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https://www.readbyqxmd.com/read/28922664/patchy-particles-made-by-colloidal-fusion
#1
Zhe Gong, Theodore Hueckel, Gi-Ra Yi, Stefano Sacanna
Patches on the surfaces of colloidal particles provide directional information that enables the self-assembly of the particles into higher-order structures. Although computational tools can make quantitative predictions and can generate design rules that link the patch motif of a particle to its internal microstructure and to the emergent properties of the self-assembled materials, the experimental realization of model systems of particles with surface patches (or 'patchy' particles) remains a challenge. Synthetic patchy colloidal particles are often poor geometric approximations of the digital building blocks used in simulations and can only rarely be manufactured in sufficiently high yields to be routinely used as experimental model systems...
September 18, 2017: Nature
https://www.readbyqxmd.com/read/28922378/relationships-of-orientation-discrimination-threshold-and-visual-acuity-with-macular-lesions-in-age-related-macular-degeneration
#2
Haojie Fu, Bin Zhang, Jianliang Tong, Harold Bedell, Hecheng Zhang, Yating Yang, Chaochao Nie, Yingdong Luo, Xiaoling Liu
PURPOSE: To measure visual acuity and metamorphopsia in patients with age-related macular degeneration (AMD) and to explore their relationship with macular lesions. METHODS: In this cross-sectional study, a total of 32 normal subjects (32 eyes) and 35 AMD patients (35 eyes) were recruited. They were categorized into 4 groups: normal, dry AMD, non-active wet AMD, and active wet AMD. Best-corrected visual acuity (BCVA) was measured using the Early Treatment Diabetic Retinopathy Study protocol...
2017: PloS One
https://www.readbyqxmd.com/read/28922013/identification-of-a-practical-and-reliable-method-for-the-evaluation-of-litter-moisture-in-turkey-production
#3
L J Vinco, S Giacomelli, L Campana, M Chiari, N Vitale, G Lombardi, T Veldkamp, P M Hocking
1. An experiment was conducted to compare 5 different methods for the evaluation of litter moisture. 2. For litter collection and assessment, 55 farms were selected, one shed from each farm was inspected and 9 points were identified within each shed. 3. For each device, used for the evaluation of litter moisture, mean and standard deviation of wetness measures per collection point were assessed. 4. The reliability and overall consistency between the 5 instruments used to measure wetness were high (α =0.72)...
September 18, 2017: British Poultry Science
https://www.readbyqxmd.com/read/28921609/biomarkers-for-equine-joint-injury-and-osteoarthritis
#4
REVIEW
C Wayne McIlwraith, Christopher E Kawcak, David D Frisbie, Christopher B Little, Peter D Clegg, Mandy J Peffers, Morten A Karsdal, Stina Ekman, Sheila Laverty, Richard A Slayden, Linda J Sandell, L Stefan Lohmander, Virginia B Kraus
We report the results of a symposium aimed at identifying validated biomarkers that can be used to complement clinical observations for diagnosis and prognosis of joint injury leading to equine osteoarthritis (OA). Biomarkers might also predict pre-fracture change that could lead to catastrophic bone failure in equine athletes. The workshop was attended by leading scientists in the fields of equine and human musculoskeletal biomarkers to enable cross-disciplinary exchange and improve knowledge in both. Detailed proceedings with strategic planning was written, added to, edited and referenced to develop this manuscript...
September 16, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28921399/artesunate-inhibits-renal-ischemia-reperfusion-stimulated-lung-inflammation-in-rats-by-activating-ho-1-pathway
#5
Zhaohui Liu, Junjie Zhang, Shitong Li, Jihong Jiang
Artesunate (AS), a semi-synthetic derivative of Artemisia, has been shown to exert a wide range of pharmacological effects, such as anti-inflammatory and antioxidant functions. However, the protective functions of AS on renal ischemia reperfusion injury (RIR)-stimulated lung inflammation remain unclear. In this research, acute lung injury (ALI) was stimulated by renal ischemia reperfusion injury (RIR). AS (15 mg/kg) was intraperitoneal administrated to rat 1 h before RIR stimulation. Serum and pulmonary NO, MDA, IL-6, MIP-2, and PGE2 levels, arterial blood gas and biochemistry, lung wet/dry weight ratio and MPO activity, total cell number and protein concentration in BALF, tissue histology, and NF-κB expression were determined...
