Review of books. Organ Technique: Modern and Early. GH Ritchie, GB Stauffer

2001 ◽  
Vol 82 (3) ◽  
pp. 449-452
Author(s):  
L Archbold
Keyword(s):  
2021 ◽  
Author(s):  
Néstor J. Martínez‐Hernández ◽  
Ana Díaz‐Cuevas ◽  
Lara Milián‐Medina ◽  
María Sancho‐Tello ◽  
Joan Roselló‐Ferrando ◽  
...  
Keyword(s):  

1970 ◽  
Vol 39 (3) ◽  
pp. 349-365 ◽  
Author(s):  
H. E. Berry ◽  
J. G. Collier ◽  
J. R. Vane

1. Circulating kinins were detected and continuously assayed during hypotension due to haemorrhage in dogs, using the blood-bathed organ technique and isolated strips of cat jejunum as the assay tissue. 2. In arterial blood kinin concentrations of 1–5 ng/ml were attained after a hypotension of 35–65 mmHg had been maintained for 10–190 min. When portal venous blood was simultaneously assayed kinins appeared earlier and in concentrations 1–2 ng/ml higher than in arterial blood. No differences in time course of kinin generation or in concentration were found when mixed venous blood and arterial blood were compared. In those instances in which the blood pressure was restored to normal by returning the shed blood, kinin formation stopped. 3. Kinin generation was due to the presence in the circulation of a kinin-forming enzyme, such as kallikrein. When kallikrein was infused into the portal vein, it was partially inactivated by the liver. 4. Prolonged intravenous infusions of kallikrein (20–60 mu kg−1 min−1) generated kinins in the circulation in concentrations (1–5 ng/ml) which were well maintained throughout the infusion, demonstrating that kinin generation is not limited by depletion of the precursor kininogen; nevertheless, the effects of kallikrein infusions on the blood pressure and central venous pressure waned. 5. It is concluded that in hypotension due to haemorrhage, an active kallikrein appears in the portal circulation. Delay in the appearance of kallikrein in the systemic circulation may be due to the kallikrein inactivating mechanism of the liver. This inactivating mechanism may fail during shock. Kinins are generated in amounts sufficient to have a substantial effect on the circulation and an influence on the course of events in shock.


1976 ◽  
Vol 51 (s3) ◽  
pp. 451s-454s
Author(s):  
K. K. F. Ng ◽  
S. Duffy ◽  
W. J. Louis ◽  
A. E. Doyle

1. The blood-bathed organ technique was employed to study the effects of angiotensin II and catecholamines on an isolated everted rat aorta bathed in the extracorporeal circulating blood of adult dogs and cats. 2. When the injections were made into the bathing blood close to the everted rat aorta, angiotensin II was half as potent as adrenaline or noradrenaline on a molar basis. 3. After intravenous injections, the vasoconstrictor potency of angiotensin was twenty times that of adrenaline or noradrenaline on the everted rat aorta. The increase in potency was due to the interaction of angiotensin II with catecholamines on the preparation. 4. Intravenous phenoxybenzamine abolished the potentiated vasoconstrictor effect of angiotensin II on the blood-bathed everted rat aorta, but it did not abolish the pressor effect of angiotensin II on the cardiovascular system of the animals. The results suggest that catecholamines released into the circulating blood by intravenous angiotensin II do not play an important role in the pressor effect of angiotensin II.


10.31022/n018 ◽  
1994 ◽  
Author(s):  
Charles-Marie Widor

Charles-Marie Widor continued to develop the genre of the organ symphony in his second set of four works, published as Symphonies pour orgue, opus 42 (1878–87). The introduction to this edition of Widor's Symphonie VIII includes a list of the sources, a statement of editorial policies, and information about Widor's registrations. Symphonie VIII in B Major, in six movements, is a monumental work with a performance time of about an hour. In this symphony, which at the time of composition Widor considered to be his last, he pushed organ technique to the limit and exhausted the tonal possibilities of the instrument. Also included in this edition are four appendices containing selected principal variants, with the original Prélude movement that was removed from the symphony for unknown reasons.


