keyword
MENU ▼
Read by QxMD icon Read
search

chip

keyword
https://www.readbyqxmd.com/read/28222581/a-comparison-of-the-physiological-demands-imposed-by-competing-in-a-half-marathon-vs-a-marathon
#1
Juan Del Coso, Juan J Salinero, Beatriz Lara, Javier Abián-Vicén, César Gallo-Salazar, Francisco Areces
BACKGROUND: While there is widespread scientific information about the physiological challenges imposed on elite endurance runners during competitions, the information regarding the amateur population is scarce. The aim of this study was to compare the physical and physiological load imposed by competing in a real half-marathon vs a marathon race. METHODS: From a larger group of participants, we selected 22 experienced runners who were matched in pairs (11 marathoners and 11 half-marathoners) for age and anthropometric data...
February 21, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28222044/endocrine-system-on-chip-for-a-diabetes-treatment-model
#2
Dao Thi Thuy Nguyen, Danny van Noort, In-Kyung Jeong, Sungsu Park
The endocrine system is a collection of glands producing hormones which, among others, regulates metabolism, growth and development. One important group of endocrine diseases is diabetes, which is caused by a deficiency or diminished effectiveness of endogenous insulin. By using a microfluidic perfused 3D cell-culture chip, we developed an 'endocrine system on chip' to potentially be able to screen drugs for the treatment of diabetes by measuring insulin release over time. Insulin-secreting β-cells are located in the pancreas, while L-cells, located in the small intestines, stimulate insulin secretion...
February 21, 2017: Biofabrication
https://www.readbyqxmd.com/read/28220971/2d-materials-for-optical-modulation-challenges-and-opportunities
#3
REVIEW
Shaoliang Yu, Xiaoqin Wu, Yipei Wang, Xin Guo, Limin Tong
Owing to their atomic layer thickness, strong light-material interaction, high nonlinearity, broadband optical response, fast relaxation, controllable optoelectronic properties, and high compatibility with other photonic structures, 2D materials, including graphene, transition metal dichalcogenides and black phosphorus, have been attracting increasing attention for photonic applications. By tuning the carrier density via electrical or optical means that modifies their physical properties (e.g., Fermi level or nonlinear absorption), optical response of the 2D materials can be instantly changed, making them versatile nanostructures for optical modulation...
February 21, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28220002/metasurface-polarization-splitter
#4
Brian A Slovick, You Zhou, Zhi Gang Yu, Ivan I Kravchenko, Dayrl P Briggs, Parikshit Moitra, Srini Krishnamurthy, Jason Valentine
Polarization beam splitters, devices that separate the two orthogonal polarizations of light into different propagation directions, are among the most ubiquitous optical elements. However, traditionally polarization splitters rely on bulky optical materials, while emerging optoelectronic and photonic circuits require compact, chip-scale polarization splitters. Here, we show that a rectangular lattice of cylindrical silicon Mie resonators functions as a polarization splitter, efficiently reflecting one polarization while transmitting the other...
March 28, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28219948/genomic-integration-of-wnt-%C3%AE-catenin-and-bmp-smad1-signaling-coordinates-foregut-and-hindgut-transcriptional-program
#5
Mariana L Stevens, Praneet Chaturvedi, Scott A Rankin, Melissa Macdonald, Sajjeev Jagannathan, Masashi Yukawa, Artem Barski, Aaron M Zorn
Digestive system development is orchestrated by combinatorial signaling interactions between endoderm and mesoderm, but how these signals are integrated in the genome is poorly understood. Here we identified the transcriptomes of Xenopus foregut and hindgut progenitors, which are conserved with mammals. Using RNA-seq and ChIP-seq we show that BMP/Smad1 regulates dorsal-ventral gene expression in both the endoderm and mesoderm, whereas Wnt/β-catenin acts as a genome-wide toggle between foregut and hindgut programs...
