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[Edit this paragraph]EB (Electronic Business)

EB (Electronic Business) Business)

is e-commerce in a broad sense;

EC (Electronic Commerce)

is e-commerce in a narrow sense, but if you choose e-commerce The standard English abbreviation is still EB. EC should be electronic trade, which is just a pure trade aspect. EB is e-commerce, including information release, electronic transactions, logistics, etc.

E-commerce comes from the English ELECTRONIC COMMERCE, abbreviated as EC. As the name suggests, its content includes two aspects, one is electronic means, and the other is business activities. E-commerce refers to the use of simple, fast, and low-cost electronic communication methods for buyers and sellers to conduct various commercial activities without meeting.

E-commerce can be accomplished through a variety of electronic communication methods. Simple, for example, if you conduct business activities with customers by making phone calls or sending faxes, it seems that it can also be called e-commerce; however, the e-commerce that people are discussing now is mainly completed by EDI (Electronic Data Interchange) and INTERNET. of. Especially as INTERNET technology becomes increasingly mature, the real development of e-commerce will be based on INTERNET technology. Therefore, some people refer to e-commerce as IC (INTERNET COMMERCE).

From the perspective of trade activities, e-commerce can be realized in multiple links. Therefore, e-commerce can also be divided into two levels. Lower-level e-commerce such as e-commerce, e-commerce, and e-commerce Contracts, etc.; the most complete and advanced e-commerce should be able to use the INTENET network to carry out all trade activities, that is, to completely realize information flow, business flow, capital flow and part of logistics online. In other words, you can Starting from finding customers, all the way to negotiation, ordering, online payment (receipt), issuance of electronic invoices, electronic customs declaration, electronic tax payment, etc. are all completed in one go through the INTERNET.

To achieve complete e-commerce, many aspects will be involved. In addition to buyers and sellers, banks or financial institutions, government agencies, certification agencies, distribution centers and other institutions must also join. Since all parties involved in e-commerce do not physically meet each other, the entire e-commerce process is not a replica of business activities in the physical world. Conditions such as online banking and online electronic payment and technologies such as data encryption and electronic signatures are important in e-commerce. plays an important and indispensable role.

[Edit this Section] EB (Ethidium bromide, ethidium bromide)

Ethidium bromide is a highly sensitive fluorescent stain used to observe DNA in agarose and polyacrylamide gels. Ethidium bromide is excited with a standard 302nm ultraviolet light transmittance instrument and emits an orange-red signal, which can be photographed with Polaroid film or a gel imaging processing system with a CCD imaging head.

The most common method for observing DNA in agarose gels is to stain with the fluorescent dye ethidium bromide. Ethidium bromide contains a tricyclic planar group that can be embedded between the stacked bases of DNA. . Its binding to DNA has little base sequence specificity. In saturated solutions with high ionic strength, approximately one ethidium bromide molecule is inserted every 2.5 bases. When the dye molecule is inserted, its planar groups are perpendicular to the axis of the helix and interact with the upper and lower bases through van der Waals forces. The fixed position of this group and its close proximity to the base cause the dye bound to DNA to fluoresce with an increased fluorescence yield compared to the dye in free solution.

DNA absorbs UV radiation at 254nm and passes it to the dye, while the bound dye itself absorbs optical radiation at 302nm and 366nm. In both cases, the absorbed energy is re-emitted at 590nm in the red-orange region of the visible spectrum. Since the fluorescence yield of the ethidium bromide-DNA complex is 20-30 times higher than that of the dye without DNA binding, when the gel contains free ethidium bromide (0.5ug/ml), less can be detected. to 10ng of NDA band.

Ethidium bromide can be used to detect single- or double-stranded nucleic acids (DNA or RNA). However, the affinity of the dye for single-stranded nucleic acids is relatively small, so its fluorescence yield is also relatively low. In fact, most fluorescence from staining single-stranded DNA or RNA is produced by the dye binding into the molecule to form shorter intrastrand helices.

Although in the presence of this dye, the electrophoretic mobility of linear DNA is reduced by about 15%. Therefore, when it is necessary to know the accurate size of DNA fragments (such as the identification of DNA restriction enzyme digestion patterns), The gel should be electrophoresed without EB and stained with EB after electrophoresis. After dyeing, destaining is usually not required. However, when detecting small amounts of DNA fragments (less than 10ng), the stained gel usually needs to be destained.

[Edit this paragraph] Damage of ethidium bromide

Ethidium bromide can be embedded in base molecules, causing mismatches. Ethidium bromide is a strong mutagen and highly carcinogenic!

