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https://www.readbyqxmd.com/read/29442846/thermo-electric-properties-of-cu-and-ni-nanoparticles-packed-beds
#1
Zi-Zhen Lin, Cong-Liang Huang, Zun Huang
The hot-wire method and the four-probe resistivity method are applied to probe the thermal conductivity (k) and the electric conductivity (σ) of Cu and Ni nanoparticle packed beds (NPBs). A fitting method based on classical physical theory is devised to separate ke (electronic thermal conductivity) and kp (phonon thermal conductivity) from k at room temperature. Results turn out that kp only accounts for a small proportion of k (4-20%); the proportion decreases with increasing porosity or temperature. Most importantly, this fitting method provides a simple way to separate ke and kp from k at room temperature...
May 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29429386/r516q-mutation-in-melanoma-differentiation-associated-protein-5-mda5-and-its-pathogenic-role-towards-rare-singleton-merton-syndrome-a-signature-associated-molecular-dynamics-study
#2
P Raghuraman, C Sudandiradoss
Singleton Merton syndrome, a critical and rare multifactorial disorder that is closely linked to R516Q mutation in MDA5 protein associated with an enhanced interferon response in the affected individual. In the present study, we provide conclusive key evidence on R516Q mutation and their connectivity towards sequence-structural basis dysfunction of MDA5 protein. Among the various mutations, we found R516Q is the most pathogenic mutation based on mutational signature Q-A-[RE]-G-R-[GA]-R-A-[ED]-[DE]-S-[ST]-Y-[TSAV]-L-V designed from our work...
February 11, 2018: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/29405818/comparison-of-muscle-temperature-increases-produced-by-moist-hot-pack-and-thermostim-probe
#3
Jennifer Ostrowski
BACKGROUND: ThermoStim Probe (TSP) has recently joined the market as a superficial heating modality. While there is limited research into the intramuscular heating capability of superficial heating modalities in general (moist hot pack, paraffin, warm whirlpool), no previous research has examined intramuscular heating capability of TSP. OBJECTIVE: Evaluate rate and magnitude of intramuscular heating via TSP as compared to hydrocollator moist hot pack (MHP); determine if TSP can increase tissue temperature 3-4°C (vigorous heating range)...
February 6, 2018: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29402130/behavioral-and-hematological-responses-of-broiler-chickens-administered-with-betaine-and-ascorbic-acid-during-hot-dry-season
#4
Ifeanyichukwu C Egbuniwe, Joseph O Ayo, Mohammed U Kawu, Aliyu Mohammed
Heat stress is a major problem in poultry production in tropical regions. Assessing the impact of thermally stressful environmental conditions on the welfare of broiler chickens is of great importance. Behavioral responses in a novel environment and hematology of broiler chickens administered with betaine and/or ascorbic acid (AA) during the hot-dry season were evaluated. Broiler chickens were randomly divided into four groups: Group I (control) was given sterile water, Group II was given betaine, Group III was given AA, and Group IV received betaine + AA orally and daily for 42 days...
February 5, 2018: Journal of Applied Animal Welfare Science: JAAWS
https://www.readbyqxmd.com/read/29346971/drag-force-in-a-cold-or-hot-granular-medium
#5
A Seguin, P Gondret
We measure experimentally and analyze the resisting force exerted by a bidimensional packing of small disks on a larger intruder disk dragged horizontally at constant velocity V_{0}. Depending on the vibration level of the packing that leads to a granular "cold" or "hot" packing, two force regimes are observed. At low vibration level ("cold" granular medium), the drag force F does not depend on V_{0}, whereas for high vibrations ("hot" granular medium), the drag force increases linearly with V_{0}. Both regimes can be understood by the balance of two "granular temperatures" that can be defined in the system: a bulk temperature T_{b} imposed by the external vibration to the overall packing and a local temperature T_{0} induced by the own motion of the intruder disk in its vicinity...
