keyword
MENU ▼
Read by QxMD icon Read
search

Cutting edge

keyword
https://www.readbyqxmd.com/read/28532124/side-flow-effect-on-surface-generation-in-nano-cutting
#1
Feifei Xu, Fengzhou Fang, Xiaodong Zhang
The side flow of material in nano cutting is one of the most important factors that deteriorate the machined surface quality. The effects of the crystallographic orientation, feed, and the cutting tool geometry, including tool edge radius, rake angle and inclination angle, on the side flow are investigated employing molecular dynamics simulation. The results show that the stagnation region is formed in front of tool edge and it is characterized by the stagnation radius R s and stagnation height h s . The side flow is formed because the material at or under the stagnation region is extruded by the tool edge to flow to the side of the tool edge...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28531236/psychosine-enhances-the-shedding-of-membrane-microvesicles-implications-in-demyelination-in-krabbe-s-disease
#2
Ludovic D'Auria, Cory Reiter, Emma Ward, Ana Lis Moyano, Michael S Marshall, Duc Nguyen, Giuseppe Scesa, Zane Hauck, Richard van Breemen, Maria I Givogri, Ernesto R Bongarzone
In prior studies, our laboratory showed that psychosine accumulates and disrupts lipid rafts in brain membranes of Krabbe's disease. A model of lipid raft disruption helped explaining psychosine's effects on several signaling pathways important for oligodendrocyte survival and differentiation but provided more limited insight in how this sphingolipid caused demyelination. Here, we have studied how this cationic inverted coned lipid affects the fluidity, stability and structure of myelin and plasma membranes...
2017: PloS One
https://www.readbyqxmd.com/read/28529102/comparative-study-of-three-kinds-of-fibula-cutting-guides-in-reshaping-fibula-for-the-reconstruction-of-mandible-an-accuracy-simulation-study-in%C3%A2-vitro
#3
Zhiwei Dong, Bei Li, Rui Xie, Qin Wu, Li Zhang, Shizhu Bai
OBJECTIVES: In order to get predictable reassembling and higher accuracy in the reconstruction of the mandible, we designed three kinds of fibula cutting guides: (1) Two-edge wide groove guide (WGG); (2) Two-edge narrow groove guide (NGG); and (3) One-edge guide (OEG). The purpose of this study was to compare the accuracy of fibula remodelling using the three kinds of fibula cutting guides above in a simulation procedure in vitro. MATERIALS AND METHODS: Cutting and reshaping of fibula analogs were guided by the three kinds of guides mentioned above...
April 22, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28528375/hypothalamic-signaling-in-body-fluid-homeostasis-and-hypertension
#4
REVIEW
Brian J Kinsman, Haley N Nation, Sean D Stocker
PURPOSE OF REVIEW: The central nervous system plays a pivotal role in the regulation of extracellular fluid volume and consequently arterial blood pressure. Key hypothalamic regions sense and integrate neurohumoral signals to subsequently alter intake (thirst and salt appetite) and output (renal excretion via neuroendocrine and autonomic function). Here, we review recent findings that provide new insight into such mechanisms that may represent new therapeutic targets. RECENT FINDINGS: Implementation of cutting edge neuroscience approaches such as opto- and chemogenetics highlight pivotal roles of circumventricular organs to impact body fluid homeostasis...
June 2017: Current Hypertension Reports
https://www.readbyqxmd.com/read/28524873/mesoporous-metallic-rhodium-nanoparticles
#5
Bo Jiang, Cuiling Li, Ömer Dag, Hideki Abe, Toshiaki Takei, Tsubasa Imai, Md Shahriar A Hossain, Md Tofazzal Islam, Kathleen Wood, Joel Henzie, Yusuke Yamauchi
Mesoporous noble metals are an emerging class of cutting-edge nanostructured catalysts due to their abundant exposed active sites and highly accessible surfaces. Although various noble metal (e.g. Pt, Pd and Au) structures have been synthesized by hard- and soft-templating methods, mesoporous rhodium (Rh) nanoparticles have never been generated via chemical reduction, in part due to the relatively high surface energy of rhodium (Rh) metal. Here we describe a simple, scalable route to generate mesoporous Rh by chemical reduction on polymeric micelle templates [poly(ethylene oxide)-b-poly(methyl methacrylate) (PEO-b-PMMA)]...
