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https://www.readbyqxmd.com/read/28917883/green-cellulose-based-nanocomposite-catalyst-design-and-facile-performance-in-aqueous-synthesis-of-pyranopyrimidines-and-pyrazolopyranopyrimidines
#1
Ali Maleki, Abbas Ali Jafari, Somayeh Yousefi
A cellulose-based nanobiocomposite decorated with Fe3O4 nanoparticles was prepared, characterized and applied as an easily recoverable and reusable green nanocatalyst in the synthesis of pyrano[2,3-d]pyrimidine derivatives in water at room temperature. The characterization was performed by using a variety of conventional analytical instruments such as Fourier transform infrared spectra (FT-IR), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), energy dispersive X-ray (EDX), vibrating sample magnetometer (VSM), thermal analysis (TGA/DTA) and inductively coupled plasma atomic emission spectroscopy (ICP-AES) analyses...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28917587/early-or-late-radiotherapy-following-gross-or-subtotal-resection-for-atypical-meningiomas-clinical-outcomes-and-local-control
#2
Ammoren Dohm, Emory R McTyre, Michael D Chan, Claire Fan, Scott Isom, J Daniel Bourland, Ryan T Mott, Christina K Cramer, Stephen B Tatter, Adrian W Laxton
We report a single institution series of surgery followed by either early adjuvant or late radiotherapy for atypical meningiomas (AM). AM patients, by WHO 2007 definition, underwent subtotal resection (STR) or gross total resection (GTR). Sixty-three of a total 115 patients then received fractionated or stereotactic radiation treatment, early adjuvant radiotherapy (≤4months after surgery) or late radiotherapy (at the time of recurrence). Kaplan Meier method was used for survival analysis with competing risk analysis used to assess local failure...
September 13, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28917019/the-trend-toward-minimally-invasive-complex-abdominal-wall-reconstruction-is-it-worth-it
#3
Igor Belyansky, Adam S Weltz, Udai S Sibia, Justin J Turcotte, Haley Taylor, H Reza Zahiri, T Robert Turner, Adrian Park
BACKGROUND: Open abdominal wall reconstruction (AWR) was previously one of the only methods available to treat complex ventral hernias. We set out to identify the impact of laparoscopy and robotics on our AWR program by performing an economic analysis before and after the institution of minimally invasive AWR. METHODS: We retrospectively reviewed inpatient hospital costs and economic factors for a consecutive series of 104 AWR cases that utilized separation of components technique (57 open, 38 laparoscopic, 9 robotic)...
September 15, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28916408/robot-assisted-kidney-transplantation-the-european-experience
#4
Alberto Breda, Angelo Territo, Luis Gausa, Volkan Tuğcu, Antonio Alcaraz, Mireia Musquera, Karel Decaestecker, Liesbeth Desender, Michael Stockle, Martin Janssen, Paolo Fornara, Nasreldin Mohammed, Giampaolo Siena, Sergio Serni, Luis Guirado, Carma Facundo, Nicolas Doumerc
BACKGROUND: Robot-assisted kidney transplantation (RAKT) has recently been introduced to reduce the morbidity of open kidney transplantation (KT). OBJECTIVE: To evaluate perioperative and early postoperative RAKT outcomes. DESIGN, SETTING AND PARTICIPANTS: This was a multicenter prospective observational study of 120 patients who underwent RAKT, predominantly with a living donor kidney, in eight European institutions between July 2015 and May 2017, with minimum follow-up of 1 mo...
September 12, 2017: European Urology
https://www.readbyqxmd.com/read/28916149/wavelet-based-tracking-of-bacteria-in-unreconstructed-off-axis-holograms
#5
Zach Marin, J Kent Wallace, Jay Nadeau, Andre Khalil
We propose an automated wavelet-based method of tracking particles in unreconstructed off-axis holograms to provide rough estimates of the presence of motion and particle trajectories in digital holographic microscopy (DHM) time series. The wavelet transform modulus maxima segmentation method is adapted and tailored to extract Airy-like diffraction disks, which represent bacteria, from DHM time series. In this exploratory analysis, the method shows potential for estimating bacterial tracks in low-particle-density time series, based on a preliminary analysis of both living and dead Serratia marcescens, and for rapidly providing a single-bit answer to whether a sample chamber contains living or dead microbes or is empty...
