Strange Effects Research Articles

Foundations of strangeness nuclear physics derived from chiral effective field theory

Dense compact objects like neutron stars or black holes have always been one of Gerry Brown’s favorite research topics. This is closely related to the effects of strangeness in nuclear physics. Here, we review the chiral Effective Field Theory approach to interactions involving nucleons and hyperons, the possible existence of strange dibaryons, the fate of hyperons in nuclear matter and the present status of three-body forces involving hyperons and nucleons.

The Effects of 528 Hz Sound Wave to Reduce Cell Death in Human Astrocyte Primary Cell Culture Treated with Ethanol

Objective: Alcohol consumption, because of damaging effects on various tissues including nerves system, causes a major problem in human societies. Nowadays, Usages of the non-pharmacological and non-invasive agents is common. Sound waves which are classified in non-invasive agent, beside on stimulation the auditory cells, also impact on non- auditory cells. It has been reported that the frequency of 528 HZ is related to the note MI and it shown some strange effects such as increasing the ability of DNA repair. Materials and methods: In this paper, with MTT, LDH and ROS assays, it was evaluated the effect of ethanol on astrocytes primary cell culture which exposed to this frequency. Results: The current results show that in IC50 of ethanol, the frequency of 528 Hz increased cells viability about 20% and the level of ROS production has been reduced up to 100%. Conclusion: Therefore, the use of these sound waves can be useful to reduce the toxic effects of ethanol on astrocytes cells culture.

Erros na fala da criança e instâncias subjetivas na sua relação com a língua

Este artigo objetiva refletir sobre alguns erros na aquisição do léxico e da morfologia verbal na fala de uma criança brasileira, durante o processo de aquisição da linguagem. Para interpretá-los, o quadro teórico interacionista é convocado. São enfocados os diálogos em que a criança reformula o seu dizer a partir do efeito de estranhamento (ou surpresa) que o erro em sua fala produz na fala do outro. São analisadas as situações: a) em que ao reformular o seu dizer, a escuta da língua não é sinalizada na fala da criança e b) em que ao reformular o seu dizer, a escuta da língua é sinalizada na fala de M. Argumenta-se que esses fenômenos permitem ilustrar instâncias subjetivas que identificam a posição da criança na sua relação com a língua.

Guess-Work and Reasonings on Centennial Evolution of Surface Air Temperature in Russia. Part IV: Towards Economic Estimations of Climate-Related Damages from the Bifurcation Analysis Viewpoint

The paper completes the cycle of the research devoted to the development of the experimental bifurcation analysis (not computer simulations) in order to answer the following questions: whether qualitative changes occur in the dynamics of local climate systems in a centennial timescale?; how to analyze such qualitative changes with daily resolution for local and regional space-scales?; how to establish one-to-one daily correspondence between the dynamics evolution and economic consequences for productions? To answer the questions, the unconventional conceptual model to describe the local climate dynamics was proposed and verified in the previous parts. That model (HDS-model) originates from the hysteresis regulator with double synchronization and has a variable structure due to competition between the amplitude quantization and the time quantization. The main advantage of the HDS-model is connected with the possibility to describe “internally” (on the basis of the self-regulation) the specific causal effects observed in the dynamics of local climate systems instead of “external” description of three states of the hysteresis behavior of climate systems (upper, lower and transient states). As a result, the evolution of the local climate dynamics is based on the bifurcation diagrams built by processing the data of meteorological observations, where the strange effects of the essential interannual daily variability of annual temperature variation are taken into account and explained. It opens the novel possibilities to analyze the local climate dynamics taking into account the observed resultant of all internal and external influences on each local climate system. In particular, the paper presents the viewpoint on how to estimate economic damages caused by climate-related hazards through the bifurcation analysis. That viewpoint includes the following ideas: practically each local climate system is characterized by its own time pattern of the natural qualitative changes in temperature dynamics over a century, so, any unified time window to determine the local climatic norms seems to be questionable; the temperature limits determined for climate-related technological hazards should be reasoned by the conditions of artificial human activity, but not by the climatic norms; the damages caused by such hazards can be approximately estimated in relation to the average annual profit of each production. Now, it becomes possible to estimate the minimal and maximal numbers of the specified hazards per year in order, first of all, to avoid unforeseen latent damages. Also, it becomes possible to make some useful relative estimation concerning damage and profit. We believe that the results presented in the cycle illustrate great practical competence of the current advances in the experimental bifurcation analysis. In particular, the developed QHS-analysis provides the novel prospects towards both how to adapt production to climatic changes and how to compensate negative technological impacts on environment.

