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https://www.readbyqxmd.com/read/29341754/plasma-versus-drude-modeling-of-the-casimir-force-beyond-the-proximity-force-approximation
#1
Michael Hartmann, Gert-Ludwig Ingold, Paulo A Maia Neto
We calculate the Casimir force and its gradient between a spherical and a planar gold surface. Significant numerical improvements allow us to extend the range of accessible parameters into the experimental regime. We compare our numerically exact results with those obtained within the proximity force approximation (PFA) employed in the analysis of all Casimir force experiments reported in the literature so far. Special attention is paid to the difference between the Drude model and the dissipationless plasma model at zero frequency...
July 28, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29333142/ifcc-task-force-on-chronic-kidney-disease-integrated-project-tf-ckd-special-issue
#2
EDITORIAL
(no author information available yet)
No abstract text is available yet for this article.
December 2017: EJIFCC
https://www.readbyqxmd.com/read/29330957/behavioral-correlates-of-cranial-muscle-functional-morphology
#3
Adam Hartstone-Rose, Sharlene E Santana
This issue of the Anatomical Record is the first of a two-volume set that focuses on new investigations into behavioral correlates of muscle functional morphology. Much of the research on functional morphology and adaptation to specific functional niches focuses on the shapes of hard-tissues-bones and teeth. Investigations into soft-tissue anatomy tend to be predominantly descriptive with only brief allusion to ontogenetic or evolutionary origins of structures. When muscles are included in analyses of functional systems, their function tends to be oversimplified-usually considered a simple force vector connecting two osteological points, with the force treated as a constant derived from some simple calculation of muscle size...
February 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29330952/jaw-muscle-fiber-architecture-and-leverage-in-the-hard-object-feeding-sooty-mangabey-are-not-structured-to-facilitate-relatively-large-bite-forces-compared-to-other-papionins
#4
Andrea B Taylor, Claire E Terhune, Maxx Toler, Megan Holmes, Callum F Ross, Christopher J Vinyard
Numerous studies have sought to link craniofacial morphology with behavioral ecology in primates. Extant hard-object feeders have been of particular interest because of their potential to inform our understanding about the diets of early fossil hominins. Sooty mangabeys (Cercocebus atys) are hard-object feeders that frequently generate what have been described as audibly powerful bites at wide jaw gapes to process materially stiff and hard seeds. We address the hypothesis that sooty mangabeys have features of the masticatory apparatus that facilitate this feeding behavior by comparing fiber architecture and leverage of the masseter and temporalis muscles between sooty mangabeys and three papionin primates that do not specialize on hard objects...
February 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29330950/comparative-anatomy-of-bat-jaw-musculature-via-diffusible-iodine-based-contrast-enhanced-computed-tomography
#5
Sharlene E Santana
Noctilionoid bats exhibit an extraordinary array of cranial specializations that match diverse diets, including variation in jaw musculature physiological cross-sectional areas (PCSA), lever arms, and relative contribution to bite force. Although previous research in this group has linked variation in skull shape and muscle mechanics to biting performance, there are still important gaps about the anatomical underpinnings of noctilionoid dietary adaptations, including the degree of compartmentalization of the jaw musculature, and whether and how muscle attachment sites have evolved across noctilionoid species that specialize on derived diets...
February 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29329225/optical-fiber-demodulation-system-with-high-performance-for-assessing-fretting-damage-of-steam-generator-tubes
#6
Peijian Huang, Ning Wang, Junying Li, Yong Zhu, Jie Zhang, Zhide Xi
In order to access the fretting damage of the steam generator tube (SGT), a fast fiber Fabry-Perot (F-P) non-scanning correlation demodulation system based on a super luminescent light emitting diode (SLED) was performed. By demodulating the light signal coming out from the F-P force sensor, the radial collision force between the SGT and the tube support plate (TSP) was interrogated. For higher demodulation accuracy, the effects of the center wavelength, bandwidth, and spectrum noise of SLED were discussed in detail...
January 12, 2018: Sensors
https://www.readbyqxmd.com/read/29328625/double-channel-piezotronic-transistors-for-highly-sensitive-pressure-sensing
#7
Shuhai Liu, Longfei Wang, Zheng Wang, Yafeng Cai, Xiaolong Feng, Yong Qin, Zhong Lin Wang
Piezotronic transistor (PT) that utilize inner crystal potential generated by interface piezoelectric polarization charges as the gate voltage has great potential applications in force/pressure triggered or controlled electronics device, sensors, human-machine communication and microelectromechanical systems. Although the performance of PTs has been partly enhanced by exploring special materials with different geometry or high piezoelectricity, few studies have been focused on the structure design of PT itself to more effectively enhance the performance and structural reliability...
