scholarly journals Modeling of solid sediment transport in mountain rivers

2020 ◽  
Vol 175 ◽  
pp. 12002 ◽  
Author(s):  
Issam Boukhanef ◽  
Anna Khadzhidi ◽  
Lyudmila Kravchenko ◽  
Zeroual Ayoub ◽  
Kastali Abdennour
Keyword(s):  
Sediment Transport ◽  
Fine Particles ◽  
Agricultural Soils ◽  
Suspended Sediments ◽  
High Water ◽  
The Other ◽  
Concentration Data ◽  
Solid Transport ◽  
One Year ◽  
The One

In Algeria, the problems of erosion and sediment transport are critical, since they have the most dramatic consequences of the degradation of agricultural soils on the one hand and the siltation of the dam on the other .The sediment transport in the Algerian basins is very important especially during the periods of floods, It is in this sense that this study, which consists of estimating the sediment transport in suspension and determining the models of relation linking the liquid discharge and the sediment discharge in order to estimate the solid transport in the absence of suspended sediments concentration data at the Sidi Akkacha station at the outlet of the basin of Oued Allala which is subject to a high water erosion, it degrades from one year to the other under the effect of this phenomenon especially during the floods which drain high amounts of fine particles exceeding in general, the concentration of 150 g/l, the results obtained from the application of the models are very encouraging since the correlation between liquid and solid discharge exceeds 80 %.

From Scarcity to Abundance: Achieving Quality-Assured Mass Higher Education

2011 ◽  
Vol 15 (2) ◽  
Author(s):  
Peter P. Smith
Keyword(s):  
Higher Education ◽  
Knowledge Economy ◽  
Good Practice ◽  
The United States ◽  
The Other ◽  
Secondary System ◽  
Mass Higher Education ◽  
Post Secondary ◽  
One Year ◽  
The One

The United States is in a bind. On the one hand, we need millions of additional citizens with at least one year of successful post-secondary experience to adapt to the knowledge economy. Both the Gates and Lumina Foundations, and our President, have championed this goal in different ways. On the other hand, we have a post-secondary system that is trapped between rising costs and stagnant effectiveness, seemingly unable to respond effectively to this challenge. This paper analyzes several aspects of this problem, describes changes in the society that create the basis for solutions, and offers several examples from Kaplan University of emerging practice that suggests what good practice might look like in a world where quality-assured mass higher education is the norm.

scholarly journals Study on Water and Other Drinks Used for Hydration in Movement Activities

2020 ◽  
Vol 71 (8) ◽  
pp. 249-254
Author(s):  
Dragos Ioan Tohanean ◽  
Vasilios Koronas ◽  
Peter Sagat ◽  
Ioan Turcu ◽  
Ioana Maria Curitianu ◽  
...  
Keyword(s):  
Good Health ◽  
High Water ◽  
The Body ◽  
The Other ◽  
Physical Effort ◽  
Medium Level ◽  
The One ◽  
Water Purity ◽  
Movement Activities

The main purpose of this study was to identify the types of water and other drinks used for hydration by those who perform movement activities and also to analyze the quality of these drinks. As a result of performing movement activities, through perspiration, a greater or lesser amount of water is lost from the body. Along with this, a number of nutrients are lost. Given these aspects, the main objective of the research was to understand more correctly, what is involved in proper hydration, which are the factors that must be taken into account to maintain good health. We analyzed and compared the level of the main electrolytes and carbohydrates for different categories of drinks and also measured with the help of two specific devices the level of purity and pH of three categories of drinking water. We indicated general values regarding the ratio of water consumption to weight on the one hand, and on the other hand, we indicated the indicative quantities that should be consumed before, during and after performing medium-level physical effort. As a general conclusion, the importance of sodium, alkaline water and high water purity was highlighted in relation to the categories of beverages analyzed in this study.

scholarly journals Observations of Cross-Shore Chenier Dynamics in Demak, Indonesia

2020 ◽  
Vol 8 (12) ◽  
pp. 972
Author(s):  
Silke A. J. Tas ◽  
Dirk S. van Maren ◽  
Ad J. H. M. Reniers
Keyword(s):  
Sediment Transport ◽  
Monsoon Season ◽  
High Water ◽  
Water Levels ◽  
Coarse Grained ◽  
Observational Period ◽  
The Cross ◽  
The One ◽  
Velocity Moments

Cheniers are important for stabilising mud-dominated coastlines. A chenier is a body of wave-reworked, coarse-grained sediment consisting of sand and shells overlying a muddy substrate. In this paper we present and analyse a week of field observations of the dynamics of a single chenier along the coast of Demak, Indonesia. Despite relatively calm hydrodynamics during the one-week observational period, the chenier migrated surprisingly fast in the landward direction. The role of the tide and waves on the cross-shore chenier dynamics is explored using velocity moments as a proxy for the sediment transport. This approach shows that both tide and waves are capable of transporting the sediment of the chenier system. During calm conditions (representative for the south-east monsoon season), the tides generate a landward-directed sediment transport when the chenier crest is high relative to mean sea level. Waves only generate substantial sediment transport (direct, via skewness, and indirect, via stirring) when the chenier is submerged during periods with higher waves. The cross-shore chenier dynamics are very sensitive to the timing of tide and waves: most transport takes place when high water levels coincide with (relatively) high waves.

