To control the odor, modern toilets use a small fan to keep the toilet under negative pressure, and exhaust the gasses to a vent pipe.

A subsequent review of these tests by the Federal Insecticide, Fungicide, and Rodenticide Act Scientific Advisory Panel points out that while " the negative results decrease the probability that the Cry9C protein is the cause of allergic symptoms in the individuals examined ... in the absence of a positive control and questions regarding the sensitivity and specificity of the assay, it is not possible to assign a negative predictive value to this "

The practice aims to liberate from negative conditioning and leads to control over perception and cognition.

The concept of the feedback loop to control the dynamic behavior of the system: this is negative feedback, because the sensed value is subtracted from the desired value to create the error signal, which is amplified by the controller.

A more comprehensive approach to measuring cost-effectiveness or efficacy of malarial control would not only measure the cost in dollars of the project, as well as the number of people saved, but would also consider ecological damage and negative aspects of insecticide use on human health.

The rate of hormone biosynthesis and secretion is often regulated by a homeostatic negative feedback control mechanism.

The acceptance of artificial methods of birth control is then claimed to result in several negative consequences, among them a " general lowering of moral standards " resulting from sex without consequences, and the danger that men may reduce women " to being a mere instrument for the satisfaction of own desires "; finally, abuse of power by public authorities, and a false sense of autonomy.

Leonard Ferguson's Religionism was defined by belief in God and negative attitudes toward evolution and birth control ; Humanitarianism was related to attitudes opposing the harsh treatment of criminals, capital punishment, and war ; and Nationalism described variation in opinions on censorship, law, patriotism, and communism.

Risk management is the identification, assessment, and prioritization of risks ( defined in ISO 31000 as the effect of uncertainty on objectives, whether positive or negative ) followed by coordinated and economical application of resources to minimize, monitor, and control the probability and / or impact of unfortunate events or to maximize the realization of opportunities.

Applying a negative DC voltage (" bias ") to the control grid will repel some of the electron stream back towards the cathode, thus isolating the plate from the cathode ; full bias will turn the tube off by blocking all current from the cathode.

As the Constitution requires that the popular branch of the legislature should have an absolute check, so as to put a peremptory negative upon every act of the government, it requires that the common people, should have as complete a control, as decisive a negative, in every judgment of a court of judicature.

When held negative with respect to the cathode, the control grid creates an electric field which repels electrons emitted by the cathode, thus reducing or even stopping the current between cathode and anode.

As long as the control grid is negative relative to the cathode, essentially no current flows into it, yet a change of several volts on the control grid is sufficient to make a large difference in the plate current, possibly changing the output by hundreds of volts ( depending on the circuit ).

As the voltage applied to the so-called control grid ( or simply " grid ") was lowered from the cathode's voltage to somewhat more negative voltages, the amount of current from the filament to the plate would be reduced.

His forced conversions or evictions carried out in the midst of the Thirty Years ' War, which with the later general success of the Protestants therefore had greatly negative consequences for Habsburg control of the Holy Roman Empire itself, while these campaigns within the Habsburg hereditary lands were largely successful in religiously purifying his demesnes, leaving the Austrian Emperors thereafter with much greater control within their hereditary power base — although Hungary was never successfully re-Catholicized — but one much reduced in population and economic might while less vigorous and weakened as a nation-state.

* In telecommunications, a negative-acknowledge character ( NAK or NACK ) is a transmission control character sent by a station as a negative response to the station with which the connection has been set up.

In infectious disease control a smoke test is done to see whether a room is under negative pressure.

Stimulus control therapy is a treatment for patients who have conditioned themselves to associate the bed, or sleep in general, with a negative response.

" he wrote, " We must rapidly bring the world population under control, reducing the growth rate to zero or making it negative.

The researchers found that both the control and the eating disorder patients showed attentional bias against high fat foods and negative eating pictures.

In many laboratory experiments it is good practice to have several replicate samples for the test being performed and have both a positive control and a negative control.

The problematic case ( when n is negative ) demonstrates a use of ML's exception system.

* 1839 – John Herschel demonstrates hyposulfite of soda ( also known as hypo, or sodium thiosulfate ) as a fixer, and makes the first glass negative.

Thus, Wee1 localizes with its inhibitory network, which demonstrates that mitosis is controlled through Cdr2-dependent negative regulation of Wee1 at the medial cortical nodes.

The types of clothing that an individual wears convey nonverbal clues about his or her personality, background and financial status, and how others will respond to them, for instance, “ Miniskirts can give a woman the appearance that she is not approachable .” This demonstrates a certain response, in this case, a negative and unapproachable response, simply via appearance.

