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https://www.readbyqxmd.com/read/29783042/synchronization-of-hybrid-coupled-reaction-diffusion-neural-networks-with-time-delays-via-generalized-intermittent-control-with-spacial-sampled-data
#1
Binglong Lu, Haijun Jiang, Cheng Hu, Abdujelil Abdurahman
The exponential synchronization of hybrid coupled reaction-diffusion neural networks with time delays is discussed in this article. At first, a generalized intermittent control with spacial sampled-data is introduced, which is intermittent in time and data sampling in space. This type of control strategy not only can unify the traditional periodic intermittent control and the aperiodic case, but also can lower the update rate of the controller in both temporal and spatial domains. Next, based on the designed control protocol and the Lyapunov-Krasovskii functional approach, some novel and readily verified criteria are established to guarantee the exponential synchronization of the considered networks...
May 4, 2018: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/29783015/extracts-of-compound-muniziqi-granule-suppressed-uterus-contraction-and-ameliorated-oxytocin-inducedprimary-dysmenorrhea
#2
Yue Wei, Tingyun Ma, Hanxue Wang, Jianguo Xing, Yuwen Wang, Zhengyi Gu, Dandan Mu, Qiang Yin, Xuemei Cheng, Changhong Wang
ETHNOPHARMACOLOGICAL RELEVANCE: Compound Muniziqi granule (CMG) is usually used as a traditional Uighur medicine to treat acne, chloasma, skin inflammation, primary dysmenorrhea (PDM), and menopausal syndrome. However, there are no sufficient data to support the clinic uses of CMG in PDM. AIM OF THE STUDY: This work aims to examine the effect of CMG as a treatment for PDM and reveal its possible therapeutic mechanism. MATERIALS AND METHODS: In vivo and in vitro mouse PDM models were utilized in this study...
May 18, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29782970/underlying-neural-alpha-frequency-patterns-associated-with-intra-hemispheric-inhibition-during-an-interhemispheric-transfer-task
#3
Stephanie L Simon-Dack, Brian Kraus, Zachary Walter, Shelby Smith, Chelsea Cadle
Interhemispheric transfer measured via differences in right- or left-handed motoric responses to lateralized visual stimuli, known as the crossed-uncrossed difference (CUD), is one way of identifying patterns of processing that are vital for understanding the transfer of neural signals. Examination of interhemispheric transfer by means of the CUD is not entirely explained by simple measures of response time. Multiple processes contribute to wide variability observed in CUD reaction times. Prior research has suggested that intra-hemispheric inhibitory processes may be involved in regulation of speed of transfer...
May 18, 2018: Biological Psychology
https://www.readbyqxmd.com/read/29782950/geographic-range-expansion-of-tetrodotoxin-in-amphibians-first-record-in-atelopus-hoogmoedi-from-the-guiana-shield
#4
Dietrich Mebs, Max Lorentz, Mari Yotsu-Yamashita, Daniela C Rößler, Raffael Ernst, Stefan Lötters
For the first time, alcohol extracts of Atelopus hoogmoedi from the Guiana Shield in Suriname and Guyana were analyzed for the presence of tetrodotoxin (TTX) and of its analogues by high resolution hydrophobic interaction liquid chromatography/mass spectrometry. One specimen from Suriname was found to contain TTX and 4-epiTTX. Using a monoclonal antibody-based immunohistochemical staining technique, TTX was localized mainly in the granular glands and epithelium of the skin, but not in internal organs except liver showing weak TTX-positive reaction...
May 18, 2018: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/29782688/oral-yeast-colonization-in-patients-with-primary-and-secondary-sj%C3%A3-gren-s-syndrome
#5
Clarissa Castro Galvão Medeiros, Luiz Gustavo Dos Anjos Borges, Karen Cherubini, Fernanda Gonçalves Salum, Renata Medina da Silva, Maria Antonia Zancanaro de Figueiredo
OBJECTIVE: The study aimed to investigate the pattern of oral yeast colonization of Sjögren's syndrome patients and its correlation to salivary flow rates, age and time of the disease progression. MATERIALS AND METHODS: Saliva and swab specimens were obtained from 45 patients (primary Sjögren's syndrome= 15/ secondary Sjögren's syndrome= 15/ healthy controls= 15). Yeast species were identified using culture method through chromogenic medium followed by polymerase chain reaction and Sanger sequencing...
