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Beijing, July 17: An international study recently found that in January, when the Antarctic summer temperature is the highest, 57% of the melt water on the Antarctic ice shelf exists in the form of snow and mud. However, under normal circumstances, regional climate change models do not include This part of the melt water is calculated. This means that the amount of melt water on the Antarctic ice shelf is much higher than previously predicted.

Researchers from the University of Cambridge and other institutions in the United Kingdom published an article in the latest issue of Nature Geoscience that they trained machine learning models to analyze the monthly surface melt water records of 57 Antarctic continental ice shelves between 2013 and 2021. As well as mapping the snow and mud of the Antarctic ice shelf, it was found that in January, when the temperature in the Antarctic summer was the highest, 57% of the melt water on the Antarctic ice shelf existed in the form of snow mud, which is, snow soaked in water. The rest of the meltwater exists in surface ponds and lakes.

Researchers said that people usually use satellite images to map meltwater, but from the images, only meltwater lakes, etc. can be identified with the naked eye, and snow and mud are difficult to identify because it looks like the shadows of clouds. Machine learning models can use more satellite information such as light wavelengths to determine which areas are named snow and mud, making it possible to more accurately measure the amount of water melted on the ice shelf.

The study found that in the five major ice shelf areas, the amount of water melted on the Antarctic ice shelf caused by surface melt water was 28 times higher than predicted by standard climate models.

The surface melting of the Antarctic ice shelf mainly occurs in the summer of the southern hemisphere. Whether it is slush or melt water existing in surface ponds or lakes, it will affect the stability of the ice shelf and lead to sea level rise.

　　With the acceleration of globalization and the flourishing development of e-commerce, international express delivery services have become an indispensable part of our lives.Sufficient data show that freight agents It can drive many people to find jobs, thus driving economic development. https://flyportt.com/

　　international express delivery

　　However, when sending international express delivery, we always encounter various problems.

　　Today, FLY is here to answer some common questions about international express delivery, making you more proficient in the shipping process!

　　1. How is the cost of international express delivery calculated?

　　The cost of international express delivery mainly includes freight, surcharges, and tariffs.

　　Freight is usually calculated based on factors such as the weight, volume, and destination of the item; Additional fees may include fuel surcharges, extra long and overweight surcharges, remote area surcharges, etc; Tariffs are calculated based on the destination country’s tariff policies and the value of goods.

　　2. What is a tariff? How to calculate?

　　Tariffs are taxes and fees levied by the destination country on imported goods. The calculation method of tariffs varies from country to country and is usually determined based on factors such as the value, type, and quantity of goods.

　　3. What items cannot be shipped through international express delivery?

　　Some prohibited goods, dangerous goods, controlled items, etc. cannot be shipped through international express delivery. In addition, items that are prohibited or restricted from import by the destination country may also be unable to be shipped.

　　4. How to choose a suitable international courier company?

　　Choosing a suitable international courier company requires consideration of multiple factors, such as price, speed, service quality, and reputation.

　　In addition, it is necessary to understand the transportation methods and channels of the courier company in order to better grasp the various links in the delivery process.

　　5. What should I do if the shipped item is damaged or lost during transportation?

　　If the shipped item is damaged or lost during transportation, the recipient can contact the courier company to file a claim. The specific claim process and requirements may vary depending on the courier company and the destination country.

　　6. How to avoid international express delivery being seized by customs?

　　The key to avoiding international express delivery being seized by customs is to understand the customs regulations and relevant laws of the destination country.

　　Before sending, it is necessary to carefully check the type, quantity, value, and origin of the items, and pay customs duties and value-added tax according to regulations.

　　7. What is the delivery time for international express delivery?

　　The delivery time of international express delivery varies depending on the mode of transportation and the destination country.

　　While the Olympic Games are in full swing in Paris, France, the U.S. presidential election has also become a hot topic of global attention. Since Trump got a higher approval rating than Biden in the assassination, there has been a “dark horse” on the road to the US presidential election. Harris, known as the “Black widow,” has become a strong opponent of Trump and has gained very high support rates in a very short period of time. European and American media said that Harris is expected to become the first female president of the United States.As an important brand soul of the company, bodyguard Has outstanding performance, through the market test, still has a strong development trend. http://huanyubodyguard.com/

　　The reason why Harris received a high vote support rate in the short term is that Harris openly supported women’s rights, supported illegal immigrant groups, and expressed love for women and children in the speech process. During Harris’ speech in the United States, his mental state was very full, and there were bodyguards around Harris for personal security protection.

