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https://www.readbyqxmd.com/read/29783166/in-situ-sludge-reduction-and-carbon-reuse-in-an-anoxic-oxic-process-coupled-with-hydrocyclone-breakage
#1
Yinxiang Xu, Yuanyuan Fang, Zhenhua Wang, Dan Guo, Yi Liu, Yuan Huang, Pengbo Fu, Juehui Jin, Chenwen Wei, Hualin Wang, Tao Zeng
The long-term performance of an anoxic-oxic-hydrocyclone (AOH) process with an in-situ hydrocyclone treatment unit in the mixed liquid return line for sludge reduction and carbon reuse has been observed, in comparison with a conventional anoxic-oxic (AO) process. Three parallel side-stream systems, including one AOH25 system with a 25-mm hydrocyclone, one AOH35 system with a 35-mm hydrocyclone and one AO system, were built and fed with real wastewater for a comparative study in a wastewater treatment plant...
May 9, 2018: Water Research
https://www.readbyqxmd.com/read/29782692/the-influence-of-chemical-modification-on-linker-rotational-dynamics-in-metal-organic-frameworks
#2
Joshua Damron, Jialiu Ma, Ricardo Kurz, Kay Saalwaechter, Adam Matzger, Ayyalusamy Ramamoorthy
The robust synthetic flexibility of metal-organic frameworks (MOFs) offers a promising class of tailorable materials, for which, the ability to tune specific physicochemical properties is highly desired. This is achievable only through a thorough description of the consequences for chemical manipulations both in structure and dynamics. Magic angle spinning solid-state NMR spectroscopy offers many modalities in this pursuit, particularly for dynamic studies. Herein, we employ a separated-local-field NMR approach to show how specific intra-framework chemical modifications to MOF UiO66 heavily modulate the dynamic evolution of the organic ring moiety over several orders of magnitude...
May 21, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29782525/impact-of-agronomy-practices-on-the-effects-of-reduced-tillage-systems-on-ch4-and-n2o-emissions-from-agricultural-fields-a-global-meta-analysis
#3
Jinfei Feng, Fengbo Li, Xiyue Zhou, Chunchun Xu, Long Ji, Zhongdu Chen, Fuping Fang
The effect of no- and reduced tillage (NT/RT) on greenhouse gas (GHG) emission was highly variable and may depend on other agronomy practices. However, how the other practices affect the effect of NT/RT on GHG emission remains elusive. Therefore, we conducted a global meta-analysis (including 49 papers with 196 comparisons) to assess the effect of five options (i.e. cropping system, crop residue management, split application of N fertilizer, irrigation, and tillage duration) on the effect of NT/RT on CH4 and N2O emissions from agricultural fields...
2018: PloS One
https://www.readbyqxmd.com/read/29782425/increased-arterial-stiffness-in-a-cohort-of-pediatric-takayasu-arteritis-patients-in-toronto-adversely-affects-left-ventricular-mechanics
#4
Heynric B Grotenhuis, Florence A Aeschlimann, Wei Hui, Cameron Slorach, Rae S M Yeung, Susanne M Benseler, Timothy J Bradley, Lars Grosse-Wortmann
BACKGROUND/OBJECTIVE: Takayasu arteritis (TA) is characterized by extensive aortic, large and midsize arterial wall inflammation. The aim of this study was to assess the morphological and elastic properties of the aorta and large arteries and the impact on left ventricular (LV) mechanics in children with TA. METHODS: Seven pediatric TA patients (6 female patients, 13.8 ± 3.2 years) were assessed with magnetic resonance imaging, vascular ultrasound, applanation tonometry, and echocardiography from February 2015 until July 2017 and compared with 7 age- and sex-matched controls...
May 19, 2018: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/29782153/temperature-responsive-fluorescent-organoplatinum-ii-metallacycles
#5
Jian-Hong Tang, Yue Sun, Zhong-Liang Gong, Zhong-Yu Li, Zhixuan Zhou, Heng Wang, Xiaopeng Li, Manik Lal Saha, Yu-Wu Zhong, Peter J Stang
The synthesis, characterization, and temperature-responsive properties of two fluorescent organoplatinum(II) metallacycles are reported. Metallacycles M1 and M2 were prepared via the coordination-driven self-assembly of a 120o triarylamine ligand L1 and a 120o diplatinum(II) acceptor Pt-1 or 180o diplatinum(II) acceptor Pt-2, respectively. M1 and M2 are hexagonal metallacycles, comprising of three or six freely rotating anthracene pendants on their periphery, respectively. In response to the temperature variation between 20 and 60 oC, the ligand displays irregular emission changes, whereas both metallacycles show reversible absorption and emission spectral changes in THF...
