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https://www.readbyqxmd.com/read/29168072/estimates-for-the-acoustical-stimulation-and-heating-of-multiphase-biotissue
#1
T I Zohdi, R Krone
Low-intensity, unfocused, ultrasound-induced diathermy can produce undesired temperature increases at the interface of adjacent tissues within the body; particularly, at the interface of soft tissue and bone. This study provides a computational framework for predicting an upper bound on the temperature profile within a multiphase system composed of gel pad (water), tissue and bone from an input of acoustic energy, at frequencies and power levels consistent with applications of therapeutic hyperthermia. The model consists of solving a (one-dimensional) spatially discretized bioheat transfer equation via finite-difference method and updating the solution in time with a forward-Euler scheme...
November 22, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/29167812/data-for-occupancy-internal-heat-gain-calculation-in-main-building-categories
#2
Kaiser Ahmed, Jarek Kurnitski, Bjarne Olesen
Heat losses from occupant body by means of convection, radiation, vapor, and sweat are essential data for indoor climate and energy simulations. Heat losses depend on the metabolic activity and body surface area. Higher variations of body surface area of occupants are observed in day care centers, kinder gardens and schools compared to other building categories (Tables 2 and 3) and these variations need to be accounted, otherwise in these building categories heat gains, CO2 and humidity generation are overestimated...
December 2017: Data in Brief
https://www.readbyqxmd.com/read/29167352/two-spatially-distinct-kinesin-14-pkl1-and-klp2-generate-collaborative-inward-forces-against-kinesin-5-cut7-in-s-pombe
#3
Masashi Yukawa, Yusuke Yamada, Tomoaki Yamauchi, Takashi Toda
Kinesin motors play central roles in bipolar spindle assembly. In many eukaryotes, spindle pole separation is driven by Kinesin-5 that generates outward force. This outward force is balanced by antagonistic inward force elicited by Kinesin-14 and/or Dynein. In fission yeast, two Kinesin-14s, Pkl1 and Klp2, play an opposing role against Kinesin-5/Cut7. However, how these two Kinesin-14s coordinate individual activities remains elusive. Here we show that while deletion of either pkl1 or klp2 rescues temperature sensitive cut7 mutants, only pkl1 deletion can bypass the lethality caused by cut7 deletion...
November 22, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/29166910/prevalence-and-genetic-diversity-analysis-of-human-coronaviruses-among-cross-border-children
#4
Peilin Liu, Lei Shi, Wei Zhang, Jianan He, Chunxiao Liu, Chunzhong Zhao, Siu Kai Kong, Jacky Fong Chuen Loo, Dayong Gu, Longfei Hu
BACKGROUND: More than a decade after the outbreak of human coronaviruses (HCoVs) SARS in Guangdong province and Hong Kong SAR of China in 2002, there is still no reoccurrence, but the evolution and recombination of the coronaviruses in this region are still unknown. Therefore, surveillance on the prevalence and the virus variation of HCoVs circulation in this region is conducted. METHODS: A total of 3298 nasopharyngeal swabs samples were collected from cross-border children (<6 years, crossing border between Southern China and Hong Kong SAR) showing symptoms of respiratory tract infection, such as fever (body temperature > 37...
November 22, 2017: Virology Journal
https://www.readbyqxmd.com/read/29165551/evolution-and-ecology-of-plant-architecture-integrating-insights-from-the-fossil-record-extant-morphology-developmental-genetics-and-phylogenies
#5
Guillaume Chomicki, Mario Coiro, Susanne S Renner
Background: In contrast to most animals, plants have an indeterminate body plan, which allows them to add new body parts during their lifetime. A plant's realized modular construction is the result of exogenous constraints and endogenous processes. This review focuses on endogenous processes that shape plant architectures and their evolution. Scope: The phylogenetic distribution of plant growth forms across the phylogeny implies that body architectures have originated and been lost repeatedly, being shaped by a limited set of genetic pathways...
November 19, 2017: Annals of Botany
https://www.readbyqxmd.com/read/29165340/impacts-of-low-temperature-on-the-teleost-immune-system
#6
REVIEW
Quinn H Abram, Brian Dixon, Barbara A Katzenback
As poikilothermic vertebrates, fish can experience changes in water temperature, and hence body temperature, as a result of seasonal changes, migration, or efflux of large quantities of effluent into a body of water. Temperature shifts outside of the optimal temperature range for an individual fish species can have negative impacts on the physiology of the animal, including the immune system. As a result, acute or chronic exposure to suboptimal temperatures can impair an organisms' ability to defend against pathogens and thus compromise the overall health of the animal...
November 22, 2017: Biology
https://www.readbyqxmd.com/read/29164779/characterization-of-the-interaction-forces-in-a-drug-carrier-complex-of-doxorubicin-with-a-drug-binding-peptide
#7
Gergana Gocheva, Nina Ilieva, Kalina Peneva, Anela Ivanova
Polypeptide-based materials are used as building blocks for drug delivery systems aimed at toxicity decrease of chemotherapeutics. A molecular-level approach is adopted for investigating the non-covalent interactions between doxorubicin and a recently synthesized drug-binging peptide as a key part of a system for delivery to neoplastic cells. MD simulations in aqueous solution at room and body temperature are applied to investigate the structure and the binding modes within the drug-peptide complex. The tryptophans are outlined as the main chemotherapeutic adsorption sites and the importance of their placement in the peptide sequence is highlighted...