September 12, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28916038/a-tri-metal-centered-metal-organic-framework-for-solid-phase-microextraction-of-environmental-contaminants-with-enhanced-extraction-efficiency
#6
Shuqin Liu, Lijun Xie, Qingkun Hu, Huangsheng Yang, Guanrui Pan, Fang Zhu, Shenghong Yang, Gangfeng Ouyang
This study presents the preparation and the characterizations of six tri-metal centered metal-organic frameworks (tM-MOFs) as solid-phase microextraction (SPME) adsorbents. Possessing different proportions of Al, Ga and In atoms in their frameworks, the tM-MOF-based SPME coatings exhibited different extraction performance towards the organic pollutants. Extraction results showed that the M4 (Al0.593Ga0.167In0.240(O2C2H4)(h2fipbb)) coating exhibited the best enrichment ability among six tM-MOFs. In addition, it showed better extraction efficiency towards the analytes than three single-metal centered MOFs coatings and a commercial polydimethylsiloxane (PDMS) coating...
September 22, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28915941/paper-spray-and-kendrick-mass-defect-analysis-of-block-and-random-ethylene-oxide-propylene-oxide-copolymers
#7
Robert B Cody, Thierry Fouquet
Paper spray ionization coupled with a high-resolution time-of-flight mass spectrometer was applied to the analysis of 13 block and 2 random ethylene oxide/propylene oxide (EO/PO) copolymers as well as to standard samples of poly(ethylene oxide) and poly(propylene oxide) homopolymers. Paper spray mass spectra could be obtained rapidly and, unlike electrospray ionization, were not subject to contamination and sample carryover. For comparison, polyether samples were also measured on a MALDI/TOF system with ultrahigh mass resolving power...
October 9, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28915915/nocturnal-heart-rate-variability-in-1-year-old-infants-analyzed-by-using-the-least-square-cosine-spectrum-method
#8
Yuko Kochiya, Akari Hirabayashi, Yuhei Ichimaru
BACKGROUND: To evaluate the dynamic nature of nocturnal heart rate variability, RR intervals recorded with a wearable heart rate sensor were analyzed using the Least Square Cosine Spectrum Method. METHODS: Six 1-year-old infants participated in the study. A wearable heart rate sensor was placed on their chest to measure RR intervals and 3-axis acceleration. Heartbeat time series were analyzed for every 30 s using the Least Square Cosine Spectrum Method, and an original parameter to quantify the regularity of respiratory-related heart rate rhythm was extracted and referred to as "RA (RA-COSPEC: Respiratory Area obtained by COSPEC)...
September 16, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28915360/risk-factors-for-reoperation-and-performance-based-outcomes-after-operative-fixation-of-foot-fractures-in-the-professional-athlete-a-cross-sport-analysis
#9
Sameer Singh, Kevin Larkin, Anish Kadakia, Wellington Hsu
BACKGROUND: Professional athletes are predisposed to fractures of the foot due to large stresses placed on the lower extremity. These players are concerned with efficiently returning to play at a high level. Return-to-play rates after operative treatment have been previously reported, yet performance outcomes after such treatment are generally unknown in this population. HYPOTHESIS: Overall, professional athletes sustaining a foot fracture would return to play at high rates with little impact on post-operative performance or league participation...