January 12, 2018: ACS Nano
https://www.readbyqxmd.com/read/29326489/ondansetron-ameliorates-depression-associated-with-obesity-in-high-fat-diet-fed-experimental-mice-an-investigation-based-on-the-behavioral-biochemical-and-molecular-approach
#8
Yeshwant Kurhe, Radhakrishnan Mahesh
INTRODUCTION: Obesity is an important risk factor for depression as more than half of the obese population is susceptible for depression at double rate. Our earlier studies reported the antidepressant potential of 5-HT3 receptor antagonist, ondansetron (OND) in depression associated obesity using behavioral tasks. The present research work is aimed to evaluate the effect of OND on depression associated with obesity with special emphasis on biochemical and molecular mechanisms such as hippocampal brain-derived neurotrophic factor (BDNF), cyclic adenosine monophosphate (cAMP), 5-hydroxytryptamine (5-HT), hippocampal histological examination and immunohistochemical expression of p53 proteins...
July 2017: Indian Journal of Pharmacology
https://www.readbyqxmd.com/read/29324822/biting-mechanics-and-niche-separation-in-a-specialized-clade-of-primate-seed-predators
#9
Justin A Ledogar, Theodora H Y Luk, Jonathan M G Perry, Dimitri Neaux, Stephen Wroe
We analyzed feeding biomechanics in pitheciine monkeys (Pithecia, Chiropotes, Cacajao), a clade that specializes on hard-husked unripe fruit (sclerocarpy) and resistant seeds (seed predation). We tested the hypothesis that pitheciine crania are well-suited to generate and withstand forceful canine and molar biting, with the prediction that they generate bite forces more efficiently and better resist masticatory strains than the closely-related Callicebus, which does not specialize on unripe fruits and/or seeds...
2018: PloS One
https://www.readbyqxmd.com/read/29322655/efficiency-of-er-yag-laser-in-debonding-of-porcelain-laminate-veneers-by-contact-and-non-contact-laser-application-modes-in-vitro-study
#10
Mohand ALBalkhi, Eyad Swed, Omar Hamadah
OBJECTIVE: To determine the efficiency of debonding porcelain laminate veneers (PLV) by using several laser parameters and two different application modes of Er:YAG laser [contact (CM) and non-contact (NCM)], by verification of the consumed PLV debonding time and the changes in dental pulp temperature. MATERIALS AND METHODS: Forty extracted non-carious human maxillary premolars were prepared for receiving PLV. Sixteen of them were divided into two groups, each of them comprised eight samples based on the application mode; group A with NCM, and group B with CM...
January 11, 2018: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/29322075/data-about-knowledge-and-tendency-towards-organic-foods-use-in-tehran
#11
Fariba Razeghi, Ehsan Haghi, Masoud Yunesian
Improper use of chemical fertilizer and pesticide poses not only threats to the environmental safety but also major public health issues globally. The adverse effects of chemical fertilizers and pesticides forced agricultural scientist to look for safer methods such as organic farming. This study was aimed at assessing the knowledge and tendency towards organic foods use among people of living in a megacity, Tehran. Data was collected from "fall exhibition" and "health food exhibition" participants using pretested questionnaire...
February 2018: Data in Brief
https://www.readbyqxmd.com/read/29312725/contributing-factors-to-the-outcome-of-primary-malignant-chest-wall-tumors
#12
Abdel Rahman Mohamed Abdel Rahman, Mohamed Rahouma, Rabab Gaafar, Sherif Bahaa, Iman Loay, Mohamed Kamel, Hoda Abdelbaki, Maha Yahia
Background: Primary malignant chest-wall tumors (PMCWTs) are a heterogeneous group of tumors. They require a special experience in designing resection and reconstruction. They account for less than 1% of all primary malignant tumors. This study is designed to clarify different factors contributing to the outcome of patients with PMCWTs in our institution. Methods: A retrospective study included 98 patients with pathology proven PMCWTs, treated at the National Cancer Institute (NCI), Cairo University, Egypt, during the past 10 years...
December 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29306925/calcium-sensitization-mechanisms-in-detrusor-smooth-muscles
#13
REVIEW
Irfan Anjum
The contraction of detrusor smooth muscles depends on the increase in intracellular calcium. The influx of calcium from the plasma membrane calcium channels and calcium release from the sarcoplasmic reticulum give rise to intracellular calcium. Under the pathophysiological conditions, the increased sensitivity of regulatory and contractile proteins to calcium also plays an important role in maintaining the spontaneous detrusor smooth muscle activity. Many proteins have been identified to play a role in calcium sensitization...
January 8, 2018: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/29305762/the-dance-of-attention-toward-an-aesthetic-dimension-of-attention-deficit
#14
Kasper Levin
What role does the aesthetics of bodily movement play in the understanding of attention among children diagnosed with attention-deficit/hyperactivity disorder (ADHD)? This article animates a phenomenological approach to attention and embodiment with a special focus on the relation between aesthetic or expressive bodily movement and behavioral awareness in children diagnosed with ADHD. However, beyond this it is argued that the aesthetic aspect of movement calls for an expansion of the phenomenological perspective...
