scholarly journals Spatial Relationship Between the Metanephros and Adjacent Organs According to the Carnegie Stage of Development

2019 ◽  
Vol 302 (11) ◽  
pp. 1901-1915 ◽  
Author(s):  
Hana Ishiyama ◽  
Aoi Ishikawa ◽  
Hirohiko Imai ◽  
Tetsuya Matsuda ◽  
Akio Yoneyama ◽  
...  
Author(s):  
Ruth V.W. Dimlich

Mast cells in the dura mater of the rat may play a role in cerebral pathologies including neurogenic inflammation (vasodilation; plasma extravasation) and headache pain . As has been suggested for other tissues, dural mast cells may exhibit a close spatial relationship to nerves. There has been no detailed ultrastructural description of mast cells in this tissue; therefore, the goals of this study were to provide this analysis and to determine the spatial relationship of mast cells to nerves and other components of the dura mater in the rat.Four adult anesthetized male Wistar rats (290-400 g) were fixed by perfusion through the heart with 2% glutaraldehyde and 2.8% paraformaldehyde in a potassium phosphate buffer (pH 7.4) for 30 min. The head of each rat was removed and stored in fixative for a minimum of 24 h at which time the dural coverings were removed and dissected into samples that included the middle meningeal vasculature. Samples were routinely processed and flat embedded in LX 112. Thick (1 um) sections from a minimum of 3 blocks per rat were stained with toluidine blue (0.5% aqueous).


1971 ◽  
Vol 25 (03) ◽  
pp. 469-480 ◽  
Author(s):  
B Åstedt ◽  
M Pandolfi

SummaryThe ontogenesis of tissue plasminogen activator in various tissues was studied in 10 embryos and 58 foetuses with a histochemical method.The first appearance of activator activity was seen in a 4-weeks old embryo. At 8-9 weeks it was seen in the eye, meninges, heart, lungs, kidney and vena cava. In the foetal heart high activity was found in the coronary vessels, which can be regarded as the vasa vasorum of the heart. In the lungs a moderate activity increased at 24 weeks of age, when vascularisation increases more rapidly. Intense activity was seen in the highly vascularized corneoscleral junction of the eye later involved in the drainage of aqueous humor.In the kidney the activity could be related to the vessels, while no activity was seen in the glomeruli, the collecting system or the pelvis. In the vessels the activator activity was fairly high. No activity was seen in any stage of development of the liver.The plasminogen activator activity may be of importance for maintaining the foetomaternal circulation and micro-circulation in rapidly growing foetal organs. In the embryo the enzyme pattern is dominated by protein synthetizing enzymes. During foetal development the enzyme pattern changes owing to supervention of enzymes necessary for the function of the various organs. Plasminogen activator belongs to this latter group. The appearance of plasminogen activator activity may therefore be regarded mainly as a sign of functional maturity of the foetal organs.


2008 ◽  
pp. 70-83 ◽  
Author(s):  
E. Bukhvald

Transformations in the sphere of federal relations concern the most important directions of the reforming processes in the country. However, not all proposed and actually developing components of the federal reform seem well-argued and corresponding to long-term, strategic interests of the Russian statehood. The basic course of reform should meet the objective requirements of further decentralization of governing economic and social processes and the need to ensure strengthening the responsibility of RF subjects’ executive bodies and local self-management for steady social and economic development of their territories. The solution of these problems calls for a new model of federal policy of regional development, specification of some important components of the municipal reform as well as inserting certain amendments into the system of intergovernmental fiscal relations in order to stir up their stimulating function.


2018 ◽  
pp. 142-158 ◽  
Author(s):  
E. F. Baranov ◽  
V. A. Bessonov

The transition of the Russian economy from plan to market is considered at a qualitative level. The analysis of economic dynamics in the transformation paradigm is conducted. The main stages of the transition process are discussed. Bonuses and costs due to the transition to market economy are considered. The reasons for the outstripping growth of well-being as compared to the growth of output are discussed. The signs of exhaustion of the potential of factors ensuring an abnormally high rate of recovery and accompanying welfare growth are discussed. The conclusion is made that the transformational recovery has been completed. The Russian economy has moved to the stage of development with relatively low growth rates of output and welfare, typical for stable (nontransition) economies.


