By V. Koraz. Rochester College. 2019.
But he who will not allow himself to be convinced of this and who will not kamagra super 160 mg overnight delivery erectile dysfunction funny images, therefore order kamagra super 160 mg online impotence 10, imitate what I now teach after many yearsÕ trial and experience (and what does the physician risk buy kamagra super 160 mg mastercard erectile dysfunction cleveland clinic, if he imitates it exactly? It seemed to me my duty to publish the great truths to the world that needs them generic kamagra super 160mg on line icd 9 code for erectile dysfunction due to diabetes, untroubled as to whether people can compel themselves to follow them exactly or not. If it is not done with exactness, let no one boast to have imitated me, nor expect a good result. Do we refuse to imitate any operation until the wonderful forces of nature on which the result is based are clearly brought before our eyes and made comprehensible even to a child? Would it not be silly to refuse to strike sparks from the stone and flint, because we cannot comprehend how so much combined caloric can be in these bodies, or how this can be drawn out by rubbing or striking, so that the particles of steel which are rubbed off by the stroke of the hard stone are melted, and, as glowing little balls, cause the tinder to catch fire? And yet we strike fire with it, without understanding or comprehending this miracle of the inexhaustible caloric hidden in the cold steel, or the possibility of calling it out with a frictional stroke. Again, it would be just as silly as if we should refuse to learn to write, because we cannot comprehend how one man can communicate his thought to another through pen, ink, and paper - and yet we communicate our thoughts to a friend in a letter without either being able or desirous of comprehending this psychico-physical miracle! Why, then, should we hesitate to conquer and heal the bitterest foes of the life of our fellowman, the Chronic diseases, in the stated way, which, punctually followed, is the best possible method, because we do not see how these cures are effected? Another antipsoric remedy which may be ever so useful, but is prescribed too early and before the cessation of the action of the present remedy, or a new dose of the same remedy which is still usefully acting, can in no case replace the good effect which has been lost through the interruption of the complete action of the preceding remedy, which was acting usefully, and which can hardly be again replaced. It is a fundamental rule in the treatment of chronic diseases: To let the action of the remedy, selected in a mode homoeopathically appropriate to the case of disease which has been carefully investigated as to its symptoms, come to an undisturbed conclusion, so long as it visibly advances the care and the while improvement still perceptibly progresses. This method forbids any new prescription, any interruption by another medicine and forbids as well the immediate repetition of the same remedy. Nor can there be anything more desirable for the physician than to see the improvement of the patient proceed to its completion unhindered and perceptibly. There are not a few cases, where the practiced careful Homoeopath sees a single dose of his remedy, selected so as to be perfectly homoeopathic, even in a very severe chronic disease, continue uninterruptedly to diminish the ailment for several weeks, yea, months, up to recovery; a thing which could not have been expected better in any other way, and could not have been effected by treating with several doses or with several medicines. To make the possibility of this process in some way intelligible, we may assume, what is not very unlikely, that an antipsoric remedy selected most accurately according to homoeopathic principles, even in the smallest dose of a high or the highest potency can manifest so long- continued a curative force, and at last cure, probably, only by means of a certain infection with a very similar medicinal disease which overpowers the original disease, by the process of nature itself, according to which (Organon, ¤ 5, Fifth Edition,) two diseases which are different, indeed, in their kind but very similar in their manifestations and effects, as also in the ailments and symptoms caused by it, when they meet together in the organism, the stronger disease (which is always the one caused by the medicine, ¤33, ibid. In this case every new medicine and also a new dose of the same medicine, would interrupt the work of improvement and cause new ailments, an interference which often cannot be repaired for a long time. Yet when a sudden great and striking improvement of a tedious great ailment follows immediately on the first dose of a medicine, there justly arises much suspicion that the remedy has only acted palliatively, and therefore must never be given again, even after the intervention of several others remedies. Nevertheless there are cases which make an exception to the rule, but which not every beginner should