Effect of longitudinal epsilon-near-zero regime in dynamics of ultrashort laser pulses in hyperbolic metamaterials

Optical properties of hyperbolic metamaterials (HMMs) are in stark contrast to properties of ordinary media that fuels interest to various applications of HMMs in photonics. Special attention is attributed to the epsilon-near zero regime (ENZ) of HMMs that is the spectral point in which real part of the permittivity of the HMM becomes zero. This is accompanied by the effects of field enhancement having far-reaching applications. Here we focus on the experimental and theoretical investigation of the propagation of an ultrashort laser pulse through the silver nanorod-based HMM slab in the spectral range over the ENZ. We revealed pronounced resonant change of the pulse delay in HMMs and the transition between the superluminal and slow pulse propagation at the ENZ spectral point. Observed dynamical phenomena are confirmed theoretically and attributed to unusual case when the spectral half of an ultrashort pulse has elliptical dispersion and another has the hyperbolic one. Special attention is payed to the propagation of chirped laser pulses in the HMMs.

Accidental Ingestion of Dental Bur during Dental Extraction

A 24-year-old female patient was admitted to the dental department of the university hospital Sahloul in Sousse in November 2019 for wisdom tooth extraction. The patient had chronic kidney failure and was on peritoneal dialysis. During the extraction, the patient had accidentally ingested the dental bur (Zekrya MANI®): the bur popped out from the airotor and fell into the patient’s throat. There were no immediate symptoms such as coughing, drooling, dyspnoea or any other symptom of respiratory distress. The patient was immediately taken to the department of radiology for abdominal radiographic investigation. She was advised to be on a diet rich of fibers (especially potato) which was impossible for our patient. In fact, potato is a main source of potassium and when kidneys fail, they can no longer remove excess potassium, which leads to hyperkalemia. Some of the effects of hyperkalemia are nausea, weakness, numbness and slow pulse.

Audit to See the Effect of Nicotine Addiction on Pulse Rate

Objective of present study was to see the effect of nicotine addiction on pulse rate. Nicotine can cause cardiovascular diseases and it also affect pulse rate by increasing its speed. So it was concluded that the docents who are addicted to tea have higher pulse rate and who are not addicted to tea they have normal or slow pulse rate.

THE FREQUENCY OF OCCURRENCE OF THE CLINICAL SYMPTOMS OF TONGUE AND PULSE ACCORDING TO TRADITIONAL MEDICINE IN SCIATICA PATIENTS

Background: Sciatica is a common disease in clinical. However, the classification of symptoms and clinical forms of traditional medicine from different literature sources is not really the same. Meanwhile the strategic development of traditional medicine Western Pacific region 2011- 2020, the World Health Organization strategy proposed building regulations, standards and practices of traditional medicine based on evidence. Therefore, in this study we contribute to build standardization of diagnostic symptoms according to traditional medicine. Objective: To survey the frequency of occurrence of the tongue and pulse symptoms clinical according to traditional medicine and find outseveral factors related to the occurrence of clinical presentation in patients with Sciatica. Methods: We recruited 132 patients has been diagnosed with sciatica based on western medicine at the Traditional Medicine department of Hue Central Hospital and Thua Thien Hue Traditional Medicine Hospital. Research methodology is descriptive cross-sectional. Results: 1. The symptoms of the tongue: About the tongue body color: 18.2% pale; 4.5% red and 1.5% bluish purple. About the tongue shape: 8.4% thin tongue; 37.2% enlarged tongue and 12.9% fissured tongue. About the tongue fur: 77.3% white fur, 22.7% yellow fur; 32.6% moist fur; 25.0% dry fur; 36.4% wet fur; 6.1% sticky slimy fur; 52.3% thin fur, 43.9% thick fur and 3.8% exfoliated fur. 2. The symptoms of the pulse: 23.5% floating pulse;67.4% sunken pulse; 30.3% slow pulse, 50.0% moderate pulse and 19.7% rapid pulse. Conclusion: Symptoms have high rate such as white fur, thin fur, sunken pulse, slow pulse. Symptoms have low rate such as bluish purple, red tongue, exfoliated fur. There were significant relationships between clinical symtoms and age, sex, disease duration and pulse frequency (p <0.05). Key words: frequency, symptoms of tongue, symptoms of palse, sciatica, traditional medicine

