Exhaustible Natural Resources and the Classical Method of Long-Period Equilibrium

1983 ◽  
pp. 186-199 ◽  
Author(s):  
Sergio Parrinello
Keyword(s):  
Natural Resources ◽  
Classical Method ◽  
Long Period

THE BIOENERGY POTENTIAL OF UKRAINIAN’S POLISSIA

2015 ◽  
Vol 1 (1) ◽  
pp. 47-52
Author(s):  
Taras Mykytyn
Keyword(s):  
Land Use ◽  
Renewable Energy ◽  
Natural Resources ◽  
Renewable Energy Sources ◽  
High Yield ◽  
Energy Sources ◽  
Natural Conditions ◽  
Long Period ◽  
Intensive Use ◽  
The World

The 20st century was the beginning of an intensive use of renewable energy sources, including bioenergy. The rational using of natural resources in the world has been investigated.The long period comparison of the variables acreage in Ukraine and Polissia Region has been done. The analysis of land use in Rivne region has been ordered. The agricultural lands are involved for growing crops, particularly in Polisskiy. The characteristic of natural conditions of Polissia Region of Ukraine has been done.The wetlands low capacity of land not used in Polissia region and gradually become forests. A growing energy willow on Polissia Region has been ordered. For willow natural conditions are most favorable in this region. The characteristic of energy willow biomass has been investigated. The technology of growing of energy willow has been done. The experimental plantations of willow give a high yield of biomass. The efficiency calculation of growing energy willow has been done. The model of growing energy willow has been done.

scholarly journals A century reconstruction of the mass balance of Glacier de Sarennes, French Alps

2002 ◽  
Vol 48 (160) ◽  
pp. 142-148 ◽  
Author(s):  
Olivier Torinesi ◽  
Anne Letréguilly ◽  
François Valla
Keyword(s):  
Time Series ◽  
Mass Balance ◽  
Classical Method ◽  
Meteorological Data ◽  
New Method ◽  
Calibration Period ◽  
French Alps ◽  
Long Period ◽  
Albedo Change

AbstractThe 50 year time series of mass balance on Glacier de Sarennes is one of the longest in the French Alps, and so is often used as a reference for glacier variations in the French Alps. Meteorological data can be used to extend the series backwards in time. Martin (1978) proposed such a reconstruction for the 1882–1977 period. With 50 years of observations, we show that the classical method used by Martin is too dependent on the calibration period. We therefore try to improve the accuracy of this reconstruction using the Vincent and Vallon (1997) method which takes into account the albedo change of the surface during the ablation period (this is called the daily method). This new method appears to be stable in time. Once calibrated, the daily method is applied to reconstruct the 1881–1949 period. The new reconstruction is compared to a volumetric balance between two maps from 1906 and 1981. It appears that both reconstructions (classical and daily) fail to render the trend correctly over a long period of time. The cumulative centred mass balance correlates well (r2 = 0.62) with the hydrological mass-balance series of Aletschgletscher, Switzerland.

scholarly journals Characteristics of development of Tajik jewelry art at the turn of the 21st century

2018 ◽  
Vol 50 ◽  
pp. 01226
Author(s):  
Zarrina Umarova
Keyword(s):  
Natural Resources ◽  
20Th Century ◽  
21St Century ◽  
Transitional Period ◽  
Early 20Th Century ◽  
Long Period ◽  
Folk Traditions ◽  
History Of ◽  
The Republic ◽  
Characteristic Features

The paper identifies and analyzes the characteristic features of the development of Tajikjewelry art in the late 20th - early 21st centuries. The author believes that at this time, after a long period of oblivion, there is a marked way to restoration of many lost and nearly forgotten folk traditions in Tajik jewelry art. This period of time can be distinguished as a transitional period in the history of Tajik jewelry art development. This issue carries a significant value in the history of Tajikistan because the jewelry art in the period from the 80ies ofthe 20th century to the early 20th century was previously not subjected to a dedicated study, which results in certain gaps in the research of modern Tajik jewelry art. Studying the characteristics of the development of jewelry art at the turn of the 21st century and of the problems faced by master jewelers (zargars) at that time will aid in the future to identify the most efficient ways of developing this industry and facilitate its becoming one of the export-oriented areas, taking into account that the Republic of Tajikistan possesses all the necessary natural resources.

