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https://www.readbyqxmd.com/read/28088721/modeling-biosolids-drying-through-a-laminated-hydrophobic-membrane
#1
Solmaz Marzooghi, Chunjian Shi, Steven K Dentel, Paul T Imhoff
The adaptation of the membrane distillation process as a low-cost and sustainable approach to biosolids drying and stabilization is investigated, which may have application in container-based sanitation systems proposed in low-income urban regions. Three-layer laminated, breathable, hydrophobic membranes enclose the biosolids, facilitating drying but preventing transport of contaminants. The membranes used in this process are non-wetting with pore spaces that only allow vapor transport. Water vapor can be expelled due to a moderate vapor pressure gradient...
December 29, 2016: Water Research
https://www.readbyqxmd.com/read/28088566/removal-of-salicylic-acid-as-an-emerging-contaminant-by-a-polar-nano-dendritic-adsorbent-from-aqueous-media
#2
M Arshadi, F Mousavinia, M K Abdolmaleki, M J Amiri, A Khalafi-Nezhad
A polar nano-dendritic adsorbent containing amine groups (SAPAMAA) was synthesized onto the nanoparticles of SiO2Al2O3 and its uptake of salicylic acid (SA) from the synthetic and real water was investigated. The synthesized nanomaterials were fully studied by nuclear magnetic resonance spectrum ((1)H NMR and (13)C NMR), Fourier transform infrared spectroscopy (FT-IR), zeta potential (ζ), inductively coupled plasma atomic emission spectroscopy (ICP-AES), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) and elemental analysis...
January 9, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28088294/suitability-of-small-diagnostic-peripheral-blood-samples-for-cell-therapy-studies
#3
Coralea Stephanou, Panayiota Papasavva, Myria Zachariou, Petros Patsali, Marilena Epitropou, Petros Ladas, Ruba Al-Abdulla, Soteroulla Christou, Michael N Antoniou, Carsten W Lederer, Marina Kleanthous
BACKGROUND AIMS: Primary hematopoietic stem and progenitor cells (HSPCs) are key components of cell-based therapies for blood disorders and are thus the authentic substrate for related research. We propose that ubiquitous small-volume diagnostic samples represent a readily available and as yet untapped resource of primary patient-derived cells for cell- and gene-therapy studies. METHODS: In the present study we compare isolation and storage methods for HSPCs from normal and thalassemic small-volume blood samples, considering genotype, density-gradient versus lysis-based cell isolation and cryostorage media with different serum contents...
February 2017: Cytotherapy
https://www.readbyqxmd.com/read/28087781/deleterious-variants-in-asian-rice-and-the-potential-cost-of-domestication
#4
Qingpo Liu, Yongfeng Zhou, Peter L Morrell, Brandon S Gaut
Many SNPs are predicted to encode deleterious amino acid variants. These slightly deleterious mutations can provide unique insights into population history, the dynamics of selection, and the genetic bases of phenotypes. This is especially true for domesticated species, where a history of bottlenecks and selection may affect the frequency of deleterious variants and signal a 'cost of domestication'. Here we investigated the numbers and frequencies of deleterious variants in Asian rice (O. sativa), focusing on two varieties (japonica and indica) and their wild relative (O...
January 12, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28087535/efficient-low-ph-iron-removal-by-a-microbial-iron-oxide-mound-ecosystem-at-scalp-level-run
#5
Christen L Grettenberger, Alexandra R Pearce, Kyle J Bibby, Daniel S Jones, William D Burgos, Jennifer L Macalady
: Acid mine drainage (AMD) is a major environmental problem affecting tens of thousands of km of waterways worldwide. Passive bioremediation of AMD relies on microbial communities to oxidize and remove iron from the system; however, iron-oxidation rates in AMD environments are highly variable across sites. At Scalp Level Run (Cambria County PA), first-order iron-oxidation rates are ten times faster than at other coal associated iron mounds in the Appalachians. We examined the bacterial community at Scalp Level Run to determine whether a unique community is responsible for the rapid iron oxidation rate...
