Weight of galvanized steel sheet
Galvanized steel sheets have various applications in construction, agriculture, industry, advertising industry, etc.
In order to avoid cooperation with unscrupulous companies and companies selling sheet metal, it is necessary to clearly know the weight of galvanized sheet steel. It can be calculated using simple mathematical calculations.
Formula for calculating the weight of galvanized steel
M=M1+M2, where M is the final weight of the galvanized sheet (kg), M1 is the mass of iron (kg), M2 is the mass of zinc (kg).
In this case M1= t1*l1*h1*p1,
- where t1 is the thickness of the iron sheet, (mm). When calculating, it is necessary to take into account that the thickness of the iron is 0.05 millimeters less than the finished product for the first class of zinc coating and 0.03 millimeters less for the second class;
- l1 - length of iron sheet, (m);
- h1 - width of iron sheet, (m);
- p1 is the density coefficient, for iron equal to 7.85 t/m3.
М2=t2*l2*h2*p2
- where, t2 is the thickness of the zinc layer (depending on the class, where the 1st class has a thickness of 0.0381 mm, and the 2nd class - 0.0216 mm);
- l2 - length of coating, (m);
- h2 - coverage width, (m);
- p2 - zinc density coefficient equal to 7.13 t/m3.
As an example, let's calculate the weight of a galvanized sheet with standard dimensions 1000x2000mm, 0.5mm thick with class 1 zinc coating.
M= 0.45*1*2*7.85+0.0381*1*2*7.13=7.608 kg
Thanks to such calculations, it is possible to quite accurately calculate both the weight of one sheet and the total number of sheets of the purchased batch. Such calculations will allow you to check companies selling galvanized sheets and rid yourself of companies that make money on the air. Similar formulas should be used not only when calculating the weight of steel, but also such values as the density of bricks and the volume of foam plastic.
We have already understood that the choice of galvanized steel sheets needs to be approached as carefully as possible, so as not to waste money. The advertising industry also often uses SFG supports, without which the installation of overhead cable wiring, installation of banners and installation of street lighting seems to be a rather complicated process. Therefore, we recommend using high-quality SFG supports for high-quality operation of structures.
Table for calculating the weight of galvanized steel sheets in 1t
Thickness of galvanized steel, mm Number of m2 in 1 ton of galvanized steel Weight of 1 m2 of galvanized steel, kg| 0,40 | 299,40 | 3,34 |
| 0,45 | 267,92 | 3,73 |
| 0,50 | 242,42 | 4,13 |
| 0,55 | 221,36 | 4,52 |
| 0,60 | 203,67 | 4,91 |
| 0,65 | 188,60 | 5,31 |
| 0,70 | 175,59 | 5,70 |
| 0,75 | 164,2 | 6,09 |
| 0,80 | 154,32 | 6,48 |
| 0,90 | 137,65 | 7,27 |
| 1,00 | 124,22 | 8,05 |
| 1,10 | 114,09 | 8,83 |
| 1,20 | 103,95 | 9,62 |
| 1,50 | 83,51 | 11,97 |
| 2,00 | 62,89 | 15,90 |
| 2,50 | 50,45 | 19,82 |
Calculation table for galvanized steel with polymer coating
Thickness of galvanized steel with coating, mm Number of m2 in 1 ton of galvanized steel with coating Weight of 1 m2 of galvanized steel with coating, kg| 0,4 | 318,47 | 3,14 |
| 0,45 | 283,29 | 3,53 |
| 0,5 | 253,81 | 3,94 |
| 0,55 | 232,02 | 4,31 |
| 0,6 | 213,22 | 4,69 |
| 0,65 | 196,67 | 5,08 |
| 0,7 | 182,15 | 5,49 |
| 0,75 | 170,07 | 5,88 |
| 0,8 | 158,98 | 6,29 |
| 0,9 | 141,04 | 7,09 |
| 1 | 125,94 | 7,94 |
Source: https://positroika-doma.ru/stroitelnye-materialy/ves-stali-ocinkovanoy-listovoy
Thyroid health: 8 golden rules
The hormones that the thyroid gland synthesizes are important for every single cell of the body. To a large extent, this is important for the fair sex, since any dysfunction of the thyroid gland entails complications with women’s health. The pathology of the thyroid gland today is largely influenced by the environmental situation of megacities, in particular, salts of heavy metals that have a carcinogenic effect.