1988 ◽  
Vol 254 (1) ◽  
pp. R109-R116 ◽  
Author(s):  
M. Horowitz ◽  
S. Samueloff

The effect of thermal dehydration (37 degrees C) on the integrated response of the circulation was studied in conscious laboratory rats and in the desert species Psammomys obesus, the latter being studied prior to and following acclimation to heat. Cardiac output (CO) and its distribution were measured using labeled microspheres with the reference organ technique. At low dehydration (7-9% body wt loss) rats showed peripheral vasodilation coincidentally with splanchnic vasoconstriction, whereas the desert species exhibited an increased CO and peripheral vasodilation with no change in splanchnic blood perfusion. At severe dehydration (10-18% body wt loss), closure of skin arteriovenous anastomoses together with splanchnic vasodilation was observed in both species. These changes were discussed in relation to plasma volume conservation mechanism and its deterioration. Acclimation to heat resulted in no change in CO, whereas blood flow to splanchnic and skin capillaries increased remarkably. Dehydration in heat-acclimated P. obesus (5-10% body wt loss) brought about a significant fall in CO. However, most organs maintained relatively stable blood flow. This might contribute to better survival during heat stress.


1976 ◽  
Vol 51 (s3) ◽  
pp. 165s-168s
Author(s):  
G. J. Dusting ◽  
Janina Staszewska-Barczak

1. The blood-bathed organ technique was used to study the release of catecholamines, angiotensin II and prostaglandin-like (PL) substances into the circulation during hypercapnia and after haemorrhage in anaesthetized dogs. 2. Elevated blood concentrations of noradrenaline, angiotensin II and prostaglandin-like substances have been detected during both experimental conditions. 3. The rise of arterial blood pressure during hypercapnia and after haemorrhage was associated with elevated concentrations of angiotensin II in the blood and could be abolished by inhibition of the angiotensin I-converting enzyme with SQ 20881. 4. The compensation of arterial pressure during both stresses was significantly impaired by release of prostaglandin-like substances; it could be restored by inhibition of prostaglandin biosynthesis with indomethacin. 5. The results indicate that activation of the renin—angiotensin system represents the major humoral mechanism for the maintenance of arterial pressure during hypercapnic acidosis and after haemorrhage.