2009 ◽  
pp. 75-84
Author(s):  
V. Popov

Why have many transition economies succeeded by pursuing policies which are so different from the radical economic liberalization (shock therapy) that is normally credited for the economic success of countries of Central Europe? First, optimal policies are context dependent, they are specific for each stage of development and what worked in Slovenia cannot be expected to work in Mongolia. Second, even for the countries with the same level of development reforms that are necessary to stimulate growth are different; they depend on the previous history and on the path chosen. The reduction of government expenditure as a share of GDP did not undermine significantly the institutional capacity of the state in China, but in Russia and other CIS countries it turned out to be ruinous. The art of the policymaker is to create markets without causing government failure, as happened in many CIS countries.


2019 ◽  
pp. 47-71
Author(s):  
Petr M. Mozias

China’s Belt and Road Initiative could be treated ambiguously. On the one hand, it is intended to transform the newly acquired economic potential of that country into its higher status in the world. China invites a lot of nations to build up gigantic transit corridors by joint efforts, and doing so it applies productively its capital and technologies. International transactions in RMB are also being expanded. But, on the other hand, the Belt and Road Initiative is also a necessity for China to cope with some evident problems of its current stage of development, such as industrial overcapacity, overdependence on imports of raw materials from a narrow circle of countries, and a subordinate status in global value chains. For Russia participation in the Belt and Road Initiative may be fruitful, since the very character of that project provides us with a space to manoeuvre. By now, Russian exports to China consist primarily of fuels and other commodities. More active industrial policy is needed to correct this situation . A flexible framework of the Belt and Road Initiative is more suitable for this objective to be achieved, rather than traditional forms of regional integration, such as a free trade zone.


Author(s):  
Menghan TAO ◽  
Ning XIAO ◽  
Xingfu ZHAO ◽  
Wenbin LIU

New energy vehicles(NEV) as a new thing for sustainable development, in China, on the one hand has faced the rapid expansion of the market; the other hand, for the new NEV users, the current NEVs cannot keep up with the degree of innovation. This paper demonstrates the reasons for the existence of this systematic challenge, and puts forward the method of UX research which is different from the traditional petrol vehicles research in the early stage of development, which studies from the user's essence level, to form the innovative product programs which meet the needs of users and being real attractive.


The issues of determining the estimated cost of capital construction projects with the involvement of Federal budget funds at the stage of development of project documentation, during verification of the accuracy of determining the estimated cost and the initial (maximum) contract price are considered. On the basis of the assessment of amendments to urban planning legislation for the purpose of implementing a state contract by the contractor ( based on the results of competitive procedures or without competitive procedures by decision of state authorities), the procedure for forming the estimate as part of a state (municipal) contract, the price of which is firm, is presented. For the purpose of mutual settlements between the customer and the contractor for the work performed, the formation of primary accounting documentation, as well as for checking the work performed by regulatory authorities, an example of drawing up an estimate of the state (municipal) contract on the basis of grouping costs according to structural elements and complexes of work is given. The result of the research conducted was the development of regulations and the formation of criteria for their practical application by state bodies, institutions, organizations and other participants in the investment-construction process, as well as recipients of budget funds, who perform the functions of the state (municipal) customer, developer and technical customer.


1998 ◽  
Vol 10 (1-3) ◽  
pp. 100-108 ◽  
Author(s):  
Alicia Colson ◽  
Ross Parry

This article argues that the analysis of a threedimensional image demanded a three-dimensional approach. The authors realise that discussions of images and image processing inveterately conceptualise representation as being flat, static, and finite. The authors recognise the need for a fresh acuteness to three-dimensionality as a meaningful – although problematic – element of visual sources. Two dramatically different examples are used to expose the shortcomings of an ingrained two-dimensional approach and to facilitate a demonstration of how modern (digital) techniques could sanction new historical/anthropological perspectives on subjects that have become all too familiar. Each example could not be more different in their temporal and geographical location, their cultural resonance, and their historiography. However, in both these visual spectacles meaning is polysemic. It is dependent upon the viewer's spatial relationship to the artifice as well as the spirito-intellectual viewer within the community. The authors postulate that the multi- faceted and multi-layered arrangement of meaning in a complex image could be assessed by working beyond the limitations of the two-dimensional methodological paradigm and by using methods and media that accommodated this type of interconnectivity and representation.


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