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https://www.readbyqxmd.com/read/28930999/measuring-and-mapping-patterns-of-soil-erosion-and-deposition-related-to-soil-carbonate-concentrations-under-agricultural-management
#1
Robert H Erskine, Lucretia A Sherrod, Timothy R Green
Spatial patterns of soil erosion and deposition can be inferred from differences in ground elevation mapped at appropriate time increments. Such changes in elevation are related to changes in near-surface soil carbonate (CaCO3) profiles. The objective is to describe a simple conceptual model and detailed protocol for repeatable field and laboratory measurements of these quantities. Here, accurate elevation is measured using a ground-based differential global positioning system (GPS); other data acquisition methods could be applied to the same basic method...
September 12, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28930562/alzheimer-s-disease-diagnostics-by-a-3d-deeply-supervised-adaptable-convolutional-network
#2
Ehsan Hosseini-Asl, Mohammed Ghazal, Ali Mahmoud, Ali Aslantas, Ahmed M Shalaby, Manual F Casanova, Gregory N Barnes, Georgy Gimel'farb, Robert Keynton, Ayman El-Baz
Early diagnosis is playing an important role in preventing progress of the Alzheimer's disease (AD). This paper proposes to improve the prediction of AD with a deep 3D Convolutional Neural Network (3D-CNN), which can show generic features capturing AD biomarkers extracted from brain images, adapt to different domain datasets, and accurately classify subjects with improved fine-tuning method. The 3D-CNN is built upon a convolutional autoencoder, which is pre-trained to capture anatomical shape variations in structural brain MRI scans for source domain...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28930157/getting-more-power-from-your-flowers-multi-functional-flower-strips-enhance-pollinators-and-pest-control-agents-in-apple-orchards
#3
Alistair John Campbell, Andrew Wilby, Peter Sutton, Felix Wäckers
Flower strips are commonly recommended to boost biodiversity and multiple ecosystem services (e.g., pollination and pest control) on farmland. However, significant knowledge gaps remain regards the extent to which they deliver on these aims. Here, we tested the efficacy of flower strips that targeted different subsets of beneficial arthropods (pollinators and natural enemies) and their ecosystem services in cider apple orchards. Treatments included mixes that specifically targeted: (1) pollinators ('concealed-nectar plants'); (2) natural enemies ('open-nectar plants'); or (3) both groups concurrently (i...
September 20, 2017: Insects
https://www.readbyqxmd.com/read/28929962/-determination-of-in-vitro-susceptibilities-of-brucella-spp-strains-against-11-different-antibacterial-gents-isolated-from-blood-cultures
#4
Recep Keşli, Hüseyin Bilgin, Halim Yılmaz
Brucellosis is a worldwide zoonotic disease and still continuous to be a major public health problem. In this study, it was aimed to identify the Brucella strains to the species level isolated from blood cultures, and to determine the rate of antimicrobial susceptibility against eleven antibacterial agents. A total of 106 Brucella spp. strains were included in the study, which were isolated from blood cultures in University of Health Sciences, Konya Training and Research Hospital, Medical Microbiology Laboratory between January 2011 and June 2013...
July 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28929960/-antimicrobial-susceptibilities-and-molecular-characterization-of-toxin-positive-clostridium-difficile-isolates-the-first-report-on-the-presence-of-hypervirulent-strains-from-turkey
#5
Emrah Salman, Belkıs Levent, Zeynep Ceren Karahan
Clostridium difficile infection is one of the most important hospital-acquired infections. Infections caused by hypervirulent C.difficile strains which produce toxins at high levels, have higher morbidity and mortality rates, more complications and relapses. They are characterized by higher sporulation ratios and resistance rates for fluoroquinolones. In order to prevent serious morbidities, mortalities and remarkable increase in health costs, highly pathogenic C.difficile strains must be identified before causing severe outbreaks...
