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https://www.readbyqxmd.com/read/28643362/-super-reducing-photocatalysis-consecutive-energy-and-electron-transfers-with-polycyclic-aromatic-hydrocarbons
#1
Malte Brasholz
Donation welcome: Recent developments in visible-light photocatalysis allow the utilization of increasingly negative reduction potentials. Successive energy and electron transfer with polycyclic aromatic hydrocarbons enables the catalytic formation of strongly reducing arene radical anions, classical stoichiometric reagents for one-electron reduction in organic synthesis.
June 23, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28617338/indoor-autonomous-control-of-a-two-wheeled-inverted-pendulum-vehicle-using-ultra-wide-band-technology
#2
Dunzhu Xia, Yanhong Yao, Limei Cheng
In this paper, we aimed to achieve the indoor tracking control of a two-wheeled inverted pendulum (TWIP) vehicle. The attitude data are acquired from a low cost micro inertial measurement unit (IMU), and the ultra-wideband (UWB) technology is utilized to obtain an accurate estimation of the TWIP's position. We propose a dual-loop control method to realize the simultaneous balance and trajectory tracking control for the TWIP vehicle. A robust adaptive second-order sliding mode control (2-RASMC) method based on an improved super-twisting (STW) algorithm is investigated to obtain the control laws, followed by several simulations to verify its robustness...
June 15, 2017: Sensors
https://www.readbyqxmd.com/read/28607348/construction-of-sno2-graphene-composite-with-half-supported-cluster-structure-as-anode-toward-superior-lithium-storage-properties
#3
Chengling Zhu, Zhixin Chen, Shenmin Zhu, Yao Li, Hui Pan, Xin Meng, Muhammad Imtiaz, Di Zhang
Inspired by nature, herein we designed a novel construction of SnO2 anodes with an extremely high lithium storage performance. By utilizing small sheets of graphene oxide, the partitioned-pomegranate-like structure was constructed (SnO2@C@half-rGO), in which the porous clusters of SnO2 nanoparticles are partially supported by reduced graphene oxide sheets while the rest part is exposed (half-supported), like partitioned pomegranates. When served as anode for lithium-ion batteries, SnO2@C@half-rGO exhibited considerably high specific capacity (1034...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28582966/polarization-dependent-quasi-far-field-superfocusing-strategy-of-nanoring-based-plasmonic-lenses
#4
Hao Sun, Yechuan Zhu, Bo Gao, Ping Wang, Yiting Yu
The two-dimensional superfocusing of nanoring-based plasmonic lenses (NRPLs) beyond the diffraction limit in the far-field region remains a great challenge at optical wavelengths. In this paper, in addition to the modulation of structural parameters, we investigated the polarization-dependent focusing performance of a NRPL employing the finite-difference time-domain (FDTD) method. By utilizing the state of polarization (SOP) of incident light, we successfully realize the elliptical-, donut-, and circular-shape foci...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28579665/foxp3-stained-image-analysis-for-follicular-lymphoma-optimal-adaptive-thresholding-with-maximal-nucleus-coverage
#5
C Senaras, M Pennell, W Chen, B Sahiner, A Shana'ah, A Louissaint, R P Hasserjian, G Lozanski, M N Gurcan
Immunohistochemical detection of FOXP3 antigen is a usable marker for detection of regulatory T lymphocytes (TR) in formalin fixed and paraffin embedded sections of different types of tumor tissue. TR plays a major role in homeostasis of normal immune systems where they prevent auto reactivity of the immune system towards the host. This beneficial effect of TR is frequently "hijacked" by malignant cells where tumor-infiltrating regulatory T cells are recruited by the malignant nuclei to inhibit the beneficial immune response of the host against the tumor cells...
