scholarly journals The influence of deluvial processes on macro- and micromorphology of ravined forest soil

2014 ◽  
Vol 15 (3-4) ◽  
pp. 74-88
Author(s):  
V. M. Yakovenko

The paper presents the results of studying the effect of deluvial processes on the formation of macro- and micromorphological properties of forest soils on the example of ravined biogeocenoses of Dnieper Prysamarya. Ravined forest biogeocenoses have a long history of development associated with the evolution of land cover in Postpleistocene epoch. One of the factors of soil formation in ravines is deluvial process as a natural phenomenon typical for the landscapes of the present steppes. Ravined forest soils in the catena in the upper reaches of the ravine Glyboky have been studied. They are situated on the upland part of the watershed-gulch landscape in 2 km tonorth of the Andreevka village Novomoskovsk district Dnepropetrovsk region. The methods of macromorphological and micromorphological study of genetic profiles of soils have been used. It is established that ravined forest ecosystems are subjected to intensive influence of deluvial processes, whereby, morphogenesis of ravined soil has a complex peculiar character, which results to theformation of specific morphological properties. It is revealed that the source rock for the forest chernozem on the slopes and formeadow-forest soils of the thalweg are loamy humus deluvial deposits, unlike the ordinary chernozem near the ravines formed on loess rocks. Modern deluvial deposits are the materialof surface horizons of chernozems adjacent to ravine territories. Ravines act as storage ofhumus material of steppe chernozem rendered by adjacent areas. The peculiarities of the morphological structure of the profiles of the soils indicate the intensity of involvement of deluvial material in the processes forest chernozem formation. The different effects of slope processes on the structure of the investigated soil catenahave been revealed. Ordinary chernozem near forest edges have signs of erosion of the surface horizons, while the forest soils of slopes and thalweg are characterized by superpower profile. It is found that the profile of the thalweg and forest soils tends to develop, increasing its power in the two lateral directions: down – thanks to the vertical flow of substances (lessivage, intensive movement of soil invertebrates, the development of the root system); up – the deposition of lessivage material. Deluvial processes connected with lessivage ones as theytransport the new mass of finely divided material into the body of forest soil.


2020 ◽  
Vol 26 (2) ◽  
Author(s):  
Taras Yamelynets ◽  
Zinoviy Pankiv ◽  
Stepan Malyk

Throughout the history of soil science development, one of the most controversial issues was the explanation of the genesis of the profile textural-differentiated soils influenced by forest vegetation and climate conditions within the Cis-Carpathian region, Ukraine. Scientists' views on the formation of the eluvial-illuvial, namely granulometric content, and profile differentiation have been and remain ambiguous due to the contradictory criteria of diagnosing the processes of eluvial soil degradation (lessivage, podzolization, eluvial-gleying process) and the almost similar results of these processes. The complexity and ambiguous interpretation of the genetic nature of the profile textural-differentiated soils of the Cis-Carpathian region necessitates the development of clear diagnostic criteria for revealing their genetic nature. The purpose of the work is to establish the diagnostic criteria of elementary soil-forming processes in profile textural-differentiated forest soils of the Cis-Carpathian region based on the analysis of data on soil properties previously collected by the authors. It has been established that in sod-podzolic soils formed under forest, the main profile-forming elementary process of soil formation is podzolization, which is characterized by the negative values of the eluvial-accumulative coefficients and the coefficient of change of the silicate part for the upper three horizons. The processes of lessivage and segregation are of little intensity in this type of soils. The main profile-forming elementary processes of soil formation in brown-podzolic soils (Neocambic Gleyic Retisols) are lessivage and inner soil argillization with little podzolization, the eluvial-gleying process and segregation effects. Keywords: forest soils, argillanes, neoplasms, ortsteins, podsolization, elementary soil-forming processes, Cis-Carpathian region