July 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28929535/extracellular-acidosis-selectively-inhibits-pharmacomechanical-coupling-induced-by-carbachol-in-strips-of-rat-gastric-fundus
#6
Daniel Maia Nogueira de Oliveira, Francisco José Batista-Lima, Emanuella Carvalho Feitosa, Alexandre Havt, Moisés Tolentino Bento da Silva, Armênio Aguiar Dos Santos, Pedro Jorge Caldas Magalhães
Acute acidosis that results from short-term exercise delays gastric emptying in rats and decreases the responsiveness to carbachol in gastric fundus strips. The regulation of cytosolic Ca(2+) levels appears to be a mechanism of action of acidosis. The present study investigated the way in which acidosis interferes with gastric smooth muscle contractions. Rat gastric fundus isolated strips at pH 6.0 presented a lower magnitude of carbachol-induced contractions compared with preparations at pH 7.4. This lower magnitude was absent in carbachol-stimulated duodenum and KCl-stimulated gastric fundus strips...
September 19, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28929200/high-efficiency-acetone-butanol-ethanol-production-and-recovery-in-non-strict-anaerobic-gas-stripping-fed-batch-fermentation
#7
Zhangnan Lin, Hongjuan Liu, Xiang Yan, Yujie Zhou, Keke Cheng, Jian'an Zhang
Conventional acetone-butanol-ethanol (ABE) fermentation coupled with gas stripping is conducted under strict anaerobic conditions. In this work, a fed-batch ABE fermentation integrated with gas stripping (FAFIGS) system using a non-strict anaerobic butanol-producing symbiotic system, TSH06, was investigated for the efficient production of butanol. To save energy and keep a high gas-stripping efficiency, the integrated fermentation was conducted by adjusting the butanol recovery rate. The gas-stripping efficiency increased when the butanol concentration increased from 6 to 12 g/L...
September 19, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28928378/efficient-and-controlled-domain-wall-nucleation-for-magnetic-shift-registers
#8
Oscar Alejos, Víctor Raposo, Luis Sanchez-Tejerina, Eduardo Martinez
Ultrathin ferromagnetic strips with high perpendicular anisotropy have been proposed for the development of memory devices where the information is coded in tiny domains separated by domain walls. The design of practical devices requires creating, manipulating and detecting domain walls in ferromagnetic strips. Recent observations have shown highly efficient current-driven domain wall dynamics in multilayers lacking structural symmetry, where the walls adopt a chiral structure and can be driven at high velocities...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28927827/crispr-cas9-mediated-blos2-knockout-resulting-in-disappearance-of-yellow-strips-and-white-spots-on-the-larval-integument-in-spodoptera-litura
#9
Guan-Heng Zhu, Ying-Chuan Peng, Mei-Yan Zheng, Xiao-Qing Zhang, Jia-Bin Sun, Yongping Huang, Shuang-Lin Dong
The custom-design bacterial CRISPR/Cas9 system has been recently used in some insects, indicating a powerful technique for studies on gene function and transgenic insects. However, its use in lepidopteran pests is scarce. Here, we reported a CRISPR/Cas9 system mediated mutagenesis of biogenesis of lysosome-related organelles complex1, subunit 2 (BLOS2) gene in a noctuid pest Spodoptera litura. A fragment of SlitBLOS2 was identified by analyzing a S. litura transcriptome database by local basic BLAST, and the full length cDNA was acquired by RACE strategy...
September 16, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28927798/effect-of-charcoal-dextran-stripped-fetal-bovine-serum-on-in-vitro-development-of-bovine-embryos
#10
Ayman Mesalam, Rami Kong, Imran Khan, Mmr Chowdhury, Byung-Hyun Choi, Sung Woo Kim, Kyu-Woan Cho, Jong-In Jin, Il-Keun Kong
This study investigated the ability of charcoal:dextran stripped fetal bovine serum (CDS FBS) and heat-inactivated fetal bovine serum (HI FBS) to support in vitro development of bovine embryos. The developmental ability and quality of bovine embryos were determined by assessing their cell number, lipid content, mitochondrial activity, gene expression, and cryo-tolerance. The percentage of embryos that formed a blastocyst was significantly (P<0.05) higher in medium containing CDS FBS than in medium containing HI FBS (42...