February 11, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28578351/protective-effects-of-microrna-126-on-human-cardiac-microvascular-endothelial-cells-against-hypoxia-reoxygenation-induced-injury-and-inflammatory-response-by-activating-pi3k-akt-enos-signaling-pathway
#6
Hong-Hui Yang, Yan Chen, Chuan-Yu Gao, Zhen-Tian Cui, Jian-Min Yao
OBJECTIVE: This study explored the protective effects of the microRNA-126 (miR-126)-mediated PI3K/Akt/eNOS signaling pathway on human cardiac microvascular endothelial cells (HCMECs) against hypoxia/reoxygenation (H/R)-induced injury and the inflammatory response. METHODS: Untreated HCMECs were selected for the control group. After H/R treatment and cell transfection, the HCMECs were assigned to the H/R, miR-126 mimic, mimic-negative control (NC), miR-126 inhibitor, inhibitor-NC, wortmannin (an inhibitor of PI3K) and miR-126 mimic + wortmannin groups...
June 5, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28578285/bioinspired-catecholic-activation-of-marine-chitin-for-immobilization-of-ag-nanoparticles-as-recyclable-pollutant-nanocatalysts
#7
Yanwei Wang, Qingshan Kong, Beibei Ding, Yijun Chen, Xiaofei Yan, Shiwei Wang, Fushan Chen, Jun You, Chaoxu Li
Being one type of the most abundant marine polysaccharides in nature, chitin has inert chemical properties and thus prolonged been hindered for high-value utilization. A mussel-inspired catecholic chemistry was found to be able to confer nature-derived mesoporous chitin aerogels with high and tunable surface activities. When further combining with their high porosity, high specific surface area, mechanical toughness and unique nanofibrous architecture, these catechol-activated chitin aerogels could be used as a unique supporting matrix to immobilize Ag nanoparticles...
May 26, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28571383/an-empirical-correction-for-moderate-multiple-scattering-in-super-heterodyne-light-scattering
#8
Denis Botin, Ludmila Marotta Mapa, Holger Schweinfurth, Bastian Sieber, Christopher Wittenberg, Thomas Palberg
Frequency domain super-heterodyne laser light scattering is utilized in a low angle integral measurement configuration to determine flow and diffusion in charged sphere suspensions showing moderate to strong multiple scattering. We introduce an empirical correction to subtract the multiple scattering background and isolate the singly scattered light. We demonstrate the excellent feasibility of this simple approach for turbid suspensions of transmittance T ≥ 0.4. We study the particle concentration dependence of the electro-kinetic mobility in low salt aqueous suspension over an extended concentration regime and observe a maximum at intermediate concentrations...
May 28, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28567167/nurse-competence-on-physiologic-monitors-use-toward-eliminating-alarm-fatigue-in-intensive-care-units
#9
Azizeh K Sowan, Ana G Vera, Elma I Fonseca, Charles C Reed, Albert F Tarriela, Andrea E Berndt
BACKGROUND: Studies on nurse competence on alarm management are a few and tend to be focused on limited skills. In response to Phase II of implementing the National Patient Safety Goal on clinical alarm systems safety, this study assessed nurses' perceived competence on physiologic monitors use in intensive care units (ICUs) and developed and validated a tool for this purpose. METHODS: This descriptive study took place in a Magnet hospital in a Southwestern state of the U...
2017: Open Medical Informatics Journal
https://www.readbyqxmd.com/read/28546888/vapor-phase-synthesized-fluoroacrylate-polymer-thin-films-thermal-stability-and-structural-properties
#10
Paul Christian, Anna Maria Coclite
In this study, the thermal, chemical and structural stability of 1H,1H,2H,2H-perfluorodecyl acrylate polymers (p-PFDA) synthetized by initiated chemical vapor deposition (iCVD) were investigated. PFDA polymers are known for their interesting crystalline aggregation into a lamellar structure that induces super-hydrophobicity and oleophobicity. Nevertheless, when considering applications which involve chemical, mechanical and thermal stresses, it is important to know the limits under which the crystalline aggregation and the resulting polymer properties are stable...