risk finding out. We may declare it once, that the practice of late, which has even been recommended in public journals of giving the patient several doses of the same medicine to take with him, so that he may take them himself at certain intervals, without considering whether this repetition may affect him injuriously, seems to show a negligent empiricism, and to be unworthy of a homoeopathic physician, who should not allow a new dose of a medicine to be taken or given without convincing himself in every case beforehand as to its usefulness. This is rare in chronic diseases, but in acute diseases and in chronic diseases that rise into an acute state it is frequently the case. It is only then, as a practiced observer may recognize - when the peculiar symptoms of the disease to be treated, after fourteen, ten, seven, and even fewer days, visibly cease to diminish, so that the improvement manifestly has come to a stop, without any disturbance of the mind and without the appearance of any new troublesome symptoms, so that the former medicine would still be perfectly homoeopathically suitable, only then, if say, is it useful, and probably necessary to give a dose of the same medicine of a similarly small amount, but most safely in a different degree of dynamic potency. To adduce an example: a freshly arisen eruption of itch belongs to those diseases which might soonest permit the repetition of the dose (sulphur), and which does permit it the more frequently, the sooner after the infection the itch is received for treatment, as it then approaches the nature of an acute disorder, and demands its remedies in more frequent doses than when it has been standing on the skin for some time. But this repetition should be permitted only when the preceding dose has largely exhausted its action (after six, eight or ten days), and the dose should be just as small as the preceding one, and be given in a different potency. Nevertheless it is in such a case often serviceable, in answer to a slight change of symptoms, to interpose between the doses of pure sulphur, a small dose of Hepar sulphuris calcareum. This also should be given in various potencies, if several doses should be needed from time to time. Often also, according to circumstances, a dose of Nux voinica (x) or one of mercury (x)** may be used between. A dose of medicine may also have been suddenly counteracted and annihilated by a grave error in the regimen of the patient, when perhaps a dose of the former serviceable medicine might again be given with the modification mentioned above. Thereby the remedy seeing to take a deeper hold on the organism and hasten the restoration in patients who are vigorous and not too sensitive. Indeed it is hardly ever needed in chronic diseases, as we have a goodly supply of antipsoric remedies at our disposal, so that as soon as one well selected remedy has completed its action, and a change of symptoms, i. Nevertheless in very tedious and complex cases, which are mostly such as have been mismanaged by allopathic treatment, it is nearly always necessary to give again from time to time during the treatment, a dose of Sulphur or of Hepar (according to the symptoms), even to the patients who have been before dosed with large allopathic doses of Sulphur and with sulphur-baths; but then only after a previous dose of Mercury (x). Where, as is usually the case in chronic diseases, various antipsoric remedies are necessary, the more frequent sudden change of them is a sign that the physician has selected neither the one nor the other in an appropriately homoeopathic manner, and had not properly investigated the leading symptoms of the case before prescribing a new remedy. This is a frequent fault into which the homoeopathic physician falls in urgent cases of chronic diseases, but oftener still in acute diseases from overhaste, especially when the patient is a person very dear to his heart. Then the patient naturally falls into such an irritated state that, as we say, no medicine acts, or shows its effect,* yea, so that the power of response in the patient is in danger of flaring up and expiring at the least further dose of medicine. In such a case no further benefit can be had through medicine, but there may be in use a calming mesmeric stroke made from the crown of the head (on which both the extended hands should rest for about a minute) slowly down over the body, passing over the throat, shoulders, arms, hands, knees and legs down over the feet and toes. A dose of homoeopathic medicine may also be moderated and softened by allowing the patient to smell a small pellet moistened with the selected remedy in a high potency, and placed in a vial the mouth of which is held to the nostril of the patient, who draws in only a momentary little whiff of it. By such an inhalation the powers of any potentized medicine may be communicated to the patient in any degree of strength. One or more such medicated pellets, and even those of a larger size may be in the smelling-bottle, and by allowing the patient