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https://www.readbyqxmd.com/read/27922204/encapsulation-of-bimetallic-metal-nanoparticles-into-robust-zr-based-metal-organic-frameworks-evaluation-of-the-catalytic-potential-for-size-selective-hydrogenation
#1
Christoph Rösler, Stefano Dissegna, Victor Lopez Rechac, Max Kauer, Penghu Guo, Stuart Turner, Kevin Ollegott, Hirokazu Kobayashi, Tomokazu Yamamoto, Daniel Peeters, Yuemin Wang, Syo Matsumura, Gustaaf Van Tendeloo, Hiroshi Kitagawa, Martin Muhler, Francesc X Llabrés I Xamena, Roland A Fischer
The realization of metal NPs with bimetallic character and distinct composition for specific catalytic applications is an intensively studied field. Due to the synergy between metals, most of the bimetallic particles exhibit unique properties, only hardly provided by the individual monometallic counterparts. However, as small sized NPs possess high surface energy, agglomeration during catalytic reactions is favored. Sufficient stabilization can be achieved by confinement of NPs in porous support materials. In this sense, especially MOFs gained a lot of attention during the last years, however, encapsulation of bimetallic species remains challenging...
December 6, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27921157/assessment-of-pisotriquetral-misalignment-with-magnetic-resonance-imaging-is-it-associated-with-trauma
#2
Hee-Dong Chae, Hye Jin Yoo, Sung Hwan Hong, Ja-Young Choi, Heung Sik Kang
OBJECTIVE: Our objective was to determine whether there is an association between pisotriquetral (PT) malalignment and acute distal radius fracture by using magnetic resonance imaging (MRI). METHODS: We evaluated 138 patients who underwent 3-T MRI of the wrists. Group A comprised 85 patients with acute distal radius fracture, and group B comprised 53 patients without trauma. PT interval and angle and pisiform excursion were measured on oblique axial and sagittal multiplanar reformats...
December 5, 2016: European Radiology
https://www.readbyqxmd.com/read/27920903/toward-clean-suspended-cvd-graphene
#3
Alexander Yulaev, Guangjun Cheng, Angela R Hight Walker, Ivan V Vlassiouk, Alline Myers, Marina S Leite, Andrei Kolmakov
The application of suspended graphene as electron transparent supporting media in electron microscopy, vacuum electronics, and micromechanical devices requires the least destructive and maximally clean transfer from their original growth substrate to the target of interest. Here, we use thermally evaporated anthracene films as the sacrificial layer for graphene transfer onto an arbitrary substrate. We show that clean suspended graphene can be achieved via desorbing the anthracene layer at temperatures in the 100 °C to 150 °C range, followed by two sequential annealing steps for the final cleaning, using Pt catalyst and activated carbon...
2016: RSC Advances
https://www.readbyqxmd.com/read/27919673/proximal-tibial-anterior-open-wedge-oblique-osteotomy-a-novel-technique-to-correct-genu-recurvatum
#4
Tae Woo Kim, Sahnghoon Lee, Jung-Ro Yoon, Hyuk-Soo Han, Myung Chul Lee
BACKGROUND: For successful acute correction of genu recurvatum, accurate correction of plateau angle, restoration of anatomical axis, rigid fixation, and preservation of patellar height are essential. However, a surgical treatment that satisfies all these conditions has not yet been established. The purpose of this study was to evaluate the novel technique of proximal tibial anterior open-wedge oblique osteotomy (PT-AOWOO) for the treatment of genu recurvatum. METHODS: Five patients with genu recurvatum underwent PT-AOWOO from 2008 to 2013...
December 2, 2016: Knee
https://www.readbyqxmd.com/read/27918567/topologically-protected-bound-states-in-photonic-parity-time-symmetric-crystals
#5
S Weimann, M Kremer, Y Plotnik, Y Lumer, S Nolte, K G Makris, M Segev, M C Rechtsman, A Szameit
Parity-time (PT)-symmetric crystals are a class of non-Hermitian systems that allow, for example, the existence of modes with real propagation constants, for self-orthogonality of propagating modes, and for uni-directional invisibility at defects. Photonic PT-symmetric systems that also support topological states could be useful for shaping and routing light waves. However, it is currently debated whether topological interface states can exist at all in PT-symmetric systems. Here, we show theoretically and demonstrate experimentally the existence of such states: states that are localized at the interface between two topologically distinct PT-symmetric photonic lattices...