February 20, 2017: Development
https://www.readbyqxmd.com/read/28219935/novel-insights-into-gastric-cancer-methylation-of-r-spondins-and-regulation-of-lgr5-by-sp1
#6
Franziska Wilhelm, Eva Simon, Christine Boger, Hans-Michael Behrens, Sandra Kruger, Christoph Rocken
: Recently it was shown that leucine-rich repeat-containing receptor 5 (LGR5) expressing stem cells are the cellular origin of intestinal-type gastric cancer. The aim of our study was to uncover regulatory mechanisms of LGR5 expression in gastric mucosa and their implications for cancer development. Reporter assays identified a LGR5 promoter fragment, which is highly relevant for active LGR5 expression. Chromatin immunoprecipitation (ChIP) verified that SP1 is bound within this region and reporter activity increased in SP1 transfected cells...
February 20, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28219444/a-functional-snp-associated-with-atopic-dermatitis-controls-cell-type-specific-methylation-of-the-vstm1-gene-locus
#7
Dilip Kumar, Kia Joo Puan, Anand Kumar Andiappan, Bernett Lee, Geertje H A Westerlaken, Doreen Haase, Rossella Melchiotti, Zhuang Li, Nurhashikin Yusof, Josephine Lum, Geraldine Koh, Shihui Foo, Joe Yeong, Alexessander Couto Alves, Juha Pekkanen, Liang Dan Sun, Astrid Irwanto, Benjamin P Fairfax, Vivek Naranbhai, John E A Common, Mark Tang, Chin Keh Chuang, Marjo-Riitta Jarvelin, Julian C Knight, Xuejun Zhang, Fook Tim Chew, Shyam Prabhakar, Liu Jianjun, De Yun Wang, Francesca Zolezzi, Michael Poidinger, E Birgitte Lane, Linde Meyaard, Olaf Rötzschke
BACKGROUND: Expression quantitative trait loci (eQTL) databases represent a valuable resource to link disease-associated SNPs to specific candidate genes whose gene expression is significantly modulated by the SNP under investigation. We previously identified signal inhibitory receptor on leukocytes-1 (SIRL-1) as a powerful regulator of human innate immune cell function. While it is constitutively high expressed on neutrophils, on monocytes the SIRL-1 surface expression varies strongly between individuals...
February 20, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28219405/ttbk2-circular-rna-promotes-glioma-malignancy-by-regulating-mir-217-hnf1%C3%AE-derlin-1-pathway
#8
Jian Zheng, Xiaobai Liu, Yixue Xue, Wei Gong, Jun Ma, Zhuo Xi, Zhongyou Que, Yunhui Liu
BACKGROUND: Circular RNAs are a subgroup of non-coding RNAs and generated by a mammalian genome. Herein, the expression and function of circular RNA circ-TTBK2 were investigated in human glioma cells. METHODS: Fluorescence in situ hybridization and quantitative real-time PCR were conducted to profile the cell distribution and expression of circ-TTBK2 and microRNA-217 (miR-217) in glioma tissues and cells. Immunohistochemical and western blot were used to determine the expression of HNF1β and Derlin-1 in glioma tissues and cells...
February 20, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28218616/droplet-lasers-a-review-of-current-progress
#9
David McGloin
It is perhaps surprising that something as fragile as a microscopic droplet could possibly form a laser. In this article we will review some of the underpinning physics as to how this might be possible, and then examine the state of the art in the field. The technology to create and manipulate droplets will be examined, as will the different classes of droplet lasers. We will discuss the rapidly developing field of droplet biolasers and explore how droplet lasers could give rise to new bio and chemical sensing and analysis...
February 20, 2017: Reports on Progress in Physics
https://www.readbyqxmd.com/read/28218288/detection-of-viral-respiratory-pathogens-in-mild-and-severe-acute-respiratory-infections-in-singapore
#10
Lili Jiang, Vernon Jian Ming Lee, Lin Cui, Raymond Lin, Chyi Lin Tan, Linda Wei Lin Tan, Wei-Yen Lim, Yee-Sin Leo, Louie Low, Martin Hibberd, Mark I-Cheng Chen
To investigate the performance of laboratory methods and clinical case definitions in detecting the viral pathogens for acute respiratory infections (ARIs) from a prospective community cohort and hospital inpatients, nasopharyngeal swabs from cohort members reporting ARIs (community-ARI) and inpatients admitted with ARIs (inpatient-ARI) were tested by Singleplex Real Time-Polymerase Chain Reaction (SRT-PCR), multiplex RT-PCR (MRT-PCR) and pathogen-chip system (PathChip) between April 2012 and December 2013...
