Some factors that could have affected the experiments end result could have been through measuring the all the reactants and equipment their might have been an error somewhere there. Another factor that could have been is that the vinegar was a lower concentrated acetic acid and could have other components in it as well which could have ruined the end measurement of the final product by getting a heavier measurement that actually
Plastic shrinkage crack may not affect the strength of structure but will ruin the appearance of the structure and the crack to full depth may allow water to penetrate it. Figure 9. Plastic Shrinkage Crack Figure 9 is a representation of plastic shrinkage crack where crack propagation is highly evident. There are several ways to minimize this crack such as in hot weather, lower the temperature of the fresh concrete by using chilled mixing water or replacing some of this water with crushed ice. Covering the concreted area to avoid excess evaporation or proper curing can help reduce this crack formation.
Arsenate wastes energy by the uncoupling phosphotransfer reaction so its very POISONOUS. However, glycolysis still proceeds. Arsenate can then also inhibit the conversion of pyruvate into acetyl-CoA, blocking the Krebs cycle and therefore resulting in further loss of ATP.
These proved that chocolate has no effect on facial breakouts. In essence, it is not chocolate, per se, that hurts your complexion but the sugars and fat that it often contains that actually do the damage. From this, scientists were led to discover vitamins and minerals that could probably help. The Islander Diet Did it ever cross your mind why those who live in the Pacific Islands do not suffer from acne even during their puberty? To answer this wonderment, try comparing the Western diet with the Pacific Islands diet – you are bound to find significant differences.
One error that could have affected the percent yield is not filtering out all of the liquid from the filter paper in the funnel before setting it off to dry. This would have increased the final mass of the solid, not making it accurate. To stop this from happening again, the liquid could be drained more thoroughly until it fully stops dripping into the Erlenmeyer flask. Another error that could have affected the percent yield is the amount of trials performed. This would have made the results less accurate and made any errors change the final results even more.
Loss of C=C bond at third and fourth position increase the potency to 3-10 overlap. Substitution at position 4,5 or 8 with alkyl groups ordinarily lessens diuretic action and position 2 can tolerate a small alkyl group such as -CH3.4,5 The mechanism of action of thiazide is not fully understood but they act by inhibition of NaCl reabsorption in the cortical portion of the thick ascending limb of loop of Henle & Distal tubule and also inhibit electroneutral Na & Cl co-transport system. they are rapidly absorbed orally and have volume of distribution equal or greater than the body weight. They are strongly bound to plasma proteins so most of them are not metabolized but excreted as they are in urine as chlorothiazide and hydrochlorothiazide, but benzthiazide, bendroflumethazole and polythiazide are extensively metabolised.1,2The onset of most thiazides occurs after 2-3 hours. they have half life time nearly 8-12 hours permitting one dose per day.4,6 Thiazide diuretics were available at the end of 1950 when they had acceptable adverse effect.
Bad breath is a sign of poor dental hygiene No one likes bad breath - especially people that deal with chronic bad breath.The condition can decrease self-esteem and the misconception is that it’s related to poor dental hygiene. Even someone that brushes twice a day and flosses can suffer the condition because it caused by an abnormality in your dental flora. Halitosis (bad breath) can be caused by periodontal disease, diabetes, hepatitis, or even liver diseases. Your dentist can help you treat this embarrassing problem. Alcohol - based mouthwash is most effective Just because you feel it tingling, doesn’t mean it’s working.
These conditions may denature the enzyme, decreasing its rate of reaction. A conformational change to the activity site of an enzyme will cause the activity of the enzyme to decline significantly. This is because substrate a change in the conformational of the active site of an enzyme prevents the substrate from binding to the enzyme. Sodium chloride affects the charged interactions interactions between the amino acids of the enzyme, deteriorating the active site of the enzyme. However, the enzyme will only deteriorate if there is a high concentration of sodium chloride and not if S3odium chloride is simply present.
Radiographs aren 't effective in diagnosing early caries Enamel/dentin caries prevention Laser fluoride therapy Both laser and fluoride decrease ph >> thus enamel dissolute under very low ph Removal of caries By YAG laser with its antibacterial effect, decontamination of the affected layer will retain its remeneralizing potential. No smear layer>> more retention Laser on enamel before etching>> better marginal seal for composite. Advantage of caries removal by laser(2) Quite>> acceptance by patient Less need for anesthesia Selective absorption by laser for carious surface>>minimal invasive Smear layer free cavity Less thermal increase>> better for pulp chamber Macroroughned surface>> more retention composite Acid etch use can be avoided>> less leakage Disadvantages(2) Expensive High training Need for conventional handpiece to complete work Pit and fissure sealant(1) Pit and fissure sealant must prevent micro leakage so caries will not occur. “If laser was used a delicate interlacing pattern of thin partitions and small knob like expansion will appear on enamel”(1)>>mechanical retention for resin Removal of old restoration(1) Avoided in case of amalgam due to release of mercury vapor. Less traumatic to
In the alkali-catalyzed process, the presence of free fatty acid (greater than 1 mg/g KOH) and water in the oil can cause high amounts of undesirable soap formation, also consuming some quantity of alkaline catalyst and reduces the eﬀectiveness, all of which result in a lower conversion. Therefore, for the feedstock with high free fatty acids, it is essential to have a pretreatment stage before subjecting it to transesteriﬁcation process.  1.2 Pretreatment Process for Waste Cooking Oil Pretreatment of waste cooking oil consists of physical treatment for removing the suspended solid contaminants and chemical treatment processes mainly for deacidiﬁcation. A ﬂow sheet giving the diﬀerent approaches for pretreatment of waste cooking oil is shown in Figure 2. Issariyakul et al.
Based on the assumed contamination of the TLC plate and or capillary tube, it is not possible to tell whether acetaminophen was successfully separated from the Excedrin powder. The Rf values of isolated aspirin and pure aspirin were the same. This demonstrates that the aspirin was successfully separated and is relatively pure. The isolated caffeine sample had a higher Rf value but when viewed under UV light, the markings of isolated caffeine were within the bounds of the pure caffeine, leading to the conclusion that while isolated the caffeine sample was note
I hypothesized that the Conodoguinet Creek is polluted. Through my research I have found that the Conodoguinet Creek is not polluted. One reason it is not polluted is because most of the macroinvertebrates and crustaceans we found in the creek are pollution sensitive creatures. Another reason the creek is not polluted is the level of acidity and alkalinity is 7 which is a healthy number on the pH scale. If the acidity or alkalinity levels were high scientists would have to find a way to neutralize the acid and alkaline.
Meanwhile, on our LB/amp plus DNA petri dish we had a lawn of bacteria and the color was almost clear. Our results for this petri dish mean that the bacteria was not killed by the ampicillin. Next, in the LB/amp minus DNA petri dish we observed very minimal amounts of growth. These results mean that we correctly followed the procedures because this petri dish was not supposed to have growth due to the ampicillin. Our last petri dish was minus DNA and lysogeny broth, in this petri dish we saw 7 colonies of bacteria and there were a light yellow color.
Mineral Oil Mineral Oil, a colorless and odorless substance, is made from petroleum. It is found in many personal care products such as body lotions, soaps, and cosmetics. Mineral oil is used as a preserving agent and works to aid in retaining moisture. It is also very inexpensive, which is why it is popular among companies. Mineral Oil tends to clog pores and also interferes with the skin 's power to expunge toxins.