ON THE NUMERICAL ACCURACY OF FIRST-ORDER APPROXIMATE SOLUTIONS TO DSGE MODELS

Many algorithms that provide approximate solutions for dynamic stochastic general equilibrium (DSGE) models employ the QZ factorization because it allows a flexible formulation of the model and exempts the researcher from identifying equations that give raise to infinite eigenvalues. We show, by means of an example, that the policy functions obtained by this approach may differ from both the solution of a properly reduced system and the solution obtained from solving the system of nonlinear equations that arises from applying the implicit function theorem to the model's equilibrium conditions. As a consequence, simulation results may depend on the specific algorithm used and on the numerical values of parameters that are theoretically irrelevant. The sources of this inaccuracy are ill-conditioned matrices as they emerge, e.g., in models with strong habits. Researchers should be aware of those strange effects, and we propose several ways to handle them.

Fairy Tale Transformation: The Pied Piper Theme in Australian Fiction

Fairy Tale Transformation: The Pied Piper Theme in Australian Fiction

The New Woman Ideal and Urban Space in Tess Slesinger’s The Unpossessed

Our space has strange effects. For one thing, it unleashes desire.—Henri Levebvre (97)The loosely knit plot of Tess Slesinger’s 1934 novel The Unpossessed revolves around an attempt on the part of ...

Lattice calculation of the leading strange quark-connected contribution to the muon g − 2

We present results for the leading hadronic contribution to the muon anomalous magnetic moment due to strange quark-connected vacuum polarisation effects. Simulations were performed using RBC--UKQCD's $N_f=2+1$ domain wall fermion ensembles with physical light sea quark masses at two lattice spacings. We consider a large number of analysis scenarios in order to obtain solid estimates for residual systematic effects. Our final result in the continuum limit is $a_\mu^{(2)\,{\rm had},\,s}=53.1(9)\left(^{+1}_{-3}\right)\times10^{-10}$.

Que mangeaient les lotophages ? Contribution de l’ethnobotanique maghrébine à l’interprétation d’un passage de l’Odyssée

During their journey to go back to Ithaca, Odysseus and his companions happened to reach the country of the Lotophagoi. Some of them consumed the lotos which had strange effects on their behaviour. Nowadays, I have observed among the Beni Bou Ifrah (Mediterranean coast, Morocco) a recreation which have helped me to understand a passage from Ibn Hawqal’s text (10th century) about the coral fishermen of Marsa Al-Kharaz (ancient anchorage on the Algerian coast). Then, it has become possible to provide a new explanation for the behavioural perturbations Homer’s Odysseus has assigned to the lotos consumption.

The 11th Swiss Biennial On Science, Technics + Aesthetics, 16 January 2016, Abstracts

The philosophical dispute between the British mathematician Sir Roger Penrose and the Austrian quantum physicist Anton Zeilinger, which took place on stage in the Lucerne Theatre 15 years ago at the noteworthy Biennial The Engima of Consciousness, is legendary. The hot epistemological question at stake back then, whether there might exist a world “out there”—a world beyond human observation—remains undecided to the present day. The origin and nature of consciousness—the awareness of being aware—possessed perhaps by humans only, is still one of the most intriguing and complex issues posing a big challenge to science. It is a question—I suggest—, which can only be answered satisfactorily with the knowledge from diverse research fields by focussing on life and its holistic dimensions. We are living in a time when millions of people still believe in horoscopes, feng shui, fortune telling, and tarot cards. For many, a new form of “quantum spirituality”, which could just as well be attributed to the presently rampant varieties of esoterism, has become a substitute for religion. The Biennial is deliberately committed to setting a counterpoint to this cheerful market of world interpretations and “weak thought” (Eduard Kaeser, NZZ, 16 May 2012), which sometimes produces rather strange effects. Top representatives from quantum physics, neuroscience, philosophy, anthropology, systems theory, ecology, and Buddhism as well as from the wide field of research about the effects of consciousness-expanding substances are invited to Lucerne. I wish you a spiritually rewarding day with many inspiring talks and conversations. Dr. Rene Stettler, Founder, Swiss Biennial on Science, Technics + Aesthetics

