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https://www.readbyqxmd.com/read/28950461/efficiency-versus-speed-in-quantum-heat-engines-rigorous-constraint-from-lieb-robinson-bound
#1
Naoto Shiraishi, Hiroyasu Tajima
A long-standing open problem whether a heat engine with finite power achieves the Carnot efficiency is investgated. We rigorously prove a general trade-off inequality on thermodynamic efficiency and time interval of a cyclic process with quantum heat engines. In a first step, employing the Lieb-Robinson bound we establish an inequality on the change in a local observable caused by an operation far from support of the local observable. This inequality provides a rigorous characterization of the following intuitive picture that most of the energy emitted from the engine to the cold bath remains near the engine when the cyclic process is finished...
August 2017: Physical Review. E
https://www.readbyqxmd.com/read/28937782/cold-water-immersion-cooling-rates-in-football-linemen-and-cross-country-runners-with-exercise-induced-hyperthermia
#2
Sandra Fowkes Godek, Katherine E Morrison, Gregory Scullin
CONTEXT:   Ideal and acceptable cooling rates in hyperthermic athletes have been established in average-sized participants. Football linemen (FBs) have a small body surface area (BSA) to mass ratio compared with smaller athletes, which hinders heat dissipation. OBJECTIVE:   To determine cooling rates using cold-water immersion in hyperthermic FBs and cross-country runners (CCs). DESIGN:   Cohort study. SETTING:   Controlled university laboratory...
September 22, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28887799/study-of-polar-organic-compounds-in-airborne-particulate-matter-of-a-coastal-urban-city
#3
Dimitra Balla, Dimitra Voutsa, Constantini Samara
Two classes of polar organic compounds, dicarboxylic acids (DCAs) and sugars/sugar anhydrides (S/SAs), were measured in airborne particulate matter in the area of Thessaloniki, northern Greece. The target compounds were measured simultaneously in two particle fractions PM10 and PM2.5 during cold and warm periods by employing extraction in an ultrasonic bath with a mixture of MeOH/DCM (1:2 v/v), derivatization with BSTFA-TMCS and GC-MS for analysis. At both fractions, phthalic was the predominant carboxylic acid during cold season and a-ketoglutaric acid in warm season, followed by maleic and malic...
September 8, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28884735/-the-spa-and-health-resort-based-treatment-of-metabolic-syndrome-with-the-application-of-the-therapeutic-courses-of-different-duration-the-evaluation-according-long-term-results
#4
E N Chalaya, L A Botvineva, L V Tsallagova, N K Ahkubekova, N V Efimenko, A S Kaysinova, V Yu Amiyants, V A Vasin
AIM: The objective of the present study was to estimate the effectiveness of the new therapeutic modalities for the spa and health resort-based treatment of metabolic syndrome based on the results of the long-term follow-up observations. MATERIAL AND METHODS: A total of 100 patients presenting with metabolic syndrome were recruited for the participation in the study. All of them underwent a shortened course of mineral water intake in the combination with the use of the herbal medicinal products...
2017: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/28859025/seizures-induced-by-exiting-water-a-unique-form-of-reflex-epilepsy
#5
Brian Appavu, Jordana Fox, Robert Little, John F Kerrigan, Makram Obeid
INTRODUCTION: Reflex epilepsies represent a form of epilepsy in which unique modes of seizure precipitation are characterized by endogenous or exogenous stimuli. Hot water epilepsy represents a subtype of reflex epilepsy in which seizure precipitation arises from the act of immersing the head with hot water. Bathing epilepsy represents another subtype of reflex epilepsy in which seizure precipitation arises from the immersion with water at lukewarm temperatures. CASE SERIES: We report on 2 boys with a unique form of bathing epilepsy characterized by the act of exiting out of water...
September 2017: Neurologist
https://www.readbyqxmd.com/read/28789677/cold-adaptation-aging-and-korean-women-divers-haenyeo
#6
REVIEW
Joo-Young Lee, Joonhee Park, Siyeon Kim
BACKGROUND: We have been studying the thermoregulatory responses of Korean breath-hold women divers, called haenyeo, in terms of aging and cold adaptation. During the 1960s to the 1980s, haenyeos received attention from environmental physiologists due to their unique ability to endure cold water while wearing only a thin cotton bathing suit. However, their overall cold-adaptive traits have disappeared since they began to wear wetsuits and research has waned since the 1980s. For social and economic reasons, the number of haenyeos rapidly decreased to 4005 in 2015 from 14,143 in 1970 and the average age of haenyeos is about 75 years old at present...
August 8, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28772623/influence-of-the-manufacturing-process-on-defects-in-the-galvanized-coating-of-high-carbon-steel-wires
#7
Marcello Gelfi, Luigi Solazzi, Sandro Poli
This study is a detailed failure analysis of galvanized high carbon steel wires, which developed coating cracks during the torsion test performed as a quality control at the end of the manufacturing process. Careful visual inspections showed that the cracks are already present in the coating before the torsion test. In order to explain the origin of these cracks, systematic metallographic investigations were performed by means of optical and scanning electron microscope on both the wires and the rods that have been cold drawn to produce the wire...
