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https://www.readbyqxmd.com/read/28411433/preparation-method-of-ni-pt-c-nanocatalyst-affects-the-performance-of-direct-borohydride-hydrogen-peroxide-fuel-cell-improved-power-density-and-increased-catalytic-oxidation-of-borohydride
#1
Mir Ghasem Hosseini, Raana Mahmoodi
The Ni@Pt/C electrocatalysts were synthesized using two different methods: with sodium dodecyl sulfate (SDS) and without SDS. The metal loading in synthesized nanocatalysts was 20wt% and the molar ratio of Ni: Pt was 1:1. The structural characterizations of Ni@Pt/C electrocatalysts were investigated by field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HR-TEM)...
April 8, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28401403/analysis-of-antimicrobial-and-immunomodulatory-substances-produced-by-heterofermentative-lactobacillus-reuteri
#2
Gabriela Greifová, Hyacinta Májeková, Gabriel Greif, Patrik Body, Maria Greifová, Martina Dubničková
Antimicrobial and immunomodulatory potential of various Lactobacillus reuteri strains is closely connected to their metabolite production profile under given cultivation conditions. We determined the in vitro production of antimicrobial substances such as organic acids, ethanol, and reuterin by four strains of L. reuteri (L. reuteri E, L. reuteri KO5, L. reuteri CCM 3625, and L. reuteri ATCC 55730). All studied L. reuteri strains showed the ability to produce lactic acid, acetic acid, and ethanol with concominant consumption of glucose and together with phenyllactic acid-a potent antifungal compound-with concominant consumption of phenylalanine...
April 11, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28396394/the-carbonic-anhydrase-cah1-is-an-essential-component-of-the-carbon-concentrating-mechanism-in-nannochloropsis-oceanica
#3
Christopher W Gee, Krishna K Niyogi
Aquatic photosynthetic organisms cope with low environmental CO2 concentrations through the action of carbon-concentrating mechanisms (CCMs). Known eukaryotic CCMs consist of inorganic carbon transporters and carbonic anhydrases (and other supporting components) that culminate in elevated [CO2] inside a chloroplastic Rubisco-containing structure called a pyrenoid. We set out to determine the molecular mechanisms underlying the CCM in the emerging model photosynthetic stramenopile, Nannochloropsis oceanica, a unicellular picoplanktonic alga that lacks a pyrenoid...
April 10, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28391022/reliable-the-value-of-early-postoperative-magnetic-resonance-imaging-after-ccm-surgery
#4
Bixia Chen, Sophia Göricke, Karsten Wrede, Ramazan Jabbarli, Max Jaegersberg, Ulrich Sure, Philipp Dammann
BACKGROUND: Cerebral cavernous malformations (CCM) can cause intracerebral hemorrhage. The lesions themselves are frequently associated with perifocal hemosiderin deposits due to repetitive microhemorrhages. Main indications for a surgical treatment are recurrent symptomatic hemorrhages or cavernoma-related epilepsy (CRE). After surgical resection, follow-up MR-imaging is usually performed to confirm a) the complete resection of the CCM and, especially in cases of CRE, b) the complete resection of the hemosiderin deposits...
April 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28387823/synopsis-of-guidelines-for-the-clinical-management-of-cerebral-cavernous-malformations-consensus-recommendations-based-on-systematic-literature-review-by-the-angioma-alliance-scientific-advisory-board-clinical-experts-panel
#5
Amy Akers, Rustam Al-Shahi Salman, Issam A Awad, Kristen Dahlem, Kelly Flemming, Blaine Hart, Helen Kim, Ignacio Jusue-Torres, Douglas Kondziolka, Cornelia Lee, Leslie Morrison, Daniele Rigamonti, Tania Rebeiz, Elisabeth Tournier-Lasserve, Darrel Waggoner, Kevin Whitehead
BACKGROUND: Despite many publications about cerebral cavernous malformations (CCMs), controversy remains regarding diagnostic and management strategies. OBJECTIVE: To develop guidelines for CCM management. METHODS: The Angioma Alliance ( www.angioma.org ), the patient support group in the United States advocating on behalf of patients and research in CCM, convened a multidisciplinary writing group comprising expert CCM clinicians to help summarize the existing literature related to the clinical care of CCM, focusing on 5 topics: (1) epidemiology and natural history, (2) genetic testing and counseling, (3) diagnostic criteria and radiology standards, (4) neurosurgical considerations, and (5) neurological considerations...
