Statistics after the unified unit of Oracle group by and case when

Table data select * from ware_info21 sulfuric acid 1.0000 kg 2 hydrochloric acid 2.0000 kg 3 potassium permanganate 3.0000 tons 4 potassium permanganate 4.0000 kg 5 potassium permanganate 5000.0

2022-06-01 Database 我要分享

The difference between lithium-ion battery and lithium-ion battery (potassium metal battery becomes a competitor of lithium-ion battery technology)

From mobile phones to solar energy to electric cars, people rely more and more on batteries. With the increasing demand for safe, efficient and powerful energy storage, there is a growing demand for promising alternatives to rechargeable lithium-ion batteries. Lithium-ion batteries have been the leading technology in this field. Published in the Proceedings of the Academy of Sciences

2022-05-31 Mobile Phone 我要分享

If you want the fish to fly, you only need to change two genes.

Flying fish, a strange way of moving, seems to be a strategy to avoid predators under the water. (photo Source: John Cobb) suddenly, a clever figure pierced the tranquil water and glided rapidly above the water-the vigorous posture of a flying fish. What makes these people should live in water?

2023-11-24 IT Information 我要分享

Why can the iron smooth the clothes?

The clothes are worn out and wrinkled. Don't worry, it will be smoothed with an iron, but do you know why the iron can iron out the clothes? Q1. How to keep the cup warm? What method can be used to strengthen the thermal insulation effect? By ~ A: generally rely on vacuum interlayer. There are three ways of heat transfer, namely, heat conduction,

2023-11-24 IT Information 我要分享

The wooden "robot fish" swimming through the port of Barcelona has become a pioneer of modern air-independent propulsion systems.

This article comes from the official account of Wechat: ID:fanpu2019, author: Ma Zhiheng, Spain, more than 170 years ago, a young man began to raise money to build a "robot fish" that can dive. He hopes that fishermen can take this wooden submersible to collect corals safely.

2023-11-24 IT Information 我要分享

Scientists have developed new processes that can efficiently collect carbon dioxide and convert it into fuel

CTOnews.com, Nov. 2 (Xinhua)-- scientists are actively exploring ways to extract carbon dioxide from the air or power plant exhaust and turn it into something useful. Researchers at the Massachusetts Institute of Technology and Harvard University have recently developed a new and effective process that can convert dioxygen

2023-11-24 IT Information 我要分享

How many years is enough salt in China?

This article comes from the official Wechat account: Earth knowledge Bureau (ID:diqiuzhishiju). In 2011, the nuclear leak caused by the earthquake and tsunami in Japan spread across the country, and there was a scramble for salt in the country in case the sea salt was contaminated by nuclear radiation in Japan. two

2023-11-24 IT Information 我要分享

Development History and Future Application Prospect of Glass

Glass works of art 1. The development of glass 1.1 according to the relevant literary and historical records, dating back to 3000 BC to 2000 BC, more mature glass manufacturing technology has appeared in Egypt or Mesopotamia. At the same time, there are legends.

2023-11-24 IT Information 我要分享

How can an alcohol tester identify drunk driving by blowing a breath?

We often hear or see traffic accidents caused by drivers' drunken driving. in the news reports of accidents, we often talk about the amount of alcohol in the driver's blood and the legal limit of alcohol in the blood. For example, a driver may be tested for a blood alcohol level of 0.15, while the legal limit

2023-11-24 IT Information 我要分享

Scientists have discovered the remains of the oldest planet in the Milky way with a history of more than 10 billion years.

According to reports, astronomers at the University of Warwick have discovered the oldest star in the Milky way, which is accumulating debris from orbiting stars, making it one of the oldest rocky and icy planetary systems in the Milky way. The findings are published in the November 5 issue of the monthly Proceedings of the Royal Astronomical Society.

2023-11-24 IT Information 我要分享

Controversy over diagnostic criteria for hypertension: what is the value of blood pressure, which can be regarded as hypertension?

This article comes from the official account of Wechat: SF Chinese (ID:kexuejiaodian), author: SF everyone's physical condition is specific, the diagnosis and classification of a disease is of great significance to achieve accurate medical treatment and "prescribe the right medicine to the case". Hypertension is a very common chronic disease.

2023-11-24 IT Information 我要分享

Stone crushers near bhopal mp india

Madhya Pradesh... Stone crusher plant cost india in Bhopal, Madhya Pradesh, India. MADHYA PRADESH LA

2022-06-02 Servers 我要分享

I am 22 years old this year. Can I grow taller? the universe theory can.

I wonder if you have a dream that you will continue to grow taller. In physics, there are also some special ways to support us to expand Q1. Why do you have to add cold water to cook dumplings three times? By replied anonymously: earlier cooking dumplings with cold water is probably because the firepower control is not as freewheeling as it is now, and the water boils too fast, very often.

2023-11-24 IT Information 我要分享

The Miracle of the History of Science: the contribution of intuition beyond understanding

This article comes from the official account of Wechat: back to Park (ID:fanpu2019), written by John D. Barrow, translated by Tang Jing and Li Pan in the face of more than 60 known elements, all chemists want to sort out a system, but only one person succeeded: he made a picture.

2023-11-24 IT Information 我要分享

Cisco security team: hackers are attacking Excel users by injecting malicious code into XLL files

CTOnews.com, December 23 (Xinhua)-- Microsoft began preventing Word, Excel and PowerPoint from using certain macros (Macro) in July to prevent network attacks against Microsoft 365.

2023-11-24 IT Information 我要分享

The Beginning of Summer today: may you be born like a summer flower, gentle as ever

CTOnews.com May 6 news, today is May 6, and it is also the Beginning of Summer of the 24 solar terms-- the first solar term in summer. The arrival of the Beginning of Summer means that we have come to summer. Usually May 5 or May 6 every year

2023-11-24 IT Information 我要分享

The Ministry of Science and Technology announced the top ten advances in China's science in 2022, Zhu Rong Mars rover and FAST Sky Eye were selected.

Thank CTOnews.com netizens Rangers for their attitude and Mr. Aviation's clues to deliver! CTOnews.com March 18 news, according to the Chinese Academy of Sciences news, March 17, the Ministry of Science and Technology High Technology Research and Development Center (basic Research Management Center) released

2023-11-24 IT Information 我要分享

Dyson Zone air purification headphones are available for pre-sale, priced at 6699 yuan

CTOnews.com March 20 news, Dyson Zone air purification headphones open for pre-sale, priced at 6699 yuan, officially launched on April 6. Dyson officials say the headphones have a dual purification system that can effectively filter pollutants and hazards in the city.

2023-11-24 IT Information 我要分享

Some colors have been sold out: Dyson Zone air purification headphones are pre-sold for 6699 yuan

Dyson Zone air purification ears are now available for pre-sale at 6699 yuan. At present, (15:45 on March 27th) JD.com has sold 2119 units, some colors have been sold out: JD.com Dyson Zone air purification headphones tricolor option 6699

2023-11-24 IT Information 我要分享

Air fryer French fries frozen semi-finished (air fryer French fries)

Hello everyone, Lin Fei to answer the above questions, air fries frozen semi-finished products, air fries many people do not know, now let's take a look! French fries, a favorite snack for many young people, especially children, is as simple as air fries. They can be found in

2022-05-31 Mobile Phone 我要分享