May 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28515009/transfer-learning-on-fused-multiparametric-mr-images-for-classifying-histopathological-subtypes-of-rhabdomyosarcoma
#6
Imon Banerjee, Alexis Crawley, Mythili Bhethanabotla, Heike E Daldrup-Link, Daniel L Rubin
This paper presents a deep-learning-based CADx for the differential diagnosis of embryonal (ERMS) and alveolar (ARMS) subtypes of rhabdomysarcoma (RMS) solely by analyzing multiparametric MR images. We formulated an automated pipeline that creates a comprehensive representation of tumor by performing a fusion of diffusion-weighted MR scans (DWI) and gadolinium chelate-enhanced T1-weighted MR scans (MRI). Finally, we adapted transfer learning approach where a pre-trained deep convolutional neural network has been fine-tuned based on the fused images for performing classification of the two RMS subtypes...
May 5, 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/28514594/quantum-monte-carlo-calculations-on-a-benchmark-molecule-metal-surface-reaction-h2-cu-111
#7
Katharina Doblhoff-Dier, Joerg Meyer, Philip E Hoggan, Geert-Jan Kroes
Accurate modeling of heterogeneous catalysis requires the availability of highly accurate potential energy surfaces. Within density functional theory, these can - unfortunately - depend heavily on the exchange-correlation functional. High-level ab-initio calculations, on the other hand, are challenging due to the system size and the metallic character of the metal slab. Here, we present a quantum Monte Carlo (QMC) study of the reaction barrier for the benchmark system H2+Cu(111), focusing on the dissociative chemisorption barrier height...
May 17, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28508373/an-advanced-omic-approach-to-identify-co-regulated-clusters-and-transcription-regulation-network-with-agct-and-shoe-methods
#8
Natalia Polouliakh, Richard Nock
To obtain the global picture of genetic machinery for massive high-throughput gene expression data, novel data-driven unsupervised learning approaches are becoming essentially important. For this purpose, basic analytic workflow has been established and should include two steps: first, unsupervised clustering to identify genes with similar behavior upon exposure to a signal, and second, identification of transcription factors regulating those genes. In this chapter, we will describe an advanced tool that can be used for analyzing and characterizing large-scale time-series gene expression composed of a two-step approach...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28507723/p-doping-of-graphene-in-hybrid-materials-with-3-10-diazapicenium-dications
#9
Alexandra Roth, Tobias A Schaub, Ute Meinhardt, Dominik Thiel, Jan Storch, Vladimír Církva, Pavel Jakubík, Dirk M Guldi, Milan Kivala
N,N'-Didodecyl-substituted 3,10-diazapicenium salts featuring bromide and hexafluorophosphate counterions have been designed as novel dopants to realize individualized graphene sheets in a series of cutting edge experiments and to intrinsically stabilize them via p-doping. Importantly, electrochemical studies revealed two consecutive irreversible one-electron reductions of the N,N'-didodecyl-substituted 3,10-diazapicenium salts to yield the corresponding radical cation and neutral quinoidal species. Formation of both species was accompanied by characteristic changes in the absorption spectra...
May 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/28507025/cutting-edge-defective-aerobic-glycolysis-defines-the-distinct-effector-function-in-antigen-activated-cd8-recent-thymic-emigrants
#10
Cody A Cunningham, Tessa Bergsbaken, Pamela J Fink
Recent thymic emigrants (RTEs) are the youngest peripheral T cells that have completed thymic selection and egress to the lymphoid periphery. RTEs are functionally distinct from their more mature but still naive T cell counterparts, because they exhibit dampened proliferation and reduced cytokine production upon activation. In this article, we show that, compared with more mature but still naive T cells, RTEs are impaired in their ability to perform aerobic glycolysis following activation. Impaired metabolism underlies the reduced IFN-γ production observed in activated RTEs...