The following study: http :// www. ncbi. nlm. nih. gov / pmc / articles / PMC2278718 / demonstrates how the parasympathetic nervous system, through the action of vagus nerve, exerts a negative inotropic effect upon the heart )

In chapter 5 " The Married Woman " Beauvoir demonstrates her negative thoughts about marriage saying that " to ask two spouses bound by practical, social and moral ties to satisfy each other sexually for their whole lives is pure absurdity ".

The diagram to the right demonstrates a negative supply shock ; The initial position is at point A, producing Y < sub > 1 </ sub > quantity, at P < sub > 1 </ sub > prices.

Some researchers and scientists refrain from looking over theories carefully which demonstrates science's undesirable or negative qualities.

PCT demonstrates circular causation in a negative feedback loop closed through the environment.

A recent IMF report demonstrates that the increase in inequality in the developing countries in the period 1981 to 2004 was due entirely to technological change, with globalisation making a partially offsetting negative contribution, and that in the developed countries globalisation and technological change were equally responsible.

The fact that an iconic cartoon series can use such stereotypical images of riders to good effect demonstrates how much the negative rider image is ingrained within society.

Because the rake angle Af at the tip of the knife is very much smaller ( or even negative ) when compared to the value of **yc for the major portion of the knife, a very rapid increase in cutting force with thickness will result.

As a result, an electron could always radiate energy and fall into a negative energy state.

As a result, the Boltzmann factor for states of systems at negative temperature increases rather than decreases with increasing state energy.

In order to keep the cytotoxic cells from killing cells just for presenting self-proteins, self-reactive T cells are deleted from the repertoire as a result of tolerance ( also known as negative selection ).

* Resentment, a negative emotion, similar to bitterness, felt as a result of a real or imagined wrong done

In contrast simple molecular orbital theory predicts that the hydrogen molecule dissociates into a linear superposition of hydrogen atoms and positive and negative hydrogen ions, a completely unphysical result.

If one alters a Euclidean space so that its inner product becomes negative in one or more directions, then the result is a pseudo-Euclidean space.

On the most basic level, electronegativity is determined by factors like the nuclear charge ( the more protons an atom has, the more " pull " it will have on negative electrons ) and the number / location of other electrons present in the atomic shells ( the more electrons an atom has, the farther from the nucleus the valence electrons will be, and as a result the less positive charge they will experience — both because of their increased distance from the nucleus, and because the other electrons in the lower energy core orbitals will act to shield the valence electrons from the positively charged nucleus ).

Though cards sometimes have obvious interpretations for the context in which they are drawn, the rules explain that sometimes they are best read simply as " a positive ( or negative ) result.

Ketones may be distinguished from aldehydes by giving a negative result with Tollens ' reagent or with the Fehling's solution.

A third of the respondents believed disclosing their sexual history would result in a negative reaction, and 30 % had received a negative reaction from a medical professional after identifying themselves as lesbian or bisexual.

Permanent electric dipoles result when one end of a molecule has a net positive charge while the other end has a net negative charge.

The press printed some negative stories as a result and the crowds barracked as they had done on his previous tour, which made him angry.

In agreement with Fresnel's dragging coefficient, he obtained a negative result.

He obtained a positive result, but this was shown to be an experimental error, because a repetition of the experiment by Haga ( 1901 ) gave a negative result.

Lord Rayleigh conducted similar experiments with improved accuracy, and obtained a negative result as well.

The negative result can be explained by Lorentz's theory, according to which the electromagnetic momentum compensates the momentum due to Earth's motion.

As a result tourism has become Malaysia ’ s third largest source of income from foreign exchange, although it is threatened by the negative effects of the growing industrial economy, with large amounts of air and water pollution along with deforestation affecting tourism.

While at least one researcher, Michael Persinger, claims otherwise, Jeffrey Gray states in his book Consciousness: Creeping up on the Hard Problem, that tests looking for the influence of electromagnetic fields on brain function have been universally negative in their result.

As few as two mutations can result in speciation: if each mutation has a neutral or positive effect on fitness when they occur separately, but a negative effect when they occur together, then fixation of these genes in the respective subgroups will lead to two reproductively isolated populations.

They would typically be perceived as either lacking confidence or being indifferent or oblivious to the negative perceptions held of them by others, with the result that they become frequent objects of scorn, ridicule, bullying, and social isolation.

As an example, if someone kills someone else, such a nihilist might argue that killing is not inherently a bad thing, bad independently from our moral beliefs, only that because of the way morality is constructed as some rudimentary dichotomy, what is said to be a bad thing is given a higher negative weighting than what is called good: as a result, killing the individual was bad because it did not let the individual live, which was arbitrarily given a positive weighting.