What Does a 4D Klein Bottle Look Like?

2024/06/2801:13:04 science 2115516

What Does a 4D Klein Bottle Look Like? - DayDayNews

What Does a 4D Klein Bottle Look Like? - DayDayNews

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[Source: Hebei Economic Vision] The largest and most numerous dinosaur footprint fossil remains in China were discovered in Xuanhua District, Zhangjiakou City. The remains are located in the mountains 4 kilometers south of Lishi Village, Guocun Town, Xuanhua District. It is under - DayDayNews

[Source: Hebei Economic Vision] The largest and most numerous dinosaur footprint fossil remains in China were discovered in Xuanhua District, Zhangjiakou City. The remains are located in the mountains 4 kilometers south of Lishi Village, Guocun Town, Xuanhua District. It is under

No. 1 in the country! A large area of dinosaur footprint fossil sites was discovered in Zhangjiakou. Reporters take you to explore the secrets

06/30 1053

Recently, "Eurasia Times" reported that after China conducted anti-satellite tests and anti-ballistic missile tests, it planned to conduct an asteroid impact/deflection test in 2025 or 2026, and called this test the Chinese version of the planet. War plan. - DayDayNews

Recently, "Eurasia Times" reported that after China conducted anti-satellite tests and anti-ballistic missile tests, it planned to conduct an asteroid impact/deflection test in 2025 or 2026, and called this test the Chinese version of the planet. War plan.

Chinese version of Star Wars? Indian media hypes China's asteroid impact plan, NASA satellites are launched

06/30 1884

On March 3, 2022, a team of Professor Zhou Ming from Northeast Normal University, Professor Wang Ming from Jilin University, and Professor Wei Hui from Nanjing University published an article titled "Guided Synthesis of a Mo/Zn" in Angew. Chem. Int. Ed. New research on "Dual Sing - DayDayNews

On March 3, 2022, a team of Professor Zhou Ming from Northeast Normal University, Professor Wang Ming from Jilin University, and Professor Wei Hui from Nanjing University published an article titled "Guided Synthesis of a Mo/Zn" in Angew. Chem. Int. Ed. New research on "Dual Sing

「Reprint」Angew. Chem. Int. Ed. | Directional synthesis of Mo/Zn bimetallic single-atom nanozymes

06/30 1449

Xinhua News Agency, Beijing, July 15 (Wei Mengjia, Yang Menghan) An international team led by Professor Zhu Wei of the Department of Astronomy at Tsinghua University recently announced the discovery of two rare star systems in the universe. This system is composed of two central - DayDayNews

Xinhua News Agency, Beijing, July 15 (Wei Mengjia, Yang Menghan) An international team led by Professor Zhu Wei of the Department of Astronomy at Tsinghua University recently announced the discovery of two rare star systems in the universe. This system is composed of two central

"Fog-surrounded double stars": two rare star systems discovered in the universe

06/30 1670

20 people including Fu Qiaomei and 5 teams including the molecular pharmacognosy research team of the Institute of Traditional Chinese Medicine, China Academy of Chinese Medical Sciences, won the 17th China Young Female Scientist Award and Team Award respectively. - DayDayNews

20 people including Fu Qiaomei and 5 teams including the molecular pharmacognosy research team of the Institute of Traditional Chinese Medicine, China Academy of Chinese Medical Sciences, won the 17th China Young Female Scientist Award and Team Award respectively.

The 17th China Young Female Scientists Award was announced: 20 women and 5 teams won the award

06/30 1034

Beijing Daily Client | Reporter Bai Bo The HeartCon implantable left ventricular assist system developed by Aerospace Taixin Technology Co., Ltd., a technology company in Tianjin Economic Development Zone, obtained the national Class III medical device product registration certif - DayDayNews

Beijing Daily Client | Reporter Bai Bo The HeartCon implantable left ventricular assist system developed by Aerospace Taixin Technology Co., Ltd., a technology company in Tianjin Economic Development Zone, obtained the national Class III medical device product registration certif

The first in China to complete 50 clinical trials and launch a purely domestically produced “artificial heart”

06/30 1810

Entering midsummer, the period of the year with the highest temperatures and the most changeable weather. It has just passed the summer solstice, and there are still minor and severe summer heats ahead. Even after the beginning of autumn, the sun is still not out, and there are s - DayDayNews

Entering midsummer, the period of the year with the highest temperatures and the most changeable weather. It has just passed the summer solstice, and there are still minor and severe summer heats ahead. Even after the beginning of autumn, the sun is still not out, and there are s

Wild fishing for big cocks in midsummer, these classic fishing spots are all good places for cocks to gather together.

