Partial Revival Research Articles

Studies on the male antifertility agent gossypol acetic acid. VII. Effect of motility stimulated factors on the revival of human spermatozoal motility after gossypol treatment in vitro.

Human spermatozoa were incubated with gossypol acetic acid (100 micrograms/1 X 10(6) spermatozoa/ml) at 37 degrees C for 30 min. The drug treatment inhibited the spermatozoal motility significantly. Washing of the spermatozoa, after gossypol treatment, did not effect their motility. A partial revival in the motility of the spermatozoa was observed when gossypol treated spermatozoa were incubated, after washing, with motility stimulating factors, e.g. theophylline, dibutyryl-cAMP and Kallikrein.

The quantum Talbot effect on a sphere

Any quantum (Schrödinger) wavefunction on a sphere is necessarily periodic in time. The corresponding statement down one dimension, for a circular line instead, is the quantum version of the ‘Talbot effect’ for a diffraction grating in paraxial optics (which is fully analogous to quantum mechanics). In the circle case the ‘revival’ of any initial wavefunction at the period, or ‘Talbot time’, is accompanied by a kind of partial revival at any rational fraction of the period, increasing in complexity for less simple fractions. In particular, any piecewise constant initial wavefunction is again piecewise constant at such times. By contrast, in the sphere case, the simplest piecewise constant wave, constant on hemispheres is shown not to retain its piecewise constancy at rational fractions of the period, but instead, rather strikingly, to develop infinities at calculable locations. The calculation requires the uniform asymptotic form of the Legendre polynomials together with the Poisson sum formula leading to Gauss sums.

Role of oil extract of garlic (Allium sativum Linn.) on intestinal transference of calcium and its possible correlation with preservation of skeletal health in an ovariectomized rat model of osteoporosis

The present study was undertaken to examine the effects of an oil extract of garlic on the in vivo intestinal transference of calcium, and also to verify its role in maintaining the bone mineral content and bone tensile strength in an ovariectomized rat model of osteoporosis. The results suggest that, in this experimental model, oil extract of garlic promotes intestinal transference of calcium by modulating the activities of both intestinal alkaline phosphatase and Ca(2+) activated ATPase. Also the observed low bone mineral content and low bone tensile strength in these rats were significantly restored by garlic oil supplementation. Further, garlic oil supplementation was able to revive partially the bilateral ovariectomy-induced decrease in the serum estrogen titer. The serum parathyroid hormone level, however, was found unaltered in these rats. The garlic oil supplemented partial recovery in serum estrogen titer in bilaterally ovariectomized rat was found to be persistently associated with enhanced calcium transference and better preservation of bone mineral content. The results of this study propose that the phytoestrogenic efficacy of an oil extract of garlic prevents ovarian hormone deficiency induced bone mineral loss possibly by promoting intestinal transference of calcium through the partial revival of the serum estrogen titer.

Single molecule fluorescence imaging of the photoinduced conversion and bleaching behavior of the fluorescent protein Kaede

Photoconversion and photobleaching behavior of the fluorescent protein Kaede immobilized in polyacrylamide gel matrix at room temperature was studied by single molecule wide-field fluorescence microscopy. Photobleaching kinetics of Kaede molecules upon excitation at 488 nm showed slight heterogeneity, suggesting the presence of different protein conformations and/or the distribution of local environments in the gel matrix. Statistical analysis of intensity trajectories of single molecules revealed four major types of fluorescence dynamics behavior upon short illumination by a violet light pulse (405 nm). In particular, two types of photoswitching behavior were observed: the green-to-red photoconversion (4% of Kaede molecules) and the photoactivation of green fluorescence without emission of red fluorescence (13%). Two other major groups show neither photoconversion nor red emission and demonstrate photoinduced partial deactivation (43%) and partial revival (30%) of green fluorescence. The significantly lower green-to-red conversion ratio as compared with bulk measurements in aqueous solution might be induced by the immobilization of the protein molecules within a polyacrylamide gel. Contrary to Ando et al. (Proc Natl Acad Sci 2002;99:12651-12656), we found a significant increase in green fluorescence emission upon illumination with 405-nm light, which is typical for GFP and related proteins.

Recovery of the fidelity amplitude for the Gaussian ensembles

Using supersymmetry techniques analytical expressions for the average of the fidelity amplitude fϵ(τ) = ⟨ψ(0)|exp(2πiHϵτ) exp(−2πiH0τ)|ψ(0)⟩ are obtained, where , and H0 and Hϵ are taken from the Gaussian unitary ensemble (GUE) or the Gaussian orthogonal ensemble (GOE), respectively. As long as the perturbation strength is small compared to the mean level spacing, a Gaussian decay of the fidelity amplitude is observed, whereas for stronger perturbations a change to a single-exponential decay takes place, in accordance with results from the literature. Close to the Heisenberg time τ = 1, however, a partial revival of the fidelity is found, which hitherto remained unnoticed. Random matrix simulations have been performed for the three Gaussian ensembles. For the case of the GOE and the GUE they are in perfect agreement with the analytical results.