A Study on Partial Replacement of Plastics in Paver Blocks

2019 ◽  
Vol 1 (6) ◽  
pp. 249-252
Author(s):  
Dhivya Bharathi S ◽  
Mounishica Navarathinam ◽  
Pavithra A
Keyword(s):  
Natural Resources ◽  
Environmental Degradation ◽  
Construction Materials ◽  
Partial Replacement ◽  
Long Period ◽  
The Past ◽  
Plastic Wastes

The use of plastics in the current busy world has increased multiple times in the past few years. Many forthcoming industries and enterprises (business companies and organizations) produce more varieties of plastic. The inappropriate way of disposing these plastics will result these detrimental compounds to pollute and degrade the environment by getting mixed with it. The intermolecular bonds that constitute plastics are designed in such a way that it can neither get corroded nor decomposed. In order to succeed this issue we have to find an effective way to dispose plastics. In this project we have used recycled plastic wastes to construct paver blocks. This material also has few advantages like they are extremely durable and hard to reject (them last for a long period of time), it doesn’t have rusting properties and are non-soluble in water. These properties together makes plastic highly durable. The main aim of this project is to reduce the dependency level of construction materials on natural resources which are on verge of getting exhausted and also to diminish the environmental degradation caused by the utilization of plastics. We also used IOT sensors in this project to detect the temperature and alert the users regarding the condition of plastics used inside the paver blocks. This will allow the users to take proper measures and repair it accordingly.

scholarly journals The Mass–Ratio Distribution of Short–Period Binaries

1992 ◽  
Vol 135 ◽  
pp. 119-126 ◽  
Author(s):  
T. Mazeh ◽  
D. Goldberg
Keyword(s):  
Numerical Simulations ◽  
Mass Distribution ◽  
Classical Method ◽  
Spectroscopic Binaries ◽  
Mass Ratio ◽  
Linear Mass ◽  
Ratio Distribution ◽  
Long Period ◽  
Short Period ◽  
True Mass

Abstract We present a new algorithm to derive the mass-ratio distribution of an observed sample of spectroscopic binaries. The algorithm replaces each binary of unknown inclination by an ensemble of virtual systems with a distribution of inclinations. We show that contrary to a widely held assumption the orientations of each virtual ensemble should not be distributed randomly in space. A few iterations are needed to find the true mass-ratio distribution. Numerical simulations clearly demonstrate the advantage of the new algorithm over the classical method. We have applied the new algorithm to the recent large sample of G-dwarf spectroscopic binaries, and got a uniform or perhaps a slightly rising linear mass-ratio distribution. This result suggests that the mass-ratio distributions of short-period and long-period binaries are substantially different. It also indicates that the mass distribution of the secondary stars is not the same as that of the single stars.

scholarly journals The performance of Free Aceh Movement (GAM) as a Ruling Government 2007-2012

2015 ◽  
Vol 3 (1) ◽  
pp. 17
Author(s):  
Sofia Trisni
Keyword(s):  
Natural Resources ◽  
Central Government ◽  
Long Period ◽  
Free Aceh Movement

Aceh is part of Indonesia’s archipelago which well known for its rich natural resources.  These rich natural resources then lead into Acehnese dissatisfactory of the sharing proportion between Aceh and Jakarta which in turn lead into Aceh and Central government long conflict. After a long period of struggle, Acehnese finally manage to get their demand: having a special autonomy which entitles Aceh more freedom and share of natural resources. This article examines the performance of GAM as a ruling government in Aceh since 2007-12

On nearly-commensurable periods in the restricted problem of three bodies, with calculations of the long-period variations in the interior 2:1 case

1966 ◽  
Vol 25 ◽  
pp. 197-222 ◽  
Author(s):  
P. J. Message
Keyword(s):  
Periodic Solution ◽  
Periodic Solutions ◽  
Large Amplitude ◽  
Restricted Problem ◽  
Small Amplitude ◽  
Minor Planets ◽  
Long Period ◽  
Numerical Integrations ◽  
Period Variations ◽  
The Mean