September 18, 2017: Inflammation
https://www.readbyqxmd.com/read/28920776/establishing-normal-fecal-flora-in-wild-australian-passerine-birds-by-use-of-the-fecal-gram-stain
#6
Benjamin Latham, Alan Leishman, John Martin, David Phalen
The purpose of this study was to determine the normal fecal bacterial and fungal flora and parasite prevalence in wild passerine birds found at the Australian Botanic Garden (Mount Annan, New South Wales). Wild passerine birds (n = 186) from 28 species were captured with mist nets. Fecal Gram stains (n = 155) were made from 26 species and analyzed for bacterial density, Gram stain morphology, and the presence of yeast. Fecal wet preparations (n = 139) were made from 24 passerine species and were analyzed for parasites...
September 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28920673/work-function-control-of-germanium-through-carborane-carboxylic-acid-surface-passivation
#7
Andrew C Serino, Mary E Anderson, Liban M A Saleh, Rafal Miroslaw Dziedzic, Harrison Mills, Liv K Heidenreich, Alexander M Spokoyny, Paul S Weiss
Self-assembled monolayers (SAMs) of carborane isomers with different dipole moments passivate germanium to modulate surface work function while maintaining chemical environment and surface energy. To identify head groups capable of monolayer formation on germanium surfaces, we studied thiol-, hydroxyl-, and carboxyl-terminated carboranes. These films were successfully formed with carboxylic acid head groups instead of the archetypal thiol, suggesting that the carborane cluster significantly affects head group reactivity...
September 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28919716/palatability-and-physical-properties-of-potassium-binding-resin-rdx7675-comparison-with-sodium-polystyrene-sulfonate
#8
Vanessa Zann, John McDermott, Jeffrey W Jacobs, James P Davidson, Fangling Lin, Paul Korner, Robert C Blanks, David P Rosenbaum
BACKGROUND: Hyperkalemia is a potentially life-threatening condition that patients with heart failure or chronic kidney disease, especially those taking renin-angiotensin-aldosterone system inhibitors, are at high risk of developing. Sodium polystyrene sulfonate (SPS), a current treatment, binds potassium within the gastrointestinal tract to reduce potassium absorption. However, poor palatability limits its long-term use. RDX7675, a novel potassium binder in development for the treatment of hyperkalemia, is a calcium salt of a reengineered polystyrene sulfonate-based resin designed to have enhanced palatability...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28919493/heat-stress-incident-prevalence-and-tennis-matchplay-performance-at-the-australian-open
#9
Matthew T Smith, Machar Reid, Stephanie Kovalchik, Tim O Woods, Rob Duffield
OBJECTIVES: To examine the association of wet bulb globe temperature (WBGT) with the occurrence of heat-related incidents and changes in behavioural and matchplay characteristics in men's Grand Slam tennis. DESIGN: On-court calls for trainers, doctors, cooling devices and water, post-match medical consults and matchplay characteristic data were collected from 360 Australian Open matches (first 4 rounds 2014-2016). METHODS: Data were referenced against estimated WBGT and categorised into standard zones...
September 6, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28919372/biological-applications-of-kinetics-of-wetting-and-spreading
#10
REVIEW
G Ahmed, O Arjmandi Tash, J Cook, A Trybala, V Starov
Wetting and spreading kinetics of biological fluids has gained a substantial interest recently. The importance of these fluids in our lives has driven the pace of publications. Globally scientists have ever growing interest in understanding wetting phenomena due to its vast applications in biological fluids. It is impractical to review extremely large number of publications in the field of kinetics of complex biological fluids and cosmetic solutions on diverse surfaces. Therefore, biological and cosmetic applications of wetting and spreading dynamics are considered in the following areas: (i) Spreading of Newtonian liquids in the case of non-porous and porous substrates...