to take longer or stronger whiffs, the dose may be increased a hundred fold as compared with the smallest first mentioned. The period of action of the power of a potentized medicine taken in by such inhalation and spread over so large a surface (as that of the nostrils and of the lungs) last as long as that of a small massive dose taken through the mouth and the fauces. From this it follows that the nerves possessing merely the sense of touch receive the salutary impression and communicate it unfailingly to the whole nervous system. This method of allowing the patient to be acted upon by smelling the potentized medicine has great advantages in the manifold mishaps which often obstruct and interrupt the treatment of chronic diseases. The antidote to remove these mishaps as quickly as possible the patient may also best receive in greater or less strength through inhalation, which acts most quickly on the nerves and so also affords the most prompt assistance, by which also the continuation of the treatment of the chronic disease is least delayed. When the mishap has thus been obviated most speedily, the antipsoric medicine before taken frequently continues its interrupted action for some time. But the dose of the inhaled medicine must be so apportioned to the morbid interruption that its effect just suffices to extinguish the disadvantage arising from the mishap, without going any deeper or being able to continue its operation any further. I remark here, that I consider the sugar of milk thus used as an invaluable gift of God. So also the homoeopathic physician cannot avoid allowing a new chronic patient to take at least one little powder a day; the difference between this and the many medicinal doses of allopaths is still very great. During this daily taking of a powder, following the numbers, it will be a great benefit to the poor patient who is often intimidated by slanderers of the better medical art, if he does not know whether there is a dose of medicine in every powder, nor again, in which one of them? If he knew the latter, and should know, that to-dayÕs number contains the medicine of which he expects so much, his fancy would often play him an evil trick, and he would imagine that he feels sensations and changes in his body, which do not exist; he would note imaginary symptoms and live in a continual inquietude of mind; but if he daily takes a dose, and daily notices no evil assault on his health, he becomes more equable in disposition (being taught by experience), expects no ill effects, and will then quietly note the changes in his state which are actually present, and therefore can only report the truth to his physician. On this account it is best that he should daily take his powder, without knowing whether there is medicine in all or in a certain powder; thus he will not expect more from to-dayÕs powder than from yesterdayÕs or that of the day before. But this is a vain, utterly unfounded fear, as I have determined by very exact experiments. We may use the crude, pure sugar of milk as a food, and partake of considerable quantities of it, without any change in the health, and so also the triturated sugar. But to destroy at the same time the fear to which utterance has been given by some hypochondriacs, that through a long trituration of the sugar of milk alone, or in the potentizing of medicines, something might rub off from the porcelain mortar (silica), which being potentized by this same trituration would be bound to become strongly acting Silicea( ), I took a new porcelain triturating bowl in which the glazing 1 had been rubbed off, with a new porcelain pestle, and had one hundred grains of pure sugar of milk, divided into portions of thirty-three grains, triturated eighteen times for six minutes at a time and as frequently scraped for four minutes with a porcelain spatula, in order to develop by this three hours strong trituration a medicinal power either of the sugar of milk or of the silica or of both; but my preparation remained as indifferent and unmedicinal as the crude, merely nutritive sugar of milk, of which I convinced myself by experiments on very sensitive persons. This deceptive effect shows that the medicine here acts enantiopathically as an opposite or palliative, and that in the days following we cannot expect anything from this remedy but an aggravation of the original disease. As soon then as this deceptive improvement within a few days begins again to turn to aggravation, it is high time to give either the antidote to this medicine, or, when this cannot be had, a medicine which is homoeopathically more appropriate. In such cases we may also successfully use, for the ailments following after a few days from such an antipathic remedy, one of the remaining medicines from the considerable store laid down in Materia Medica Pura, in the ÒArchiv der homoeopathischen HeilkunstÓ or in the ÒAnnalen. Among the mishaps which disturb the treatment only in a temporary way, I enumerate: overloading the stomach (this may be remedied by hunger, i.
