Any open flame or electric sparks, including lit tobacco products like cigarettes, cigars or pipes, in the area also present a danger of ignition of any hydrogen gas emanating from a battery ( this is the reason, when recharging the battery in place in the vehicle or jump starting, that the negative cable of the recharger or attached to the other vehicle's jumping battery negative post is always attached away from the battery to ground on the engine or frame, and is always attached to complete the circuit only after the positive cable has been attached to the battery's positive terminal ( and is removed in the reverse order, i. e., negative cable first from the frame or engine, breaking the circuit, then positive cable from the battery )-in this fashion, any sparks which may occur will occur at the more distant location of the negative cable attachment point, away from the battery and potentially explosive gases, and no sparks will occur, as the circuit is no longer complete, when the positive cable is attached or detached from the battery ).

But Paine maintains a positive view overall, hoping that this American crisis can be quickly resolved, " for though the flame of liberty may sometimes cease to shine, the coal can never expire.

A positive test is indicated by a green flame caused by the formation of a copper halide.

that some hypothesis test will produce a false positive by chance.

This is called a positive Romberg's test.

A positive test indicates that the chemical is mutagenic and therefore may act as a carcinogen, since cancer is often linked to mutation.

A previous BCG vaccination can cause a false positive Mantoux test, although a very high-grade reading is usually due to active disease.

A characteristic fishy odor is considered a positive whiff test and is suggestive of bacterial vaginosis.

Bacillus species can be obligate aerobes or facultative anaerobes, and test positive for the enzyme catalase.

The latter test is relatively insensitive, successfully detecting only 60-80 % of infections in asymptomatic women, and often giving falsely positive results.

In those samples that test positive, further testing should be done to determine antibiotic resistance.

A definition of AIDS agreed upon in 1985 by the World Health Organization in Bangui did not require a positive HIV test, but since 1985, many African countries have added positive HIV tests to the Bangui criteria for AIDS or changed their definitions to match those of the U. S. Centers for Disease Control.

The season ends during Monica and Chandler ’ s wedding where Phoebe and Rachel find a positive pregnancy test in the bathroom.

In the eighth season, it is revealed that the positive pregnancy test found at Monica's wedding belongs to Rachel.

A 2005 study stated that " differential validity in prediction suggests that the WAIS-R test may contain cultural influences that reduce the validity of the WAIS-R as a measure of cognitive ability for Mexican American students ," indicating a weaker positive correlation relative to sampled white students.

As with the K-S test, the discrepancy statistics D < sup >+</ sup > and D < sup >−</ sup > represent the absolute sizes of the most positive and most negative differences between the two cumulative distribution functions that are being compared.

Ketones give positive results in Brady's test, the reaction with 2, 4-dinitrophenylhydrazine to give the corresponding hydrazone.

Methyl ketones give positive results for the iodoform test.

He noted that Clemens has never tested positive in a steroid test.

In addition, 5 % of patients with a positive tilt table test may have seizure-like activity that seems to be due to cerebral hypoxia.

A skin test of the employee by the CDC returned positive this morning for non-contagious cutaneous anthrax.

However, on March 26, 1983, the first test, known as the Cabra event, was performed in an underground shaft and resulted in marginally positive readings that could be dismissed as being caused by a faulty detector.

Women who test positive should be given prophylactic antibiotics during labor, which will usually prevent transmission to the infant.

The distribution of tuberculosis is not uniform across the globe ; about 80 % of the population in many Asian and African countries test positive in tuberculin tests, while only 5 – 10 % of the United States population tests positive.

Specimens collected within 8 days following onset of illness may not test positive for West Nile IgM, and testing should be repeated.

Bushes and vines abetted the rocks in forming thorny detours for the struggling stranger, and without the direct light of the sun to act as compass, Pamela could no longer be positive of her direction.

What is interesting is that his positive qualifications for the post were revealed only as a kind of tail to his candidacy.

Let p be the minimal polynomial for T, Af, where the Af, are distinct irreducible monic polynomials over F and the Af are positive integers.

Our central goal should be to provide the greatest positive incentive for these societies to tackle boldly the tasks which they face.

This subject, who has been undergoing psychoanalytic psychotherapy for five years, did not give a positive Kohnstamm reaction under any of the four standardized conditions used in this experiment while sober.

He is a trustee for the common good, however feeble the safeguards which the positive or municipal law of property provides against his misuse of that share of the common fund, wisely or unwisely, entrusted to his keeping.

If the rake angle **yc of the knife is high enough and the friction angle **yt between the front of the knife and the back of the chip is low enough to give a positive value for Af, the resultant vector R will lie above the plane of the substrate.

And there are some positive results, though the final findings will not be known for a long time -- and then further research can be formulated.

The positive development, during adolescence, of this capacity to think and to feel strongly and with increasing independence, and to identify overtly either with or against given ideas, values, and practices, depends to a considerable degree on both previous and present opportunities for developing autonomy, initiative, and self-certainty.

The Portland school board was asked Monday to take a positive stand towards developing and coordinating with Portland's civil defense more plans for the city's schools in event of attack.

It is a proposal that justice now be served by means other than those that have ever preconditioned the search for it, or preconditioned more positive means for attaining it, in the past.

minimizing false negative errors for a fixed rate of false positive

The philosopher Søren Kierkegaard, in The Concept of Anxiety, described anxiety or dread associated with the " dizziness of freedom " and suggested the possibility for positive resolution of anxiety through the self-conscious exercise of responsibility and choosing.

In particular, he notes that investment spending remained positive in all recessions where there are data, except for the Great Depression.

Industrial output was relatively positive throughout 2010, with year-on-year average growth of 10. 9 percent in the period January to September 2010, due largely to the mining sector where higher global demand for commodities led to higher prices.

In the Schrödinger equation for this system of one negative and one positive particle, the atomic orbitals are the eigenstates of the Hamiltonian operator for the energy.

In fact, it can be any positive integer, but for reasons discussed below, large numbers are seldom encountered.

In number theory, if P ( n ) is a property of positive integers, and if p ( N ) denotes the number of positive integers n less than N for which P ( n ) holds, and if

( see limit ), then we say that " P ( n ) holds for almost all positive integers n " ( formally, asymptotically almost surely ) and write

The constitution was submitted for a public vote and Johnson campaigned for its adoption ; his support of the new work provided him with additional positive statewide exposure.

He investigated its positive anti-bacterial effect on many organisms, and noticed that it affected bacteria such as staphylococci and many other Gram-positive pathogens that cause scarlet fever, pneumonia, meningitis and diphtheria, but not typhoid fever or paratyphoid fever, which are caused by Gram-negative bacteria, for which he was seeking a cure at the time.