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Search Results: 1 - 10 of 3527 matches for " Allen Luk "
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Testing Low Doses of Caffeine on Respiratory Resistance Using the Airflow Perturbation Device  [PDF]
Mary Kate Montgomery, Allen Luk, Arthur T. Johnson, Jafar Vossoughi
Open Journal of Respiratory Diseases (OJRD) , 2017, DOI: 10.4236/ojrd.2017.72006
Abstract: Research reports on pulmonary function measurements often mention caffeine abstinence as a condition for testing subjects. Yet, the effects of caffeine on respiration are not well documented. This study was intended to investigate the physiological effects of caffeine on respiratory resistance measurements and the necessity of caffeine avoidance in such testing. Thirty-one subjects were administered caffeine in pill form for dosages in the range of 3 - 4.5 mg/kg body weight. Respiratory resistance was measured with the Airflow Perturbation Device every 15 minutes after caffeine ingestion until a full hour of elapsed time. No changes were noted in inhalation, exhalation, and average respiratory resistances during the times of measurements. The conclusion is that for low dosages of caffeine, respiratory resistance measurements are not affected by caffeine ingestion prior to testing.
Dark Experiments: From Black Holes to Cosmic Rays  [PDF]
Allen D. Allen
Journal of Modern Physics (JMP) , 2012, DOI: 10.4236/jmp.2012.39125
Abstract: Some nagging questions in modern physics can be resolved rigorously using a basic mathematical formalism, albeit with the need to admit that non-isomorphic realities arise to various degrees in a given universe. Let U=(m', m\") be an unordered pair of distinct massive objects in different reference frames. A dark experiment is an ordering u, mv> of the elements of U, either or, exclusively, , where the left-hand member of the ordered pair is called the observer, and where there exists a 1-to-1 mapping f:{u}→{events}, mv> , such that both elements of an ordered pair in a dark experiment agree on the events that unfold in the experiment. However, since , it follows that f()≠f(). This describes non-isomorphic realities where in both elements of each ordered pair mapping two distinct sets of unfolding events will agree on their respective events. Consequently, there is an inherent limitation on what can be determined directly from experimentation. Examples arise in the context of the Hawking information paradox, relativistic time travel, and cosmic ray experiments.
State of the Art in Cardiac Intervention: A Case Report  [PDF]
Allen D. Allen
International Journal of Clinical Medicine (IJCM) , 2012, DOI: 10.4236/ijcm.2012.37112

The first acute myocardial infarction (MI) of an elderly male was determined through angiography to be due to an infarct of the circumflex artery. The angiogram also revealed chronic occlusion and diffuse disease of the left anterior descending artery (LAD). This had been compensated for by collateral circulation from the right coronary artery. Since the patient had no prior history of coronary artery disease, the chronic and collateralized disease of the LAD was presumed to be stable and this artery was not treated. Due to a history of aspirin intolerance a bare metal stent was implanted in the circumflex artery. Within hours after stenting the patient had a second acute MI. Despite no change in the angiogram, the EKG suggested that the LAD was the source of the second MI. Indeed, a drug-eluting stent implanted in the LAD resolved the patient’s signs and symptoms and he was discharged with a favorable outcome. The surprising second MI and the inconsistent stenting illustrate that when the unexpected occurs, there is no substitute for the judgment of a skilled clinician.

Finite Gravity: From the Big Bang to Dark Matter  [PDF]
Allen D. Allen
International Journal of Astronomy and Astrophysics (IJAA) , 2013, DOI: 10.4236/ijaa.2013.32020

The purpose of the present paper is to assume that the expanding spacetime of our cosmos was created by the big bang. It then follows that there exists a finite instantaneous radial extent dRU to spacetime as observed from anywhere in spacetime by comoving observers. The consequences for gravity are explored by first considering the scalar field of a central mass that defines the dynamic properties of a circular orbit for each radius RdRU under the postulate of weak equivalence. These properties include an orbital velocity and an escape velocity. For a central mass of galactic proportion, the escape velocity becomes large even at cosmological distances. By considering the dynamics of a smaller mass occupying the last orbit, we find that the established laws of physics lead to different rotation curves than they do when applied to the solar system. Since galactic rotation curves reveal the existence of dark matter, this is anticipated to have some consequences for our understanding of dark matter.

Implications of rare neurological disorders and perceptual errors in natural and synthetic consciousness  [PDF]
Allen D. Allen
World Journal of Neuroscience (WJNS) , 2013, DOI: 10.4236/wjns.2013.34031

Recent theories on natural and synthetic consciousness overlook the geometric structure necessary for awareness of 3-dimensional space, as strikingly illustrated by left-neglect disorder. Furthermore, awareness of 3-dimensional space entails some surprisingly tenacious optical illusions, as demonstrated by an experiment in the text. Awareness of linear time is also crucial and complex. As a consequence, synthetic consciousness cannot be realized by simply intercomnecting a large number of electronic circuits constructed from ordinary chips and transistors. Since consciousness is a subjective experience, there is no sufficient condition for consciousness that can be experimentally confirmed. The most we can hope for is agreement on the necessary conditions for consciousness. Toward that end, this paper reviews some relevant clinical phenomena. 