September 2017: Physical Review. E
https://www.readbyqxmd.com/read/29346720/nanoscale-control-of-molecular-self-assembly-induced-by-plasmonic-hot-electron-dynamics
#6
Sabrina Simoncelli, Yi Li, Emiliano Cortes, Stefan A Maier
Self-assembly processes allow designing and creating complex nanostructures using molecules as building blocks and surfaces as scaffolds. This autonomous driven construction is possible due to a complex thermodynamic balance of molecule-surface interactions. As such, nanoscale guidance and control over this process is hard to achieve. Here we use the highly localized light-to-chemical-energy conversion of plasmonic materials to spatially cleave Au-S bonds on pre-determined locations within a single nanoparticle, enabling a high degree of control over this archetypal system for molecular self-assembly...
January 18, 2018: ACS Nano
https://www.readbyqxmd.com/read/29319237/regional-differences-in-purkinje-cell-morphology-in-the-cerebellar-vermis-of-male-mice
#7
Hermina Nedelescu, Mohamed Abdelhack, Arwel T Pritchard
Regional differences in dendritic architecture can influence connectivity and dendritic signal integration, with possible consequences for neuronal computation. In the cerebellum, analyses of Purkinje cells (PCs), which are functionally critical as they provide the sole output of the cerebellar cortex, have suggested that the cerebellar cortex is not uniform in structure as traditionally assumed. However, the limitations of traditional staining methods and microscopy capabilities have presented difficulties in investigating possible local variations in PC morphology...
January 10, 2018: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/29241713/effects-of-superficial-heating-and-insulation-on-walking-speed-in-people-with-hereditary-and-spontaneous-spastic-paraparesis-a-randomised-crossover-study
#8
Amanda L Denton, Alan D Hough, Jennifer A Freeman, Jonathan F Marsden
OBJECTIVES: Cooling of the lower limb in people with Hereditary and Spontaneous Spastic Paraparesis (pwHSSP) has been shown to affect walking speed and neuromuscular impairments. The investigation of practical strategies, which may help to alleviate these problems is important. The potential of superficial heat to improve walking speed has not been explored in pwHSSP. Primary objective was to explore whether the application of superficial heat (hot packs) to lower limbs in pwHSSP improves walking speed...
December 11, 2017: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/29184307/does-transcutaneous-electrical-nerve-stimulation-tens-simultaneously-combined-with-local-heat-and-cold-applications-enhance-pain-relief-compared-with-tens-alone-in-patients-with-knee-osteoarthritis
#9
Takaya Maeda, Hideki Yoshida, Tomoyuki Sasaki, Atsushi Oda
[Purpose] The purpose of this study was to investigate whether transcutaneous electrical nerve stimulation simultaneously combined with local heat and cold applications enhances pain relief compared with transcutaneous electrical nerve stimulation alone in patients with knee osteoarthritis. [Subjects and Methods] Fourty-five patients with knee osteoarthritis participated in this study. They were randomly assigned to the following three interventions: transcutaneous electrical nerve stimulation simultaneously combined with local heat using a hot pack; combined with local cold using a cold pack; and transcutaneous electrical nerve stimulation alone...
October 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29160551/effects-of-pilates-and-yoga-in-patients-with-chronic-neck-pain-a-sonographic-study
#10
Naime Uluğ, Öznur Tunca Yılmaz, Murat Kara, Levent Özçakar
BACKGROUND: Various studies have shown the efficacy of conventional isometric, Pilates and yoga exercises. However, data on the effects and comparison of these specific exercises on the cervical muscle morphology are insufficient or lacking. OBJECTIVE: To investigate the effects of different exercise treatments on neck muscles in patients with chronic neck pain. DESIGN: A randomized study. METHODS: Fifty-six patients with chronic neck pain were randomized into 3 groups as follows: Pilates group (n = 20), yoga group (n = 18) and isometric group (n = 18)...
