... while visiting the island of Trinidad off the coast of Venezuela, inspected the great deposit of bitumen there The following is taken from The Discoveries of Guiana (1596): At this point called ... properties of lubricating oils are outlined inthe following sections, with brief explanations ofthe significance ofthe tests from the standpoint ofthe refiner and consumer For detailed information ... further aid inthe removal of aromatics, sulfur, and nitrogen from the lube base stocks Two ofthe hydroprocessing methods use the feedstock from the solvent refining process (hydrofinishing...
... behaviour of a system and using the behaviour ofthe same system to determine the parameters is a form of inbreeding As mentioned inthe section on the choice of mechanisms, this is no problem if the ... was put in to erecting a production plant for penicillin attached to the Institute As a result ofthe rapid increase inthe size ofthe operation, the fermentation section ofthe Institute of Microbiology ... again in Sect 4.2.3 4.1.3 Staining Another technique that has contributed to the structuring of models is the use of staining This has a very long history in microbiology, e.g the Gram stain, in...
... ring attached to a side chain of d-a-aminoadipic acid It differed, however, from the penicillins in containing a six-membered dihydrothiazine ring in place ofthe five-membered thiazolidine ring ... semisynthetic cephalosporins the most important group of antibiotics The stability ofthe cephalosporins to penicillinase is evidently a function ofthe dihydrothiazine ring since: (i) the d-a-aminoadipic ... ofthe crops Insects fight back against infecting bacteria by producing antibacterial proteins [105] These include cecropins, attacins, defensins, lysozyme, diptericins, sarcotoxins, apidaecin,...
... c a ông ta có ch a ion h p ch t Qui t c bát t Jonh Newlands, m t nhà hóa h c ng i Anh ã vi t báo n m 1863 ó phân lo i 56 nguyên t c x p vào 11 nhóm d a vào s gi ng v tính ch t v t lí c a chúng ... chúng Và ghi ng t n t i nh ng c p nguyên t t ng t nhau, nh ng ch khác tr ng l ng nguyên t theo i s N m 1864 Newlands ã cho xu t b n b ng HTTH c a nghi qui t c Octaves (B tám) (t ng t nh b y kho ng ... (1834-1907), út c a m t gia ình có 17 ng i con, sinh thành ph nh c a ToBol’sk n i cha ông ta m t th y giáo v n h c tri t h c Nga Mendeleev ã không c xem m t h c sinh n i b t nh ng n m u i h c c a ông,...
... combined other hominin characteristics with a brain of chimpanzee size.1 During the following five million years, a wide variety of other hominins, mostly known as Australopithecines, left remains ... rivalling Egypt’s and a marked continuity inthe physical composition of its people, who inherited the Nilotic culture of fishing, pottery-making, grain-collecting, and early herding ofthe high-rainfall ... 2007 15:15 The frontiersmen of mankind the liberation of their continent made the second half ofthe twentieth century a triumphant period for the peoples of Africa, but at the end ofthe century...
... Progression of Liver Fibrosis Inthe setting of persistent hepatitis C viremia, the rate of progression of liver fibrosis varies widely There have been extensive studies focusing on the natural course of ... association between the rate of fibrosis and the age at time of infection.[38, 39] After controlling for the estimated duration of HCV infection, the stage of fibrosis was significantly higher in patients ... 50 Summary The chronic nature of hepatitis C infection influences the clinical approach and management of this disease Prevention ofthe HCV infection is possible by understanding the various...
... that ofthe epicycle,[2] the distance ofthe excentric[3] from the centre ofthe deferent, and the position ofthe line of apses,[4] besides the inclination and position ofthe plane ofthe planet’s ... appointment ofthe gods They recorded these movements, but mainly inthe hope of tracing the will ofthe gods in mundane affairs Ptolemy (about 130 A.D.) made use of Babylonian eclipses inthe ... knowledge of it desirable to the extent of determining the day ofthe year or month, and the hour ofthe night, but as to learning the courses ofthe stars, to be occupied with the planets, and to inquire...
... soldiers with the coin they bring, And chase the Prince of Parma from our land, And reign sole king of all the[ 28] provinces; Yea, stranger engines for the brunt of war, Than was the fiery keel ... History of Doctor Faustus Enter CHORUS CHORUS Not marching now in fields of Thrasymene, Where Mars did mate[1] the Carthaginians; Nor sporting inthe dalliance of love, In courts of kings where ... The spirits tell me they can dry the sea, And fetch the treasure of all foreign wrecks, Ay, all the wealth that our forefathers hid Within the massy entrails ofthe earth: Then tell me, Faustus,...
... system (ABS), theanalysisofthe writing style in Shakespeare's work with the goal of proving whether a single individual really was responsible for all these pieces By the end ofthe 1950's computers ... reference Because ofthe connection to the Jacquard loom, Babbage called the two main parts of his Analytic Engine the "Store" and the "Mill", as both terms are used inthe weaving industry The Store ... for 15 years, sounding like a roomful of ladies knitting To appreciate the scale of this machine note the four typewriters inthe foreground ofthe following photo SOURCE: INTERNET COLLECTION:...