2015 ◽  
Vol 16 (3-4) ◽  
pp. 5-17
Author(s):  
V. M. Yakovenko ◽  
N. A. Bilova

The paper establishes the general features of the soil morphogenesis in ravined forests of Dnieper Prysamaria and genetic relationships of forest soils with zonal chernozem under herbaceous associations based on the detection of morphological properties that are «lithogenic», that is inherited from deluvial material and «pedogenic» features formed directly in the forest soil. The study area is located on the Dnieper Prysamaria (Dnipropetrovsk region) within the area of the steppes. The trial areas are incorporated in the upper Deep ravine, located in the upland part of watershed landscape. Catena is represented by five typical sections – between edging of the ravined forest and the field in the middle thirds of the slopes of the northern and southern exposures and in the thalweg of the ravine. Samples for meso-morphological studies were selected by genetic horizons, samples for soil horizons were selected using a soil drill. Basic morphological characteristics were determined in the laboratory (except for the hardness index). The mathematical processing of the results was carried out by methods of nonparametric statistics (method K-means). It was found that, despite the temporal and spatial disorder of deluvial material deposition processes and the differences of the water regime in the thalweg on the slopes, in the ravined biogeocenoses the forest soils are formed with common features of morphological organization of the genetic profile of the individual and morphological properties. The uniformity of the general structure is shown in a set sequence and the power of the genetic horizons, polycyclic and texture eluvial-illuvial differentiation of the genetic profile. The uniformity of the changes in the profile of the individual morphological properties is shown in the form of colour options of genetic horizons (due to humus content talus deposits), changing the particle size distribution of horizons in accordance with the general differentiation profile on eluvial and illuvial (due lessivage) part, changes in the morphology and dimensions of structural units related to changes in the structure of hardness horizons intensive leaching of carbonates from the profile of forest soils. The necessity of research processes clayization profile in situ, their role in the morphogenesis of compacted horizons are noted. There are two groups of properties that make it possible to analyze the micromorphology level communication between the soils in the catena. The first – a lithogenic conditionally or diluvial material properties, which persist for a long time in a forest soil – granulometry and less coloration horizons. The second – a pathogenic properties, sharply differing in the studied soils associated with the peculiarities of morphogenesis of a particular genetic profile and specific genetic horizon. These include the level of occurrence of carbonates in the profile and intensity of effervescence, the morphology of the structural units, the hardness of the genetic horizons, the level of spot colour. Cluster analysis identified a statistically illustrates the differences between the morphological structure of the soil catena, combining in one cluster the ravined soils on deluvial deposits under forest vegetation, and in the other – the soils on the loess under herbaceous vegetation. The contrast of differences increases down the profile.



2020 ◽  
Vol 5 (3 And 4) ◽  
pp. 155-160
Author(s):  
Mohsen Aghapoor ◽  
◽  
Babak Alijani Alijani ◽  
Mahsa Pakseresht-Mogharab ◽  
◽  
...  

Background and Importance: Spondylodiscitis is an inflammatory disease of the body of one or more vertebrae and intervertebral disc. The fungal etiology of this disease is rare, particularly in patients without immunodeficiency. Delay in diagnosis and treatment of this disease can lead to complications and even death. Case Presentation: A 63-year-old diabetic female patient, who had a history of spinal surgery and complaining radicular lumbar pain in both lower limbs with a probable diagnosis of spondylodiscitis, underwent partial L2 and complete L3 and L4 corpectomy and fusion. As a result of pathology from tissue biopsy specimen, Aspergillus fungi were observed. There was no evidence of immunodeficiency in the patient. The patient was treated with Itraconazole 100 mg twice a day for two months. Pain, neurological symptom, and laboratory tests improved. Conclusion: The debridement surgery coupled with antifungal drugs can lead to the best therapeutic results.



