Comparative studies of the persistence of animal mycoplasmas under different environmental conditions

2001 ◽  
Vol 82 (3) ◽  
pp. 223-232 ◽  
Author(s):  
H Nagatomo
Keyword(s):  
Environmental Conditions ◽  
Comparative Studies

scholarly journals Simulations with Australian dragon lizards suggest movement-based signal effectiveness is dependent on display structure and environmental conditions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xue Bian ◽  
Angela Pinilla ◽  
Tom Chandler ◽  
Richard Peters
Keyword(s):  
Research Methods ◽  
Environmental Conditions ◽  
Comparative Studies ◽  
Habitat Structure ◽  
Signal Transmission ◽  
Lizard Species ◽  
Local Adaptations ◽  
Signal Divergence ◽  
Colour Signals ◽  
Optimal Signal

AbstractHabitat-specific characteristics can affect signal transmission such that different habitats dictate the optimal signal. One way to examine how the environment influences signals is by comparing changes in signal effectiveness in different habitats. Examinations of signal effectiveness between different habitats has helped to explain signal divergence/convergence between populations and species using acoustic and colour signals. Although previous research has provided evidence for local adaptations and signal divergence in many species of lizards, comparative studies in movement-based signals are rare due to technical difficulties in quantifying movements in nature and ethical restrictions in translocating animals between habitats. We demonstrate herein that these issues can be addressed using 3D animations, and compared the relative performance of the displays of four Australian lizard species in the habitats of each species under varying environmental conditions. Our simulations show that habitats differentially affect signal performance, and an interaction between display and habitat structure. Interestingly, our results are consistent with the hypothesis that the signal adapted to the noisier environment does not show an advantage in signal effectiveness, but the noisy habitat was detrimental to the performance of all displays. Our study is one of the first studies for movement-based signals that directly compares signal performance in multiple habitats, and our approach has laid the foundation for future investigations in motion ecology that have been intractable to conventional research methods.

scholarly journals Fungal genomes tell a story of ecological adaptations

2014 ◽  
Vol 10 ◽  
pp. 9-17
Author(s):  
Anna Muszewska
Keyword(s):  
Study Design ◽  
Environmental Conditions ◽  
Comparative Studies ◽  
Genomic Sequence ◽  
Plant Biomass ◽  
Complex Compounds ◽  
Cellular Processes ◽  
Ecological Adaptations ◽  
Fungal Genomes ◽  
Global Carbon

One genome enables a fungus to have various lifestyles and strategies depending on environmental conditions and in the presence of specific counterparts. The nature of their interactions with other living and abiotic elements is a consequence of their osmotrophism. The ability to degrade complex compounds and especially plant biomass makes them a key component of the global carbon circulation cycle. Since the first fungal genomic sequence was published in 1996 mycology has benefited from the technolgical progress. The available data create an unprecedented opportunity to perform massive comparative studies with complex study design variants targeted at all cellular processes.

Smooth trajectory planning methods using physical limits

2014 ◽  
Vol 229 (12) ◽  
pp. 2127-2143 ◽  
Author(s):  
An Yong Lee ◽  
Youngjin Choi
Keyword(s):  
Trajectory Planning ◽  
Environmental Conditions ◽  
Comparative Studies ◽  
Polynomial Method ◽  
Motion Trajectory ◽  
Smooth Motion ◽  
Planning Methods ◽  
Cubic Polynomial ◽  
S Curve ◽  
Curve Form

In order for robots to be operated in a variety of environmental conditions, a smooth motion trajectory to goal point is needed in accordance with actuators specifications of the robot. In this paper, a conventional cubic polynomial method for symmetric curve (S-curve) trajectory planning is extended to the smooth (infinitely differentiable and continuous) symmetric and asymmetric curve (AS-curve) trajectory planning derived from a smooth jerk function. In other words, the proposed methods are able to generate the trajectory as S/AS-curve form as well as to satisfy several physical limits such as jerk limit, acceleration limit, and velocity limit. The effectiveness of the proposed methods is shown through comparative studies with existing method.

scholarly journals Comparative Studies on Blood Electrolytes of the Fresh Water Fish, Notopterus notopterus from Three Aquatic Bodies

2015 ◽  
Vol 40 ◽  
pp. 1-5 ◽  
Author(s):  
R.S. Kulkarni
Keyword(s):  
Fresh Water ◽  
Environmental Conditions ◽  
Comparative Studies ◽  
Fresh Water Fish ◽  
Blood Calcium ◽  
Blood Electrolytes ◽  
Water Fish ◽  
Baseline Levels ◽  
Notopterus Notopterus ◽  
Sodium And Potassium

The present study is undertaken to determine baseline levels of blood electrolytes for the fish, N.notopterus collected from three different aquatic bodies situated at different locations around Gulbarga region. The electrolytes such as sodium and potassium levels are having some difference in the fish collected from the three aquatic bodies. The data for blood Sodium 88.49 ± 16.68 mmol/l. in the fish from Bheema River, 101.32 ± 4.17 mmol/l. in the fish from Kagina River, and 87.5 ± 3.41, mmol/l. in the fish from Saradgi Stream., Potassium 14.48 ± 1.14 mmol/l. in the fish from Bheema River, 14.63 ± 1.15 mmol/l. in the fish from Kagina River, 13.19 ± 0.70 mmol/l. in the fish from Saradgi Stream. The blood calcium data are 9.00 ± 0.30 mg/dl. in the fish from Bheema River, 8.69 ± 0.50 mg/dl. in the fish from Kagina River, and 8.39 ± 0.45 mg/dl. in the fish from Saradgi Stream. Based on the results obtained for blood electrolytes, the fish N.notopterus from three aquatic bodies are although healthy and thriving well, the Bheema River provides better environmental conditions.

Vibration Isolator System for Electron Microscope

1990 ◽  
Vol 48 (1) ◽  
pp. 182-183
Author(s):  
K. Ohi ◽  
M. Mizuno ◽  
T. Kasai ◽  
Y. Ohkura ◽  
K. Mizuno ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Magnetic Fields ◽  
Environmental Conditions ◽  
Vibration Isolator ◽  
Air Conditioners ◽  
Vibration Isolators ◽  
Large Size ◽  
Electron Microscopes

In recent years, with electron microscopes coming into wider use, their installation environments do not necessarily give their performance full play. Their environmental conditions include air-conditioners, magnetic fields, and vibrations. We report a jointly developed entirely new vibration isolator which is effective against the vibrations transmitted from the floor.Conventionally, large-sized vibration isolators which need the digging of a pit have been used. These vibration isolators, however, are large present problems of installation and maintenance because of their large-size.Thus, we intended to make a vibration isolator which1) eliminates the need for changing the installation room2) eliminates the need of maintenance and3) are compact in size and easily installable.

Further Comparative Studies on Ascites in Liver and Heart Disease

1950 ◽  
Vol 16 (1) ◽  
pp. 91-103 ◽  
Author(s):  
John A. Layne ◽  
F.R. Schemm ◽  
W.W. Hurst
Keyword(s):  
Heart Disease ◽  
Comparative Studies
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