April 7, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28387598/patient-experiences-with-care-differ-with-chronic-care-management-in-a-federally-qualified-community-health-center
#6
Claude M Setodji, Denise D Quigley, Marc N Elliott, Q Burkhart, Michael E Hochman, Alex Y Chen, Ron D Hays
This study compares patient experience among practices that vary in adoption of the chronic care management (CCM) dimension of the patient-centered medical home (PCMH) model that focuses on care coordination and management of chronic diseases. Study participants were 2903 adult patients (ages 18 years or older) at 14 primary care centers in California. Seven of the sites were classified as high (more CCM) and the other 7 low on a CCM index. Hypotheses were tested using ordinary least squares regression models...
April 7, 2017: Population Health Management
https://www.readbyqxmd.com/read/28379522/can-increased-leaf-photosynthesis-be-converted-into-higher-crop-mass-production-a-simulation-study-for-rice-using-the-crop-model-gecros
#7
Xinyou Yin, Paul C Struik
Various genetic engineering routes to enhance C3 leaf photosynthesis have been proposed to improve crop productivity. However, their potential contribution to crop productivity needs to be assessed under realistic field conditions. Using 31 year weather data, we ran the crop model GECROS for rice in tropical, subtropical, and temperate environments, to evaluate the following routes: (1) improving mesophyll conductance (gm); (2) improving Rubisco specificity (Sc/o); (3) improving both gm and Sc/o; (4) introducing C4 biochemistry; (5) introducing C4 Kranz anatomy that effectively minimizes CO2 leakage; (6) engineering the complete C4 mechanism; (7) engineering cyanobacterial bicarbonate transporters; (8) engineering a more elaborate cyanobacterial CO2-concentrating mechanism (CCM) with the carboxysome in the chloroplast; and (9) a mechanism that combines the low ATP cost of the cyanobacterial CCM and the high photosynthetic capacity per unit leaf nitrogen...
March 31, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28375381/numerical-analysis-of-computational-cannula-microscopy
#8
Ganghun Kim, Rajesh Menon
Microscopy in hard-to-reach parts of a sample, such as the deep brain, can be enabled by computational-cannula microscopy (CCM), where light is transported from one end to the other end of a solid-glass cannula. Computational methods are applied to unscramble the recorded signal to obtain the object details. Since the cannula itself can be microscopic (∼250  μm in diameter), CCM can enable minimally invasive imaging. Here, we describe a full-scale simulation model for CCM and apply it to not only explore the limits of the technology, but also use it to improve the imaging performance...
March 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28371279/ephb4-forward-signalling-mediates-angiogenesis-caused-by-ccm3-pdcd10-ablation
#9
Chao You, Kai Zhao, Philipp Dammann, Kathy Keyvani, Ilonka Kreitschmann-Andermahr, Ulrich Sure, Yuan Zhu
CCM3, also named as PDCD10, is a ubiquitous protein expressed in nearly all tissues and in various types of cells. It is essential for vascular development and post-natal vessel maturation. Loss-of-function mutation of CCM3 predisposes for the familial form of cerebral cavernous malformation (CCM). We have previously shown that knock-down of CCM3 stimulated endothelial angiogenesis via impairing DLL4-Notch signalling; moreover, loss of endothelial CCM3 stimulated tumour angiogenesis and promoted tumour growth...
April 1, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28370425/supplementation-with-cumulus-cell-masses-improves-the-in-vitro-meiotic-competence-of-porcine-cumulus-oocytes-complexes-derived-from-small-follicles
#10
R Matsunaga, H Funahashi
The present study was conducted to examine the supplemented effect of cumulus cell masses (CCMs) derived from middle follicle (MF; 3-6 mm diameter) on the morphology and the meiotic or developmental competence of oocytes from small follicles (SF; 1-2 mm diameter). The number of cumulus cells surrounding oocytes just after collection was also lower in cumulus-oocyte complexes (COCs) from SF than MF. The ooplasmic diameter of oocytes was significantly smaller in SF-derived oocytes than MF-derived ones before and after in vitro maturation (IVM), whereas the diameter significantly increased during the culture...