May 21, 2018: Oral Diseases
https://www.readbyqxmd.com/read/29782683/nife-oxy-hydroxides-derived-from-nife-disulfides-as-an-efficient-oxygen-evolution-catalyst-for-rechargeable-zn-air-batteries-the-effect-of-surface-s-residues
#6
Tanyuan Wang, Gyutae Nam, Yue Jin, Xingyu Wang, Pengju Ren, Min Gyu Kim, Jiashun Liang, Xiaodong Wen, Haeseong Jang, Jiantao Han, Yunhui Huang, Qing Li, Jaephil Cho
A facile H2 O2 oxidation treatment to tune the properties of metal disulfides for oxygen evolution reaction (OER) activity enhancement is introduced. With this method, the degree of oxidation can be readily controlled and the effect of surface S residues in the resulted metal (oxy)hydroxides for the OER is revealed for the first time. The developed NiFe (oxy)hydroxide catalyst with residual S demonstrates an extraordinarily low OER overpotential of 190 mV at the current density of 10 mA cm-2 after coupling with carbon nanotubes, and outstanding performance in Zn-air battery tests...
May 21, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29782509/maternal-cardiovascular-and-endothelial-function-from-first-trimester-to-postpartum
#7
Vassiliki Kolovetsiou-Kreiner, Manfred Georg Moertl, Ilona Papousek, Karin Schmid-Zalaudek, Uwe Lang, Dietmar Schlembach, Mila Cervar-Zivkovic, Helmut Karl Lackner
OBJECTIVE: To explore noninvasively the complex interactions of the maternal hemodynamic system throughout pregnancy and the resulting after-effect six weeks postpartum. METHODS: Eighteen women were tested beginning at the 12th week of gestation at six time-points throughout pregnancy and six weeks postpartum. Heart rate, heart rate variability, blood pressure, pulse transit time (PTT), respiration, and baroreceptor sensitivity were analyzed in resting conditions...
2018: PloS One
https://www.readbyqxmd.com/read/29782308/activation-of-herpes-simplex-infection-after-tattoo
#8
Antigona Begolli Gerqari, Mybera Ferizi, Merita Kotori, Aferdita Daka, Syzana Hapciu, Ilir Begolli, Mirije Begolli, Idriz Gerqari
Tattooing is a procedure where ink is applied to an area of the skin, mostly intraepidermally (1). This procedure is carried out mainly for aesthetic purposes. Lately, it has been used as a corrective medical procedure following amputation of mammilla. The procedure is aggressive (2), and the fact that skin is punctured many times with the same needle which cannot be fully sterilized may cause infection of the treated area with bacterial, fungal, or viral agents that may lead to health consequences manifesting in the form of verrucae vulgaris, molluscum contagiosum, and herpes simplex...
April 2018: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/29782168/rapid-aqueous-phase-hydrolysis-of-ester-hydroperoxides-arising-from-criegee-intermediates-and-organic-acids
#9
Ran Zhao, Christopher M Kenseth, Yuanlong Huang, Nathan F Dalleska, Xiaobi Michelle Kuang, Jierou Chen, Suzanne E Paulson, John H Seinfeld
Stabilized Criegee intermediates react with organic acids in the gas phase and at the air-water interface to form a class of ester hydroperoxides, α-acyloxyalkyl hydroperoxides (αAAHPs). A number of recent studies have proposed the importance of αAAHPs to the formation and growth of secondary organic aerosol (SOA). The chemistry of αAAHPs has not been investigated due to a lack of commercially available chemical standards. In this work, the behavior of αAAHPs in condensed phases is investigated for the first time...
May 21, 2018: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29782162/water-and-fertilizer-integrated-hydrogel-derived-from-the-polymerization-of-acrylic-acid-and-urea-as-a-slow-release-n-fertilizer-and-water-retention-in-agriculture
#10
Dongdong Cheng, Yan Liu, Guiting Yang, Aiping Zhang
To reduce the preparation cost of superabsorbent and improve the N release rate at the same time, a novel low cost superabsorbent (SA) with the function of N slow release was prepared by chemical synthesis with neutralized acrylic acid (AA), urea, potassium persulfate (KPS) and N,N'-methylenebisacrylamide (MBA). The influence order of influence factors on water absorbency property was determined by orthogonal L18(3)7 experiment. Based on the optimization results of orthogonal experiment, the effects of single factor on the water absorption were studied, and the highest water absorbency (909 g/g) was obtained on the conditions: 1...