The hormones that the thyroid gland synthesizes are important for every single cell of the human body. To a large extent, this is important for the fair sex, since any dysfunction of the thyroid gland entails complications with women’s health.
The pathology of the thyroid gland today is largely influenced by the environmental situation of megacities, in particular, salts of heavy metals that have a carcinogenic effect.
Air pollution in large cities is a factor in the emergence of a wide range of diseases and thyroid diseases too.
Normal thyroid function: 8 theses
How to protect your thyroid gland and give it the opportunity to work properly? Here are the key rules for preventing thyroid disease.
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Thyroid hormones play a role in the functions of every cell
The thyroid hormone called thyroxine plays a role in the functioning of every cell in the body. The thyroid gland synthesizes thyroxine and transfers it to the blood, and the latter already transports this hormone to all cells. The cell uses thyroxine to obtain energy for life, in other words, this hormone takes part in the cellular biochemical reaction, and as a result, the cell, by utilizing fat and protein, receives energy, heat and removes water.
Thyroid hormones and the female reproductive system
An egg is also a cell that needs energy during the maturation stage. When a cell has optimal hormonal levels, it has energy. And if we talk specifically about the egg, when the latter has full energy for the processes of maturation and fertilization, and then the pregnancy proceeds correctly.
If there is not enough hormone, the egg is immature, with energy deficiency, and menstruation occurs, but pregnancy does not occur. In addition, if there is a lack of the hormone, pregnancy in the early stages has a risk of being interrupted. It follows from this that before planning a pregnancy, it makes sense to definitely examine the hormonal levels of both the ovaries and the thyroid gland.
In the body, all hormones without exception are connected through the pituitary gland
In the body, as already noted, all hormones are interconnected. The “control center” for hormones is located in the pituitary gland (a gland on the lower surface of the brain). A number of so-called control hormones are synthesized in the same lobe of the pituitary gland. And therefore, a certain dynamics of a particular hormone entails the dynamics of another, provoking “female” ailments.
The dynamics of thyroid hormone can lead to changes in the mammary glands
Ovarian hormones act on the mammary gland. Thyroid hormones, through the pituitary gland and the controlling thyroid-stimulating hormone, have a connection with prolactin, which means that the dynamics of the thyroid hormone can be reflected in the form of changes in the mammary glands. From all that has been said, it follows that the fair sex needs to systematically keep thyroid hormones and their levels under control.
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Thyroid screening is important before and during pregnancy
It is important to check the level of thyroid hormones in the cells of those who are preparing for pregnancy or for already pregnant women, since its hormones are also important for the baby’s cells. Pregnant women are strongly recommended to monitor their thyroid hormone levels every 2-3 months.
Symptoms of thyroid hormonal imbalance
It can be quite difficult for a person to notice changes in the functioning of the endocrine system, but if hormones are at a critically low level, drastic changes will occur:
- sudden appearance of excess weight;
- weakness;
- drowsiness;
- dry skin;
- swelling.
These symptoms are typical for the fair sex when there is a hormone deficiency. On the other hand, a woman may have excess hormones. It shows up like this:
- sudden weight loss;
- sweating;
- hand tremors;
- strong heartbeat.
Symptoms become obvious if the hormone content is significantly reduced or increased, when the deviations are weak, the woman will not feel these manifestations, since the deficiency/excess occurs slowly.
It is important to control thyroid hormones from childhood
Hormonal levels need to be controlled by both men and the younger generation, since, firstly, men have a hormone-dependent organ. And it is extremely important to control the hormonal background of children, for the reason that the child is developing and the need for hormones is very significant, and energy costs are very significant. The more a child works intellectually or moves, the more thyroid hormone he uses.
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It is important to take a comprehensive approach when checking thyroid hormones
It is important to monitor the levels of hormones T3, T4 and the hormone with the complex name “controlling pituitary tereotropic hormone” every year. The latter demonstrates whether the body generally has enough hormones. A high TSH level indicates that there is a need for more hormones. A low TSH reading means that the body is sufficiently saturated with the hormone.