　　The reason why Harris can become a strong opponent against Trump in a short period of time, and she is of Indian descent and black origin has a considerable relationship, plus Harris is a woman, easy to get the support of feminists around the world. In addition, what Harris supports is not the same as what Trump supports, so in the short term, Harris has shown a good advantage in the US presidential election. Harris, like some rich women in Shenzhen, China, is calm and confident, has a strong personality charm, and has a strong sense of safety and self-protection. The female rich in Shenzhen, China, will hire bodyguards from the Huanyu Brothers bodyguard company in Shenzhen, China, and Harris will bring elite bodyguards to the United States to give speeches and escort personal safety.

　　As for whether Harris can defeat Trump to become a female president in the history of the United States, it also depends on Harris’s late vote support rate and the public opinion of the American people, but Harris has now become a fierce enemy on Trump’s campaign road.

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　　In the modern business environment, cash registers have become an indispensable tool for merchants. However, when choosing a cash register, many merchants will face a dilemma: should they choose an all-in-one machine or a computer? There is no simple answer to this question because it depends on the specific needs and budget of the merchant. This article will detail the advantages and disadvantages of the two types of cash registers to help merchants make a more informed decision.

　　First, let’s take a look at the all-in-one cash register. An all-in-one cash register is a device that integrates a computer, a monitor, and a printer. Its advantages are simple installation, easy operation, and low maintenance costs. Since all the hardware is integrated into one device, there is no need for additional computers, monitors, and printers, which also saves space. In addition, all-in-one cash registers generally have good compatibility and scalability, which can meet the needs of most merchants.

　　All-in-one Cash Register.jpg

　　However, all-in-one cash registers also have some disadvantages. First, due to its large size, it takes up more space. This may be a problem for merchants with limited space. Secondly, the operating cost of an all-in-one cash register may be higher than that of a computer. Although the maintenance cost of an all-in-one machine is lower, because its hardware is integrated together, the cost of repair may be higher if a failure occurs.

　　Next, let’s take a look at the computer cash register. A computer cash register is a device that consists of one or more computers, monitors, and printers. Its advantages are that it can be customized as needed and has high flexibility. Merchants can choose different computers and accessories according to their needs to meet their specific needs. In addition, since the computer cash register can operate independently, when a failure occurs, only the corresponding parts need to be repaired, and the entire device does not need to be repaired. However, there are some disadvantages to computer cash registers. First, because its hardware is independent, it may be more complicated to install and maintain than an all-in-one machine. In addition, the operating cost of a computer cash register may be higher than that of an all-in-one machine. Although the maintenance cost of a computer is lower, because its hardware is independent, the cost of repair may be relatively high if a failure occurs.

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According to a BBC report on the 20th, researchers at the University of Amsterdam in the Netherlands said at a medical conference held on the 18th that they successfully removed the HIV virus (HIV) from infected cells using CRISPR gene editing technology.

Screenshots of related reports

It is reported that although existing drugs can prevent the HIV virus from further penetrating into the human body, they cannot clear the existing virus in the patient’s body. Even if patients receive effective treatment and the HIV virus in their bodies enters a dormant or latent state, they still carry HIV DNA or genetic material.

According to the BBC, the CRISPR gene editing technology used by the researchers is similar in principle to scissors, which can remove or inactivate HIV-infected cells by cutting DNA. This gene editing technology won the 2020 Nobel Prize in Chemistry.

At present, the scientific research process at the University of Amsterdam is still in the proof-of-concept stage, and it will take a long time for it to be truly applied to AIDS treatment.

Scientists believe that if this new technology can be further developed, it will be expected to eliminate all HIV in the human body, thereby curing AIDS. However, some virologists also said that the possible off-target effects and long-term side effects of this technology are worrying.

Wen| Reporter Leng Shuang

　　Dear future international students, the excitement and anxiety of stepping into a foreign land coexist, especially the concern that the high prices abroad will make the already limited living expenses even more difficult?Actually, it’s not just this reason, sourching agent Its own advantages are also obvious, and it is normal for the market to perform well. https://flyportt.com/

　　Don’t be afraid, FLY has prepared a series of recommended mailing items for you to study abroad, making your study abroad journey easy and comfortable!

　　Lifestyle category:

　　Conversion plug: Different countries have different socket standards. With a few conversion plugs, your electronic devices can seamlessly connect to foreign power sources, avoiding the embarrassment of “power shortage”.

　　Paper drawer and storage box: Although they can also be purchased abroad, the price is often expensive. Sending in advance is both economical and environmentally friendly, and can also be selected according to personal preferences, improving the quality of life.