2017: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/28545049/first-cloned-bactrian-camel-camelus-bactrianus-calf-produced-by-interspecies-somatic-cell-nuclear-transfer-a-step-towards-preserving-the-critically-endangered-wild-bactrian-camels
#11
Nisar Ahmad Wani, Binoy S Vettical, Seung B Hong
Studies were conducted to explore the possibility of employing dromedary camel (Camelus dromedarius) oocytes as recipient cytoplasts for the development of interspecies somatic cell nuclear transfer (iSCNT) embryos using skin fibroblast cells of an adult Bactrian camel (Camelus bactrianus) and Llama (Llama glama) as donor nuclei. Also, the embryos reconstructed with Bactrian cells were transferred into the uterus of synchronized dromedary camel recipients to explore the possibility of using them as surrogate mothers...
2017: PloS One
https://www.readbyqxmd.com/read/28534910/synergy-of-the-mechanical-antifouling-and-permeation-properties-of-a-carbon-nanotube-nanohybrid-membrane-for-efficient-oil-water-separation
#12
Yanan Liu, Yanlei Su, Jialin Cao, Jingyuan Guan, Linyan Xu, Rannan Zhang, Mingrui He, Qi Zhang, Lin Fan, Zhongyi Jiang
For water treatment applications, fabricating a high permeation flux membrane with super-strong mechanical strength and excellent long-term antifouling properties remains a great challenge. In this study, robust, antifouling carbon nanotube (CNT) nanohybrid membranes have been fabricated for oil/water separation. Polyethyleneimine (PEI) with abundant amino groups and a hyperbranched structure is utilized to construct a nanocoating on a CNT surface to enhance their hydrophilicity through multiple interactions between PEI and CNTs...
June 8, 2017: Nanoscale
https://www.readbyqxmd.com/read/28523132/uniportal-transcervical-video-assisted-thoracoscopic-surgery-vats-approach-for-pulmonary-lobectomy-combined-with-transcervical-extended-mediastinal-lymphadenectomy-temla
#13
Marcin Zieliński, Mariusz Rybak, Katarzyna Solarczyk-Bombik, Michal Wilkojc, Wojciech Czajkowski, Sylweriusz Kosinski, Edward Fryzlewicz, Tomasz Nabialek, Juliusz Pankowski
BACKGROUND: To present the technique of uniportal transcervical video-assisted thoracoscopic surgery (VATS) approach for pulmonary lobectomy combined with transcervical extended mediastinal lymphadenectomy (TEMLA). METHODS: Transcervical extended approach utilizes a typical a 5-8 centimeters collar incision in the neck. The critical technical point enabling a wide access to the chest is an elevation of the sternal manubrium with a special retractor (modified Rochard frame, Asculap-Chifa Company)...
April 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28508624/temperature-treatment-of-highly-porous-zirconium-containing-metal-organic-frameworks-extends-drug-delivery-release
#14
Michelle H Teplensky, Marcus Fantham, Peng Li, Timothy C Wang, Joshua P Mehta, Laurence J Young, Peyman Z Moghadam, Joseph T Hupp, Omar K Farha, Clemens F Kaminski, David Fairen-Jimenez
Utilizing metal-organic frameworks (MOFs) as a biological carrier can lower the amount of the active pharmaceutical ingredient (API) required in cancer treatments to provide a more efficacious therapy. In this work, we have developed a temperature treatment process for delaying the release of a model drug compound from the pores of NU-1000 and NU-901, while taking care to utilize these MOFs' large pore volume and size to achieve exceptional model drug loading percentages over 35 wt %. Video-rate super-resolution microscopy reveals movement of MOF particles when located outside of the cell boundary, and their subsequent immobilization when taken up by the cell...
June 7, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28507662/fabrication-and-nanostructure-control-of-super-hierarchical-carbon-materials-from-heterogeneous-bottlebrushes
#15
Yeru Liang, Luyi Chen, Dongyang Zhuang, Hao Liu, Ruowen Fu, Mingqiu Zhang, Dingcai Wu, Krzysztof Matyjaszewski
Advances in the performances of many modern materials fundamentally depend upon the exploitation of new micro/nanostructures. Therefore, ingenious design of hierarchical structures through the mimicking of natural systems is of increasing importance. Currently, there is an urgent need for creation of multidimensional carbonaceous structures by integrating a customized hierarchical pore architecture and hybrid carbon framework. Here we report the pioneering fabrication of novel super-hierarchical carbons with a unique carbonaceous hybrid nanotube-interconnected porous network structure by utilizing well-defined carbon nanotube@polystyrene bottlebrushes as building blocks...
