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https://www.readbyqxmd.com/read/29352640/recent-advancements-in-bioremediation-of-dye-current-status-and-challenges
#1
REVIEW
Kumar Vikrant, Balendu Shekhar Giri, Nadeem Raza, Kangkan Roy, Ki-Hyun Kim, Birendra Nath Rai, Ram Sharan Singh
The rampant industrialization and unchecked growth of modern textile production facilities coupled with the lack of proper treatment facilities have proliferated the discharge of effluents enriched with toxic, baleful, and carcinogenic pollutants including dyes, heavy metals, volatile organic compounds, odorants, and other hazardous materials. Therefore, the development of cost-effective and efficient control measures against such pollution is imperative to safeguard ecosystems and natural resources. In this regard, recent advances in biotechnology and microbiology have propelled bioremediation as a prospective alternative to traditional treatment methods...
January 8, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29351215/multi-sensor-data-integration-using-deep-learning-for-characterization-of-defects-in-steel-elements
#2
Grzegorz Psuj
Nowadays, there is a strong demand for inspection systems integrating both high sensitivity under various testing conditions and advanced processing allowing automatic identification of the examined object state and detection of threats. This paper presents the possibility of utilization of a magnetic multi-sensor matrix transducer for characterization of defected areas in steel elements and a deep learning based algorithm for integration of data and final identification of the object state. The transducer allows sensing of a magnetic vector in a single location in different directions...
January 19, 2018: Sensors
https://www.readbyqxmd.com/read/29350931/multiscale-and-multistep-ordering-of-flow-induced-nucleation-of-polymers
#3
Kunpeng Cui, Zhe Ma, Nan Tian, Fengmei Su, Dong Liu, Liangbin Li
Flow-induced crystallization (FIC) is a typical nonequilibrium phase transition and a core industry subject for the largest group of commercially useful polymeric materials: semicrystalline polymers. A fundamental understanding of FIC can benefit the research of nonequilibrium ordering in matter systems and help to tailor the ultimate properties of polymeric materials. Concerning the crystallization process, flow can accelerate the kinetics by orders of magnitude and induce the formation of oriented crystallites like shish-kebab, which are associated with the major influences of flow on nucleation, that is, raised nucleation density and oriented nuclei...
January 19, 2018: Chemical Reviews
https://www.readbyqxmd.com/read/29350692/control-and-optimisation-of-fluid-flow-in-glaucoma-drainage-device-surgery
#4
Kin Sheng Lim
Avoidance of hypotony in the early post-operative phase following glaucoma drainage device surgery is paramount, if serious complications are to be avoided. Current strategies of preventing early hypotony are either a valve mechanism, as those found in Ahmed Glaucoma Valve or flow restrictor as used in Baerveldt or Molteno implants. The Ahmed glaucoma valve has a pre-tensioned valve which opens and closes at the pre-determined level of intra-ocular pressure. Although the opening and closing pressure can be slightly inconsistent, coinciding with the change of material used in the plate construction, the reliability appears to have improved in recent years...
January 19, 2018: Eye
https://www.readbyqxmd.com/read/29350690/fluidics-and-rheology-in-phaco-surgery-what-matters-and-what-is-the-hype
#5
L Benjamin
Rheology can be defined as the study of materials flow behaviour under applied deformation forces (stresses). Inside the eye during cataract surgery, transient or reversible deformation (elasticity) and permanent or irreversible deformation (flow) can both apply. Although the fluidics of modern phaco machines is an important part of this talk, there are a number of issues relating to flow and fluids in the eye during cataract surgery, which are unrelated to the machine, which can hinder or help the operating surgeon in removing a cataract...
January 19, 2018: Eye
https://www.readbyqxmd.com/read/29350034/probing-the-complexities-of-structural-changes-in-layered-oxide-cathode-materials-for-li-ion-batteries-during-fast-charge-discharge-cycling-and-heating
#6
Enyuan Hu, Xuelong Wang, Xiqian Yu, Xiao-Qing Yang
The rechargeable lithium-ion battery (LIB) is the most promising energy storage system to power electric vehicles with high energy density and long cycling life. However, in order to meet customers' demands for fast charging, the power performances of current LIBs need to be improved. From the cathode aspect, layer-structured cathode materials are widely used in today's market and will continue to play important roles in the near future. The high rate capability of layered cathode materials during charging and discharging is critical to the power performance of the whole cell and the thermal stability is closely related to the safety issues...
January 19, 2018: Accounts of Chemical Research
https://www.readbyqxmd.com/read/29349880/beyond-the-realist-turn-a-socio-material-analysis-of-heart-failure-self-care
#7
Allan McDougall, Elizabeth Anne Kinsella, Mark Goldszmidt, Karen Harkness, Patricia Strachan, Lorelei Lingard
For patients living with chronic illnesses, self-care has been linked with positive outcomes such as decreased hospitalisation, longer lifespan, and improved quality of life. However, despite calls for more and better self-care interventions, behaviour change trials have repeatedly fallen short on demonstrating effectiveness. The literature on heart failure (HF) stands as a case in point, and a growing body of HF studies advocate realist approaches to self-care research and policymaking. We label this trend the 'realist turn' in HF self-care...
