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https://www.readbyqxmd.com/read/28335585/anisotropic-magnetoresistance-of-nano-conductive-filament-in-co-hfo2-pt-resistive-switching-memory
#1
Leilei Li, Yang Liu, Jiao Teng, Shibing Long, Qixun Guo, Meiyun Zhang, Yu Wu, Guanghua Yu, Qi Liu, Hangbing Lv, Ming Liu
Conductive bridge random access memory (CBRAM) has been extensively studied as a next-generation non-volatile memory. The conductive filament (CF) shows rich physical effects such as conductance quantization and magnetic effect. But so far, the study of filaments is not very sufficient. In this work, Co/HfO2/Pt CBRAM device with magnetic CF was designed and fabricated. By electrical manipulation with a partial-RESET method, we controlled the size of ferromagnetic metal filament. The resistance-temperature characteristics of the ON-state after various partial-RESET behaviors have been studied...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28335577/gc-ms-metabolomic-analysis-to-reveal-the-metabolites-and-biological-pathways-involved-in-the-developmental-stages-and-tissue-response-of-panax-ginseng
#2
Jia Liu, Yang Liu, Yu Wang, Ann Abozeid, Yuan-Gang Zu, Xiao-Ning Zhang, Zhong-Hua Tang
Ginsenosides, the major compounds present in ginseng, are known to have numerous physiological and pharmacological effects. The physiological processes, enzymes and genes involved in ginsenoside synthesis in P. ginseng have been well characterized. However, relatively little information is known about the dynamic metabolic changes that occur during ginsenoside accumulation in ginseng. To explore this topic, we isolated metabolites from different tissues at different growth stages, and identified and characterized them by using gas chromatography coupled with mass spectrometry (GC-MS)...
March 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28335573/ultratrace-detection-of-histamine-using-a-molecularly-imprinted-polymer-based-voltammetric-sensor
#3
Maedeh Akhoundian, Axel Rüter, Sudhirkumar Shinde
Rapid and cost-effective analysis of histamine, in food, environmental, and diagnostics research has been of interest recently. However, for certain applications, the already-existing biological receptor-based sensing methods have usage limits in terms of stability and costs. As a result, robust and cost-effective imprinted polymeric receptors can be the best alternative. In the present work, molecularly-imprinted polymers (MIPs) for histamine were synthesized using methacrylic acid in chloroform and acetonitrile as two different porogens...
March 21, 2017: Sensors
https://www.readbyqxmd.com/read/28335571/3-substituted-n-benzylpyrazine-2-carboxamide-derivatives-synthesis-antimycobacterial-and-antibacterial-evaluation
#4
Lucia Semelková, Ondřej Janďourek, Klára Konečná, Pavla Paterová, Lucie Navrátilová, František Trejtnar, Vladimír Kubíček, Jiří Kuneš, Martin Doležal, Jan Zitko
A series of substituted N-benzyl-3-chloropyrazine-2-carboxamides were prepared as positional isomers of 5-chloro and 6-chloro derivatives, prepared previously. During the aminolysis of the acyl chloride, the simultaneous substitution of chlorine with benzylamino moiety gave rise to N-benzyl-3-(benzylamino)pyrazine-2-carboxamides as side products, in some cases. Although not initially planned, the reaction conditions were modified to populate this double substituted series. The final compounds were tested against four mycobacterial strains...
March 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28335570/an-improved-multi-sensor-fusion-navigation-algorithm-based-on-the-factor-graph
#5
Qinghua Zeng, Weina Chen, Jianye Liu, Huizhe Wang
An integrated navigation system coupled with additional sensors can be used in the Micro Unmanned Aerial Vehicle (MUAV) applications because the multi-sensor information is redundant and complementary, which can markedly improve the system accuracy. How to deal with the information gathered from different sensors efficiently is an important problem. The fact that different sensors provide measurements asynchronously may complicate the processing of these measurements. In addition, the output signals of some sensors appear to have a non-linear character...