December 5, 2016: Nature Materials
https://www.readbyqxmd.com/read/27918477/identification-and-characterisation-of-the-antimicrobial-peptide-phylloseptin-pt-from-the-skin-secretion-of-phyllomedusa-tarsius-and-comparison-of-activity-with-designed-cationicity-enhanced-analogues-and-diastereomers
#6
Yitian Gao, Di Wu, Xinping Xi, Yue Wu, Chengbang Ma, Mei Zhou, Lei Wang, Mu Yang, Tianbao Chen, Chris Shaw
Antimicrobial peptides belonging to the phylloseptin family are mainly found in phyllomedusine frogs. These peptides not only possess potent antimicrobial activity but exhibit low toxicity against eukaryotic cells. Therefore, they are considered as promising drug candidates for a number of diseases. In a recent study, potent antimicrobial activity was correlated with the conserved structures and cationic amphiphilic characteristics of members of this peptide family. A phylloseptin peptide precursor was discovered here in the skin secretion of Phyllomedusa tarsius and the mature peptide was validated by MS/MS sequencing, and was subsequently named phylloseptin-PT...
December 3, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27918458/new-electrochemically-modified-carbon-paste-inclusion-%C3%AE-cyclodextrin-and-carbon-nanotubes-sensors-for-quantification-of-dorzolamide-hydrochloride
#7
Nawal Ahmad Alarfaj, Maha Farouk El-Tohamy
The present article introduces a new approach to fabricate carbon paste sensors, including carbon paste, modified carbon paste inclusion β-cyclodextrin, and carbon nanotubes for the quantification of dorzolamide hydrochloride (DRZ). This study is mainly based on the construction of three different carbon paste sensors by the incorporation of DRZ with phosphotungstic acid (PTA) to form dorzolamide-phosphotungstate (DRZ-PT) as an electroactive material in the presence of the solvent mediator ortho-nitrophenyloctyl ether (o-NPOE)...
December 2, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27918050/self-assembled-pt2l2-boxes-strongly-bind-g-quadruplex-dna-and-influence-gene-expression-in-cancer-cells
#8
O Domarco, D Lötsch, J Schreiber, C Dinhof, S Van Schoonhoven, M D García, C Peinador, B K Keppler, W Berger, A Terenzi
Supramolecular Pt(ii) quadrangular boxes bind native and G-quadruplex DNA motifs in a size-dependent fashion. Three Pt molecular squares of distinct size show biological activity against cancer cells and heavily influence the expression of genes known to form G-quadruplexes in their promoter regions. The smallest Pt-box displays less activity but more selectivity for a quadruplex formed in the c-Kit gene.
December 5, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27917942/chemical-imaging-of-platinum-based-drugs-and-their-metabolites
#9
Xin Liu, Amanda B Hummon
Platinum-based drugs (cisplatin, carboplatin, and oxaliplatin) are widely used therapeutic agents for cancer treatment. Even though the platinum (Pt)-drugs are routinely used clinically, a clear picture of their distribution within tumor tissues is lacking. The current methods to image the distribution of Pt drugs are limited and do not enable the discrimination of the drug from its metabolites. In this manuscript, we demonstrate a methodology that enables chemical imaging of a Pt drug and its metabolites simultaneously and specifically...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27917838/overcoming-a-hemihedral-twinning-problem-in-tetrahydrofolate-dependent-o-demethylase-crystals-by-the-microseeding-method
#10
Ayaka Harada, Yukari Sato, Naofumi Kamimura, Nagarajan Venugopalan, Eiji Masai, Toshiya Senda
A tetrahydrofolate-dependent O-demethylase, LigM, from Sphingobium sp. SYK-6 was crystallized by the hanging-drop vapour-diffusion method. However, the obtained P3121 or P3221 crystals, which diffracted to 2.5-3.3 Å resolution, were hemihedrally twinned. To overcome the twinning problem, microseeding using P3121/P3221 crystals as microseeds was performed with optimization of the reservoir conditions. As a result, another crystal form was obtained. The newly obtained crystal diffracted to 2.5-3.0 Å resolution and belonged to space group P21212, with unit-cell parameters a = 102...