January 2018: Sociology of Health & Illness
https://www.readbyqxmd.com/read/29349877/engineered-and-laser-processed-chitosan-biopolymers-for-sustainable-and-biodegradable-triboelectric-power-generation
#8
Ruoxing Wang, Shengjie Gao, Zhen Yang, Yule Li, Weinong Chen, Benxin Wu, Wenzhuo Wu
Recent advances achieved in triboelectric nanogenerators (TENG) focus on boosting power generation and conversion efficiency. Nevertheless, obstacles concerning economical and biocompatible utilization of TENGs continue to prevail. Being an abundant natural biopolymer from marine crustacean shells, chitosan enables exciting opportunities for low-cost, biodegradable TENG applications in related fields. Here, the development of biodegradable and flexible TENGs based on chitosan is presented for the first time...
January 19, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29349676/environment-friendly-synthesis-of-trace-element-zn-sr-and-f-codoping-hydroxyapatite-with-non-cytotoxicity-and-improved-osteoblast-proliferation-and-differentiation
#9
Shengjie Xiao, Ming Wang, Liping Wang, Yingchun Zhu
Hydroxyapatite (HAp, Ca10[PO4]6[OH]2) doped with numerous trace elements possesses sensational biochemical effects in natural bones. To study the biochemical function of Zn, Sr, and F elements, a series of neoteric HAp biomaterials with Zn, Sr, and F concentrations close to natural bones are firstly synthesized by one-pot hydrothermal method. These materials are characterized through powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscope (SEM). All the synthesized materials are HAp phase...
January 18, 2018: Biological Trace Element Research
https://www.readbyqxmd.com/read/29348551/designable-and-dynamic-single-walled-stiff-nanotubes-assembled-from-sequence-defined-peptoids
#10
Haibao Jin, Yan-Huai Ding, Mingming Wang, Yang Song, Zhihao Liao, Christina J Newcomb, Xuepeng Wu, Xian-Qiong Tang, Zheng Li, Yuehe Lin, Feng Yan, Tengyue Jian, Peng Mu, Chun-Long Chen
Despite recent advances in the assembly of organic nanotubes, conferral of sequence-defined engineering and dynamic response characteristics to the tubules remains a challenge. Here we report a new family of highly designable and dynamic nanotubes assembled from sequence-defined peptoids through a unique "rolling-up and closure of nanosheet" mechanism. During the assembly process, amorphous spherical particles of amphiphilic peptoid oligomers crystallize to form well-defined nanosheets before folding to form single-walled nanotubes...
January 18, 2018: Nature Communications
https://www.readbyqxmd.com/read/29348539/characterization-of-a-novel-tectivirus-phage-toil-and-its-potential-as-an-agent-for-biolipid-extraction
#11
Jason J Gill, Baixin Wang, Emily Sestak, Ryland Young, Kung-Hui Chu
The oleaginous bacterium Rhodococcus opacus PD630 is metabolically diverse and can be cultivated on various renewable resources to serve as a sustainable triacylglycerol (TAG) feedstock for biodiesel production. Current methods for TAG extraction are costly, but infection of cultures by lytic bacteriophages (phages) may be a viable approach for achieving release of intracellular lipid from oleaginous bacteria such as R. opacus. This study reports the novel tectiviral phage Toil capable of releasing intracellular contents including a fluorescent protein marker and TAGs into the supernatant after phage infection of R...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29347716/inferring-low-dimensional-microstructure-representations-using-convolutional-neural-networks
#12
Nicholas Lubbers, Turab Lookman, Kipton Barros
We apply recent advances in machine learning and computer vision to a central problem in materials informatics: the statistical representation of microstructural images. We use activations in a pretrained convolutional neural network to provide a high-dimensional characterization of a set of synthetic microstructural images. Next, we use manifold learning to obtain a low-dimensional embedding of this statistical characterization. We show that the low-dimensional embedding extracts the parameters used to generate the images...
November 2017: Physical Review. E
https://www.readbyqxmd.com/read/29346719/a-tunable-molten-salt-route-for-scalable-synthesis-of-ultrathin-amorphous-carbon-nanosheets-as-high-performance-anode-materials-for-lithium-ion-batteries
#13
Yixian Wang, Wei Tian, Luhai Wang, Haoran Zhang, Jialiang Liu, Tingyue Peng, Lei Pan, Xiaobo Wang, Mingbo Wu
Amorphous carbon is regarded as a promising alternative to commercial graphite as the lithium-ion battery anode due to its capability to reversibly store more lithium ions. However, the structural disorder with a large number of defects can lead to low electrical conductivity of the amorphous carbon, thus limiting its application for high power output. Herein, ultrathin amorphous carbon nanosheets were prepared from petroleum asphalt through tuning the carbonization temperature in a molten-salt medium. The amorphous nanostructure with expanded carbon interlayer spacing can provide substantial active sites for lithium storage while the two-dimensional (2D) morphology can facilitate fast electrical conductivity...
