scholarly journals High water flow periods for the rivers from Someşean Plateau

2020 ◽  
Vol 27 (2) ◽  
pp. 85-97
Author(s):  
V. Sorocovschi
Keyword(s):  
Case Studies ◽  
Water Flow ◽  
Genetic Factors ◽  
High Water ◽  
High Flow ◽  
Economic Effects ◽  
Water Runoff ◽  
Complex Phenomenon ◽  
Spatial Parameters ◽  
Temporal And Spatial

The period of high water flow from rivers is a complex phenomenon, which manifests itself in the form of large waters and floods. High flow periods are an important phase in the runoff of rivers, both by their extreme nature and by the effects they can produce on the components of the environment. The paper analyses several aspects related to the periods of water runoff from rivers: genetic factors, frequency, and temporal and spatial parameters of large waters and floods, case studies of the most representative floods, environmental, social and economic effects induced by floods.

Temporal and Spatial Parameters of Stepping in Place in Children and Adults

2011 ◽  
Vol 113 (1) ◽  
pp. 331-338 ◽  
Author(s):  
Yoshifumi Ikeda ◽  
Yu Kamiyama ◽  
Hideyuki Okuzumi ◽  
Shogo Hirata ◽  
Mitsuru Kokubun
Keyword(s):  
Spatial Parameters ◽  
Temporal And Spatial ◽  
Stepping In Place

scholarly journals Temporal and spatial variation of Myriapoda (Diplopoda and Chilopoda) assemblages in a Neotropical floodplain

2018 ◽  
Vol 18 (2) ◽  
Author(s):  
Lorhaine Santos-Silva ◽  
Tamaris Gimenez Pinheiro ◽  
Amazonas Chagas-Jr ◽  
Marinêz Isaac Marques ◽  
Leandro Dênis Battirola
Keyword(s):  
Spatial Variation ◽  
Habitat Type ◽  
Temporal Distribution ◽  
High Water ◽  
Trophic Levels ◽  
Temporal And Spatial Variation ◽  
Ecosystem Integrity ◽  
Mato Grosso ◽  
Temporal And Spatial ◽  
Hydrological Cycles

Abstract: Myriapods constitute important edaphic macrofauna taxa which dwell in different trophic levels and influence the dynamics of these environments. This study evaluated the variation in composition, richness and abundance of edaphic myriapod assemblages as a function of the distribution and structure of flooded and non-flooded habitats (spatial variation) and hydrological seasonality (temporal variation) in a floodplain of the northern Pantanal region of Mato Grosso, Brazil. Sampling was carried out in three areas of the Poconé Pantanal, along an altitudinal and inundation gradient consisting of inundated and non-inundated habitats and different vegetation formations. Three quadrats (10 x 10 m) were delimited within each habitat type, where sampling was performed using pitfall traps and mini-Winkler extractors during the dry, rising water, high water and receding water periods of two hydrological cycles within the Pantanal (2010/2011 and 2011/2012). A total of 549 millipedes were collected, consisting of 407 Diplopoda and 142 Chilopoda distributed in six orders, 12 families and 20 species. The assemblages composition varied throughout the seasonal periods, indicating that the rising water and dry periods differed from the high water and receding water periods. In addition to the variation between seasonal periods, myriapod richness and abundance also varied in relation to areas consisting of different vegetation formations. Thus, it can be concluded that the hydrological seasonality associated with the inundation gradient and different vegetation types were determinant in the heterogeneous spatial and temporal distribution of myriapod assemblages, validating that the conservation of these invertebrates in the Pantanal is directly linked to the preservation of vegetation, and consequently, ecosystem integrity.

TEMPORAL AND SPATIAL PARAMETERS OF GAIT IN CHILDREN. II: PATHOLOGICAL GAIT

2008 ◽  
Vol 35 (2) ◽  
pp. 114-125 ◽  
Author(s):  
E. F. Wheelwright ◽  
R. A. Minns ◽  
R. A. Elton ◽  
H. T. Law
Keyword(s):  
Spatial Parameters ◽  
Pathological Gait ◽  
Temporal And Spatial

Mature Field Economic Rejuvenation with Infill and Re-Entry Multilateral Well Creation Techniques

2021 ◽  
Author(s):  
Benjamin Butler ◽  
Justin Roberts ◽  
Matthew Kelsey ◽  
Steffen Van Der Veen
Keyword(s):  
Case Studies ◽  
Field Performance ◽  
Cost Effective ◽  
High Water ◽  
Additional Time ◽  
Flow Management ◽  
Performance Improvements ◽  
Mature Field ◽  
Water Cut ◽  
Time Required

