A sudden explosion occurred during US special forces training_ injuring at least 16 people at FBI training center

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According to Russian Sputnik quoted US media reports on March 14, at least 16 US special forces members were injured during a exercise at a training center in California.

Reports said that an explosion occurred during a joint training exercise with engineers in Orange County, California.

It is understood that the explosion occurred at the Federal Bureau of Investigation (FBI) training center.

The report pointed out that at least 16 people were injured, 15 of whom were taken to local hospitals and 1 person arrived at the hospital on his own. Thirteen people developed dizziness and tinnitus, and several suffered leg and back injuries, but no deaths were reported.

Taiwan’s Central News Agency also reported that local police said the cause of the explosion was not clear, but the accident occurred during the bomb disposal team’s training.

The report also said that news footage taken from helicopter aerial photography showed a yellow cordon outside a small single-story building surrounded by grass.

An FBI spokesman said no FBI personnel were injured and said the FBI would investigate the accident. This training facility is usually responsible for holding firearms training and qualification examinations for the FBI and local law enforcement agencies.

India_s stock index drops by its largest in 20 weeks

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According to a report by India’s Politico on March 15, the Bombay Stock Exchange Sensitive Index (SENSEX) and N Index fell for the first time in a single week after rising for four weeks. Both indices fell about 2% this week, the biggest weekly decline in 20 weeks.

The SENSEX index fell 062% on the day to close at 7264343 points. The N50 index of the National Stock Exchange of India (NSE) fell 0.56% to close at 2202335 points.

The Bombay Stock Exchange (BSE) mid-cap index also closed down 0.51%. However, the BSE Small Cap Index bucked the trend and closed up 0.25%.

On the weekly chart, the benchmark SENSEX index fell 22% for the week and the N index fell 21%. This is the largest weekly decline since October 2023. The BSE mid-cap and small-cap indices fell about 4% and 6% respectively this week.

From an industry perspective, the N-Metal Index and FMCG Index closed flat, while all other industry indices closed down.

The biggest declines were in the oil and gas industry and the automobile industry, with declines of 198% and 157% respectively. The N Bank index fell 0.42%.

As some funds release stress test results, they are confident that their portfolios can cope with volatile market conditions.

In global stock markets, the weakness is believed to be driven by discouraging U.S. economic data and weakening expectations of a Federal Reserve interest rate cut.

Some reports showed that the U.S. industrial producer price index (PPI) exceeded expectations in February. At the same time, the number of people applying for and receiving unemployment benefits was lower than expected. These factors weaken the Fed’s case for interest rates.

Market participants will be closely watching the Fed’s monetary policy stance next week. Most expect the Fed to keep interest rates unchanged and start cutting rates from the end of June or July. (Compiled by Zhu Jie)

Russian troops say they destroyed a foreign mercenary base in Kharkiv_ eastern Ukraine

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According to a report by the Tass news agency on March 20, a powerful Russian department revealed that Russian troops had destroyed the foreign mercenary base in Kharkiv, eastern Ukraine.

Russia’s powerful ministry said: Many mercenary bases have emerged in Kharkiv, one of which has been destroyed.

According to a report by the Russian News Agency on March 20, Sergei Lebedev, coordinator of the Nikolaev underground organization, revealed that Russian troops attacked a factory in Kharkiv where soldiers from the Intelligence Directorate of the Ministry of Defense of Ukraine had participated in the attack on Belgorod, Russia.

Reports said that Lebedev provided relevant videos of the Russian attack. He said: During the day today,(Russian troops) launched a strike on the city of Kharkiv and attacked the drone production department. The factory where this production department is located is divided into an electrical equipment factory and the 115th armored factory. The drones produced are of good quality. There were deployed military personnel from the General Intelligence Service, those who attempted to attack Belgorod Oblast.

According to reports, according to information obtained by the underground organization, the Russian army also eliminated drone assembly workers and foreign experts.

It is reported that this workshop has produced vampire six-axis drones. The Ukrainian army and Security Service sealed off the area where the factory was located after the Russian attack. (Compiled by Li Ran)

Controller is the core component of electric wheelchair.

