Drilling and testing two new wells (Theta West-1, Alkaid-2H), testing four zones in Talitha#A well, with a longer-term Alkaid test to include oil sales. A fourth well, at Alkaid, is likely to be added following the upscaled raise.

In our view, this comprehensive and very exciting programme could result in a significant uplift in market valuation and a considerably raised industry profile, which in turn could lead to a potential farm-out or sale.

2022 Operational plan:

Talitha#A (Q1 22, $11m): Test, using a coiled tubing unit, four hydrocarbon zones found in Q1 2021 well. Should provide valuable information about several reservoirs that will not be tested elsewhere in 2022.

Theta West (Q1 22, $17m): 10.5 miles NW of Talitha, targeting thicker, higher quality Basin Floor Fan reservoir. Success, especially in the lower BFF, could prove up >1bnbbls recoverable resources, anddramatically shift market view of value.

Alkaid-2H (H2 22, $23m): A horizontal well and longer-term test of the deeper reservoir (previously successfully tested in Alkaid-1) to include trucked oil sales. Success could substantially underpin current market value.

Funding - total $96m:

Convertible bond: $55m five a fiveyear period amortising at 5% of initial principal/quarter, coupon 4%, both

... keep reading on reddit ➡

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📅︎ Dec 14 2021
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The Embassy's Crater 6 – Humans do big gardening

At the Embassy Reception Hall:

The reception so far was a success, the fact that the reception hall was wrapped around the highest part of the embassy building and it offered, 360 degrees of view of the entire crater, the lake’s water and island.

This left a great impression on all the dignitaries as they wandered from view to view while sipping on their drinks. Of-course there were a few minor problems. Stopping members of different races from drinking mixtures that could kill them was one problem where they listened to the embassy staff. But the ones who could drink small amounts of certain drinks were the real problem. Especially the Troikains ambassador who because he could drink some alcohol kept insisting on trying the really strong drinks, even when it was pointed out that drinks like Vodka, high proof Rum and other strong drinks would cause a medical emergency.

Of-course the cream of the event was the Emperor and his party of nobles as they walked slowly around the reception hall commenting on the view of so much open land outside the Emperor’s own holdings. The ambassador not only could see the Emperor was impressed but also he could see the glances his way from the various nobles where even the greatest of them have only a fraction of the acreage of the crater to their clan’s name.

As expected as the ambassador waited on the Emperor’s pleasure to call on him when the Emperor wanted to talk to him, another noble silently slid up to him.

“Impressive.”, the noble started out, “Is it really safe to walk out there?”, he asked.

The ambassador had done this dance before a dozen times with other nobles.

“Only on the island. It was mostly rock so it was very easy to decontaminated. You can go anywhere on this island but the lake water is still not safe.”, he finished.

“Well, what about all those plants you have covering the entire crater floor, I mean I understand they are making the soil safe everywhere inside the crater?”, the noble asked.

The ambassador fought a sigh again as he had to give to same explanation once again. He wished one of the people under him could do the explaining but the nobles insisted in only talking to the most important person in the embassy.

“The present ground cover serves two purposes, (one) it prevent the contaminated soil being blow out of the crater, which is why no-one builds near the crater. Once we prove our bio-tech works I expect we will sell a lot to the surrounding estates that want to get full use of

... keep reading on reddit ➡

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📅︎ Dec 03 2021
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SERIOUS: This subreddit needs to understand what a "dad joke" really means.

I don't want to step on anybody's toes here, but the amount of non-dad jokes here in this subreddit really annoys me. First of all, dad jokes CAN be NSFW, it clearly says so in the sub rules. Secondly, it doesn't automatically make it a dad joke if it's from a conversation between you and your child. Most importantly, the jokes that your CHILDREN tell YOU are not dad jokes. The point of a dad joke is that it's so cheesy only a dad who's trying to be funny would make such a joke. That's it. They are stupid plays on words, lame puns and so on. There has to be a clever pun or wordplay for it to be considered a dad joke.

