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https://www.readbyqxmd.com/read/28931066/finite-time-synchronization-of-memristor-based-cohen-grossberg-neural-networks-with-mixed-delays
#1
Chuan Chen, Lixiang Li, Haipeng Peng, Yixian Yang
Finite time synchronization, which means synchronization can be achieved in a settling time, is desirable in some practical applications. However, most of the published results on finite time synchronization don't include delays or only include discrete delays. In view of the fact that distributed delays inevitably exist in neural networks, this paper aims to investigate the finite time synchronization of memristor-based Cohen-Grossberg neural networks (MCGNNs) with both discrete delay and distributed delay (mixed delays)...
2017: PloS One
https://www.readbyqxmd.com/read/28930547/use-of-non-ionizing-electromagnetic-fields-for-the-treatment-of-cancer
#2
Hugo Jimenez, Carl Blackman, Glenn Lesser, Waldemar Debinski, Michael Chan, Sambad Sharma, Kounosuke Watabe, Hui-Wen Lo, Alexandra Thomas, Dwayne Godwin, William Blackstock, Albert Mudry, James Posey, Rodney O'Connor, Ivan Brezovich, Keith Bonin, Daniel Kim-Shapiro, Alexandre Barbault, Boris Pasche
Cancer treatment and treatment options are quite limited in circumstances such as when the tumor is inoperable, in brain cancers when the drugs cannot penetrate the blood-brain-barrier, or when there is no tumor-specific target for generation of effective therapeutic antibodies. Despite the fact that electromagnetic fields (EMF) in medicine have been used for therapeutic or diagnostic purposes, the use of non-ionizing EMF for cancer treatment is a new emerging concept. Here we summarize the history of EMF from the 1890's to the novel and new innovative methods that target and treat cancer by non-ionizing radiation...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28930470/structure-related-roles-for-the-conservation-of-the-hiv-1-fusion-peptide-sequence-revealed-by-nmr
#3
Soraya Serrano, Nerea Huarte, Edurne Rujas, David Andreu, Jose L Nieva, M Angeles Jimenez
Despite extensive characterization of the human immunodeficiency virus type-1 (HIV-1) hydrophobic fusion peptide (FP), the structure-function relationships underlying its extraordinary degree of conservation remain poorly understood. Specifically, the fact that the tandem repeat of the tripeptide FLGFLG is absolutely conserved suggests that high hydrophobicity may not suffice to unleash FP function. Here, we have compared the NMR structures adopted in nonpolar media by two FP surrogates, wtFP-tag and scrFP-tag, which had equal hydrophobicity but contained wild-type and scrambled core sequences LFLGFLG and FGLLGFL, respectively...
September 20, 2017: Biochemistry
https://www.readbyqxmd.com/read/28930447/ultra-sensitive-quantitation-of-plasma-membrane-proteins-via-isrta
#4
Tao Gao, Bei Wang, Liu Shi, Xiaoli Zhu, Yang Xiang, Jun-Ichi Anzai, Genxi Li
Quantitation of plasma membrane proteins (PMPs) are fundamental and frequently performed in the daily lab-work. However, challenged by inherent/interacted hetero-structures and complex surroundings of the PMPs in lipid membrane, quantitative techniques for PMP often require complex treatments (e.g. labelling, isolation, purification, and determination), and the sensitivity is usually not satisfactory. To address the problem, we have proposed a novel method that enables quantitation of PMPs with extremely high sensitivity, in an easier-to-manipulate and more streamlined way...
September 20, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28930362/rapid-development-of-specialty-population-registries-and-quality-measures-from-electronic-health-record-data-an-agile-framework
#5
Vaishnavi Kannan, Jason S Fish, Jacqueline M Mutz, Angela R Carrington, Ki Lai, Lisa S Davis, Josh E Youngblood, Mark R Rauschuber, Kathryn A Flores, Evan J Sara, Deepa G Bhat, DuWayne L Willett
BACKGROUND: Creation of a new electronic health record (EHR)-based registry often can be a "one-off" complex endeavor: first developing new EHR data collection and clinical decision support tools, followed by developing registry-specific data extractions from the EHR for analysis. Each development phase typically has its own long development and testing time, leading to a prolonged overall cycle time for delivering one functioning registry with companion reporting into production. The next registry request then starts from scratch...