March 6, 2017: Materials
https://www.readbyqxmd.com/read/28732926/intensified-oxalic-acid-crystallization-using-ultrasonic-reactors-understanding-effect-of-operating-parameters-and-type-of-ultrasonic-reactor
#8
Rakhi S Vishwakarma, Parag R Gogate
The present work reports the comparison of the effectiveness of ultrasonic bath and horn for intensifying the cooling crystallization of oxalic acid for the first time. The effect of various parameters such as temperature, crystallization time, irradiation time, ultrasonic frequency and ultrasonic power on the crystal characteristics has been investigated. The average particle size of oxalic acid crystals reduced with an increase in irradiation time and ultrasonic power dissipation. Comparison of crystal characteristics obtained in ultrasonic bath with that obtained in the ultrasonic horn under optimized parameters revealed that the average size in the case of ultrasonic horn and bath were only marginally different...
November 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28496414/the-systematic-bias-of-ingestible-core-temperature-sensors-requires-a-correction-by-linear-regression
#9
Andrew P Hunt, Aaron J E Bach, David N Borg, Joseph T Costello, Ian B Stewart
An accurate measure of core body temperature is critical for monitoring individuals, groups and teams undertaking physical activity in situations of high heat stress or prolonged cold exposure. This study examined the range in systematic bias of ingestible temperature sensors compared to a certified and traceable reference thermometer. A total of 119 ingestible temperature sensors were immersed in a circulated water bath at five water temperatures (TEMP A: 35.12 ± 0.60°C, TEMP B: 37.33 ± 0.56°C, TEMP C: 39...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28485962/collisional-intermolecular-energy-transfer-from-a-n2-bath-at-room-temperature-to-a-vibrationlly-cold-c6f6-molecule-using-chemical-dynamics-simulations
#10
Amit K Paul, Diego Donzis, William L Hase
Chemical dynamics simulations were performed to study collisional intermolecular energy transfer from a thermalized N2 bath at 300 K to vibrationally "cold" C6F6. The vibrational temperature of C6F6 is taken as 50 K, which corresponds to a classical vibrational energy of 2.98 kcal/mol. The temperature ratio between C6F6 and the bath is 1/6, the reciprocal of the same ratio for previous "hot" C6F6 simulations (J. Chem. Phys. 2014, 140, 194103). Simulations were also done for a C6F6 vibrational temperature of 0 K...
May 19, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28432932/surveillance-of-vittaforma-corneae-in-hot-springs-by-a-small-volume-procedure
#11
Jung-Sheng Chen, Tsui-Kang Hsu, Bing-Mu Hsu, Tung-Yi Huang, Yu-Li Huang, Men-Fang Shaio, Dar-Der Ji
Vittaforma corneae is an obligate intracellular fungus and can cause human ocular microsporidiosis. Although accumulating reports of V. corneae causing keratoconjunctivitis in both healthy and immunocompromised persons have been published, little is known about the organism's occurrence in aquatic environments. Limitations in detection sensitivity have meant a large sampling volume is required to detect the pathogen up to now, which is problematic. A recent study in Taiwan has shown that some individuals suffering from microsporidial keratitis (MK) were infected after exposure to the pathogen at a hot spring...
July 1, 2017: Water Research
https://www.readbyqxmd.com/read/28421715/effect-of-water-bath-temperature-on-physiological-parameters-and-subjective-sensation-in-older-people
#12
Junji Ono, Nobuko Hashiguchi, Hiroyuki Sawatari, Tomoko Ohkusa, Mami Miyazono, Su-Young Son, Chie Magota, Yutaka Tochihara, Akiko Chishaki
AIM: In Japan, the incidence of water bathing-related cardiopulmonary accidents among older people is high in winter. The purpose of the present study was to investigate alterations in physiological characteristics and subjective thermal sensations of older people when bathing in a cool environment. METHODS: We assessed the skin temperature, rectal temperature, blood pressure, pulse rate, body fluid loss (sweat and urine), and subjective thermal responses of 11 older healthy male and 10 young male volunteers throughout 42°C and 39°C bathing in a room at 20°C with 50% humidity...
