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https://www.readbyqxmd.com/read/29352175/magnetic-vortices-as-efficient-nano-heaters-in-magnetic-nanoparticle-hyperthermia
#1
N A Usov, M S Nesmeyanov, V P Tarasov
Magnetic vortices existing in soft magnetic nanoparticles with sizes larger than the single-domain diameter can be efficient nano-heaters in biomedical applications. Using micromagnetic numerical simulation we prove that in the optimal range of particle diameters the magnetization reversal of the vortices in spherical iron and magnetite nanoparticles is possible for moderate amplitudes of external alternating magnetic field, H0 < 100 Oe. In contrast to the case of superparamagnetic nanoparticles, for the vortex configuration the hysteresis loop area increases as a function of frequency...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29351821/reliability-of-the-american-academy-of-sleep-medicine-rules-for-assessing-sleep-depth-in-clinical-practice
#2
Magdy Younes, Samuel T Kuna, Allan I Pack, James K Walsh, Clete A Kushida, Bethany Staley, Grace W Pien
STUDY OBJECTIVES: The American Academy of Sleep Medicine has published manuals for scoring polysomnograms that recommend time spent in non-rapid eye movement sleep stages (stage N1, N2, and N3 sleep) be reported. Given the well-established large interrater variability in scoring stage N1 and N3 sleep, we determined the range of time in stage N1 and N3 sleep scored by a large number of technologists when compared to reasonably estimated true values. METHODS: Polysomnograms of 70 females were scored by 10 highly trained sleep technologists, two each from five different academic sleep laboratories...
January 16, 2018: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/29349608/comparative-transcriptomics-uncovers-differences-in-photoautotrophic-versus-photoheterotrophic-modes-of-nutrition-in-relation-to-secondary-metabolites-biosynthesis-in-swertia-chirayita
#3
Tarun Pal, Jibesh Kumar Padhan, Pawan Kumar, Hemant Sood, Rajinder S Chauhan
Swertia chirayita is a high-value medicinal herb exhibiting antidiabetic, hepatoprotective, anticancer, antiediematogenic and antipyretic properties. Scarcity of its plant material has necessitated in vitro production of therapeutic metabolites; however, their yields were low compared to field grown plants. Possible reasons for this could be differences in physiological and biochemical processes between plants grown in photoautotrophic versus photoheterotrophic modes of nutrition. Comparative transcriptomes of S...
January 18, 2018: Molecular Biology Reports
https://www.readbyqxmd.com/read/29349569/xyla-and-xylb-overexpression-as-a-successful-strategy-for-improving-xylose-utilization-and-poly-3-hydroxybutyrate-production-in-burkholderia-sacchari
#4
Linda P Guamán, Edmar R Oliveira-Filho, Carlos Barba-Ostria, José G C Gomez, Marilda K Taciro, Luiziana Ferreira da Silva
Despite the versatility and many advantages of polyhydroxyalkanoates as petroleum-based plastic substitutes, their higher production cost compared to petroleum-based polymers has historically limited their large-scale production. One appealing approach to reducing production costs is to employ less expensive, renewable feedstocks. Xylose, for example is an abundant and inexpensive carbon source derived from hemicellulosic residues abundant in agro-industrial waste (sugarcane bagasse hemicellulosic hydrolysates)...
January 19, 2018: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/29348924/mortality-and-hospitalizations-in-intensive-dialysis-a-systematic-review-and-meta-analysis
#5
Anna Mathew, Jody-Ann McLeggon, Nirav Mehta, Samuel Leung, Valerie Barta, Thomas McGinn, Gihad Nesrallah
Background: Survival and hospitalization are critically important outcomes considered when choosing between intensive hemodialysis (HD), conventional HD, and peritoneal dialysis (PD). However, the comparative effectiveness of these modalities is unclear. Objective: We had the following aims: (1) to compare the association of mortality and hospitalization in patients undergoing intensive HD, compared with conventional HD or PD and (2) to appraise the methodological quality of the supporting evidence...