Joanna Southcott and the Strange Effects of Printing: Publishing Prophecies in the Early Nineteenth Century

Previous articleNext article No AccessJoanna Southcott and the Strange Effects of Printing: Publishing Prophecies in the Early Nineteenth CenturyRobert William RixRobert William RixCopenhagen University Search for more articles by this author PDFPDF PLUSFull Text Add to favoritesDownload CitationTrack CitationsPermissionsReprints Share onFacebookTwitterLinkedInRedditEmail SectionsMoreDetailsFiguresReferencesCited by History of Religions Volume 55, Number 1August 2015 Article DOIhttps://doi.org/10.1086/681804 Views: 129Total views on this site Citations: 1Citations are reported from Crossref © 2015 by The University of Chicago. All rights reserved.PDF download Crossref reports the following articles citing this article:Matthew Hale, Graham Raymond, Catherine Wright List of publications on the economic and social history of Great Britain and Ireland published in 2015, The Economic History Review 69, no.44 (Oct 2016): 1309–1365.https://doi.org/10.1111/ehr.12427

Role of strangeness in hybrid stars and possible observables

We study the effects of strangeness on the quark sector of a hybrid star equation of state. Since the model we use to describe quarks is the same as the one we use to describe hadrons, we can also study the effects of strangeness on the chiral symmetry restoration and deconfinement phase transitions (first order or crossover). Finally, we analyze combined effects of hyperons and quarks on global properties of hybrid stars, like mass, radius and cooling profiles. It is found that a large amount of strangeness in the core is related to the generation of twin-star solutions, which can have the same mass as the lower or zero strangeness counterpart, but with smaller radii.

Constraining nucleon strangeness

Determining the nonperturbative $s\bar{s}$ content of the nucleon has attracted considerable interest and been the subject of numerous experimental searches. These measurements used a variety of reactions and place important limits on the vector form factors observed in parity-violating (PV) elastic scattering and the parton distributions determined by deep inelastic scattering (DIS). In spite of this progress, attempts to relate information obtained from elastic and DIS experiments have been sparse. To ameliorate this situation, we develop an interpolating model using light-front wave functions capable of computing both DIS and elastic observables. This framework is used to show that existing knowledge of DIS places significant restrictions on our wave functions. The result is that the predicted effects of nucleon strangeness on elastic observables are much smaller than those tolerated by direct fits to PV elastic scattering data alone. Using our model, we find $-0.024 \le \mu_s \le 0.035$, and $-0.137 \le \rho^D_s \le 0.081$ for the strange contributions to the nucleon magnetic moment and charge radius. The model we develop also independently predicts the nucleon's strange spin content $\Delta s$ and scalar density $\langle N| \bar{s}s | N \rangle$, and for these we find agreement with previous determinations.

Light vector meson masses in strange hadronic matter: A QCD sum rule approach

We study the properties of the light vector mesons ($\rho$, $\omega$ and $\phi$) in strange hadronic matter using the QCD sum rule approach. The in-medium masses of the vector mesons are calculated from the modifications of the light quark condensates and the gluon condensates in the hadronic medium. The light quark condensates in the hadronic matter are obtained from the values of the non strange and strange scalar fields of the explicit chiral symmetry breaking term in a chiral SU(3) model. The in-medium gluon condensate is calculated through the medium modification of a scalar dilaton field, which is introduced into the chiral SU(3) model to simulate the scale symmetry breaking of QCD. The mass of the $\omega$ meson is observed to have initially a drop with increase in density and then a rise due to the scattering with the baryons. The mass of the $\rho$ meson is seen to drop with density due to decrease of the light quark condensates in the medium. The effects of isospin asymmetry and strangeness of the medium on the masses of the vector mesons are also studied in the present work. The $\phi$ meson is observed to have marginal drop in its mass in the nuclear medium. However, the strangeness of the medium is seen to lead to an appreciable increase in its mass arising due to scattering with the hyperons.

