Read by QxMD icon Read

Shape analysis

Qianqian Huang, Yun Hu, Guangying He, Chunjing Lin, Chaohai Wei
A series of anatase TiO2 nanosheets with different percentage of {001} facets ({001}TiO2 ) were synthesized through a hydrothermal route using tetrabutyltitanate as a titanium precursor and HF as a shape controlling agent. The amount of HF exhibits an obvious influence on the structures and activities of TiO2 samples. The adsorbed surface F- ions on the {001} facets of the anatase TiO2 were removed by washing them with NaOH solution. The as-prepared catalysts were characterized by X-ray diffraction, Brunner-Emmet-Teller measurements, ultraviolet-visible diffuse reflectance spectroscopy, scanning electron microscopy, transmission electron microscopy techniques, and X-ray photoelectron spectroscopy analysis...
October 20, 2018: Environmental Science and Pollution Research International
Xiao Chen, Jihua Liu, Yongle Xu, Yanan Wang, Xiaojun Yan
A Gram-negative, motile, rod-shaped, aerobic bacterial strain with tufty polar flagella, JLT1363T , was isolated from the South China Sea. The bacteria formed yellow colonies on rich organic medium. The major cellular fatty acids present in JLT1363T were C18:1 ω7c and/or C18:1 ω6c (36.06%), C17:1 ω6c (17.04%), C14:0 2-OH (9.85%), and C16:0 (8.09%). The genome size was ~3.12 Mbps with a G+C content of 64.9%. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain JLT1363T fell within the genus Erythrobacter...
October 20, 2018: Current Microbiology
Pavla Zedníková Malá, Václav Krajíček, Jana Velemínská
Correlations between facial bony structures and soft facial features are fundamental for facial approximation methods The purpose of this study was to assess the strength of the association between craniofacial shape and the shape of the soft-tissue profile and to determine the extent to which it might be possible to predict the latter from the former. Soft-tissue and skeletal facial profile curves were extracted from 86 lateral head cephalograms of a recent Central European population (52 males and 34 females, aged between 19 and 43 years), divided into five parts, segmented automatically and evaluated using geometric morphometrics...
September 26, 2018: Forensic Science International
Maria Paola Bertone, Haja Wurie, Mohamed Samai, Sophie Witter
BACKGROUND: As performance-based financing (PBF) has been increasingly implemented in low-income countries, a growing literature has developed, assessing its effectiveness and, more recently, focussing on the political dynamics of PBF introduction and implementation. This study contributes to the latter body of literature by exploring decision-making processes on PBF in Sierra Leone during the 2010-2017 period. Sierra Leone presents an interesting case because of the 'start-stop-start' trajectory of PBF...
October 20, 2018: Globalization and Health
James D Pickering, Benjamin Shepperson, Lars Christiansen, Henrik Stapelfeldt
Dimers and trimers of carbonyl sulfide (OCS) molecules embedded in helium nanodroplets are aligned by a linearly polarized 160 ps long moderately intense laser pulse and Coulomb exploded with an intense 40 fs long probe pulse in order to determine their structures. For the dimer, recording of 2D images of OCS+ and S+ ions and covariance analysis of the emission directions of the ions allow us to conclude that the structure is a slipped-parallel shape similar to the structure found for gas phase dimers. For the trimer, the OCS+ ion images and the corresponding covariance maps reveal the presence of a barrel-shaped structure (as in the gas phase) but also other structures not present in the gas phase, most notably a linear chain structure...
October 21, 2018: Journal of Chemical Physics
Nirupama Yechoor, Amir Adeli, Shaheryar Hafeez
INTRODUCTION: Although overall mortality of status epilepticus is high, baseline patient characteristics and co-morbidities may be helpful to predict outcomes and shape treatment decisions. Two previously published scoring systems exist to predict outcomes: the Status Epilepticus Severity Score (STESS) and the Epidemiology-based Mortality Score in Status Epilepticus (EMSE). However, a comparison of the two scores has not previously been completed in an American intensive care unit. We hypothesize that both scores will adequately predict the primary outcome of in-hospital death, but that the EMSE may more accurately predict functional outcomes, and significantly impact treatment decisions for both clinicians and families...
October 3, 2018: Epilepsy Research
Benjamin L S Furman, Utkarsh J Dang, Ben J Evans, G Brian Golding
Whole genome duplication (WGD), the doubling of the nuclear DNA of a species, contributes to biological innovation by creating ge-netic redundancy. One mode of WGD is allopolyploidization, wherein each genome from two ancestral species becomes a 'subgenome' of a polyploid descendant species. The evolutionary trajectory of a dupli-cated gene that arises from WGD is influenced both by natural selec-tion, that may favour redundant, new, or partitioned functions, and by gene silencing (pseudogenization). Here, we explored how these two phenomena varied over time and within allopolyploid genomes in several allotetraploid clawed frog species (Xenopus)...