Again, to all the fellow dads, I apologise if I'm sounding too harsh. But I just needed to get it off my chest.

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📅︎ Jan 15 2022
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Incense linked the dementia

Hey I’ve been cleansing my practice because I’m doing fertility treatments (switched to beeswax candles, limiting what essential oils I use) and I stumbled on this. The study was on older adults, but imagine if you’re doing daily incense for decades, it might be worth looking into!

I just had to share cause I love you. Stumbled on this study:

https://www.nature.com/articles/s41598-020-63568-6.pdf?proof=t+target%3D

“Incense burning is a religious ritual commonly practised in many cultures and is popular among older adults. Incense comes in many forms, with ‘joss sticks’ being the commonest choice for home use (Fig. 1). Incense is made up of a mixture of fragrance materials and herbal, wood and adhesive powder1. When incense is burnt, pol- lutants including particulate matter (PM), carbon monoxide (CO), carbon dioxide (CO2), sulfur dioxide (SO2), nitrogen dioxide (NO2), volatile organic compounds, aldehydes and polycyclic aromatic hydrocarbons (PAHs) are released into the air1,2. Incense burning is considered a major source of indoor air pollution; the amount of PM generated by incense can be up to 4.5 times of that by cigarettes2. Incense smoke is associated with carcinogenic- ity, increased cardiovascular mortality and respiratory conditions1,3–5. Although there is currently a lack of pub- lished data showing a direct link between incense burning with cognitive and brain health, air pollution research suggests that pollutants emitted from incense smoke are associated with accelerated cognitive aging, intellectual decline and an increased risk for Alzheimer’s Disease (AD) and vascular dementia6–11. Moreover, long term expo- sure to air pollution is associated with smaller total brain volume and volume in prefrontal cortex, white matter and associations areas in frontal, temporal regions and corpus callosum. It is also related to the development of vascular pathology including covert brain infarcts, white matter hyperintensities (WMH, a marker of cerebral small vessel disease [SVD]), enlarged Virchow-Robin spaces, gliosis, atherosclerosis and a faster progression of carotid intima-medial thickness9,10,12–14 and increases risks of strokes and vascular cognitive impairment (VCI)15. The objectives of this study are to investigate, in older adults free of stroke and dementia,

  1. the effects of household indoor incense burning upon cognition over 3 years;
  2. the effects of indoor incense burning upon structural MRI markers of SVD (WMH and lacune) and medial t
... keep reading on reddit ➡

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📅︎ Nov 17 2021
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Molten Iron with CH4 injection to generate hydrogen. Any thoughts on side reactions?

I understand that molten iron will dissolve something like 6.5% carbon (if carbon is present). And if a hydrocarbon, say CH4, is injected into a melt, that the carbon will be extracted and hydrogen released (referred to as pyrolysis). Then that molten mixture can be injected with oxygen to release the carbon as CO, and perhaps recycle back to the first step. Is this remotely possible? A professor I spoke with told me that the hydrogen would be released, but would dissolve in the iron also. But I've heard a different story from another professor. Maybe someone on this forum has some thoughts on whether this is feasible (even if the mechanics are difficult to control)? If not obvious, the focus here is on "decarbonization", and whether metallurgy has anything to offer for use of hydrocarbons for extracting energy, but minimizing the release of carbon.

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📅︎ Nov 24 2021
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Butcher Block Board Cream for Lube

Hi all. I was wondering if using this stuff for lubing the threads would be okay. The only ingredients are natural unbleached beeswax and food grade mineral oil.

I saw these two posts below which both make it seem perfectly acceptable. I just didn't want to buy lube if I can just use this stuff. I have a bunch of it! Thanks.