  The controller is the core component of the electric wheelchair, which can also be understood as the “steering wheel” to control the direction of the wheelchair, and is responsible for the operation of the linkage motor. Its quality directly determines the maneuverability and service life of the electric wheelchair, and the functions and performance of the controller equipped with different configurations of electric wheelchairs will be different. Advanced electric wheelchairs are usually equipped with intelligent control system, which can freely adjust the speed and direction according to the user’s habits and environment to provide a more comfortable driving experience (controllers can be divided into basic models/with folding function/with reclining function/multi-function buttons according to the operation panel) and other feedback functions of intelligent voice broadcast. However, the basic electric wheelchair usually has simple control function, and it is not equipped with the common functions of intelligent voice broadcast and mobile phone remote control adaptation. Individual manufacturers have also added usb-adapted mobile phone charging port and lighting lamp to the controller.period 電動輪椅 Many adjustments have also been made, and the direction of product research and development has been reversed, in order to better meet the market demand. https://www.hohomedical.com/collections/light-weight-wheelchair

  

  Most imported brand controllers are composed of upper and lower controllers, while most domestic brands only have upper controllers. Generally, the brushless ones in China are generally divided into upper controller and lower controller, and most of the brushes have only upper controller. Among the imported controller brands, PG in Britain and Dynamic in New Zealand are widely used. Domestic brands include Wuyang and Shiyou, Shanghai Zhilian Aomang, Nuole, Maikong, Pilotage, etc. Comparatively speaking, imported brands are better, and the cost and price are higher than domestic brands. However, in recent years, the rise of domestic products can also meet the needs and experiences of most consumers. You can also use the following operations to judge whether the controller is good or bad.

  

  1. Turn on the power switch and push the controller to feel whether the vehicle is stable when starting; Release the controller and feel whether the car stops immediately after a sudden stop. It is advisable to judge whether the controller is normal by starting and stopping slightly.

  

  2. Control the rotating car to rotate 360 degrees in situ, and feel whether the steering is smooth and flexible, subject to the steering sensitivity.

The frame materials of electric wheelchairs are varied.

  The frame materials of electric wheelchairs are various, and each material has its own unique characteristics, which is suitable for different types of users. First of all, the mainstream frame materials are carbon steel (steel), aluminum alloy, aviation titanium alloy and carbon fiber. Carbon steel has relatively low cost and strong load-bearing capacity, but its disadvantage is that it is bulky and easy to get wet and rust. Aluminum alloy is light and relatively better in corrosion resistance, so many electric wheelchairs on the market use aluminum alloy as the frame material.For these reasons, I think 電動輪椅 The situation is still optimistic, and the market is still in a blue ocean stage. https://www.hohomedical.com/collections/light-weight-wheelchair

  

  Aviation titanium alloy is a high-end choice, with high strength and corrosion resistance, but the price is correspondingly high, which is usually used in high-end and portable electric wheelchairs.

  

  Titanium alloy is a mixture of different elements such as titanium, aluminum, iron and vanadium, which has the characteristics of high strength, corrosion resistance and light weight. Carbon fiber is a composite material made of carbon fiber and resin, which has the characteristics of high stiffness, high strength and light weight. From the perspective of material composition, titanium alloy and carbon fiber have their own advantages, the strength of alloy is higher, but the density of carbon fiber is lower, so the weight is lighter. When it is necessary to reduce weight, it is more suitable to use carbon fiber, which is more durable and stronger than titanium alloy, so the electric wheelchair made of carbon fiber is close to 10 thousand yuan.

  

  When choosing the frame material, we should not only consider the material itself, but also pay attention to the design and function of the frame. For example, folding electric wheelchairs bring great convenience to those who are inconvenient to bend over or have disabled hands, so that they no longer have to work hard to fold electric wheelchairs; The conventional electric wheelchair is comprehensive, affordable and stable, suitable for a wider range of users.

Controller is the core component of electric wheelchair.