Echocardiography Transthoracic echocardiography is the gold standard diagnostic tool for coarctation of the aorta 160 mg kamagra super with amex erectile dysfunction only with partner. Detailed anatomy of the aortic arch purchase kamagra super 160 mg otc green tea causes erectile dysfunction, the coarctation segment buy kamagra super 160mg overnight delivery erectile dysfunction over 65, and the ductus arteriosus patency is identified by two-dimensional echocardiography 12 Coarctation of the Aorta 163 Fig buy kamagra super 160 mg visa erectile dysfunction caused by hydrochlorothiazide. Color Doppler is used to assess the pressure gradient across the narrow segment, although usually no signifi- cant gradient is detected if the ductus arteriosus is patent, and the direction of blood flow across the ductus arteriosus. Prenatal diagnosis can be made by fetal echocar- diography, although it is technically difficult to evaluate the fetal aortic arch for 164 S. As a result, the diagnosis is usually suspected on the basis of secondary signs that point to abnormal fetal circulation, including right ventricular dilatation, reversal of flow across the aortic arch, and left-to-right shunt across the fetal patent foramen ovale. Cardiac Catheterization Cardiac catheterization is an excellent tool for diagnosing coarctation of the aorta and identifying the extent of the narrowing. However, due to the availability of noninvasive echocardiography as a diagnostic tool, cardiac catheterization is more commonly used as an interventional tool in cases requiring balloon angioplasty of the coarctation segment, stent placement, or stent dilatation. It is also used in cases that require cardiac catheterization for further characterization of or intervention for other associated cardiac lesions. Treatment Treatment of coarctation of the aorta depends on the degree of narrowing and the severity of its presentation. Cases of coarctation that present in the newborn period typically require more invasive interventions than those that present later. Newborn children who present with shock, poor or absent pulses, or differential cyanosis should be started on prostaglandin E2 until ductal-dependent lesions are excluded. Upon confirmation of the diagnosis, prostaglandin should be continued 12 Coarctation of the Aorta 165 until the time for definitive intervention, along with continued medical management of metabolic acidosis and shock. The most common technique is resection of the coar- ctation segment and end-to-end anastomosis via a left lateral thoracotomy incision. An alternative technique is the subclavian flap, which involves using the left subclavian artery to augment the narrow aortic segment and replace resected tissue. Over time, the left upper extremity will be supplied by collateral arteries that develop in lieu of the resected subclavian artery. As a result, the left upper extremity may be smaller than the right upper extremity. Following repair of coarctation, patients may develop varying degrees of reco- arctation and will require life-long cardiology follow-up. If significant recoarcta- tion develops, patients are usually treated by balloon angioplasty with possible stent placement in the coarctation segment. Patients who present later in life with coarctation of the aorta are usually treated by balloon angioplasty with stent placement of the coarctation segment. Stent use is avoided in younger children since the stent may not be possible to dilate to adult aortic arch diameter dimensions. A 10-year-old male patient presents to his pediatrician’s office for a regu- lar checkup. His past medical history is remarkable for occasional headaches, but the patient otherwise has no complaints. Initial vital signs are notable for elevated blood pressure (154/78 mmHg) in the right upper extremity. In general, the patient is well devel- oped and well appearing, in no acute distress. On auscultation, the patient is noted to have a 3/6 systolic murmur in the left infraclavicular area. On recheck of the patient’s triage vital signs, the patient is noted to have a blood pressure of 159/79 mmHg in the upper extremity and 110/60 mmHg in the lower extremity. The differential diagnosis for hypertension includes essential hypertension, endocrine disorders, renovascular disease, or cardiac causes, such as coarctation of the aorta or conditions associated with a large stroke volume; the differential blood pressure between upper and lower extremities strongly suggests coarctation of the aorta. Associated cardiac defects, including bicuspid aortic valve and ventricular septal defect, are not found. The patient undergoes percutaneous balloon angioplasty with stent placement given in his older age at presentation and the ability to dilate implanted stent in the future to adult dimensions. A 10-day-old newborn presents to the emergency room with increased irritability and poor feeding in the last 2–3 days. He was born full term via normal vaginal delivery with no history of complications during pregnancy. He did well in the first week of life, but started to have episodes of intermittent irritability and decreased oral intake in the last 3 days with noticeable ashen discoloration. Mother denies fever, vomiting, diarrhea, or history of illnesses with other family members. However, pulses were markedly diminished in all four extremities with reduced capillary refill (4 s). This infant is demonstrating signs of acute circulatory shock, without respiratory