Mortality and morbidity due to the failure to treat mild anemia unrelated to cancer in elderly Americans—Review of the literature and case presentation  [PDF]
Allen D. Allen
Advances in Aging Research (AAR) , 2013, DOI: 10.4236/aar.2013.24022
Abstract: Even mild iron deficiency anemia, as defined by the World Health Organization, is associated with increased mortality and significant morbidity in elderly individuals who are cancer free. Yet, anemia in the elderly is often dismissed as a benign sign of aging. This problem is exacerbated by the fact that elderly individuals often suffer from gastrointestinal complaints that preclude treatment with iron supplements by mouth. The FDA has approved two brands of injectable iron for treating such patients. Nonetheless, a major American health maintenance organization refuses to treat elderly patients with injectable iron, even when it is indicated, unless their anemia is associated with cancer. This may well reflect a public health crisis afflicting many elderly residents of the United States.
Self-Contradictions from the Excessive Use of Natural Units  [PDF]
Allen D. Allen
Journal of Modern Physics (JMP) , 2014, DOI: 10.4236/jmp.2014.56049

The hypothesis c = h = G = 1 implies that unit mass is not a single-valued function but rather has two widely varying values, such as 7.4 × 10-51 kg and 4.0 × 1035 kg. Hence, the considerable body of work in theoretical physics that uses this common convention must be deemed suspect. In order to avoid this problem, theoreticians must limit themselves to c = h = 1 or, exclusively, c = G = 1 depending upon whether they are chiefly concerned with atomic physics or with gravity, respectively.

Quantum Effects from a Simple Card Game  [PDF]
Allen D. Allen
Journal of Modern Physics (JMP) , 2014, DOI: 10.4236/jmp.2014.518195
Abstract: A well-known, classical conundrum, which is related to conditional probability, has heretofore only been used for games and puzzles. It is shown here, both empirically and formally, that the counterintuitive phenomenon in question has consequences that are far more profound, especially for physics. A simple card game the reader can play at home demonstrates the counterintuitive phenomenon, and shows how it gives rise to hidden variables. These variables are “hidden” in the sense that they belong to the past and no longer exist. A formal proof shows that the results are due to the duration of what can be thought of as a gambler’s bet, without loss of generalization. The bet is over when it is won or lost, analogous to the collapse of a wave function. In the meantime, new and empowering information does not change the original probabilities. A related thought experiment involving a pregnant woman demonstrates that macroscopic systems do not always have states that are completely intrinsic. Rather, the state of a macroscopic system may depend upon how the experiment is set up and how the system is measured even though no wave functions are involved. This obviously mitigates the chasm between the quantum mechanical and the classical.
Lost Immune Markers for Major Affective Disorders: Could They Help Screen Airline Pilots?  [PDF]
Allen D. Allen
International Journal of Clinical Medicine (IJCM) , 2015, DOI: 10.4236/ijcm.2015.64036
In the 1980s it was discovered that quantitative IgG titers for antibodies directed against the hu-man-obligate DNA viruses were reliably and reproducibly correlated negatively with mood in in-dividuals with major affective disorders. This knowledge was lost to confirmation bias and uncontrolled studies that only looked at Epstein-Barr virus antibodies. The latter led to a long American fad of misdiagnosing major affective disorders as a “chronic Epstein-Barr virus syndrome.” This misdiagnosis even became part of the American popular culture during the 1980s. In light of fatal airline crashes intentionally caused by pilots, the antiviral IgG titers should be revisited as a means of screening pilots for current dysphoria or mania/hypomania due to major affective disorders.
Death and Modern Science: The Hidden Connections, Profound Implications, and a Question of Hope  [PDF]
Allen D. Allen
Open Journal of Philosophy (OJPP) , 2017, DOI: 10.4236/ojpp.2017.71006
The purpose of this paper is to provide a few examples of how several branches of science have interesting and even profound implications for our understanding of death. The method will be to analyze some established principles from biology, astrophysics, mathematics and quantum mechanics. There are four results: First, the death and biodegradable bodies of Earth’s animals played a significant role in the evolution of the human species. In this ironic sense, we owe our lives to death. Second, unnatural death can be frame-dependent. A person can be alive and well in his proper reference frame despite having died an unnatural death in an external frame. Third, if the multiverse theory is not valid, then the death of the universe is inevitable and irreversible. This is tantamount to the law of increasing entropy. Fourth, events do not go out of existence with the passage of time. Rather, what is lost to the past is the high probability associated with detecting present events. In other words, the high amplitude of present events washes out detection of past events like the daytime sun washes out the stars. Since the unconscious mind does not detect energetic sensory data, it may be timeless as many have suggested. If so, it need not depend upon high amplitude events, thus giving some credence to paranormal psychology. Moreover, the death of the organic brain in its inertial frame of reference may not be synchronized with the death of the unconscious, thus admitting to something like an afterlife. In conclusion, scientists should conduct further research as a follow-up to this early paper in order to gain a deeper understanding of death, an event that is inevitable for us all and has profound consequences.
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