2018 ◽  
Vol 52 (1-4) ◽  
pp. 1-9 ◽  
Author(s):  
MT Hussan ◽  
MS Islam ◽  
J Alam

The present study was carried out to determine the morphological structure and the branches of the lumbosacral plexus in the indigenous duck (Anas platyrhynchos domesticus). Six mature indigenous ducks were used in this study. After administering an anesthetic to the birds, the body cavities were opened. The nerves of the lumbosacral plexus were dissected separately and photographed. The lumbosacral plexus consisted of lumbar and sacral plexus innervated to the hind limb. The lumbar plexus was formed by the union of three roots of spinal nerves that included last two and first sacral spinal nerve. Among three roots, second (middle) root was the highest in diameter and the last root was least in diameter. We noticed five branches of the lumbar plexus which included obturator, cutaneous femoral, saphenus, cranial coxal, and the femoral nerve. The six roots of spinal nerves, which contributed to form three trunks, formed the sacral plexus of duck. The three trunks united medial to the acetabular foramen and formed a compact, cylindrical bundle, the ischiatic nerve. The principal branches of the sacral plexus were the tibial and fibular nerves that together made up the ischiatic nerve. Other branches were the caudal coxal nerve, the caudal femoral cutaneous nerve and the muscular branches. This study was the first work on the lumbosacral plexus of duck and its results may serve as a basis for further investigation on this subject.



Somatechnics ◽  
2015 ◽  
Vol 5 (1) ◽  
pp. 88-103 ◽  
Author(s):  
Kalindi Vora

This paper provides an analysis of how cultural notions of the body and kinship conveyed through Western medical technologies and practices in Assisted Reproductive Technologies (ART) bring together India's colonial history and its economic development through outsourcing, globalisation and instrumentalised notions of the reproductive body in transnational commercial surrogacy. Essential to this industry is the concept of the disembodied uterus that has arisen in scientific and medical practice, which allows for the logic of the ‘gestational carrier’ as a functional role in ART practices, and therefore in transnational medical fertility travel to India. Highlighting the instrumentalisation of the uterus as an alienable component of a body and subject – and therefore of women's bodies in surrogacy – helps elucidate some of the material and political stakes that accompany the growth of the fertility travel industry in India, where histories of privilege and difference converge. I conclude that the metaphors we use to structure our understanding of bodies and body parts impact how we imagine appropriate roles for people and their bodies in ways that are still deeply entangled with imperial histories of science, and these histories shape the contemporary disparities found in access to medical and legal protections among participants in transnational surrogacy arrangements.



Somatechnics ◽  
2017 ◽  
Vol 7 (2) ◽  
pp. 288-303
Author(s):  
Michael Connors Jackman

This article investigates the ways in which the work of The Body Politic (TBP), the first major lesbian and gay newspaper in Canada, comes to be commemorated in queer publics and how it figures in the memories of those who were involved in producing the paper. In revisiting a critical point in the history of TBP from 1985 when controversy erupted over race and racism within the editorial collective, this discussion considers the role of memory in the reproduction of whiteness and in the rupture of standard narratives about the past. As the controversy continues to haunt contemporary queer activism in Canada, the productive work of memory must be considered an essential aspect of how, when and for what reasons the work of TBP comes to be commemorated. By revisiting the events of 1985 and by sifting through interviews with individuals who contributed to the work of TBP, this article complicates the narrative of TBP as a bluntly racist endeavour whilst questioning the white privilege and racially-charged demands that undergird its commemoration. The work of producing and preserving queer history is a vital means of challenging the intentional and strategic erasure of queer existence, but those who engage in such efforts must remain attentive to the unequal terrain of social relations within which remembering forms its objects.



GIS Business ◽  
2019 ◽  
Vol 14 (3) ◽  
pp. 202-206
Author(s):  
SAJITHA M

Food is one of the main requirements of human being. It is flattering for the preservation of wellbeing and nourishment of the body.  The food of a society exposes its custom, prosperity, status, habits as well as it help to develop a culture. Food is one of the most important social indicators of a society. History of food carries a dynamic character in the socio- economic, political, and cultural realm of a society. The food is one of the obligatory components in our daily life. It occupied an obvious atmosphere for the augmentation of healthy life and anticipation against the diseases.  The food also shows a significant character in establishing cultural distinctiveness, and it reflects who we are. Food also reflected as the symbol of individuality, generosity, social status and religious believes etc in a civilized society. Food is not a discriminating aspect. It is the part of a culture, habits, addiction, and identity of a civilization.Food plays a symbolic role in the social activities the world over. It’s a universal sign of hospitality.[1]