October 20, 2018: Journal of Evolutionary Biology
Seth Boren, Dennis Slice, Geoffrey Thomas
OBJECTIVES: The mandible can provide valuable information on both the life history and genetic makeup of Archaic human populations. The following analysis tests two hypotheses: (a) that there are significant differences in morphology in mandibular shape between the genders amongst Archaic North American Homo sapiens and (b) that there is a significant difference in variance in mandibular shape between Archaic Windover and Point Hope. MATERIALS AND METHODS: A sample made from mandible specimens taken from both populations is subjected to Principal Component Analyses (PCA)...
October 20, 2018: American Journal of Physical Anthropology
Olga Volotskova, Xuiqi Fang, Michael Keidar, Hersh Chandarana, Indra J Das
PURPOSE: To correlate the dose response and changes in microscopic structures of the radiochromic films exposed to the clinical magnetic field in the range 1.5-3T with standard and flattening filter-free (FFF) photon beams. METHODS: The radiochromic film was cut into 5x5cm2 sheets/samples from one batch. These samples were exposed to a 1.5 Tesla (T) and/or 3T B-field from an MRI scanner using an abdominal sequence for 7 min before and after irradiation with 6 MV and/or 6 MV FFF beams...
October 20, 2018: Medical Physics
Yu Sugawara, Tomoya Ueda, Tsunenari Soeda, Makoto Watanabe, Hiroyuki Okura, Yoshihiko Saito
Percutaneous coronary intervention (PCI) for heavily calcified lesions is challenging because these lesions are resistant to balloon dilatation and stenting. Lacrosse non-slip element (NSE) may have the potential to dilate heavily calcified lesions. We aimed to investigate predictors of successful lesion modification using Lacrosse NSE angioplasty via optical coherence tomography (OCT)-guided PCI. We investigated 32 patients with severe target lesion calcification treated with OCT-guided PCI. Successful lesion modification was defined as the complete fracture of calcification after Lacrosse NSE angioplasty...
October 19, 2018: Cardiovascular Intervention and Therapeutics
Zayed M Abu Tawila, Salmah Ismail, Arezoo Dadrasnia, Mohammed Maikudi Usman
The production, optimization, and characterization of the bioflocculant QZ-7 synthesized by a novel Bacillus salmalaya strain 139SI isolated from a private farm soil in Selangor, Malaysia, are reported. The flocculating activity of bioflocculant QZ-7 present in the selected strain was found to be 83.3%. The optimal culture for flocculant production was achieved after cultivation at 35.5 °C for 72 h at pH 7 ± 0.2, with an inoculum size of 5% ( v / v ) and sucrose and yeast extract as carbon and nitrogen sources...
October 18, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Michael J Gibney, Susan I Barr, France Bellisle, Adam Drewnowski, Sisse Fagt, Sinead Hopkins, Barbara Livingstone, Gregorio Varela-Moreiras, Luis Moreno, Jessica Smith, Florent Vieux, Frank Thielecke, Gabriel Masset
The International Breakfast Research Initiative (IBRI) set out to derive nutritional recommendations for a balanced breakfast using a standardized analysis of national nutrition surveys from Canada, Denmark, France, Spain, UK and the US. In all countries, the frequency of breakfast consumption by age was high and U-shaped with children and older adults having a higher frequency of breakfast consumption. Breakfast contributed 16% to 21% of daily energy intake. In all countries, breakfast was a carbohydrate- and nutrient-rich meal, providing more carbohydrates (including sugars), thiamin, riboflavin, folate, calcium, potassium, and magnesium, and less vitamin A, fats and sodium relative to its contribution to daily energy intakes...
October 18, 2018: Nutrients
Lize Cuypers, Pieter J K Libin, Peter Simmonds, Ann Nowé, Jorge Muñoz-Jordán, Luiz Carlos Junior Alcantara, Anne-Mieke Vandamme, Gilberto A Santiago, Kristof Theys
Dengue virus (DENV) is estimated to cause 390 million infections per year worldwide. A quarter of these infections manifest clinically and are associated with a morbidity and mortality that put a significant burden on the affected regions. Reports of increased frequency, intensity, and extended geographical range of outbreaks highlight the virus's ongoing global spread. Persistent transmission in endemic areas and the emergence in territories formerly devoid of transmission have shaped DENV's current genetic diversity and divergence...