February 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28218237/coherent-control-of-a-strongly-driven-silicon-vacancy-optical-transition-in-diamond
#11
Yu Zhou, Abdullah Rasmita, Ke Li, Qihua Xiong, Igor Aharonovich, Wei-Bo Gao
The ability to prepare, optically read out and coherently control single quantum states is a key requirement for quantum information processing. Optically active solid-state emitters have emerged as promising candidates with their prospects for on-chip integration as quantum nodes and sources of coherent photons connecting these nodes. Under a strongly driving resonant laser field, such quantum emitters can exhibit quantum behaviour such as Autler-Townes splitting and the Mollow triplet spectrum. Here we demonstrate coherent control of a strongly driven optical transition in silicon vacancy centre in diamond...
February 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/28216848/clinical-outcome-of-tooth-supported-fixed-partial-dentures-in-unilateral-cleft-lip-and-palate-patients-a-case-series
#12
Sudhir Bhandari
INTRODUCTION: Cleft lip and palate (CLP) is the most frequent congenital facial abnormality and multidisciplinary treatment extending over many years is necessary to rehabilitate the affected individuals to normal function and esthetics. OBJECTIVE: To evaluate the clinical treatment outcome for missing teeth with tooth supported fixed partial dentures in unilateral cleft lip and palate patients. PATIENTS AND METHODS: Tooth supported fixed partial denture (T-FPD) was utilized for restoration of missing teeth in the cleft area for 9 non syndromic, unilateral cleft lip and palate patients (U-CLP)...
January 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/28216600/csac-characterization-and-its-impact-on-gnss-clock-augmentation-performance
#13
Enric Fernández, David Calero, M Eulàlia Parés
Chip Scale Atomic Clocks (CSAC) are recently-developed electronic instruments that, when used together with a Global Navigation Satellite Systems (GNSS) receiver, help improve the performance of GNSS navigation solutions in certain conditions (i.e., low satellite visibility). Current GNSS receivers include a Temperature Compensated Cristal Oscillator (TCXO) clock characterized by a short-term stability (τ = 1 s) of 10(-9) s that leads to an error of 0.3 m in pseudorange measurements. The CSAC can achieve a short-term stability of 2...
February 14, 2017: Sensors
https://www.readbyqxmd.com/read/28216560/from-sensor-networks-to-internet-of-things-bluetooth-low-energy-a-standard-for-this-evolution
#14
Diego Hortelano, Teresa Olivares, M Carmen Ruiz, Celia Garrido-Hidalgo, Vicente López
Current sensor networks need to be improved and updated to satisfy new essential requirements of the Internet of Things, where cutting-edge applications will appear. These requirements are: total coverage, zero fails (high performance), scalability and sustainability (hardware and software). We are going to evaluate Bluetooth Low Energy as wireless transmission technology and as the ideal candidate for these improvements, due to its low power consumption, its low cost radio chips and its ability to communicate with users directly, using their smartphones or smartbands...
February 14, 2017: Sensors
https://www.readbyqxmd.com/read/28216155/forced-fog1-expression-in-erythroleukemia-cells-induction-of-erythroid-genes-and-repression-of-myelo-lymphoid-transcription-factor-pu-1
#15
Tohru Fujiwara, Katsuyuki Sasaki, Kei Saito, Shunsuke Hatta, Satoshi Ichikawa, Masahiro Kobayashi, Yoko Okitsu, Noriko Fukuhara, Yasushi Onishi, Hideo Harigae
The transcription factor GATA-1-interacting protein Friend of GATA-1 (FOG1) is essential for proper transcriptional activation and repression of GATA-1 target genes; yet, the mechanisms by which FOG1 exerts its activating and repressing functions remain unknown. Forced FOG1 expression in human K562 erythroleukemia cells induced the expression of erythroid genes (SLC4A1, globins) but repressed that of GATA-2 and PU.1. A quantitative chromatin immunoprecipitation (ChIP) analysis demonstrated increased GATA-1 chromatin occupancy at both FOG1-activated as well as FOG1-repressed gene loci...