November 22, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/29162267/the-prehospital-management-of-hypothermia-an-up-to-date-overview
#8
REVIEW
Frederike J C Haverkamp, Gordon G Giesbrecht, Edward C T H Tan
BACKGROUND: Accidental hypothermia concerns a body core temperature of less than 35°C without a primary defect in the thermoregulatory system. It is a serious threat to prehospital patients and especially injured patients, since it can induce a vicious cycle of the synergistic effects of hypothermia, acidosis and coagulopathy; referred to as the trauma triad of death. To prevent or manage deterioration of a cold patient, treatment of hypothermia should ideally begin prehospital. Little effort has been made to integrate existent literature about prehospital temperature management...
November 4, 2017: Injury
https://www.readbyqxmd.com/read/29162142/-heatpac-a-phase-ii-randomized-study-of-concurrent-thermochemoradiotherapy-versus-chemoradiotherapy-alone-in-locally-advanced-pancreatic-cancer
#9
Niloy Ranjan Datta, Bernhard Pestalozzi, Pierre-Alain Clavien, Alexander Siebenhüner, Emsad Puric, Shaka Khan, Christoph Mamot, Oliver Riesterer, Jürg Knuchel, Cäcilia Sophie Reiner, Stephan Bodis
BACKGROUND: Pancreatic cancer has a dismal prognosis with 5-year overall survival rate of around 5%. Although surgery is still the best option in operable cases, majority of the patients who present in locally advanced stages are deemed inoperable. Novel approaches are therefore needed for the management of around 80% of these inoperable locally advanced pancreatic cancers (LAPC). Hyperthermia (39-43 °C) is a potent radiosensitizer and further enhances the action of gemcitabine, also a known radiosensitizer...
November 21, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/29161748/whole-body-cryotherapy-as-a-recovery-technique-after-exercise-a-review-of-the-literature
#10
Catriona Rose, Kate M Edwards, Jason Siegler, Kenneth Graham, Corinne Caillaud
This review aims to evaluate the current body of literature investigating the effect of whole body cryotherapy on recovery after exercise. A systematic search was conducted to investigate the effect of whole body cryotherapy (WBC, exposure to temperatures between -110 to -190°C) on markers of recovery after damaging exercise in healthy, physically active subjects. Of the 16 eligible articles extracted, ten induced muscle damage using controlled exercise in a laboratory setting, while six induced damage during sport-specific training...
November 21, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29161616/the-deceleration-of-a-spherical-projectile-passing-through-porcine-organs-at-laboratory-temperature-16%C3%A2-%C3%A2-c-and-core-body-temperature-37%C3%A2-%C3%A2-c
#11
Caitlin Humphrey, Maciej Henneberg, Christian Wachsberger, Jaliya Kumaratilake
No abstract text is available yet for this article.
November 18, 2017: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/29160925/effects-of-swaddled-and-traditional-tub-bathing-methods-on-crying-and-physiological-responses-of-newborns
#12
Sinem Yalnızoğlu Çaka, Duygu Gözen
PURPOSE: The purpose of this study was to examine the effects of two bathing methods on crying duration and physiological measurements of newborns. DESIGN AND METHODS: A randomized trial design was used in this study. The sample consisted of newborns (n = 80) who were admitted to neonatal intensive care unit of a university hospital located in a large city. The groups were determined as swaddled bathing (SB) (n = 40) and traditional tub bathing (TTB) (n = 40) by using random number table...
November 21, 2017: Journal for Specialists in Pediatric Nursing: JSPN
https://www.readbyqxmd.com/read/29159490/-prewarming-according-to-the-awmf-s3-guidelines-on-preventing-inadvertant-perioperative-hypothermia-2014-retrospective-analysis-of-7786-patients
#13
R Grote, A J Wetz, A Bräuer, M Menzel
BACKGROUND: Inadvertent perioperative hypothermia, which is defined as a core body temperature of less than 36.0 °C, can have serious consequences in surgery patients. These include cardiac complications, increased blood loss, wound infections and postoperative shivering; therefore, the scientific evidence that inadvertent perioperative hypothermia should be avoided is undisputed and several national guidelines have been published summarizing the scientific evidence and recommending specific procedures...
