The role of the tectonic factor in the formation of the berriasian-valanginian clinoforms of the Western part of Yenisei-Khatanga regional trough and the neighboring areas of Western Siberian geosyneclysis

2020 ◽  
Author(s):  
Olga N. Zlobina ◽  
◽  
Tatyana Yu. Karamysheva ◽  
Keyword(s):  
Active Zone ◽  
Underwater Landslides

It has been established that the Nizhnexetskaya and Sukhodudinskaya (lower part) formations, and probably, the underlying deposits - Golchihinskaya (upper part) and Yanovstanskaya (roof), represent the clinoform complex. The article presents the argument that the tectonic factor in the formation of clinoforms was the main. The largest amount of debris material moved in this geodynamically active zone due to seismic disturbances that generate earthquakes, tsunamis and associated underwater landslides and turbidite flows, which as a result formed wedge-shaped bodies.

Role of Survey Department In Disaster Management In Nepal

2012 ◽  
Vol 11 ◽  
pp. 31-35
Author(s):  
Suresh Man Shrestha
Keyword(s):  
Natural Disaster ◽  
Disaster Management ◽  
Active Zone ◽  
Total Population ◽  
Outburst Flood ◽  
The World ◽  
Mountain System ◽  
Major River ◽  
Negative Impacts

The Himalayan Range is a young mountain system of the world and about 83% of the total area of Nepal is covered by high hills and mountains. Major river systems of Nepal originate from the glaciers and are perennial in nature. According to the preliminary results of the Census 2011, more than 50% of total population live in Terai and are vulnerable to flood. Since Nepal falls under the seismically active zone earthquake has been one of the major disasters experienced in the country. Fire, Glacier Lake Outburst Flood, lightening, hail storm are some other natural disaster claiming lives of Nepalese people. It is not possible to stop disasters, but the consolidated effort of different organization may make us better prepared to overcome the negative impacts of such disasters. This article tries to explore the role of Survey Department in this context.

scholarly journals Role of the active zone protein, ELKS, in insulin secretion from pancreatic β-cells

2019 ◽  
Vol 27 ◽  
pp. S81-S91 ◽  
Author(s):  
Mica Ohara-Imaizumi ◽  
Kyota Aoyagi ◽  
Toshihisa Ohtsuka
Keyword(s):  
Insulin Secretion ◽  
Active Zone ◽  
Β Cells ◽  
Pancreatic Β Cells

scholarly journals ENTROPY PRODUCTION OF ENTIRELY DIFFUSIONAL LAPLACIAN TRANSFER AND THE POSSIBLE ROLE OF FRAGMENTATION OF THE BOUNDARIES

Fractals ◽  
2015 ◽  
Vol 23 (03) ◽  
pp. 1550026 ◽  
Author(s):  
K. KARAMANOS ◽  
S. I. MISTAKIDIS ◽  
T. J. MASSART ◽  
I. S. MISTAKIDIS
Keyword(s):  
Entropy Production ◽  
Active Zone ◽  
Numerical Study ◽  
Near Field ◽  
Irreversible Thermodynamics ◽  
Koch Curve ◽  
Variational Functional ◽  
Numerical Resolution ◽  
New Interpretation

The entropy production and the variational functional of a Laplacian diffusional field around the first four fractal iterations of a linear self-similar tree (von Koch curve) is studied analytically and detailed predictions are stated. In a next stage, these predictions are confronted with results from numerical resolution of the Laplace equation by means of Finite Elements computations. After a brief review of the existing results, the range of distances near the geometric irregularity, the so-called "Near Field", a situation never studied in the past, is treated exhaustively. We notice here that in the Near Field, the usual notion of the active zone approximation introduced by Sapoval et al. [M. Filoche and B. Sapoval, Transfer across random versus deterministic fractal interfaces, Phys. Rev. Lett. 84(25) (2000) 5776;1 B. Sapoval, M. Filoche, K. Karamanos and R. Brizzi, Can one hear the shape of an electrode? I. Numerical study of the active zone in Laplacian transfer, Eur. Phys. J. B. Condens. Matter Complex Syst. 9(4) (1999) 739-753.]2 is strictly inapplicable. The basic new result is that the validity of the active-zone approximation based on irreversible thermodynamics is confirmed in this limit, and this implies a new interpretation of this notion for Laplacian diffusional fields.