September 1, 2017: Sports Health
https://www.readbyqxmd.com/read/28914871/-intramedullary-spinal-cord-tumors-and-hydrocephalus-an-analysis-of-the-results-of-surgical-treatment-in-541-patients
#10
Yu V Kushel', Yu D Belova, A R Tekoev
The article addresses the problem of intramedullary tumors (IMTs) combined with hydrocephalus (HC). PURPOSE: The study purpose was to explore, based on large clinical material, the occurrence of hydrocephalus combined with intramedullary tumors, possible pathogenetic mechanisms of its development, effect of tumor resection on the course of hydrocephalus, and need and timing of shunting surgery. MATERIAL AND METHODS: We present and analyze the data of the largest individual series of patients of all age groups operated on for IMTs of the spinal cord: 541 patients; 586 operations; age from 2 months to 72 years...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28912112/molecular-basis-of-peripheral-olfactory-sensing-during-oviposition-in-the-behavior-of-the-parasitic-wasp-anastatus-japonicus
#11
Yinliang Wang, Qi Chen, Junqi Guo, Jing Li, Jiatong Wang, Ming Wen, Hanbo Zhao, Bingzhong Ren
Anastatus japonicus is a parasitic wasp and natural enemy of the litchi pest Tessaratoma papillosa, and for decades in China, A. japonicus has been mass-reared inside the eggs of Antheraea pernyi to control T. papillosa. A series of experiments was performed to explore the olfactory mechanism underlying the oviposition behavior of A. japonicus. First, a transcriptomic analysis was performed on the antennae of A. japonicus, and the resulting assemblies led to the generation of 70,473 unigenes. Subsequently, 21,368 unigenes were matched to known proteins, and 48 odorant receptors (ORs) (including Orco) and 13 antennal ionotropic receptors (IRs) (including the co-receptors IR8a and IR25a) were identified and predicted to form complete open reading frames (ORFs)...
September 11, 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28911902/the-impact-of-10-valent-and-13-valent-pneumococcal-conjugate-vaccines-on-hospitalization-for-pneumonia-in-children-a-systematic-review-and-meta-analysis
#12
REVIEW
Cristiano Alicino, Chiara Paganino, Andrea Orsi, Matteo Astengo, Cecilia Trucchi, Giancarlo Icardi, Filippo Ansaldi
BACKGROUND: This systematic review and meta-analysis aimed at summarizing available data on the impact of PCV10 and PCV13 in reducing the incidence of CAP hospitalizations in children aged <5years. METHODS: A systematic search of the literature was conducted. We included time-series analyses and before-after studies, reporting the incidence of hospitalization for pneumonia in the periods before and after the introduction of PCV10 or PCV13 into the immunization program...
September 11, 2017: Vaccine
https://www.readbyqxmd.com/read/28910933/-visual-spatial-and-temporal-characteristics-related-to-infectious-tuberculosis-epidemics-in-guangxi-zhuang-autonomous-region-2012-2015
#13
M Lin, Z Z Cui, D W Lin, D B Liang, M Y Huang, H B Su, X Y Tang
Objective: To study the spatial and temporal mode of infectious TB transmission in Guangxi Zhuang Autonomous Region (Guangxi). Methods: Data related to infectious TB case (Include smear and/or culture positive patients) in Guangxi were collected from the National Notifiable Disease Reported System (NNDRS) from 2010 to 2015. Spatial-temporal analysis and prediction were performed by SaTScan 7.0.2, GeoDa 1.8.12, R program v 3.3.1 and SPSS 19.0 software, using the time series model, Moran's I global and local spatial autocorrelation (Empirical Bayes adjustment)...
September 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28910375/application-of-droplet-digital-pcr-for-quantitative-detection-of-spiroplasma-citri-in-comparison-with-real-time-pcr
#14
Yogita Maheshwari, Vijayanandraj Selvaraj, Subhas Hajeri, Raymond Yokomi
Droplet digital polymerase chain reaction (ddPCR) is a method for performing digital PCR that is based on water-oil emulsion droplet technology. It is a unique approach to measure the absolute copy number of nucleic acid targets without the need of external standards. This study evaluated the applicability of ddPCR as a quantitative detection tool for the Spiroplasma citri, causal agent of citrus stubborn disease (CSD) in citrus. Two sets of primers, SP1, based on the spiral in housekeeping gene, and a multicopy prophage gene, SpV1 ORF1, were used to evaluate ddPCR in comparison with real time (quantitative) PCR (qPCR) for S...
2017: PloS One
https://www.readbyqxmd.com/read/28910294/auto-correlation-in-the-motor-imaginary-human-eeg-signals-a-vision-about-the-fdfa-fluctuations
#15
Gilney Figueira Zebende, Florêncio Mendes Oliveira Filho, Juan Alberto Leyva Cruz
In this paper we analyzed, by the FDFA root mean square fluctuation (rms) function, the motor/imaginary human activity produced by a 64-channel electroencephalography (EEG). We utilized the Physionet on-line databank, a publicly available database of human EEG signals, as a standardized reference database for this study. Herein, we report the use of detrended fluctuation analysis (DFA) method for EEG analysis. We show that the complex time series of the EEG exhibits characteristic fluctuations depending on the analyzed channel in the scalp-recorded EEG...