Controlling the level of thyroid hormones is a good prevention of various diseases of the organ associated with its dysfunction. Checking hormones will help prevent the development of diseases at an early stage and take appropriate measures in time. *published by econet.ru.
*Ekonet.ru articles are intended for informational and educational purposes only and do not replace professional medical advice, diagnosis or treatment. Always consult your physician with any questions you may have about a medical condition.
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Source: https://econet.ru/articles/zdorovie-schitovidnoy-zhelezy-8-zolotyh-pravil
Huawei FreeBuds 3 review: AirPods for Android
It's hard to deny that Apple AirPods are icons among true wireless headphones. The distinctive and often imitated white stems protrude from the ears of listeners around the world, although these buds are not without their flaws. For example, they only have a few built-in controls, and by default they only have a wired charging case, something Apple just fixed with the AirPods Pro, although at a significant cost premium.
Huawei has also unveiled its latest true wireless update in the form of the FreeBuds 3. They combine many of your favorite earphone features, plus a few of their own quirky innovations, into an unusual but attractive and affordable price. suitable package. They sit between Apple's two sets of true wireless earbuds in terms of specs, but are lower in both price and are aimed at Android users in the same way that the AirPods are for iOS users.
It's a shame that they only work best with certain Huawei phones, require an Android-only app to unlock their true potential, and won't be sold in the US because they prove to be a strong competitor to the AirPod's Android-focused range.
FreeBuds 3 price and availability
The FreeBuds 3 are on sale in the UK from November 14th at Amazon UK, Phone Warehouse, O2, John Lewis and Argos UK and will cost £169.99 (approximately $220 direct conversion).
It's £30 cheaper (but $20 more) than Apple's similar product, the AirPods 2 with Wireless Charging Case, and £80/$29 cheaper than the recently introduced AirPod Pros, which have other features with FreeBud such as noise reduction and others. built-in controls.
By purchasing FreeBuds, you can also claim a free Huawei 15W wireless charger until December 31, 2019.
Huawei still doesn't sell its devices in the US, meaning the only way US readers can buy FreeBuds will be through auctions or international shipping of the buds themselves.
The FreeBuds are a good-looking pair of headphones, available in either glossy ceramic white (as my reviewers did) or Carbon Black. Yes, they are similar to AirPods, but you can still easily differentiate the two products. The FreeBuds' body is angular, eschewing Apple-like curves in favor of trimming away all the excess material, in keeping with Huawei's usual sharp-edged design language.
Besides the plastic, the bottom of each stem has a shiny metal tip that leads to the microphones and black mesh that covers the speaker opening on the inside, as well as some black translucent plastic where the on-ear detection sensor lives.
It's a more prominent presentation than what you see on the standard AirPods or Pros, and while neither is groundbreaking design work, it looks good.
Hidden inside each bud is a 14mm dynamic driver and bass tube, voice and bone conduction microphone, and the brains of the operation: Huawei's Kirin A1 chip. Similar to Apple's H1 chip, Huawei's new processor designed for wearables is designed to bring stable, responsive, and accurate audio to your ears.
The included wireless charging case (a feature that will cost you more with the 1st and 2nd generation AirPods) is another simple plastic design in matching earphone colors. There's a shiny silver Huawei logo on the back, which helps disguise the metal hinge mechanism. However, this seems like a manufacturing error as it makes more sense to have your logo on the front of the case.
The round shape of the case means that it is quite wide and tall (diameter 60.9 mm, depth 21.8 mm or 2.4 inches diameter, 0.85 inches depth).
It's much taller and a hair thicker than the AirPods Pro case - 45.2 x 60.6 x 21.7 mm (1.78 x 2.39 x 0.85 inches), and also slightly wider and taller than the AirPods Wireless Case - 53.5 x 44.3 x 21.3 mm (2.11 x 1.74 x 0.84 inches).
I don't think it's a significant difference since the FreeBuds' case would still fit comfortably in a jeans pocket, but the noticeably shorter profile at least made me feel like the buds inside were safer during a sudden drop than the AirPods would be .
The FreeBuds 3 IPX4 are sweat and water resistant, just like the AirPods Pro, making the FreeBuds safe for workouts and rainy days, but don't try taking them for a swim. The Elite Jabra 65t and Elite Active 65t are rated IP55 and IP56 respectively, so choose something more reliable.