March 21, 2017: Sensors
https://www.readbyqxmd.com/read/28335565/an-eco-safety-assessment-of-glyoxal-containing-cellulose-ether-on-freeze-dried-microbial-strain-cyanobacteria-daphnia-and-zebrafish
#6
Chang-Beom Park, Min Ju Song, Nak Woon Choi, Sunghoon Kim, Hyun Pyo Jeon, Sanghun Kim, Youngjun Kim
The objective of this study was to investigate the aquatic-toxic effects of glyoxal-containing cellulose ether with four different glyoxal concentrations (0%, 1.4%, 2.3%, and 6.3%) in response to global chemical regulations, e.g., European Union Classification, Labeling and Packaging (EU CLP). Toxicity tests of glyoxal-containing cellulose ether on 11 different microbial strains, Microcystis aeruginosa, Daphnia magna, and zebrafish embryos were designed as an initial stage of toxicity screening and performed in accordance with standardized toxicity test guidelines...
March 21, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28335564/passage-through-the-ocular-barriers-and-beneficial-effects-in-retinal-ischemia-of-topical-application-of-pacap1-38-in-rodents
#7
Dora Werling, William A Banks, Therese S Salameh, Timea Kvarik, Laszlo Akos Kovacs, Alexandra Vaczy, Edina Szabo, Flora Mayer, Rita Varga, Andrea Tamas, Gabor Toth, Zsolt Biro, Tamas Atlasz, Dora Reglodi
The neuropeptide pituitary adenylate cyclase activating polypeptide (PACAP) has two active forms, PACAP1-27 and PACAP1-38. Among the well-established actions are PACAP's neurotrophic and neuroprotective effects, which have also been proven in models of different retinopathies. The route of delivery is usually intravitreal in studies proving PACAP's retinoprotective effects. Recently, we have shown that PACAP1-27 delivered as eye drops in benzalkonium-chloride was able to cross the ocular barriers and exert retinoprotection in ischemia...
March 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28335563/the-effects-of-sweet-foods-on-the-pharmacokinetics-of-glycyrrhizic-acid-by-icelisa
#8
Bingqian Jiang, Huihua Qu, Hui Kong, Yue Zhang, Shuchen Liu, Jinjun Cheng, Xin Yan, Yan Zhao
The effect of sweet foods, such as honey, was investigated from the perspective of pharmacokinetics on the absorption of glycyrrhizic acid (GA). Due to the unique properties of indirect competitive enzyme-linked immunosorbent assay (icELISA), namely, its: specificity, sensitivity, repeatability, simple pretreatment of samples, fast and simple operation, and because it is economic and non-polluting, it has received increased attention. In this study, we used the advantages of this method to see how honey affected the pharmacokinetics of GA...
March 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28335557/ros-production-and-erk-activity-are-involved-in-the-effects-of-d-%C3%AE-hydroxybutyrate-and-metformin-in-a-glucose-deficient-condition
#9
Santosh Lamichhane, Tonking Bastola, Ramesh Pariyar, Eun-Sol Lee, Ho-Sub Lee, Dae Ho Lee, Jungwon Seo
Hypoglycemia, a complication of insulin or sulfonylurea therapy in diabetic patients, leads to brain damage. Furthermore, glucose replenishment following hypoglycemic coma induces neuronal cell death. In this study, we investigated the molecular mechanism underlying glucose deficiency-induced cytotoxicity and the protective effect of d-β-hydroxybutyrate (D-BHB) using SH-SY5Y cells. The cytotoxic mechanism of metformin under glucose deficiency was also examined. Cell viability under 1 mM glucose (glucose deficiency) was significantly decreased which was accompanied by increased production of reactive oxygen species (ROS) and decreased phosphorylation of extracellular signal-regulated kinase (ERK) and glycogen synthase 3 (GSK3β)...
March 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28335546/dietary-protein-and-amino-acid-supplementation-in-inflammatory-bowel-disease-course-what-impact-on-the-colonic-mucosa
#10
REVIEW
Sandra Vidal-Lletjós, Martin Beaumont, Daniel Tomé, Robert Benamouzig, François Blachier, Annaïg Lan
Inflammatory bowel diseases (IBD), after disease onset, typically progress in two cyclically repeated phases, namely inflammatory flare and remission, with possible nutritional status impairment. Some evidence, either from epidemiological, clinical, and experimental studies indicate that the quantity and the quality of dietary protein consumption and amino acid supplementation may differently influence the IBD course according to the disease phases. For instance, although the dietary protein needs for mucosal healing after an inflammatory episode remain undetermined, there is evidence that amino acids derived from dietary proteins display beneficial effects on this process, serving as building blocks for macromolecule synthesis in the wounded mucosal area, energy substrates, and/or precursors of bioactive metabolites...
