Stabilization of the erosion process affecting the material of a barrier under repetitive impact by particles

1979 ◽  
Vol 37 (3) ◽  
pp. 1007-1011 ◽  
Author(s):  
Yu. V. Polezhaev
Keyword(s):  
Erosion Process ◽  
Repetitive Impact

Preliminary results of the study on the reasons of the Hai Hau erosion phenomenon

2007 ◽  
Vol 29 (3) ◽  
pp. 415-426
Author(s):  
Pham Van Ninh ◽  
Phan Ngoc Vinh ◽  
Nguyen Manh Hung ◽  
Dinh Van Manh
Keyword(s):  
Mathematical Modeling ◽  
Historical Data ◽  
Middle Part ◽  
Red River ◽  
Erosion Process ◽  
Red River Delta ◽  
The North ◽  
Severe Erosion ◽  
North And South ◽  
Very High

Overall the evolution process of the Red River Delta based on the maps and historical data resulted in a fact that before the 20th century all the Nam Dinh coastline was attributed to accumulation. Then started the erosion process at Xuan Thuydistrict and from the period of 1935 - 1965 the most severe erosion was contributed in the stretch from Ha Lan to Hai Trieu, 1965 - 1990 in Hai Chinh - Hai Hoa, 1990 - 2005 in the middle part of Hai Chinh - Hai Thinh (Hai Hau district). The adjoining stretches were suffered from not severe erosion. At the same time, the Ba Lat mouth is advanced to the sea and to the North and South direction by the time with a very high rate.The first task of the mathematical modeling of coastal line evolution of Hai Hau is to evaluate this important historical marked periods e. g. to model the coastal line at the periods before 1900, 1935 - 1965; 1965 - 1990; 1990 - 2005. The tasks is very complicated and time and working labors consuming.In the paper, the primarily results of the above mentioned simulations (as waves, currents, sediments transports and bottom - coastal lines evolution) has been shown. Based on the obtained results, there is a strong correlation between the protrusion magnitude and the southward moving of the erosion areas.

INVESTIGATION OF EROSION RESISTANCE OF GRAY-BROWN SOILS IN THE SOUTHEASTERN SLOPES OF THE GREATER CAUCASUS

2020 ◽  
pp. 47-49
Author(s):  
Aliyev Z.H.
Keyword(s):  
Erosion Resistance ◽  
Preventive Measures ◽  
Chemical Properties ◽  
Anthropogenic Factors ◽  
Erosion Process ◽  
Greater Caucasus ◽  
Sloping Lands ◽  
Set Up ◽  
Physical And Chemical ◽  
And Chemical Properties

In recent years, sharp changes have occurred in the state of sloping lands of Azerbaijan. There was tension from the influence of the anthropogenic factors on the mountain slopes. The fact that the erosion process is rein-forced in the research site. Due to lack of agrotechnical measures on the slopes erosion process has been strength-ened, soil flooded with soil, physical and chemical properties of the soil have deteriorated, nutritional elements are reduced, vegetation is reduced and destruction limit. For some reason, the purpose of the research was Aqsu, two land cuts were set up to determine the degree of actual erosion in the Qizmeydan village. prevent erosion intensity, take preventive measures to take and implement appropriate measures.

scholarly journals Assesment of soil erosion by 137Cs technique in native forests in Londrina City, Parana, Brazil

2007 ◽  
Vol 50 (6) ◽  
pp. 1051-1060 ◽  
Author(s):  
Avacir Casanova Andrello ◽  
Carlos Roberto Appoloni ◽  
Virgílio Franco do Nascimento Filho
Keyword(s):  
Soil Erosion ◽  
Soil Loss ◽  
Balance Model ◽  
Native Forest ◽  
Mass Balance Model ◽  
Erosion Process ◽  
137Cs Inventory ◽  
Native Forests ◽  
137Cs Distribution ◽  
137Cs Technique

The aim of this work was to assess the soil erosion process in native forest by the 137Cs methodology. The mass balance model was applied to assess the rates of soil loss in three native forests around of Londrina city, Paraná, Brazil. 137Cs distribution depth was of exponential type for the three forests and 137Cs inventory was 241 Bq m-2 for Mata 1, 338 Bq m-2 for Mata 2 and 325 Bq m-2 for Mata UEL. The soil loss value calculated for three native forests was: 6,684 kg ha-1 yr-1 for Mata 1, 1,788 kg ha-1 yr-1 for Mata 2 and 4,524 kg ha-1 yr-1 for Mata UEL.

scholarly journals Biophysical Stimulation in Athletes’ Joint Degeneration: A Narrative Review

Medicina ◽  
2021 ◽  
Vol 57 (11) ◽  
pp. 1206
Author(s):  
Lorenzo Moretti ◽  
Davide Bizzoca ◽  
Giovanni Angelo Giancaspro ◽  
Giuseppe Danilo Cassano ◽  
Francesco Moretti ◽  
...  
Keyword(s):  
Sports Injuries ◽  
Biological Response ◽  
Return To Sport ◽  
Degenerative Joint Disease ◽  
Joint Disease ◽  
Joint Degeneration ◽  
Shockwave Therapy ◽  
Positive Effects ◽  
Repetitive Impact ◽  
Pulsed Electromagnetic