February 16, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28215635/mechanical-stimulation-promote-the-osteogenic-differentiation-of-bone-marrow-stromal-cells-through-epigenetic-regulation-of-sonic-hedgehog
#16
Chuandong Wang, Shengzhou Shan, Chenglong Wang, Jing Wang, Jiao Li, Guoli Hu, Kerong Dai, Qingfeng Li, Xiaoling Zhang
Mechanical unloading leads to bone loss and disuse osteoporosis partly due to impaired osteoblastogenesis of bone marrow stromal cells (BMSCs). However, the underlying molecular mechanisms of this phenomenon are not fully understood. In this study, we demonstrated that cyclic mechanical stretch (CMS) promotes osteoblastogenesis of BMSCs both in vivo and in vitro. Besides, we found that Hedgehog (Hh) signaling pathway was activated in this process. Inhibition of which by either knockdown of Sonic hedgehog (Shh) or treating BMSCs with Hh inhibitors attenuated the osteogenic effect of CMS on BMSCs, suggesting that Hh signaling pathway acts as an endogenous mediator of mechanical stimuli on BMSCs...
February 16, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28215503/biomaterial-shell-bending-with-3d-printed-templates-in-vertical-and-alveolar-ridge-augmentation-a-technical-note
#17
Florian G Draenert, Florian Gebhart, Gergo Mitov, Andreas Neff
OBJECTIVES: Alveolar ridge and vertical augmentations are challenging procedures in dental implantology. Even material blocks with an interconnecting porous system are never completely resorbed. Shell techniques combined with autologous bone chips are therefore the gold standard. Using biopolymers for these techniques is well documented. We applied three-dimensional (3-D) techniques to create an individualized bending model for the adjustment of a plane biopolymer membrane made of polylactide...
January 4, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28215086/salt-segregation-and-sample-cleanup-on-perfluoro-coated-nanostructured-surfaces-for-laser-desorption-ionization-mass-spectrometry-of-biofluid-samples
#18
Ya Zhou, Chen Peng, Kenneth D Harris, Rupasri Mandal, D Jed Harrison
We present a surface assisted laser desorption ionization (SALDI) technique, coupled with fluorocarbon coating, to achieve selective segregation of ionic and/or hydrophilic analytes from background biofluid electrolytes for quantiatve mass spectrometric analysis. By controlling the contact angle of (1H,1H,2H,2H-perfluorooctyl) trichlorosilane or (1H,1H,2H,2H-perfluorooctyl) dimethylchlorosilane to a specific range (105-120°), background electrolytes can be made to segregate from hydrophilic analytes during a drying step on the surface of a highly nanoporous thin film...
February 19, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28215080/a-scalable-epitope-tagging-approach-for-high-throughput-chip-seq-analysis
#19
Xiong Xiong, Yanxiao Zhang, Jian Yan, Surbhi Jain, Sora Chee, Bing Ren, Huimin Zhao
Eukaryotic transcriptional factors (TFs) typically recognize short genomic sequences alone or together with other proteins to modulate gene expression. Mapping of TF-DNA interactions in the genome is crucial for understanding the gene regulatory programs in cells. While chromatin immunoprecipitation followed by sequencing (ChIP-Seq) is commonly used for this purpose, its application is severely limited by the availability of suitable antibodies for TFs. To overcome this limitation, we developed an efficient and scalable strategy named cmChIP-Seq that combines the clustered regularly interspaced short palindromic repeats (CRISPRs) technology with microhomology mediated end joining (MMEJ) to genetically engineer a TF with an epitope tag...
February 19, 2017: ACS Synthetic Biology
https://www.readbyqxmd.com/read/28214999/e6-associated-protein-dependent-estrogen-receptor-regulation-of-protein-kinase-a-regulatory-subunit-r2a-expression-in-neuroblastoma
#20
Jean-Pierre Obeid, Youssef H Zeidan, Nawal Zafar, Jimmy El Hokayem
E6ap is a known transcriptional coregulator for estrogen receptor alpha (Er, Erα) in the presence of estrogen. Protein kinase A (PKA) contains two regulatory subunits derived from four genes. Recent evidence demonstrates that PKA regulates E6ap activity. Data generated in our lab indicated estrogen dependent regulation of Pkar2a levels. Our project sets to investigate a possible feedback mechanism constituting of Erα and E6ap transcriptional regulation of Pkar2a expression. Western blot evaluated protein regulation correlations with E2 in mouse neuroblastoma lines...
February 18, 2017: Molecular Neurobiology
keyword
keyword
52543
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"