March 21, 2017: Nutrients
https://www.readbyqxmd.com/read/28335544/combination-effect-of-antituberculosis-drugs-and-ethanolic-extract-of-selected-medicinal-plants-against-multi-drug-resistant-mycobacterium-tuberculosis-isolates
#11
Prabasiwi Nur Fauziyah, Elin Yulinah Sukandar, Dhyan Kusuma Ayuningtyas
Adverse drug reaction and resistance to antituberculosis drugs remain the causes of tuberculosis therapeutic failure. This research aimed to find the combination effect of standard antituberculosis drugs with Hibiscus sabdariffa L., Kaempferia galanga L., and Piper crocatum N.E. Br against multi-drug resistant (MDR) Mycobacterium tuberculosis isolates. Two MDR strains (i.e., isoniazid/ethambutol resistant and rifampicin/streptomycin resistant) of M. tuberculosis were inoculated in Löwenstein-Jensen medium containing a combination of standard antituberculosis drugs and ethanolic extracts of H...
March 20, 2017: Scientia Pharmaceutica
https://www.readbyqxmd.com/read/28335542/the-impact-of-bending-stress-on-the-performance-of-giant-magneto-impedance-gmi-magnetic-sensors
#12
Julie Nabias, Aktham Asfour, Jean-Paul Yonnet
The flexibility of amorphous Giant Magneto-Impedance (GMI) micro wires makes them easy to use in several magnetic field sensing applications, such as electrical current sensing, where they need to be deformed in order to be aligned with the measured field. The present paper deals with the bending impact, as a parameter of influence of the sensor, on the GMI effect in 100 µm Co-rich amorphous wires. Changes in the values of key parameters associated with the GMI effect have been investigated under bending stress...
March 20, 2017: Sensors
https://www.readbyqxmd.com/read/28335541/effects-of-forest-therapy-on-depressive-symptoms-among-adults-a-systematic-review
#13
REVIEW
Insook Lee, Heeseung Choi, Kyung-Sook Bang, Sungjae Kim, MinKyung Song, Buhyun Lee
This study systematically reviewed forest therapy programs designed to decrease the level of depression among adults and assessed the methodological rigor and scientific evidence quality of existing research studies to guide future studies. This systematic review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. The authors independently screened full-text articles from various databases using the following criteria: (1) intervention studies assessing the effects of forest therapy on depressive symptoms in adults aged 18 years and older; (2) studies including at least one control group or condition; (3) peer-reviewed studies; and (4) been published either in English or Korean before July 2016...
March 20, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28335540/a-vehicle-steering-recognition-system-based-on-low-cost-smartphone-sensors
#14
Xinhua Liu, Huafeng Mei, Huachang Lu, Hailan Kuang, Xiaolin Ma
Recognizing how a vehicle is steered and then alerting drivers in real time is of utmost importance to the vehicle and driver's safety, since fatal accidents are often caused by dangerous vehicle maneuvers, such as rapid turns, fast lane-changes, etc. Existing solutions using video or in-vehicle sensors have been employed to identify dangerous vehicle maneuvers, but these methods are subject to the effects of the environmental elements or the hardware is very costly. In the mobile computing era, smartphones have become key tools to develop innovative mobile context-aware systems...
March 20, 2017: Sensors
https://www.readbyqxmd.com/read/28335537/an-effective-and-robust-decentralized-target-tracking-scheme-in-wireless-camera-sensor-networks
#15
Pengcheng Fu, Yongbo Cheng, Hongying Tang, Baoqing Li, Jun Pei, Xiaobing Yuan
In this paper, we propose an effective and robust decentralized tracking scheme based on the square root cubature information filter (SRCIF) to balance the energy consumption and tracking accuracy in wireless camera sensor networks (WCNs). More specifically, regarding the characteristics and constraints of camera nodes in WCNs, some special mechanisms are put forward and integrated in this tracking scheme. First, a decentralized tracking approach is adopted so that the tracking can be implemented energy-efficiently and steadily...