SYBR Green I and ethidium bromide (EB) Ames test results show that EB easily causes organism mutations. (Singer et al., Mutat. Res. 199, 439: 37- 47.)

[Edit this paragraph] Purification treatment of ethidium bromide solution

Since ethidium bromide The tablets have a certain degree of toxicity. After the experiment, the solution containing EB should be purified before being discarded to avoid polluting the environment and harming human health.

(1) For solutions with EB content greater than 0.5mg/ml, the following treatments can be performed:

① Dilute the EB solution with water to a concentration lower than 0.5mg/ml;

②Add one volume of 0.5mol/L KMnO4, mix well, then add an equal amount of 2.5mol/L HCl, mix well, and leave it at room temperature for several hours;

③Add one volume 2.5mol/L NaOH, mix well and discard.

(2) Solutions with EB content less than 0.5mg/ml can be processed as follows:

① Add activated carbon in an amount of 1mg/ml, shake gently from time to time to mix, and leave at room temperature for 1 hour ;

② Filter with filter paper and seal the activated carbon and filter paper and discard.

[Edit this paragraph] EB ("Encyclopedia Britannica")

"Encyclopedia Britannica" (also known as "Encyclopedia Britannica", referred to as EB), is considered It is the most well-known and authoritative encyclopedia in the world today, and one of the three major encyclopedias in the world (Encyclopedia America, Encyclopedia Britannica, and Collier's Encyclopedia). Encyclopedia Britannica was born in the atmosphere of the Scottish Enlightenment in the 18th century. Compilation of the first version of Encyclopedia Britannica began in 1768 and took three years to complete the third volume of Encyclopedia Britannica in 1771.

After the American publisher Encyclopedia Britannica, Inc. bought the copyright of EB in 1901, the publishing and editing work gradually moved to the United States; now the Encyclopedia Britannica Company as we know it is an American company headquartered in Chicago . In 1929, with the publication of the 14th edition, Encyclopedia Britannica invested a lot of manpower and material resources, invited 4,000 scholars and experts from nearly 140 countries and regions to participate in writing, and included a large number of materials from outside Europe to complete all twenty-four volumes. The fourteenth edition has established its highest and most authoritative status in the encyclopedia world.

"Encyclopedia Britannica" is a product of the Scottish Enlightenment, created by local bookseller and printer Colin Macfarquhar and sculptor Andrew Bell It was decided to publish a set of reference books in the name of the "Gentlemen's Association". They hired William Smellie, then 28 years old, and asked him to edit a three-volume, ***100-chapter Encyclopedia Britannica for a fee of ￡200. The first volume was published in December 1768 and sold for sixpence. In 1771, three volumes were completed, with 2391 pages, including 160 copper plate engravings, and the total sales volume was 3000 sets. The three volumes are about the same length and are divided into A-B, C-L and M-Z.

Since the first edition was so successful, they decided to publish a larger second edition. Smelley refused to continue editing, so McFarcar himself became editor. The second edition consisted of 10 volumes, 8595 pages, and was published from 1777 to 1784.

However, the third edition, published between 1788 and 1797, truly reached the standards of an encyclopedia. The original editor of this edition was MacFarcar, who was succeeded by George Gregor after MacFarcar's death. It has 18 volumes, plus two supplementary volumes, and more than 16,000 pages. This edition also includes articles written specifically for Encyclopedia Britannica by experts and scholars hired by Greg. This edition laid the foundation for Encyclopedia Britannica to become one of the most important reference books in the world.

Up to the 10th edition, the important articles of Encyclopedia Britannica were often much longer and more scholarly than those of modern encyclopedias. In the 19th century, articles in the Encyclopedia Britannica often contained the author's latest achievements.

The French "Encyclopedia, Dictionary of the Sciences, Arts and Crafts" is generally regarded as the model for the "Encyclopedia Britannica". But Encyclopedia Britannica is much more conservative. Later versions were often dedicated to the reigning king or queen.

From the fourth to the sixth edition there are articles by many well-known Scottish and English scholars: William Hazlitt, John Stuart Mill, Thomas Robert Malthus, David ·Ricardo, Walter Scott, etc. Thomas Young appended his translation of the Egyptian hieroglyphs from the Rosetta Stone to his article on Egypt.