scholarly journals Lesión miocárdica perioperatoria en cirugía no cardiaca

2020 ◽  
Vol 12 (2) ◽  
pp. 3
Author(s):  
Daniel Paz Martín
Keyword(s):  
Cardiac Surgery ◽  
Cardiovascular Risk ◽  
Myocardial Injury ◽  
The Other ◽  
High Cardiovascular Risk ◽  
One Year ◽  
The One

La lesión miocárdica perioperatoria (LMP) en cirugía no cardiaca es una complicación, a menudo no identificada, que se relaciona con un aumento de mortalidad a 30 días. Los objetivos del presente trabajo son por una parte, conocer la incidencia de LMP, que se encuentra entorno al 16% en pacientes de alto riesgo cardiovascular. Por otra, evaluar su relación con la mortalidad a 30 días y un año; la presencia de LMP se asocia a una mayor mortalidad. ABSTRACT Perioperative myocardial injury in non-cardiac surgery Perioperative myocardial injury (PMI) in non-cardiac surgery is a complication, often not identified, that is related to an increase in mortality at 30 days. The objectives of this study are, on the one hand, to know the incidence of PMI, which is around 16% in patients with a high cardiovascular risk. On the other, evaluate its relationship with mortality at 30 days and one year; the presence of PMI is associated with increased mortality.

scholarly journals Degrees of Permeability

2020 ◽  
Vol 38 (1) ◽  
pp. 88-104 ◽  
Author(s):  
Luisa T. Schneider
Keyword(s):  
Everyday Life ◽  
The Other ◽  
Social Standing ◽  
Urban Livelihoods ◽  
Embodied Experiences ◽  
Total Institutions ◽  
Nuanced Understanding ◽  
One Year ◽  
The One ◽  
Relationship Of

This article deconstructs a binary that has arisen between prisons as, on the one hand, ‘total institutions’ of exclusion and, on the other, ‘carceral continuums’ that incorporate marginalized urban livelihoods. The experiences of four inmates at Pademba Road, Freetown’s male prison – which accommodates inmates with sentences from one year to life – illustrate that prisons belong in neither camp. Instead, inmates’ unique responses to their imprisonment show that both a prison’s continuity and its exclusionary mechanism are situational and gendered as crime, social standing, capital and agency coalesce. Following Michel de Certeau’s examination of people’s reappropriations of culture in everyday life, this article analyses how inmates’ tactics to reinforce and bend prison walls work to either strengthen or undermine the carceral system’s strategies and influence the prison’s permeability. Inmates’ embodied experiences allow for a nuanced understanding of the inside/outside relationship of imprisonment and of the space between mobility and stasis, subjugation, embrace and resistance.

scholarly journals COMPARISON BETWEEN TURBIDITY MEASURED IN AN ESTUARY AND TURBIDITY CALCULATED FROM LABORATORY TESTS

2011 ◽  
Vol 1 (5) ◽  
pp. 28
Author(s):  
Andre Wallet
Keyword(s):  
Laboratory Tests ◽  
The Other ◽  
Scale Model ◽  
Seine Estuary ◽  
Direct Measurements ◽  
Hydraulic Conditions ◽  
Solid Discharge ◽  
Solid Transport ◽  
The One ◽  
The Relationship

The study of navigation conditions in the Seine estuary has led to scale model tests which are now being carried out by the NEYBPIC Laboratory, Grenoble; for the Port of Rouen Authority. In order to calibrate the model correctly, that is to say to ensure that the natural conditions would be reproduced on the model, it was necessary to carry out laboratory studies on the sand from the estuary bed to determine the solid discharge of this material for definite hydraulic conditions. This was necessary because, while at some distance above the bed direct measurements of the solid transport are relatively easy to make in nature by means of samples, they are practically impossible in the immediate neighborhood of the bottom when the sand is fine, as is the case in the Seine estuary. On the other hand, by taking certain precautions it is possible to measure the solid discharge in the immediate neighborhood of the bottom when.the transport of sand is studied in the laboratory. The two methods, direct measurements of the suspended load in nature and measurements of solid discharge near the bottom in the laboratory therefore complement one another. However, it seemed interesting to justify this method by comparing the results where nature and the laboratory coincide, i.e. for material in suspension. This paper gives details on the procedure followed for these laboratory tests on an experimental canal. The main results of these tests will be reviewed by examining the relationship between the concentration in the neighbourhood of the bottom and the solid discharge on the one hand, and the bottom shear stress on the other.