... attention to the possibility of personal and social variation affecting the language ofthe texts They note the possibility that a writer of mixed upbringing may betray in his usage the influence of two ... apparent in changes inthe language system What we have to explain is how innovations initiated by speakers find their way into language systems, at which point, of course, they become linguistic ... ofthe in- coming dialect were evaluated more highly, and sociolinguists might explain this kind of pattern in terms of prestige or — preferably — in terms ofthe changing identity functions of...
... epigram The narrative flow ofthe Chaucerian couplet is halted, not only by the end-stopping ofthe couplet but by its internal balancing of line against line and half-line against half-line, often ... language Line repeats the constructional parallelism and the antithesis but adds another new element inthe form of a chiasmus, in which the second half line inverts the order of elements inthe first ... appeared rambling and shapeless And as with prose, the remedy applied was a conscious classicising ofthe inherited form Inthe case ofthe couplet, the reform began inthe last two decades ofthe sixteenth...
... all secular buildings of Angkor, these were built of perishable materials rather than of stone, so nothing remains of them except the outlines of some ofthe streets Most ofthe area is now covered ... group of ancient structures It is the southernmost of Angkor's main sites The initial design and construction ofthe temple took place inthe first half ofthe 12th century, during the reign of ... subsidiary shrines located below the corner towers The roofings ofthe galleries are decorated with the motif ofthe body of a snake ending inthe heads of lions or garudas Carved lintels and pediments...
... endings, were performed inthe morning festivals • Comedies are funny and have happy endings, were performed late inthe day 1.3.3 Philosophy • Is a Greek word meaning “love of wisdom” • Athens’ ... many building • It means “high city” • The largest building on the Acropolis was the Parthenon 1.4 .The spread of Greeks Ideas • In 404 B.C lost its power, democracy and wealth to other Greek ... 950 B.C a blind poet named Homer believed he had a special purpose • Two of Homer’s greatest epics are the Iliad and The Odyssey • Theater had its beginnings in ancient Greece, growing out important...
... an individual facing the terror of cosmic loneliness The answer ofthe historian, in so far as I am capable of giving it, will appear inthe course of this work Ever since men became capable of ... usually the creation of a slave class On the one hand the purposes ofthe community are enforced upon the individual, and, on the other hand the individual, having acquired the habit of viewing his ... and the stream Of wind in my hair? Shall our white feet gleam Inthe dim expanses? O feet ofthe fawn to the greenwood fled, Alone inthe grass and the loveliness; Leap ofthe hunted, no more in...
... divine The long bondage ofthe spirit, the distrustful constraint inthe communicability of ideas, the discipline which the thinker imposed on himself to think in accordance with the rules of ... retrogression, and turning thereof, is attributable to the fact that the herd-instinct of obedience is transmitted best, and at the cost ofthe art of command If one imagine this instinct increasing to its ... is the instinct ofthe herding human animal, the instinct which has come and is ever coming more and more to the front, to preponderance and supremacy over other instincts, according to the increasing...
... though the concept of metabolic engineering was not new, the work in this area took off and expanded greatly inthe 1990s With the tools of DNA recombinant technology and protein engineering well in ... advance inthe history of biochemical engineering The interests in conversion of hydrocarbons into SCP quickly disappeared after the oil embargo in 1974 Soon afterwards, with the advances made in ... started inthe late 1970s and was metabolic engineering in nature long before the phrase, “metabolic engineering,” was coined inthe early 1990s There were several parallel attempts worldwide in searching...
... behaviour of a system and using the behaviour ofthe same system to determine the parameters is a form of inbreeding As mentioned inthe section on the choice of mechanisms, this is no problem if the ... was put in to erecting a production plant for penicillin attached to the Institute As a result ofthe rapid increase inthe size ofthe operation, the fermentation section ofthe Institute of Microbiology ... again in Sect 4.2.3 4.1.3 Staining Another technique that has contributed to the structuring of models is the use of staining This has a very long history in microbiology, e.g the Gram stain, in...
... Polytechnic Institute inthe schedule ofthe school of special technical chemistry in 1816 Beginning with the work of Louis Pasteur, who established the scientific essence of these trades by studying ... one ofthe first challenges was the fight against poliomyelitis Having this in mind, a new production facility was founded inthe basement of an institute ofthe Vienna University, the ‘Institute ... [25]) In contrast, the story ofthe discovery ofthe first acid-stable, oral penicillin is less well known – in some ofthe various sources it is even neglected One ofthe few disadvantages of the...
... measuring of metabolic indices and ofthe involved substrates, intermediate and end products was introduced The history ofthe advent of computers in biotechnology is the subject of a stimulating ... (ETHZ) The Federal Institute of Technology (ETH) in Zurich was the obvious site for the creation of a discipline combining biology and engineering The conditions were favourable, since biology inthe ... according to the availability of carbon and energy sources for the formation ofthe main product according to Gaden Further, he explained the state ofthe art in research on oxygen transport in...