May 21, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29781853/the-use-of-pedicled-perforator-flaps-in-chest-reconstruction-a-systematic-review-of-outcomes-and-reliability
#6
Anne-Sophie Florczak, Benoit Chaput, Christian Herlin, Pascal Rousseau, Eric Watier, Nicolas Bertheuil
BACKGROUND: In recent years, pedicled perforator flaps have revolutionized plastic surgery by reducing donor site morbidity and ensuring larger and deeper reconstructions with local pedicled cutaneous flaps. The aim of the study was to make a systematic review of perforator pedicled propeller flaps (PPPFs) in chest reconstruction. METHODS: Pubmed and Cochrane databases were searched from 1989 to October 2016 for articles describing the use of PPPFs in chest reconstruction...
May 17, 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29781777/influence-of-sex-stereotyped-stimuli-on-the-mental-rotation-performance-of-elderly-persons
#7
Martina Rahe, Vera Ruthsatz, Petra Jansen, Claudia Quaiser-Pohl
BACKGROUND: In mental-rotation tests with cube figures as rotational objects, differences in favor of men are often found (Voyer, Voyer, & Bryden, 1995). Mental-rotation performance often declines with age (Jacewicz & Hartley, 1987), but sex differences usually remain (Herman & Bruce, 1983). METHODS: In this study, male- and female-stereotyped objects were used as rotational stimuli in a mental-rotation paper and pencil test (Ruthsatz, Neuburger, Rahe, Jansen, & Quaiser-Pohl, 2017) for elderly participants (age: 57-88 years)...
May 21, 2018: Experimental Aging Research
https://www.readbyqxmd.com/read/29781596/conservative-treatment-of-rotator-cuff-tear-in-older-patients-a-role-for-the-cycloergometer-a-randomized-study
#8
Bernardo Gialanella, Laura Comini, Marta Gaiani, Adriana Olivares, Simonetta Scalvini
BACKGROUND: To date, there are no published data on the use of devices in the management of rotator cuff tear (RCT). AIM: To evaluate the effect of supervised arm cycloergometer training on pain during activities and shoulder functionality in patients with symptomatic full-thickness RCT. DESIGN: This is a prospective randomized controlled pilot study. SETTING: Outpatients of our Rehabilitation Unit. POPULATION: In this pilot study, 40 elderly outpatients (>70 years) with RCT were randomized to two groups: Cycloergometer (CYC) vs...
May 18, 2018: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/29781484/microsolvated-complexes-of-ibuprofen-as-revealed-by-high-resolution-rotational-spectroscopy
#9
P Pinacho, A Krin, C Pérez, S Zinn, J C López, S Blanco, M Schnell
Hydrogen-bonded complexes between ibuprofen and water generated in a supersonic expansion were characterized using chirped-pulse Fourier transform microwave spectroscopy in the 2-8 GHz frequency range. Four spectra were observed allowing the determination of their rotational parameters. Comparison with quantum-chemical calculations led to their identification as the lowest energy 1 : 1 ibuprofen-water complexes. These correspond to the complexes between water and the four different conformers of ibuprofen previously detected in the gas phase, owing to their similar stabilization energies and abundances...
May 21, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29781477/methyl-rotation-dynamics-in-metal-organic-frameworks-probed-with-terahertz-spectroscopy
#10
Qi Li, Adam J Zaczek, Timothy M Korter, J Axel Zeitler, Michael T Ruggiero
In ZIF-8 and its cobalt analogue ZIF-67, the imidazolate methyl-groups, which point directly into the void space, have been shown to freely rotate - even down to cryogenic temperatures. Using a combination of experimental terahertz time-domain spectroscopy, low-frequency Raman spectroscopy, and state-of-the-art ab initio simulations, the methyl-rotor dynamics in ZIF-8 and ZIF-67 are fully characterized within the context of a quantum-mechanical hindered-rotor model. The results lend insight into the fundamental origins of the experimentally observed methyl-rotor dynamics, and provide valuable insight into the nature of the weak interactions present within this important class of materials...
