10722697 results
Contributors: Ping Yang, Dongqi Wang, Derrick Yuk Fo Lai, Yifei Zhang, Qianqian Guo, Lishan Tan, Hong Yang, Chuan Tong
Date: 2019-09-11
... We examined the plot-scale spatial variations of dissolved N2O concentrations in water and N2O fluxes across the water-air interface in the subtropical shrimp ponds in southeast China using the headspace equilibration and the gas transfer methods. Our results showed that the dissolved concentrations and diffusive fluxes of N2O in the shrimp ponds ranged from 2.26 to 19.20 nM and from 16.43 to 589.65 nmol m-2 h-1, respectively, over the culture period. Significant variations of N2O concentrations and fluxes were observed within ponds, with higher values being observed in the aeration area that could be attributed to the enhanced nitrification and denitrification. Also, N2O concentrations and fluxes varied significantly among the three studied ponds as a result of the difference in N-NO3- and N-NH4+ concentrations in water. The large fine-scale spatial variations of N2O concentrations and fluxes in our aquaculture ponds suggest that management practices such as aeration and bait feeding could greatly affect the influence of aquaculture activity on N2O emissions and climate change
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Contributors: Gloria Tamborini, Claudia Cefalu', fabrizio celeste, laura fusini, anna garlasche, manuela muratori, sarah ghulam ali, paola gripari, giovanni berna
Date: 2019-09-11
... Background. Three-dimensional echocardiographic (3DE) of right ventricle (RV) has been validated in many clinical settings. However, the necessity of complicated and off–line dedicated softwares has reduced its diffusion. A new simplified “on board” 3DE software (OB) has been developed to obtain RV volumes and ejection fraction (EF) together with several conventional parameters automatically derived from 3DE: tricuspid annular plane systolic excursion (TAPSE), fractional area change (FAC), longitudinal strain (LS). Aims of this study were to evaluate the feasibility and accuracy of RV analysis with OB in a large series of patients. Methods We studied 35 normals and 105 patients with different pathologies. Each patient underwent a complete 2DE and 3DE with OB 3DRV evaluation. Results were compared with the conventional off-line software (OFL) and with the 2D- derived corresponding values. A subgroup of 22 patients underwent also cardiac CMR. Results: OB RV reconstruction was feasible in 133/140 cases (95%). Imaging quality was good in 84%. Mean time for 3DE acquisition was 73.8±24 sec, for RV OB reconstruction 97,5±33 sec and for OFL analysis 129±52 sec (plus dataset loading 80±24 sec). OB and OFL 3DE RV volumes and EF were similar. 3DE derived FSA and LS (but not TAPSE) were similar to 2DE values and correlated with tissue Doppler systolic peak velocity, RV dP/dt, systolic pulmonary pressure and RV myocardial performance index. OB RV volumes and EF well correlated with CMR. (bias+SD: - 21.5±20 ml for EDV; -8.2±12.4 ml for ESV; -1± 5.9% for EF). Conclusion. OB 3DE method is feasible, simple, and time saving. It easily provides 3DE RV volumes and multiple functional parameters. Off-line operator border adjustment is actually recommended to obtain a more accurate 3DE derived TAPSE.
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Contributors: Yu-Chieh David Chen
Date: 2019-09-11
... Raw data for several feeding assays (2-choice food preference assay, activity recording cafe (ARC) assay, food consumption assay, optogenetic ARC), pharyngeal calcium imaging, and trans-tango mapping of the pharyngeal second-order neuron.
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Contributors: César Alameda
Date: 2019-09-11
... Research hypothesis: Past medical history, symptoms and signs in a person who suffers an acute exacerbation of COPD (AECOPD) that is treated in primary care (PC) allows for predicting if they will die in the short term. Methods: Between December 2013 and November 2014, we studied people aged 40 and over seen for AECOPD in 148 health centres in Spain. Demographic variables, past medical history and signs and symptoms of the patients were collected. A logistic regression model for mortality from any cause was derived 30 days after the last PC visit. Findings: There were 1696 AECOPD included in the analysis. Seventeen patients (1%) died during follow-up. A clinical prediction rule was derived with the exacerbations suffered in the last 12 months, age and heart rate, with an area under the curve operator characteristic of 0.792 (95% confidence interval, 0.692 - 0.891) and good calibration. This rule stratifies patients into three categories of risk and suggests to the physician a different action for each: managing low-risk patients in PC, referring high-risk patients to hospitals and taking other criteria into account for decision-making in patients with medium risk. Interpretation: It is possible to accurately estimate the risk of death due to the exacerbation of COPD without the need to use complex instruments. This rule can help GPs optimize the diagnostic and therapeutic means used in these patients.
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Contributors: Varsha Singh
Date: 2019-09-11
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Contributors: Raul Andres Martinez Uribe
Date: 2019-09-11
... This directory contains a dataset of the experimental design of a randomized block factorial design in a 4 x 3 scheme with four replications. One factor consisted of 4 harvest times that represented four phenological stages of sorghum: pre-flowering (PF), flowering (F); milk grain (MG); hard grain (HG). The other factor for 3 different sources of potassium fertilization: T0 - potassium chloride, T1- potassium sulfate T2- potassium nitrate.
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Contributors: Javad Seyfi, Behnaz Najaf Oshani, Iman Hejazi, hossein Ali Khonakdar, Seyed Mohammad Davachi
Date: 2019-09-11
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Contributors: Silvia Liu
Date: 2019-09-11
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Contributors: Silvia Liu
Date: 2019-09-11
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Contributors: hua cheng
Date: 2019-09-11
... Attached data are raw data that can perform the meta analysis of this article using REVMAN software, and the extracted time to event data from Feng's study named Feng study .sav, of which we can open and run it using SPSS software.
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