May 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28507024/cutting-edge-differential-fine-tuning-of-il-2-and-il-15-dependent-functions-by-targeting-their-common-il-2-15r%C3%AE-%C3%AE-c-receptor
#11
Dihia Meghnem, Sébastien Morisseau, Marie Frutoso, Kilian Trillet, Mike Maillasson, Isabelle Barbieux, Sarah Khaddage, Isabelle Leray, Markus Hildinger, Agnès Quéméner, Yannick Jacques, Erwan Mortier
Interleukin 2 and IL-15 are two closely related cytokines, displaying important functions in the immune system. They share the heterodimeric CD122/CD132 receptor to deliver their signals within target cells. Their specificity of action is conferred by their α receptor chains, IL-2Rα and IL-15Rα. By combining an increased affinity for CD122 and an impaired recruitment of CD132, we have generated an original molecule named IL-2Rβ/γ (CD122/CD132) inhibitor (BiG), targeting the CD122/CD132 receptor. BiG efficiently inhibited IL-15- and IL-2-dependent functions of primary cells, including CD8 T and NK cells, in vitro and in vivo...
May 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28503951/gold-nanoparticles-applications-from-artificial-enzyme-till-drug-delivery
#12
Kazem Golchin, Jafar Golchin, Shahrooz Ghaderi, Neda Alidadiani, Sajjad Eslamkhah, Masoud Eslamkhah, Soodabeh Davaran, Abolfazl Akbarzadeh
Today, nano-medicine promotes new therapeutics and diagnostics tools, including sensing of biomolecules as a biosensor, cancer chemotherapy and drug or gene delivery. Because of small size and biocompatibility of gold nanoparticles (GNPs), they become a good candidate for biological application. Also, thanks to their biological and chemical properties, they can mimic function of some enzymes including super oxide dismutase (SOD), esterase, etc. Also, biomaterials and bioengineering have grown so fast since the last decade for many therapeutic applications such as tissue regeneration...
May 14, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28503906/more-than-words-the-role-of-multiword-sequences-in-language-learning-and-use
#13
Morten H Christiansen, Inbal Arnon
The ability to convey our thoughts using an infinite number of linguistic expressions is one of the hallmarks of human language. Understanding the nature of the psychological mechanisms and representations that give rise to this unique productivity is a fundamental goal for the cognitive sciences. A long-standing hypothesis is that single words and rules form the basic building blocks of linguistic productivity, with multiword sequences being treated as units only in peripheral cases such as idioms. The new millennium, however, has seen a shift toward construing multiword linguistic units not as linguistic rarities, but as important building blocks for language acquisition and processing...
May 14, 2017: Topics in Cognitive Science
https://www.readbyqxmd.com/read/28502674/evidence-based-drug-treatment-for-special-patient-populations-through-model-based-approaches
#14
REVIEW
Elke H J Krekels, J G Coen van Hasselt, John N van den Anker, Karel Allegaert, Dick Tibboel, Catherijne A J Knibbe
The majority of marketed drugs remain understudied in some patient populations such as pregnant women, paediatrics, the obese, the critically-ill, and the elderly. As a consequence, currently used dosing regimens may not assure optimal efficacy or minimal toxicity in these patients. Given the vulnerability of some subpopulations and the challenges and costs of performing clinical studies in these populations, cutting-edge approaches are needed to effectively develop evidence-based and individualized drug dosing regimens...