Study of a pair of DZ twins — the one affected by mongoloidism and trisomy-21, and the other normal with transitory chimerism of 21-trisomic cells

1966 ◽  
Vol 15 (2) ◽  
pp. 208-211 ◽  
Author(s):  
L. Massimo ◽  
G. Gemme ◽  
M. G. Vianello ◽  
B. Verri
Keyword(s):  
Blood Transfusion ◽  
Trisomy 21 ◽  
Normal Chromosome ◽  
The Other ◽  
Reproductive Capacity ◽  
Fetal Blood ◽  
Progressive Loss ◽  
One Year ◽  
The One

SUMMARYTwo DZ monoplacental twins are reported, one affected by mongolism and the other normal. Chromosome examination in the former indicated trisomy 21, while the latter presented a mosaicism consisting, at the age of 13 days, in 70% normal and 30% 21-trisomic cells; at the age of 5 months, in 95% normal and 5% trisomic cells; while, at the age of one year, all the cells appeared to be normal.The possibility of mosaicism, and, according to clinical and hematological findings, that of feto-fetal blood transfusion are excluded.The hypothesis is suggested of a progressive loss of the reproductive capacity of « chimaera » of abnormal lymphocytes.

New contribution to the survey of the theory of the acrotony on the branch of one year grapevine: I - Investigation in the Tunisian vineyard

OENO One ◽  
2000 ◽  
Vol 34 (3) ◽  
pp. 121
Author(s):  
Béchir Ezzili ◽  
M. Bejaoui
Keyword(s):  
Apical Part ◽  
The Other ◽  
North African ◽  
The North ◽  
Result Show ◽  
The Difference ◽  
One Year ◽  
The One ◽  
New Hypothesis ◽  
Test Result

<p style="text-align: justify;">Research in the conduct mode of grapevines other than the north African goblet incited us to make an investigation on the no bursting on table vine canes and to study if the vestigial dormancy is equivalent to acrotony phenomenon. Results of this survey clearly show that this phenomenon varies from one year to the other and that there is a negative interrelationship between the percentage of buds no bursted and the diameter of the basis of the cane on the one hand and of the top on the other hand. The difference in diameters of the basis and apical part is weakly correlated with the percentage of buds no bursted. As a result we concluded that at the level of the cane, the percentage of buds no bursted doesn't only depend on the diameter of the cane but also on the fixing of this one on the carrier axis. The bibliographic survey puts in exergue the low temperature role. We tried to dissociate the acrotony phenomenon and the vestigial dormancy. Test result show that the long cane fixing at the temperature of 4°C during 10 days removes partially or completely the vestigial dormancy but the phenomenon of the acrotony persists. We examined the qualitative answers of the investigation. In Tunisia, on long canes of Muscatel of Italy, a certain percentage of one year old presents both the acrotony (80 p. cent) and the basitony phenomena (8 p. cent) in 1995. The discussion of results of the investigation allowed us to give out a new hypothesis of work concerning the phenomenon which we will to verify.</p>

CONSUMER RISK IN THE ONLINE SHOPPING PROCESS IN 2017-2019

2020 ◽  
Vol 21 (3) ◽  
pp. 133-146
Author(s):  
Martyna Kostrzewska ◽  
Daria Emilia Wrukowska
Keyword(s):  
Risk Perception ◽  
Online Shopping ◽  
Distribution Channel ◽  
The Other ◽  
Delivery Problem ◽  
Consumer Risk ◽  
Risk Areas ◽  
One Year ◽  
The One ◽  
Over Time

This paper presents results from two studies of risks connected with online shopping which were conducted in 2017 and 2018 and 2019. The studies were carried out on a group of 400, 415 and 343 respondents, respectively, using paper questionnaires. The one year gap between the questionnaires allowed conclusions to be drawn not only about the relevance of factors shaping risk perception but also about the evolution of such perception over time. On the one hand, the studies revealed increased trust towards the online distribution channel, while on the other hand they showed the increased importance of risk areas such as express and punctual delivery, problem-free contact with the seller, quick solution of technical and logistical problems, recognition of complaints and delivery of correct products

A Checking Process for Life Assurance Reserves

1934 ◽  
Vol 4 (03) ◽  
pp. 163-177
Author(s):  
E. Olifiers
Keyword(s):  
North American ◽  
The Other ◽  
Life Assurance ◽  
The North ◽  
Gain And Loss ◽  
To Come ◽  
One Year ◽  
The One

The object of this paper is to draw attention to a process of checking the accuracy of the valuation results of any financial year from the preceding year's valuation results (the attained ages as at valuation date increasing by one year) by means of the elements which connect both valuations. These elements are the interest required to maintain the reserves, the net premiums, the reserves of the policies coming in and going out during the financial year, and the expected death strain. In the appendix to this paper the checking process has been applied to the revenue account for the year ending 31st December, 1921, given in Appendix B of Mr. C. Carpmael's paper in J.S.S. Vol. II, No. 2. The determination of the profit or loss from each source has been made on two different assumptions—namely, the one adopted by Mr. Carpmael, that the income and outgo are uniformly distributed over the year allowing half-a-year's interest at valuation rate and the other adopted in the North American gain and loss exhibit of the convention edition by which no allowance is made for half-a-year's interest for the two cases in which the policies are assumed to come in and go out at the beginning of the valuation year as done by Mr. Carpmael in his paper, and in the middle of the valuation year.

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