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Although the U.S. never reached the same degree of aviation production experienced by their European counter-parts countries during World War I, starting in 1920 numerous changes were made that resulted in the Air Force becoming a major military organization in time to help the United States prevail in World War II. |
japanese learning essentials android app |
1. R |
My Japanese Learning App |
Hey guys, I need your support. I'm an indie developer and at the same time I'm learning Japanese. I've just uploaded my first app and I need your feedback to make it better. The app is about learning Japanese. I'm currently making more contents for future updates. I'm not sure if I'm allowed to... |
Energy Literacy 101 – The Energy Equation for Obesity |
The Harris Benedict equation for BMR |
The Harris Benedict equation for BMR |
Here’s a lighter one for a change. No politics, no grand solutions to grand problems, just a playful way to extract a life lesson or two (it will require some elementary maths though): |
If one purpose of this blog is to make me and you more literate in sustainability “beyond green”, Energy Literacy must be a part. We need our intuition, because our language is full of sustainability terms that don’t mean a thing! “Carbon footprint”, or “food miles” are my favourites. |
Imagine someone saying “the carbon footprint of an Audi is X. Depending on the audience, we can visualize them nodding or disagreeing violently, but not one will question whether this statement means anything at all: But that is the question we must ask, because you can put almost any number for X, depending on what “c... |
• Does it mean CO2 emissions? |
• If yes, who is the user and their driving pattern? |
• Do we include the energy put into producing the Audi? |
• If yes, do we include the energy put into producing the materials? |
• If yes, do we factor in whether that energy was renewable or not? |
• How do we handle other emissions? [1] |
X becomes meaningless if we simply assume “carbon footprint” is a well-defined term. It isn’t. An environmental activist will give you one number, and the marketing head of Audi another, and both are right in their own little world. “Carbon footprint” by itself is a term that most often is meant to obfuscate, not educa... |
What matters, is sustainability thinking, not sustainability talking. Going back to basics, most sustainability thinking is first and foremost about “effortless action”, which is the art of getting the most of a desirable outcome (diversity, health, well-being) with a minimum of effort (resources, time, energy) and was... |
So let’s start our tour towards energy literacy on the most human of scales: With the kcal or “food calorie”. |
One kcal is the amount of energy needed to raise the temperature of 1kg of water by 1 degree Celsius. |
One kcal equals approximately 4,200 J (“Joule”). One Joule (the proper metric unit of energy) is the energy expended by moving something with a force of 1N (Newton) by a distance of 1 meter. Our intuition of force will require us to use the weight of one kilogram, which equals 9.81N. |
1 kcal (4,200 J) will lift a weight of 85kg by 5m (because 85 x 5 x 9.81 = aproox. 4,200). If that is your weight and you climb 5m, you have expended 1 kcal of physical work. However, the bio-mechanical efficiency of your body is only around 20-25%, so you actually “burn” 4-5 kcal of food energy for every kcal of actua... |
On top of the bio-mechanical (in-)efficiency of your body, there’s the effect that you don’t use all your (food) energy to actually do stuff. Far from it. You actually burn most of your food just keep you alive, i.e. to metabolize (breathing, blood circulation, brain activity, keeping at the right body temperature, re... |
1,860 kcal, the base metabolic rate would be enough to lift that person by 9,370m (=7,800,800 J/ 85 kg / 9.81 m/s2), more than from the sea level to the top of Mt. Everest. Even with the limited bio-mechanical efficiency of the body, that person would have to climb some 2,000m (6,000 ft) or more just to burn his daily ... |
For the average person, the work they perform in a day is maybe a fifth of a 2,000m climb, (if that!) so we can guess that 15%-20% of your food intake is used to move around and do work. |
Is that intuitive? Well, it depends. How much more do you eat on a long day of hiking vs. on a day in the office? Probably less than twice the normal amount, so you see that even almost continuous work all day will raise your food intake by less than what it already is normally. Doing physical work will never massively... |
It is said that Olympic swimmers burn at most 5,000 kcal a day during peak practice, more than perhaps any other sport demands, and even that is just over twice the BMR. |
Now, use your newly acquired intuition: To fight obesity, should we try to get people to (a) exercise more, (b) eat less? |
