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CALLIGRAPHY,calligraphy in istanbul,calligraphy in turkey,istanbul in calligraphy,Turkish - Ottoman Calligraphy Lessons in Istanbul. Ottoman - Turkish Calligraphy, also known as Arabic calligraphy, is the art of writing, and by extension, of bookmaking. Ottoman Turkish calligraphy is associated with geometric Islamic art on the walls and ceilings of mosques as well as on the page. The traditional instrument of the Turkish - Ottoman calligrapher is the kalem, a pen made of dried reed or bamboo; the ink is often in color, and chosen such that its intensity can vary greatly, so that the greater strokes of the compositions can be very dynamic in their effect. At different periods, depending on the centre of calligraphy at the time, the Arabic script was known variously as anbari, hiri and mekki in pre-Islamic times, and after the Hegira these were qualified by the term medeni.
The first of those to gain popularity was known as the Kufic script, which was angular, made of square and short horizontal strokes, long verticals, and bold, compact circles.
The Diwani script is a cursive style of Arabic calligraphy developed during the reign of the early Ottomans (16th and early 17th centuries). In the teachings of calligraphy figurative imagery is used to help visualize the shape of letters to trace. The Koran, which was the first Islamic text compiled in book form, was first written in mekki-medeni hand in black ink on parchment, without diacritics or vowel signs. In Persia and further east, meanwhile, kufi was transformed into a script known as mesrik kufisi, which was used until superseded by the aklam-i sitte scripts. Contemporary artists in the Islamic world draw on the heritage of calligraphy to use calligraphic inscriptions or abstractions in their work. It was invented by Housam Roumi and reached its height of popularity under Suleyman I the Magnificent. Calligraphy is especially revered among Islamic arts since it was the primary means for the preservation of the Qur'an. The large scale form of kufi known as iri kufi, which was mainly used on monuments, was reserved for decorative purposes in combination with some elements of embellishment. As decorative as it was communicative, Diwani was distinguished by the complexity of the line within the letter and the close juxtaposition of the letters within the word. As decorative as it was communicative, Diwani was distinguished by the complexity of the line within the letter and the close juxtaposition of the letters within the word.In the teachings of calligraphy figurative imagery is used to help visualize the shape of letters to trace. In time this style of writing divided into two forms; the sharply angled form being reserved for Korans and important correspondence.
The form of mensub hatti known as verraki mentioned above, which was generally reserved for copying books and therefore known as neshi (a derivation of the verb istinsah, "to copy"), was the prototype for the muhakkak, reyhani and nesih scripts which emerged in the early eleventh century. Since this was most often used in the city of Kufa, it became known as kufi.The other form, which did not have sharp angles and could be written at far greater speeds, was employed in day-to-day uses, and due to its rounded, flexible character was suited to artistic application.
The oocyte is received by the nearby Fallopian funnel and sent into the Fallopian tube by movements of fimbriae and their cilia. Turkish paintings, calligraphy, photography, music.When we speak of Turkish calligraphy, we refer to writing of aesthetic value in characters based on the Arabic script, which the Turks had adopted as their writing medium after their conversion to Islam. The secondary oocyte can be fertilized only within 24 hours after its release from the ovary.The secondary oocyte is surrounded by numerous sperms but only one sperm succeeds in fertilizing the oocyte.
The Arabic characters gradually assumed an aesthetic function after the advent of Islam, and this process gathered momentum from the mid-eighth century onwards, so that calligraphy was already a significant art discipline by the time the Turks joined the Islamic world.