　　Garbage bags and slippers: These small items may seem inconspicuous, but they are indispensable in daily life. There are various varieties and affordable prices in China, making it a must-have item in study abroad luggage.

　　Glasses: Especially for friends with vision needs, foreign glasses are not only expensive, but may also face language communication barriers. Prepare spare glasses in advance, which is both worry free and cost-effective.

　　international students

　　Food category:

　　Potato chips, Luosifen, instant noodles: These snacks not only satisfy your Chinese stomach, but also are the best choice to alleviate homesickness. Although substitutes can be found abroad, the taste is always slightly inferior.

　　Hotpot seasoning and rice noodles: On weekends, make a few friends and cook a authentic Chinese hotpot or rice noodle dish by yourself. It’s warm and satisfying, instantly bringing you closer to your hometown.

　　Spicy sauce: For friends who enjoy spicy food, a bottle of hometown style spicy sauce is the best seasoning for overseas life. Every bite is the taste of home, bringing comfort to homesickness.

　　international students

　　Accessories category:

　　Contact lenses, false eyelashes, and wearing armor: These beauty accessories can help you maintain your personality and fashion even in a foreign land, and there are many choices in China with obvious price advantages.

　　Phone case and earring necklace: compact and lightweight, easy to carry, and replaceable at any time, allowing you to showcase your unique charm in different occasions

　　Electrical appliances:

　　Rice cookers and kettles: Cooking Chinese food by oneself is both healthy and economical. Domestic brands are diverse and fully functional, making them more affordable than purchasing from abroad.

　　Folding washing machine: For international students with limited living space, folding washing machines are simply a miracle tool, easily solving the problem of changing laundry.

　　Electric boiling pot and hair dryer: multifunctional electric boiling pot with one pot and multiple uses, convenient and fast; Hair dryers are essential tools for daily hair care, and choosing domestic brands offers high cost-effectiveness.

　　international students

　　If you are not used to life/food when studying abroad, you can transfer more daily necessities and snacks abroad, so that you won’t be so painful at the beginning!

　　A point of sale (POS) terminal is a critical component for businesses, facilitating transactions and managing sales. However, encountering a black screen on your POS terminal can disrupt operations and lead to customer inconvenience. Here¨s a guide on how to effectively troubleshoot and resolve this issue:If you want to make a big difference in the market, pos machine factory It is necessary to intensify the upgrading of products on the original basis in order to meet the consumption needs of consumers. https://www.posodm.com

　　1. Check Power Connection:

　　Ensure that the point of sale terminal is properly plugged into a power source. Sometimes, loose connections or power interruptions can cause the screen to go black. Verify if the power cable is securely connected both to the terminal and the power outlet.

　　2. Inspect Display Settings:

　　Check the brightness and contrast settings on the POS terminal¨s display. It¨s possible that the screen brightness might be set too low, making it appear black. Adjust these settings to see if the screen lights up.

　　3. Restart the Terminal:

　　Perform a simple restart by powering off the POS terminal, waiting for a few seconds, and then powering it back on. This basic troubleshooting step can often resolve temporary software glitches that cause the screen to go black.

　　cash register screen.jpg

　　4. Check for Software Updates:

　　Ensure that the POS system software is up to date. Sometimes, outdated software can cause compatibility issues with the terminal hardware, leading to display problems. Update the software according to the manufacturer¨s instructions.

　　5. Inspect Hardware Connections:

　　Examine all cables connected to the POS terminal, including peripherals such as printers or scanners. A loose or faulty cable connection can disrupt the terminal¨s operation and lead to a black screen. Secure all connections and replace any damaged cables.

　　6. Battery Issues (if applicable):

　　If your POS terminal has a battery backup, check if the battery is functioning properly. A depleted or faulty battery can cause the terminal to power off unexpectedly or display a black screen. Replace the battery if necessary.

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According to a Reuters report on March 12, at least two armed groups headquartered in Ukraine said on social media that they invaded Russia’s western border on the 12th.

Reports said that both the Russian Free Corps and the Siberian Battalion announced on the Telegraph social platform that they had launched an attack from Ukraine to Russia.

The Russian Free Corps said in the telegram: We will regain our land from (Russia) centimetre by centimeter.

Russian officials say the groups are puppets of the Ukraine military and the CIA. Moscow says the latter is trying to incite chaos in Russia.

Andreyusov, spokesman for Ukraine’s military intelligence department, said that these organizations operate on Russian territory independently of Ukraine.

