scholarly journals Construction and Validation of Lake Biwa Basin Simulation Model with Integration of Three Components of Land, Lake Flow, and Lake Ecosystem

2011 ◽  
Vol 34 (9) ◽  
pp. 125-141 ◽  
Author(s):  
Yuichi SATO ◽  
Eiji KOMATSU ◽  
Hideaki NAGARE ◽  
Hiroshi UEHARA ◽  
Takashi YUASA ◽  
...  
Keyword(s):  
Simulation Model ◽  
Lake Biwa ◽  
Lake Ecosystem ◽  
Three Components

Estimation of pollutant loads from urban roadway runoff

2010 ◽  
Vol 61 (2) ◽  
pp. 345-354 ◽  
Author(s):  
K. Wada ◽  
S. Fujii
Keyword(s):  
Organic Carbon ◽  
Simulation Model ◽  
Survey Data ◽  
Field Survey ◽  
Lake Biwa ◽  
Deposition Process ◽  
Sum Of Squares ◽  
Model Parameters ◽  
Nitrogen And Phosphorus ◽  
Pollutant Loads

A simulation model consisting of a deposition process and a wash-off process was proposed to evaluate the pollutant loads from urban roadways, and was verified based on field survey data obtained over a 5-year period in the Lake Biwa watershed. The model parameters were determined by minimizing the total sum of squares of differences between the observed data and simulated ones. By applying this model to all roadways in the watershed, the calculated amounts of CODMn, organic carbon, nitrogen and phosphorus in particulate forms were 15.9, 15.7, 0.88 and 0.15 kg/(km2 ·d), respectively, and those in dissolved forms were 14.1, 12.5, 2.62 and 0.03 kg/(km2 ·d), respectively. From the results, the pollutant loads of CODMn, TN and TP obtained for the Lake Biwa watershed (total roadway area of 98.9 km2) were estimated to be 2,950, 350 and 18 kg/d, respectively.

scholarly journals Observation and Estimation on Evaporation from Lake Biwa and its Utilization to Simulation Model

1988 ◽  
Vol 32 ◽  
pp. 155-160 ◽  
Author(s):  
S. Ikebuchi ◽  
T. Jinnouchi ◽  
H. Okahisa ◽  
A. Ohuto
Keyword(s):  
Simulation Model ◽  
Lake Biwa

scholarly journals Communities of T4-like bacteriophages associated with bacteria in Lake Baikal: diversity and biogeography

PeerJ ◽  
2022 ◽  
Vol 10 ◽  
pp. e12748
Author(s):  
Sergey Anatoljevich Potapov ◽  
Irina Vasilievna Tikhonova ◽  
Andrey Yurjevich Krasnopeev ◽  
Maria Yurjevna Suslova ◽  
Natalia Albertovna Zhuchenko ◽  
...  
Keyword(s):  
Lake Baikal ◽  
Water Samples ◽  
Lake Biwa ◽  
Amino Acid Level ◽  
Amplicon Sequencing ◽  
Lake Ecosystem ◽  
The Pacific ◽  
Close Relationship ◽  
T4 Bacteriophage ◽  
Marine Viruses

Lake Baikal phage communities are important for lake ecosystem functioning. Here we describe the diversity of T4-bacteriophage associated with the bacterial fraction of filtered water samples collected from the pelagic zone, coastal zone and shallow bays. Although the study of the diversity of phages for the g23 gene has been carried out at Lake Baikal for more than ten years, shallow bays that comprise a significant part of the lake’s area have been neglected, and this gene has not previously been studied in the bacterial fraction. Phage communities were probed using amplicon sequencing methods targeting the gene of major capsid protein (g23) and compared phylogenetically across sample locations and with sequences previously retrieved from non-bacterial fractions (<0.2 um) and biofilms (non-fractionated). In this study, we examined six water samples, in which 24 to 74 viral OTUs were obtained. The sequences from shallow bays largely differed from those in the pelagic and coastal samples and formed individual subcluster in the UPGMA tree that was obtained from the comparison of phylogenetic distances of g23 sequence sets from various ecosystems, reflecting differences in viral communities depending on the productivity of various sites of Lake Baikal. According to the RefSeq database, from 58.3 to 73% of sequences of each sample had cultivated closest relatives belonging to cyanophages. In this study, for phylogenetic analysis, we chose the closest relatives not only from the RefSeq and GenBank NR databases but also from two marine and one freshwater viromes: eutrophic Osaka Bay (Japan), oligotrophic area of the Pacific Ocean (Station ALOHA) and mesotrophic and ancient Lake Biwa (Japan), which allowed us to more fully compare the diversity of marine and freshwater phages. The identity with marine sequences at the amino acid level ranged from 35 to 80%, and with the sequences from the viral fraction and bacterial one from Lake Biwa—from 35.3 to 98% and from 33.9 to 89.1%, respectively. Therefore, the sequences from marine viromes had a greater difference than those from freshwater viromes, which may indicate a close relationship between freshwater viruses and differences from marine viruses.

The Jovian ring

1984 ◽  
Vol 75 ◽  
pp. 203-209
Author(s):  
Joseph A. Burns
Keyword(s):  
Equatorial Plane ◽  
Charged Particles ◽  
Dynamical Evolution ◽  
Main Band ◽  
Small Grains ◽  
Three Components

ABSTRACTLying in Jupiter's equatorial plane is a diaphanous ring having little substructure within its three components (main band, faint disk, and halo). Micron-sized grains account for much of the visible ring, but particles of centimeter sizes and larger must also be present to absorb charged particles. Since dynamical evolution times and survival life times are quite short (≲102-3yr) for small grains, the Jovian ring is being continually replenished; probably most of the visible ring is generated by micrometeoroids colliding into unseen parent bodies that reside in the main band.

Novel simulation model for many-body multipole dispersion interactions

1998 ◽  
Vol 94 (3) ◽  
pp. 417-433 ◽  
Author(s):  
MARTIN VAN DER HOEF ◽  
PAUL MADDEN
Keyword(s):  
Simulation Model ◽  
Dispersion Interactions ◽  
Many Body
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