January 13, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28081566/a-novel-phytophthora-sojae-resistance-rps12-gene-mapped-to-a-genomic-region-that-contains-several-rps-genes
#6
Dipak K Sahoo, Nilwala S Abeysekara, Silvia R Cianzio, Alison E Robertson, Madan K Bhattacharyya
Phytophthora sojae Kaufmann and Gerdemann, which causes Phytophthora root rot, is a widespread pathogen that limits soybean production worldwide. Development of Phytophthora resistant cultivars carrying Phytophthora resistance Rps genes is a cost-effective approach in controlling this disease. For this mapping study of a novel Rps gene, 290 recombinant inbred lines (RILs) (F7 families) were developed by crossing the P. sojae resistant cultivar PI399036 with the P. sojae susceptible AR2 line, and were phenotyped for responses to a mixture of three P...
2017: PloS One
https://www.readbyqxmd.com/read/28080022/single-wall-carbon-nanotubes-doping-in-lead-acid-batteries-a-new-horizon
#7
Anjan Banerjee, Baruch Ziv, Yuliya Shilina, Elena Levi, Shalom Luski, Doron Aurbach
The addition of single-wall carbon nanotubes (SWCNT) to lead-acid battery electrodes is the most efficient suppresser of uncontrolled sulfation processes. Due to the cost of SWCNT, we studied the optimization loading of SWCNT in lead-acid batteries electrodes. We optimized the SWCNT loading concentrations in both the positive and negative plates, separately. Loadings of 0.01% and 0.001% in the positive and negative active masses were studied, respectively. Two volts of lead-acid laboratory cells with sulfuric acid, containing silica gel-type electrolytes, were cycled in a 25% and 50% depth-of-discharge (DOD) cycling with a charging rate of C and 2C, respectively, and discharge rates of C/2 and C, respectively...
January 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28079257/a-safe-cheap-and-easy-to-use-isotropic-diffusion-mri-phantom-for-clinical-and-multicenter-studies
#8
Pim Pullens, Piet Bladt, Jan Sijbers, Andrew I R Maas, Paul M Parizel
PURPOSE: Since Diffusion Weighted Imaging (DWI) data acquisition and processing are not standardized, substantial differences in DWI derived measures such as Apparent Diffusion Coefficient (ADC) may arise which are related to the acquisition or MRI processing method, but not to the sample under study. Quality assurance using a standardized test object, or phantom, is a key factor in standardizing DWI across scanners. METHODS: Current diffusion phantoms are either complex to use, not available in larger quantities, contain substances unwanted in a clinical environment, or are expensive...
January 12, 2017: Medical Physics
https://www.readbyqxmd.com/read/28078655/single-dose-oritavancin-compared-to-standard-of-care-iv-antibiotics-for-acute-bacterial-skin-and-skin-structure-infection-in-the-outpatient-setting-a-retrospective-real-world-study
#9
Patrick J Anastasio, Pete Wolthoff, Annmarie Galli, Weihong Fan
INTRODUCTION: Cost-containment strategies are shifting the treatment of acute bacterial skin and skin structure infections (ABSSSI) from inpatient to outpatient settings. Current standard of care (SoC) requires multiple-dose regimens, which are associated with high hospitalization rates and high costs. Oritavancin, a new single-dose antibiotic for ABSSSI, may be suitable for outpatient therapy. This analysis evaluates the effectiveness, costs, and resource utilization of oritavancin vs...
January 11, 2017: Infectious Diseases and Therapy
https://www.readbyqxmd.com/read/28076183/markov-influence-diagrams
#10
Francisco J Díez, Mar Yebra, Iñigo Bermejo, Miguel A Palacios-Alonso, Manuel Arias Calleja, Manuel Luque, Jorge Pérez-Martín
Markov influence diagrams (MIDs) are a new type of probabilistic graphical model that extends influence diagrams in the same way that Markov decision trees extend decision trees. They have been designed to build state-transition models, mainly in medicine, and perform cost-effectiveness analyses. Using a causal graph that may contain several variables per cycle, MIDs can model various patient characteristics without multiplying the number of states; in particular, they can represent the history of the patient without using tunnel states...