April 19, 2017: Geriatrics & Gerontology International
https://www.readbyqxmd.com/read/28415299/measurement-induced-operation-of-two-ion-quantum-heat-machines
#13
Suman Chand, Asoka Biswas
We show how one can implement a quantum heat machine by using two interacting trapped ions, in presence of a thermal bath. The electronic states of the ions act like a working substance, while the vibrational mode is modelled as the cold bath. The heat exchange with the cold bath is mimicked by the projective measurement of the electronic states. We show how such measurement in a suitable basis can lead to either a quantum heat engine or a refrigerator, which undergoes a quantum Otto cycle. The local magnetic field is adiabatically changed during the heat cycle...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28362423/ice-generation-and-the-heat-and-mass-transfer-phenomena-of-introducing-water-to-a-cold-bath-of-brine
#14
Xiao Yun, Giuseppe L Quarini
We demonstrate a method for the study of the heat and mass transfer and of the freezing phenomena in a subcooled brine environment. Our experiment showed that, under the proper conditions, ice can be produced when water is introduced to a bath of cold brine. To make ice form, in addition to having the brine and water mix, the rate of heat transfer must bypass that of mass transfer. When water is introduced in the form of tiny droplets to the brine surface, the mode of heat and mass transfer is by diffusion...
March 13, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28362367/sublimation-of-dan-matrix-for-the-detection-and-visualization-of-gangliosides-in-rat-brain-tissue-for-maldi-imaging-mass-spectrometry
#15
Sarah Caughlin, Dae Hee Park, Ken K-C Yeung, David F Cechetto, Shawn N Whitehead
Sample preparation is key for optimal detection and visualization of analytes in Matrix-assisted Laser Desorption/Ionization (MALDI) Imaging Mass Spectrometry (IMS) experiments. Determining the appropriate protocol to follow throughout the sample preparation process can be difficult as each step must be optimized to comply with the unique characteristics of the analytes of interest. This process involves not only finding a compatible matrix that can desorb and ionize the molecules of interest efficiently, but also selecting the appropriate matrix deposition technique...
March 23, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28353028/decreased-memory-confidence-in-obsessive-compulsive-disorder-for-scenarios-high-and-low-on-responsibility-is-low-still-too-high
#16
Steffen Moritz, Anne Jaeger
Previous research suggests that patients with obsessive-compulsive disorder (OCD), particularly checkers, display an inflated sense of responsibility. For the present study, we tested whether memory confidence in OCD is reduced under conditions of heightened responsibility and/or reflects poor memory vividness. A computerized task designed to modulate perceived responsibility was administered to 26 OCD patients (12 checkers) and 21 healthy controls. In the experimental condition (high responsibility), participants had to allocate daily medications to ten fictive patients in a hospital emergency ward, whereas in the control condition (low responsibility) participants had to allocate bath essences for ten hotel guests...
March 28, 2017: European Archives of Psychiatry and Clinical Neuroscience
https://www.readbyqxmd.com/read/28236614/treatment-of-athlete-s-plantar-warts-using-a-botanical-blend-a-case-report
#17
Erik O Nelson, Adam F Kozin, Guillermo Ruiz, Arben Lasku, Jeffrey O Langland
Context • Viral plantar warts, or verruca plantaris, are a benign epithelial tumor caused by various strains of the human papilloma virus (HPV). Current treatments have had mixed degrees of success, are moderately invasive, and are often incompatible with participation in sports. Objective • The study intended to examine the benefits of treating plantar warts with a topical, botanical blend that has had clinical success treating herpes simplex virus cold sores. Methods • A synergistic botanical blend was applied topically...
May 2017: Alternative Therapies in Health and Medicine
https://www.readbyqxmd.com/read/28150163/fatigue-and-recovery-in-rugby-a-review
#18
REVIEW
Francisco Tavares, Tiaki Brett Smith, Matthew Driller
The physical demands and combative nature of rugby lead to notable levels of muscle damage. In professional rugby, athletes only have a limited timeframe to recover following training sessions and competition. Through the implementation of recovery strategies, sport scientists, practitioners and coaches have sought to reduce the effect of fatigue and allow athletes to recover faster. Although some studies demonstrate that recovery strategies are extensively used by rugby athletes, the research remains equivocal concerning the efficacy of recovery strategies in rugby...
August 2017: Sports Medicine
https://www.readbyqxmd.com/read/27994497/menthol-inhibiting-parasympathetic-function-of-tracheal-smooth-muscle
#19
Hsing-Won Wang, Shao-Cheng Liu, Pin-Zhir Chao, Fei-Peng Lee
Menthol is used as a constituent of food and drink, tobacco and cosmetics nowadays. This cold receptor agonist has been used as a nasal inhalation solution in the daily life. The effect of menthol on nasal mucosa in vivo is well known; however, the effect of the drug on tracheal smooth muscle has been rarely explored. Therefore, during administration of the drug for nasal symptoms, it might also affect the trachea via oral intake or inhalation. We used our preparation to test the effectiveness of menthol on isolated rat tracheal smooth muscle...
2016: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/27991663/is-the-ice-bath-finally-melting-cold-water-immersion-is-no-greater-than-active-recovery-upon-local-and-systemic-inflammatory-cellular-stress-in-humans
#20
R Allan, C Mawhinney
No abstract text is available yet for this article.
March 15, 2017: Journal of Physiology
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