2018 ◽  
Vol 2 (02) ◽  
pp. 59-60
Author(s):  
Farida Yasmin ◽  
Md. Anwarul Karim ◽  
Chowdhury Yakub Jamal ◽  
Mamtaz Begum ◽  
Ferdousi Begum

Epistaxis in children is one of the important presenting symptoms for attending emergency department in paediatric patients. Recurrent epistaxis is common in children. Although epistaxis in children usually occurred due to different benign conditions, it may be one of the important presenting symptoms of some inherited bleeding disorder. Whereas most bleeding disorders can be diagnosed through different standard hematologic assessments, diagnosing rare platelet function disorders may be challenging. In this article we describe one case report of platelet function disorders on Glanzmann’s thrombasthenia (GT). Our patient was a 10-year old girl who presented to us with history of recurrent severe epistaxis. She had a bruise on her abdomen and many scattered petechiae in different parts of the body. Her previous investigations revealed no demonstrable haemostatic anomalies. After performing platelet aggregation test, she was diagnosed as GT.



Author(s):  
Lutfullah Sari ◽  
Abdusselim Adil Peker ◽  
Dilek Hacer Cesme ◽  
Alpay Alkan

Background: Neurosarcoidosis manifests symptomatically in 5% of patients with sarcoidosis and diagnosis can be challenging if not clinically suspected. Cerebral mass-like presentation of neurosarcoidosis rarely reported in the literature. We presented a woman with neurosarcoidosis who had a cerebral mass-like lesion which completely disappeared after medical treatment. Discussion: A 37-year-old woman with history of pulmonary sarcoidosis referred to the emergency service of our hospital with a one-month history of progressive dizziness, nausea and seeing flashing lights. At neurologic examination, numbness and weakness on the left side of the body, deviation of uvula toward the right side was seen. Cranial MRI demonstrated a 2.5x2 cm in size mass lesion which hypointense on T1 WI, heterogeneous hyperintense on T2 and FLAIR sequence with peripheral vasogenic edema and heterogeneous, irregular contrast enhancement simulating brain tumor. Also, leptomeningeal and nodular contrast enhancement was seen on brainstem, cerebellar vermis, perimesencephalic cistern and left frontal, bilateral parietooccipital sulcus. In laboratory tests; The level of serum angiotensin-converting enzyme (ACE) was 53 IU/mL (N:8-52 IU/mL) and cerebrospinal fluid (CSF) ACE was 23 IU/mL (N:0-2.6 IU/mL). CSF cytology analysis was normal. Pattern 2 oligoclonal bands were present. With these clinical, laboratory and radiological findings, cerebral involvement of sarcoidosis was suspected. Biopsy was not performed due to the high risk of morbidity caused by the deep location of the lesion.Patient was treated with methylprednisolone and Azathioprine for a month.On post-treatment control imaging; lesion disappeared completely without residual leptomeningeal and nodular contrast enhancement.Also, neurologic symptoms were decreased remarkably. Conclusion: Multi-system inflammatory disorders like sarcoidosis, can present with mass-like lesion in the brain parenchyma. While early diagnosis is important to prevent unnecessary interventions like biopsy and surgery, it is crucial to initiate the necessary treatment with the aim of recovery without sequelae. Radiological and clinical follow-up are fundamental in differential diagnosis.



2014 ◽  
Vol 2 (3) ◽  
Author(s):  
Redacción CEIICH

<p class="p1">The third number of <span class="s1"><strong>INTER</strong></span><span class="s2"><strong>disciplina </strong></span>underscores this generic reference of <em>Bodies </em>as an approach to a key issue in the understanding of social reality from a humanistic perspective, and to understand, from the social point of view, the contributions of the research in philosophy of the body, cultural history of the anatomy, as well as the approximations queer, feminist theories and the psychoanalytical, and literary studies.</p>



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