June 14, 2017: Methods of Information in Medicine
https://www.readbyqxmd.com/read/28930350/vertical-dielectric-screening-of-few-layer-van-der-waals-semiconductors
#6
Jahyun Koo, Shiyuan Gao, Hoonkyung Lee, Li Yang
Vertical dielectric screening is a fundamental parameter of few-layer van der Waals two-dimensional (2D) semiconductors. However, unlike the widely-accepted wisdom claiming that the vertical dielectric screening is sensitive to the thickness, our first-principles calculation based on the linear response theory (within the weak field limit) reveals that this screening is independent of the thickness and, in fact, it is the same as the corresponding bulk value. This conclusion is verified in a wide range of 2D paraelectric semiconductors, covering narrow-gap ones and wide-gap ones with different crystal symmetries, providing an efficient and reliable way to calculate and predict static dielectric screening of reduced-dimensional materials...
September 20, 2017: Nanoscale
https://www.readbyqxmd.com/read/28930309/a-global-method-for-handling-fluorescence-spectra-at-high-concentration-derived-from-the-competition-between-emission-and-absorption-of-colloidal-cdte-quantum-dots
#7
Thomas Noblet, Laurent Dreesen, Julie Hottechamps, Christophe Humbert
We investigate the effects of the concentration of CdTe quantum dots (QDs) on their fluorescence in water. The emission spectra, acquired in right angle geometry, exhibit highly variable shapes. The measurements evidence a critical value of the concentration beyond which the intensity and the spectral bandwidth decrease and the fluorescence maximum is redshifted. To account for these observations, we develop a model based on the primary and secondary inner filter effects. The accuracy of the model ensures that the concentration dependent behaviour of QD fluorescence is completely due to inner filter effects...
September 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28930243/traditional-small-size-citrus-from-taiwan-essential-oils-bioactive-compounds-and-antioxidant-capacity
#8
Min-Hung Chen, Kai-Min Yang, Tzou-Chi Huang, Mei-Li Wu
Background: The calamondin (Citrus microcarpa Bunge) and the kumquat (Fortunella crassifolia Swingle) are two small-size citrus fruits that have traditionally been consumed in Taiwan; however, there has been a lack of scientific research regarding the active compounds and functionalities of these fruits. Methods: Analysis of volatile composition of essential oil and phytosterol was carried out using Gas Chromatography-Mass Spectrometry (GC-MS). Flavonoid and limonoid were analyzed by High Performance Liquid Chromatography (HPLC)...
May 8, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28930000/higher-parental-perceptions-of-wealth-associated-with-the-birth-of-more-sons-in-an-australian-population
#9
A M Behie, M H O'Donnell
Many industrialized nations are currently experiencing a decline in average secondary sex ratio (SSR) resulting in fewer boys being born relative to girls. While many potential factors may explain the decline in the birth of males relative to females, it seems most studies support the idea that male offspring are produced less often when environmental conditions are poor owing to males being more susceptible to loss in harsh environments. This study investigates the maternal factors that are associated with the sex of offspring in a cohort of the Australian population...
September 20, 2017: Journal of Biosocial Science
https://www.readbyqxmd.com/read/28929965/-a-negleted-bacteria-with-a-case-bartonella-henselae
#10
Kamuran Türker, Bekir Çelebi, Şeyda Andaç, Pınar Bulut, Şenay Yalçın, Saniye Dolhan
Bartonella henselae the causative agent of cat scratch disease (CSD), is a gram-negative, coccobacillus, facultative intracellular bacterium CSD usually presents as a clinical form of benign local lymphadenopathy (LAP) but sometimes it may progress to severe life threatening complications. Despite the fact that CSD is known to be a common disease, which is one of the important causes of local LAPs in the world, there are few publications in our country. For the diagnosis, the clinician should suspect for CSD and has to ask to the patient whether there is a story of cat scratch or not...