In the late 1820s, the publishing house of the Black Brothers in Edinburgh acquired the rights to the Encyclopedia Britannica, and they published the seventh and eighth editions. The Ninth Edition, also known as the Scholar's Edition, was published from 1875 to 1889 and included many profound scholarly articles by well-known authors. Some people call it the pinnacle in the history of English encyclopedias. At that time, some British people believed that the book's authority was "second only to God."

In 1895, Blake's publishing house moved to London, and in 1901, "Encyclopedia Britannica" was sold to the "Times" newspaper. The 11th edition of the tenth edition, which also includes maps and catalog volumes, is actually a supplement to the ninth edition. From 1897 to 1922, American Horace Everett Hooper served as editor-in-chief. Beginning with the 11th edition in 1909, Cambridge University helped edit and publish it.

The 11th edition, published from 1910 to 1911, was essentially rewritten and is considered the classic edition of Encyclopedia Britannica, while also reflecting its new publication business’s new goals. In order to attract readers and promote sales, this edition's articles retain their academic rigor and improve their readability. The articles are not as long as in the past, but they are still very thorough. This version is now in the public domain.

This edition was also the first in which all volumes were published simultaneously, rather than one after the other. All its content can be viewed here.

Later, the publishing rights and trademark of "Encyclopedia Britannica" were sold to Sears Department Store and moved to Chicago, Illinois, USA. Both the 12th and 13th editions are published in three supplementary volumes, which must be used in conjunction with the 11th edition. The 14th edition published in 1929 once again showed the changes in the Encyclopedia Britannica. It has fewer volumes and shorter articles to allow more users to use it as a reference book. But others criticized it for removing content that was unfavorable to the Catholic Church.

In 1941, Sears Department Stores donated its rights to the University of Chicago. William Banton served as editor-in-chief from 1943 until his death in 1973, and then until his wife's death in 1974.

In January 1996, Swiss billionaire Jacob Savery bought the rights to Encyclopedia Britannica.

In China, Encyclopedia Britannica Publishing House cooperated with China Encyclopedia Publishing House in 1980 and published the 10-volume Chinese version of "Concise Encyclopedia Britannica" in 1986. Volume 11 was added in 1990. In April 1994, a new Encyclopedia Britannica International Chinese Edition was launched. ***20 volumes, with 81,600 entries, 15,300 pictures, and more than 43.5 million words.

Encyclopedia Britannica is not lagging behind in the development of core media for electronic publishing. The first multimedia encyclopedia, Compton’s Multimedia Encyclopedia, was published in 1989. In 1994, the company launched Britannica Online, the first encyclopedia on the Internet. Today, although the publishing medium has changed, Encyclopedia Britannica's mission remains the same as when it was founded in 1768: to be the global leader in reference works, education and learning!

Encyclopedia Britannica, after more than two hundred years of development and improvement of revisions and reprints, has formed an English printed version bound in 32 volumes, and electronic and online versions have also been launched. Encyclopedia Britannica Online was officially released in 1994. In addition to the contents of the printed version, the online version also includes the latest revisions and a large number of articles not found in the printed version, with 98,000 searchable entries. It contains 322 hand-drawn line drawings, 9,811 photos, 193 national flags, 337 maps, 204 animated images, 714 tables and other rich content.

[Edit this paragraph]EB=Employee Benefit Enterprise Employee Benefit Plan

From the perspective of modern human resources management, employee benefit plan (Employee Benefit) refers to the benefits provided by the enterprise to its employees. A “package” of non-wage income benefits.

It generally consists of the following parts:

(1) The social security system enforced by national legislation, including basic pension insurance, medical insurance, unemployment insurance, work-related injury insurance and other statutory plans;

(2) Commercial insurance plans such as enterprise annuities, supplementary medical insurance, life insurance, accident and disability insurance funded by the enterprise;

(3) Equity and option plans;

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(4) Housing, transportation, education and training, paid leave and other welfare plans.

The employee welfare plans to be developed by the insurance industry specifically refer to the second category of the above-mentioned plans, that is, life insurance companies provide pension, health, disability, death and other risk protection for corporate employees in the form of group insurance. benefits.

According to relevant senior figures in the insurance industry, employee benefits of Chinese enterprises have generally gone through three stages of development.

Turnkey stage: During the planned economy period and the early stage of reform, the main content of employee benefits almost included all aspects of food, clothing, housing, transportation, life, old age, illness, and death, etc. The form of benefits was mainly material, including welfare housing allocation and public medical care. , free education, etc., and the insurance costs are entirely borne by the state or enterprises.