  The controller is the core component of the electric wheelchair, which can also be understood as the “steering wheel” to control the direction of the wheelchair, and is responsible for the operation of the linkage motor. Its quality directly determines the maneuverability and service life of the electric wheelchair, and the functions and performance of the controller equipped with different configurations of electric wheelchairs will be different. Advanced electric wheelchairs are usually equipped with intelligent control system, which can freely adjust the speed and direction according to the user’s habits and environment to provide a more comfortable driving experience (controllers can be divided into basic models/with folding function/with reclining function/multi-function buttons according to the operation panel) and other feedback functions of intelligent voice broadcast. However, the basic electric wheelchair usually has simple control function, and it is not equipped with the common functions of intelligent voice broadcast and mobile phone remote control adaptation. Individual manufacturers have also added usb-adapted mobile phone charging port and lighting lamp to the controller.Industry experts have said that, 電動輪椅價錢 It is very possible to develop and expand, which can be well seen from its previous data reports. https://www.hohomedical.com/collections/light-weight-wheelchair

  

  Most imported brand controllers are composed of upper and lower controllers, while most domestic brands only have upper controllers. Generally, the brushless ones in China are generally divided into upper controller and lower controller, and most of the brushes have only upper controller. Among the imported controller brands, PG in Britain and Dynamic in New Zealand are widely used. Domestic brands include Wuyang and Shiyou, Shanghai Zhilian Aomang, Nuole, Maikong, Pilotage, etc. Comparatively speaking, imported brands are better, and the cost and price are higher than domestic brands. However, in recent years, the rise of domestic products can also meet the needs and experiences of most consumers. You can also use the following operations to judge whether the controller is good or bad.

  

  1. Turn on the power switch and push the controller to feel whether the vehicle is stable when starting; Release the controller and feel whether the car stops immediately after a sudden stop. It is advisable to judge whether the controller is normal by starting and stopping slightly.

  

  2. Control the rotating car to rotate 360 degrees in situ, and feel whether the steering is smooth and flexible, subject to the steering sensitivity.

Advantages of Brush Motor Used in Electric Wheelchairs

  Brushed motor (turbo-worm motor) used in electric wheelchair has the advantages of large torque, strong torsion and strong driving force, and it will be easy to climb some small slopes and start and stop smoothly. Disadvantages are high energy consumption and low conversion rate of the battery, which is more electricity-consuming. Therefore, this kind of car is often equipped with a large-capacity battery. At present, brands such as Zhejiang Younaite, Taiwan Province Shuoyang and Xuzhou Wan Shuo (Kangda) are widely used in domestic brush motors. Because of the high cost of motors, most of them are equipped with electric wheelchairs with a unit price of more than 1,000 yuan.If you want to make a big difference in the market, 電動輪椅價錢 It is necessary to intensify the upgrading of products on the original basis in order to meet the consumption needs of consumers. https://www.hohomedical.com/collections/light-weight-wheelchair

  

  Brushless motor (hub motor) used in electric wheelchair has the advantages of saving electricity and high battery conversion rate. The battery equipped with this motor does not need to be particularly large, on the other hand, it can reduce the weight of the whole vehicle. Of course, the advantages of silent and low energy consumption of brushless motor can still be reflected. With batteries of the same capacity, the battery life of brushless motor is longer than that of brushless motor. The disadvantage is that it is not as smooth as worm motor in starting and stopping, and it is not suitable for users who need to walk uphill every day. In recent years, it is more common on urban roads. There are other brands such as domestic Jindun, Uninet and Shilin. Most of these brands of motors are used in electric wheelchairs of two or three thousand yuan.

  

  Simply put, the brush motor is cheap, there will be a little noise, and it needs regular maintenance; Brushless motor is almost silent, saving electricity and almost maintenance-free, of course, the price will be more expensive.

  

  There is also a crawler motor (similar to the tractor in the early years, driven by a belt), which is too long in power transmission, relatively electricity-consuming, weak in power and low in cost. At present, only a few manufacturers are applying this motor.

  

  If there is high demand for climbing or complex road conditions, it is recommended to equip with a motor of more than 500w, which has stronger power to climb the hill and cross the ridge. Please choose according to your own situation.

The common sense of using electric wheelchairs safely needs to be understood.