The role of active zone protein Rab3 interacting molecule 1 alpha in the regulation of norepinephrine release, response to novelty, and sleep

Neuroscience ◽  
2008 ◽  
Vol 154 (2) ◽  
pp. 821-831 ◽  
Author(s):  
G. Lonart ◽  
X. Tang ◽  
F. Simsek-Duran ◽  
M. Machida ◽  
L.D. Sanford
Keyword(s):  
Active Zone ◽  
Norepinephrine Release

scholarly journals Netrin instructs synaptic vesicle clustering through Rac GTPase, MIG-10, and the actin cytoskeleton

2012 ◽  
Vol 197 (1) ◽  
pp. 75-88 ◽  
Author(s):  
Andrea K.H. Stavoe ◽  
Daniel A. Colón-Ramos
Keyword(s):  
Cell Migration ◽  
Subcellular Localization ◽  
Actin Cytoskeleton ◽  
Axon Guidance ◽  
Synaptic Vesicle ◽  
Active Zone ◽  
Rac Gtpase ◽  
Signaling Modules

Netrin is a chemotrophic factor known to regulate a number of neurodevelopmental processes, including cell migration, axon guidance, and synaptogenesis. Although the role of Netrin in synaptogenesis is conserved throughout evolution, the mechanisms by which it instructs synapse assembly are not understood. Here we identify a mechanism by which the Netrin receptor UNC-40/DCC instructs synaptic vesicle clustering in vivo. UNC-40 localized to presynaptic regions in response to Netrin. We show that UNC-40 interacted with CED-5/DOCK180 and instructed CED-5 presynaptic localization. CED-5 in turn signaled through CED-10/Rac1 and MIG-10/Lamellipodin to organize the actin cytoskeleton in presynaptic regions. Localization of this signaling pathway to presynaptic regions was necessary for synaptic vesicle clustering during synapse assembly but not for the subcellular localization of active zone proteins. Thus, vesicle clustering and localization of active zone proteins are instructed by separate pathways downstream of Netrin. Our data indicate that signaling modules known to organize the actin cytoskeleton during guidance can be co-opted to instruct synaptic vesicle clustering.

scholarly journals Phyllotactic patterning of gerbera flower heads

2021 ◽  
Vol 118 (13) ◽  
pp. e2016304118
Author(s):  
Teng Zhang ◽  
Mikolaj Cieslak ◽  
Andrew Owens ◽  
Feng Wang ◽  
Suvi K. Broholm ◽  
...  
Keyword(s):  
Active Zone ◽  
Computational Models ◽  
Lateral Displacement ◽  
Fibonacci Number ◽  
Gradual Transition ◽  
Gerbera Hybrida ◽  
Circular Pattern ◽  
Zigzag Pattern ◽  
Geometric Regularity

Phyllotaxis, the distribution of organs such as leaves and flowers on their support, is a key attribute of plant architecture. The geometric regularity of phyllotaxis has attracted multidisciplinary interest for centuries, resulting in an understanding of the patterns in the model plants Arabidopsis and tomato down to the molecular level. Nevertheless, the iconic example of phyllotaxis, the arrangement of individual florets into spirals in the heads of the daisy family of plants (Asteraceae), has not been fully explained. We integrate experimental data and computational models to explain phyllotaxis in Gerbera hybrida. We show that phyllotactic patterning in gerbera is governed by changes in the size of the morphogenetically active zone coordinated with the growth of the head. The dynamics of these changes divides the patterning process into three phases: the development of an approximately circular pattern with a Fibonacci number of primordia near the head rim, its gradual transition to a zigzag pattern, and the development of a spiral pattern that fills the head on the template of this zigzag pattern. Fibonacci spiral numbers arise due to the intercalary insertion and lateral displacement of incipient primordia in the first phase. Our results demonstrate the essential role of the growth and active zone dynamics in the patterning of flower heads.

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