Spinal Cord Injury Repair Research: A New Combination Treatment Strategy

The optimism that a cure will soon be found for paraplegia and quadriplegia is strongly founded on the series of discoveries in the last two decades which showed that adult mammalian spinal cord axons can be made to regenerate given appropriate conditions and microenvironment. But then, why no cure yet in sight? Why is the delay? Spinal cord scientists are encountering a newfound obstacle in regeneration research. While axons do regenerate up and down through a graft/transplant placed at the injury site, they fail to regenerate further on once they reach healthy cord tissue beyond the injury zone. Research from our laboratory since the 1980s found that the principal reason for this failure of long distance regeneration is that the neural circuitry these axons have to traverse through are in a well-stabilized state which is unreceptive and refractory to new growth. Successful long distance regeneration is possible only within labilized (destabilized) neural tissues. We have shown simple and reliable methods of inducing labile state in adult spinal cord neural circuitry. This is achieved by inducing polyneuronal spinal motor control in the paralyzed limb muscles. We had predicted (Krishnan, 1991, 1983) two outcomes of inductive lability in paraplegia. One is partial revival of functions in the paralyzed limbs. The second outcome addresses effective relinking of the severed cord ends. Our preliminary results from adult paraplegic frogs convince us that inductive lability in these animals is capable of generating new growth and new connections in the distal isolated cord. Locomotor rhythm and function reappeared in the hind limbs, which enabled these animals to swim and progress on surface for long periods of observation up to 120 days. Based on these results we now recommend that inductive lability should be included as an essential component in the treatment strategy for spinal cord injury repair for effective relinking of the severed cord ends.

The Partial Revival of the Quadrature Variance Product in the Dynamics of the Squeezed Vacuum Field in the Jaynes-Cummings Model

We consider the time evolution of a squeezed vacuum cavity field interacting with an initially excited two-level atom via the Jaynes-Cummings model in the Rotating Wave approximation. For large enough initial squeezing, we recognize a new partial revival phenomenon in terms of the quadrature variance product. We show the time evolution of the field quasiprobability Q-function, which provides a quadrature space picture of the partial revival phenomenon. An interpretation of the phenomenon in terms of a certain kind of first momentum of the photon distribution function is given.

National poverty and the ‘vampire state’ in Ghana: A review article

The appearance of the first two syntheses of the literature on the economic failure of ‘statist’ policies in post-colonial Ghana, to 1983, and the subsequent economic liberalization, is an opportune moment at which to consider the state of the debate about the political economy of the country since independence. This has focused on the nature of the socially optimum combination of administrative and market methods of resource allocation in this ‘test-case’ economy, and about the political conditions which largely determine the extent to which it is achieved. Explicitly or implicitly, both Frimpong-Ansah's (1991) and Rimmer's (1992) books combine the twin traditions of rational choice thought that have been dominant in recent years in the literature on African economic development, market economics and ‘new’ institutionalist political economy. The paper considers, in turn, the economics and politics of Ghana's economic decline and partial revival. It suggests that, while there is a consensus that ‘state failure’ was the main cause of Ghana's decline in relation to similarly endowed countries, 1950–83, the question of how far and in what respects the state should retreat from administrative control of resource allocation remains relatively open. For example, while the inconvertibility of the currency seems to have been irredeemably disastrous, the much criticized marketing board system may yet prove worthy of reform rather than abolition. There is also a consensus that the prolongation of what, for the economy as a whole, were disastrously counterproductive policies was to a great extent the result of the subordination of the public interest in economic growth to the sectional and personal interests of governments and their members. However, the paper argues that it is necessary to revise such explanations to take account of two surprisingly neglected points: (a) that economic growth in itself is a major political asset to governments in Africa as elsewhere and (b) that economic decline (as in Ghana 1975–83) requires more explanation than economic stagnation (as in Ghana 1950–75).

Sociology of Religion in the USSR: A Beginning?

What is the meaning of life? What is happiness? What is morality? Does Marxism-Leninism have a satisfactory answer to these everlasting questions of man? The official Soviet doctrine certainly has answers to questions such as what religion is and what its cause and function in society are. But then, why does it still exist in Soviet society, more than half a century after the Revolution-when the USSR is supposedly moving from socialism (already accomplished) to communism (to be achieved soon) ? Moreover, why does it also exist among young people? And why does it even undergo, from time to time, periods of revival? It should not be surprising, then, that the Soviets have begun a relatively widespread program of sociological surveys of religion. They have also begun to study Western thought and sociology of religion. The beginning of some kind of sociology of religion of the USSR is, of course, a part of the general development of sociology in the Soviet Union in general. And like sociology at large, it should be viewed with caution. Naturally its methods, concepts, and basic motivation are rather far from scientific objectivity. Nevertheless, for the first time, these studies provide a body of information and an insight into the state of religion which was hitherto totally unavailable. The reasons for this development may be somewhat puzzling. True, there are some signs of a partial revival of religious beliefs and of rather widespread curiosity about religious ceremonies, churches, icons, and so forth. But these do not amount to any serious threat to the party's position in power. Perhaps the following discussion will provide some clues. Since no brief review can provide a full treatment of the work in sociology of religion in the USSR, we shall examine three books, all of them collections of articles, mainly based on field studies. The one edited by A. Klibanov,

