scholarly journals Processing method development of control low-frequency signals for the intellectual trainer

2015 ◽  
pp. 695-700
Author(s):  
Yu.G. Tabakov
Keyword(s):  
Method Development ◽  
Low Frequency ◽  
Processing Method

scholarly journals Selenium in wastewater: fast analysis method development and advanced oxidation treatment applications

2019 ◽  
Vol 79 (5) ◽  
pp. 842-849 ◽  
Author(s):  
Dipti Prakash Mohapatra ◽  
Deepak M. Kirpalani
Keyword(s):  
Malachite Green ◽  
Method Development ◽  
Limit Of Detection ◽  
Low Frequency ◽  
High Mobility ◽  
Advanced Oxidation ◽  
Natural Ecosystems ◽  
Fast Analysis ◽  
Monitoring And Enforcement ◽  
Selenium Removal

Abstract Selenium, a ubiquitous non-metal in nature, is potentially toxic to natural ecosystems due to its bioaccumulation potential. Due to increased monitoring and enforcement of selenium regulations, the need to be able to measure and treat selenium efficiently has taken on an increased importance. The principal aqueous forms of inorganic selenium are selenite (Se(IV)) and selenate (Se(VI)). Selenate, due to its high mobility and lack of affinity to conventional adsorbents, is typically much more difficult to treat and remove. To address both measurement and removal, an analytical method is reported for quantification of selenium in wastewater (WW) using UV-Vis spectrophotometer followed by removal studies using advanced oxidation processes (AOPs). Malachite green and azure blue were selected for colorimetric analysis using UV-Vis. Malachite green indicator showed the best results for analysis. The reported UV-Vis method was applied to establish the effect of AOPs on selenium removal. It was noted that all of the AOP treated samples showed removal of selenium and it was established that the UV-Vis method has a lower limit of detection at 2 mg/L. Further, through this study, it was found that the chemical cavitation yield and selenium removal efficiency peaked at low frequency ultrasound of 40 kHz.

Five-Year Achievements of Volcano Program Promotion Panel

2020 ◽  
Vol 15 (2) ◽  
pp. 106-111
Author(s):  
Takahiro Ohkura ◽  
Kenji Nogami ◽  
◽  
Keyword(s):  
Volcanic Activity ◽  
Volcanic Eruption ◽  
Large Scale ◽  
Method Development ◽  
Low Frequency ◽  
Observation System ◽  
Event Tree ◽  
Volcanic Event ◽  
System Improvement ◽  
Observation Method

To mitigate a volcanic eruption disaster, it is important to forecast the transition of the disaster, which depends on the stage of the volcanic phenomena, in addition to forecasting the site, scale, and time of the volcanic activities. To make such forecasts, it is critical to elucidate the evolution of volcanic activity. Accordingly, the Volcano Program Promotion Panel has set the prioritized target as “to forecast volcanic eruption as a cause of disaster by clarifying the branching conditions and theories of volcanic activity and improving volcanic event tree.” The panel promoted a five-year study on the elucidation of volcanic phenomena, including low-frequency and large-scale ones, status of volcanic eruption fields, volcanic eruption modeling, observation method development, and observation system improvement. In this paper, an outline of the main results of this five-year study is presented.

scholarly journals MSnbase, efficient and elegant R-based processing and visualisation of raw mass spectrometry data

2020 ◽  
Author(s):  
Laurent Gatto ◽  
Sebastian Gibb ◽  
Johannes Rainer
Keyword(s):  
Mass Spectrometry ◽  
Data Processing ◽  
Method Development ◽  
Processing Method ◽  
Mass Spectrometry Data ◽  
Bioconductor Package ◽  
Commodity Hardware ◽  
Data Processing Method

AbstractWe present version 2 of the MSnbase R/Bioconductor package. MSnbase provides infrastructure for the manipulation, processing and visualisation of mass spectrometry data. We focus on the new on-disk infrastructure, that allows the handling of large raw mass spectrometry experiments on commodity hardware and illustrate how the package is used for elegant data processing, method development, and visualisation.

A Study on the Fine Structure of the Lateral Line Organ of the Sea Eel

1973 ◽  
Vol 31 ◽  
pp. 648-649
Author(s):  
K. Hama
Keyword(s):  
Fine Structure ◽  
Electron Microscope ◽  
Lateral Line ◽  
Low Frequency ◽  
Sensory Cells ◽  
Apical Surface ◽  
Voltage Electron ◽  
Sensory Epithelia ◽  
Low Frequency Vibration ◽  
Transmission Electron

The lateral line organs of the sea eel consist of canal and pit organs which are different in function. The former is a low frequency vibration detector whereas the latter functions as an ion receptor as well as a mechano receptor.The fine structure of the sensory epithelia of both organs were studied by means of ordinary transmission electron microscope, high voltage electron microscope and of surface scanning electron microscope.The sensory cells of the canal organ are polarized in front-caudal direction and those of the pit organ are polarized in dorso-ventral direction. The sensory epithelia of both organs have thinner surface coats compared to the surrounding ordinary epithelial cells, which have very thick fuzzy coatings on the apical surface.

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