Supply Chain

Notes

Abu Bakar Muhammad bin Zakaria al-Razi محمد زکریای رازی

Abū Bakr Muhammad ibn Zakarīya al-Rāzi (Persian: زكريای رازی Zakaria ye Razi; Arabic: ابو بکر محمد بن زكريا الرازی; Turkish: El-Râzi; Latin: Rhazes or Rasis). According to al-Biruni he was born in Rayy, Iran in the year 865 AD (251 AH), and died there in 925 AD (313 AH).

Razi was a versatile Persian physician, philosopher, and scholar who made fundamental and enduring contributions to the fields of medicine, alchemy, and philosophy, recorded in over 184 books and articles in various fields of science. He was well versed in Greek medical knowledge and added substantially to it from his own observations. As an alchemist, Razi is credited with the discovery of sulfuric acid, the "work horse" of modern chemistry and chemical engineering. He also discovered ethanol and its refinement and use in medicine. He was unquestionably one of the greatest thinkers of the Islamic World, and had an enormous influence on European science and medicine.

Razi was a pure rationalist, extremely confident of the power of reason; he was widely regarded by his contemporaries and biographers as liberal and free from any kind of prejudice, very bold and daring in expressing his ideas without a qualm. He believed in man, progress and in "God the Wise".

He traveled in many lands and rendered service to several princes and rulers especially to Baghdad where he had his lab. As a teacher in Medicine he attracted a great amount of students of all disciplines and was said to be compassionate, kind, upright, and devoted to the service of his patients, whether rich or poor.

The modern-day Razi Institute in Tehran, and Razi University in Kermanshah were named after him, and 'Razi Day' ('Pharmacy Day') is commemorated in Iran every August 27.

Salahuddin Ayyubi صلاح الدين يوسف بن ايوب

Saladin or Salah al-Din was a twelfth century Kurdish Muslim warrior from Tikrit, in present day northern Iraq. He founded the Ayyubid dynasty of Egypt, Syria, Yemen, Iraq, Mecca Hejaz and Diyar Bakr. Saladin is renowned in both the Muslim and Christian worlds for leadership and military prowess tempered by his chivalry and merciful nature, during his war against the Crusaders. Salah ad-Din is an honorific title which translates to The Righteousness of the Faith from Arabic

Abu Abdullah Muhammad Ibn Batuta أبو عبد الله محمد ابن بطوطة

Abu Abdullah Muhammad Ibn Batuta (Arabic: أبو عبد الله محمد ابن بطوطة) (born February 24, 1304; year of death uncertain, possibly 1368 or 1377) was a Moroccan Berber Sunni Islamic scholar and jurisprudent from the Maliki Madhhab (a school of Fiqh, or Sunni Islamic law), and at times a Qadi or judge. However, he is best known as an extensive traveller or explorer, whose account documents his travels and side-excursions over a period of almost thirty years, covering some 73,000 miles (117,000 km). These journeys covered almost the entirety of the known Islamic world, extending also to present-day India, the Maldives, Sri Lanka, Southeast Asia and China, a distance readily surpassing that of his predecessor, near-contemporary and traveller Marco Polo.

At the instigation of the Sultan of Morocco, Abu Inan Faris, several years after his return, Ibn Battuta dictated an account of his journeys to a scholar named Ibn Juzayy, whom he had met while in Granada. This account, recorded by Ibn Juzayy and interspersed with the latter's own comments, is the primary source of information for his adventures. The title of this initial manuscript may be translated as A Gift to Those Who Contemplate the Wonders of Cities and the Marvels of Travelling, but is often simply referred to as the Rihla, or "Journey". Whilst apparently fictional in places, the Rihla still gives as complete an account as exists of some parts of the world in the 14th century.

Almost all that is known about Ibn Battuta's life comes from one source – Ibn Battuta himself (via Ibn Juzayy). In places the things he claims he saw or did are probably fanciful, but in many others there is no way to know whether he is reporting or story-telling. The following account assumes the latter where it is not obviously the former.