An analytical discussion of that case of motion in the restricted problem, in which the mean motions of the infinitesimal, and smaller-massed, bodies about the larger one are nearly in the ratio of two small integers displays the existence of a series of periodic solutions which, for commensurabilities of the typep+ 1:p, includes solutions of Poincaré'sdeuxième sortewhen the commensurability is very close, and of thepremière sortewhen it is less close. A linear treatment of the long-period variations of the elements, valid for motions in which the elements remain close to a particular periodic solution of this type, shows the continuity of near-commensurable motion with other motion, and some of the properties of long-period librations of small amplitude.To extend the investigation to other types of motion near commensurability, numerical integrations of the equations for the long-period variations of the elements were carried out for the 2:1 interior case (of which the planet 108 “Hecuba” is an example) to survey those motions in which the eccentricity takes values less than 0·1. An investigation of the effect of the large amplitude perturbations near commensurability on a distribution of minor planets, which is originally uniform over mean motion, shows a “draining off” effect from the vicinity of exact commensurability of a magnitude large enough to account for the observed gap in the distribution at the 2:1 commensurability.

Discussion following the presentation by F. Deubner

1977 ◽  
Vol 36 ◽  
pp. 69-74
Keyword(s):  
List Type ◽  
The Sun ◽  
Type Number ◽  
Harmonic Motion ◽  
Locally Excited ◽  
Long Period ◽  
Coherent Wave ◽  
Short Period ◽  
Global Modes

The discussion was separated into 3 different topics according to the separation made by the reviewer between the different periods of waves observed in the sun :1) global modes (long period oscillations) with predominantly radial harmonic motion.2) modes with large coherent - wave systems but not necessarily global excitation (300 s oscillation).3) locally excited - short period waves.

The growth of mica polytypes as studied by conventional and high-resolution TEM

1983 ◽  
Vol 41 ◽  
pp. 174-177
Author(s):  
A. Baronnet ◽  
M. Amouric
Keyword(s):  
Water Pressure ◽  
Point Of View ◽  
Temperature Fields ◽  
Natural Occurrence ◽  
Growth Mechanisms ◽  
Long Period ◽  
High Resolution Tem ◽  
Layer Stacking ◽  
Experimental Works ◽  
Potential Use

The origin of mica polytypes has long been a challenging problem for crystal- lographers, mineralogists and petrologists. From the petrological point of view, interest in this field arose from the potential use of layer stacking data to furnish further informations about equilibrium and/or kinetic conditions prevailing during the crystallization of the widespread mica-bearing rocks. From the compilation of previous experimental works dealing with the occurrence domains of the various mica "polymorphs" (1Mr, 1M, 2M1, 2M2 and 3T) within water-pressure vs temperature fields, it became clear that most of these modifications should be considered as metastable for a fixed mica species. Furthermore, the natural occurrence of long-period (or complex) polytypes could not be accounted for by phase considerations. This highlighted the need of a more detailed kinetic approach of the problem and, in particular, of the role growth mechanisms of basal faces could play in this crystallographic phenomenon.

TEM Analysis of Long-Period Polytypes in SiC—S

1976 ◽  
Vol 34 ◽  
pp. 630-631
Author(s):  
S. Shinozaki ◽  
J. W. Sprys
Keyword(s):  
Electron Diffraction ◽  
Isothermal Annealing ◽  
Tem Analysis ◽  
Long Period ◽  
Transmission Electron ◽  
Average Grain Size ◽  
High Resolution Tem ◽  
Structural Lattice ◽  
The Stability ◽  
Continuous Curves

In reaction sintered SiC (∽ 5um average grain size), about 15% of the grains were found to have long-period structures, which were identifiable by transmission electron microscopy (TEM). In order to investigate the stability of the long-period polytypes at high temperature, crystal structures as well as microstructural changes in the long-period polytypes were analyzed as a function of time in isothermal annealing.Each polytype was analyzed by two methods: (1) Electron diffraction, and (2) Electron micrograph analysis. Fig. 1 shows microdensitometer traces of ED patterns (continuous curves) and calculated intensities (vertical lines) along 10.l row for 6H and 84R (Ramsdell notation). Intensity distributions were calculated based on the Zhdanov notation of (33) for 6H and [ (33)3 (32)2 ]3 for 84R. Because of the dynamical effect in electron diffraction, the observed intensities do not exactly coincide with those intensities obtained by structure factor calculations. Fig. 2 shows the high resolution TEM micrographs, where the striped patterns correspond to direct resolution of the structural lattice periodicities of 6H and 84R structures and the spacings shown in the figures are as expected for those structures.

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