March 30, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28369472/diversity-of-co2-concentrating-mechanisms-and-responses-to-co2-concentration-in-marine-and-freshwater-diatoms
#11
Romain Clement, Erik Jensen, Laura Prioretti, Stephen C Maberly, Brigitte Gontero
The presence of CO2-concentrating mechanisms (CCMs) is believed to be one of the characteristics that allows diatoms to thrive in many environments and to be major contributors to global productivity. Here, the type of CCM and the responses to variable CO2 concentration were studied in marine and freshwater diatoms. At 400 ppm, there was a large diversity in physiological and biochemical mechanisms among the species. While Phaeodactylum tricornutum mainly used HCO3-, Thalassiosira pseudonana mainly used CO2...
March 27, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28351063/from-communication-skills-to-skillful-communication-a-longitudinal-integrated-curriculum-for-critical-care-medicine-fellows
#12
Amanda L Roze des Ordons, Christopher J Doig, Philippe Couillard, Jason Lord
PROBLEM: Communication with patients and families in critical care medicine (CCM) can be complex and challenging. A longitudinal curricular model integrating multiple techniques within classroom and clinical milieus may facilitate skillful communication across diverse settings. APPROACH: In 2014-2015, the authors developed and implemented a curriculum for CCM fellows at the Cumming School of Medicine, University of Calgary, to promote the longitudinal development of skillful communication...
April 2017: Academic Medicine: Journal of the Association of American Medical Colleges
https://www.readbyqxmd.com/read/28345674/skeletal-muscle-pump-drives-control-of-cardiovascular-and-postural-systems
#13
Ajay K Verma, Amanmeet Garg, Da Xu, Michelle Bruner, Reza Fazel-Rezai, Andrew P Blaber, Kouhyar Tavakolian
The causal interaction between cardio-postural-musculoskeletal systems is critical in maintaining postural stability under orthostatic challenge. The absence or reduction of such interactions could lead to fainting and falls often experienced by elderly individuals. The causal relationship between systolic blood pressure (SBP), calf electromyography (EMG), and resultant center of pressure (COPr) can quantify the behavior of cardio-postural control loop. Convergent cross mapping (CCM) is a non-linear approach to establish causality, thus, expected to decipher nonlinear causal cardio-postural-musculoskeletal interactions...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28343276/an-updated-review-of-cardiac-devices-in-heart-failure
#14
REVIEW
C Murphy, H Zafar, F Sharif
BACKGROUND: Heart failure has the highest rates of adult hospitalisations, the highest mortality rates and significant costs associated with its care. The cost of heart failure is expected continue to grow on a global scale, with $108 billion spent on heart failure in 2012. Mortality rates are high, with incident cases of heart failure resulting in 30% 1-year mortality, and in hospital mortality of acute heart failure, 28%. METHODS AND RESULTS: This article reviews the devices currently in use for the treatment of heart failure, as well as those that are under investigation...
March 25, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/28335536/doa-estimation-based-on-real-valued-cross-correlation-matrix-of-coprime-arrays
#15
Jianfeng Li, Feng Wang, Defu Jiang
A fast direction of arrival (DOA) estimation method using a real-valued cross-correlation matrix (CCM) of coprime subarrays is proposed. Firstly, real-valued CCM with extended aperture is constructed to obtain the signal subspaces corresponding to the two subarrays. By analysing the relationship between the two subspaces, DOA estimations from the two subarrays are simultaneously obtained with automatic pairing. Finally, unique DOA is determined based on the common results from the two subarrays. Compared to partial spectral search (PSS) method and estimation of signal parameter via rotational invariance (ESPRIT) based method for coprime arrays, the proposed algorithm has lower complexity but achieves better DOA estimation performance and handles more sources...