May 21, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29782141/in-situ-assembly-of-well-dispersed-ag-nanoparticles-throughout-electrospun-alginate-nanofibers-for-monitoring-human-breath-smart-fabrics
#11
Jun Zhang, Xiao-Xiong Wang, Bin Zhang, Seeram Ramakrishna, Miao Yu, Jian-Wei Ma, Yun-Ze Long
Alginate nanofibers assembled with sliver nanoparticles throughout the whole nanofiber were fabricated by three steps including electrospinning of Na-alginate nanofibers, ion exchange between the sodium and silver ions, and in situ reduction of silver nanoparticles. The content, distribution and size of the nanoparticles are controllable by tuning reaction conditions. Ag/alginate nanofibers exhibit good humidity sensitivity in a wide humidity range from ambient RH (20%) to 85% RH. Interestingly, these humidity sensors can be attached to a 3M-9001V mask for monitoring human breath during exercise and emotion changes, and this smart exhibits accurate and continuous human-breath tracking no matter how fast or slow as well as how deep or shallow...
May 21, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29782140/fluorescent-labeling-of-the-nuclear-envelope-by-localizing-gfp-on-the-inner-nuclear-membrane
#12
Toshiyuki Taniyama, Natsumi Tsuda, Shinji Sueda
The nuclear envelope (NE) is a double membrane that segregates nuclear components from the cytoplasm in eukaryote cells. It is well-known that the NE undergoes a breakdown and reformation during mitosis in animal cells. However, the detailed mechanisms of the NE dynamics are not yet fully understood. Here, we propose a method for the fluorescent labeling of the NE in living cells, which enables the tracing of the NE dynamics during cell division under physiological conditions. In our method, labeling of the NE is accomplished by fixing green fluorescent protein carrying the nuclear localization signal on the inner nuclear membrane based on a unique biotinylation reaction from the archaeon Sulfolobus tokodaii...
May 21, 2018: ACS Chemical Biology
https://www.readbyqxmd.com/read/29782024/investigation-of-rna-synthesis-using-5-bromouridine-labelling-and-immunoprecipitation
#13
Rikke H Kofoed, Cristine Betzer, Søren Lykke-Andersen, Ewa Molska, Poul H Jensen
When steady state RNA levels are compared between two conditions, it is not possible to distinguish whether changes are caused by alterations in production or degradation of RNA. This protocol describes a method for measurement of RNA production, using 5-Bromouridine labelling of RNA followed by immunoprecipitation, which enables investigation of RNA synthesized within a short timeframe (e.g., 1 h). The advantage of 5-Bromouridine-labelling and immunoprecipitation over the use of toxic transcriptional inhibitors, such as α-amanitin and actinomycin D, is that there are no or very low effects on cell viability during short-term use...
May 3, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29782010/isolation-of-mesenchymal-stem-cells-from-human-alveolar-periosteum-and-effects-of-vitamin-d-on-osteogenic-activity-of-periosteum-derived-cells
#14
Yen-Li Wang, Adrienne Hong, Tzung-Hai Yen, Hsiang-Hsi Hong
Mesenchymal stem cells (MSCs) are present in a variety of tissues and can be differentiated into numerous cell types, including osteoblasts. Among the dental sources of MSCs, the periosteum is an easily accessible tissue, which has been identified to contain MSCs in the cambium layer. However, this source has not yet been widely studied. Vitamin D3 and 1,25-(OH)2D3 have been demonstrated to stimulate in vitro differentiation of MSCs into osteoblasts. In addition, vitamin C facilitates collagen formation and bone cell growth...
May 4, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29781982/the-motor-in-implicit-motor-sequence-learning-a-foot-stepping-serial-reaction-time-task
#15
Yue Du, Jane E Clark
This protocol describes a modified serial reaction time (SRT) task used to study implicit motor sequence learning. Unlike the classic SRT task that involves finger-pressing movements while sitting, the modified SRT task requires participants to step with both feet while maintaining a standing posture. This stepping task necessitates whole body actions that impose postural challenges. The foot-stepping task complements the classic SRT task in several ways. The foot-stepping SRT task is a better proxy for the daily activities that require ongoing postural control, and thus may help us better understand sequence learning in real-life situations...