July 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28929958/-screening-of-corynebacterium-diphtheriae-corynebacterium-ulcerans-and-corynebacterium-pseudotuberculosis-in-throat-swab-specimens-of-children-with-upper-respiratory-tract-infections
#11
Zeynep Gökçe Gayretli Aydın, Gönül Tanır, Selin Nar Ötgün, Meral Turan, Türkan Aydın Teke, Ayşe Kaman, Selçuk Kılıç
Although a significant decrease has been reported in the incidence of diphteria in many regions of the world following the routine diphtheria immunization programs, the emergence of new cases indicated that toxigenic strains are still circulating in the community. Diphtheria vaccine does not provide protection against asymptomatic carriage and colonization of non-toxigenic Corynebacterium diphtheriae. It is a known fact that invasive infections may arise from non-toxigenic C.diphtheriae strains that the non-toxigenic strains can become toxigenic strains leading to diphteria...
July 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28929578/horizontal-transfer-of-mir-23a-from-hypoxic-tumor-cell-colonies-can-induce-angiogenesis
#12
T V Sruthi, Lincy Edatt, Grace R Raji, Haritha K, S Sharath Shankar, Vandana Shankar, Vishnu R, Aswini P, V B Sameer Kumar
Neo vessel formation by angiogenesis is an important event during many pathological conditions including cancer, where it is indispensable for tumor growth and survival. Although, various pro-angiogenic cytokines and soluble factors, secreted by tumor cells, have been reported to promote angiogenesis, recent studies have shown regulatory role of exosomes, secreted by tumor cells in the process of angiogenesis. These exosomes are capable of carrying nucleic acids, proteins etc. as their cargo. Under the light of these facts and considering the presence of miRNAs, the non-coding RNAs capable of regulating target gene expression, as one of the major cargos in the exosomes, we investigated, whether exosomes derived from normoxic and hypoxic tumor cell colonies exhibit difference in levels of miR-23∼27∼24 cluster members and if so, to check the significance of their horizontall transfer on the process of angiogenesis...
September 20, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28929324/stress-ulcer-prophylaxis-in-neurocritical-care
#13
Jeffrey F Barletta, Alicia J Mangram, Joseph F Sucher, Victor Zach
Stress ulcer prophylaxis (SUP) with acid-suppressive drug therapy is widely utilized in critically ill patients following neurologic injury for the prevention of clinically important stress-related gastrointestinal bleeding (CIB). Data supporting SUP, however, largely originates from studies conducted during an era where practices were vastly different than what is considered routine by today's standard. This is particularly true in neurocritical care patients. In fact, the routine provision of SUP has been challenged due to an increasing prevalence of adverse drug events with acid-suppressive therapy and the perception that CIB rates are sparse...
September 19, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28929298/chronic-kidney-disease-and-anticoagulation-from-vitamin-k-antagonists-and-heparins-to-direct-oral-anticoagulant-agents
#14
REVIEW
Savino Sciascia, Massimo Radin, Karen Schreiber, Roberta Fenoglio, Simone Baldovino, Dario Roccatello
Anticoagulation in patients with impaired kidney function can be challenging since drugs' pharmacokinetics and bioavailability are altered in this setting. Patients with chronic kidney disease (CKD) treated with conventional anticoagulant agents [vitamin K antagonist (VKA), low-molecular weight heparin (LMWH) or unfractionated heparin (UFH)] are at high risk of bleeding events (both non-major and major clinically relevant bleeding). While anticoagulation reduces the risk of thromboembolic events, the co-existing bleeding risk and the fact that the most commonly used anticoagulation agents are eliminated via the kidneys pose additional challenges...
September 19, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28929295/characterization-of-phenolic-pellets-for-esr-dosimetry-in-photon-beam-radiotherapy
#15
Salvatore Gallo, Giuseppina Iacoviello, Salvatore Panzeca, Ivan Veronese, Antonio Bartolotta, Daniele Dondi, Anna Maria Gueli, Gianfranco Loi, Anna Longo, Eleonora Mones, Maurizio Marrale
This work deals with the dosimetric features of a particular phenolic compound (IRGANOX 1076(®)) for dosimetry of clinical photon beams by using electron spin resonance (ESR) spectroscopy. After the optimization of the ESR readout parameters (namely modulation amplitude and microwave power) to maximise the signal without excessive spectrum distortions, basic dosimetric properties of laboratory-made phenolic dosimeters in pellet form, such as reproducibility, dose-response, sensitivity, linearity and dose rate dependence were investigated...