August 18, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28919336/staphylococcus-aureus-dry-surface-biofilms-are-more-resistant-to-heat-treatment-than-traditional-hydrated-biofilms
#11
A Almatroudi, S Tahir, H Hu, D Chowdhury, I B Gosbell, S O Jensen, G S Whiteley, A K Deva, T Glasbey, K Vickery
BACKGROUND: The importance of biofilms to clinical practice is being increasingly realised. Biofilm tolerance to antibiotics is well described but limited work has been conducted on the efficacy of heat disinfection and sterilization against biofilms. AIM: To test the susceptibility of planktonic, hydrated biofilm and dry-surface biofilm forms of Staphylococcus aureus, to dry heat and wet heat treatments. METHODS: S. aureus was grown as both hydrated biofilm and dry-surface biofilm in the CDC biofilm generator...
September 14, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28918976/validation-of-a-portuguese-version-of-the-health-related-quality-of-life-measure-for-active-chronic-otitis-media-comq-12
#12
Anna Carolina Oliveira Fonseca, Pedro Ramos, Fernando A Balsalobre, Edson L Freitas, John S Phillips, Matthew W Yung, Ricardo F Bento
INTRODUCTION: Measuring the impact on quality of life, especially after the beginning of the treatment, is becoming increasingly important in healthcare. OBJECTIVE: The aim of this study was to translate the Chronic Otitis Media Questionnaire-12 (COMQ-12) into Portuguese language and validate this version in a group of patients with chronic otitis media. METHODS: The Portuguese version of COMQ-12 was obtained by translation and back translation...
September 1, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28918027/adeno-associated-viral-vector-mediated-mtor-inhibition-by-short-hairpin-rna-suppresses-laser-induced-choroidal-neovascularization
#13
Tae Kwann Park, Si Hyung Lee, Jun Sub Choi, Seung Kwan Nah, Hee Jong Kim, Ha Yan Park, Heuiran Lee, Steven Hyun Seung Lee, Keerang Park
Choroidal neovascularization (CNV) is the defining characteristic feature of the wet subtype of age-related macular degeneration (AMD) and may result in irreversible blindness. Based on anti-vascular endothelial growth factor (anti-VEGF), the current therapeutic approaches to CNV are fraught with difficulties, and mammalian target of rapamycin (mTOR) has recently been proposed as a possible therapeutic target, although few studies have been conducted. Here, we show that a recombinant adeno-associated virus-delivered mTOR-inhibiting short hairpin RNA (rAAV-mTOR shRNA), which blocks the activity of both mTOR complex 1 and 2, represents a promising therapeutic approach for the treatment of CNV...
September 15, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28917939/preparation-and-characterization-of-gelatin-%C3%AE-tcp-sf-biocomposite-scaffold-for-bone-tissue-regeneration
#14
JunTae Huh, JiUn Lee, WonJin Kim, Miji Yeo, GeunHyung Kim
In this study, we suggest a new biocomposite scaffold composed of gelatin/α-TCP (tricalcium phosphate)/SF (silk-fibroin) (GTS) which has enhanced mechanical strength and high level of cellular activity. To fabricate GTS scaffold, a temperature-controlled 3D printing process was used and appropriate printing conditions were selected based on rheological data. To show the feasibility as a biomedical scaffold for bone tissue regeneration, the various physical and biological results, using MG63 (osteoblast-like cells), of the GTS scaffold were compared with those of a pure gelatin (G) and gelatin/α-TCP (GT) composite scaffold...