Our examples show that for a relatively average person, a doubling of your physical work every day is equivalent (in terms of energy balance) to eating just about 15% less. What is easier: Cut that Mars bar (242kcal) from your diet, or climb 242m (80 flights of stairs)? I know what I would opt for! (hint: the thing tha... |
But there is more fun stuff we can do with the Harris Benedikt equation above. |
It says that for men, the base metabolic rate goes up with weight, by 13.5 kcal per kg of body mass, and for women this figure is 9.5 kcal / kg. So if you eat one Mars bar (242 kcal) too many every day, then as a man your weight will stabilize at some 18kg higher than it should (for at that point your body will need th... |
Another game with that weight/BMR relationship: if one flight of stairs equals 3 kcal (for a man) and call it 2.3 for a woman, say (because of lower average weight), then climbing just 4 flights per day will lower your long-term weight by almost 1kg. That is worth a thought, no? [3] [4] |
The fun part in all of this for me is that we did not need to do any nutritional science here, just simple maths, simple energy balances. I highly recommend playing around with these equations. It’s a great example of “effortless action”: not doing much, but what you learn may improve your well-being. |
[1] This alone can cause huge differences, even up to factors of 10 or more. You can count them as “CO2-equivalent”, meaning you count as much CO2 as would be “needed” to make the non-CO2 emission as potent as CO2 emission. You can count them 1-for-1, or not at all. All these conventions are used and mixed in practice. |
[2] It is because I believe that sustainability is ultimately, and most often about “effortless action” that I believe the captains of finance and industry, the leaders and managers in the real world, are so well equipped to do well in the sustainability sphere once their attention and goals are directed properly: beca... |
[3] This is because your body has to “find” the missing 13.5 kcal somewhere, and it does it by starting, until the BMR has shrunk by 13.5 kcal through weight-loss (which, according to the equation, happens after 1 kg of weight loss). |
[4] For completeness, we can also estimate how long it may take you to get there, and it is a somewhat depressing analysis. One kg of fat has 9,000 kcal. To lose that much, by saving 9 kcal a day (as in the case of a woman climbing four extra flights of stairs a day) would take 1,000 days or almost three years. Definit... |
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Showing posts from 2016 |
Goose-y Ways (Google, Siri, Waze) |
This post is not about the migration of geese. Rather, it's about the migration of humans who use Google Maps, Siri (Apple Maps), and Waze. |
Google Maps, my preferred app, recently went squirrelly on me, suggesting routes that didn't make sense. It recovered the next day, but the episode was enough to make me reconsider Waze and Apple Maps. |
Waze filled in admirably, but it was not without its quirks. I liked that I could send my route and ETA to someone I intended to pick up. Waze would also automatically text the person when I was about five minutes away. |
The very social nature of Waze, however, makes the screen busy. While Google Maps can be summed up as no nonsense cartography, Waze has a whimsical side. I don't use Waze's options to report accidents, police presence, or red light cameras. Once you begin reporting hazards on the road, you become that hazard on the ... |
The IPK was specifically fashioned from an alloy of 90% platinum and 10% iridium for its virtual immunity to oxidization, and because it’s extremely hard-wearing. The international prototype is a cylinder of 90% platinum and 10% iridium, and due to the massive density of platinum it’s just 39.17 millimeters (1.54 inche... |
The drifting weight of the international prototype kilo and its copies |
The drifting weight of the international prototype kilo and its copies |
Weirdly, it’s not even known if the IPK is getting lighter, or if the national prototypes are getting heavier — but either way, something is causing these kilos to change weight, by around 50 micrograms every 100 years. This is a problem, because the weight of the IPK is the kilo. If the IPK changes, as does the value ... |
There are some proposed reasons for the weight discrepancy, but in short we still don’t really know why. It is likely due to microscopic surface effects, such as absorption of hydrogen, or perhaps mercury from the proximity of mercury-based instruments in scientific labs when the IPK and its copies are weighed. Some wa... |
NIST's watt balance instrument, for redefining the kilo in terms of Planck's constant |
NIST’s watt balance instrument, for redefining the kilo in terms of Planck’s constant |
The Planck constant describes the relationship between the energy of a particle/wave (photon), and the frequency of EM radiation that it emits. By using the meter and second — two other SI units that are defined by constants of nature — the kilo can be defined by Planck’s constant. The only problem is that we don’t act... |