December 1, 2016: Acta Crystallographica. Section F, Structural Biology Communications
https://www.readbyqxmd.com/read/27917720/ultrasound-promoted-synthesis-and-anticoagulant-activity-of-2-amino-4h-chromen-4-ylphosphonates
#11
Sarva Santhisudha, Tellamekala Sreekanth, Sudileti Murali, Bathal Vijaya Kumar, Meruva Anila Devi, Cirandur Suresh Reddy
BACKGROUND: One of the alarming difficulties in the field of hematology is the Coagulant disorders. Despite the availability of clinically proven existing anticoagulants, their limitations have prompted a continuous search for novel anticoagulants. OBJECTIVE: The primary objective of the study is to synthesize a series of 2-amino-4H-chromen-4-ylphosphonate derivatives and to test their anticoagulant activity depending on PT measurements con-sidering commercial heparin as positive control...
December 4, 2016: Cardiovascular & Hematological Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/27917701/design-synthesis-mtt-assay-dna-interaction-studies-of-platinum-ii-complexes
#12
Miral V Lunagariya, Khyati P Thakor, Bhargav N Waghela, Foram U Vaidya, Chadramani Pathak, Mohan N Patel
The square planar Pt(II) complexes of the type [Pt(L(n))(Cl2)] (where L(n) = L(1-3) = thiophene-2-carboxamide derivatives and L(4-6) = thiophene-2-carbothioamide derivatives) have been synthesized and characterized by physicochemical and various spectroscopic studies. MIC method was employed to inference the antibacterial potency of complexes in reference to free ligands and metal salt. Characteristic binding constant (Kb) and binding mode of complexes with calf thymus DNA (CT-DNA) were determined using absorption titration (0...
December 4, 2016: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/27917460/moderators-of-parent-training-for-disruptive-behaviors-in-young-children-with-autism-spectrum-disorder
#13
Luc Lecavalier, Tristram Smith, Cynthia Johnson, Karen Bearss, Naomi Swiezy, Michael G Aman, Denis G Sukhodolsky, Yanhong Deng, James Dziura, Lawrence Scahill
We conducted a 6 month, randomized trial of parent training (PT) versus a parent education program (PEP) in 180 young children (158 boys, 22 girls), ages 3-7 years, with autism spectrum disorder (ASD). PT was superior to PEP in decreasing disruptive and noncompliant behaviors. In the current study, we assess moderators of treatment response in this trial. Thirteen clinical and demographic variables were evaluated as potential moderators of three outcome variables: the Aberrant Behavior Checklist-Irritability subscale (ABC-I), Home Situations Questionnaire (HSQ), and Clinical Global Impressions-Improvement Scale (CGI-I)...
December 5, 2016: Journal of Abnormal Child Psychology
https://www.readbyqxmd.com/read/27917422/-3-2-annulation-of-platinum-bound-azomethine-ylides-with-distal-c-double-bond-length-as-m-dash-c-bonds-of-n-allenamides
#14
Indradweep Chakrabarty, Suleman M Inamdar, Manjur O Akram, Amol B Gade, Subhrashis Banerjee, Saibal Bera, Nitin T Patil
A Pt-catalyzed, highly regioselective reaction between N-allenamides and imino-alkynes leading to pyrrolo[1,2-a]indoles is described. This represents the first example of [3+2]-annulation of Pt-bound azomethine ylides with the distal C[double bond, length as m-dash]C bond of N-allenamides. The mechanism of the reaction was established by computational studies.
December 5, 2016: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/27917416/a-platinum-ii-palladium-ii-nickel-ii-heterotrimetallic-coordination-polymer-showing-a-cooperative-effect-on-catalytic-hydrogen-evolution
#15
Naoto Kuwamura, Yoshinari Kurioka, Takumi Konno
Stepwise construction of a 1D heterotrimetallic coordination polymer containing all three group 10 metal ions via an ammineplatinum(ii) metalloligand with d-penicillamine is reported. This system showed a significant enhancement in heterogeneous catalytic activity for electrochemical hydrogen evolution by the stepwise introduction of Pd(II) and Ni(II) into the Pt(II) metalloligand.