distress. His clinical picture is suggestive of a left heart obstructive lesion, including subaortic obstruction secondary to hypertrophic cardiomyopathy and septal hypertrophy, critical aortic stenosis, coarctation of the aorta, interrupted aortic arch, or hypoplastic left heart syndrome. The patient is emergently started on prostaglandin to maintain patency of the ductus arteriosus resulting in the improvement of systemic perfusion. Given the early onset of symptom in this child, surgery with resection of the coarctation segment and end-to-end anastomosis of the aortic segments is planned once the child is stabilized from metabolic acidosis secondary to shock. His parents are counseled that he will need life-long cardiology follow-up to assess for recurrence of the coarctation and possible future need for balloon dilation of recoarctation of the aorta. Homograft valves (and other biological material) are used for this type of repair. Definition Tetralogy of Fallot is the most common cyanotic congenital heart disease. In addition the anterior displacement of the outflow septum will result in narrowing of the right ventricular outflow tract and pulmonary stenosis. Right ventricular hypertrophy results from obstruction of flow at the right ventricular outflow tract and pulmonary valve. There is, however, a tendency toward genetic or chromosomal abnormalities such as DiGeorge and Down syndromes. There are other, more rare forms which generally vary based on the severity of the pulmonary stenosis. Blood can flow back and forth across this area without restriction which often results in very large, dilated pulmonary arteries. The main focus in this chapter will be on the more common lesion with the four classic components. Pulmonary stenosis causes increased resistance to blood flow into the pulmonary circulation and encourages blood flow from the right ventricle into the overriding aorta. Therefore, blood that would normally flow into the pulmonary artery shunts right to left to the systemic circulation causing reduced pulmonary blood flow and cyanosis. Cyanosis is a product of the right to left shunting at the ventricular level as well as the reduced volume of pulmonary blood flow resulting in less oxygenated blood return to the left atrium. Once born, newborn children are frequently asymptomatic and often do not exhibit cyanosis. The first heart sound is normal while the second heart sound is often single, loud, and accentuated. This is due to the lack of pulmonary valve component of the second heart sound due to its defor- mity. A harsh crescendo–decrescendo systolic ejection murmur is appreciated at the upper left sternal border due to flow of blood across the narrowed pulmonary valve (Fig. Once the diagnosis is made, newborn children with adequate oxygen saturations are often followed in the hospital for at least a few days. In these cases, it is wise to monitor clinical status closely until the ductus arteriosus closes.
All family members should kill these parasites weekly to protect the child with autism cheap kamagra super 160mg with mastercard are erectile dysfunction drugs tax deductible. When lead and parasites are gone consistently for several weeks the pathway to the brain heals and reinfection no longer sends them to the brain and your child can resume a normal life kamagra super 160mg on line impotence 2. For this reason you must do a total cleanup: body generic 160mg kamagra super with mastercard erectile dysfunction 45 year old male, environment generic kamagra super 160 mg overnight delivery erectile dysfunction liver cirrhosis, dental, diet (especially solvents and molds). The mother used no anti nausea medicine during preg- nancy, no caffeine, no alcohol or nicotine, not even a single aspirin. He would take no pills or drops (no herbs even mixed with honey) and our frequency generator method was not discovered at that time. His diet was changed to exclude chicken, eggs, bacon, chips, preservatives and colors in foods, grape jelly and strawberry jam. One month later he had not improved, nor had they been able to kill his parasites with the herbal recipe. The diet change was ex- tremely difficult; he was screaming for his favorite junk food and the whole family was upset over his restrictions. But we encour- aged the mother to stick to her purpose, get a different baby-sitter who would obey her, and to try to get some parasite herbs and thioctic acid (100 mg. The first week the new baby-sitter succeeded in getting him to take thioctic acid. I find, however that it is the outside of the eggshell and the carton that is contaminated. The safe way to handle eggs is to remove them and return the carton to the refrigerator, then wash the eggs and your hands before cracking them. Kirk Peeples, age 5, did not have any words yet but he would point to something and voice M-M-M to mean he wanted it (usually food). Besides going off these food additives he was “desensitized” to them with homeopathic drops by an alternative allergist. But their son could say things and the parents loved each new sound as if it came from a newborn baby. He was infested with both species of Ascaris (there was a pet dog) and was started on the herbal parasite program: just a little less than the adult doses. The immediate conclusion is that bacteria are growing in your digestive tract (stomach and intestines) that should not be allowed to do so. They are likely to be the common enteric (digestive tract) bacteria: Salmonellas, Shigellas, E. Or you can sweep through the whole bacterial and viral range killing all with a frequency generator. The good effects can be felt in an hour, although the last gases may take days to get rid of. If you have an intestinal problem involving digestion or pain, start immediately to boil all dairy foods. The bacteria are in the liver because your liver attempted to strain them out of your blood and lymph in order to kill them with bile. Now, every time the liver lets down bile into the intestine (and stomach), a population of these bacteria goes with it. Help your liver expel its bacterial overload with liver cleanses (page 552) until all the bile is a beautiful bright green. Without the green color of bile added to your intestine, the bowel movement remains light colored, such as tan, yellow or orange! By stopping eating polluted food, killing bacteria and cleansing the liver, digestion becomes normal again. Of course, there must be enough acid in the stomach and di- gestive enzymes produced to make good digestion possible. Persons with a chronic digestion problem may also find they harbor lead, cadmium, or mercury in the intestine! Your body has kept these toxins in the intestine, preventing it from getting into your vital organs. The bad news is that their presence in the intestine could start an intestinal disease. Stomach ache (page 98) and hiatal hernia (page 133) are also digestive problems but are dealt with under pain. One of them had a very sensitive stomach, a poor appetite, wanting nothing but sweets or chips to eat. Their milk was tainted with Salmonellas and Shigellas, setting up throat problems for the father, stomach problems for one child and a pain syndrome for the other child. Boiling all their milk, not bringing raw chicken into the house (Salmonella Source) and stopping eating yogurt and cheese was the solution. There were traces of lead in their tap water and the house air had vanadium in it, announcing a gas leak. Five months later she had cleaned up everything except dentalware and was feeling very good. She still had arthritis and sinus prob- lems but felt so encouraged she had the dental work scheduled. Sven Lippencott, age 4, had been tube fed for several years due to weak stomach action. He had a population of intestinal fluke in his stomach along with arse- nic (pesticide). Sven had wood alcohol, methyl butyl ketone, hexanedione, methylene chloride and toluene buildup making his recovery hopeless. Two new pollutants of the brain, inviting an old parasite to a location it would not normally be, is the explanation. Xylene and toluene are pollutants of popular beverages, de- caffeinated powders and carbonated drinks. At first, the body can detoxify these but with a steady stream of solvent arriving, detoxification slows down and parasites begin to build up in the brain. Common fluke parasites which we eat in undercooked meat and perhaps get from our pets, can now reach the brain and multiply there. Other toxins are also present, such as aluminum, mercury, freon, thallium, cadmium. Buy things made with baking soda (not baking powder), use a plastic salt shaker, buy salt without added aluminum. Drink water from your cold water tap, filtering it with a small pure carbon filter as in a filter pitcher (see Sources). As much as xylene and toluene are brain-seeking solvents, Shigella is a brain-seeking bacterium. The symptoms it causes are not always the same since they depend on the location of infection. Sometimes they cause tremor, sometimes loss of bal- ance, sometimes speech problems. When improvement is lasting you know you have stopped reinfecting from your own bowel or from polluted dairy products. Avoid food molds; ergot especially has strong mental effects (see Moldy Food, page 381). She needed complete care at present but was able to walk (could disappear quickly) and eat.
Inorganic ions are essential for human health in small quantities generic kamagra super 160 mg fast delivery severe erectile dysfunction causes, but in larger quantities they can cause unpleasant taste and odor or even illness discount 160 mg kamagra super with amex erectile dysfunction treatment bangkok. Most community water systems will commonly test for the concentrations of seven inorganic ions: nitrate kamagra super 160mg with amex erectile dysfunction remedies, nitrite cheap kamagra super 160mg overnight delivery broccoli causes erectile dysfunction, fluoride, phosphate, sulfate, chloride, and bromide. Fluoride is actually added to the drinking water in some public water systems to promote dental health. Phosphate, sulfate, chloride, and bromide have little direct effect on health, but high concentrations of inorganic ions can give water a salty or briny taste. Every intake structure must be constructed with consideration for operator safety and for cathodic protection. Interleukin: 2, secreted by activated T cells, stimulates helper T cells to proliferate more rapidly. The hardness of the source water affects the amount of water an ion exchange softener may treat before the bed requires regeneration. If the raw water is pre-chlorinated, there will be black stains on the walls below the water level and a black coating over the top portion of the sand filter bed. When significant levels of dissolved oxygen are present, iron and manganese exist in an oxidized state and normally precipitate into the reservoir bottom sediments. Only when a water sample has been acidified then you can perform the