"I like a furniture wax, for stainless and anodized and bare aluminum. It is a mixture of carnauba wax, bee’s wax and orange oil, Howard Fee-N-Wax, Wood Polish & Conditioner. It is similar to their chopping board oil, so I don’t think it will be bad for skin. I have tried Super Lube but it doesn’t seem to reduce friction as much. For a thinner lubricant, mostly for clean up, I use a bicycle chain lubricant. What I have from the nearest bike shop is Finish Line, Ceramic Wet Lube. It has boron nitride, as a substitute for graphite that isn’t black. Perhaps a dry lube would be better if you don’t clean it as much as I do. A carnauba based floor wax such as Tree Wax might work well, but I haven’t tried it on flashlights. It works well for doors and aluminum window frames."

https://budgetlightforum.com/node/45124

"So many choices, but there are basically only 2 types:

hydrocarbon based (petroleum) silicone based HYDROCARBON Vaseline/petroleum jelly Mineral oil Food oils Waxes like paraffin and beeswax Super Lube Nyogel Nano Oil

SILICONE The greases sold by most flashlight brands Plumbing and scuba greases, I hear

YES, the beloved Nyogel and Nano Oil are petroleum-based. Don’t take my word for it, here’s the MSDS of Nano Oil: http://www.nano-oil.com/Nano-Oil_MSDS_NLNA-5-10-85_20070415_.pdf(link is external)

  • Highly Solvent Refined Paraffinic Petroleum Oil
  • Extremely Hydrotreated Heavy Naphthenic Mineral Oil
  • Detergent, Inhibitor & Dispersant System Highly refined Mineral base Stock distillates So those o-rings that work with Nano Oil? I think they’ll be fine with vaseline."

Link to post: https://budgetlightforum.com/node/58305?page=2

Here's the link to the Board Cream:

https://www.amazon.com/John-Boos-Block-BWCB-Butcher/dp/B002HDT9FK/ref=mp_s_a_1_18?crid=1GXRBYFQ4WNRI&keywords=Beeswax+mineral+oil+wood&qid=1639255266&sprefix=beeswax+mineral+oil+wood%2Caps%2C105&sr=8-18

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👤︎ u/KoblinV3
📅︎ Dec 11 2021
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Blind Girl Here. Give Me Your Best Blind Jokes!

Do your worst!

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📅︎ Jan 02 2022
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This subreddit is 10 years old now.

I'm surprised it hasn't decade.

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📅︎ Jan 14 2022
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Dropped my best ever dad joke & no one was around to hear it

For context I'm a Refuse Driver (Garbage man) & today I was on food waste. After I'd tipped I was checking the wagon for any defects when I spotted a lone pea balanced on the lifts.

I said "hey look, an escaPEA"

No one near me but it didn't half make me laugh for a good hour or so!

Edit: I can't believe how much this has blown up. Thank you everyone I've had a blast reading through the replies 😂

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📅︎ Jan 11 2022
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What starts with a W and ends with a T

It really does, I swear!

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📅︎ Jan 13 2022
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Why did Karen press Ctrl+Shift+Delete?

Because she wanted to see the task manager.

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👤︎ u/Eoussama
📅︎ Jan 17 2022
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So 2 trees got arrested in the town I live...

Heard they've been doing some shady business.

👍︎ 7k
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📅︎ Jan 18 2022
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What is a a bisexual person doing when they’re not dating anybody?

They’re on standbi

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📅︎ Jan 12 2022
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What is the scariest tree?

BamBOO!

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📅︎ Jan 18 2022
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Amrud/Guava - Health benefits, application, chemical constituents, side effects and many more

AMRUD (GUAVA)

Guava which is commonly known as Amrud, is a fruit with a sweet and a slight astringent taste. It is a small tree belonging to the myrtle family (Myrtaceae). Native to tropical areas from southern Mexico to northern South America, guava trees have been grown by many other countries having tropical and subtropical climates.

It has anti-oxidant, antiviral, antibacterial, antiinflammatory, Anti-diarrhoeal, Anti-hypotensive, Analgesic & Anti-hypertensive, Antifungal, Antipyretic property.