September 16, 2017: Reproductive Biology
https://www.readbyqxmd.com/read/28927146/impacts-of-survivin-and-caspase-3-on-apoptosis-and-angiogenesis-in-oral-cancer
#11
Shuxia Li, Yanqi Yang, Yanping Ding, Xiaofei Tang, Zheng Sun
The present study aimed to investigate the impact of survivin and caspase-3 on apoptosis and angiogenesis in oral cancer. A total of 16 oral leukoplakia cases accompanied by low-moderate epithelial dysplasia, 12 cases of oral leukoplakia accompanied by severe epithelial dysplasia, 17 cases of high-moderate differentiated oral squamous cell carcinoma and 10 cases of normal oral mucosa were selected. Immunohistochemistry was used to detect the expression levels of survivin, caspase-3, and caspase inhibitor factor VIII in lesions from each group...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28926889/-clinical-research-progress-in-endothelial-keratoplasty
#12
Y Y Zhang, L X Xie
Endothelial keratoplasty (EK) has gradually replaced penetrating keratoplasty (PKP) and has become the main method for the treatment of endothelial dysfunction in developed countries in recent years. EK is safe and effective and can achieve good postoperative vision. The surgical techniques and postoperative effects have been improved continuously along with the development of microsurgical technology and surgical instruments. The EK surgeries mainly include Descemet stripping endothelial keratoplasty (DSEK), Descemet stripping automated endothelial keratoplasty (DSAEK), Descemet membrane endothelial keratoplasty (DMEK) and ultra-thin Descemet stripping automated endothelial keratoplasty (UT-DSAEK), which have different characteristics and advantages compared with PKP...
September 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28925901/plant-cell-wall-proteomics-as-a-strategy-to-reveal-candidate-proteins-involved-in-extracellular-lipid-metabolism
#13
Adélaïde Jacq, Vincent Burlat, Elisabeth Jamet
Plant cell walls are composite structures surrounding cells and involved in both mechanical support and perception of their environment. They are mainly composed of polysaccharides (90-95% of their mass) and proteins (5-10%). The cell wall proteins (CWPs) contribute to the arrangements and modifications of polymer networks and to cell-to-cell communication. The structure and composition of cell walls are not uniform in the whole plants, but rather specialized in different cell types to fulfil different functions...
September 18, 2017: Current Protein & Peptide Science
https://www.readbyqxmd.com/read/28925034/a-randomized-clinical-trial-on-the-efficacy-of-a-new-oxalate-containing-sensitivity-relief-strip-following-professional-vs-self-application
#14
M A Drake, P A Lenton, S A Lunos
OBJECTIVES: The purpose of this study was to determine the efficacy of 3.14% dipotassium oxalate monohydrate-containing strip on the relief of dentinal hypersensitivity (DH). A second objective was to determine whether there was a difference in DH levels when the strip was self-applied vs applied by a dental professional. METHODS: Sixty subjects were randomized into self-applied, professionally applied or placebo-strip groups. Dentinal hypersensitivity was evaluated by a blinded examiner, using the Schiff Air Scale (SAS)...
September 19, 2017: International Journal of Dental Hygiene
https://www.readbyqxmd.com/read/28923998/luminous-blue-variables-and-the-fates-of-very-massive-stars
#15
REVIEW
Nathan Smith
Luminous blue variables (LBVs) had long been considered massive stars in transition to the Wolf-Rayet (WR) phase, so their identification as progenitors of some peculiar supernovae (SNe) was surprising. More recently, environment statistics of LBVs show that most of them cannot be in transition to the WR phase after all, because LBVs are more isolated than allowed in this scenario. Additionally, the high-mass H shells around luminous SNe IIn require that some very massive stars above 40 M⊙ die without shedding their H envelopes, and the precursor outbursts are a challenge for understanding the final burning sequences leading to core collapse...
