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katrin2010 [14]
3 years ago
12

Researchers are investigating medication-badsed treatments for symptoms related to Parkinsons diseas, alzheimers diseas, multipl

e sclerosis, and schizophrenia. they hve acquired IRB approval for drug trials and have acces to numerous methods for studying the brain. Explain how each of the following concepts could relate to the sutdy
Double- blind design
Antagonist
Acetylcholine (ACh)
Positron Emission Tomography (PET)
Blood-brain barrier
Myelin sheath
Advanced Placement (AP)
1 answer:
ololo11 [35]3 years ago
3 0

Double-blind design: this is how the study will be conducted. This means that in this study, participants will know which treatments are being applied to each participant. In this case, the researcher can hire a doctor or health professional who can deliver the different treatments to the participants without the researcher and the participants themselves knowing what treatment is being delivered and which participants are not receiving any treatment.

Antagonist: It will be a substance used to establish connections in the participants' neurological receptors, but without activating these receptors and preventing any other substance from activating them.

Acetylcholine: Will be the neurotransmitter tested in treatments, as it is the main neurotransmitter often related to the symptoms of Parkinson's disease, alzheimer's disease, multiple sclerosis and schizophrenia

Positron Emission Tomography (PET): It will allow the visualization of images that will allow the evaluation of the functioning of the neurotransmitters related to each tested treatment.

Blood-brain barrier: It will allow the assessment of the metabolic function of the participants' brain, as it protects the nervous system from toxic and harmful substances. This cerebral metabolic function will be evaluated in relation to each treatment applied.

Myelin sheath: is the protective layer of nerve cells. It is usually damaged in people who have Parkinson's disease, alzheimer's disease, multiple sclerosis and schizophrenia, for this reason, it will allow the assessment of their protection in relation to each treatment tested.

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3 years ago
Critically discuss the effectiveness of Cost-Volume-Profit analysis duly supported with empirical evidence.
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Answer:

Cost-volume-profit (CVP) can be used to determine how changes in costs and volume affect a company's operating income and net income.  CVP analysis requires that all the company's costs, including manufacturing, selling, and administrative costs, be identified as either variable or fixed.

A CVP analysis consists of five basic components that include: volume or level of activity, unit selling price, variable cost per unit, total fixed cost, and sales mix.

From the cost-volume-profit analysis, one can determine the sales quantity needed to break even as well as the sales quantity required to earn a desired profit margin .

For instance, given a fixed costs of $4,000 and contribution margin of $20, it becomes possible to determine the volume of sales in order for the entity to break-even (make no profit or loss).  The break-even point = $4,000/$20 = 200.  This implies that if the entity can sell 200 units with the current level of fixed and variable costs, and selling price, it can make no profit or loss.  If more quantity is sold, then the entity can record some profit, and vice versa.  Management can use the information provided to decide if production of a product or service can be continued or discontinued if it meets or does not meet the profit goal.

But, the CVP analysis is not always accurate.  CVP analysis technique assumes that all costs in the company are completely fixed or completely variable.  Fixed costs are costs that do not change with changes in production, such as rent or insurance costs.   They are not always completely fixed as they may change periodically, then exhibiting a step fixed costs nature, though in the long run, all costs are variable.

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Cost-volume-profit (CVP) analysis is a managerial accounting technique to determine how changes in costs and volume affect a company's operating income and net income.

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Due to the rigidity of  US constitution only,27 amendment could be carried till now. First constitutional amendment was ratified during the year 1791 granting the rights to religion, speech, assembly etc. This was one among the first ten amendment which were called the bill of rights.  

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a = 132 m/s^2

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