2017: PloS One
https://www.readbyqxmd.com/read/28906447/material-viscoelasticity-induced-drift-of-micro-accelerometers
#16
Wu Zhou, Peng Peng, Huijun Yu, Bei Peng, Xiaoping He
Polymer-based materials are commonly used as an adhesion layer for bonding die chip and substrate in micro-system packaging. Their properties exhibit significant impact on the stability and reliability of micro-devices. The viscoelasticity, one of most important attributes of adhesive materials, is investigated for the first time in this paper to evaluate the long-term drift of micro-accelerometers. The accelerometer was modeled by a finite element (FE) method to emulate the structure deformation and stress development induced by change of adhesive property...
September 14, 2017: Materials
https://www.readbyqxmd.com/read/28905886/time-series-oligonucleotide-count-to-assign-antiviral-sirnas-with-long-utility-fit-in-the-big-data-era
#17
K Wada, Y Wada, Y Iwasaki, T Ikemura
Oligonucleotides are key elements of nucleic acid therapeutics such as small interfering RNAs (siRNAs). Influenza and Ebolaviruses are zoonotic RNA viruses mutating very rapidly, and their sequence changes must be characterized intensively to design therapeutic oligonucleotides with long utility. Focusing on a total of 182 experimentally validated siRNAs for influenza A, B and Ebolaviruses compiled by the siRNA database, we conducted time-series analyses of occurrences of siRNA targets in these viral genomes...
September 14, 2017: Gene Therapy
https://www.readbyqxmd.com/read/28905289/lymph-node-positive-prostate-cancer-after-robotic-prostatectomy-and-extended-pelvic-lymphadenectomy
#18
Avinash Chenam, Jaspreet S Parihar, Nora Ruel, Sumanta Pal, Yvonne Avila, Jonathan Yamzon, Clayton Lau, Bertram Yuh
Optimal management of node-positive prostate cancer patients after prostatectomy remains a challenge. We evaluated clinically localized patients who demonstrated node positivity and identified predictors for secondary treatment. From 2010 to 2015, clinically localized prostate cancer patients who underwent robot prostatectomy with extended lymphadenectomy and node-positive disease on pathologic analysis were identified. Clinical N1, M1 or salvage cases were excluded. Patients were stratified based on secondary treatments...
September 13, 2017: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/28904999/linking-spatial-structure-and-community-level-biotic-interactions-through-cooccurrence-and-time-series-modeling-of-the-human-intestinal-microbiota
#19
Eric J de Muinck, Knut E A Lundin, Pål Trosvik
The gastrointestinal (GI) microbiome is a densely populated ecosystem where dynamics are determined by interactions between microbial community members, as well as host factors. The spatial organization of this system is thought to be important in human health, yet this aspect of our resident microbiome is still poorly understood. In this study, we report significant spatial structure of the GI microbiota, and we identify general categories of spatial patterning in the distribution of microbial taxa along a healthy human GI tract...
September 2017: MSystems
https://www.readbyqxmd.com/read/28902972/covered-duodenal-self-expandable-metal-stents-prolong-biliary-stent-patency-in-double-stenting-the-largest-series-of-bilioduodenal-obstruction
#20
Yasuki Hori, Itaru Naitoh, Kazuki Hayashi, Hiromu Kondo, Michihiro Yoshida, Shuya Shimizu, Atsuyuki Hirano, Fumihiro Okumura, Tomoaki Ando, Naruomi Jinno, Hiroki Takada, Shozo Togawa, Takashi Joh
BACKGROUND: Endoscopic biliary and duodenal stenting (DS; double stenting) is widely accepted as a palliation therapy for malignant bilioduodenal obstruction. The aim of the current study was to investigate the patency and adverse events of duodenal and biliary stents in patients with DS. METHODS: Patients who underwent DS from April 2004 to March 2017 were analyzed retrospectively with regard to clinical outcomes and predictive factors of recurrent biliary and duodenal obstruction (recurrent biliary obstruction [RBO] and recurrent duodenal obstruction [RDO])...
September 13, 2017: Journal of Gastroenterology and Hepatology
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