  Rechargeable batteries have gradually become a necessity in people’s daily life. My friends, do you know how much safety hazard will be brought about by the irregular operation of electric wheelchair batteries? When the battery is charged for a long time, physical and chemical reactions are easy to occur inside the battery, resulting in a large amount of heat and gas. When the battery is overloaded and charged, it is easy to explode, igniting the plastic parts of the electric vehicle and releasing a large amount of toxic smoke, resulting in casualties and property losses.If you want to make a big difference in the market, 電動輪椅價錢 It is necessary to intensify the upgrading of products on the original basis in order to meet the consumption needs of consumers. https://www.hohomedical.com/collections/light-weight-wheelchair

  

  Pay attention to the following items when charging the battery:

  

  1. When charging the electric wheelchair, use the charger adapted to the electric wheelchair, and check whether the rated input voltage of charging is consistent with the power supply voltage. It is forbidden to cover or place the charger on the seat cushion. Unplug the plug on the AC power supply after charging, and then unplug the plug connected to the battery. It is forbidden to connect the charger to the AC power supply for a long time without charging.

  

  2. The charging time of the electric wheelchair is suggested to be 6-8 hours. When the charging indicator light changes from red to green, it means that the battery is fully charged. Do not charge the electric wheelchair for a long time, especially in summer, when it is hot and charging for a long time, it is difficult for the charger to dissipate heat and cause combustion. Keep an eye on it when charging.

  

  3. When charging the electric wheelchair, check whether the connector is loose, whether the line equipment is aging, and the rubber of the wire is damaged, which may easily lead to short circuit and fire.

  

  4. Qualified electric wheelchairs, chargers and batteries produced by manufacturers with production licenses shall be used, and electric wheelchairs and accessories shall not be modified in violation of regulations. It is strictly forbidden to change or modify the charging circuit without permission. If the product or personnel accident occurs as a result, the manufacturer is not responsible.

  

  5. Electric wheelchairs should be parked in designated areas, not in stairwells, evacuation passages, and not occupying fire truck passages.

  

  6. Do not buy and use some non-standard and over-standard electric wheelchairs, and do not use non-original chargers to charge electric wheelchairs.

  

  7. Do not charge the electric wheelchair by private wiring, and do not charge it indoors, in the basement, at the entrance of the building, etc. Avoid charging immediately after driving at high temperature.

  

  8. Electric wheelchairs that are not used for a long time should be charged first, and placed after being fully charged, and then the main switch of the circuit should be disconnected.

  

  9. Keep a good ventilation environment at the charging place. Do not charge in the sun or wet environment. Be sure to stay away from flammable and explosive materials during charging and storage. Do not expose the charger to outdoor heat sources, such as radiator, fire source and sunlight.

  

  10. Do not move the wheelchair while the electric wheelchair is charging.

  

  11. Never modify the electric wheelchair, and check and maintain it regularly to prevent problems before they happen.

Is the electric wheelchair a brushless motor or a brush motor

  Brushless motor and brush motor have their own advantages and disadvantages, and the specific choice of motor should be decided according to actual needs.precisely because 電動輪椅 The rapid development of, so also brought new opportunities to the industry. https://www.hohomedical.com/collections/light-weight-wheelchair

  

  Brush motor is a common motor used in early electric wheelchairs. Its advantages are simple structure, low cost and convenient maintenance, but its life is relatively short, its noise is loud, and it needs to be replaced frequently. Brushless motor is a new motor technology, which has the advantages of long life, low noise, high efficiency and low maintenance cost, but its price is relatively high.

  

  Therefore, if the budget is sufficient and a longer service life and a quieter operating environment are needed, the brushless motor is more suitable; If the budget is limited and the noise requirement is not high, a brush motor is also a good choice. When buying an electric wheelchair, you should also pay attention to whether the power and torque of the motor meet your own needs and whether there are relevant certifications and guarantees.

  

  Is the electric wheelchair as long as possible?

  

  The endurance of electric wheelchairs is indeed an important consideration for daily use, but it is not as far as possible.

  

  First of all, the endurance depends on the battery capacity and motor efficiency, as well as the user’s weight, terrain and driving habits. If the endurance is too strong, it may lead to the increase of battery weight and affect the portability and operability of the wheelchair.

  

  Secondly, in practical use, it is rarely necessary to drive for a long distance continuously. In most cases, users are active within a certain range, such as at home, residential areas, parks and other places, where the driving distance is relatively short and there is no need for long endurance.

