There's this certain charm to In Hyuk's character and how he portrayed it that i just could not see in Sun Ho. And while i do agree that Sun Ho had a better character development throughout the series, I still wouldn't say that Jung Woo was bland and boring though. In other hand, the Captain also relatable. Give up everything (job and money) for something that many people think 'useless'. Maybe that's how love works. He so in love with that cheer squad and become idealistic. The actor expression as Captain also great. He makes me feel what he feel. I love him. At any given instant during the cardiac cycle, all ECG leads analyze the same electrical events but from different angles. This means that ECG leads with similar angles must display similar ECG curves (diagrams). For some purposes (e.g. diagnosis of some arrhythmias) it is not always necessary to analyze all leads, as the diagnosis can often be established by examining fewer leads. On the other hand, for the purpose of diagnosing morphological changes (e.g. myocardial ischemia, ventricular hypertrophy), the ability to do so increasesas the number of leads increases. The 12-lead ECG is a trade-off between sensitivity, specificity, and feasibility. Obviously, having120 leads (which has been tested in several studies on acute myocardial infarction) would improve sensitivity for manyconditions, at the expense of specificity and certainly feasibility. Subsequent chapters will clarify why multiple leads are required to diagnose many morphological changes. The ECG paper Don't work under them when equipment (eg ladders, a crane jib, a tipper-lorry body or a scaffold pole) could come within a minimum of 6 metres of a power line without getting advice.

The lead analog of the simplest organic compound, methane, is plumbane. Plumbane may be obtained in a reaction between metallic lead and atomic hydrogen. [92] Two simple derivatives, tetramethyllead and tetraethyllead, are the best-known organolead compounds. These compounds are relatively stable: tetraethyllead only starts to decompose if heated [93] or if exposed to sunlight or ultraviolet light. [94] [j] With sodium metal, lead readily forms an equimolar alloy that reacts with alkyl halides to form organometallic compounds such as tetraethyllead. [95] The oxidizing nature of many organolead compounds is usefully exploited: lead tetraacetate is an important laboratory reagent for oxidation in organic synthesis. [96] Tetraethyllead, once added to gasoline, was produced in larger quantities than any other organometallic compound. [91] Other organolead compounds are less chemically stable. [90] For many organic compounds, a lead analog does not exist. [92] Origin and occurrence [ edit ] Solar System abundances [97] AtomicYou must make sure electrical equipment and installations are maintained to prevent danger, so far as reasonably practicable. This means balancing the level of risk against the measures needed to control the real risk in terms of money, time or trouble. There is a relatively large difference in the electronegativity of lead(II) at 1.87 and lead(IV) at 2.33. This difference marks the reversal in the trend of increasing stability of the +4 oxidation state going down the carbon group; tin, by comparison, has values of 1.80 in the +2 oxidation state and 1.96 in the +4 state. [61] Lead(II) [ edit ] Lead(II) oxide The mass of an atom relative to that of carbon-12. This is approximately the sum of the number of protons and neutrons in the nucleus. Where more than one isotope exists, the value given is the abundance weighted average.

Lead from pipework can dissolve into the water whilst it stands in the pipe. Therefore, if you have lead pipework, the chances are there will be some lead in your drinking water. The concentration of lead may depend on the following: Lead commonly reacts with heavier chalcogens. Lead sulfide is a semiconductor, a photoconductor, and an extremely sensitive infrared radiation detector. The other two chalcogenides, lead selenide and lead telluride, are likewise photoconducting. They are unusual in that their color becomes lighter going down the group. [68] Lead and oxygen in a tetragonal unit cell of lead(II,IV) oxide Considering lead I the electrode on the right arm serves as the reference, whereas the electrode on the leftarm serves as the exploring electrode. This means that a vector moving from right to left should yield a positive deflection in lead I. Note that Lead I defines 0° in the frontal plane ( Figure 18, the coordinate system in the upper panel). This also means that lead I “views” the heart from an angle of 0°. In clinical practice, it is typically expressed as iflead I “views the lateral wall of the left ventricle”. The same principles apply to lead II and lead III. Ep.9 will air Tuesday, November 8, 2022 due to broadcasting of a Baseball Korea Series game on Monday, November 7, 2022. The percentage of the world reserves located in the country with the largest reserves. The higher the value, the larger risk there is to supply.

Formation

classified on the basis of how they are formed. Lead is produced mainly from three types of deposits: Because of its density and ability to absorb vibration, lead also makes an excellent shield against different types of harmful radiation, such as those found in X-ray machines and nuclear reactors, according to Jefferson Lab. Lead is also still used in some bullets and ammunition. Leaded gasoline You’ll be responsible for disconnecting your old branch pipe, which may involve crossing your neighbour’s property. Make sure you have permission to do this before you start any work.