An attempt has been made to predict the nature of positive and negative ions up to a level of 50 km. Considerable progress has been made in recent years in the understanding of the mechanism of formation of small ions at ground levels and the altitude profile of ions presented here for the...
aThe cloud-to-ground lightning flash can lower positive (+CG) or negative (-CG) charge, depending on the source of the flash. This can be determined by the polarity of the stroke’s current. Characteristics of negative and positive cloud-to ground flash are summarized as shown in Table 1...
its methods PWM control algorithm to calculate the positive and negative sequence current loop setpoint; before the positive and negative sequence current component of feed forward decoupling control, access control PWM converter given voltage; grid computing and the positive sequence voltage feedforward ...
Observed dust responses to negative Sahel NDVI anomalies and corresponding dry soil anomalies during 1982–2011. a total dust emission (bars: climatology, referring to the left y axis; dots and open circles: significant (p < 0.1 based on Monte Carlo bootstrap test) and insignificant response...
Zhao H, Zhao X, Zhang T (2008) Ground Discriminance on Positive and Negative Processes of Land Desertification in Horqin Sand Land . Journal of Desert Research 28(1) : 8–15Zhao HL, Zhao RL, Zhao XY, Zhang TH (2008) Ground discrimi- nance on positive and negative processes of land ...
The soil samples were incubated for one week with13C-labeled wild oat (Avena fatua) straw powder to simulate plant litter decomposition, along with a12C-labeled straw addition and no straw treatments serving as isotopic control and background, respectively (Fig.1). The overall priming effect wa...
Background and Problem Statement Carbon finance refers to the low-carbon economic investment and financing activities that emerged from the Kyoto Protocol, also known as carbon financing and the buying and selling of carbon materials. It serves financial activities such as direct investment and financin...
delay its transformation into a classical Ph-positive or worse, a BCR-ABL1 kinase increases the levels of reactive oxygen Ph-negative BC?' species leading to the accumulation of oxidized bases and DSBs.58 In addition, BCR-ABL1-positive leukaemia cells acquire more DNA lesions after genotoxic ...
while the true group information was blinded and kept in the system background. The investigators and the patients were blinded to the treatment assignment. All other individuals who were directly involved in the study remained blinded to the treatment assignment until completion of the primary analys...
and Singapore is actively pursuing the standardization of methodologies with the aim to reduce inter-laboratory variability, minimize the rate of false positive and false negative results, increase sensitivity, optimize reagents and procedures, establish a common terminology, and standardize interpretation an...