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https://www.readbyqxmd.com/read/28640296/synthesis-and-photophysical-and-magnetic-studies-of-ternary-lanthanide-iii-complexes-of-naphthyl-chromophore-functionalized-imidazo-4-5-f-1-10-phenanthroline-and-dibenzoylmethane
#1
A Josephine Kanimozhi, V Alexander
The luminescent ternary lanthanide(iii) complexes [Ln(DBM)3(L1)] and [Ln(DBM)3(L2)] (Ln = Eu and Tb) of dibenzoylmethane (DBM) and 2-(2-naphthyl)-1H-imidazo[4,5-f][1,10]phenanthroline (L1) and 2-(2-hydroxy-1-naphthyl)-1H-imidazo[4,5-f][1,10]phenanthroline (L2) are reported in this work. The naphthyl chromophore functionalized imidazophenanthroline ligands L1 and L2 are structurally characterized by using single crystal X-ray diffraction: (L1), a = 14.933(4) Å, b = 7.4965(13) Å, c = 15.999(4) Å, α = γ = 90°, β = 102...
June 22, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28622184/does-age-influence-the-efficacy-of-demineralized-bone-matrix-enriched-with-concentrated-bone-marrow-aspirate-in-lumbar-fusions
#2
Remi M Ajiboye, Mark A Eckardt, Jason T Hamamoto, Akshay Sharma, Adam Z Khan, Jeffrey C Wang
STUDY DESIGN: Retrospective study. OBJECTIVE: Evaluate the effect of age on the efficacy of allograft/demineralized bone matrix (DBM) enriched with concentrated bone marrow aspirate (BMA) in posterolateral lumbar fusions (PLFs). SUMMARY OF BACKGROUND DATA: Cell-based therapies such as concentrated BMA have been developed as a potential alternative to iliac crest bone graft (ICBG). BMA contains mesenchymal stem cells (MSCs) and growth factors that can confer osteogenic and osteoinductive potential to osteoconductive scaffolds such as DBM/allograft...
June 15, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28576299/effects-of-donor-breastmilk-feeding-on-growth-and-early-neurodevelopmental-outcomes-in-preterm-infants-an-observational-study
#3
Laura S Madore, Samudragupta Bora, Carmina Erdei, Tina Jumani, Allison R Dengos, Sarbattama Sen
PURPOSE: Donor breastmilk (DBM) has gained popularity as an alternative to formula when mother's own milk (MOM) is unavailable. The objective of this study was to evaluate the effects of a predominantly DBM diet on growth and subsequent neurodevelopment in preterm infants at a level 3 neonatal intensive care unit (NICU). METHODS: This single-center, observational cohort study compared data from preterm infants supplemented with predominantly (>50%) DBM to those from age- and weight-matched infants fed only MOM or supplemented with predominantly (>50%) preterm formula (PF)...
May 30, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28572578/integrated-fiber-optical-receiver-reducing-the-gap-to-the-quantum-limit
#4
Horst Zimmermann, Bernhard Steindl, Michael Hofbauer, Reinhard Enne
Experimental results of a single-photon avalanche diode (SPAD) based optical fiber receiver integrated in 0.35 µm PIN-photodiode CMOS technology are presented. To cope with the parasitic effects of SPADs an array of four receivers is implemented. The SPADs consist of a multiplication zone and a separate thick absorption zone to achieve a high photon detection probability (PDP). In addition cascoded quenchers allow to use a quenching voltage of twice the usual supply voltage, i.e. 6.6 V instead of 3.3 V, in order to increase the PDP further...
June 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28571463/a-q-band-low-noise-gaas-phemt-mmic-power-amplifier-for-pulse-electron-spin-resonance-spectrometer
#5
A Sitnikov, E Kalabukhova, V Oliynyk, M Kolisnichenko
We present the design and development of a single stage pulse power amplifier working in the frequency range 32-38 GHz based on a monolithic microwave integrated circuit (MMIC). We have designed the MMIC power amplifier by using the commercially available packaged GaAs pseudomorphic high electron mobility transistor. The circuit fabrication and assembly process includes the elaboration of the matching networks for the MMIC power amplifier and their assembling as well as the topology outline and fabrication of the printed circuit board of the waveguide-microstrip line transitions...