1942 ◽  
Author(s):  
◽  
William Charles Bedford

Louis Vierne stood in an exceedingly favorable position in the matter of the influences which were at work upon him. Though he profited immeasurably by his study with both Widor and Guilmant, he himself possessed an advantage which was not given to either of these two men. For almost two years Vierne was in the organ-class of César Franck; and in that time he was able to add his own share to the almost legendary love, respect, and admiration that Franck's students bore him. There are, in fact, many points of similarity between the careers of Franck and of Vierne. Each spent a goodly portion of his life in the service of the church: Franck at Ste. Clothilde, Vierne at Notre-Dame. Each man devoted his entire life to music; each was a devout believer with a keen sense for beauty and the creation of it; both were superb improvisers; the students of both were avid disciples of their masters; both suffered the results of intrigue at the hands of others, and both had the necessary fortitude to rise above their troubles, taking refuge in their art. As the assistant and close friend of both Wider and Guilmant, Vierne came to know the esthetic creed of each artist in an intimate fashion. Vierne modeled his own compositions upon the general lines of the work of these two men. With the added impetus and the inspiration that came to him through his contact with Franck, be was able to advance in scope, in grandeur, and in emotional content to that point which places his works in the forefront of modern organ composition. Vierne was perhaps more fortunate than bis contemporaries, for he was able to profit greatly by bis association both with Franck and with Wider and Guilmant. His greater point of advantage lay in the fact that he was in such close personal relationship with the latter two men. Vierne had the inestimable advantage of an ability to produce a long melodic line, the intensity of which he was able to modify at will. The short-breathed phrases of Franck do not appear in the work of his student. Vierne used a widely-varied phraseology. In countless movements the phrase organization is quite regular, with perfect balance of periods. In other instances, there are phrases of all degrees of length and of very odd balance. He possessed a fine ability for the building of tremendous climaxes. In this connection must be mentioned his use of chain-phrases and his intriguing manner of extending phrases so that the moment of cadence of resolution is delayed, to the end that climaxes seem more impressive by reason of their delayed entrances. One device in particular contributes to his ability for constructing a stunning climax. The ostinato, the effectiveness of which he may have learned from Widor's use of it in the Toccata of the Fifth Symphony, is used with carillon-like results in many movements in which the effect is gained almost by monotony--much in the manner of Ravel's Bolero. It is true that Vierne exhausted nearly all of the contrapuntal and harmonic devices in the course of writing his symphonies. It is possible that many of these tricks of the musician's trade will remain to be appreciated only by those who have the knowledge and the will to examine the scores themselves. Vierne's use of cyclic construction seems for the most part to be valuable in its strictest sense only to the practiced organist. The paces of the movements where there is identity of thematic material are usually too slow or too rapid to afford the unaided ear any opportunity of grasping the essential cyclic meaning. It remains for the eye to appreciate the tremendously skilful manipulation of the themes. There seems to be no excellence of one type of writing over another in Vierne's work, unless it be in his writing of scherzi. Some of the most charming pages) of the symphonies are to be found in these swift, light-footed movements. The grandeur of some of the dramatic passages is notable. Especially to be commended is the jagged, Gothiclike beginning of the Second Symphony, and the final summing up of the themes which occurs at the end of the first movement. The succeeding Choral and the Romance of the Fourth Symphony contain passages of lyrical loveliness. The training of Franck appears nowhere more noticeably than in the Fourth Symphony with its extreme chromatic style, unless it be in the last two symphonies with their cyclical structure. To Widor's influence can be credited the use of the symphonic form itself, as well as the tremendously difficult passages with which some of the symphonies are filled. It is possible that these bristling technical difficulties would never have been written had it not been for the thorough schooling in organ technique that Vierne received at the hands of Widor. The purist may be comforted by the fact that Vierne’s symphonic writing comes closer to the classical ideal than does that of Widor. The variety and unity achieved by Vierne in the symphonies is not far removed from that demanded by the thorough-going classicist. Vierne has truly built upon the foundation provided by the Widor symphonies, and his own personal manner of expression has given his work an individuality and a breadth of vision that are lacking in the Widor works. The organ symphonies of Louis Vierne represent a substantial and valuable contribution to modern organ literature because of their own intrinsic value; because they are the well-considered works of one of the preeminent members of the modern French organ school, and because they represent the vision and the work of an organist directly descended through one of the finest lines of schooling. As for their permanence in the repertoire, it remains for time and for capable organists to say.--Conclusion.


Bach ◽  
2020 ◽  
pp. 43-72
Author(s):  
David Schulenberg

Bach’s duties as a Lutheran church organist included “preluding” on chorale (hymn) melodies and maintaining instruments. At Arnstadt Bach must also have been expected to accompany singers both at court and in church, and during these years he also carried out organ “tests.” It is unknown whether he wrote any vocal compositions at Arnstadt, but he doubtless wrote much keyboard music and developed his organ technique during these years. Compositions examined in this chapter include chorale preludes and praeludia (preludes and fugues), as well as the great Passacaglia for organ and several vocal works (cantatas) probably performed at Mühlhausen, including the so-called Actus tragicus.


Author(s):  
George B. Stauffer

This chapter examines various independent trio movements that Johann Sebastian Bach either composed or transcribed, probably prior to the composition of the Six Sonatas for organ. The Six Trio Sonatas for Organ, BWV 525–530, were assembled for the use of Bach’s oldest son, ilhelm Friedemann, to give final polish to his organ technique. This chapter first describes the Six Trio Sonatas before discussing Bach’s miscellaneous free organ trios in more detail. It then considers Bach’s Leipzig workshop and suggests that the miscellaneous organ trios and Six Sonata variants represent a unified repertory arising from a single period of activity in Leipzig: 1725 to 1730 or so. Aside from serving as preparatory exercises for the Six Sonatas, the organ trios were used as display pieces for demonstrating the chamber music registers of the progressive Central German organ, as well as a teaching material for students like Johann Tobias Krebs and Gottfried August Homilius.


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