May 3, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29781892/evidence-for-the-perception-of-time-distortion-during-episodes-of-alice-in-wonderland-syndrome
#16
Yu Jia, Ying Miao
Alice in Wonderland syndrome (AIWS) is a rare perceptual disorder associated with sensation of one or several visual and/or auditory perceptual distortions including size of body parts, size of external objects, or passage of time (either speeding up or slowing down). Cause for AIWS is yet to be widely agreed, and the implications are widely varied. One of the research difficulties is the brevity of each episode, typically not exceeding few tens of minutes. This article presents a male adult in late 20s who has apparently experienced AIWS episodes since childhood, and infection has been ruled out...
May 17, 2018: Journal of Nervous and Mental Disease
https://www.readbyqxmd.com/read/29781658/rapid-instruction-based-task-learning-ritl-in-schizophrenia
#17
Julia M Sheffield, Hannes Ruge, Sridhar Kandala, Deanna M Barch
Individuals with schizophrenia demonstrate broad impairments in neurocognitive functioning as measured through laboratory-based tasks. Neuropsychological measures depend on rapid instruction-based task learning (RITL), the ability to rapidly translate task instruction into goal-directed behavior. Here, the authors present the first known investigation of RITL in schizophrenia and aim to test whether RITL deficits exist in schizophrenia, are associated with abnormal brain activation, and contribute to the generalized cognitive deficit...
May 21, 2018: Journal of Abnormal Psychology
https://www.readbyqxmd.com/read/29781608/characterization-of-the-il-electrode-interfacial-relaxation-processes-under-potential-polarization-for-ionic-liquid-amperometric-gas-sensor-method-development
#18
Lu Lin, Peng Zhao, Andrew J Mason, Xiangqun Zeng
Electrochemical amperometric sensors require a constant or varying potential at the working electrode that drives redox reactions of the analyte for detection. The interfacial redox reaction(s) can result in the formation of new chemical products that could change the initial condition of the electrode/electrolyte interface. If the products are not inert and/or cannot be removed from the system or if the initial condition of the electrode/electrolyte interface cannot be restored, the sensor signal baseline would consequently drift which is problematic for the continuous and real-time sensors...
May 21, 2018: ACS Sensors
https://www.readbyqxmd.com/read/29781507/effect-of-estradiol-on-fibroblasts-from-postmenopausal-idiopathic-carpal-tunnel-syndrome-patients
#19
Yoshiaki Yamanaka, Kunitaka Menuki, Takafumi Tajima, Yasuaki Okada, Kenji Kosugi, Yukichi Zenke, Akinori Sakai
Fibrosis of the subsynovial connective tissue (SSCT) is a characteristic finding in patients with idiopathic carpal tunnel syndrome (CTS). Idiopathic CTS frequently occurs in postmenopausal women; therefore, female steroid hormones, especially estrogens, may be involved in its development. In this study, we evaluated the effect of the estradiol on the expression of genes and proteins related to fibrosis of SSCT fibroblasts from patients with idiopathic CTS. This study included 10 postmenopausal women (mean age 76 years)...
May 21, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29781480/polydisperse-emulsion-digital-assay-to-enhance-time-to-detection-and-extend-dynamic-range-in-bacterial-cultures-enabled-by-a-statistical-framework
#20
Samantha A Byrnes, Elizabeth A Phillips, Toan Huynh, Bernhard H Weigl, Kevin P Nichols
Microbiological culture remains the most sensitive method for detecting viable and infectious bacteria, but these methods often require at least 24 hours to visibly identify bacterial growth. Lab-on-a-chip applications have utilized methods to isolate bacteria in picoliter-sized reaction vessels, resulting in digitized signals that offer improved time-to-detection and improved quantification. Although a great improvement, these approaches typically require expensive and specialized equipment, trained laboratory personnel, and maximum addressable volumes that can be orders of magnitude less than needed for clinically relevant limits of detection...
May 21, 2018: Analyst
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