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https://www.readbyqxmd.com/read/28731322/large-scale-stretchable-semi-embedded-copper-nanowires-transparent-conductive-films-by-electrospinning-template
#1
Xia Yang, Xiaotian Hu, Qingxia Wang, Jian Xiong, Hanjun Yang, Xiangchuan Meng, Licheng Tan, Lie Chen, Yiwang Chen
With recent emergence of wearable electronic devices, the flexible and stretchable transparent electrodes are the core components to realize innovative devices. Copper nanowires (CuNWs) network is commonly chosen because of its high conductivity and transparency. However, the junction resistances and low aspect ratios still limit its further stretchable performance. Herein, a large-scale stretchable semi-embedded CuNWs transparent conductive film (TCFs) was fabricated by electrolessly depositing Cu on the electrospun poly (4-vinylpyridine) (P4VP) polymer template semi-embedded in polydimethylsiloxane (PDMS)...
July 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28731092/a-ni-p-nico-ldh-core-shell-nanorod-decorated-nickel-foam-with-enhanced-areal-specific-capacitance-for-high-performance-supercapacitors
#2
Jiale Xing, Jing Du, Xuan Zhang, Yubo Shao, Ting Zhang, Cailing Xu
Recently, transition metal-based nanomaterials have played a key role in the applications of supercapacitors. In this study, nickel phosphide (Ni-P) was simply combined with NiCo LDH via facile phosphorization of Ni foam and subsequent electrodeposition to form core-shell nanorod arrays on the Ni foam; the Ni-P@NiCo LDH was then directly used for a pseudocapacitive electrode. Owing to the splendid synergistic effect between Ni-P and NiCo LDH nanosheets as well as the hierarchical structure of 1D nanorods, 2D nanosheets, and 3D Ni foam, the hybrid electrode exhibited significantly enhanced electrochemical performances...
July 21, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28730680/cervical-stability-training-with-and-without-core-stability-training-for-patients-with-cervical-disc-herniation-a-randomized-single-blind-study
#3
B Buyukturan, A Guclu-Gunduz, O Buyukturan, Y Dadali, S Bilgin, E E Kurt
BACKGROUND: This study aims at evaluating and comparing the effects of cervical stability training to combined cervical and core stability training in patients with neck pain and cervical disc herniation. METHODS: Fifty patients with neck pain and cervical disc herniation were included in the study, randomly divided into two groups as cervical stability and cervical-core stability. Training was applied three times a week in three phases, and lasted for a total duration of 8 weeks...
July 20, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28728980/the-role-of-hexon-protein-as-a-molecular-mold-in-patterning-the-protein-ix-organization-in-human-adenoviruses
#4
Vijay S Reddy
Adenoviruses are respiratory, ocular and enteric pathogens that form complex capsids, which are assembled from seven different structural proteins and composed of several core proteins that closely interact with the packaged dsDNA genome. The recent near-atomic resolution structures revealed that the interlacing continuous hexagonal network formed by the protein IX (IX) molecules is conserved among different human adenoviruses (HAdVs), but not in non-human adenoviruses (non-HAdVs). In this report we propose a distinct role for the hexon protein as a "molecular mold" in enabling the formation of such hexagonal IX-network that has been shown to preserve the stability, infectivity of HAdVs...
July 17, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28725140/formulation-and-pharmacokinetics-of-multi-layered-matrix-tablets-biphasic-delivery-of-diclofenac
#5
Ehab Mostafa Elzayat, Ali Abdelzaher Abdel-Rahman, Sayed Mohamed Ahmed, Fars Kaed Alanazi, Walid Abdulazim Habib, Hisham Suliman Abou-Auda, Adel Sakr
The rapid availability of the drug at the site of action followed by maintaining its effect for a long period of time is of great clinical importance. Thus, the purpose of the present study was to prepare and evaluate multi-layered matrix tablets of diclofenac using Eudragit RL/RS blend to achieve both immediate and sustained therapeutic effects. Diclofenac potassium (25 mg) was incorporated in an outer immediate release layer to provide immediate pain relief whereas diclofenac sodium (75 mg) was incorporated in the inner core to provide extended drug release...