Osteoarthritis (OA) is the most prevalent degenerative joint disease and the main cause of pain and disability in elderly people. OA currently represents a significant social health problem, since it affects 250 million individuals worldwide, mainly adults aged over 65. Although OA is a multifactorial disease, depending on both genetic and environmental factors, it is reported that joint degeneration has a higher prevalence in former athletes. Repetitive impact and loading, joint overuse and recurrent injuries followed by a rapid return to the sport might explain athletes’ predisposition to joint articular degeneration. In recent years, however, big efforts have been made to improve the prevention and management of sports injuries and to speed up the athletes’ return-to-sport. Biophysics is the study of biological processes and systems using physics-based methods or based on physical principles. Clinical biophysics has recently evolved as a medical branch that investigates the relationship between the human body and non-ionizing physical energy. A physical stimulus triggers a biological response by regulating specific intracellular pathways, thus acting as a drug. Preclinical and clinical trials have shown positive effects of biophysical stimulation on articular cartilage, subchondral bone and synovia. This review aims to assess the role of pulsed electromagnetic fields (PEMFs) and extracorporeal shockwave therapy (ESWT) in the prevention and treatment of joint degeneration in athletes.

scholarly journals PREDICTION OF CONSOLIDATED COHESIVE BOTTOM EROSION BY WAVE ACTION

2020 ◽  
pp. 2
Author(s):  
Tingting Zhu ◽  
Nobuhisa Kobayashi
Keyword(s):  
Numerical Model ◽  
Gulf Of Mexico ◽  
Great Lakes ◽  
Erosion Rate ◽  
Cohesive Sediment ◽  
Glacial Till ◽  
Sediment Layer ◽  
Sand Layer ◽  
Erosion Process ◽  
Sand And Gravel

A consolidated cohesive sediment layer exists below a layer of sand on some beaches along the Great Lakes (glacial till) and the Gulf of Mexico. The erosion process of consolidated cohesive sediment may be gradual but irreversible (no recovery) apart from sand and gravel released from the eroded consolidated cohesive sediment. The cohesive sediment erosion rate is increased by a thin mobile layer of sand and decreased by a thick sand layer. The complicated interactions of waves, sand and cohesive bottom are simplified and incorporated into an existing cross-shore numerical model.

scholarly journals Geobotanical characteristics of psammophytic steppes of the Penza region in the Ardym river basin

2021 ◽  
pp. 35-47
Author(s):  
L. A. Novikova ◽  
◽  
S. N. Artemova ◽  
V. K. Makuev ◽  
E. Y. Yakovlev ◽  
...  
Keyword(s):  
River Basin ◽  
Vegetation Cover ◽  
Steppe Zone ◽  
Anthropogenic Effects ◽  
Forest Steppe ◽  
Anthropogenic Influence ◽  
Erosion Process ◽  
Middle Volga Region ◽  
Erosion Processes ◽  
Middle Volga

The research is devoted to the study of poorly preserved psammophytic variants of meadow steppes in the forest-steppe zone of the Middle Volga Region. It has allowed to define the main stages of re-establishment of vegetational cover and estimate the conservation prospects on the river Ardym in different ecological conditions (geomorphological and edaphyc). It has been established that the re-establishment of psammophytic steppes vegetation occurs in a similar way both on the slopes of the predominantly southern exposition and on watershed surfaces. However, in the absence of anthropogenic effects on watershed surfaces, there is a sylvatization of the vegetation cover resulting in displacement of psammophytic steppes. Only the constantly occurring weak natural erosion processes on the slopes of the predominantly southern exposition contribute to the preservation of these rare communities here. Under intense anthropogenic influence, as well as in the conditions of a significant erosion process, the psammophytic steppes fail to be preserved or replaced by steppe meadows.

scholarly journals THE CONSEQUENCES OF EROSION ON THE SLOPE LANDS OF AZERBAIJAN AND MEASURES TO COMBAT IT

2019 ◽  
Vol 7 (8) ◽  
pp. 489-495
Author(s):  
RANS Z.H. Aliyev
Keyword(s):  
Soil Erosion ◽  
Anthropogenic Factors ◽  
Potential Danger ◽  
Ecological Situation ◽  
Erosion Process ◽  
The Republic ◽  
And Control ◽  
Natural And Anthropogenic Factors

The article considers the probability of the intensity of the erosion process and the prerequisites for its mitigation and control. The results of the research prove that soil erosion is based on natural and anthropogenic factors. The main objectives of the study were to determine the amount and level of development of worn and erosion-prone soils in the foothills of the country, where it is very difficult to develop on the slope soils of Upper Shirvani. Therefore, in this connection, the tasks are solved, taking into account the requirements of preserving the ecological situation in the example of the Shamakhi district of the Upper Shirvan zone of the Republic of Azerbaijan, where the areas of its potential danger are identified and the preconditions for its prevention are given.

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