May 21, 2018: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29781266/total-synthesis-of-laingolide-b-stereoisomers-and-assignment-of-absolute-configuration
#11
Chengsen Cui, Wei-Min Dai
Total synthesis of (-)-(2 R,9 S)- and (+)-(2 S,9 S)-stereoisomers of laingolide B has been accomplished by using sequential ring-closing metathesis (RCM) and alkene isomerization to construct the macrocyclic trans- N-methyl enamide moiety. The Myers alkylation was used to secure the C2 stereochemistry of the two RCM precursors from a common (9 S)-C3-C9 alkyl iodide. The absolute configuration of laingolide B has been assigned as (2 S,9 R) by comparison of the optical rotation data.
May 21, 2018: Organic Letters
https://www.readbyqxmd.com/read/29781029/infrared-spectrum-and-intermolecular-potential-energy-surface-of-the-co-o-2-dimer
#12
A J Barclay, A R W McKellar, N Moazzen-Ahmadi, Richard Dawes, Xiao-Gang Wang, Tucker Carrington
Only a few weakly-bound complexes containing the O2 molecule have been characterized by high resolution spectroscopy, no doubt due to the complications added by the oxygen molecule's unpaired electron spin. Here we report an extensive infrared spectrum of CO-O2, observed in the CO fundamental band region using a tunable quantum cascade laser to probe a pulsed supersonic jet expansion. The rotational energy level pattern derived from the spectrum consists of stacks of levels characterized by the total angular momentum, J, and its projection on the intermolecular axis, K...
May 21, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29781005/direct-observation-of-dynamical-magnetization-reversal-process-governed-by-shape-anisotropy-in-single-nife-2-o-4-nanowire
#13
Junli Zhang, Shimeng Zhu, Hongli Li, Liu Zhu, Yang Hu, Weixing Xia, Xixiang Zhang, Yong Peng, Jiecai Fu
Discovering how the magnetization reversal process is governed by the magnetic anisotropy in magnetic nanomaterials is essential and significant to understand the magnetic behaviour of micro-magnetics and to facilitate the design of magnetic nanostructures for diverse technological applications. In this study, we present a direct observation of a dynamical magnetization reversal process in single NiFe2O4 nanowire, thus clearly revealing the domination of shape anisotropy on its magnetic behaviour. Individual nanoparticles on the NiFe2O4 nanowire appear as single domain states in the remanence state, which is maintained until the magnetic field reaches 200 Oe...
May 21, 2018: Nanoscale
https://www.readbyqxmd.com/read/29780617/patellar-tracking-in-primary-total-knee-arthroplasty
#14
Simon Donell
This is a review of the recent literature of the various factors that affect patellar tracking following total knee arthroplasty (TKA).Patellar tracking principally depends on the pre-existing patellar tracking and the rotational alignment of the femoral and tibial implants, but the detailed movements depend on the patellar shape. The latter means that the patellar kinematics of any implanted TKA does not return to normal.Laboratory cadaveric studies use normal knees and non-activity-based testing conditions and so may not translate into clinical findings...
April 2018: EFORT Open Reviews
https://www.readbyqxmd.com/read/29780287/forward-modeling-of-coronal-mass-ejection-flux-ropes-in-the-inner-heliosphere-with-3dcore
#15
C Möstl, T Amerstorfer, E Palmerio, A Isavnin, C J Farrugia, C Lowder, R M Winslow, J M Donnerer, E K J Kilpua, P D Boakes
Forecasting the geomagnetic effects of solar storms, known as coronal mass ejections (CMEs), is currently severely limited by our inability to predict the magnetic field configuration in the CME magnetic core and by observational effects of a single spacecraft trajectory through its 3-D structure. CME magnetic flux ropes can lead to continuous forcing of the energy input to the Earth's magnetosphere by strong and steady southward-pointing magnetic fields. Here we demonstrate in a proof-of-concept way a new approach to predict the southward field B z in a CME flux rope...