Abstract Multilateral wells have been proven over decades and have developed into a reliable and cost effective approach to mature field rejuvenation and extended commercial viability. This paper will discuss case studies demonstrating a number of techniques used to create infill multilateral wells in existing fields with a high level of reliability and repeatability. Techniques reviewed will cover cutting and pulling production casing to drill and case a new mainbore versus sidetracking and adding laterals to an existing mainbore. Discussion will also cover completion designs that tie new laterals into existing production casing providing significantly greater reservoir contact. Temporary isolation of high water-cut laterals brought into production later in the well's life through bespoke completion designs will also be discussed. Case studies will include discussion of workover operations, isolation methods, and lateral creation systems. Where available, resulting field performance improvements will also be discussed. In Norway, slot recoveries are commonly performed by cutting and pulling the 10-3/4" casing, redrilling a new mainbore, and running new casing. This enables junction placement closer to unswept zones and easier lateral drilling to targets. It does have drawbacks, however, related to the additional time required to pull the subsea xmas tree and challenges associated with pulling casing. In 2019, Norway successfully completed a 10-3/4" retrofit installation, whereas a sidetrack was made from the 10-3/4" and an 8-5/8" expandable liner was run down into the reservoir pay zone where two new laterals were created. The 8-5/8" liner saved time otherwise spent having to drill the section down to the payzone from the laterals. These wells have a TAML Level 5 isolated junction, Autonomous Inflow Control Devices (AICDs) in each lateral, and an intelligent completion interface across the junction, enabling active flow management and monitoring of both branches. In Asia, infill laterals were added to existing wellbores by sidetracking 9-5/8" casing and tying production back to the original mainbore. These dual laterals were completed with intelligent completions to enable lateral flow management and monitoring of both laterals. In Australia, dual laterals were created in a similar fashion; laterals are added to existing wells; however, a novel approach was used to manage water from existing lower mainbore laterals whereby they are shut in at completion and opened later when the new lateral is watered out. The older lateral now produces at lower water cut given the time allowed for water coning in the lateral to relax. Using this practice, production is alternated back and forth between the two laterals. In the Middle East, an older well has been converted from TAML Level 4 to Level 5 in order to prevent detected gas migrating into the mainbore at the junction. This conversion of a cemented junction well has enabled production to resume on this well. The well was converted to incorporate an intelligent completion to enable flow control of each lateral. This paper intends to provide insights into the various mature field re-entry methods for multilateral well construction, and a review of the current technology capabilities and well designs through the review of multiple case histories.

scholarly journals Residential Construction Sustainability in the UK and Prospects of Knowledge Transfer to Kazakhstan

2015 ◽  
Vol 8 (9) ◽  
pp. 14 ◽  
Author(s):  
Serik Tokbolat ◽  
Rajnish Kaur Calay
Keyword(s):  
Case Studies ◽  
Wide Spectrum ◽  
Asian Country ◽  
Economic Effects ◽  
Simulation Research ◽  
Housing Projects ◽  
Construction Companies ◽  
Sustainable Housing ◽  
Central Asian ◽  
The Uk

<p>This paper aimed to investigate the up-to-date levels of sustainability in the UK construction with special interest to sustainable housing. It also aims to examine the justification behind construction and housing sustainability, and to look at the practicality of transferring current expertise within the UK as well as to an emerging Central Asian country such as Kazakhstan. A synergy of case studies, survey and numerical simulation research methodologies were applied to undertake a wide-spectrum analysis of the topic. Regardless of difficulties related to applying sustainable practices the considered housing developments are found to be satisfactory in terms of environmental and socio-economic effects. Technical evaluation of the case studies compared to standard housing parameters has shown encouraging outcomes and confirmed the claimed energy and water efficiency. Findings of the survey indicated that construction companies of the UK and Kazakhstan are at different stages of application of sustainability measures. It was also established that companies and public are mainly optimistic about sustainability if suitable economical and legal conditions are ensured. Finally, numerical simulations have shown that selected sustainability measures made the studied housing projects competitive on the sustainability market. </p>

scholarly journals DOC sources and DOC transport pathways in a small headwater catchment as revealed by carbon isotope fluctuation during storm events