October 18, 2018: Viruses
Natascha Platz Batista da Silva, Matthias Hornung, Lukas P Beyer, Christina Hackl, Stefan Brunner, Hans Jürgen Schlitt, Philipp Wiggermann, Ernst Michael Jung
PURPOSE:  Assessment of intraoperative quantitative shear wave elastography (SWE) and contrast-enhanced ultrasound (CEUS) for the characterization of focal liver lesions (FLLs) during liver surgery using postoperative histopathological results as the gold standard. MATERIALS AND METHODS:  US data of 79 consecutive patients with 98 FLLs who underwent liver surgery between 08/2015 - 06/2017 were prospectively acquired and retrospectively analyzed. Multifrequency linear/T-shaped probes (6 - 9 MHz) were used to store cine loops of at least 5 s and images of B-mode, SWE and CEUS...
October 19, 2018: Ultraschall in der Medizin
Kumar Subramani, Srikrishnan P Raju, Xiaogang Chu, Marie Warren, Chirayu D Pandya, Nasrul Hoda, Sadanand Fulzele, Raghavan Raju
Sepsis affects microcirculation and tissue perfusion leading to tissue hypoxia and multiple organ dysfunction. Red blood cells (RBCs; erythrocytes) are typically biconcave in shape, transport hemoglobin-bound oxygen and are reversibly deformable facilitating trafficking through capillaries. Decreased deformability of RBCs adversely affects tissue oxygenation. The purpose of this project was to determine RBC deformability in a murine model of polymicrobial sepsis by a method that utilizes laser diffraction and microfluidics, and to identify the causative factors in the plasma that may contribute to loss in RBC deformability...
October 16, 2018: International Immunopharmacology
Susan A Kayser, Catherine A VanGilder, Charlie Lachenbruch
BACKGROUND: Prevalence of hospital-acquired pressure injuries has declined over time. However, it is unknown if this decline is consistent for different stages of pressure injuries. It is also unknown if risk factors differ between superficial (stage 1 and 2) and severe (stage 3, 4, deep tissue, and unstageable) pressure injuries. OBJECTIVE: To examine changes in prevalence of superficial and severe hospital-acquired pressure injuries from 2011 to 2016. To evaluate differences between risk factors associated with superficial versus severe hospital-acquired pressure injuries...
September 8, 2018: International Journal of Nursing Studies
Cathryn Pinto, Katherine Bristowe, Jana Witt, Joanna M Davies, Susanne de Wolf-Linder, Marsha Dawkins, Ping Guo, Irene J Higginson, Barbara Daveson, Fliss E M Murtagh
BACKGROUND: Routine use of outcome measures in palliative care is recommended to demonstrate and improve quality of care. The use of outcome measures is relatively recent in UK specialist palliative care services and understanding their use in practice is key to successful implementation. We therefore aimed to explore how patient-centred outcome measures are used in specialist palliative care, and identify key considerations for implementation. METHODS: Multi-method qualitative study (semi-structured interviews and non-participant observation)...
October 2018: Annals of Palliative Medicine
Sarah J Shapiro, Dhananjaya Dendukuri, Patrick S Doyle
Hydrogel microparticles have been extensively used in the field of medical diagnostics for detecting targets ranging from proteins to nucleic acids. However, little is known about how the shape of hydrogel particles impacts the signal from a bioassay. In this article, we analyze the flux into porous hydrogel particles to develop scaling laws for the signal from a point-of-care bioassay. The signal can be increased by increasing the ratio of the surface area of the hydrogel particle to the 2-D projected imaging area used for analysis...
October 19, 2018: Analytical Chemistry
Mario Theers, Elmar Westphal, Kai Qi, Roland G Winkler, Gerhard Gompper
The spatiotemporal dynamics in systems of active self-propelled particles is controlled by the propulsion mechanism in combination with various direct interactions, such as steric repulsion and hydrodynamics. These direct interactions are typically anisotropic, and come in different "flavors", such as spherical and elongated particle shapes, pusher and puller flow fields, etc. The combination of the various aspects is expected to lead to new emergent behavior. However, it is a priori not evident whether shape and hydrodynamics act synergistically or antagonistically to generate motility-induced clustering (MIC) and phase separation (MIPS)...
October 19, 2018: Soft Matter
Buce Hetharua, Derong Min, Hu Liao, Li'an Lin, Hong Xu, Yun Tian
A Gram-stain-negative Rhodobacterales strain, designated as FSX-11T , was isolated from surface seawater of Xiamen port in China. Strain FSX-11T showed less than 96.5 % 16S rRNA gene sequence similarity to the type strains of species with validly published names. Phylogenetic analysis based on 16S rRNA gene sequences revealed that the novel isolate formed a distinct monophyletic clade within the family Rhodobacteriaceae and clustered distantly with the genera Thalassobius and Marivita. Cells of strain FSX-11T were non-motile, oval-shaped and facultative anaerobic...
October 19, 2018: International Journal of Systematic and Evolutionary Microbiology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"