2018: Canadian Journal of Kidney Health and Disease
https://www.readbyqxmd.com/read/29347783/subjamming-transition-in-binary-sphere-mixtures
#6
Ishan Prasad, Christian Santangelo, Gregory Grason
We study the influence of particle-size asymmetry on structural evolution of randomly jammed binary sphere mixtures with varying large-sphere and small-sphere composition. Simulations of jammed packings are used to assess the transition from large-sphere dominant to small-sphere dominant mixtures. For weakly asymmetric particle sizes, packing properties evolve smoothly, but not monotonically, with increasing small-sphere composition, f. Our simulations reveal that at high values of ratio α of large- to small-sphere radii (α≥α_{c}≈5...
November 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347777/power-output-for-a-nonlinear-brownian-machine
#7
Lucianno A C A Defaveri, Welles A M Morgado, Sílvio M Duarte Queirós
We propose a method that makes use of the nonlinear properties of some hypothetical microscopic solid material as the working substance for a microscopic machine. The protocols used are simple (step and elliptic) and allow us to obtain the work and heat exchanged between machine and reservoirs. We calculate the work for a nonlinear single-particle machine that can be treated perturbingly. We obtain the instantaneous work and heat for the machine undergoing cycles that mimic the Carnot and multireservoir protocols...
November 2017: Physical Review. E
https://www.readbyqxmd.com/read/29345325/a-new-retrograde-transillumination-technique-for-videolaryngoscopic-tracheal-intubation
#8
P Biro, E Fried, M Schlaepfer, M S Kristensen
This single-centre, prospective trial was designed to assess the efficacy of a new retrograde transillumination device called the 'Infrared Red Intubation System' (IRRIS) to aid videolaryngoscopic tracheal intubation. We included 40 adult patients, who were undergoing elective urological surgery under general anaesthesia. We assessed the ability to differentiate the transilluminated glottis from other structures and found a median (IQR [range]) larynx recognition time of 8 (5-14 [3-28]) s. The difference in laryngeal visibility on the screen between the deactivated vs...
January 18, 2018: Anaesthesia
https://www.readbyqxmd.com/read/29344754/green-and-sustainable-separation-of-natural-products-from-agro-industrial-waste-challenges-potentialities-and-perspectives-on-emerging-approaches
#9
REVIEW
Vânia G Zuin, Luize Z Ramin
New generations of biorefinery combine innovative biomass waste resources from different origins, chemical extraction and/or synthesis of biomaterials, biofuels, and bioenergy via green and sustainable processes. From the very beginning, identifying and evaluating all potentially high value-added chemicals that could be removed from available renewable feedstocks requires robust, efficient, selective, reproducible, and benign analytical approaches. With this in mind, green and sustainable separation of natural products from agro-industrial waste is clearly attractive considering both socio-environmental and economic aspects...
January 17, 2018: Topics in Current Chemistry (Journal)
https://www.readbyqxmd.com/read/29344360/validity-reliability-and-norwegian-adaptation-of-the-stroke-specific-quality-of-life-ss-qol-scale
#10
Synne Garder Pedersen, Guri Anita Heiberg, Jørgen Feldbæk Nielsen, Oddgeir Friborg, Henriette Holm Stabel, Audny Anke, Cathrine Arntzen
Background: There is a paucity of stroke-specific instruments to assess health-related quality of life in the Norwegian language. The objective was to examine the validity and reliability of a Norwegian version of the 12-domain Stroke-Specific Quality of Life scale. Methods: A total of 125 stroke survivors were prospectively recruited. Questionnaires were administered at 3 months; 36 test-retests were performed at 12 months post stroke. The translation was conducted according to guidelines...
