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Body temperature

Celine Tasset, Avilash Singh Yadav, Sridevi Sureshkumar, Rupali Singh, Lennard van der Woude, Maxim Nekrasov, David Tremethick, Martijn van Zanten, Sureshkumar Balasubramanian
Ambient temperature affects plant growth and even minor changes can substantially impact crop yields. The underlying mechanisms of temperature perception and response are just beginning to emerge. Chromatin remodeling, via the eviction of the histone variant H2A.Z containing nucleosomes, is a critical component of thermal response in plants. However, the role of histone modifications remains unknown. Here, through a forward genetic screen, we identify POWERDRESS (PWR), a SANT-domain containing protein known to interact with HISTONE DEACETYLASE 9 (HDA9), as a novel factor required for thermomorphogenesis in Arabidopsis thaliana...
March 16, 2018: PLoS Genetics
Lei Liu, Jun Ma, Qiang Xue, Jingbang Shao, Yijun Chen, Gang Zeng
The optimization design of well spacing (WS) and aeration rate (AR) is crucial to the in situ aeration system operation in under long-term and high-efficiency conditions. This optimization design aims to transport additional air into landfills and to develop an improved oxygen environment for enhancing aerobic degradation. Given the specific pore structure distribution within landfills, providing sufficient oxygen in all waste bodies in field sites through gas wells is difficult. The design of well distribution also lacks adequate criteria...
March 12, 2018: Waste Management
Andrew Best, Jason M Kamilar
Sweating is an unusual thermoregulatory strategy for most mammals, yet is critical for humans. This trait is commonly hypothesized to result from human ancestors moving from a forest to a warmer and drier open environment. As soft tissue traits do not typically fossilize, this idea has been difficult to test. Therefore, we used a comparative approach to examine 15 eccrine gland traits from 35 primate species. For each trait we measured phylogenetic signal, tested three evolutionary models to explain trait variation, and used phylogenetic models to examine how traits varied in response to climate variables...
April 2018: Journal of Human Evolution
Shigeki Kushimoto, Satoshi Gando, Hiroshi Ogura, Yutaka Umemura, Daizoh Saitoh, Toshihiko Mayumi, Seitaro Fujishima, Toshikazu Abe, Atsushi Shiraishi, Hiroto Ikeda, Joji Kotani, Yasuo Miki, Shin-Ichiro Shiraishi, Koichiro Suzuki, Yasushi Suzuki, Naoshi Takeyama, Kiyotsugu Takuma, Ryosuke Tsuruta, Yoshihiro Yamaguchi, Norio Yamashita, Naoki Aikawa
BACKGROUND: Although the quick Sequential Organ Failure Assessment (qSOFA) has been recommended for identifying patients at higher risk of hospital death, it has only a 60% sensitivity for in-hospital mortality. On the other hand, hypothermia associates with increased mortality and organ failure in patients with sepsis. This study aimed to assess the predictive validity of qSOFA for identifying patients with sepsis at higher risk of multiple organ dysfunction or death and the complementary effect of hypothermia...
January 1, 2018: Journal of Intensive Care Medicine
Shuai Zhang, Burkhard Militzer, Lorin X Benedict, François Soubiran, Philip A Sterne, Kevin P Driver
Carbon-hydrogen plasmas and hydrocarbon materials are of broad interest to laser shock experimentalists, high energy density physicists, and astrophysicists. Accurate equations of state (EOSs) of hydrocarbons are valuable for various studies from inertial confinement fusion to planetary science. By combining path integral Monte Carlo (PIMC) results at high temperatures and density functional theory molecular dynamics results at lower temperatures, we compute the EOSs for hydrocarbons from simulations performed at 1473 separate (ρ, T)-points distributed over a range of compositions...
March 14, 2018: Journal of Chemical Physics
Yang Jin, Xiaolong An, Mingqiao Ge
In this study, we fabricated a heat-stimulated luminous fiber (HSLF) by wet spinning. The HSLF consists of Sr₂ZnSi₂O₇: Eu2+ , Dy3+ (SZSO), Y₂O₂S: Eu3+ , Mg2+ , Ti4+ (YOS), and heat-sensitive green TF-G pigment (HSGP). SZSO and YOS serve as a source of luminescence to yield a long afterglow system. HSGP is a heat-stimulating agent which develops the link between luminescence and temperature for HSLF. The luminescence of the HSLF is dull below 30 °C, but vivid above 30 °C. The luminescence of HSLFs can be stimulated by low heat (human body temperature)...