March 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/28499798/pilot-trial-on-separation-conditions-for-diaper-recycling
#16
Kyung-Shin Kim, Hee-Sun Cho
By utilizing laboratory-scale tests, the optimal separation conditions for diaper recycling were identified, and then, these conditions were validated by a pilot trial. In this research, we determined the mass balances derived during various processing steps and identified the most feasible procedures to use for separating each material in the output flow. The results showed that drum screening was not able to remove all the fiber and super absorbent particles (SAP) in the plastic-rich fraction and that cellulose enzyme treatment can be a good solution...
May 9, 2017: Waste Management
https://www.readbyqxmd.com/read/28485713/super-resolution-imaging-of-a-2-5-kb-non-repetitive-dna-in-situ-in-the-nuclear-genome-using-molecular-beacon-probes
#17
Yanxiang Ni, Bo Cao, Tszshan Ma, Gang Niu, Yingdong Huo, Jiandong Huang, Danni Chen, Yi Liu, Bin Yu, Michael Q Zhang, Hanben Niu
High-resolution visualization of short non-repetitive DNA in situ in the nuclear genome is essential for studying looping interactions and chromatin organization in single cells. Recent advances in fluorescence in situ hybridization (FISH) using Oligopaint probes have enabled super-resolution imaging of genomic domains with a resolution limit of 4.9 kb. To target shorter elements, we developed a simple FISH method that uses molecular beacon (MB) probes to facilitate the probe-target binding, while minimizing non-specific fluorescence...
May 9, 2017: ELife
https://www.readbyqxmd.com/read/28482247/a-possible-biomarker-for-methadone-related-deaths
#18
Antonina Argo, Gianfranco Francesco Spatola, Stefania Zerbo, Cettina Sortino, Antonietta Lanzarone, Maria Laura Uzzo, Alessandro Pitruzzella, Fiorenza Farè, Gabriella Roda, Veniero Gambaro, Paolo Procaccianti, Steven B Karch
Methadone (MTH) concentrations in those dying of MTH toxicity totally overlap concentrations where the presence of MTH is only an incidental finding, making it very difficult to make distinctions in actual cases. A biomarker, be it anatomical or biochemical for MTH toxicity is badly needed, particularly if that markers were known to disrupt effective ventilation. Because the brainstem houses the regulatory centers for cardiorespiratory-control enters, it would seem to be the most likely anatomical site to seek abnormalities in cardiorespiratory control...
July 2017: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/28468313/a-novel-certificateless-signature-scheme-for-smart-objects-in-the-internet-of-things
#19
Kuo-Hui Yeh, Chunhua Su, Kim-Kwang Raymond Choo, Wayne Chiu
Rapid advances in wireless communications and pervasive computing technologies have resulted in increasing interest and popularity of Internet-of-Things (IoT) architecture, ubiquitously providing intelligence and convenience to our daily life. In IoT-based network environments, smart objects are embedded everywhere as ubiquitous things connected in a pervasive manner. Ensuring security for interactions between these smart things is significantly more important, and a topic of ongoing interest. In this paper, we present a certificateless signature scheme for smart objects in IoT-based pervasive computing environments...
May 1, 2017: Sensors
https://www.readbyqxmd.com/read/28465580/controllable-design-of-super-oscillatory-lenses-with-multiple-sub-diffraction-limit-foci
#20
Muyuan Li, Wenli Li, Haoyong Li, Yechuan Zhu, Yiting Yu
The conventional multifocal optical elements cannot precisely control the focal number, spot size, as well as the energy distribution in between. Here, the binary amplitude-type super-oscillatory lens (SOL) is utilized, and a robust and universal optimization method based on the vectorial angular spectrum (VAS) theory and the genetic algorithm (GA) is proposed, aiming to achieve the required focusing performance with arbitrary number of foci in preset energy distribution. Several typical designs of multifocal SOLs are demonstrated...
May 2, 2017: Scientific Reports
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