It has different names in different languages such as in English(Guava), Marathi(Jamba, Jambh, Peru), Hindi(Amrood), Gujarati(Jamrud, Jamrukh, Peru), Kannada(Gova, Jamaphala, Perala, Sibi, Sebehabbu), Bengali(Goaachhi, peyara),  Ma..................read more

Guava fruit discription

Guava fruit generally have a pronounced and typical fragrance. Guava pulp may be sweet  or sour, tasting something between pear and strawberry, off-white ("white"  guavas) to  deep pink ("red" guavas), with the seeds in the central pulp of variable number and hardness, depending on species. The fruits a...................read more

Vitamin and mineral content

Vitamin : B1, B2, B3, B5, B6, B9, C, K, A

Mineral : Calcium, Iron, Magnesium, Manganese, Phosphorus, Potassium, Podium, Zinc, copper

• It has more vitamin C than the orange.

• Guava contains a large number of antioxidants and phytochemicals including essential oils, polysaccharides, minerals, vitamins, enzymes, and triterpenoid acid alkaloids, steroids, glycosides, tannins, flavonoids and saponins.

- Guava contains a higher content of vitamin C and vitamin A.

- Guava is also a very good source of the pectin which is an important dietary fiber.

- It has high content of flavonoids, fructose sugar and carotenoids.

- There are 41 hydrocarbons 25 esters, 13 alcohols and 9 aromatic compounds in guava

• The strong pleasant smell of fruit is credited to the carbonyl compounds.

• Guava fruit contains terpenes, caryophyllene oxide and p-selinene in large quantity which produce relaxation effects.

- The skin of fruit contains ascorbic acid in very h.................read more

Benefits, uses and application

  1. It is used as food and in the preparation of food products. It is also used in house construc
... keep reading on reddit ➡

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📅︎ Dec 12 2021
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The Long Game: Chapter 15 - Afterglow

Back on the ship after his surprisingly brief fight with the slime, Fred quickly found himself oddly bored.

The message Lady Vris had left for him was that she would return ‘later’, her having to attend several victory parties to celebrate her soon-to-be rise to fame and victory in the tournament.

At first Fred found himself relieved, relaxing for a bit, then busying himself in the white room: He had a lot of things on his to-do list, like making a functioning flame thrower, plus addressing all the other issues he’d run into during the tournament.

His fight with the chicken-rex, which Ish said was called an Igitrix, had very much so highlighted Fred’s lack of range options. The slime had also presented certain challenges that he hadn’t quite expected – mainly because Fred knew damn well that he’d gotten damn lucky in having picked some chemicals that just happened to react with the thing.

Considering his arsenal, and his whole idea of using a long spear tipped with explosives, then the igitrix had revealed a great flaw in that choice of main armament: Having pierced the thing’s foot and exploded into the air had more or less completely wasted.

The obvious solution seemed to be more ranged options: A grenade launcher seemed like a good solution, but he’d need to figure out how to make functional quick-release valves if he was to make weaponized potato guns.

Pouring through the engineering literature he’d scanned while back home, plus the stuff from the university library, Fred kept himself busy. He didn’t want to think about him having blown off his legs, or how he might have ended up if the slime had gotten hold of him… or if the charging space bull had managed to power through the caltrops. Come to think of it, then he’d actually been in all kinds of danger… and gotten his legs blown off, though he didn’t really remember much from that. There wasn’t even a real scar or anything.

Hours turned into a whole day. Fred made some nice head-way in figuring out how to make quick-release valves, as well as making a simple pressure gauge. With all that figured out he could make his first prototype flamethrower, having produce a big twenty-litre steel tank that he filled with the reasonably refined crude oil product he had made earlier. The stuff wasn’t in any way ‘pure’ enough to be called diesel or gasoline, instead being a mishmash of all kinds of hydrocarbons, but it wasn’t remotely as thick as pure crude – it had the consistency of buttermilk.

Filling t

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Geddit? No? Only me?
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I wanna hear your best airplane puns.

Pilot on me!!