October 28, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28923994/the-direct-identification-of-core-collapse-supernova-progenitors
#16
REVIEW
Schuyler D Van Dyk
To place core-collapse supernovae (SNe) in context with the evolution of massive stars, it is necessary to determine their stellar origins. I describe the direct identification of SN progenitors in existing pre-explosion images, particularly those obtained through serendipitous imaging of nearby galaxies by the Hubble Space Telescope I comment on specific cases representing the various core-collapse SN types. Establishing the astrometric coincidence of a SN with its putative progenitor is relatively straightforward...
October 28, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28923993/spectropolarimetry-of-stripped-envelope-supernovae-observations-and-modelling
#17
Masaomi Tanaka
Spectropolarimetry is one of the most powerful methods to study the multi-dimensional geometry of supernovae (SNe). We present a brief summary of the spectropolarimetric observations of stripped-envelope core-collapse SNe. Observations indicate that stripped-envelope SNe generally have a non-axisymmetric ion distribution in the ejecta. Three-dimensional clumpy geometry nicely explains the observed properties. A typical size of the clumps deduced from observations is relatively large: [Formula: see text]25% of the photosphere...
October 28, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28923499/descemet-membrane-endothelial-keratoplasty-safety-and-outcomes-a-report-by-the-american-academy-of-ophthalmology
#18
Sophie X Deng, W Barry Lee, Kristin M Hammersmith, Anthony N Kuo, Jennifer Y Li, Joanne F Shen, Mitchell P Weikert, Roni M Shtein
PURPOSE: To review the published literature on the safety and outcomes of Descemet membrane endothelial keratoplasty (DMEK) for the surgical treatment of corneal endothelial dysfunction. METHODS: Literature searches were last conducted in the PubMed and the Cochrane Library databases most recently in May 2017. The searches, which were limited to English-language abstracts, yielded 1085 articles. The panel reviewed the abstracts, and 47 were determined to be relevant to this assessment...
September 15, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28922508/single-oxidative-collision-events-of-silver-nanoparticles-understanding-the-rate-determining-chemistry
#19
Kamonwad Ngamchuea, Richard O D Clark, Stanislav V Sokolov, Neil P Young, Christopher Batchelor-McAuley, Richard G Compton
The oxidative dissolution of citrate-capped silver nanoparticles (AgNPs) is investigated herein by two electrochemical techniques: nano-impacts and anodic stripping voltammetry. Nano-impacts or single nanoparticle-electrode collisions allow the detection of individual nanoparticles. The technique offers an advantage over surface-immobilized methods such as anodic stripping voltammetry as it eliminates the effects of particle agglomeration/ aggregation. The electrochemical studies are performed in different electrolytes (KNO3, KCl, KBr and KI) at varied concentrations ( 20 mM)...
September 18, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28922233/endoscopic-versus-open-repair-for-craniosynostosis-in-infants-using-propensity-score-matching-to-compare-outcomes-a-multicenter-study-from-the-pediatric-craniofacial-collaborative-group
#20
Douglas R Thompson, David Zurakowski, Charles M Haberkern, Paul A Stricker, Petra M Meier
BACKGROUND: The North American Pediatric Craniofacial Collaborative Group (PCCG) established the Pediatric Craniofacial Surgery Perioperative Registry to evaluate outcomes in infants and children undergoing craniosynostosis repair. The goal of this multicenter study was to utilize this registry to assess differences in blood utilization, intensive care unit (ICU) utilization, duration of hospitalization, and perioperative complications between endoscopic-assisted (ESC) and open repair in infants with craniosynostosis...
September 14, 2017: Anesthesia and Analgesia
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