scholarly journals Groundwater outflows and fault density spatial relation in the Baikal rift system (Russia)

2018 ◽  
Vol 7 (1) ◽  
Author(s):  
Elena Alexandrovna Kuz'mina ◽  
Anna Vladimirovna Novopashina

For the Baikal rift system (BRS) territory (Russian Federation) and the Barguzin-Baunt depression branch zone, active faults density is compared with the thermal and cold spring’s quantity and temperature to identify the geospatial statistical relationship of those parameters with a view to quantify the main factors connected with base principles study of modern hydrothermal formation. Statistical calculations show that the hot and cold spring’s number per unit area increases within the active faults number. It is established that an area with active faults density higher, than the mean value, is characterized by the maximum number of thermal springs. Correlation analysis showed that the number of modern mineral water springs per unit area and their temperature depend on the earth’s crust fragmentation degree: zones of reduced density are characterized by rare but hotter thermal springs, and zones of increased density are characterized by numerous and colder thermal vents, which probably connects with water dilution by underground cold waters in a more fractured geological environment.

2004 ◽  
Vol 380 (3-4) ◽  
pp. 261-272 ◽  
Author(s):  
S.I. Sherman ◽  
V.M. Dem'yanovich ◽  
S.V. Lysak

2021 ◽  
Vol 10 (4) ◽  
pp. 561
Author(s):  
Aliyah Snyder ◽  
Christopher Sheridan ◽  
Alexandra Tanner ◽  
Kevin Bickart ◽  
Molly Sullan ◽  
...  

Dysregulation of the autonomic nervous system (ANS) may play an important role in the development and maintenance of persistent post-concussive symptoms (PPCS). Post-injury breathing dysfunction, which is influenced by the ANS, has not been well-studied in youth. This study evaluated cardiorespiratory functioning at baseline in youth patients with PPCS and examined the relationship of cardiorespiratory variables with neurobehavioral outcomes. Participants were between the ages of 13–25 in two groups: (1) Patients with PPCS (concussion within the past 2–16 months; n = 13) and (2) non-injured controls (n = 12). Capnometry was used to obtain end-tidal CO2 (EtCO2), oxygen saturation (SaO2), respiration rate (RR), and pulse rate (PR) at seated rest. PPCS participants exhibited a reduced mean value of EtCO2 in exhaled breath (M = 36.3 mmHg, SD = 2.86 mmHg) and an altered inter-correlation between EtCO2 and RR compared to controls. Neurobehavioral outcomes including depression, severity of self-reported concussion symptoms, cognitive catastrophizing, and psychomotor processing speed were correlated with cardiorespiratory variables when the groups were combined. Overall, results from this study suggest that breathing dynamics may be altered in youth with PPCS and that cardiorespiratory outcomes could be related to a dimension of neurobehavioral outcomes associated with poorer recovery from concussion.


1978 ◽  
Vol 91 (1) ◽  
pp. 13-16 ◽  
Author(s):  
D. I. Givens ◽  
J. R. Hopkins

SummaryA total of 225 herbage samples were taken from two areas with a history of bovine hypocupraemia and examined for their Cu, Mo, total S, Zn, Fe and Cd content.In general, the concentrations of Cu and Mo (mean values 10·4 and 1·6 mg/kgD.M. respectively) were normal, as were those of Zn, Fe and Cd (mean values 43, 255 and 0–59 mg/kg D.M. respectively). The total S concentrations (mean value 3·5 g/kg D.M.) were, however, higher than found by some other workers.The concentrations of available herbage Cu were calculated using the following relationship of Suttle & McLauchlan (1976):logTA Cu = –0·0019 Mo–0·0755 S–0·0131 Mo × S–1·153,where TA Cu is the true availability of Cu, and Mo and total sulphur (S) are dietary concentrations as mg/kg D.M. and g/kg D.M. respectively. Animal requirements for available Cu were derived from estimates of the factorial Cu requirements of various classes of livestock, and when these were compared with the calculated concentrations of available Cu in the herbage they provided a possible explanation for the widespread hypocupraemia experienced in these areas.


2016 ◽  
Vol I (I) ◽  
pp. 31-37
Author(s):  
Mati Ullah ◽  
Muhammad Saqib Khan ◽  
Noman Ahmad Khan

Nightmares badly influence health and learning. Population of the study comprised of all boys and girls of Secondary Schools in NWA whereas (n=403) respondents, 202(50.12%) boys and 201(49.88%) girls were taken as sample from the entire population. Face-to-face questionnaire was used to collect data from respondents through stratified random sampling technique. The key objective of the study was to examine relationship of nightmares with students’ health and their academic achievement. Data was delimited to Secondary School students in NWA. Data was statistically analyzed through SPSS by using Pearson Correlation. The respondents perceived nightmares responsible for students’ poor health and low academic achievement. The Mean value of nightmare was 3.2109, SD, 1.43263, and (p, .000 < 0.05) with negative ‘r’= - .355** which shows negative correlation of nightmares with students’ health and their academic achievement. Results and conclusions were drawn. Recommendations were suggested for future researchers and further improvement in the study.


2018 ◽  
Vol 12 (1) ◽  
pp. 47-51 ◽  
Author(s):  
Amarnath Chelladurai ◽  
Suhasini Balasubramaniam ◽  
Sarenya Preyah Anbazhagan ◽  
Sathyan Gnanasihamani ◽  
Sukumar Ramaswami

<sec><title>Study Design</title><p>A retrospective radiological study of the ligamentum flavum (LF).</p></sec><sec><title>Purpose</title><p>We determined the relationship of dorsal spinal LF thickening with age and sex using magnetic resonance imaging (MRI). We also determined whether LF thickening has a predominant tendency to occur at a specific dorsal level and on a specific side.</p></sec><sec><title>Overview of Literature</title><p>Many researchers have studied LF thickness at dorsal levels in patients with compressive myelopathy. However, there is a dearth of literature pertaining to the study of dorsal LF thickness in patients without myelopathy.</p></sec><sec><title>Methods</title><p>LF thickness was measured at dorsal levels from T1 to T12 on both sides using MRI in 100 individuals. The patients were divided into three groups based on age: 20 to 40, 41 to 60, and &gt;60 years. On axial T2-weighted imaging at the mid-disc level, LF thickness was measured perpendicular to the lamina border, either at half the length of LF or at maximum thickness, whichever was greater.</p></sec><sec><title>Results</title><p>We found that LF thickness does not increase significantly with increasing age and there was no significant disparity in LF thickness between the sides and sexes. We also found that there was a significant increase in LF thickness at the T10–T11 level (mean value, 3.27±0.94 mm).</p></sec><sec><title>Conclusions</title><p>LF thickness does not appear to have any side/sex dominance. LF thickening has a predominant tendency to occur specifically at the T10–T11 level. This may be due to maximum tensile strength and mobility at this level. Because there is an increased tendency for LF thickening at the T10–T11 level, this may be used as a reference point for counting the vertebral levels.</p></sec>


2014 ◽  
Vol 55 (2) ◽  
pp. 190-215 ◽  
Author(s):  
S.S. Tsypukova ◽  
A.B. Perepelov ◽  
E.I. Demonterova ◽  
L.A. Pavlova ◽  
A.V. Travin ◽  
...  

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