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Refutation of flood geology.

I am not much informed about geological process but I notice religious people are trying to propogate their own brand of ’science’. A good argument against the YEC flood model is mud cracks that can’t possibly form underwater.

However, some have taken deal with this and try to write articles to convince their audience otherwise. Note: I am asking for others to share opinion and best refutation as don’t know much about this.

YEC claim.

”Mud is the familiar wet and sloppy stuff that children love to play in. Geologists give it a more formal definition: a mixture of water, silt, and clay that may be either semi-fluid or soft and plastic. The conversion of mud to mudstone involves, primarily, a loss of water. Loss of water, in turn, results in shrinkage cracks. Water expulsion from mud is actually a matter of intense interest to oil explorationists, whose job is to try to track the history of fluid movements in the subsurface (including both water and hydrocarbons). There is much that is not understood about the process. "Shrinkage cracks" that form when muds give up their water can form in at least three kinds of settings:

  1. Mud cracks that form under the open atmosphere ("sub-aerial"). These are the common cracks of dried mud puddles: they are called "desiccation cracks." Shrinkage takes place when water is driven into the atmosphere by evaporation. The resulting cracks often form a polygonal pattern (individual polygons may reach 300 meters across) and are typically v-shaped profile (can be 15 meters deep). In some cases, but certainly not all, mud curls (either upward or downward) can form between the cracks; these can be picked up and redeposited if the surface is flooded.

  2. Mud cracks that form underwater (sub-aqueous). Syneresis is a term used by chemists to describe the separation of liquid from a gel (as in cheese making). Its importance as a process for dewatering muds has been known by geologists for over 70 years. "Syneresis cracks" are known to form in the muddy bottoms of some lakes, settling ponds, and even in lime muds beneath shallow marine waters in the Bahamas. Water loss is driven by osmosis, and so it is especially known to occur in saline lakes (immerse your hands long enough in a salty brine and you will get cracks of the same kind). Unless mud curls are present, these are extremely difficult to distinguish from desiccation cracks.

  3. Mud cracks that form while buried (sub-stratal). This kind of crack is generated when a mu

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[OC] Bubbleverse 5 - The Next Generation

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From the Life Journal of Thwicca, Daughter of Saduk, as Translated into Earth Human ‘English’

Ever since I was quite young, I have been learning about the dangers inherent in merely venturing near humans. The very notion of visiting their home planet should have terrified me beyond reason or thought. But as I perambulated from the spaceport with Father, my tentacle firmly ensnared within his, my primary impression was how pretty it all looked. I recognised the blue sky from the image upon the wall in our home dwelling, portraying Father’s human friend Serena Hernandez in the process of blowing bubbles using a mixture of liquid dihydrogen monoxide and a chemical called ‘soap’.

Let me make myself absolutely understood. I do now, and always have, comprehended the danger posed to anyone of my species by what the average human would consider a comfortable environment. If I had not before, it would have been made clear to me when Father came home after the latest Tannarak incursion missing two tentacles. Not seared off by a Tannarak heat gun, but an incidental casualty of a skirmish which had seen Serena Hernandez melt half a mountain by way of released body heat, and then nearly freeze to death while wading through molten lava.

Mother, of course, was shocked and horrified by this, but the worst was yet to come. After Father’s tentacles were replaced by a combination of our science and theirs—constructed from lightweight but insanely temperature-resistant materials and mated to his nerve-web—the invitation had come for him to journey to Earth, just as Lieutenant Hernandez had come to Faz'Reep. As I understood matters, they wished to reward him for his part in saving Serena Hernandez’s life, at great risk to his own. To withstand the impossibly high temperatures, he was to be fitted with a heat-suit, more or less the precise opposite of what the redoubtable Lieutenant Hernandez had been wearing when she destroyed the Tannarak raiding party, saved Father from the avalanche, and created the newly named Serena Valley.

However, and this is where Mother’s lack of happiness came in, they wished to ensure Father’s safety and so offe

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