No obvious symptoms

1 Clear products - suitable for membrane filtration. Action points  

2 Fruit juices and unfilterable drinks. Spht bottle method. Action points  

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It was really a sudden loss, because there had been no obvious symptom about his heart. The EuAs C2S-9 was the last occasion for me to see him in life. 

Symptoms Young plants wilt or grow poorly, and are easily pulled out of the ground. Established plants may show no obvious symptoms. Damage to root crops (radish, turnip, rutabaga) may make them inedible. Larvae occasionally found inside Brussels sprouts. 

Induction (sensitization) requires a sufficient or cumulative exposure dose of the sensitizing agent to induce immune responses that cause no obvious symptoms. 

Each year, more than V/2 million children have elevated blood lead levels in this country. In most cases of lead poisoning there are no obvious symptoms to alert a parent. Yet these children are at risk for behavioral problems, learning disabilities, and reduced IQ because of exposure to this invisible toxin, which is all around us. 

Even though lead poisoning can cause serious harm, it often goes undetected because there are no obvious symptoms. Lead poisoning is sometimes called the silent disease. Even fairly severe cases show symptoms that are difficult to identify because they are the same for many other diseases—irritability, stomach pains, dizziness, constipation, vomiting, muscle weakness, and lack of appetite. ... 

Typically, patients have symptoms for 1 to 3 months before presentation. These include fatigue, fever, and pallor, but patients generally are in no obvious distress. 

Unless one identifies internal inhibition with reversible agglomeration of proteins, it is difficult to see what one can do with Pavlov s theory of sleep.10 Sleep and what we call internal inhibition are one and the same process. The fundamental condition of the appearance and development of internal inhibition and sleep is exactly the same. It consists in the more or less prolonged or many times repeated isolated action of a conditioned stimulus producing stimulation of the cellular structures in the cortex. In all cases of internal inhibition which were discussed in the fourth to the seventh lectures drowsiness and sleep were met with continually. In the case of extinction of a conditioned reflex some animals even at the first extinction showed not only a disappearance of the conditioned secretory and corresponding motor reaction but also a great dullness as compared with the normal state of the animal before the extinction. Repetition of extinctions, in the course of a number of days, even if all the conditioned stimuli were reinforced in between, led in every case to an obvious drowsiness and even sleep of the animal in its stand, though no such symptoms had ever previously been observed. 

Methyl fluoroacetate, a mobile liquid, has an extremely faint odour. Animals did not usually exhibit any symptoms while being exposed to lethal concentrations of this vapour, and no obvious effects were noted until some 30-60 min. (depending upon the concentration) after exposure. Violent convulsions then took place and death usually followed within a few hours. For rabbits and guinea-pigs the lethal concentration (l.c. 50) for a 10 min. exposure was of the order of 0-1 mg./l. Mice were rather more resistant. Intravenous injection produced symptoms similar to those displayed after exposure to the vapour. Even with large doses a delayed action was observed. The l.d. 50 for rabbits (intravenously) was found to be about 0-25 mg./kg. 

Methyl fluoroacetate (M.F.A.) is a liquid of b.p. 104° and f.p. ca. — 32° and is almost odourless. During a 10 min. exposure to a lethal concentration of the vapour, small animals did not appear to be affected in any way. After exposure, no very obvious symptoms developed until some 30-60 min. later (depending upon the concentration). The symptoms then shown depended to some extent upon the species, but all animals suffered convulsions, from which a partial recovery was sometimes made. Finally, however, a recurrence of the convulsions would cause death. 

Involvement of the pleura, i.e. formation of pleural plaques (fibrotic masses on the pleura) may accompany asbestosis or occur independently, that is, as lesions with no obvious causal relationship (Whitwell, 1978). Pleural plaques only occasionally cause symptoms, as when they restrict the motion of the lung by thickening the membrane (pleura) around the lung or disrupting tissue viability by calcifying. 

Susceptible cultivars of most of these plants develop severe leaf injury when exposed to 2 to 5 pphm of ozone for 1 to 4 hr. This level of ozone is very common in urban areas and so are symptoms of ozone injury. However, such symptoms have also been reported from plants growing in such rural states as Maine and South Dakota. Even when no obvious injury can be seen, plants exposed to low levels of ozone may not grow as well or yield as much as plants growing in air free of ozone. On some plants, e.g., spinach, the symptoms of ozone injury are quite distinctive consequently, plants like these are being used in some places to detect and monitor air pollution. 

The Second Princeton Consensus on Sexual Function concluded that the recognition of ED as a warning sign of silent vascular disease has led to the concept that a man with ED and no cardiac symptoms is a cardiac (or vascular) patient until proved otherwise, Therefore any asymptomatic man who presents with ED that does not have an obvious cause (e.g., trauma) should be screened for vascular disease and have blood glucose, lipids, and BP measured. Ideally, all patients at risk should undergo an elective exercise ECG to facilitate risk stratification (3 1,32). 

There are usually no early symptoms associated with internal cantamination unless the intake has been very high, which is extremely rare. It this has occurred, it wit normally be obvious to the person concerned. Therefore, the focus of this leaflet is on external exposure resulting from radiation sources. 

Typically a 1 - to 3-month history of vague symptoms such as tiredness, lack of exercise tolerance, chest pain, and "feeling unwell," but in no obvious distress. 

Renal carcinoma continues to be a major cause of morbidity and mortality worldwide (Table 16.12). Last year, approximately 54,000 new renal tumor patients were diagnosed and 13,000 deaths were ascribed to renal cancer in the United States. Renal cell carcinoma (RCC) is the seventh most common neoplasm in American males and the ninth most common neoplasm in females. There is a twofold to threefold male predominance of RCC incidence but no obvious racial predilection. Recognized risk factors include tobacco smoking, obesity (body mass index >29 may double the risk of RCC) and acquired or hereditary polycystic diseases. The classic clinical presentation symptom triad of flank pain, hematuria, and palpable mass is no longer the... 

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