Often the gamma radiation field at the position of the sample material is measured, or it may be calculated from the alpha radioactivity and potassium content of the sample environment, and the cosmic ray dose is added in.

Often, the individual consumes about 3-4 times the RDA's specification Toxicity of vitamin A is believed to be associated with the intervention methods used to upgrade vitamin A levels in the body such as food modification, fortification and supplementation, all of which are employed to combat vitamin A deficiency Toxicity is classified into two categories: acute and chronic toxicities.

Often the soil is highly alkaline, and a deficiency in nitrogen, potash, and iron severely limits agricultural potential.

Often symptoms are intermittent.

Often a localized headache or toothache is present, and it is these symptoms that distinguish a sinus-related headache from other types of headaches, such as tension and migraine headaches.

Often in those who have experienced their first episode of hypomania ( which is a level of mild to moderate mania )-generally without psychotic features-there will have been a long or recent history of depression prior to the emergence of manic symptoms, and commonly this surfaces in the mid to late teens.

Often the symptoms of ovarian cancer are identical to those of endometriosis.

Often, there are no symptoms with an A. lumbricoides infection.

Often symptoms will arise that indicate the body is not absorbing or making the lipoproteins that it needs.

Often, hypochondria persists even after a physician has evaluated a person and reassured them that their concerns about symptoms do not have an underlying medical basis or, if there is a medical illness, their concerns are far in excess of what is appropriate for the level of disease.

Often a crossover arm test is utilized in diagnosis because this compresses the AC joint, exacerbating the symptoms.

Often these symptoms and behaviors are determined by the nature of the BDD sufferer's perceived defect ; for example, use of cosmetics is most common in those with a perceived skin defect.

Often ITP is asymptomatic ( devoid of obvious symptoms ) and can be discovered incidentally, but a very low platelet count can lead to an increased risk of bleeding and purpura.

Often, these symptoms can be reduced or eliminated by decreasing the dose or ceasing treatment.

Often there are no symptoms.

Often, the diagnosis is made on the basis of the medical history and some blood tests — especially in young people in whom the risk of malignancy is negligible and the symptoms are generally self-limiting.

Often, symptoms mimic those of congestive heart failure ( esp.

Often, people with neuropathy who live in areas with defined winters ( such as the northern United States ) report that their symptoms were much less severe after moving to places with an undefined winter, such as Florida, California or New Mexico.

Often the eye inflammation occurs without symptoms, or while the JIA is otherwise in remission, and thus it is important for all children to get regular eye checkups from an eye physician.

Often patients recover, but symptoms then reappear.

Often a panic attack is one of the first symptoms of labyrinthitis.

Often, no precipitant is present, although some report development of symptoms in stressful situations, consumption of alcohol or caffeine, or other factors.

Often, a diagnosis can be made based on the patient's description of his or her symptoms, but other methods which may be used to verify gastritis include:

Often hyperchloremia does not produce any symptoms.

Often, no treatment is needed, as few stones produce symptoms.

Often the clinical signs and symptoms are suggestive of a malignant tumor.

Often, however, the book suggests that those minor characters who repeatedly make this judgment are simply looking for symptoms of change and vitality in the wrong parts of society — a theme Nova shares with Alfred Bester's Stars My Destination.

Often it is thin and fragile and gives way readily to the male organ at the first attempt at intercourse.

This led to the first of a number of periods in which an outside power controlled Athens ; Often the outside power set up a local agent as political boss in Athens ; but when Athens was independent, it operated under its traditional form of government ; even the bosses, like Demetrius of Phalerum, kept the traditional institutions in formal existence.

Often described as the opposite of déjà vu, jamais vu involves a sense of eeriness and the observer's impression of seeing the situation for the first time, despite rationally knowing that he or she has been in the situation before.

Often these books follow a formula where the first chapter involves Brown solving a case at the dinner table for his father, the local police chief in the fictional town of Idaville.

Often the work of these auteurs was first recognised abroad rather than in Germany itself.

Often they are the first port of call to critically ill or gravely injured patients, and must perform a variety of procedures to stabilize such patients, such as intubation, burr hole, cricothyroidotomy, and emergency laparotomy or thoracotomy to stanch bleeding.

Often enough, the first records potentially describing use of gunpowder in warfare were written several centuries after the fact, and may well have been colored by the contemporary experiences of the chronicler.

Often called " the first modern historian ", the English scholar Edward Gibbon wrote his magnum opus, The History of the Decline and Fall of the Roman Empire ( 1776 – 1788 ).

Often, when a convict is sentenced to TBS, he first serves a prison sentence.

Often called the first " modern Prime Minister ", he set both an example and a precedent for his successors.

Often, at first, the new version of an object is given a special name to distinguish it from the established version.

Often, the first part of a slate roof to fail is the fixing nails ; they corrode, allowing the slates to slip.

Often the teacher the student sees as root guru is simply the one who first introduced him to Buddhism, but a student may also change his personal view of which particular teacher is his root guru any number of times.

Often described as queen mother is the first daughter of a patriarchal lineage of a family collective.

Often cited as the moment of inception is his appearance on the UK TV programme Top of the Pops in March 1971 wearing glitter and satins, to perform what would be his second UK Top 10 hit ( and first UK Number 1 hit ), " Hot Love ".

Often, a fix for a problem will be " fragile " in that it fixes the problem in the narrow case where it was first observed but not in more general cases which may arise over the lifetime of the software.

Often they reenforce the communication of the ideogram by repeating the first or last syllable in the term.

Often sketches are first improvised by the actors and written down based on the outcome of these improv sessions ; however, improvisation is not necessarily involved in all sketch comedy.

Often affidavits are exchanged before trial, but the first opportunity to question the opposing party in most lawsuits is at trial.

Often folding involves first the establishment of regular secondary and supersecondary structures, in particular alpha helices and beta sheets, and afterward tertiary structure.

Often when a negative story is discovered attempts are made first to stop it.

Often readings are created by taking the standard reading and retaining only the first syllable ( for example roku becomes ro ).

Often the first ( more obvious ) meaning is straightforward, while the second meaning is less so: often risqué or ironic.

Often, but not always, outside first base ( that is, in foul territory ) and adjacent and connected to it there is a contrast-colored " double base " or " safety base ".