November 20, 2017: Der Anaesthesist
https://www.readbyqxmd.com/read/29159177/effectiveness-of-chinese-herbal-medicine-combined-with-antibiotics-for-extensively-drug-resistant-enterobacteria-and-nonfermentative-bacteria-infection-real-life-experience-in-a-retrospective-cohort
#14
Yangping Cai, Qing Zhang, Yuefeng Fu, Li Li, Ning Zhao, Aiping Lu, Qingquan Liu, Miao Jiang
Chinese herbal medicines (CHMs) have been successfully used in the treatment of infectious diseases, yet the effectiveness of CHMs for extensively drug-resistant enterobacteria (XDRE) infection remains unclear. Herein we developed a retrospective multicenter study including 766 patients with XDRE and nonfermentative bacteria (NFB) infection to investigate the effectiveness of CHMs combined with antibiotics in the treatment of XDRE infections in clinical daily practice in a cohort of patients and compared the regular antibiotics monotherapy...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29158992/hrv-derived-data-similarity-and-distribution-index-based-on-ensemble-neural-network-for-measuring-depth-of-anaesthesia
#15
Quan Liu, Li Ma, Ren-Chun Chiu, Shou-Zen Fan, Maysam F Abbod, Jiann-Shing Shieh
Evaluation of depth of anaesthesia (DoA) is critical in clinical surgery. Indices derived from electroencephalogram (EEG) are currently widely used to quantify DoA. However, there are known to be inaccurate under certain conditions; therefore, experienced anaesthesiologists rely on the monitoring of vital signs such as body temperature, pulse rate, respiration rate, and blood pressure to control the procedure. Because of the lack of an ideal approach for quantifying level of consciousness, studies have been conducted to develop improved methods of measuring DoA...
2017: PeerJ
https://www.readbyqxmd.com/read/29158126/physiological-and-behavioral-responses-of-an-arboreal-mammal-to-smoke-and-charcoal-ash-substrate
#16
Julia Nowack, Clare Stawski, Gerhard Körtner, Fritz Geiser
The recent observation that torpor plays a key role in post-fire survival has been mainly attributed to the reduced food resources after fires. However, some of these adjustments can be facilitated or amplified by environmental changes associated with fires, such as the presence of a charcoal-ash substrate. In a previous experiment on a small terrestrial mammal the presence of charcoal and ash linked to food restriction intensified torpor use. However, whether fire cues also act as a trigger of torpor use when food is available and whether they affect other species including arboreal mammals remains elusive...
November 17, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/29157359/countercurrent-heat-exchange-and-thermoregulation-during-blood-feeding-in-kissing-bugs
#17
Chloé Lahondère, Teresita C Insausti, Rafaela Mm Paim, Xiaojie Luan, George Belev, Marcos H Pereira, Juan P Ianowski, Claudio R Lazzari
Blood-sucking insects experience thermal stress at each feeding event on endothermic vertebrates. We used thermography to examine how kissing-bugs Rhodnius prolixus actively protect themselves from overheating. During feeding, these bugs sequester and dissipate the excess heat in their heads while maintaining an abdominal temperature close to ambient. We employed a functional-morphological approach, combining histology, µCT and X-ray-synchrotron imaging to shed light on the way these insects manage the flow of heat across their bodies...
November 21, 2017: ELife
https://www.readbyqxmd.com/read/29157042/head-out-immersion-in-hot-water-increases-serum-bdnf-in-healthy-males
#18
Daisuke Kojima, Takeshi Nakamura, Motohiko Banno, Yasunori Umemoto, Tokio Kinoshita, Yuko Ishida, Fumihiro Tajima
PURPOSE: Brain-derived neurotrophic factor (BDNF) is an important neurotrophin. The present study investigated the effects of head-out water immersion (HOI) on serum BDNF concentrations. METHODS: Eight healthy men performed 20 min head-out water immersion at 42 °C (hot-HOI) and 35 °C (neutral-HOI). These experimental trials were administered in a randomised order separated by at least 7 days. Venous blood samples were withdrawn at rest, immediately after the 20-min HOI, as well as at 15 and 30 min after the end of the HOI...
November 20, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/29156635/is-school-type-associated-with-objectively-measured-physical-activity-in-15-year-olds
#19
Lovro Štefan, Maroje Sorić, Antonela Devrnja, Hrvoje Podnar, Marjeta Mišigoj-Duraković
The main aims of this study were: (1) to determine the objectively assessed physical activity (PA) patterns in urban 15-year-old male and female adolescents according to school type and (2) to assess the differences in PA between school days and weekend days. In this cross-sectional study, participants were 187 secondary-school male and female adolescents (61.4% females) attending grammar and vocational schools. Patterns of PA were objectively evaluated using a multi-sensor body monitor for 5 consecutive days...
November 20, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29156157/continuous-gradient-temperature-raman-spectroscopy-from-100-to-40%C3%A2-c-yields-new-molecular-models-of-arachidonic-acid-and-2-arachidonoyl-1-stearoyl-sn-glycero-3-phosphocholine
#20
C Leigh Broadhurst, Walter F Schmidt, Julie K Nguyen, Jianwei Qin, Kuanglin Chao, Moon S Kim
Despite its biochemical importance, a complete Raman analysis of arachidonic acid (AA, 20:4n-6) has never been reported. Gradient temperature Raman spectroscopy (GTRS) applies the temperature gradients utilized in differential scanning calorimetry (DSC) to Raman spectroscopy, providing a straightforward technique to identify molecular rearrangements that occur near and at phase transitions. Herein we utilize the GTRS technique for AA and 1-18:0, 2-20:4n-6 phosphatidyl choline (AAPC) from cryogenic to mammalian body temperatures...
December 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
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