Now, Patrick Abbott at the National Institute of Standards and Technology thinks he’s come up with a way of ascertaining Planck’s constant. Using a very strong vacuum, so that there’s no contamination or outside influences on the laser interferometry, and an instrument called the watt balance, Abbott says he and fellow... |
Now read: Humans are slaves of electricity |
Research link: “The Important Role of Vacuum Technology in the Redefinition of the Kilogram” on October 28 at the AVS 60th International Symposium and Exhibition |
[Image credit] |
Commercial Coating |
Durability: Powder coatings possess incredible resistance to abrasion and corrosion, especially compared to liquid coatings. Additionally, many companies add compounds to their powder coatings to enhance anti-corrosive or anti-abrasive properties, maintaining the quality of the coating for a longer period. |
Longevity: The quality of a powder coating lasts for years, remaining bright and vivid with less fading over a longer period. Regardless of UV radiation and use, the quality of your powder coating will remain. |
A Random Day To La Union |
My good friend, Margaret and I decided to head to La Union one day due to a random day being unscheduled for school. Here’s our trip! |
Our first stop was at the golden, Ma-Cho Temple. I’ve been here before and I honestly enjoy visiting this place due to its rich Chinese heritage and its clean area. |
Our next stop was the lighthouse located in Poropoint. What made this place special to me was that it was quite at the middle of nowhere and sits right besides the shore line. It had this abandonment vibe since nobody was around and that the house right beside it was ancient. |
My favorite part of La Union is its wavy sunset that always hits me, the beach is the way to go for any ocean lover. The colorful sunset will always have a place in my heart. |
3 Replies to “A Random Day To La Union” |
1. wow, I’m going to Ph fo my winter holiday and Macho-Temple is on my list. Thank you for sharing but I have few questions 1. Is it near the highway? 2. Do they have entrance fee? 3. Is it worth it? Thank you 🙂 |
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How barn dance you discover each one audio logs in odst? |
mp3gain should be converted from the format it's surrounded by (sometimes a crushed one mp3, aac, vorbis, or wma) inside the format utilized by audio CDs (which is uncompacted). This information should then carry on appropriately written to a CD. though the music on CDs is digital knowledge, it is written differently t... |
You can't, Itunes music is a safe support format only accessible by way of apple made audio/video gadgets and authorized computers. |
Software: USB Drivers* BitPim (Google scour to get hold of current model) Audio modifying and converting train |
Audio & RecordingAmplifiersMicrophonesKaraokeRecording gear & DJ GearMore devices TypeBrass instrumentschain devicesWoodwind devicesDrums & Percussion |
Click the row identify field, sort a pilaster name for the recorded blare, and then click save to avoid wasting the recorded clatter as an audio string. |
MPEG-fouris a method of definingcompressionof audio and visual (AV) digital information. It was launched in postponed 1998 and designated astandardfor a gaggle ofaudioandvideo codingformats and associated technology agreed upon by the use of theISO / IEC shifting picture consultants assembly(MPEG) ( ISO/IEC JTC1 /SC29/... |
Latest Audio evaluations and Popinions |
Make certain you've got an audio input device, equivalent to a microphone, related to your pc. |
What are the benefits and drawbacks of digital audio? |
To add MP3GAIN , pass through toSpecial:Uploadwhere you'll find a type to upload one. |
How shindig you add audio to my web web page by way of free? 1,zeroseventy seven,128questions on Wikianswers Add New web page Edit Edit sourceHistoryTalk zeroThis question is awaiting a solution...Please depart this field blank until you might be answering the question. don't ask questions you already know the reply to... |
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Thursday, 25 July 2013 |
p.Story - Josef Stalin's Chicken |
The last part is here: Story - Sylvester Stallone |
Josef Stalin was a bastard in his days. He was the de facto leader of the Soviet Union from the mid-1920s until his death in 1953. His story was one of disgust and lack of humanity. But, his story was not unique. His story was the main basis that this blog is based on. The Animal Farm. 1984. He single-handedly butchere... |
Stalin's Quotes |
“It is enough that the people know there was an election. Those who vote decide nothing. Those who count the vote decide everything.” |
“History has shown there are no invincible armies.” |
“Gratitude is an illness suffered by dogs.” |
“I believe in only one thing, the power of human will.” |
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