2018: SAGE Open Medicine
https://www.readbyqxmd.com/read/29342096/high-resolution-lipidomics-of-the-early-life-stages-of-the-red-seaweed-porphyra-dioica
#11
Elisabete da Costa, Vitor Azevedo, Tânia Melo, Andreia M Rego, Dmitry V Evtuguin, Pedro Domingues, Ricardo Calado, Rui Pereira, Maria H Abreu, Maria R Domingues
Porphyra dioica is a commercial seaweed consumed all over the world, mostly in the shape of nori sheets used for "sushi" preparation. It is a well-known part of the Asian diet with health benefits, which have been associated, among others, to the high levels of n-3 and n-6 fatty acids in this red alga. However, other highly valued lipids of Porphyra are polar lipids that remain largely undescribed and can have both nutritional value and bioactivity, thus could contribute to the valorization of this seaweed...
January 17, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29341056/-researching-crisis-plans-in-long-term-mental-health-care-more-complicated-than-expected
#12
J Fockens, Chr Boumans, D Postulart
BACKGROUND Crisis plans are highly valued because they can help to reduce the number of persons subjected to compulsory treatment in mental health care. The evidence however that crisis plans are effective is scarce, partly due to insufficient implementation by professionals.<br/> AIM: To assess the fidelity, relevance and applicability of crisis plans and to estimate to what extent such plans are appreciated by those working in long-term care.<br/> METHOD: Semi-structured interview with patients and nurses...
2018: Tijdschrift Voor Psychiatrie
https://www.readbyqxmd.com/read/29339335/potential-impacts-of-offshore-oil-spills-on-polar-bears-in-the-chukchi-sea
#13
Ryan R Wilson, Craig Perham, Deborah P French-McCay, Richard Balouskus
Sea ice decline is anticipated to increase human access to the Arctic Ocean allowing for offshore oil and gas development in once inaccessible areas. Given the potential negative consequences of an oil spill on marine wildlife populations in the Arctic, it is important to understand the magnitude of impact a large spill could have on wildlife to inform response planning efforts. In this study we simulated oil spills that released 25,000 barrels of oil for 30 days in autumn originating from two sites in the Chukchi Sea (one in Russia and one in the U...
January 12, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29337601/mango-kernel-fat-fractions-as-potential-healthy-food-ingredients-a-review
#14
Jun Jin, Qingzhe Jin, Casimir C Akoh, Xingguo Wang
Mango kernel fat (MKF) has been reported to have high functional and nutritional potential. However, its application in food industry has not been fully explored or developed. In this review, the chemical compositions, physical properties and potential health benefits of MKF are described. MKF is a unique fat consisting of 28.9-65.0% of 1,3-distearoyl-2-oleoyl-glycerol with excellent oxidative stability index (58.8-85.2 h at 110 °C), making the fat and its fractions suitable for use as high-value added food ingredients such as cocoa butter alternatives, trans-free shortenings, and a source of natural antioxidants (e...
January 16, 2018: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/29335695/synthesis-of-garlic-skin-derived-3d-hierarchical-porous-carbon-for-high-performance-supercapacitors
#15
Qing Zhang, Kuihua Han, Shijie Li, Ming Li, Jinxiao Li, Ke Ren
A three-dimensional hierarchical porous carbon is synthesized via a facile chemical activation route with garlic skin as the precursor and KOH as the activating agent. The as-obtained carbon presents a high specific surface area of 2818 m2 g-1 and a hierarchical porous architecture containing macroporous frameworks, mesopores (2-4 nm), and micropores (0.6-1.0 nm). As the electrode material for a supercapacitor, due to its unique interconnected porous structure, this garlic skin-derived carbon exhibits excellent electrochemical performance and cycling stability...