March 20, 2017: Sensors
https://www.readbyqxmd.com/read/28332167/controlled-release-of-vanadium-from-a-composite-scaffold-stimulates-mesenchymal-stem-cell-osteochondrogenesis
#16
S D Schussler, K Uske, P Marwah, F W Kemp, J D Bogden, S S Lin, Treena Livingston Arinzeh
Large bone defects often require the use of autograft, allograft, or synthetic bone graft augmentation; however, these treatments can result in delayed osseous integration. A tissue engineering strategy would be the use of a scaffold that could promote the normal fracture healing process of endochondral ossification, where an intermediate cartilage phase is later transformed to bone. This study investigated vanadyl acetylacetonate (VAC), an insulin mimetic, combined with a fibrous composite scaffold, consisting of polycaprolactone with nanoparticles of hydroxyapatite and beta-tricalcium phosphate, as a potential bone tissue engineering scaffold...
March 22, 2017: AAPS Journal
https://www.readbyqxmd.com/read/28328846/prevalence-of-complications-after-surgery-in-treatment-for-cervical-compressive-myelopathy-a-meta-analysis-for-last-decade
#17
Tao Wang, Xiao-Ming Tian, Si-Kai Liu, Hui Wang, Ying-Ze Zhang, Wen-Yuan Ding
PURPOSE: We aim to perform a meta-analysis on prevalence of all kinds of operation-related complications following surgery treating cervical compressive myelopathy (CCM) and to provide reference for surgeons making surgical plan. METHODS: An extensive search of literature was performed in PubMed/MEDLINE, Embase, the Cochrane library, CNKI, and WANFANG databases on incidence of operation-related complications from January 2007 to November 2016. Data was calculated and data analysis was conducted with STATA 12...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28327920/of-bubbles-and-layers-which-cerebral-cavernous-malformations-are-most-difficult-to-dissect-from-surrounding-eloquent-brain-tissue
#18
Philipp Dammann, Karsten Wrede, Ramazan Jabbarli, Oliver Müller, Christoph Mönninghoff, Michael Forsting, Ulrich Sure
BACKGROUND: Cerebral cavernous malformations (CCM) may lead to repetitive intracerebral hemorrhage. In selected cases, a surgical resection is indicated. OBJECTIVE: To identify magnetic resonance imaging (MRI) features of CCM that correlate with the difficulty of dissection and postoperative outcome. METHODS: This study prospectively analyzed pre- and postoperative MRI features, intraoperative findings (surgical questionnaire), and postoperative outcome of 41 patients with eloquent CCM...
March 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28322971/effects-and-mechanisms-of-compound-chinese-medicine-and-major-ingredients-on-microcirculatory-dysfunction-and-organ-injury-induced-by-ischemia-reperfusion
#19
REVIEW
Jing-Yan Han, Quan Li, Zhi-Zhong Ma, Jing-Yu Fan
Microcirculation dysfunction and organ injury after ischemia and reperfusion (I/R) result from a complex pathologic process consisting of multiple links, with metabolism impairment in the ischemia phase and oxidative stress in the reperfusion phase as initiators, and any treatment targeting a single link is insufficient to cope with this. Compound Chinese medicine (CCM) has been applied in clinics in China and some Asian nations for more than 2000 years. Studies over the past decades revealed the protective and therapeutic effect of CCMs and major ingredients on I/R-induced microcirculatory dysfunction and tissue injury in the heart, brain, liver, intestine, and so on...
March 16, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28318403/familial-cerebral-cavernous-malformations-are-associated-with-adrenal-calcifications-on-ct-scans-an-imaging-biomarker-for-a-hereditary-cerebrovascular-condition
#20
Corinne D Strickland, Steven C Eberhardt, Mary R Bartlett, Jeffrey Nelson, Helen Kim, Leslie A Morrison, Blaine L Hart
Purpose To determine if adrenal calcifications seen at computed tomography (CT) are associated with familial cerebral cavernous malformations (fCCMs) in carriers of the CCM1 Common Hispanic Mutation. Materials and Methods This study was approved by the institutional review board. The authors retrospectively reviewed abdominal CT scans in 38 patients with fCCM, 38 unaffected age- and sex-matched control subjects, and 13 patients with sporadic, nonfamilial cerebral cavernous malformation (CCM). The size, number, and laterality of calcifications and the morphologic characteristics of the adrenal gland were recorded...
March 20, 2017: Radiology
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