September 19, 2017: Radiation and Environmental Biophysics
https://www.readbyqxmd.com/read/28929072/type-1-tympanoplasty-by-cartilage-palisade-and-temporalis-fascia-technique-a-comparison
#16
Nikhil Arora, J C Passey, A K Agarwal, R Bansal
(1) To compare graft take up of type-1 tympanoplasty with cartilage palisade technique with those of type-1 tympanoplasty using autotemporalis fascia. (2) To compare hearing results of type 1 tympanoplasty with cartilage palisade technique with those of type-1 tympanoplasty using autotemporalis fascia. A prospective clinical study. It consisted of 60 patients divided into two groups of 30 patients each. After randomization 30 patients underwent type 1 tympanoplasty using cartilage palisade technique and 30 underwent type 1 tympanoplasty using autotemporalis fascia...
September 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/28928794/mechanistic-model-for-cancer-growth-and-response-to-chemotherapy
#17
Eman Simbawa
Cancer treatment has developed over the years; however not all patients respond to this treatment, and therefore further research is needed. In this paper, we employ mathematical modeling to understand the behavior of cancer and its interaction with therapy. We study a drug delivery and drug-cell interaction model along with cell proliferation. Due to the fact that cancer cells grow when there are enough nutrients and oxygen, proliferation can be a barrier against a response to therapy. To understand the effect of this factor, we perform numerical simulations of the model for different values of the parameters with a continuous delivery of the drug...
2017: Computational and Mathematical Methods in Medicine
https://www.readbyqxmd.com/read/28928683/selfie-takers-prefer-left-cheeks-converging-evidence-from-the-extended-selfiecity-database
#18
Lev Manovich, Vera Ferrari, Nicola Bruno
According to previous reports, selfie takers in widely different cultural contexts prefer poses showing the left cheek more than the right cheek. This posing bias may be interpreted as evidence for a right-hemispheric specialization for the expression of facial emotions. However, earlier studies analyzed selfie poses as categorized by human raters, which raises methodological issues in relation to the distinction between frontal and three-quarter poses. Here, we provide converging evidence by analyzing the (extended) selfiecity database which includes automatic assessments of head rotation and of emotional expression...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28928664/yougui-pills-attenuate-cartilage-degeneration-via-activation-of-tgf-%C3%AE-smad-signaling-in-chondrocyte-of-osteoarthritic-mouse-model
#19
Lei Zhang, Ping-Er Wang, Jun Ying, Xing Jin, Cheng Luo, Taotao Xu, Shibing Xu, Rui Dong, Luwei Xiao, Peijian Tong, Hongting Jin
Yougui pills (YGPs) have been used for centuries in the treatment of Chinese patients with Kidney-Yang Deficiency Syndrome. Despite the fact that the efficiency of YGPs on treating osteoarthritis has been verified in clinic, the underlying mechanisms are not totally understood. The present study observes the therapeutic role of YGPs and mechanisms underlying its chondroprotective action in osteoarthritic cartilage. To evaluate the chondroprotective effects of YGPs, we examined the impact of orally administered YGPs in a model of destabilization of the medial meniscus (DMM)...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28928456/enabling-stop-codon-read-through-translation-in-bacteria-as-a-probe-for-amyloid-aggregation
#20
Laura Molina-García, Rafael Giraldo
Amyloid aggregation of the eukaryotic translation terminator eRF3/Sup35p, the [PSI (+)] prion, empowers yeast ribosomes to read-through UGA stop codons. No similar functional prion, skipping a stop codon, has been found in Escherichia coli, a fact possibly due to the efficient back-up systems found in bacteria to rescue non-stop complexes. Here we report that engineering hydrophobic amyloidogenic repeats from a synthetic bacterial prion-like protein (RepA-WH1) into the E. coli releasing factor RF1 promotes its aggregation and enables ribosomes to continue with translation through a premature UAG stop codon located in a β-galactosidase reporter...
September 19, 2017: Scientific Reports
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