May 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28556436/effect-of-recombinant-human-bone-morphogenic-protein-9-rhbmp9-loaded-onto-bone-grafts-versus-barrier-membranes-on-new-bone-formation-in-a-rabbit-calvarial-defect-model
#6
Masako Fujioka-Kobayashi, Eizaburo Kobayashi, Benoit Schaller, Matthias Mottini, Richard J Miron, Nikola Saulacic
Recent research has demonstrated that recombinant human bone morphogenetic protein 9 (rhBMP9) has been considered the most osteoinductive growth factor of the BMP-family. In the present study, rhBMP9 was investigated for its influence in combination with two biomaterials for bone regenerative medicine. Either porcine-derived collagen membrane (CM) or deproteinized bovine bone mineral (DBM) combined with 20 µg of rhBMP9 were implanted in 6 mm rabbit calvarial defects. Bone augmentation was evaluated by microCT and histomorphometry at 8 weeks post-surgery...
May 27, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28548246/comparison-of-three-different-types-of-scaffolds-preseeded-with-human-bone-marrow-mononuclear-cells-on-the-bone-healing-in-a-femoral-critical-size-defect-model-of-the-athymic-rat
#7
Maren Janko, Julian Sahm, Alexander Schaible, Jan C Brune, Marlene Bellen, Katrin Schröder, Caroline Seebach, Ingo Marzi, Dirk Henrich
Large bone defects often pose major difficulties in orthopedic surgery. The application of long term cultured stem cells combined with a scaffold lead to a significant improvement of bone healing in recent experiments but is strongly restricted by EU-law. Bone marrow mononuclear cells (BMC), however, can be isolated and transplanted within few hours and have been proven effective in experimental models of bone healing. The effectivity of the BMC supported therapy might be influenced by the type of scaffold...
May 26, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28547589/stereotactic-radiosurgery-for-brain-metastases-from-primary-head-and-neck-carcinomas-a-retrospective-analysis
#8
Rajal A Patel, Jonathan B Bell, Thomas Kim, Mark Agulnik, James P Chandler, Bharat B Mittal, Tim J Kruser
Patients with head and neck malignancies commonly develop metastatic disease, yet rarely do these carcinomas metastasize to the brain. Stereotactic radiosurgery (SRS) is routinely employed to treat brain metastases (BM). This study was undertaken to examine the efficacy of SRS for BM from primary head and neck carcinomas. From 2000 to 2016, a total of 19 patients with 38 lesions were retrospectively identified. All patients presented with a primary head and neck malignancy and subsequently developed metastatic disease to the brain treated with SRS at our institution...
May 25, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28541688/circularly-polarized-luminescence-of-silica-grafted-europium-chiral-derivatives-prepared-through-a-sequential-functionalization
#9
Lidia Armelao, Daniela Belli Dell'Amico, Luca Bellucci, Gregorio Bottaro, Lorenzo Di Bari, Luca Labella, Fabio Marchetti, Simona Samaritani, Francesco Zinna
We describe a new organic/inorganic material emitting circularly polarized luminescence (CPL). The hybrid system was obtained by the following steps: (i) preliminary grafting of the europium N,N-dibutylcarbamate [Eu(O2CNBu2)3] complex onto silica, (ii) substitution of the residual carbamato groups with anionic 1,3-diphenyl-1,3-propanedionato ligands (dbm), and (iii) subsequent introduction of the neutral tridentate chiral ligand 2,6-bis(isopropyl-2-oxazolin-2-yl)pyridine ((i)Pr-PyBox) in the metal coordination sphere...
May 25, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28512315/midgut-bacteria-in-deltamethrin-resistant-deltamethrin-susceptible-and-field-caught-populations-of-plutella-xylostella-and-phenomics-of-the-predominant-midgut-bacterium-enterococcus-mundtii
#10
Wenhong Li, Daochao Jin, Caihua Shi, Fengliang Li
Gut bacteria play a significant role in host insect. This study evaluated detail difference of midgut bacteria in deltamethrin-resistant, deltamethrin-susceptible and field-caught populations of diamondback moth, and studied phenomics of the predominant midgut bacterium Enterococcus mundtii. Cultivable bacteria revealed that E. mundtii and Carnobacterium maltaromaticum dominated the bacterial populations from deltamethrin-resistant and deltamethrin-susceptible larval midguts, whereas E. mundtii was predominant in field-caught population...