December 5, 2016: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/27916684/the-impact-of-obesity-on-compensatory-mechanisms-in-response-to-progressive-sagittal-malalignment
#16
Cyrus M Jalai, Bassel G Diebo, Dana L Cruz, Gregory W Poorman, Shaleen Vira, Aaron J Buckland, Renaud Lafage, Shay Bess, Thomas J Errico, Virginie Lafage, Peter G Passias
BACKGROUND CONTEXT: Obesity's impact on standing sagittal alignment remains poorly understood, especially with respect to the role of the lower-limbs. Given energetic expenditure in standing, a complete understanding of compensation in obese patients with sagittal malalignment remains relevant. PURPOSE: This study compares obese and non-obese patients with progressive sagittal malalignment for differences in recruitment of pelvic and lower limb mechanisms. STUDY DESIGN/SETTING: Single center retrospective review...
December 1, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27916167/post-resection-recurrence-of-hepatocellular-carcinoma-in-cirrhotic-patients-is-thrombocytopenia-a-risk-factor-for-recurrence
#17
Ahmed Shehta, Ho-Seong Han, Soyeon Ahn, Yoo-Seok Yoon, Jai Young Cho, Young Rok Choi
PURPOSE: Liver resection is the main treatment for hepatocellular carcinoma (HCC) patients with sufficient liver reserve. However, the long-term outcomes are dismal because the recurrence rate is high, especially in cirrhotic patients. The role of platelets as a predictive factor for HCC recurrence is still controversial. The aim of this study was to assess the influence of the preoperative platelet count on HCC recurrence after liver resection in patients with liver cirrhosis. STUDY DESIGN: Between 2004 and 2013, 233 HCC patients with pathologically proven liver cirrhosis underwent liver resection and were enrolled in this study...
December 2016: Surgical Oncology
https://www.readbyqxmd.com/read/27915355/perspectives-on-teaching-the-international-classification-of-functioning-disability-and-health-model-to-physical-therapy-students
#18
Cheryl Peters-Brinkerhoff
BACKGROUND: During a reaccreditation visit, deficiencies were discovered in the clinical education curriculum regarding patient-centered care in a Doctorate of Physical Therapy program. To understand the problem and address those deficiencies, the clinical internship experience was examined using the International Classification of Functioning, Disability, and Health (ICF) model as a conceptual framework for clinical reasoning. OBJECTIVE: This qualitative case study aimed to study (1) perceptions of physical therapy (PT) students regarding their knowledge and learning experiences during clinical affiliations and what knowledge they acquired of the ICF as applied to patient-centered care during their internship, and (2) the perceptions of clinical instructors (CIs) of their knowledge of the ICF model, its integration into their practice, barriers to its use, and the learning experiences the CIs provided to students regarding the ICF model...
2016: Journal of Allied Health
https://www.readbyqxmd.com/read/27914721/corrigendum-to-reversal-of-ethanol-induced-hepatotoxicity-by-cinnamic-and-syringic-acids-in-mice-food-chem-toxicol-98-pt-b-2016-oct-25-119-126
#19
Sheng-Lei Yan, Zhi-Hong Wang, Hsiu-Fang Yen, Yi-Ju Lee, Mei-Chin Yin
No abstract text is available yet for this article.
November 30, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27914342/cu3-btc-2-catalyzed-dehydrogenative-coupling-of-dimethylphenylsilane-with-phenol-and-homocoupling-of-dimethylphenylsilane-to-disiloxane
#20
Nagaraj Anbu, Amarajothi Dhakshinamoorthy
Cu3(BTC)2 (BTC: 1,3,5-benzenetricarboxylic acid) showed to be an efficient and reusable heterogeneous solid catalyst for the formation of SiO bond through dehydrogenative coupling of dimethylphenylsilane (1) with phenol under mild reaction conditions. It is observed that Fe(BTC), MIL-101(Cr) and UiO-66(Zr) are not able to promote this cross coupling between 1 and phenol. Cu3(BTC)2 exhibits higher stability and activity compared to other MOFs studied here. Furthermore, Cu3(BTC)2 is reused for three consecutive cycles with a slight decay in its activity...
November 24, 2016: Journal of Colloid and Interface Science
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