Transition stage: In the transition stage from the planned economy to the market economy system, the form of welfare is mainly monetary payment, which includes various bonuses, allowances, subsidies and relief funds. At this stage, the welfare awareness from enterprises to employees has increased significantly, but the inertia of the traditional system continues, and the entire welfare system has not yet been established. Therefore, companies with good operating efficiency mainly distribute benefits to employees in the form of currency.

At present, our country has basically gone through the first two stages and is gradually moving towards the comprehensive service stage: as people’s income levels increase, the marginal utility of monetary income decreases, and people pay more attention to life and health and risk protection. . At the same time, with the establishment of modern enterprise systems, the concept of human resource management is gradually introduced into enterprise management. Therefore, the characteristic of enterprise employee benefits at this stage is to provide service-oriented products to employees, including accident insurance, pensions, medical insurance, travel, paid holidays, etc.

[Edit this paragraph] EB Bugatti Veyron EB16.4

Bugatti EB16.4 Veyron will have two data that break the world's automotive industry records: the top speed is 405.7 kilometers/ At that time, it was 19 kilometers per hour faster than the record of 386.6 kilometers per hour set by the McLaren team in the Formula One race that had not been broken for 10 years. Each car was priced at approximately US$1.2 million (including tax).

This two-seat two-door super sports car is an improvement on the concept car shown at the 1999 Tokyo Motor Show and has been approved for formal production. The model at that time was called EB18/4 Veyron, which used a 6.3-liter 18-cylinder engine, while the new EBD16.4 used a W16 engine. It was actually two V8 engines with a small angle, combined in a W-shape at an angle of 90°. Maximum power

736kW/6000r/min, maximum torque 1250Nm/2200r/min, acceleration time from 0 to 100km/h is 2.9 seconds, 0.3 seconds faster than the F1 record, and it takes 300km/h to start from the same place. Time is 14 seconds. The engine has 4 turbochargers with intercooling and a displacement of 8 liters. The new 7-speed dual-clutch manual transmission contributes to the excellent acceleration. The shift lever is a paddle behind the steering wheel (sequential manual shifting) or a shift lever on the floor, 4-wheel drive.

The overall shape of the vehicle is basically the same as that of the concept car. The crown-shaped radiator grille, the protrusion on the center line that runs through the entire car, the short nose, the 20-inch large tires, as well as the EB logo, lamps, etc. are all traditional Bugatti designs and will not and should not be changed. However, the wheelbase has increased by 50mm compared to the concept car, reaching 2700mm, and the interior space is obviously slightly larger. In order to solve the problem of excessive pressure in the front wheel well caused by excessive vehicle speed, a drag air vent was added to the front lower hinge of the door, thereby adjusting the side shape, and therefore the body was changed to two-color spray painting to enhance the three-dimensional effect. . As the speed of the car increases, the rear is equipped with a rear wing that automatically lifts 200mm to prevent the rear wheels from floating at high speeds; for the same reason, a tray that covers the bottom of the car and a Le Mans racing-style car at the rear are also used Air outlet diffuser. The two air intake pipes on the top still exist, and the ridges of the body are more clearly highlighted, adding a powerful flavor to the original dynamics. The interior is still all wrapped in soft leather, and the aluminum surface of the center console has not changed. The steering wheel embedded with the initials EB of company founder Ettore Bugatti retains the three-spoke shape, but the engine tachometer limit value in the instrument is 8000r/min, and the speedometer limit value is 450km/h.

The car will be produced in a new factory on the outskirts of Molsheim, France, with an annual manual output of about 50 vehicles.

[Edit this paragraph]EB (abbreviation of ExaByte)

abbr. Exabyte, 1EB=1024PB

Computer storage unit

< p> Bit (Binary Digits): stores a binary number, that is, 0 or 1, the smallest storage unit.

Byte byte: 8 binary bits are one byte (B), the most commonly used unit.

Computer storage units are generally represented by B, KB, MB, GB, TB, EB, ZB, YB, BB. The relationship between them is:

1KB (Kilobyte) Byte) = 1024B,

1MB (Megabyte, also called "megabyte") = 1024KB,

1GB (Gigabyte, also called "gigabyte") = 1024MB,

1TB (Trillionbyte) = 1024GB, of which 1024 = 2^10 (2 to the 10th power),

1PB (Petabyte) petabyte) = 1024TB,

1EB (Exabyte, exabyte) = 1024PB,

1ZB (Zettabyte, 100 trillion bytes) = 1024 EB,

1YB (Jottabyte) = 1024 ZB,

1BB (Brontobyte) = 1024 YB.< /p>

Note: “Trillion” is a unit of quantity in the millions.