May 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28481087/influence-of-eu-iii-complexes-structural-anisotropy-on-luminescence-of-doped-conjugated-polymer-blends
#11
Andrey A Knyazev, Maksim E Karyakin, Aleksandr S Krupin, Ksenia A Romanova, Yuriy G Galyametdinov
Europium(III) complexes that are the anisometric analogues of a well-known Eu(DBM)3Phen (DBM = dibenzoylmethane; Phen = 1,10-phenanthroline) complex were synthesized. Quantum-chemical calculations of the excited states of new Eu(III) complexes and some conjugated polymers showed that poly(N-vinylcarbazole) provides the most efficient energy transfer in polymer films doped with synthesized Eu(III) complexes. These new composite films were prepared, and their luminescence properties were studied. The results of experimental data confirmed theoretical prediction about significant influence introduced in molecular structure long terminal alkyl chains and cyclohexane on the luminescence efficiency of "Ln(III)-polymer" composite...
May 8, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28468334/hybrid-integration-of-modified-uni-traveling-carrier-photodiodes-on-a-multi-layer-silicon-nitride-platform-using-total-reflection-mirrors
#12
Yang Shen, Shaoqi Feng, Xiaojun Xie, Jizhao Zang, Siwei Li, Tiehui Su, Kuanping Shang, Weicheng Lai, Guangyao Liu, S J Ben Yoo, Joe C Campbell
We demonstrate hybrid integration of modified uni-traveling carrier photodiodes on a multi-layer silicon nitride platform using total reflection mirrors etched by focused ion beam. The hybrid photodetectors show external responsivity of 0.15 A/W and bandwidth of 3.5 GHz for devices with a diameter of 80 µm. The insertion loss of the waveguide is 3 dB and the coupling efficiency of the total reflection mirror is -3 dB. The highest RF output power is -0.5 dBm measured at 3 GHz with 9 mA photocurrent and -9 V bias...
May 1, 2017: Optics Express
https://www.readbyqxmd.com/read/28467589/a-comparison-of-the-effects-of-platelet-rich-plasma-and-demineralized-bone-matrix-on-critical-bone-defects-an-experimental-study-on-rats
#13
Egemen Turhan, Mustafa Kemal Akça, Ahmet Bayar, Murat Songür, Selçuk Keser, Mahmut Nedim Doral
BACKGROUND: Delayed union of fractured bone is one of the main problems of orthopedics and traumatology practice. It was hypothesized that the beneficial effects of allogeneic platelet-rich plasma (PRP) would be valuable in the treatment of segmental bone defects. This study is a comparison of the effects of demineralized bone matrix (DBM) and PRP in a segmental bone defect model. METHODS: Total of 48 Wistar albino rats were separated into 4 groups. Segmental bone defect was created at right radius diaphysis in all specimens using dorsal approach...
March 2017: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/28466936/a-near-infrared-organic-light-emitting-diode-based-on-an-yb-iii-complex-synthesized-by-vacuum-co-deposition
#14
Kazuya Jinnai, Ryota Kabe, Chihaya Adachi
Yb(DBM)3(DPEPO), an emitter, was directly synthesized on a substrate by the vacuum co-deposition of the precursor Yb(DBM)3(H2O)2 and the ligand DPEPO. OLEDs incorporating the co-deposited emitting layer (Yb(DBM)3(H2O)2 : DPEPO molar ratio = 1 : 1) achieved an ηEQE value of 0.15% at 1.0 mA cm(-2).
May 11, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28465546/comparative-transcriptome-analysis-of-venom-glands-from-cotesia-vestalis-and-diadromus-collaris-two-endoparasitoids-of-the-host-plutella-xylostella
#15
Wei Zhao, Min Shi, Xi-Qian Ye, Fei Li, Xiao-Wei Wang, Xue-Xin Chen
Venoms secreted by the venom gland (VG) of parasitoid wasp help ensure successful parasitism by host immune suppression and developmental regulation. Cotesia vestalis, a larval endoparasitoid, and Diadromus collaris, a pupal endoparasitoid, parasitize the diamondback moth (DBM), Plutella xylostella. To explore and compare the venom components of two endoparasitoids, we sequenced transcriptomes of the VGs and wasp bodies without VGs (BWVGs) of the two endoparasitoids. Statistically enriched GO terms and KEGG pathways of the two VGs compared to respective whole-body background were similar and reflected active protein biosynthesis activities in the two VGs...