February 2017: Medical Decision Making: An International Journal of the Society for Medical Decision Making
https://www.readbyqxmd.com/read/28075354/the-state-of-the-art-of-lethal-oviposition-trap-based-mass-interventions-for-arboviral-control
#11
Brian J Johnson, Scott A Ritchie, Dina M Fonseca
The intensifying expansion of arboviruses highlights the need for effective invasive Aedes control. While mass-trapping interventions have long been discredited as inefficient compared to insecticide applications, increasing levels of insecticide resistance, and the development of simple affordable traps that target and kill gravid female mosquitoes, show great promise. We summarize the methodologies and outcomes of recent lethal oviposition trap-based mass interventions for suppression of urban Aedes and their associated diseases...
January 8, 2017: Insects
https://www.readbyqxmd.com/read/28074883/etalon-array-reconstructive-spectrometry
#12
Eric Huang, Qian Ma, Zhaowei Liu
Compact spectrometers are crucial in areas where size and weight may need to be minimized. These types of spectrometers often contain no moving parts, which makes for an instrument that can be highly durable. With the recent proliferation in low-cost and high-resolution cameras, camera-based spectrometry methods have the potential to make portable spectrometers small, ubiquitous, and cheap. Here, we demonstrate a novel method for compact spectrometry that uses an array of etalons to perform spectral encoding, and uses a reconstruction algorithm to recover the incident spectrum...
January 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28074481/electronic-structure-of-stoichiometric-and-reduced-zno-from-periodic-relativistic-all-electron-hybrid-density-functional-calculations-using-numeric-atom-centered-orbitals
#13
Francesc Viñes, Francesc Illas
The atomic and electronic structure of stoichiometric and reduced ZnO wurtzite has been studied using a periodic relativistic all electron hybrid density functional (PBE0) approach and numeric atom-centered orbital basis set with quality equivalent to aug-cc-pVDZ. To assess the importance of relativistic effects, calculations were carried out without and with explicit inclusion of relativistic effects through the zero order regular approximation. The calculated band gap is ∼0.2 eV smaller than experiment, close to previous PBE0 results including relativistic calculation through the pseudopotential and ∼0...
January 11, 2017: Journal of Computational Chemistry
https://www.readbyqxmd.com/read/28074422/compacted-multiparticulate-systems-for-colon-specific-delivery-of-ketoprofen
#14
Rodrigo Gomes de Alencar, Aline Carlos de Oliveira, Eliana Martins Lima, Marcílio Sérgio Soares da Cunha-Filho, Stephânia Fleury Taveira, Ricardo Neves Marreto
Pellet-containing tablets for colon-specific drug delivery present higher targeting efficiency and lower costs when compared with monolithic tablets and pellet-filled capsules, respectively. In this study, pellets containing ketoprofen were coated with different acrylic polymers and submitted to compaction. The influence of formulation and process factors on film integrity was then evaluated. Pellets were prepared via extrusion-spheronization and coated using two acrylic polymers (Eudragit® FS 30 D and Opadry® 94 k28327, PMMA and PMA, respectively)...
January 10, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28073737/using-real-time-social-media-technologies-to-monitor-levels-of-perceived-stress-and-emotional-state-in-college-students-a-web-based-questionnaire-study
#15
Sam Liu, Miaoqi Zhu, Dong Jin Yu, Alexander Rasin, Sean D Young
BACKGROUND: College can be stressful for many freshmen as they cope with a variety of stressors. Excess stress can negatively affect both psychological and physical health. Thus, there is a need to find innovative and cost-effective strategies to help identify students experiencing high levels of stress to receive appropriate treatment. Social media use has been rapidly growing, and recent studies have reported that data from these technologies can be used for public health surveillance...