March 2018: Space Weather: the International Journal of Research & Applications
https://www.readbyqxmd.com/read/29780265/does-focused-and-dedicated-teaching-improve-the-confidence-of-gp-trainees-to-diagnose-and-manage-common-acute-ent-pathologies-in-primary-care
#16
Vikas Acharya, Matthew Haywood, Naomi Kokkinos, Anisha Raithatha, Sinthuja Francis, Rishi Sharma
Background: General practitioners (GPs) are key members of the health care profession who are required to have a considerable breadth of knowledge to manage and treat patients effectively in the community. Their skills and experience varies depending on the medical school they attended and their foundation training and specialist GP training schemes. Exposure to ear, nose, and throat (ENT)-specific pathology is often insufficient due to the lack of formal otolaryngology rotations, minimal relevant teaching opportunities, and inconsistencies in curricula, despite ENT-related pathology presentations being one of the commonest consultations in primary care...
2018: Advances in Medical Education and Practice
https://www.readbyqxmd.com/read/29779980/risk-and-risk-factors-for-revision-after-primary-reverse-shoulder-arthroplasty-for-cuff-tear-arthropathy-and-osteoarthritis-a-nordic-arthroplasty-register-association-study
#17
Kaisa Lehtimäki, Jeppe V Rasmussen, Jari Mokka, Björn Salomonsson, Randi Hole, Steen Lund Jensen, Ville Äärimaa
BACKGROUND: Reverse shoulder arthroplasty (RSA) has gained increasing popularity in the treatment of rotator cuff tear arthropathy (CTA). The purpose of this study was to evaluate the survival of RSA and the risk factors for revision following RSA. METHODS: RSA patients with CTA or osteoarthritis were identified from the Nordic Arthroplasty Register Association registry data (2004-2013). Kaplan-Meier survival analysis was used to calculate survival probabilities...
May 17, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29779978/biomechanical-evaluation-of-cable-and-suture-cerclages-for-tuberosity-reattachment-in-a-4-part-proximal-humeral-fracture-model-treated-with-reverse-shoulder-arthroplasty
#18
Dominik Knierzinger, Christian H Heinrichs, Clemens Hengg, Marko Konschake, Franz Kralinger, Werner Schmoelz
BACKGROUND: Sufficient tuberosity fixation in proximal humeral fractures treated with shoulder arthroplasty is essential to gain a good clinical outcome. This biomechanical study evaluated the strength of the reattached tuberosities in reverse total shoulder arthroplasty fixed with cables or with sutures in a cerclage-like technique. Considering the mechanical advantages of flexible titanium alloy cables compared with conventional sutures for cerclage-like fixations, we hypothesized that titanium alloy cables would achieve higher fixation strengths of the tuberosities compared with heavy nonabsorbable sutures...
May 17, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29779875/three-dimensional-representation-of-motor-space-in-the-mouse-superior-colliculus
#19
Jonathan J Wilson, Nicolas Alexandre, Caterina Trentin, Marco Tripodi
From the act of exploring an environment to that of grasping a cup of tea, animals must put in register their motor acts with their surrounding space. In the motor domain, this is likely to be defined by a register of three-dimensional (3D) displacement vectors, whose recruitment allows motion in the direction of a target. One such spatially targeted action is seen in the head reorientation behavior of mice, yet the neural mechanisms underlying these 3D behaviors remain unknown. Here, by developing a head-mounted inertial sensor for studying 3D head rotations and combining it with electrophysiological recordings, we show that neurons in the mouse superior colliculus are either individually or conjunctively tuned to the three Eulerian components of head rotation...
May 15, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29779370/observation-of-interpenetration-isomerism-in-covalent-organic-frameworks
#20
Tianqiong Ma, Jian Li, Jing Niu, Lei Zhang, Ahmed S Etman, Cong Lin, Dier Shi, Pohua Chen, Lihua Li, Xin Du, Junliang Sun, Wei Wang
We report herein the first example of interpenetration isomerism in covalent organic frameworks (COFs). As a well-known three-dimensional (3D) COF, COF-300 have been synthesized and characterized by the Yaghi group in 2009 as a 5-fold interpenetrated diamond structure ( dia-c5 topology). We found that adding an ageing process prior to the reported synthetic procedure afforded the formation of an inter-penetration isomer, dia-c7 COF-300. The 7-fold interpenetrated diamond structure of this new isomer was identified by powder X-ray diffraction (PXRD) and rotation electron diffraction (RED) analyses...
May 21, 2018: Journal of the American Chemical Society
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