March 20, 2017: Sensors
https://www.readbyqxmd.com/read/28335536/doa-estimation-based-on-real-valued-cross-correlation-matrix-of-coprime-arrays
#16
Jianfeng Li, Feng Wang, Defu Jiang
A fast direction of arrival (DOA) estimation method using a real-valued cross-correlation matrix (CCM) of coprime subarrays is proposed. Firstly, real-valued CCM with extended aperture is constructed to obtain the signal subspaces corresponding to the two subarrays. By analysing the relationship between the two subspaces, DOA estimations from the two subarrays are simultaneously obtained with automatic pairing. Finally, unique DOA is determined based on the common results from the two subarrays. Compared to partial spectral search (PSS) method and estimation of signal parameter via rotational invariance (ESPRIT) based method for coprime arrays, the proposed algorithm has lower complexity but achieves better DOA estimation performance and handles more sources...
March 20, 2017: Sensors
https://www.readbyqxmd.com/read/28335534/a-networked-sensor-system-for-the-analysis-of-plot-scale-hydrology
#17
German Villalba, Fernando Plaza, Xiaoyang Zhong, Tyler W Davis, Miguel Navarro, Yimei Li, Thomas A Slater, Yao Liang, Xu Liang
This study presents the latest updates to the Audubon Society of Western Pennsylvania (ASWP) testbed, a $50,000 USD, 104-node outdoor multi-hop wireless sensor network (WSN). The network collects environmental data from over 240 sensors, including the EC-5, MPS-1 and MPS-2 soil moisture and soil water potential sensors and self-made sap flow sensors, across a heterogeneous deployment comprised of MICAz, IRIS and TelosB wireless motes. A low-cost sensor board and software driver was developed for communicating with the analog and digital sensors...
March 20, 2017: Sensors
https://www.readbyqxmd.com/read/28335533/exploring-impacts-of-taxes-and-hospitality-bans-on-cigarette-prices-and-smoking-prevalence-using-a-large-dataset-of-cigarette-prices-at-stores-2001-2011-usa
#18
Lance S Ballester, Amy H Auchincloss, Lucy F Robinson, Stephanie L Mayne
In the USA, little is known about local variation in retail cigarette prices; price variation explained by taxes, bans, and area-level socio-demographics, and whether taxes and hospitality bans have synergistic effects on smoking prevalence. Cigarette prices 2001-2011 from chain supermarkets and drug stores (n = 2973) were linked to state taxes (n = 41), state and county bar/restaurant smoking bans, and census block group socio-demographics. Hierarchical models explored effects of taxes and bans on retail cigarette prices as well as county smoking prevalence (daily, non-daily)...
March 20, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28335529/effects-of-momordica-charantia-bitter-melon-on-ischemic-diabetic-myocardium
#19
Attila Czompa, Alexandra Gyongyosi, Kitti Szoke, Istvan Bak, Evelin Csepanyi, David D Haines, Arpad Tosaki, Istvan Lekli
Objective: A rat model is here used to test a hypothesis that Momordica charantia (Bitter melon (BM)) extract favorably alters processes in cardiovascular tissue and is systemically relevant to the pathophysiology of type 2 diabetes (T2DM) and related cardiovascular disease. Methods: Male Lean and Zucker Obese (ZO) rats were gavage-treated for six weeks with 400 mg/kg body weight bitter melon (BM) extract suspended in mucin-water vehicle, or with vehicle (Control). Animals were segregated into four treatment groups, 10 animals in each group, according to strain (Lean or ZO) and treatment (Control or BM)...
March 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28335527/metabolic-disorder-in-chronic-obstructive-pulmonary-disease-copd-patients-towards-a-personalized-approach-using-marine-drug-derivatives
#20
REVIEW
Palma Lamonaca, Giulia Prinzi, Aliaksei Kisiliaou, Vittorio Cardaci, Massimo Fini, Patrizia Russo
Metabolic disorder has been frequently observed in chronic obstructive pulmonary disease (COPD) patients. However, the exact correlation between obesity, which is a complex metabolic disorder, and COPD remains controversial. The current study summarizes a variety of drugs from marine sources that have anti-obesity effects and proposed potential mechanisms by which lung function can be modulated with the anti-obesity activity. Considering the similar mechanism, such as inflammation, shared between obesity and COPD, the study suggests that marine derivatives that act on the adipose tissues to reduce inflammation may provide beneficial therapeutic effects in COPD subjects with high body mass index (BMI)...
March 20, 2017: Marine Drugs
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