Attached: the full name and transliteration of the base unit

yotta, [尧]It, Y. 10^21,

zetta, [泽]It, Z . 10^18,

exa, [AI] Khazar, E. 10^15,

peta, [shoot] it, P. 10^12,

tera, [太]拉, T. 10^9,

giga, [吉]卡, G. 10^6,

mega, [万], M . 10^3

[Edit this paragraph] The Electric Boogaloos

The Electric Boogaloos is referred to as EB. This group consists of 5 members, namely Mr Wiggles, Poppin Pete, Skeeter Rabbit, Suga Pop, and the boss Boogaloo Sam (Rabbit died. Now generally pete is more active.)

The group created popping and boogaloo dance styles that are popular around the world. In the mid-1970s, Boogaloo Sam established a set of moves that evolved into their respective styles. He then taught these dance styles to members of his group, The Electric Boogaloos. Thirty years later, EB is still active, performing, and teaching around the world, spreading knowledge of their own dance and other dance styles in the funk movement on the west coast of the United States.

It can be said that he is a master at the founder level of poppin. Now he usually performs and referees everywhere.

EB was born in 1977 when Boogaloo Sam founded The Electric Boogaloo Lockers - the original team was : THE ELECTRIC BOOGALOO LOCKERS (1977, Fresno City, California) Boogaloo Sam: The founder of Popping style and Boogaloo style SLIDE(NATE): The dance group established with Sam Robot Joe: OG member, Robot is his main style Toyman Skeet: The founder of Toy man style Ticking Will: Learned the Ticking style Twist-O-Flex from Sam Don: Don is the hardest hitting popper THE ELECTRIC BOOGALOOS (1978, Long Beach City, California) Boogaloo Sam: Popping style and Boogaloo The founder of the style Popping Pete: Boogaloo Sam's brother Tickin Deck: Boogaloo Sam's other brother Robot dane: Sam became an EB member after fighting with him (Sam won) Puppet Boozer: Sam taught him and became famous for the Puppet style Creepin Sid : From Arkansas, learning Boogaloo Scarecrow Sculley : Sam taught him the scarecrow style Darryl (King Cobra) : The founder of snaking style George (king python) : One of the veteran poppers of longbeach

The Electric Boogaloos Personal Introduction

Boogaloo Sam:

Inspired by watching the original Locker demonstration on television, in 1975 Sam began innovating the move that became known as the boogaloo or boogie. In 1975-1976 Sam created a set of moves known today as popping and boogaloo. In 1977, Sam founded Electronic Boogaloo Lockers, which later became Electric Boogaloos.

Today Sam is still working in EB as a leader and member. A true innovator in funk styles, Sam introduced funk styles to the world, to you and me!

Popin Pete:

A child who grew up in Fresno, California, young Pete started his career as a dancer by watching Soul Train and being a robot. In 1978, Pete started learning popping from his brother Sam, whom he often looked up to. "I had to start with pop because boogaloo was too difficult for me!" Popin Pete began to innovate styles such as crazy legs, ET, spider man and sleepy style. Today, Pete and other EB members spread popping and boogaloo knowledge around the world.

Skeeter, Rabbi:

Skeet started dancing in Los Angeles when he was a child. In 1978, Skeet learned to lock and danced popping with Boogaloo Sam and Poppin Pete.

In 1979 Skeet became an official member of EB and was a pioneer of popping and boogaloo styles!

SugaPop:

After seeing Electric Boogaloos on Soul Train on TV, Suga Pop told a friend that one day he would become an Electric Boogaloo member. Suga Pop relocated to Latin America to begin his music and dancing career, and eventually met Poppin Pete and Skeeter Rabbit when they performed at the Playboy Club. Suga Pop joined the Electric Boogaloo family and became an official member in 1997. Suga Pop is also a music producer, having produced a wide range of artists from Cypress Hill to Booya Tribe. Pop is currently in a CD studio and has plans for future releases.

Mr. Wiggles:

The last member of the Electric Boogaloos, Mr. Wiggles was originally a great pioneer of Hip-Hop. He was born and raised in the southern part of the Bronx, New York, USA, and achieved success in Hip-Hop at a very early age. The Wiggles are very powerful! He is also a member of two of the world's most famous hip hop and funk styles groups: The Electric Boogaloos and the Rock Steady Crew.