January 5, 2018: Integrative Psychological & Behavioral Science
https://www.readbyqxmd.com/read/29303257/unbiased-molecular-dynamics-of-11-min-timescale-drug-unbinding-reveals-transition-state-stabilizing-interactions
#15
Samuel D Lotz, Alex Dickson
Ligand (un)binding kinetics is being recognized as a determinant of drug specificity and efficacy in an increasing number of systems. However, the calculation of kinetics and the simulation of drug unbinding is more difficult than computing thermodynamic quantities, such as binding free energies. Here we present the first full simulations of an unbinding process at pharmacologically relevant time scales (11 min), without the use of biasing forces, detailed prior knowledge, or specialized processors using the weighted ensemble based algorithm, WExplore...
January 5, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29300822/spatio-temporal-arrangement-of-chamaerops-humilis-inflorescences-and-occupancy-patterns-by-its-nursery-pollinator-derelomus-chamaeropsis
#16
M E Jácome-Flores, Miguel Delibes, Thorsten Wiegand, José M Fedriani
Background and Aims: Nursery pollination is a highly specialized interaction in which pollinators breed inside plant reproductive structures. Pollinator occupancy of host plants often depends on plant location, flowering synchrony and sex. The nursery pollination system between the dioecious dwarf palm Chamaerops humilis (Arecaceae) and the host-specific palm flower weevil Derelomus chamaeropsis was investigated. For the first time, sex, flowering synchrony and spatial distribution of plants was related to the occupancy probability and the abundance of D...
January 2, 2018: Annals of Botany
https://www.readbyqxmd.com/read/29298377/cupric-phosphate-nanosheets-wrapped-inorganic-membranes-with-superhydrophilic-and-outstanding-anti-crude-oil-fouling-property-for-oil-water-separation
#17
Shenxiang Zhang, Gaoshuo Jiang, Shoujian Gao, Huile Jin, Yuzhang Zhu, Feng Zhang, Jian Jin
Developing an effective and sustainable solution for cleaning up or separating oily water is highly desired. In this work, we report a completely new inorganic mesh membrane made up of cupric phosphate (Cu3(PO4)2) in a special nanosheets-constructed honeycomb-like structure. Combing the unique hierarchical structure with strong hydration ability of Cu3(PO4)2, the nanosheets-wrapped membrane exhibits a superior superhydrophilic and underwater anti-oil fouling and anti-bio fouling property for efficient oil/water separation to various viscous oils such as heavy diesel oil, light crude oil, and even heavy crude oil with underwater oil contact angles (CAs) all above 158° and nearly zero underwater oil adhesive force even when a large preload force up to 400 μN applied on the oil droplet...
January 3, 2018: ACS Nano
https://www.readbyqxmd.com/read/29295574/nematic-liquid-crystal-colloids
#18
REVIEW
Igor Muševič
This article provides a concise review of a new state of colloidal matter called nematic liquid-crystal colloids. These colloids are obtained by dispersing microparticles of different shapes in a nematic liquid crystal that acts as a solvent for the dispersed particles. The microparticles induce a local deformation of the liquid crystal, which then generates topological defects and long-range forces between the neighboring particles. The colloidal forces in nematic colloids are much stronger than the forces in ordinary colloids in isotropic solvents, exceeding thousands of kBT per micrometer-sized particle...
December 25, 2017: Materials
https://www.readbyqxmd.com/read/29289212/experimental-confirmation-of-the-atomic-force-microscope-cantilever-stiffness-tilt-correction
#19
Richard S Gates
The tilt angle (angle of repose) of an AFM cantilever relative to the surface it is interrogating affects the effective stiffness of the cantilever as it analyzes the surface. For typical AFMs and cantilevers that incline from 10° to 15° tilt, this is thought to be a 3%-7% stiffness increase correction. While the theoretical geometric analysis of this effect may have reached a consensus that it varies with cos-2 θ, there is very little experimental evidence to confirm this using AFM cantilevers. Recently, the laser Doppler vibrometry thermal calibration method utilized at NIST has demonstrated sufficient stiffness calibration accuracy, and precision to allow a definitive experimental confirmation of the particular trigonometric form of this tilt effect using a commercial microfabricated AFM cantilever specially modified to allow strongly tilted (up to 15°) effective cantilever stiffness measurements...
December 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/29284912/lower-jaw-grip-strength-in-healthy-and-sick-population-measured-by-special-force-transducer
#20
Dino Dizdarevic, Tarik Masic, Edi Muslic
Introduction: One of the basic chronic diseases of the MFH domain that is treated on an outpatient basis is temporomandibular dysfunction (TMD). It represents a number of pathological conditions that lead to the dysfunction of the normal function of the stomatognatic system. Observing the etiologic factors of this condition, temporomandibular TM trauma, poor habits such as infantile type of swallowing, tongue depression, and tectogenic disturbance of the myofunctional squamous system are reported in order to reconstruct the defects of neighboring regions...
December 2017: Acta Informatica Medica: AIM
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