2014 ◽  
Vol 11 (11) ◽  
pp. 3043-3056 ◽  
Author(s):  
T. Lambert ◽  
A.-C. Pierson-Wickmann ◽  
G. Gruau ◽  
A. Jaffrezic ◽  
P. Petitjean ◽  
...  
Keyword(s):  
High Resolution ◽  
High Flow ◽  
Published Data ◽  
Storm Events ◽  
Transport Pathways ◽  
Relative Contribution ◽  
Temporal And Spatial ◽  
High Flow Period ◽  
Doc Flux ◽  
Headwater Catchment

Abstract. Monitoring the isotopic composition (δ13CDOC) of dissolved organic carbon (DOC) during flood events can be helpful for locating DOC sources in catchments and quantifying their relative contribution to stream DOC flux. High-resolution (< hourly basis) δ13CDOC data were obtained during six successive storm events occurring during the high-flow period in a small headwater catchment in western France. Intra-storm δ13CDOC values exhibit a marked temporal variability, with some storms showing large variations (> 2 ‰), and others yielding a very restricted range of values (< 1 ‰). Comparison of these results with previously published data shows that the range of intra-storm δ13CDOC values closely reflects the temporal and spatial variation in δ13CDOC observed in the riparian soils of this catchment during the same period. Using δ13CDOC data in conjunction with hydrometric monitoring and an end-member mixing approach (EMMA), we show that (i) > 80% of the stream DOC flux flows through the most superficial soil horizons of the riparian domain and (ii) the riparian soil DOC flux is comprised of DOC coming ultimately from both riparian and upland domains. Based on its δ13C fingerprint, we find that the upland DOC contribution decreases from ca.~30% of the stream DOC flux at the beginning of the high-flow period to < 10% later in this period. Overall, upland domains contribute significantly to stream DOC export, but act as a size-limited reservoir, whereas soils in the wetland domains act as a near-infinite reservoir. Through this study, we show that δ13CDOC provides a powerful tool for tracing DOC sources and DOC transport mechanisms in headwater catchments, having a high-resolution assessment of temporal and spatial variability.

LUKIANETS O.I., GREBІN V.V. TIME DYNAMICS OF WATER BALANCE COMPONENTS IN THE PSEL RIVER BASIN

2021 ◽  
pp. 28-36
Author(s):  
O.I. Lukіanets ◽  
V.V Grebіn
Keyword(s):  
Water Balance ◽  
River Basin ◽  
Water Flow ◽  
Water Bodies ◽  
Water Runoff ◽  
Water Balance Components ◽  
Total Evaporation ◽  
Modern Period ◽  
The Relationship ◽  
The Town

In the article, in order to identify the generalized role of changes that occurred in the Psel River basin with such climatic indicators as air temperature, amount of precipitation, their form of precipitation, the structure of water bodies feeding, as well as water flow in the modern period, the average water balance for a long-term period was calculated the Psel river basin near the town of Gadyach. In general, the water balance equation shows the ratio of water input and consumption within a river basin, taking into account changes in its reserves over a selected time interval and allows one to assess the relationship of its individual components. In the article identifies changes in the ratio between the inflow (amount of precipitation) and consumption of water (total evaporation and runoff) for two periods – the climatic norm of 1961-1990 and modern 1990-2019. Analysis of the temporal dynamics of the water balance components of the Psel river basin showed that the values of the water balance components within the Psel river basin near the town of Gadyach in the modern period have decreased in comparison with the period of the climatic norm – the amount of precipitation by 6,2%, water flow by 17,5%, evapotranspiration by 1,8%. But, analyzing the relationship between the inflow and outflow of water in the basin for the two study periods 1961-1990 and 1990-2019, it can be stated that during the period of the climatic norm, the percentage of water flow from the total precipitation was greater (coefficient water flow 16.2%) than in the modern period (coefficient water flow 14.2%). With regard to total evaporation in water-balance ratios, its share in the water-balance ratio has increased over the modern period (1990-2019). If during the period of climatic normal (1961-1990) the aridity coefficient was 83.8%, then in the modern period, it is 85.8%. That is, the “redistribution” of the water volumes of atmospheric precipitation took place towards the total evaporation with a decrease in the volume of water used to form the water runoff. For the basin of the river Psel – the city of Gadyach in the modern period on the average ≈ 11 mm (or ≈ 130000000 m3) evaporate instead of replenishment of water resources. In the previous period of 1961-1990, on the contrary, ≈ 12 mm (or 136000000 m3) did not evaporate, but flowed into the water bodies of the basin.

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