Indicator: Indicators are often used in titration reactions to signal that the equivalence point pH is reached. The indicators added are weak acids or bases that exhibit different colors based on the pH. An example of an indicator is Phenolphthalein. ...
There is much confusion among cleaning and disinfectant users regarding pH and what it means with respect to a product's cleaning or killing properties, its materials compatibility as well as its rating with regards to its toxicity / hazard profile. The intent is to dispel the...
Describe in some detail a reptile or amphibian example of (a) a far-flung approach to studying a community and (b) a long-term approach to studying a community. 3. What is it about Oklahoma that makes it an ideal place to test hypotheses about species distributions using amphibians and re...
A 'Social Indicator' is defined as a method used in the social sciences to measure poverty, economic hardship, and affluence by assessing direct measures of deprivation such as lack of food, heat, or access to healthcare, as well as material hardships experienced by individuals or households de...
Neuroprostheses have the potential to restore communication to people who cannot speak or type due to paralysis. However, it is unclear if silent attempts to speak can be used to control a communication neuroprosthesis. Here, we translated direct cortica
These two models are useful in their own narrow context, but the models defined by TOGAF and OMG can only answer a limited set of questions. We needed more than these models could provide. For example, neither model is able to recognize the source of multiple competing goals within an enter...
To determine the pH range of an indicator with a given pK_a value, we can follow these steps: 1. Understand the pK_a Value: The pK_a of an indicator is a measure of the acidity of the indicator. In this case, we have pK_a = 4. 2. Identify the pH Range: The pH range fo...
For example, shallow pore-water had NO3− concentrations between 3.38 mg/L and 9.92 mg/L (median, 6.11 mg/L), which were mostly lower than the coexisting shallow groundwater. As shown in Fig. 3, the distribution of major components of pore-water and groundwater in Zone 1 at different...
Especially since the late 1980s, it has been one of the focuses of soil science to use the enzyme activity as a bioactivity indicator of soil contamination. The change in land-use mode imposes a rather evident impact on enzyme activity. For example, the transformation of forest ecosystems to...
Cellular electricity can also be a source of energy in living systems. For example, theelectric eelhas several thousands of specialized cells used to generate electricity (electrocytes), each cell producing ∼0.1 V. The electrocytes in an electric eel are connected in series and can generate...