November 16, 2017: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/29137745/intensification-of-heat-transfer-during-mild-thermal-treatment-of-dry-cured-ham-by-using-airborne-ultrasound
#11
M Contreras, J Benedito, J Bon, J V Garcia-Perez
The application of power ultrasound (PuS) could be used as a novel technology with which to intensify thermal treatments using hot air. Mild thermal treatments have been applied to improve the soft texture of dry-cured ham caused by defective processing. In this regard, the aim of this study was to assess the kinetic intensification linked to the application of airborne PuS in the mild thermal treatment using hot air of dry-cured ham. For this purpose, vacuum packed cylindrical samples (2.52±0.11cm in diameter and 1...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29124059/evaluation-of-three-hydration-strategies-in-detection-dogs-working-in-a-hot-environment
#12
Cynthia M Otto, Elizabeth Hare, Jess L Nord, Shannon M Palermo, Kathleen M Kelsey, Tracy A Darling, Kasey Schmidt, Destiny Coleman
Physical activity in hot environments can increase the risk of heat stress or heat stroke in dogs. Heat tolerance is influenced by acclimatization to the environment, physical fitness, and hydration state. Three common strategies to promote hydration in working dogs are free access to water (W), oral electrolyte solutions (OESs), and administration of subcutaneous fluids (SQs). None of these methods have been compared for safety or efficacy in a working environment. In a cross-over design, seven vehicle-screening canines were randomly assigned to each of the three hydration strategies during working shifts at the Sarita, TX checkpoint...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/29122255/the-medium-term-effects-of-diadynamic-currents-in-chronic-low-back-pain-tens-versus-diadynamic-currents-a-randomised-follow-up-study
#13
Selcuk Sayilir, Mustafa Turgut Yildizgoren
OBJECTIVE: The aims of the study were to evaluate the medium-term effects of diadynamic (DD) currents on relieving symptoms/improving physical functionality in patients with chronic low back pain (LBP) and to compare the efficacy of DD versus TENS. METHODS: The patients were divided into two groups as the TENS group (n = 26) and the DD group (n = 29). Additional treatment of hot pack + therapeutic ultrasound was applied to all patients. The therapy programs were administered as a total of 10 sessions over a period of 2 weeks...
November 2017: Complementary Therapies in Clinical Practice
https://www.readbyqxmd.com/read/29114516/comparative-effectiveness-of-lumbar-stabilization-dynamic-strengthening-and-pilates-on-chronic-low-back-pain-randomized-clinical-trial
#14
Esha A Bhadauria, Peeyoosha Gurudut
The aim of the present study was to compare three different forms of exercises namely lumbar stabilization, dynamic strengthening, and Pilates on chronic low back pain (LBP) in terms of pain, range of motion, core strength and function. In this study, 44 subjects suffering from non-specific LBP for more than 3 months were randomly allocated into the lumbar stabilization group, the dynamic strengthening group, and the Pilates group. Ten sessions of exercises for 3 weeks were prescribed along with interferential current and hot moist pack...
August 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29079386/tailoring-the-self-assembly-of-linear-alkyl-chains-for-the-design-of-advanced-materials-with-technological-applications
#15
REVIEW
Cristina E Hoppe, Roberto J J Williams
The self-assembly of n-alkyl chains at the bulk or at the interface of different types of materials and substrates has been extensively studied in the past. The packing of alkyl chains is driven by Van der Waals interactions and can generate crystalline or disordered domains, at the bulk of the material, or self-assembled monolayers at an interface. This natural property of alkyl chains has been employed in recent years to develop a new generation of materials for technological applications. These studies are dispersed in a variety of journals...
