Scientists have found that the levels of toxic metals and trace elements in fruit juices and soft drinks are increasing
A recent study conducted by Tulane University found that the content of toxic metals in some popular drinks exceeded the federal standard for safe drinking water. The investigation tested 60 beverages and found that the content of a certain toxic metal in 5 of them was higher than the safety value specified by federal standards...
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Shenzhou 15 010203 is in good condition! Take a look at the high-definition large picture of the scene first
Source: Human spaceflight HornLarge high-definition picture of Shenzhou 15 returning to the scene...
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Lack of social interaction in the elderly is associated with reduced Brain size
Xinhua News Agency, Beijing, July 14 (Xinhua News Agency) - Previous studies have shown that lack of social interaction will make the brain lack of stimulation from dialogue, thus increasing the risk of dementia. According to a new Japanese study, lack of social interaction in the elderly is also associated with reduced Brain size...
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Option is a good thing that most people really don't know how to use!
OverviewNullPoInterException, ChInese name:Null poInter exceptionNPE, also known as NPE, is one of the most common error anomalies In software systems.Long ago, the Google Guava project IntroducedOptionalNull poInter exceptionNullTo expect programmers to write code that is both neat and more readable...
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New Technical Director: Discovered who is using delete to delete data and directly fired!
delete Mysql MySQL delete MySQL MySQL MySQL MySQL MySQL InnoDBMyISAMMemory BMySQL MySQL 16KBMySQL MySQL B B MySQL MySQL MySQL ACID MySQL MySQL MySQL MySQL deletetruncatedrop drop > truncate >> DELETEDELETEDELETE from TABLE_NAME where xxxDELETE DMLtrigger InnoDB DELETEmysql delete ** DELETErollback segementcommit;delete from table_name,MyISAM InnoDB ;delete from table_name where xxx , InnoDBMyISAM;delete optimize table table_name InnoDBMyISAM deleteoptimize table SQLMcsjdemodemo2select concat(round(sum(DATA_LENGTH/1024/1024),2),'M') as table_size from information_schema.tables where table_schema='csjdemo' AND table_name='demo2';Sizeoptimize table demo2sizedelete redoundo rollback) dropDrop table TablenameDDLTruncate drop table table_name InnoDB MyISAM; drop (constrain)(trigger)(index); /, invalid drop deletetruncatedroptruncateDDL rollback segment trigger truncate table table_name InnoDBMyISAM truncate tabledrop table creat,create table drop table;truncate auto_incrementMyISAMtruncateauto_increment1deleteauto_incrementInnoDBtruncateauto_increment1deleteauto_incrementdeleteMySQLauto_increment1InnoDB auto_incrementdelete auto_increment1auto_increment SELECT 1+MAX(ai_col) FROM t truncateDELETE DELETEDELETEInnoDBdeletedeleteInnoDBInnoDBtablespace > segmentinode > Extent >PageInnodbsegmentextentsegmentFREE_PAGE32page32page1extent1extent32MBextent32MB4extentMySQLdata pageMySQL CrashInnodbInnoDBUndo****MySQLinformation_schema****innodb_file_per_table=1table_name...
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Make American fighter jets unable to fly! China starts a counterattack, foreign media: this is more serious than chips
followThe hostility of the United States towards China has been ongoing for many years, only because the United States has always believed that China's economic development will inevitably affect its interests, and even threaten its hegemonic position. However, because China has always adhered to an independent and independent development path, although it needs to learn from advanced countries such as the United States in many fields, its dependence is not high...
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Attention to those who pay with WeChat Pay! There is a big difference between 'I sweep you' and 'you sweep me'. Don't make any mistakes again
In the digital age, especially mobile payments such as WeChat have become commonly used payment methods in our daily lives. It has brought us a lot of convenience, but there are also some risks and hidden dangers...
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Urban Highway Hidden Underground | Discovering the Great Bay Area
|Greater Bay Area Synthetic Biology Laboratory|Controversy over the safety of chemically synthesized pigmentsHigh cost of natural pigmentsHow can biosynthetic pigments break through?Everything can be AICan artificial intelligence really design proteins?These cutting-edge achievements in Synthetic biologyIs being implemented in a location in the Greater Bay AreaAs a representative discipline of biotechnology and information Technological convergenceSynthetic biology is considered the futureOne of the disruptive technologies.At the Shenzhen Engineering Biology Industry Innovation CenterA large numberResearchers from startups in the Greater Bay AreaIs it cheaper than natural pigments? More environmentally friendly than chemically synthesized pigments?Biosynthetic pigments stand out in a variety of pigment production industries!Becoming a new trend in the development of pigment production industry?Yuan Xiaoli:Since entering human civilization, we have experienced several forms of civilizationAgricultural Civilization PeriodHuman beings obtain material and energy mainly through Natural product; After entering the industrial civilization, due to technological progress, people synthesized a lot of substances and energy through chemistry...
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How powerful is the Baihetan Dam that China spent 180 billion yuan to build? Fill West Lake with water in 6 minutes
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The sales of air frying pan dropped precipitously, with several major shortcomings outstanding. Is there a way out for small household appliances?
followThe air frying pan was all the rage for a time, and was once called the "God frying pan" by frying lovers. However, the air frying pan, which has sprung up like mushrooms, has suffered Waterloo this year...
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New low in history! How does a TV set that won't move for 200 yuan lose the hearts of consumers?
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Tencent, who has been struggling for 8 years and has a lot of money, cannot resist it
The 'false fire' of the ear economy is cooling down again.Author | Peach CrispSource | Tiantian Finance 116For those who enjoy listening to books, your ears will be missing another 'old friend'...
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