September 13, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28917876/preparation-of-chitosan-hydroxyapatite-composite-mono-fiber-using-coagulation-method-and-their-mechanical-properties
#15
Takuma Okada, Yuta Nobunaga, Toshiisa Konishi, Tomohiko Yoshioka, Satoshi Hayakawa, Maria Ascensão Lopes, Toshiki Miyazaki, Yuki Shirosaki
Autograft has been carried out for anterior cruciate ligament (ACL) reconstruction surgery. However, it has negative aspect because patients lose their healthy ligaments from other part. We focus on a chitosan-hydroxyapatite (HAp) composite fiber as a scaffold of ligament regeneration. Chitosan- HAp composite fiber was made by using coagulation method. Chitosan-NaH2PO4 solution was coagulated with coagulation bath including calcium ion to get the mono-fiber and then treated with sodium hydroxide solution to form HAp in fiber matrix...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28917798/perception-of-olive-oils-sensory-defects-using-a-potentiometric-taste-device
#16
Ana C A Veloso, Lucas M Silva, Nuno Rodrigues, Ligia P G Rebello, Luís G Dias, José A Pereira, António M Peres
The capability of perceiving olive oils sensory defects and intensities plays a key role on olive oils quality grade classification since olive oils can only be classified as extra-virgin if no defect can be perceived by a human trained sensory panel. Otherwise, olive oils may be classified as virgin or lampante depending on the median intensity of the defect predominantly perceived and on the physicochemical levels. However, sensory analysis is time-consuming and requires an official sensory panel, which can only evaluate a low number of samples per day...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28917796/simultaneous-phase-inversion-and-imprinting-based-sensor-for-highly-sensitive-and-selective-detection-of-bisphenol-a
#17
Qian Yang, Xiaqing Wu, Hailong Peng, Longwen Fu, Xingliang Song, Jinhua Li, Hua Xiong, Lingxin Chen
A novel recognition element of molecularly imprinted films (MIFs) was synthesized by wet phase inversion (WPI) on the surface of Ti/TiO2 electrode for highly selective and sensitive electrochemical detection of bisphenol A (BPA). The Ti/TiO2/MIFs sensor was constructed by casting the precursor poly(acrylonitrile-co-acrylic acid) (p(AN-co-AA)) in dimethyl sulfoxide containing template molecule BPA onto the electrode and then immersing into water, resulting in simultaneous p(AN-co-AA) precipitation and BPA imprinting via the facile WPI...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28917262/determination-of-several-element-levels-in-hardaliye-beverages-using-flame-atomic-absorption-spectrometry-after-ultrasound-probe-extraction
#18
Dilek Bakircioglu, Nukte Topraksever, Yasemin Bakircioglu Kurtulus
In the present study, concentrations of calcium (Ca), copper (Cu), magnesium (Mg), manganese (Mn), sodium (Na), and zinc (Zn) in hardaliye samples produced in Turkey were determined by flame atomic absorption spectrometry after ultrasound probe extraction (UPE), microwave-assisted extraction (MAE), and wet extraction procedures. At present, there is limited work in the literature on UPE for the determination of trace elements in beverage samples. Our single-correlation analysis showed that the elements studied with the UPE method in hardaliye were strongly correlated with the MAE procedure...
September 1, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28917213/hydraulic-connectivity-and-evaporation-control-the-water-quality-and-sources-of-chromophoric-dissolved-organic-matter-in-lake-bosten-in-arid-northwest-china
#19
Lei Zhou, Yongqiang Zhou, Yang Hu, Jian Cai, Chengrong Bai, Keqiang Shao, Guang Gao, Yunlin Zhang, Erik Jeppesen, Xiangming Tang
Lake Bosten is the largest oligosaline lake in arid northwestern China, and water from its tributaries and evaporation control the water balance of the lake. In this study, water quality and chromophoric dissolved organic matter (CDOM) absorption and fluorescence were investigated in different seasons to elucidate how hydraulic connectivity and evaporation may affect the water quality and variability of CDOM in the lake. Mean suspended solids and turbidity were significantly higher in the upstream tributaries than in the lake, the difference being notably more pronounced in the wet than in the dry season...
September 6, 2017: Chemosphere
https://www.readbyqxmd.com/read/28917149/a-comparison-study-between-electrospun-polycaprolactone-and-piezoelectric-poly-3-hydroxybutyrate-co-3-hydroxyvalerate-scaffolds-for-bone-tissue-engineering
#20
Svetlana N Gorodzha, Albert R Muslimov, Dina S Syromotina, Alexander S Timin, Nikolai Y Tcvetkov, Kirill V Lepik, Aleksandra V Petrova, Maria A Surmeneva, Dmitry A Gorin, Gleb B Sukhorukov, Roman A Surmenev
In this study, bone scaffolds composed of polycaprolactone (PCL), piezoelectric poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and a combination of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and silicate containing hydroxyapatite (PHBV-SiHA) were successfully fabricated by a conventional electrospinning process. The morphological, chemical, wetting and biological properties of the scaffolds were examined. All fabricated scaffolds are composed of randomly oriented fibres with diameters from 800nm to 12μm...
September 5, 2017: Colloids and Surfaces. B, Biointerfaces
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