Exploring the Partial Population Pattern

2003 ◽  
pp. 297-310
Author(s):  
Paul B. Monday
Keyword(s):  
Population Pattern ◽  
Partial Population

scholarly journals New Radical Cation Salts Based on BDH-TTP Donor: Two Stable Molecular Metals with a Magnetic [ReF6]2− Anion and a Semiconductor with a [ReO4]− Anion

2021 ◽  
Vol 7 (4) ◽  
pp. 54
Author(s):  
Nataliya D. Kushch ◽  
Gennady V. Shilov ◽  
Lev I. Buravov ◽  
Eduard B. Yagubskii ◽  
Vladimir N. Zverev ◽  
...  
Keyword(s):  
Radical Cation ◽  
Low Temperatures ◽  
Ac Susceptibility ◽  
Slow Relaxation ◽  
Organic Radical ◽  
Inorganic Anion ◽  
Distinctive Features ◽  
Metallic Character ◽  
Radical Cation Salts ◽  
Partial Population

Three radical cation salts of BDH-TTP with the paramagnetic [ReF6]2− and diamagnetic [ReO4]− anions have been synthesized: κ-(BDH-TTP)4ReF6 (1), κ-(BDH-TTP)4ReF6·4.8H2O (2) and pseudo-κ″-(BDH-TTP)3(ReO4)2 (3). The crystal and band structures, as well as the conducting properties of the salts, have been studied. The structures of the three salts are layered and characterized by alternating κ-(1, 2) and κ″-(3) type organic radical cation layers with inorganic anion sheets. Similar to other κ-salts, the conducting layers in the crystals of 1 and 2 are formed by BDH-TTP dimers. The partial population of positions of Re atoms and disorder in the anionic layers of 1–3 are their distinctive features. Compounds 1 and 2 show the metallic character of conductivity down to low temperatures, while 3 is a semiconductor. The ac susceptibility of crystals 1 was investigated in order to test the possible slow relaxation of magnetization associated with the [ReF6]2− anion.

scholarly journals POPULATION PATTERN AND HOUSEHOLD WASTE MANAGEMENT PRACTICES IN RELATION TO BIO-PHYSICOCHEMICAL WATER QUALITY CHARACTERISTICS IN THE NAGA RIVER

2021 ◽  
pp. 100-105
Author(s):  
Mariel R. Estrella
Keyword(s):  
Water Quality ◽  
Waste Management ◽  
Management Practices ◽  
Water Quality Assessment ◽  
The Philippines ◽  
Household Waste ◽  
Large Household ◽  
Population Pattern ◽  
Waste Management Practices ◽  
Ph Level

Rapid population growth and urbanization over the years has put pressure on natural resources threatening various fragile ecosystems. Naga river in the Philippines became a mute witness to the adverse effects of human activities on its waters. The present study took into account the waste management practices of households along the Naga river to elucidate its relation to the bio-physicochemical state of the river. The comparative analysis of water quality assessment data indicates that there is an observable deterioration of water quality due to its decreased level of Dissolved Oxygen (DO) and above normal pH level. This can be attributed to the continued practice of the households of throwing and discharging 34% and 78% of their solid and liquid wastes, respectively, directly into the river. However, there is a trend of improvement in the Naga river's water quality in terms of other parameters. The study also revealed that the size of built up areas and the household population along the Naga river is not necessarily proportional. Land use and the large household population along the Naga river was found to have higher adverse impacts on the water quality and current state of the Naga river. KEYWORDS: Naga River, water quality, waste management, community survey

scholarly journals POLA POPULASI KUMBANG LUCANID (COLEOPTERA:LUCANIDAE) PADA BERBAGAI TIPE HABITAT DI HUTAN GUNUNG SALAK, JAWA BARAT

