Magnetic field

For the synthesis of P2, a mixture of 1 (500 mg, 0.553 mmol), 2 (252 mg, 0.553 mmol), 3 (760 mg, 1.105 mmol), tris(o-tolyl)phosphine (P(o-tol)3) (13 mg, 0.044 mmol), and tris(dibenzylidene acetone)dipalladium(0) (Pd2(dba)3) (10 mg, 0.011 mmol) in anhydrous chlorobenzene (21 mL) was charged in a 100 mL round bottom flask. The resulting reaction mixture was heated at 150 °C under stirring for 3 days. Compound (2) (38 mg, 0.083 mmol) was added and stirred at 150 °C for 1 h. To that…

Nuclear energy plays an important in the medical field. Nuclear energy in medicine has been discovered more than 50 years ago and it has been widely-used ever since. The first use of nuclear energy in the medical field is for medical imaging which is a way of creating visual representation of what is going on in our body. Medical imaging began when Wilhem Rontgen discovered x-ray in 1895. However, at that time, the dangers of radiation was not known yet. Fast forward about 20 years later,…

Lasik surgery is the most common type of refractive surgery. The aimed result of the surgery is to refract light rays on the retina without damaging the surrounding cellular cells. Lasik surgery is a procedure that was developed to correct the vision problems of Nearsightedness, Long-sightedness and Astigmatism. Nearsightedness (myopia) is when you can see nearby objects clearly, but distant objects seem blurry. Long-sightedness (hyperopia) is when you can see distant objects clearly, but nearby…

Peripheral artery disease (PAD), also known as arterial occlusive disease, is the obstruction or narrowing of aortic passages--including lumen and its major branches. This blockage interrupts blood flow, usually to the feet and legs. The prognosis will vary depending on the occlusion's site. The symptoms vary depending on the location of the occlusion. For example: in femoral arteries, having pain in the feet, no pulse in ankles and feet, and pallor or coolness in legs are symptoms.…

Objective The purpose of the experiment is to synthesize a compound with an organometallic iron-carbon bond and use infrared spectroscopy to investigate the unconventional sandwich structure. In addition, the experiment aims to understand pi-bonding of an arene ring, use cyclic voltammetry to understand the redox capacity of ferrocene, and explore the barriers between formal inorganic and organic chemistry definitions. Introduction Ferrocene was discovered unintentionally in 1949 when Miller…

Have you ever wondered what the point of sleep was? Or, how we dream? A lot of scientists have researched and tried to determine why we sleep, but a true answer has never been concluded, but a strong theory has stated that us as humans may have evolved from animals that would sleep to put their body in a resting state, to keep them away from harm and to keep their body at a well-rounded temperature throughout the night. All mammals sleep, including marine animals such a platypus and a whale.…

Computed tomography (CT) scanning technology was discovered in 1972 and revolutionized the world of neuroimaging (Sadock, Sadock, & Ruiz, 2014). The CT scan was the first technique to allow the imaging of brain tissue in living patients (Sadock, Sadock, & Ruiz, 2014). During a CT scan, a patient lies on a flat surface, which incrementally moves through what is referred to as a gantry (Sadock, Sadock, & Ruiz, 2014). A gantry is a round shaped structure that contains a motorized x-ray source…

Elfuclana has a unique and interesting history compared to other countries. It is located 132 miles east of the coast of Ellis Island. The founding of this country all began with the Revolution of the Elves, also called The Elfolutionary War. It dates back to December 24th, 2076. It was the day before Christmas in 2076. Santa is, and has always been, the communist dictator of the North Pole. The elves have had to put up with his cruel ruling for long enough. One elf, named Tasol Elfuclan,…

1. Meningioma: (p. 116) a tumor, usually benign, arising from the meningeal (arachnoid, dura matter, pia matter) tissue of the brain. Carcinoma: (p. 116) a cancer arising in the epithelial tissue of the skin or of the lining of the internal organs. Phenomenology: (p. 118) the science of phenomena. This is an approach that concentrates on the study of consciousness and the objects of direct experience. 2. Chapter 8 describes the case of Mrs. S who suffered a stroke in her right cerebra…

What are the different types of adult brain tumors and how are they caused? How are brain tumors treated? Brain tumors are treated by surgery or chemotherapy. Surgery is a very common treatment for primary brain tumors.Sometimes it takes a lot of time to fully take out a brain tumor because not all tumors can be fully removed. Which means that a surgeon will have to attempt to reduce the tumor’s size. How are brain tumors caused? Brain tumors are caused by some genetic diseases which put you…