YELLOWNESS IS A THREAT TO NEWBORN - A REVIEW

Jaundice is a very well-known disease found worldwide. Jaundice comes from the French word “Jaune” - which means yellow. In medical term, jaundice is known as icterus which is a Greek word. This is a very common disease in the population, which causes the yellowish or greenish pigmentation in the skin and whiteness in the eyes. This is a condition of hyperbilirubinemia in which the amount of bilirubin increases in the blood. In this case, the high amount of bilirubin is found in blood, and the disruption of the movement of bilirubin into the liver and out of the body causes jaundice. Different symptoms seen in this case are yellow skin, yellow/white eyes, dark or reddish urine, loss of appetite, bitter taste of tongue, pale faces, nausea, itching in skin, anfd slow pulse rate. Jaundice may be mild to severe. Different types of jaundice are seen like normal jaundice in newborn, hepatic jaundice, and post-hepatic Jaundice.

Study on the Depth, Rate, Shape, and Strength of Pulse with Cardiovascular Simulator

Pulse diagnosis is important in oriental medicine. The purpose of this study is explaining the mechanisms of pulse with a cardiovascular simulator. The simulator is comprised of the pulse generating part, the vessel part, and the measurement part. The pulse generating part was composed of motor, slider-crank mechanism, and piston pump. The vessel part, which was composed with the aorta and a radial artery, was fabricated with silicon to implement pulse wave propagation. The pulse parameters, such as the depth, rate, shape, and strength, were simulated. With changing the mean pressure, the floating pulse and the sunken pulse were generated. The change of heart rate generated the slow pulse and the rapid pulse. The control of the superposition time of the reflected wave generated the string-like pulse and the slippery pulse. With changing the pulse pressure, the vacuous pulse and the replete pulse were generated. The generated pulses showed good agreements with the typical pulses.

Multivariate female preference tests reveal latent perceptual biases

The question of why males of many species produce elaborate mating displays has now been largely resolved: females prefer to mate with males that produce such displays. However, the question of why females prefer such displays has been controversial, with an emerging consensus that such displays often provide information to females about the direct fitness benefits that males provide to females and/or the indirect fitness benefits provided to offspring. Alternative explanations, such as production of arbitrarily attractive sons or innate pre-existing female sensory or perceptual bias, have also received support in certain taxa. Here, we describe multivariate female preference functions for male acoustic traits in two chirping species of field crickets with slow pulse rates; our data reveal cryptic female preferences for long trills that have not previously been observed in other chirping species. The trill preferences are evolutionarily pre-existing in the sense that males have not (yet?) exploited them, and they coexist with chirp preferences as alternative stable states within female song preference space. We discuss escape from neuronal adaptation as a possible mechanism underlying such latent preferences.

Widespread genetic linkage of mating signals and preferences in the Hawaiian cricket Laupala

The evolution of novel sexual communication systems is integral to the process of speciation, as it discourages gene flow between incipient species. Physical linkage between genes underlying male–female communication (i.e. sexual signals and preferences for them) facilitates both rapid and coordinated divergence of sexual communication systems between populations and reduces recombination in the face of occasional hybridization between diverging populations. Despite these ramifications of the genetic architecture of sexual communication for sexual selection and speciation, few studies have examined this relationship empirically. Previous studies of the closely related Hawaiian crickets Laupala paranigra and Laupala kohalensis have indirectly suggested that many of the genes underlying the difference in pulse rate of male song are physically linked with genes underlying the difference in female preference for pulse rate. Using marker-assisted introgression, we moved ‘slow pulse rate’ alleles from L. paranigra at five known quantitative trait loci (QTL) underlying male pulse rate into the ‘fast pulse rate’ genetic background of L. kohalensis and assessed the effect of these loci on female preference. An astounding four out of five song QTL predicted the preferences of female fourth-generation backcrosses, providing direct evidence for the extensive genetic linkage of song and preference in one of the fastest diversifying genera currently known.