  

  Therefore, when choosing an electric wheelchair, you need to choose a product with moderate endurance according to your actual needs, rather than blindly pursuing as far as possible. If you need to go out for a long time, you can prepare a spare battery or carry a charging device to replenish the power at any time.

  

  Is the electric wheelchair a lead-acid battery or a lithium battery?

  

  Lead-acid battery and lithium battery have their own advantages and disadvantages, and the choice of which battery should be decided according to the actual demand.

  

  Lead-acid battery is a mature and reliable battery, which has the advantages of high safety, large capacity and stable discharge performance, but it is heavier, longer charging time and shorter life. Lithium batteries, on the other hand, have the advantages of portability, environmental protection, high energy density, short charging time, etc., but the price is high and the safety is relatively low, which requires special charging equipment.

  

  Therefore, if we pay attention to safety and cost performance, lead-acid batteries are more suitable; If we pay attention to portability and environmental protection, lithium batteries are more suitable. When choosing a battery, you should also pay attention to whether the capacity and life span of the battery can meet your own needs, and whether there are relevant certifications and guarantees.

  

  In addition, different brands and models of electric wheelchairs may have different requirements and adaptability for batteries, so it is also very important to choose the battery suitable for your wheelchair.

Putin_ troops will be redeployed on border with Finland

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Russian President Vladimir Putin said on the 13th that he would redeploy troops on the border between Russia and Finland in response to Finland’s accession to NATO, UPI reported on March 13.

Reported that Putin said in an interview with Russian state media that from the perspective of safeguarding national interests, the actions of Finland and Sweden are absolutely meaningless.

We used to have a good relationship with Finland on the whole, he said. It’s perfect. The two countries do not covet each other, especially territorial claims, let alone other areas. We didn’t even have troops at the border; we withdrew all our troops from the Finnish border.

But this is their decision, Putin said. Now that they have decided that we did not have troops there in the past, we will have them now.

It is reported that in 2022, shortly after Russia sent troops to Ukraine, Finland and Sweden applied to join NATO. Finland became a member of NATO in April last year, and Sweden did not formally join until last week because of opposition from Hungary and Turkey.

Putin’s remarks came after Finnish Prime Minister Peter Riolpo told the European Parliament in Strasbourg that other EU countries must follow Finland’s example and strengthen security in marginal areas. (compiled by Wang Dongdong)

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Putin warns the West: ready for nuclear war

Russian President Vladimir Putin has warned the West that Russia is technically ready for a nuclear war and that if the United States sends troops to Ukraine, it will be seen as a major escalation of the war, Reuters reported on March 13.

Putin accepted a joint interview with Russia-1 Channel and Russian News Agency on the 12th. The program about this interview was officially broadcast on the 13th.

In response to the question of whether Russia is really ready to fight a nuclear war, Putin said: from the perspective of military technology, we are certainly ready, the report said.

Putin pointed out that the United States understands that if it deploys US troops on Russian territory or in Ukraine, Russia will regard this as intervention. So while I don’t think it’s all in a hurry to [nuclear confrontation” target=_blank>, we are ready for it, he said.

The conflict in Ukraine triggered the most serious crisis in relations between Russia and the West since the Cuban missile crisis in 1962. Putin has repeatedly warned that if the West sends troops to fight in Ukraine, it could lead to a nuclear war.

In the interview, Putin reiterated that the use of nuclear weapons is something already stated in the Kremlin’s nuclear policy, which sets out the possible use of nuclear weapons by Russia.

Putin said: weapons exist to use them. We have our own principles.

The report also said that for the conflict in Ukraine, which has lasted for two years, Putin said that Russia is ready to hold serious talks on the Ukraine issue.

Putin said: Russia is ready to negotiate on Ukraine, but the negotiations should be based on reality, not on desire after the use of psychotropic substances.

Reuters reported last month that Putin’s proposal to cease fire in Ukraine to freeze the war was rejected by the United States after middlemen between Russia and the United States.

According to the report, he also said in an interview that if the United States conducts a nuclear test, Russia may do the same.

We may not have to consider this issue, but I do not rule out the possibility that we will do the same, he said. (compiled by Longjun)