May 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28454157/wavelength-division-multiplexed-light-source-monolithically-integrated-on-a-silicon-photonics-platform
#16
P Purnawirman, Nanxi Li, E Salih Magden, Gurpreet Singh, Michele Moresco, Thomas N Adam, Gerard Leake, Douglas Coolbaugh, Jonathan D B Bradley, Michael R Watts
We demonstrate monolithic integration of a wavelength division multiplexed light source for silicon photonics by a cascade of erbium-doped aluminum oxide (Al<sub>2</sub>O<sub>3</sub>:Er<sup>3+</sup>) distributed feedback (DFB) lasers. Four DFB lasers with uniformly spaced emission wavelengths are cascaded in a series to simultaneously operate with no additional tuning required. A total output power of -10.9  dBm is obtained from the four DFBs with an average side mode suppression ratio of 38...
May 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28444827/fitness-costs-and-life-table-parameters-of-highly-insecticide-resistant-strains-of-plutella-xylostella-l-lepidoptera-plutellidae-at-different-temperatures
#17
Denise Steinbach, Gerald Moritz, Ralf Nauen
BACKGROUND: In many cases, resistance alleles have been associated with fitness costs and are often dependent on environmental factors such as temperature. Here, we studied the effects of temperature on the overall fitness, including development, survival and reproduction, of three insecticide-resistant and one susceptible strain of diamondback moth (DBM), Plutella xylostella (L.). RESULTS: The broader cross-resistance profile of the resistant strains previously selected by diamide and benzoylurea insecticides was tested...
April 26, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28429412/bone-extracellular-matrix-hydrogel-enhances-osteogenic-differentiation-of-c2c12-myoblasts-and-mouse-primary-calvarial-cells
#18
Noura Alom, Heather Peto, Glen R Kirkham, Kevin M Shakesheff, Lisa J White
Hydrogel scaffolds derived from the extracellular matrix (ECM) of mammalian tissues have been successfully used to promote tissue repair in vitro and in vivo. The objective of this study was to evaluate the osteogenic potential of ECM hydrogels prepared from demineralized and decellularized bovine bone in the presence and absence of osteogenic medium. Culture of C2C12 and mouse primary calvarial cells (mPCs) on decellularized bone ECM (bECM) and demineralized bone matrix (DBM) gels resulted in increased expression of osteogenic gene markers, including a 3...
April 21, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28422068/a-low-cost-bluetooth-low-energy-transceiver-for-wireless-sensor-network-applications-with-a-front-end-receiver-matching-network-reusing-power-amplifier-load-inductor
#19
Zhen Liang, Bin Li, Mo Huang, Yanqi Zheng, Hui Ye, Ken Xu, Fangming Deng
In this work, a low cost Bluetooth Low Energy (BLE) transceiver for wireless sensor network (WSN) applications, with a receiver (RX)-matching network-reusing power amplifier (PA) load inductor, is presented. In order to decrease the die area, only two inductors were used in this work. Besides the one used in the voltage control oscillator (VCO), the PA load inductor was reused as the RX impedance matching component in the front-end. Proper controls have been applied to achieve high transmitter (TX) input impedance when the transceiver is in the receiving mode, and vice versa...
April 19, 2017: Sensors
https://www.readbyqxmd.com/read/28421389/preparation-and-biocompatibility-of-demineralized-bone-matrix-sodium-alginate-putty
#20
Yumin Zhang, Jianru Wang, Yanmiao Ma, Xiaojun Niu, Jianchun Liu, Lan Gao, Xiaoyan Zhai, Kaibo Chu, Bo Han, Liwang Yang, Jue Wang
Demineralized bone matrix (DBM) powder is widely used for bone regeneration due to its osteoinductivity and osteoconductivity. However, difficulties with handling, tendency to migrate from graft sites and lack of stability after surgery sometimes limit the clinical utility of this material. In this work, the possibility of using sodium alginate (ALG) carrier to deliver DBM powder was assessed. DBM-ALG putty with the DBM:ALG weight ratio of 5:5, 6:4, 7:3, 8:2 were prepared, respectively. The properties of the formed composite, including discrete degree, washout property, pH, equilibrium swelling as well as cytotoxicity in vivo, were adopted to ascertain the optimal ratio of DBM and ALG...
June 2017: Cell and Tissue Banking
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