July 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/28724986/core-shell-lipid-polymer-hybrid-nanoparticles-with-combined-docetaxel-and-molecular-targeted-therapy-for-the-treatment-of-metastatic-prostate-cancer
#6
Qi Wang, Heba Alshaker, Torsten Böhler, Shyam Srivats, Yimin Chao, Colin Cooper, Dmitri Pchejetski
Many prostate cancers relapse after initial chemotherapy treatment. Combining molecular and chemotherapy together with encapsulation of drugs in nanocarriers provides effective drug delivery and toxicity reduction. We developed core shell lipid-polymer hybrid nanoparticles (CSLPHNPs) with poly (lactic-co-glycolic acid) (PLGA) core and lipid layer containing docetaxel and clinically used inhibitor of sphingosine kinase 1 (SK1) FTY720 (fingolimod). We show for the first time that FTY720 (both free and in CSLPHNPs) re-sensitizes castrate resistant prostate cancer cells and tumors to docetaxel, allowing a four-fold reduction in effective dose...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28724265/facile-synthesis-of-sio2-c-nanoparticles-anchored-on-mwnt-as-high-performance-anode-materials-for-li-ion-batteries
#7
Yan Zhao, Zhengjun Liu, Yongguang Zhang, Almagul Mentbayeva, Xin Wang, M Yu Maximov, Baoxi Liu, Zhumabay Bakenov, Fuxing Yin
Carbon-coated silica nanoparticles anchored on multi-walled carbon nanotubes (SiO2@C/MWNT composite) were synthesized via a simple and facile sol-gel method followed by heat treatment. Scanning and transmission electron microscopy (SEM and TEM) studies confirmed densely anchoring the carbon-coated SiO2 nanoparticles onto a flexible MWNT conductive network, which facilitated fast electron and lithium-ion transport and improved structural stability of the composite. As prepared, ternary composite anode showed superior cyclability and rate capability compared to a carbon-coated silica counterpart without MWNT (SiO2@C)...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28723086/formation-of-core-shell-ethane-silver-clusters-in-he-droplets
#8
Evgeny Loginov, Luis F Gomez, Boris G Sartakov, Andrey F Vilesov
Ethane core - silver shell clusters consisting of several thousand particles have been assembled in helium droplets upon capture of first ethane molecules, followed by Ag atoms. The composite clusters were studied via infrared laser spectroscopy in the range of C-H stretching vibrations of ethane molecules. The spectra show the splitting of the vibrational bands, which was assigned to different environment of the molecules, such as in contact or devoid of a contact with Ag atoms. The analysis of the band intensities for different number of trapped ethane molecules and Ag atoms indicates that the composite clusters consist of ethane core covered with small Ag clusters having different degree of submergence on the surface...
July 19, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28723072/superposition-principle-in-auger-recombination-of-charged-and-neutral-multicarrier-states-in-semiconductor-quantum-dots
#9
Kaifeng Wu, Jaehoon Lim, Victor I Klimov
Application of colloidal semiconductor quantum dots (QDs) in optical and optoelectronic devices is often complicated by unintentional generation of extra charges, which opens fast nonradiative Auger recombination pathways whereby the recombination energy of an exciton is quickly transferred to the extra-carrier(s) and ultimately dissipated as heat. Previous studies of Auger recombination have primarily focused on neutral, and more recently, negatively charged multi-carrier states. Auger dynamics of positively charged species remains more poorly explored due to difficulties in creating, stabilizing, and detecting excess holes in the QDs...
July 19, 2017: ACS Nano
https://www.readbyqxmd.com/read/28723067/structural-and-spectroscopic-properties-of-assemblies-of-self-replicating-peptide-macrocycles
#10
Pim W J M Frederix, Julien Idé, Yigit Altay, Gaël Schaeffer, Mathieu Surin, David Beljonne, Anna S Bondarenko, Thomas L C Jansen, Sijbren Otto, Siewert J Marrink
Self-replication at the molecular level is often seen as essential to the early origins of life. Recently a mechanism of self-replication has been discovered in which replicator self-assembly drives the process. We have studied one of the examples of such self-assembling self-replicating molecules to a high level of structural detail using a combination of computational and spectroscopic techniques. Molecular Dynamics simulations of self-assembled stacks of peptide-derived replicators provide insights into the structural characteristics of the system and serve as the basis for semiempirical calculations of the UV-vis, circular dichroism (CD) and infrared (IR) absorption spectra that reflect the chiral organization and peptide secondary structure of the stacks...
