objective: the current study was undertaken to examine the bactericide effects of atmospheric plasma produced by flat and comb electrodes on e.coli. materials and methods: dc (20 w) and ac (500 w) power supplies, flat and comb electrodes, insulator and oxygen gas were used to produce atmospheric plasma. bactericide effects of the atmospheric plasma were studied on e.coli on sterilized plate pla...

The impact of regional-scale neutral atmospheric waves has been demonstrated to have profound effects on the ionosphere, but circumstances under which they generate ionospheric disturbances and seed plasma instabilities are not well understood. Neutral vary from infrasonic <20 Hz gravity with periods order 10 min, for simplicity, hereafter combined common term Acoustic Gravity Waves (AGW...

1 Introduction 1.1 Active versus passive Consider a precision structure subjected to varying thermal conditions; unless carefully designed, it will distort as a result of the thermal gradients. One way to prevent this is to build the structure from a thermally stable composite material; this is the passive approach. An alternative way is to use a set of actuators and sensors connected by a feed...

Forests contain a majority of the aboveground carbon (C) found in ecosystems, and understanding biomass lost from disturbance is essential to improve our C-cycle knowledge. Our study region in the Wisconsin and Minnesota Laurentian Forest had a strong decline in Normalized Difference Vegetation Index (NDVI) from 1982 to 2007, observed with the National Ocean and Atmospheric Administration’s (NO...

Abstract On January 15, 2022, we observed various unusual atmospheric wave events over South America: Atmospheric pressure waves (Lamb mode) around 12:30 to 17:30 UT, tsunamis along the Chilean coast at 17:00 19:00 and ionospheric disturbances between 11:30 20:00 UT. We understand that these were generated by Tonga volcanic eruption occurred (20.55°S, 175.39°W) in Pacific Ocean 04:15 Several tr...

Recently tillage manufacturers have been promoting vertical tillage systems claiming that their use can overcome production limitations associated with no-till while maintaining sufficient residue cover to provide erosion protection. Vertical tillage refers to systems where soil disturbance is confined to soil movement mostly in the upward direction and/or confined to a slot or strip where the ...

A leading idea about how disturbances and other environmental fluctuations affect species diversity is the intermediate disturbance hypothesis (IDH). The IDH states that diversity of competing species is, or should be expected to be, maximized at intermediate frequencies and/or intensities of disturbance or environmental change. I argue that the IDH has been refuted on both empirical and theore...

Abstract The Chinese Meridian Project (CMP) is devoted to establishing a comprehensive ground-based monitoring network for China’s space weather research. CMP major national science and technology infrastructure project with the participation of more than 10 research institutions universities led by National Space Science Center Academy Sciences. planned be constructed in two phases: phases I I...