March 15, 2018: Materials
Nazim Boudjada, Gideon Wachtel, Arun Paramekanti
Recent experiments have explored two-dimensional electron gases (2DEGs) at oxide (111) surfaces and interfaces, finding evidence for hexagonal symmetry breaking in SrTiO_{3} at low temperature. We discuss many-body instabilities of such (111) 2DEGs, incorporating multiorbital interactions in the t_{2g} manifold which can induce diverse magnetic and orbital orders. Such broken symmetries may partly account for the observed nematicity, cooperating or competing with phonon mechanisms. We present an effective field theory for the interplay of magnetism and nematic charge order, and discuss implications of the nematicity for transport and superconductivity in (111) 2DEGs...
February 23, 2018: Physical Review Letters
Ken Xuan Wei, Chandrasekhar Ramanathan, Paola Cappellaro
Characterizing out-of-equilibrium many-body dynamics is a complex but crucial task for quantum applications and understanding fundamental phenomena. A central question is the role of localization in quenching thermalization in many-body systems and whether such localization survives in the presence of interactions. Probing this question in real systems necessitates the development of an experimentally measurable metric that can distinguish between different types of localization. While it is known that the localized phase of interacting systems [many-body localization (MBL)] exhibits a long-time logarithmic growth in entanglement entropy that distinguishes it from the noninteracting case of Anderson localization (AL), entanglement entropy is difficult to measure experimentally...
February 16, 2018: Physical Review Letters
Philipp T Dumitrescu, Romain Vasseur, Andrew C Potter
We simulate the dynamics of a disordered interacting spin chain subject to a quasiperiodic time-dependent drive, corresponding to a stroboscopic Fibonacci sequence of two distinct Hamiltonians. Exploiting the recursive drive structure, we can efficiently simulate exponentially long times. After an initial transient, the system exhibits a long-lived glassy regime characterized by a logarithmically slow growth of entanglement and decay of correlations analogous to the dynamics at the many-body delocalization transition...
February 16, 2018: Physical Review Letters
Maxim Avanesov, Nis Jesper Wiese, Murat Karul, Helena Guerreiro, Sarah Keller, Philip Busch, Frank Jacobsen, Gerhard Adam, Jin Yamamura
OBJECTIVES: To develop a routinely applicable severity index for the management of acute appendicitis in adults using combined clinical and radiological parameters and retroperitoneal space planes (RSP). METHODS: Two hundred consecutive patients with histologically proven acute appendicitis and available presurgical CT scans were analysed retrospectively. Two radiologists assessed all CT scans for morphologic sings of appendicitis and six RSP. Clinical parameters were age, body temperature, C-reactive protein (CRP), white blood cell count, and duration of symptoms...
March 14, 2018: European Radiology
Jaya Kumar, Srijit Das, Seong Lin Teoh
Acrylamide (AA) is a water soluble white crystalline solid commonly used in industries. It was listed as an industrial chemical with potential carcinogenic properties. However to date, AA was used to produce polyacrylamide polymer, which was widely used as a coagulant in water treatment; additives during papermaking; grouting material for dams, tunnels, and other underground building constructions. AA in food could be formed during high-temperature cooking via several mechanisms, i.e., formation via acrylic acid which may be derived from the degradation of lipid, carbohydrates, or free amino acids; formation via the dehydration/decarboxylation of organic acids (malic acid, lactic acid, and citric acid); and direct formation from amino acids...
2018: Frontiers in Nutrition
Nur S Ibrahim, Chee K Chen, Ayunizma Ayub, Ayu S Muhamad
Introduction: Lysozyme is one of the salivary antimicrobial proteins which act as the "first line of defence" at the mucosal surface. The effects of prolonged exercise in the hot and cool environments among recreational athletes on salivary lysozyme responses are very limited in the literature, especially in the Asian countries. Objective: To determine the effects of prolonged running in the hot and cool environments on selected physiological parameters and salivary lysozyme responses among recreational athletes...
December 2017: Journal of Exercise Science and Fitness
Trung Bui, Thanh-Son Dao, Truong-Giang Vo, Miquel Lürling
Warming climate is predicted to promote cyanobacterial blooms but the toxicity of cyanobacteria under global warming is less well studied. We tested the hypothesis that raising temperature may lead to increased growth rates but to decreased microcystin (MC) production in tropical Microcystis strains. To this end, six Microcystis strains were isolated from different water bodies in Southern Vietnam. They were grown in triplicate at 27 °C (low), 31 °C (medium), 35 °C (high) and 37 °C (extreme). Chlorophyll-a-, particle- and MC concentrations as well as dry-weights were determined...