July 21, 2017: ACS Nano
https://www.readbyqxmd.com/read/28722825/crystalline-%C3%AF-stack-containing-five-stereoisomers-insights-into-conformational-isomorphism-chirality-inversion-and-disorder
#11
Agnieszka Nowak-Krol, Merle Röhr, David Schmidt, Frank Würthner
An unprecedented crystal packing arrangement of a tetramethoxy-bay-substituted perylene bisimide (PBI) consists of three crystallographically independent molecules, i.e. an achiral (AC) PBI of saddle-shaped geometry along with two pairs of propeller-like twisted (P) and (M)enantiomeric PBI frameworks. All these five conformations are observed within a single π-stack revealing an intriguing packing sequence with an inversion of chirality from P to M via AC. Nudged elastic band calculations for the isolated molecule show that AC is a local minimum of the P to M interconversion path...
July 19, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28720904/interaction-between-trait-and-housing-condition-produces-differential-decision-making-toward-risk-choice-in-a-rat-gambling-task
#12
Wha Young Kim, Bo Ram Cho, Myung Ji Kwak, Jeong-Hoon Kim
Poor decision-making is a core problem in psychiatric disorders such as pathological gambling and substance abuse. Both trait and environmental factors are considerably important to affect decision-making. However, it has not yet been systematically shown how they interact to affect risk preference in animal models evaluating decision-making. Here, we trained rats, housed in pairs or in isolation, in a touch screen chamber to detect the association between four different light signals on the screen and accompanied reward and punishment outcomes arranged with different schedules...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28718975/pyrene-mo-shuffle-controlling-excited-state-and-redox-properties-by-changing-the-nature-of-the-frontier-orbitals
#13
Julia Merz, Julian Fink, Alexandra Friedrich, Ivo Krummenacher, Hamad Al Mamari, Sabine Lorenzen, Martin Hähnel, Antonius Eichhorn, Michael Moos, Marco Holzapfel, Holger Braunschweig, Christoph Lambert, Andreas Steffen, Lei Ji, Todd B Marder
We show that by judicious choice of substituents at the 2,7-positions of pyrene, the frontier orbital order of pyrene can be modified, giving enhanced control over the nature and properties of the photoexcited states and the redox potentials. Specifically, we introduced a julolidine-like moiety and Bmes2 (mes = 2,4,6-Me3C6H2) as very strong donor (D) and acceptor (A), respectively, giving 2,7-D-π-D- and unsymmetric 2,7-D-π-A-pyrene derivatives, in which the donor destabilizes the HOMO-1 and the acceptor stabilizes the LUMO+1 of the pyrene core...
July 18, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28718290/enhanced-long-term-and-thermal-stability-of-polymer-solar-cells-in-air-at-high-humidity-with-the-formation-of-unusual-quantum-dot-networks
#14
Long Tan, Fan Yang, Mee Rahn Kim, Pandeng Li, Deepak Thrithamarassery Gangadharan, Joelle Margot, Ricardo Izquierdo, Mohamed Chaker, Dongling Ma
Due to the practical applications of polymer solar cells (PSCs), their stability recently has received increasing attention. Herein, a new strategy was developed to largely enhance the long-term and thermal stability of PSCs in air with a relatively high humidity of 50-60% without any encapsulation. In this strategy, semiconductor PbS/CdS core/shell quantum dots (QDs) were incorporated into the photoactive blend of poly(3-hexylthiophene) (P3HT) and phenyl-C61-butyric acid methyl ester (PCBM). By replacing the initial ligands of oleic acid with halide ligands on the surface of PbS/CdS QDs via solution-phase-ligand-exchange, we were able to form unusual, continuous QD networks in the film of P3HT:PCBM, which effectively stabilized the photoactive layer...
July 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28717195/stability-of-the-phf10-subunit-of-pbaf-signature-module-is-regulated-by-phosphorylation-role-of-%C3%AE-trcp
#15
Victor V Tatarskiy, Yuriy P Simonov, Dmitrii S Shcherbinin, Alexander V Brechalov, Sofia G Georgieva, Nataliya V Soshnikova
The PBAF chromatin-remodeling complexes are multi-protein machines, regulating expression of genes involved in proliferation and differentiation. PHF10 is a subunit of the PBAF essential for its association with chromatin. Mammalian PHF10 is expressed as four ubiquitous isoforms, which are alternatively incorporated in the complex and differ by their influence on transcription of target genes. PHF10 have different domain structure and two of them (PHF10-S isoforms) lack C-terminal PHD domains, which enables their phosphorylation by CK-1...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28717046/from-structure-to-mechanism-understanding-initiation-of-dna-replication
#16
REVIEW
Alberto Riera, Marta Barbon, Yasunori Noguchi, L Maximilian Reuter, Sarah Schneider, Christian Speck
DNA replication results in the doubling of the genome prior to cell division. This process requires the assembly of 50 or more protein factors into a replication fork. Here, we review recent structural and biochemical insights that start to explain how specific proteins recognize DNA replication origins, load the replicative helicase on DNA, unwind DNA, synthesize new DNA strands, and reassemble chromatin. We focus on the minichromosome maintenance (MCM2-7) proteins, which form the core of the eukaryotic replication fork, as this complex undergoes major structural rearrangements in order to engage with DNA, regulate its DNA-unwinding activity, and maintain genome stability...