Who discovered zero?

976 CE, 365 A.H Muhammad bin Ahmad introduces the number Zero.

Muhammad ibn Musa al-Khwarizmi محمد بن موسى الخوارزمي

His major contributions to Islamic mathematics, astronomy, astrology, geography and cartography provided foundations for later and even more widespread innovation in algebra, trigonometry, and his other areas of interest. His systematic and logical approach to solving linear and quadratic equations gave shape to the discipline of algebra, a word that is derived from the name of his 830 book on the subject, al-Kitab al-mukhtasar fi hisab al-jabr wa'l-muqabala (الكتاب المختصر في حساب الجبر والمقابلة) or: "The Compendious Book on Calculation by Completion and Balancing". The book was first translated into Latin in the twelfth century.

His book On the Calculation with Hindu Numerals written about 825, was principally responsible for the diffusion of the Indian system of numeration in the Middle-East and then Europe. This book also translated into Latin in the twelfth century, as Algoritmi de numero Indorum. From the name of the author, rendered in Latin as algoritmi, originated the term algorithm.

Some of his contributions were based on earlier Persian and Babylonian Astronomy, Indian numbers, and Greek sources.

Al-Khwārizmī systematized and corrected Ptolemy's data in geography as regards to Africa and the Middle east. Another major book was his Kitab surat al-ard ("The Image of the Earth"; translated as Geography), which presented the coordinates of localities in the known world based, ultimately, on those in the Geography of Ptolemy but with improved values for the length of the Mediterranean Sea and the location of cities in Asia and Africa.

He also assisted in the construction of a world map for the caliph al-Ma'mun and participated in a project to determine the circumference of the Earth, supervising the work of 70 geographers to create the map of the then "known world".[2]

When his work was copied and transferred to Europe through Latin translations, it had a profound impact on the advancement of basic mathematics in Europe. He also wrote on mechanical devices like the astrolabe and sundial.

Ernesto Guevara de la Serna

Ernesto Guevara de la Serna (June 14, 1928 – October 9, 1967), commonly known as Che Guevara or el Che, was an Argentine-born Marxist revolutionary, political figure, and leader of Cuban and internationalist guerrillas. As a young man studying medicine, Guevara traveled rough throughout Latin America, bringing him into direct contact with the impoverished conditions in which many people lived. Through these experiences he became convinced that only revolution could remedy the region's economic inequality, leading him to study Marxism and become involved in Guatemala's social revolution under President Jacobo Arbenz Guzmán.

Some time later, Guevara joined Fidel Castro's paramilitary 26th of July Movement, which seized power in Cuba in 1959. After serving in various important posts in the new government and writing a number of articles and books on the theory and practice of guerrilla warfare, Guevara left Cuba in 1965 with the intention of fomenting revolutions first in Congo-Kinshasa, and then in Bolivia, where he was captured in a CIA/ U.S. Army Special Forces-organized military operation.[1] Guevara was summarily executed by the Bolivian Army in La Higuera near Vallegrande on October 9, 1967.[2][3]

After his death, Guevara became an icon of socialist revolutionary movements worldwide. An Alberto Korda photo of Guevara (shown) has received wide distribution and modification. The Maryland Institute College of Art called this picture "the most famous photograph in the world and a symbol of the 20th century."[4]

A Revolution

A revolution is a drastic change that usually occurs in a relatively short period of time. Variously defined revolutions have been happening throughout human history. They vary in terms of numbers of their participants (revolutionaries), means employed by them, duration, ideology and many other aspects. They may result in a socio-political change in the socio-political institutions, or a major change in a culture or economy.

Orange Revolution

Ukraine's "Orange Revolution" (Ukrainian: Помаранчева революція) of 2004-2005 was a series of protests and political events that took place throughout the country in response to allegations of massive corruption, voter intimidation and direct electoral fraud during the 2004 Ukrainian presidential election.

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