analysis beyond the 48 hour holding time. Iron and Manganese in water may be detected by observing the color of the of the filter media. Maintaining a free chlorine residual and regular flushing of water mains may control the growth of iron bacteria in a water distribution system. If the raw water is pre-chlorinated, there will be black stains on the walls below the water level and a black coating over the top portion of the sand filter bed. When significant levels of dissolved oxygen are present, iron and manganese exist in an oxidized state and normally precipitate into the reservoir bottom sediments. Only when a water sample has been acidified then you can perform the analysis beyond the 48 hour holding time. Iron and Manganese in water may be detected by observing the color of the of the filter media. Maintaining a free chlorine residual and regular flushing of water mains may control the growth of iron bacteria in a water distribution system. The energy terms that are used to describe the operation of a pump are pressure and head. Moving matter does work by transferring some of its kinetic energy to other matter. The water is becoming corrosive in the distribution system causing rusty water if the Langelier index indicates that the pH has decreased from the equilibrium point. Mathematically derived factor obtained from the values of calcium hardness, total alkalinity, and pH at a given temperature. The Langelier Saturation Index (sometimes Langelier Stability Index) is a calculated number used to predict the calcium carbonate stability of water. It indicates whether the water will precipitate, dissolve, or be in equilibrium with calcium carbonate. Langelier developed a method for predicting the pH at which water is saturated in calcium carbonate (called pHs). In a lime softening process, excess lime is frequently added to remove Calcium and Magnesium Bicarbonate. The minimum hardness which can be achieved by the lime-soda ash process is 30 to 40 mg/L as calcium carbonate. The hardness due to noncarbonate hardness is most likely to determine the choice between lime softening and ion exchange to remove hardness. Though there is no consensus, some studies have even suggested that lime softening is effective at removal of Giardia. Users often recognize hard water because it prevents their soap from lathering properly. However, it can also cause buildup (“scale”) in hot water heaters, boilers, and hot water pipes. Because of these inconveniences, many treatment facilities use lime softening to soften hard water for consumer use. Before lime softening can be used, managers must determine the softening chemistry required. This is a relatively easy task for groundwater sources, which remain more constant in their composition. Surface waters, however, fluctuate widely in quality and may require frequent changes to the softening chemical mix. In lime softening, lime and sometimes sodium carbonate are added to the water as it enters a combination solids contact clarifier. Later, the pH of the effluent from the clarifier is reduced again, and the water is then filtered through a granular media filter. The water chemistry requirements of these systems require knowledgeable operators, which may make lime softening an economic challenge for some very small systems. The term generally used to describe ground limestone (calcium carbonate), hydrated lime (calcium hydroxide), or burned lime (calcium oxide). There are two classes of lymphocytes: 1) the B- cells, when presented with a foreign chemical entity (antigen), change into antibody producing plasma cells; and, 2) the T- cells interact directly with foreign invaders such as bacteria and viruses. Lysosomes contain a mixture of enzymes that can digest most of the macromolecules found in the rest of the cell. A matrix spike is used to determine the effect of the matrix on a method’s recovery efficiency. This goal is not always economically or technologically feasible, and the goal is not legally enforceable. The two flat surfaces are of such tolerances as to prevent the passage of water between them. Membrane potential affects the activity of excitable cells and the transmembrane movement of all charged substances. On the basis of their general physical and chemical properties, nearly every element in the periodic table can be termed either a metal or a nonmetal. A few elements with intermediate properties are, however, referred to as metalloids. Among important distinguishing characteristics of Metazoa are cell differentiation and intercellular communication. For certain multicellular colonial entities such as sponges, some biologists prefer the term "parazoa". The relative abundance of methane and its clean burning process makes it a very attractive fuel. However, because it is a gas at normal temperature and pressure, methane is difficult to transport from its source. The method blank is used to determine if analytes or interferences are present in the laboratory environment, the reagents, or the apparatus. A milligram (one one-thousandth of a gram) is equivalent to about 18 grains of table salt. A milligram (one one-thousandth of a gram) is equivalent to about 18 grains of table salt. In fact, humans would not be able to live without the bacteria that inhabit the intestines. However, certain types of bacteria called coliform bacteria can signal the presence of possible drinking water contamination.
9 of 10 - Review by V. Koraz
Votes: 288 votes
Total customer reviews: 288