January 18, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29346275/a-review-on-recent-advances-in-stabilizing-peptides-proteins-upon-fabrication-in-hydrogels-from-biodegradable-polymers
#14
REVIEW
Faisal Raza, Hajra Zafar, Ying Zhu, Yuan Ren, Aftab -Ullah, Asif Ullah Khan, Xinyi He, Han Han, Md Aquib, Kofi Oti Boakye-Yiadom, Liang Ge
Hydrogels evolved as an outstanding carrier material for local and controlled drug delivery that tend to overcome the shortcomings of old conventional dosage forms for small drugs (NSAIDS) and large peptides and proteins. The aqueous swellable and crosslinked polymeric network structure of hydrogels is composed of various natural, synthetic and semisynthetic biodegradable polymers. Hydrogels have remarkable properties of functionality, reversibility, sterilizability, and biocompatibility. All these dynamic properties of hydrogels have increased the interest in their use as a carrier for peptides and proteins to be released slowly in a sustained manner...
January 18, 2018: Pharmaceutics
https://www.readbyqxmd.com/read/29344589/magnetism-tuning-strategies-for-graphene-oxide-based-on-magnetic-oligoacene-oxide-patches-model
#15
Yanjie Wen, Chia-Liang Yen, Linyin Yan, Hirohiko Kono, Sheng-Hsien Lin, Yong-Chien Ling
Graphene oxide (GO) has wide application potential owing to its 2D structure and diverse modification sites for various targeted uses. The introduction of magnetism into GO structures has further advanced the controllability of the application of GO materials. Herein, the concept of modular design and modeling was applied to tune the magnetism of GO. To obtain desirable magnetic properties, diradical-structured GO patches were formed by the introduction of two functional groups to break the Kekule structure of the benzene ring...
January 18, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29343864/electrochemical-and-friction-characteristics-of-metallic-glass-composites-at-the-microstructural-length-scales
#16
Aditya Ayyagari, Vahid Hasannaeimi, Harpreet Arora, Sundeep Mukherjee
Metallic glass composites represent a unique alloy design strategy comprising of in situ crystalline dendrites in an amorphous matrix to achieve damage tolerance unseen in conventional structural materials. They are promising for a range of advanced applications including spacecraft gears, high-performance sporting goods and bio-implants, all of which demand high surface degradation resistance. Here, we evaluated the phase-specific electrochemical and friction characteristics of a Zr-based metallic glass composite, Zr56...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29343412/implementing-genome-driven-personalized-cardiology-in-clinical-practice
#17
REVIEW
Ares Pasipoularides
Genomics designates the coordinated investigation of a large number of genes in the context of a biological process or disease. It may be long before we attain comprehensive understanding of the genomics of common complex cardiovascular diseases (CVDs) such as inherited cardiomyopathies, valvular diseases, primary arrhythmogenic conditions, congenital heart syndromes, hypercholesterolemia and atherosclerotic heart disease, hypertensive syndromes, and heart failure with preserved/reduced ejection fraction. Nonetheless, as genomics is evolving rapidly, it is constructive to survey now pertinent concepts and breakthroughs...
January 14, 2018: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29342082/lewis-pair-catalysts-in-the-polymerization-of-lactide-and-related-cyclic-esters
#18
REVIEW
Xinlei Li, Changjuan Chen, Jincai Wu
Polyesters, especially poly(lactide) (PLA), are used widely as biodegradable and biocompatible materials, yet their controllable synthesis, especially the stereoselective synthesis of polyesters, is still a challenge. Recently some excellent Lewis pair catalysts for ring-opening polymerization (ROP) of lactide and related cyclic esters have emerged. This review article will highlight the key advances in the ROP catalyzed by Lewis pair compounds with the aim of encouraging the wider application of Lewis pair catalysts in the polymerization of lactide and related cyclic esters...
January 17, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29342043/the-american-otological-society-at-its-sesquicentennial-insights-into-the-society-s-formative-years
#19
Robert K Jackler, Jennifer C Alyono, Albert C Mudry
OBJECTIVE: To elucidate the sequence of events which led to the formation of the American Otological Society (AOS) in 1868 and to examine the lives and contributions of the nine founding members of the Society. METHODS: Study of primary historical documents, biographical material, and previous histories of the AOS. RESULTS: Earlier treatments of the history of the AOS minimally covered the events and personalities from the Society's formative period...
January 16, 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29341816/red-cell-indexes-made-easy-using-an-interactive-animation-do-students-and-their-scores-concur
#20
Upasana Kachroo, Elizabeth Vinod, Sivakumar Balasubramanian, Jesi W, Neetu Prince
A good understanding of red cell indexes can aid medical students in a considerable manner, serving as a basis to unravel both concepts in red cell physiology and abnormalities associated with the same. In this study, we tried to assess whether an interactive animation was helpful in improving student comprehension and understanding of red cell indexes compared with conventional classroom teaching. Eighty-eight first-year MBBS students participated, of which 44 were assigned to group A and 44 were assigned to group B after randomization...
March 1, 2018: Advances in Physiology Education
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