FreeBuds 3 fits: open but secure
Unfortunately for me, when I use the FreeBuds 3, I tend to not like open-fit headphones. My ears have always preferred the gel buds that fit snugly into your ear rather than the ones that sit at the entrance to your ear and are held in place by your goat, just like the FreeBuds.
When I first tried the AirPods (2nd generation), I was pleased to find that they were extremely comfortable from the moment I put them in my ears.
However, the slightly larger size of the FreeBuds meant that a little adjustment was required to find the most comfortable position for them, and even then I was still very aware of their presence when I was wearing them.
After a while I got used to them and they never felt uncomfortable in my ears, even when I wore them while running. In the end, I was able to ignore them just as well as the AirBuds, so I think if you're less picky about the appropriate style of your headphones, you'll get along well with the FreeBuds.
Huawei's buds (dimensions 1.6 x 0.8 x 0.7 inches or 41.5 x 20.4 x 17.8 mm) are almost identical in size to AirPods (1.6 x 0.7 x 0.7 inches or 40.5 x 18.0 x 16.5 mm), but slightly larger in each dimension.
As for weight, again, the FreeBuds are slightly larger, with each bud weighing 4.5 grams (0.16 oz) versus the AirPods' 4 grams (0.14 oz), and the body weighing 48 grams (1.8 oz) versus Apple's 40 grams (1.4 oz). ).
These differences are easy to spot on the spec sheet, but in real life you won't notice the difference when using Huawei Buds.
Setting up FreeBuds 3
Pairing FreeBud with an iOS or Android device works as usual. With the earbuds in the case, you hold down the small button on the outside of the case with the lid open and you'll eventually see the FreeBuds 3 menu pop up in your Bluetooth menu.
To get a better understanding of FreeBuds, you'll need the AI Life app, which is only available on Android (sorry iPhone users).
Until now, it has been used as an app to manage Huawei routers, but now it supports FreeBuds and the upcoming Huawei Eyewear smart glasses with additional features and tools. With this app, setting up FreeBuds is almost as easy as running AirPods on an Apple device.
Simply turn on the case with the side button and open it. After a few seconds, you'll get a pop-up window that you can use to quickly pair the buds, bypassing the Bluetooth menu entirely.
Features of FreeBuds
But the true potential of these buds is reserved for existing Huawei users. Exclusive to EMUI 10 devices is the ultra-low latency feature in FreeBuds, which is achieved through an “isochronous dual-channel” connection.
This basically means that both buds only receive their own left/right signal, rather than the usual solutions of both buds receiving both signals or one receiving both and then sending one to the other.
Huawei's method is designed to save energy and make work easier.
You can get EMUI 10, Huawei's take on Android 10, as standard on the Mate 30 series and further P30-, Mate 20- and P20 series devices in the coming months. Given the hassle of purchasing Huawei devices, especially in the US, this means you won't be able to get the most out of FreeBud without significant extra effort.
Another Huawei exclusive is the ability to easily switch between devices.
If you sign into your phone using Huawei ID and do the same with another Huawei device, such as Watch GT 2, your FreeBuds will pair with your watch when you leave home without your phone, and reconnect with your phone as soon as you return .
However, you can easily manage multiple device connections through AI Life, thanks to a Reconnect button that bypasses the Bluetooth menu if you've previously established a pair of contacts.
Besides simple pairing, AI Life also offers useful information. This includes individual battery life for each bud and housing, the ability to customize what double-tap buds do, and the ability to change noise canceling settings.
Turning on FreeBud and listening to something takes almost any time.
Huawei's claim that the company's headphones can connect to one of its phones in 2.5 seconds proved true, and it was only a few tenths of a second slower when I tried to use the Xiaomi Mi 9T Pro phone that I use daily.
My MacBook Pro connected just as quickly, so you don't have to worry about cross-brand compatibility even on devices of a different genre. Essentially, this means that FreeBud offers almost instant pairing with whatever you want to connect them to.
FreeBuds 3 Controls
Source: https://cdnews.ru/2020/01/20/obzor-huawei-freebuds-3-airpods-dlja-android/