March 14, 2018: Toxins
Michael E Wyde, Thomas L Horn, Myles H Capstick, John M Ladbury, Galen Koepke, Perry F Wilson, Grace E Kissling, Matthew D Stout, Niels Kuster, Ronald L Melnick, James Gauger, John R Bucher, David L McCormick
Radiofrequency radiation (RFR) causes heating, which can lead to detrimental biological effects. To characterize the effects of RFR exposure on body temperature in relation to animal size and pregnancy, a series of short-term toxicity studies was conducted in a unique RFR exposure system. Young and old B6C3F1 mice and young, old, and pregnant Harlan Sprague-Dawley rats were exposed to Global System for Mobile Communication (GSM) or Code Division Multiple Access (CDMA) RFR (rats = 900 MHz, mice = 1,900 MHz) at specific absorption rates (SARs) up to 12 W/kg for approximately 9 h a day for 5 days...
March 14, 2018: Bioelectromagnetics
Taeyoung Yoo, Keun Ho Yang, Jungbin Kim, Inseok Park, Hyunjin Cho, Geumhee Gwak, Byung Noe Bae, Ki Hwan Kim
Purpose: The aim of this study is to determine the predictable factors that affect the clinical course, especially the hospital stay, the operation performed, and to determine factors that will be helpful in deciding whether in-hospital or outpatient treatment is appropriate. Methods: We retrospectively collected medical data for patients who had been diagnosed with acute diverticulitis at Inje University Sanggye Paik Hospital between January and December 2016. In total, 117 patients were enrolled in this study...
February 2018: Annals of Coloproctology
Joshua S Elmore, Michael H Baumann
Naphthalen-1-yl-(1-pentylindol-3-yl)methanone (JWH-018) is a synthetic compound found in psychoactive "spice" products that activates cannabinoid receptors. Preclinical evidence suggests that exposure to synthetic cannabinoids increases 5-HT2A/2C receptor function in the brain, an effect which might contribute to psychotic symptoms. Here, we hypothesized that repeated exposures to JWH-018 would enhance behavioral responsiveness to the 5-HT2A/2C receptor agonist DOI. Male Sprague-Dawley rats fitted with subcutaneously (sc) temperature transponders received daily injections of JWH-018 (1...
2018: Frontiers in Psychiatry
Patrick J Lindsay, Danielle Buell, Damon C Scales
BACKGROUND: Mild therapeutic hypothermia (TH), or targeted temperature management, improves survival and neurological outcomes in patients after out-of-hospital cardiac arrest (OHCA). International guidelines strongly support initiating TH for all eligible individuals presenting with OHCA; however, the timing of cooling initiation remains uncertain. This systematic review and meta-analysis was conducted with all available randomised controlled trials (RCTs) included to explore the efficacy and safety of initiating pre-hospital TH in patients with OHCA...
March 13, 2018: Critical Care: the Official Journal of the Critical Care Forum
Tomasz Zbigniew Osmałek, Anna Froelich, Barbara Jadach, Marek Krakowski
Purpose Most of the studies concerning gellan have been focused on its application as a food ingredient, however, gellan is often considered as a candidate for the development of novel pharmaceutical formulations. Taking into account that gellan is ion-sensitive, it can be assumed that its initial mechanical properties can change upon contact with body secretions. Therefore, the aim of the work was to investigate the rheological properties of pure high-acyl gellan gum hydrogel (0.4%) and its mixtures with selected simulated body fluids...
January 1, 2018: Journal of Biomaterials Applications
Mohd Firdaus Mohd Radi, Jamal Hisham Hashim, Mohd Hasni Jaafar, Rozita Hod, Norfazilah Ahmad, Azmawati Binti Mohammed Nawi, Gul Muhammad Baloch, Rohaida Ismail, Nur Izzah Farakhin Ayub
Severe floods increase the risk of leptospirosis outbreaks in endemic areas. This study determines the spatial-temporal distribution of leptospirosis in relation to environmental factors after a major flooding event in Kelantan, Malaysia. We conducted a cross-sectional study involving incident leptospirosis cases, from the 3 months before, during, and three months after flood, in reference to the severe 2014 Kelantan flooding event. Geographical information system was used to determine the spatial distribution while climatic factors that influenced the cases were also analyzed...
March 12, 2018: American Journal of Tropical Medicine and Hygiene
J F Tornero-Aguilera, José Juan Robles-Pérez, Vicente Javier Clemente-Suárez
Previous studies have shown that actuate stress have a negative effect on working memory, visio-spatial ability and symptoms of disassociation. We conducted the present research with the aim of to analyse the effect of experience and training in psychophysiological response, attention and memory of soldiers in combat. Variables of blood lactate, blood glucose, blood oxygen saturation, body temperature, heart rate, lower body muscular strength manifestation, autonomic modulation, cortical arousal, cognitive and somatic anxiety, and memory by a post mission questionnaire were analysed before and after a combat simulation in 49 soldiers of Spanish Army...
March 12, 2018: Journal of Medical Systems
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