January 16, 2018: Nanoscale
https://www.readbyqxmd.com/read/29334977/ethnoecology-of-the-interchange-of-wild-and-weedy-plants-and-mushrooms-in-phur%C3%A3-pecha-markets-of-mexico-economic-motives-of-biotic-resources-management
#16
Berenice Farfán-Heredia, Alejandro Casas, Ana I Moreno-Calles, Eduardo García-Frapolli, Aída Castilleja
BACKGROUND: Interactions between societies and nature are regulated by complex systems of beliefs, symbolism, customs, and worldviews (kosmos), ecological knowledge (corpus), and management strategies and practices (praxis), which are constructed as product of experiences and communication of people throughout time. These aspects influence social relations, life strategies, and cultural identity, and all of them in turn influence and are influenced by local and regional patterns of interchange...
January 15, 2018: Journal of Ethnobiology and Ethnomedicine
https://www.readbyqxmd.com/read/29334905/efficacy-comparison-of-multi-phase-ct-and-hepatotropic-contrast-enhanced-mri-in-the-differential-diagnosis-of-focal-nodular-hyperplasia-a-prospective-cohort-study
#17
Tomasz K Nowicki, Karolina Markiet, Ewa Izycka-Swieszewska, Katarzyna Dziadziuszko, Michal Studniarek, Edyta Szurowska
BACKGROUND: Different clinical behaviour influences the importance of differentiating focal nodular hyperplasia (FNH) from other focal liver lesions (FLLs). The aim of this study was to compare the efficacy of contrast-enhanced CT and MRI in the diagnosis of FNH. METHODS: 157 patients with equivocal FLLs detected in ultrasonography subsequently underwent multi-phase CT and MRI with the use of hepatotropic contrast agent (Gd-BOPTA) in a 1.5 T scanner. Examinations were evaluated by three independent readers...
January 15, 2018: BMC Gastroenterology
https://www.readbyqxmd.com/read/29334625/light-quality-affects-flavonoid-production-and-related-gene-expression-in-cyclocarya-paliurus
#18
Yang Liu, Shengzuo Fang, Wanxia Yang, Xulan Shang, Xiangxiang Fu
Understanding the responses of plant growth and secondary metabolites to differential light conditions is very important to optimize cultivation conditions of medicinal woody plants. As a highly valued and multiple function tree species, Cyclocarya paliurus is planted and managed for timber production and medical use. In this study, LED-based light including white light (WL), blue light (BL), red light (RL), and green light (GL) were used to affect leaf biomass production, flavonoid accumulation and related gene expression of one-year C...
January 11, 2018: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29334221/extracellular-enzyme-composition-and-functional-characteristics-of-aspergillus-niger-an-76-induced-by-food-processing-byproducts-and-based-on-integrated-functional-omics
#19
Lin Liu, Weili Gong, Xiaomeng Sun, Guanjun Chen, Lushan Wang
Byproducts of food processing can be utilized for the production of high-value-added enzyme cocktails. In this study, we utilized integrated functional-omics technology to analyze composition and functional characteristics of extracellular enzymes produced by Aspergillus niger grown on food processing byproducts. The results showed that oligosaccharides constituted by arabinose, xylose, and glucose in wheat bran were able to efficiently induce the production of extracellular enzymes of A. niger. Compared with other substrates, wheat bran was more effective at inducing the secretion of β-glucosidases from GH1 and GH3 families, as well as >50% of proteases from A1-family aspartic proteases...
January 15, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29333043/picroside-i-and-picroside-ii-from-tissue-cultures-of-picrorhiza-kurroa
#20
Yamjala Ganeshkumar, Ajmera Ramarao, Ciddi Veeresham
Background: Picrorhiza kurroa (PK) belongs to Scrophulariaceae family and is a representative endemic, medicinal herb, widely distributed throughout the higher altitudes of alpine Himalayas from west to east, between 3000 and 4500 m above mean sea level. Objective: The objective of the present study is to assess the production of picroside I and picroside II from tissue cultures of PK. Materials and Methods: Auxiliary shoot tips of PK were incubated in Murashige and Skoog medium supplemented with indole-3-butyric acid and kinetin phytohormones...
December 2017: Pharmacognosy Research
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