October 13, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29053473/enhancing-raman-signals-through-electromagnetic-hot-zones-induced-by-magnetic-dipole-resonance-of-metal-free-nanoparticles
#16
Yi-Chuan Tseng, Yang-Chun Lee, Sih-Wei Chang, Tzu-Yao Lin, Dai-Liang Ma, Bo-Cheng Lin, Hsuen-Li Chen
In this study, we found that the large area of electromagnetic field hot zone induced through magnetic dipole resonance of metal-free structures can greatly enhance Raman scattering signals. The magnetic resonant nanocavities, based on high-refractive-index silicon nanoparticles (SiNPs), were designed to resonate at the wavelength of the excitation laser of the Raman system. The well-dispersed SiNPs that were not closely packed displayed significant magnetic dipole resonance and gave a Raman enhancement per unit volume of 59 347...
October 20, 2017: Nanotechnology
https://www.readbyqxmd.com/read/29052190/mapping-of-histone-modifications-in-plants-by-tandem-mass-spectrometry
#17
Walid Mahrez, Lars Hennig
To get an insight into the mechanisms of gene expression regulation in eukaryotic organisms, it is necessary to decipher the connection between the different chemical modifications occurring on the chromatin, at both the DNA and the associated histone proteins. Histones are basic proteins, which pack the DNA into nucleosomes, and are hot spots for several posttranslational modifications. Elucidating combinatorial histone modifications co-occurring on the same histone protein will greatly contribute to our understanding of the mechanisms involved in the development of eukaryotes...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29037409/thermotolerance-health-profile-and-cellular-expression-of-hsp90ab1-in-nguni-and-boran-cows-raised-on-natural-pastures-under-tropical-conditions
#18
C L F Katiyatiya, G Bradley, V Muchenje
Boran (n=15) and Nguni (n=15) cows were used in a study to determine the effect of breed, age and coat colour on the concentration of heat shock protein 90 (HSP90AB1), physiological rectal and skin temperature, and markers of health. The cows were exposed to summer heat stress and Boran cows had higher significant (P<0.05) skin temperature (35.1±0.42°C) as compared to the Nguni cows (36.0±0.38°C). Nguni cows had higher body thermal gradients than the Boran cows. Boran cows had thicker skin (P<0.05) and longer hairs (24...
October 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/29027134/topical-thermal-therapy-with-hot-packs-suppresses-physical-inactivity-induced-mechanical-hyperalgesia-and-up-regulation-of-ngf
#19
Tatsuki Nakagawa, Shin-Ichiro Hiraga, Kazue Mizumura, Kiyomi Hori, Noriyuki Ozaki, Tomoko Koeda
We focused on the analgesic effect of hot packs for mechanical hyperalgesia in physically inactive rats. Male Wistar rats were randomly divided into four groups: control, physical inactivity (PI), PI + sham treatment (PI + sham), and PI + hot pack treatment (PI + hot pack) groups. Physical inactivity rats wore casts on both hind limbs in full plantar flexed position for 4 weeks. Hot pack treatment was performed for 20 min a day, 5 days a week. Although mechanical hyperalgesia and the up-regulation of NGF in the plantar skin and gastrocnemius muscle were observed in the PI and the PI + sham groups, these changes were significantly suppressed in the PI + hot pack group...
October 12, 2017: Journal of Physiological Sciences: JPS
https://www.readbyqxmd.com/read/29026173/three-dimensional-sers-substrates-formed-with-plasmonic-core-satellite-nanostructures
#20
Li-An Wu, Wei-En Li, Ding-Zheng Lin, Yih-Fan Chen
We demonstrate three-dimensional surface-enhanced Raman spectroscopy (SERS) substrates formed by accumulating plasmonic nanostructures that are synthesized using a DNA-assisted assembly method. We densely immobilize Au nanoparticles (AuNPs) on polymer beads to form core-satellite nanostructures for detecting molecules by SERS. The experimental parameters affecting the AuNP immobilization, including salt concentration and the number ratio of the AuNPs to the polymer beads, are tested to achieve a high density of the immobilized AuNPs...
October 12, 2017: Scientific Reports
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