May 11, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28502569/an-in%C3%A2-vitro-comparison-study-of-the-use-of-a-drill-or-a-saw-in-the-hunsuck-dal-pont-modification-of-the-obwegeser-sagittal-split-osteotomy-in-pig-mandibles
#15
Roland Böckmann, Klaus Neuking, Peter Kessler
PURPOSE: Fracture lines in unfavorable locations are referred to as "bad splits" in a mandibular sagittal split osteotomy (SSO). Several modifications of the technique by Obwegeser have been introduced to minimize this risk. This in vitro study was performed to determine whether the shape of the osteotomy cut affects the torque and the fracture pattern of an SSO in pig mandibles. MATERIALS AND METHODS: In a split-mouth model, 16 mandibles were split according to the Hunsuck-Dal Pont modification of the Obwegeser technique...
April 17, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28497741/-cancer-screening-fantasies
#16
Bertrand Jordan
The use of circulating tumour DNA to screen for cancer in asymptomatic individuals is the goal of Grail, initially set up by Illumina. This company is now raising a large amount of capital to develop this project on a much longer time scale than initially announced. Although it has access to cutting edge technology and is led by excellent scientists, the prospect for success in this application is rather bleak, mainly because of the extreme requirements for specificity in order to avoid overdiagnosis.
April 2017: Médecine Sciences: M/S
https://www.readbyqxmd.com/read/28494568/-the-research-advances-and-applications-of-genome-editing-in-hereditary-eye-diseases
#17
S W Cai, Y Zhang, M Z Hou, Y Liu, X R Li
Genome editing is a cutting-edge technology that generates DNA double strand breaks at the specific genomic DNA sequence through nuclease recognition and cleavage, and then achieves insertion, replacement, or deletion of the target gene via endogenous DNA repair mechanisms, such as non-homologous end joining, homology directed repair, and homologous recombination. So far, more than 600 human hereditary eye diseases and systemic hereditary diseases with ocular phenotypes have been found. However, most of these diseases are of incompletely elucidated pathogenesis and without effective therapies...
May 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28491241/fifteen-years-of-bone-marrow-mononuclear-cell-therapy-in-acute-myocardial-infarction
#18
REVIEW
Miruna Mihaela Micheu, Maria Dorobantu
In spite of modern treatment, acute myocardial infarction (AMI) still carries significant morbidity and mortality worldwide. Even though standard of care therapy improves symptoms and also long-term prognosis of patients with AMI, it does not solve the critical issue, specifically the permanent damage of cardiomyocytes. As a result, a complex process occurs, namely cardiac remodeling, which leads to alterations in cardiac size, shape and function. This is what has driven the quest for unconventional therapeutic strategies aiming to regenerate the injured cardiac and vascular tissue...
April 26, 2017: World Journal of Stem Cells
https://www.readbyqxmd.com/read/28489084/observation-of-crystalline-changes-of-titanium-dioxide-during-lithium-insertion-by-visible-spectrum-analysis
#19
Inho Nam, Jongseok Park, Soomin Park, Seongjun Bae, Young Geun Yoo, Jeong Woo Han, Jongheop Yi
Real-time analysis of changes in the atomic environment of materials is a cutting edge technology that is being used to explain reaction dynamics in many fields of science. Previously, this kind of analysis was only possible using heavy nucleonic equipment such as XANES and EXAFS, or Raman spectroscopy on a moderate scale. Here, a new methodology is described that can be used to track changes in crystalline developments during complex Li insertion reactions via the observation of structural color. To be specific, the changes in atomic crystalline and nanostructure are shown during Li insertion in a complex TiO2 polymorph...
May 10, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28487442/crispr-cas9-at-the-cutting-edge-of-hepatology
#20
REVIEW
Francis P Pankowicz, Kelsey E Jarrett, William R Lagor, Karl-Dimiter Bissig
Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)/Cas9 genome engineering has revolutionised biomedical science and we are standing on the cusp of medical transformation. The therapeutic potential of this technology is tremendous, however, its translation to the clinic will be challenging. In this article, we review recent progress using this genome editing technology and explore its potential uses in studying and treating diseases of the liver. We discuss the development of new research tools and animal models as well as potential clinical applications, strategies and challenges...
May 9, 2017: Gut
keyword
keyword
1308
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"