2013 ◽  
Vol 13 (1) ◽  
pp. 20
Author(s):  
Roni Koneri
Keyword(s):  
Forest Disturbance ◽  
Light Trap ◽  
Habitat Type ◽  
Forest Types ◽  
Light Traps ◽  
Temporal Dynamic ◽  
Dynamic Pattern ◽  
Beetle Population ◽  
Population Pattern ◽  
Mountain West

POLA POPULASI KUMBANG LUCANID (COLEOPTERA:LUCANIDAE) PADA BERBAGAI TIPE HABITAT DI HUTAN GUNUNG SALAK,  JAWA  BARAT Abstrak Penelitian ini bertujuan untuk mengkaji pola populasi kumbang lucanid di hutan Gunung Salak. Data populasi kumbang lucanid diperoleh dengan menggunakan perangkap lampu (light trap). Penelitian dilaksanakan di kawasan hutan Gunung Salak dan berlangsung dari bulan Mei 2004 sampai Desember 2005. Hasil penelitian menunjukkan bahwa kelimpahan populasi di alam mencapai puncaknya pada bulan April dan Mei. Spesies yang selalu muncul setiap bulan selama pengamatan adalah Cyclomatus canaliculatus, Prosopocoilus astocoides dan Hexarthrius buqueti. Kata kunci: Gunung Salak, kumbang lucanid, populasi. Population Pattern of Lucanid Beetle in Different Habitat Type at Salak Mountain, West Java Absract The objectives of the research were to study temporal dynamic pattern of Lucanid beetle in different habitat type. Research was conducted between May 2004 and December 2005. Beetles were surveyed by using light traps in three different forest types. Results have indicated that temporal dynamic pattern of  Lucanid beetle was affected by forest disturbance level.  Highest number of Lucanid beetles were  recorded in April dan May. Species which always emerge each month during perception is Cyclomatus canaliculatus, Prosopocoilus astocoides and Hexarthrius buqueti. Keywords: Salak mountain, lucanids beetle, population.

scholarly journals Bayesian estimation of partial population continuity using ancient DNA and spatially explicit simulations

2018 ◽  
Vol 11 (9) ◽  
pp. 1642-1655 ◽  
Author(s):  
Nuno Miguel Silva ◽  
Jeremy Rio ◽  
Susanne Kreutzer ◽  
Christina Papageorgopoulou ◽  
Mathias Currat
Keyword(s):  
Bayesian Estimation ◽  
Ancient Dna ◽  
Spatially Explicit ◽  
Population Continuity ◽  
Partial Population

INHOMOGENEITY OF ELECTRON LIQUID AND EFFECTS OF INTERLAYER COUPLING IN GaAs/AlGaAs SUPERLATTICES IN THE REGIME OF THE QUANTUM HALL EFFECT

2007 ◽  
Vol 21 (08n09) ◽  
pp. 1409-1413
Author(s):  
Y. A. PUSEP ◽  
F. E. G. GUIMARÃES ◽  
H. ARAKAKI ◽  
C. A. DE SOUZA ◽  
A. J. CHIQUITO
Keyword(s):  
Hall Effect ◽  
Quantum Hall Effect ◽  
Filling Factor ◽  
Quantum Hall ◽  
Interlayer Coupling ◽  
Integer Quantum Hall Effect ◽  
Weakly Coupled ◽  
Integer Quantum ◽  
Increasing Temperature ◽  
Partial Population

Formation of the electron state with the integer filling factor was studied by magneto-capacitance and magneto-photoluminescence measurements in weakly coupled GaAs/AlGaAs multilayers where quasi-two dimensional electrons revealed the integer Quantum Hall Effect. The disorder modulated compressibility of the quantized Hall phase with the filling factor ν=2 was determined. The incompressible fraction of this phase was shown to rapidly disappear with the increasing temperature. The quantized Hall phase of the weakly coupled multilayers was shown to emit the asymmetrical photoluminescence lines. We demonstrated that the observed asymmetry is caused by a partial population of the extended electron states formed in the quantized Hall conductor phase due to the disorder induced interlayer tunneling.

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