Dichromatism causes color variations in leaves and spices

AbstractAlthough the color phase (hue) of plants plays fundamental roles in quality of foods and horticultural species, principles of variations in hues of plant materials are neither fully understood nor extensively examined by researchers. This may be partly because plant colors are determined by complex physicochemical factors non‐understandable to most biologists. For example, hue of soluble pigment has been demonstrated to change at different thickness of a layer or pigment concentrations in exceptional substances such as pumpkin seed oil. Such strange effect (dichromatism) of layer thickness on pigment hue was previously explained by application of Beer–Lambert law on absorbance spectra (Naturwissenschaften 2007;94:935–939). In this report, we demonstrate dichromatism in plant leaves and red spices. Dichromatism of these materials can be quite simply observed by extraction and dilution of pigments with dimethylformamide, a scarcely evaporating organic solvent. Hue of pigment solutions gradually changed with dilution from green to yellow‐green for leaves, and from red to yellow for spices. These changes were also explained by changes in absorbance spectra with dilution, nevertheless spectra of absorption coefficient were stable. Dichromatism in leaves caused uniform negative correlation between lightness and hue in any plant species examined. Such correlation was successfully explained by calculation with a normalized RGB color matching function. © 2014 Wiley Periodicals, Inc. Col Res Appl, 40, 605–611, 2015

In Medium Properties of Charmed Strange Mesons in Dense Hadron ic Matter

The medium modifications of the charmed strange mesons in the dense hadronic matter are investigated within chiral SU(4) model. The charmed strange meson properties modifies due to their interactions with the nucleons, hyperons and the scalar mesons (scalar-isoscalar mesons (σ, ζ), scalar isovector meson (δ)) in the dense hadronic medium. The various parameters used in the chiral model are obtained by fitting the vacuum baryon masses and saturation properties of nuclear matter. The non-linear coupled equations of the scalar fields are solved to obtain their baryon density, isospin and strangeness dependent values. Furthermore, the dispersion relations are derived for charmed strange mesons. Effects of isospin asymmetry and strangeness on the energies of charmed strange mesons are investigated. The in medium properties of charmed strange mesons can be particularly relevant to the experiments with neutron rich beams at the Facility for Antiproton and Ion Research (FAIR) at GSI, Germany, as well as to experiments at the Rare Isotope Accelerator (RIA) laboratory, USA. The present study of the in medium properties of charmed strange mesons will be of direct relevance for the observables from the compressed baryonic matter, resulting from the heavy ion collision experiments.

3D effects of the entropic force

This work analyzes the classical statistical mechanics associated to phase-space curves in three dimensions. Special attention is paid to the entropic force. Strange effects like confinement, hard core, and asymptotic freedom are uncovered.

Phase transition and critical end point driven by an external magnetic field in asymmetric quark matter

The location of the critical end point (CEP) in the QCD phase diagram is determined under different scenarios. The effect of strangeness, isospin/charge asymmetry and an external magnetic field is investigated. The discussion is performed within the $2+1$ flavor Nambu--Jona-Lasinio model with Polyakov loop. It is shown that isospin asymmetry shifts the CEP to larger baryonic chemical potentials and smaller temperatures. At large asymmetries the CEP disappears. However, a strong enough magnetic field drives the system into a first order phase transition.

The Functions of Art in Conveying the Meanings to Audience (Case Study: Some Selected Images from the Earthquake of Bam, 2003)

Art, depending on its properties, has an expressive language and if a concept accompanies it, or being said in an artistic language, it would be eternal, too. A review of the literature shows that the artworks, directly or indirectly, reflect the philosophy and idea of the artist, by which he has created the work. Thus any art piece has a negative or positive message to his audience and would affect him in one of these two trends. The Educational outcomes of these two approaches, has a long term and strange effect on the audience. The Article in addition of analyzing these approaches in photos of the Bam earthquake, analyses the orientation of artworks being produced after that and its impact on the audience. The research results show that the art can have wide conceptual effects on the audience. The analyzed samples indicate that some of the images emphasizing the positive implications from devastations of the earthquake, associations hope and mobility to audience. On the other hand, some of the images by showing negative concepts associate despair and hopelessness. The dual and also significant impact of art works shows that during the natural disasters and damages, we can use it as a factor in improving the situation and helping injured victims.

The physics of near-infrared photography

The physics behind the sometimes strange effects and ‘unnatural’ appearance of near-infrared (NIR) photographs is discussed in terms of reflection, absorption and transmission of NIR radiation with the respective objects. Besides discussing how NIR cameras work, several visible and NIR photograph pairs are presented, which include vegetation, natural water, clouds, the sky, and humans. In addition, some physics-oriented experimental NIR images are presented which clearly demonstrate some of the basic physics behind some of these awesome sights.