It was this form which began to give rise to new scripts after the development of pens with nibs of different widths in the eighth century. Since the second meiotic division is in progress, so the sperm enters the secondary oocyte.
Therefore it is necessary to begin with a brief review of the structure of Arabic characters and their development during the early centuries of Islam. Among the earliest of these were the celil reserved for large scale lettering, and tomar or tumar which was the standard large size pen used in official correspondence. The most succinct definition of calligraphy formulated by Islamic writers is, "Calligraphy is a spiritual geometry produced with material tools." The aesthetic values implied by this definition held true for centuries.
Pens with a nib width two thirds of that of the tomar pen were known as suluseyn, and those with nibs one third in width were known as sulus.
Under this writing system most of the letters underwent a change of form according to whether they were positioned at the beginning, middle or end of a word. These secretions of the female genital tract remove coating substances deposited on the surface of the sperms particularly those on the acrosome.Thus, the receptor sites on the acrosome are exposed and sperm becomes active to penetrate the egg.
When transformed into an art the characters took on highly elaborate shapes, and the rich visual impact attained when they were joined together, and above all the fact that the same word or phrase could be written in various ways opened the door to the infinite variety and innovation which is a prerequisite of art. Other new writing styles which emerged (although all later fell into disuse) were riyasi, kalemu'n-nisf, hafifu'n-nisf and hafifu's-sulus.
The idea of cutting the nib of the reed pen at an angle instead of horizontally was his, and an innovation which contributed enormous elegance to writing.
Just as the characters could be written singly in several different ways, so there was an astonishing diversity of different scripts or "hands". As their names indicate, some of the new scripts were based on tomar and written with pens which were specific fractions (half, one third, or two thirds) of the tomar pen.
Once "the six hands" had taken their place in the art of calligraphy together with all their rules, many scripts apart from those mentioned above were abandoned, and no trace of them but their names remains today (for example, sicillat, dibac, zenbur, mufattah, harem, lului, muallak and mursel).Following the death of Yakut his conception of "the six hands" was carried by scribes who had trained under him from Baghdad to Anatolia, Egypt, Syria, Persia and Transoxania. It takes about 5 to 6 hours for capacitation.The secretions of seminal vesicles, prostate gland and bulbourethral glands (Cowper’s glands) in the semen contain nutrients which activate the sperms. The Arabic characters were adopted — primarily motivated by religious fervour by virtually all the peoples who converted to Islam, so that just a few centuries after the Hegira they had become the shared property of the entire Muslim world. In the process of scaling down, the scripts took on new characteristics of their own, while the word kalem, which referred to the writing instrument, also came to be used for the writing itself (for example, kalemu'n-nisf literally means "half pen"). New generations of calligraphers who trained in these lands dedicated themselves to the path taken by Yakut as far as their aptitude permitted. The term "Arabic calligraphy", which is appropriate with respect to the early period, broadened in scope over time to become what more accurately might be described as "Islamic calligraphy". For scripts such as kisas and muamerat, which were invented for specific uses and did not involve the proportional scaling down of the pen, the term hat was used.Under the Abbasids, learning and the arts flourished, leading to a swelling demand for books in Baghdad and other major cities. This writing system, known as nabati because it was used by the Nabat tribe in pre-Islamic times, derives from the Phoenician. To meet this demand the number of copyists known as verrak also rose, and the script which they employed in the copying of manuscripts was known as verraki, muhakkak or iraki. In the hands of the Ottoman Turks, these six scripts were poised to begin the ascent to their zenith.CALLIGRAPHY,calligraphy in istanbul,calligraphy in turkey,istanbul in calligraphy,Turkish - Ottoman Calligraphy Lessons in Istanbul.

The capacitated sperms undergo acrosomal reaction and release various chemicals contained in the acrosome.
In its early form, the script gave no clue of its future potential as such a powerfully aesthetic medium, the characters consisting of very simple shapes. From the end of the eighth century, as a result of the search for aesthetic values by calligraphers, writing forms according to specific proportions and symmetries became known as asli hat and mevzun hat. With the emergence of Islam, however, and particularly after the Hegira, the Arabic script became the literary vehicle of the last Semitic religion. One of the calligraphers who contributed to the development of writing, and the most outstanding among those of this period was Ibn Mukle (? Important sperm lysins are (i) hyaluronidase that acts on the ground substances of follicle cells, (ii) corona penetrating enzyme that dissolves corona radiata and (iii) zona lysine or acrosin that helps to digest the zona pellucida.Optimum pH, Ca++, Mg++ ions concentration and temperature are essential for acrosomal reaction. The numbers of those literate in the Arabic script multiplied rapidly, and in time it was perfected into a vehicle equipped to record the Koran, and hence the language as a whole, with precision. Vowel signs known as hareke were invented to express the short phonemes which accompanied the consonants. Lettering complying with these rules was called mensuh hatti, a term meaning "proportional writing".While these developments were taking place, kufi script was enjoying its heyday, above all for copying korans.
In the absence of Ca++, fertilization does not occur.Due to acrosomal reaction, plasma membrane of the sperm fuses with the plasma membrane of the secondary oocyte so that the sperm contents enter the oocyte. The method of determining the sound of letters which resembled one another in form, by means of disparate positioning and diacritical marks was developed. Binding of the sperm to the secondary oocyte induces depolarization of the oocyte plasma membrane. As time passed, the use of diacritics to distinguish the undotted from the dotted forms of the same letters was introduced. Both the diacritics, the vowel signs and the unmarked letter symbols took on decorative forms which played a major role in the development of writing as an art. Meanwhile, the frequently used definite article, consisting of the letters alif and lam, became a balancing element in the aesthetics of calligraphy.
The cortical granules are present beneath the plasma membrane of the secondary oocyte.These granules fuse with the plasma membrane of the oocyte and release their contents including cortical enzymes between the plasma membrane and the zona pellucida.
The distal centriole of the sperm divides and forms two centrioles to generate the mitotic spindle formation for cell division. The head of the sperm which contains the nucleus separates from the middle piece and the tail and becomes the male pronucleus.The second polar body and the sperm tail degenerate. Their nuclear membranes disin­tegrate.Mixing up of the chromosomes of a sperm and an ovum is known as karyogamy or amphimixis.
Ac­cording to this theory egg (ovum) secretes a chemical named fertilizin (composed of glycoprotein = monosac­charides + amino acids) and sperm has on its surface a protein substance called anti-fertilizing (composed of acidic amino acids).The fertilizin of an egg interacts with the anti-fertilizing of a sperm of the same species.

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