06/30 1102

According to media reports, a new wave of epidemic broke out in Shanghai, and although the confirmed data are stable, they have been running at a high level, and medium- and high-risk areas have also increased significantly. And according to virus gene sequencing, it is the Omicr - DayDayNews

According to media reports, a new wave of epidemic broke out in Shanghai, and although the confirmed data are stable, they have been running at a high level, and medium- and high-risk areas have also increased significantly. And according to virus gene sequencing, it is the Omicr

Will the invasion of strong mutant strains and the cancellation of nucleic acid testing of imported non-cold chain items lead to a rebound in the epidemic?

06/30 1669

Imagine that you travel or work in a remote place. For example, you are looking for an oasis in the desert or collecting specimens in the mountains. You may need to track your health information in real time; or, in the event of an accident, a doctor needs urgent and Accurately m - DayDayNews

Imagine that you travel or work in a remote place. For example, you are looking for an oasis in the desert or collecting specimens in the mountains. You may need to track your health information in real time; or, in the event of an accident, a doctor needs urgent and Accurately m

No batteries required! Scientists develop new wrist-worn wireless health monitor

07/01 1403

Although mosquitoes are small in size, they have a huge impact on humans. They often make us restless and unable to sleep. Like flies, mosquitoes carry diseases and are extremely annoying insects. Only female mosquitoes suck blood. Mosquitoes are divided into male and female, and - DayDayNews

Although mosquitoes are small in size, they have a huge impact on humans. They often make us restless and unable to sleep. Like flies, mosquitoes carry diseases and are extremely annoying insects. Only female mosquitoes suck blood. Mosquitoes are divided into male and female, and

Mosquitoes—the hard-to-prevent “vampires”

06/30 1603

The first full-color picture from the new James Webb Space Telescope has been released - and it doesn't disappoint. - DayDayNews

The first full-color picture from the new James Webb Space Telescope has been released - and it doesn't disappoint.

Beautiful! NASA releases first full-color image of the universe, revealing the deepest mysteries of the universe Bilingual News

07/02 1170

Talent is the core competitiveness of an enterprise. "Wherever the talents are, our R&D center will be built!" This is a profile of Zhang Jianhong, chairman of Dongyue Group, who is eager for talents. The reporter visited two "champion" companies, Dongyue Polymer Materials Co., L

"Golden Phoenix" leads Zibo manufacturing station to the C position in the world

07/02 1861

NASA has released additional full-color space photos taken by the next-generation space telescope, the James Webb Space Telescope (JWST). NASA revealed the "Southern Ring Nebula" where stars died 2,000 light-years away. NASA explained of the nebula: "The network of telescopes has - DayDayNews

NASA has released additional full-color space photos taken by the next-generation space telescope, the James Webb Space Telescope (JWST). NASA revealed the "Southern Ring Nebula" where stars died 2,000 light-years away. NASA explained of the nebula: "The network of telescopes has

Nasa releases mysterious and spectacular cosmic photos of the Milky Way

07/02 1288

Just now, Henan Real Biotechnology Co., Ltd. announced that the results of the registration phase III clinical trial of Azivudine Tablets for the treatment of new coronavirus pneumonia have met expectations. - DayDayNews

Just now, Henan Real Biotechnology Co., Ltd. announced that the results of the registration phase III clinical trial of Azivudine Tablets for the treatment of new coronavirus pneumonia have met expectations.

Big news breaks out in Henan! The biggest nemesis of the new coronavirus is finally coming

07/02 1196

On the vast African continent, there lives a large tree species called baobab. It is currently one of the largest and longest-lived plants in the world. It is said that it can last for up to five thousand years on the earth. It has a long life and provides abundant resources. It - DayDayNews

On the vast African continent, there lives a large tree species called baobab. It is currently one of the largest and longest-lived plants in the world. It is said that it can last for up to five thousand years on the earth. It has a long life and provides abundant resources. It

The baobab tree, which can eat, drink and live, and has a lifespan of 5,000 years, has changed drastically after being introduced to China.