January 10, 2017: JMIR Mental Health
https://www.readbyqxmd.com/read/28072487/the-structure-of-linkers-affects-the-dna-binding-properties-of-tethered-dinuclear-ruthenium-ii-metallo-intercalators
#16
Hiwa Saeed, Ibrahim Saeed, Niklaas Buurma, Jim Antony Thomas
With the long-term aim of enhancing the binding properties of dinuclear RuII-based DNA light-switch complexes, a series of eight structurally related mono- and dinuclear systems are reported in which the linker of the bridging ligand has been modulated. These tethered systems have been designed to explore issues of steric demand at the binding site and the thermodynamic cost of entropy loss upon binding. An analysis of detailed spectroscopic and isothermal titration calorimetry (ITC) studies on the new complexes reveal that one of the linkers produces a dinuclear systems that binds to duplex DNA with an affinity (Kb > 107 M-1) that is higher than its corresponding monometallic complex and is the highest affinity for a non-threading bis-intercalating metal complex...
January 10, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28071980/metabolic-syndrome-hypertension-and-nervous-system-injury-epidemiological-correlates
#17
Giovanna Ricci, Isabel Pirillo, Daniele Tomassoni, Ascanio Sirignano, Iolanda Grappasonni
: Metabolic syndrome (MetS) is a common and complex disorder combining hypertension, obesity, dyslipidemia, and insulin resistance. MetS represents a risk factor for changes in cognitive functions in older age, and several studies have suggested that MetS may be linked to dementia. This article reviews the main evidences about the relationship between MetS and neurodegenerative disease. Starting from an epidemiological point of view, the article analyzes medico-social aspects related to MetS, considering the reduction of work capacity and the condition of disability that it involves...
January 10, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28069631/pollination-reservoirs-in-lowbush-blueberry-ericales-ericaceae
#18
E M Venturini, F A Drummond, A K Hoshide, A C Dibble, L B Stack
Pollinator-dependent agriculture heavily relies upon a single pollinator-the honey bee. To diversify pollination strategies, growers are turning to alternatives. Densely planted reservoirs of pollen- and nectar-rich flowers (pollination reservoirs, hereafter "PRs") may improve pollination services provided by wild bees. Our focal agroecosystem, lowbush blueberry (Vaccinium angustifolium Aiton), exists in a simple landscape uniquely positioned to benefit from PRs. First, we contrast bee visitation rates and use of three types of PR...
January 9, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28068187/a-century-of-surgical-innovation-at-a-boston-hospital
#19
JaBaris D Swain, Gaurav Sharma, Rowza T Rumma, P Marco Fisichella, Edward Whang
BACKGROUND: Innovation has been a central focus of the Department of Surgery at the Brigham and Women's Hospital since its very inception. Here we review examples of innovations originating in this Department and analyze factors that have been critical to successful innovation. Finally, we discuss challenges to sustainability of innovation in this Department. METHODS: Narrative review of the literature, interviews, and personal observations. RESULTS: Examples of innovations reviewed here were each dependent on three critical elements: 1) multidisciplinary collaboration among surgical innovators and individuals outside of surgery who offered complementary skills and expertise, 2) a rich institutional environment that sustained a diverse complement of innovators working in close proximity, and 3) Department Chairmen who facilitated the work of innovators and promoted their contributions, rather than seeking personal prestige or financial gain...
January 9, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/28066948/efficient-synthesis-of-nitrogen-and-sulfur-co-doped-ketjenblack-with-single-source-precursor-for-enhancing-the-oxygen-reduction-reaction-activity
#20
Guang-Chun Cheng, Guang-Lan Li, Cai-Di Liu, Li-Fang Yuan, Wen-Wen Chen, Ce Hao
Promoting the oxygen reduction reaction (ORR) catalytic activities of cost-effective catalysts is significant for the development of various energy conversion and storage systems. Herein, a highly active N and S co-doped ketjenblack (Kb) was prepared by facile pyrolyzing the mixture of thiourea and Kb in the presence of FeCl3 with a subsequently acid-leaching process. This novel synthetic approach was rational designed with the virtues that the thiourea could easily introduce the heteroatoms of both N and S elements into the carbon matrix by releasing plentiful reactive N and S-containing gases, and could simultaneously optimize the porous structure of the resultant catalyst...
January 8, 2017: Chemistry: a European Journal
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