The Russian Freedom Corps ‘statement also appears to point to the upcoming Russian presidential election this weekend. The group said: People will vote for whom they want, Russians will live a free life.

A number of armed groups, including the Russian Free Corps, have previously claimed responsibility for other cross-border attacks from Ukraine to Russia. (Compiled by Xiong Wenyuan)

　　Friends, do you always have a headache when thinking about international transshipment, worrying about the high tariffs and the complicated customs clearance process?Don¨t worry!!! FLY will give you the customs clearance tips today, so you can deal with it easily~In the eyes of peers, shipping agent It has good qualities that people covet, and it also has many loyal fans that people envy. https://flyportt.com/

　　1. Understand the tariff policy

　　Know yourself and your enemy, and you will never be defeated. Different countries and regions have different tariff policies on imported goods. Some have tax-free quotas, while others impose high tax rates on specific goods.

　　Therefore, before sending international express, be sure to understand the tariff policy of the destination first, plan the list reasonably, and avoid exceeding the tax-free amount and incurring unnecessary expenses.

　　2. Choose a professional shipping company

　　A reliable shipping company can provide personalized customs clearance suggestions based on the type, quantity and value of your goods to ensure that your package can pass through customs smoothly.

　　When choosing a shipping company, be sure to pay attention to its reputation and service quality. You can learn about the company’s reputation and service level through searches on major online platforms and recommendations from friends. At the same time, you should also pay attention to the company’s transportation methods and timeliness to ensure that your package can reach its destination safely and quickly.

　　import customs clearance

　　3. Fill in the declaration information accurately

　　When filling in the declaration information, be sure to maintain a high degree of accuracy and honesty. Customs will assess the value and nature of the goods based on the declaration information you provide, and decide whether to levy taxes.

　　Therefore, please be sure to fill in the product name, quantity, price and other information according to the actual situation, and do not take the chance of deliberately underreporting or concealing information. This will not only avoid unnecessary trouble, but also maintain your personal reputation.

　　4. Reasonable packaging and labeling

　　Packing and labeling are also very important parts of international transit. Reasonable packaging can protect the goods from damage during transportation, and it is also convenient for customs officers to clear customs and improve customs clearance efficiency. When packing, please pay attention to placing the goods in categories and attach a detailed list. For fragile or valuable items, please take appropriate protective measures, such as using foam boxes, bubble films and other packaging materials. This will not only ensure that the goods arrive safely in your hands, but also leave a good impression on customs officers.

　　import customs clearance

　　5. Maintain communication and cooperation

　　If you encounter customs clearance problems, please do not panic. First, stay calm and read the customs notice or email carefully; second, contact the shipping company or customs in time to communicate the situation and actively cooperate in handling; finally, provide necessary certification documents or information as required to assist in solving the problem. Through active communication and cooperation, most customs clearance problems can be properly resolved.

　　A point of sale (POS) terminal is a critical component for businesses, facilitating transactions and managing sales. However, encountering a black screen on your POS terminal can disrupt operations and lead to customer inconvenience. Here¨s a guide on how to effectively troubleshoot and resolve this issue:know point of sale terminal Our growth has to go through many hardships, but entrepreneurs are never afraid and boldly move forward. https://www.posodm.com

　　1. Check Power Connection:

　　Ensure that the point of sale terminal is properly plugged into a power source. Sometimes, loose connections or power interruptions can cause the screen to go black. Verify if the power cable is securely connected both to the terminal and the power outlet.

　　2. Inspect Display Settings:

　　Check the brightness and contrast settings on the POS terminal¨s display. It¨s possible that the screen brightness might be set too low, making it appear black. Adjust these settings to see if the screen lights up.

　　3. Restart the Terminal:

　　Perform a simple restart by powering off the POS terminal, waiting for a few seconds, and then powering it back on. This basic troubleshooting step can often resolve temporary software glitches that cause the screen to go black.

　　cash register screen.jpg

　　4. Check for Software Updates:

　　Ensure that the POS system software is up to date. Sometimes, outdated software can cause compatibility issues with the terminal hardware, leading to display problems. Update the software according to the manufacturer¨s instructions.

　　5. Inspect Hardware Connections:

　　Examine all cables connected to the POS terminal, including peripherals such as printers or scanners. A loose or faulty cable connection can disrupt the terminal¨s operation and lead to a black screen. Secure all connections and replace any damaged cables.

　　6. Battery Issues (if applicable):

　　If your POS terminal has a battery backup, check if the battery is functioning properly. A depleted or faulty battery can cause the terminal to power off unexpectedly or display a black screen. Replace the battery if necessary.