07/02 1712

On October 4, 1957, all Americans were stunned by the news: the Soviet Union successfully launched the world's first artificial earth satellite (Sputnik 1-Sputnik 1). Although this is mankind's first step into space, it marks the beginning of human spaceflight and creates a new e - DayDayNews

On October 4, 1957, all Americans were stunned by the news: the Soviet Union successfully launched the world's first artificial earth satellite (Sputnik 1-Sputnik 1). Although this is mankind's first step into space, it marks the beginning of human spaceflight and creates a new e

Inside story of the world's first artificial satellite

07/02 1112

In today's market, the market demand for finely decorated houses is huge, and they are very popular among everyone. The market is hot and it is a good choice for people to start a business. Centenary Lingxiu's whole-house hardcover panels are green, environmentally friendly, and - DayDayNews

In today's market, the market demand for finely decorated houses is huge, and they are very popular among everyone. The market is hot and it is a good choice for people to start a business. Centenary Lingxiu's whole-house hardcover panels are green, environmentally friendly, and

Centenary Lingxiu's whole house is exquisitely decorated, with ever-changing magic, and a new interpretation of aesthetic space

07/02 1481

Bougainvillea is a common flowering plant in daily life. Summer is the flowering period of bougainvillea. The hotter the weather and the stronger the light, the more bougainvillea will bloom. However, many friends say that the bougainvillea they care for is blooming. However, the - DayDayNews

Bougainvillea is a common flowering plant in daily life. Summer is the flowering period of bougainvillea. The hotter the weather and the stronger the light, the more bougainvillea will bloom. However, many friends say that the bougainvillea they care for is blooming. However, the

How to prune bougainvillea in summer? There are different methods for large and small potted plants. If you cut them wrong, be careful not to see the flowers.

07/02 1996

Low molecular compounds in some plastic products can easily migrate into food and cause certain toxicity to the human body. These 5 habits in life will quietly accelerate the entry of toxic substances into food. Check to see if you have any in your home: Misunderstanding 1: Use p - DayDayNews

Low molecular compounds in some plastic products can easily migrate into food and cause certain toxicity to the human body. These 5 habits in life will quietly accelerate the entry of toxic substances into food. Check to see if you have any in your home: Misunderstanding 1: Use p

These 5 plastic usage habits are “chronically poisoning” yourself

07/02 1317

Do you feel that every time you learn English, it is too monotonous and boring? Is it difficult to keep studying? Today I will share with my sisters 6 high-scoring cartoons with American pronunciation, all of which are sentences and vocabulary used in daily life. The overall Engl - DayDayNews

Do you feel that every time you learn English, it is too monotonous and boring? Is it difficult to keep studying? Today I will share with my sisters 6 high-scoring cartoons with American pronunciation, all of which are sentences and vocabulary used in daily life. The overall Engl

The reputation exploded! 6 animations to help you learn English and speak English painlessly

07/02 1117

The weather was extremely hot and there was no wind. The cicadas on the branches are still chirping vigorously. This summer belongs to them. No one can love summer as much as they do, just like farmers love the land. Perhaps this is their mission. After pruning the flower branche - DayDayNews

The weather was extremely hot and there was no wind. The cicadas on the branches are still chirping vigorously. This summer belongs to them. No one can love summer as much as they do, just like farmers love the land. Perhaps this is their mission. After pruning the flower branche

A cross-world conversation is nothing more than your own choice

07/02 1473

Hello everyone, I am Tangshan Nice. Today I will share with you how to reduce the impact on existing traffic during the Pinduoduo store adjustment process. 1. Pay attention to methods when optimizing titles. Each modification, including swapping the order, shall not exceed 5 word - DayDayNews

Hello everyone, I am Tangshan Nice. Today I will share with you how to reduce the impact on existing traffic during the Pinduoduo store adjustment process. 1. Pay attention to methods when optimizing titles. Each modification, including swapping the order, shall not exceed 5 word

How to reduce the impact on existing traffic during the Pinduoduo store adjustment process

07/02 1663