Testicular Leydig cell tumourigenesis by diethylstilbestrol in the BALB/c mouse: Histologic and histochemical study

The present study is dealing with an investigation on gross, histologic and histochemical changes in testes and adrenal cortex of BALB/c mice after subcutaneous implantation of a diethylstilbestrol pellet. The animals were serially killed 30, 60, 90, 120, 150 and 180 days after the implantation. They showed an initial marked loss of body weight, an increased testicular weight starting from the 90th day and a constant adrenal weight increase from the beginning of the experiment. Leydig cell hyperplasia was observed in the treated groups starting from the 60th day, and Leydig cell tumours from the 120th day. A marked regression of the spermatogenic elements was observed shortly after implantation; subsequently a partial revival of the seminal activity with final regression of spermiogenesis was found. The seminal vesicles-coagulating gland complex showed a persistent squamous metaplasia of the coagulation epithelium and evidence of initial atrophy of the seminal vesicles epithelium showing a functional revival in the later stages of the experiment. The histochemical study carried out on testes and adrenal cortex gave useful information on some enzyme activities connected with steroidogenesis, i.e. 3β-hydroxysteroid dehydrogenase, glucose- 6-phosphate dehydrogenase and NADPH diaphorase. The demonstration of the reported enzymes was obtained within normal, hyperplastic and tumoural Leydig tissues. A lack of enzyme activities was found in the inner zones of the adrenal cortex as well as in some Leydig cells where ceroid deposition was frequently found.

DE INDELING DER MIDDELEEUWSE WIJSBEGEERTE

SUMMARY The author rejects the principles of division as found in most of the current handbooks on the history of Mediaeval Philosophy. Starting from the arbitrary nature of such terms as 'Middle Ages', he takes the historical period for a work-economic unit and tries to find some criterion for the division of philosophic thought in the Mediaeval period by focusing on the distinction of exogenous and indigenous impulses and the variety of responses given to them during the Mediaeval period. This approach seems to lead to the following division of Mediaeval Philosophy: 1. The Early Middle Ages (till c. 1000): the period of increasing acceptance of the legacy of Late Antiquity, brought about mainly by the social need of education.2. The Mediaeval Renaissance (c. 1030-c. 1200): the period of a partial revival of Ancient thought in a form proper to the Mediaeval mind. The different responses called forth by the exogenous factors (Reform-movements. Investiture Contest), were substantially determined by the personal philosophic starting-points of the authors.3. The Period of the Universities (from c. 1200): the period in which, from the proper aims of philosophy, Mediaeval thought developed into several directions, within the frame-work of the University and its statutes and customs.

Pioneers of Russian Social Thought: Studies of Non-Marxian Formation in Nineteenth Century Russia and of Its Partial Revival in the Soviet Union.

Pioneers of Russian Social Thought: Studies of Non-Marxian Formation in Nineteenth Century Russia and of Its Partial Revival in the Soviet Union.

Pioneers of Russian Social Thought: Studies of Non-Marxian Formation in Nineteenth-century Russia and of its Partial Revival in the Soviet Union

Journal Article Pioneers of Russian Social Thought: Studies of Non-Marxian Formation in Nineteenth-century Russia and of its Partial Revival in the Soviet Union Get access Pioneers of Russian Social Thought: Studies of Non-Marxian Formation in Nineteenth-century Russia and of its Partial Revival in the Soviet Union. By Richard Hare. London, Oxford University Press, 1951. vi+307 pp. Illus. Index. 834′​′×512′​′⁠. 25s. Ian Grey Ian Grey Search for other works by this author on: Oxford Academic Google Scholar International Affairs, Volume 28, Issue 2, April 1952, Pages 248–249, https://doi.org/10.2307/2604110 Published: 01 April 1952

Pioneers of Russian Social Thought: Studies of Non-Marxian Formation in Nineteenth-Century Russia and of its Partial Revival in the Soviet Union. By <italic>Richard Hare</italic>. (New York: Oxford University Press. 1951. Pp. vi, 307. $4.50.)

Pioneers of Russian Social Thought: Studies of Non-Marxian Formation in Nineteenth-Century Russia and of its Partial Revival in the Soviet Union. By <italic>Richard Hare</italic>. (New York: Oxford University Press. 1951. Pp. vi, 307. $4.50.)

Pioneers of Russian Social Thought: Studies of Non-Marxian Formation in the Nineteenth-Century Russia and of Its Partial Revival in the Soviet Union

Pioneers of Russian Social Thought: Studies of Non-Marxian Formation in the Nineteenth-Century Russia and of Its Partial Revival in the Soviet Union

The Behaviour of the Robin.—Part I. The Life‐history, with special reference to Aggressive Behaviour, Sexual Behaviour, and Territory. Part II. A Partial Analysis of Aggressive and Recognitional Behaviour

The Behaviour of the Robin.—Part I. The Life‐history, with special reference to Aggressive Behaviour, Sexual Behaviour, and Territory. Part II. A Partial Analysis of Aggressive and Recognitional Behaviour