June 1, 2017: Genes & Development
https://www.readbyqxmd.com/read/28717002/human-ribonuclease-h1-resolves-r-loops-and-thereby-enables-progression-of-the-dna-replication-fork
#17
Shankar Parajuli, Daniel C Tealsey, Bhavna Murali, Jessica Jackson, Alessandro Vindigni, Sheila A Stewart
Faithful DNA replication is essential for genome stability. To ensure accurate replication, numerous complex and redundant replication and repair mechanisms function in tandem with the core replication proteins to ensure DNA replication continues even when replication challenges are present that could impede progression of the replication fork. A unique topological challenge to the replication machinery is posed by RNA:DNA hybrids, commonly referred to as R-loops. While R-loops play important roles in gene expression and recombination at immunoglobulin sites, their persistence is thought to interfere with DNA replication by slowing or impeding replication fork progression...
July 17, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28715219/synthesis-of-aromatic-thiolate-protected-gold-nanomolecules-by-core-conversion-the-case-of-au36-sph-tbu-24
#18
Shevanuja Theivendran, Amala Dass
Ultrasmall nanomolecules (<2 nm) such as Au25(SCH2CH2Ph)18, Au38(SCH2CH2Ph)24, and Au144(SCH2CH2Ph)60 are well studied and can be prepared using established synthetic procedures. No such synthetic protocols that result in high yield products from commercially available starting materials exist for Au36(SPh-X)24. Here, we report a synthetic procedure for the large-scale synthesis of highly stable Au36(SPh-X)24 with a yield of ∼42%. Au36(SPh-X)24 was conveniently synthesized by using tert-butylbenzenethiol (HSPh-tBu, TBBT) as the ligand, giving a more stable product with better shelf life and higher yield than previously reported for making Au36(SPh)24 from thiophenol (PhSH)...
July 17, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28714764/abdominal-hollowing-reduces-lateral-trunk-displacement-during-single-leg-squats-in-healthy-females-but-does-not-affect-peak-hip-abduction-angle-or-knee-abductio-angle-moment
#19
Lukas D Linde, Jessica Archibald, Eve C Lampert, John Z Srbely
CONTEXT: Females suffer 4-6 times more non-contact anterior cruciate ligament (ACL) injuries than males due to neuromuscular control deficits of the hip musculature leading to increases in hip adduction angle, knee abduction angle, and knee abduction moment during dynamic tasks such as single-leg squats. Lateral trunk displacement has been further related to ACL injury risk in females, leading to the incorporation of core strength/stability exercises in ACL preventative training programs...
July 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28713484/moderate-autophagy-inhibits-vascular-smooth-muscle-cell-senescence-to-stabilize-progressed-atherosclerotic-plaque-via-the-mtorc1-ulk1-atg13-signal-pathway
#20
Zhenli Luo, Wenhuan Xu, Sai Ma, Hongyu Qiao, Lei Gao, Ran Zhang, Bo Yang, Ya Qiu, Jiangwei Chen, Ming Zhang, Bo Tao, Feng Cao, Yabin Wang
In order to investigate the effects of autophagy induced by rapamycin in the development of atherosclerosis plaque we established murine atherosclerosis model which was induced in ApoE(-/-) mice by high fat and cholesterol diet (HFD) for 16 weeks. Rapamycin and 3-Methyladenine (MA) were used as autophagy inducer and inhibitor respectively. The plaque areas in aortic artery were detected with HE and Oil Red O staining. Immunohistochemical staining were applied to investigate content of plaque respectively. In contrast to control and 3-MA groups, rapamycin could inhibit atherosclerosis progression...
2017: Oxidative Medicine and Cellular Longevity
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