A novel prestack sparse azimuthal AVO inversion

In this paper we demonstrate a new algorithm for sparse prestack azimuthal AVO inversion. A novel Euclidean prior model is developed to at once respect sparseness in the layered earth and smoothness in the model of reflectivity. Recognizing that methods of artificial intelligence and Bayesian computation are finding an every increasing role in augmenting the process of interpretation and analysis of geophysical data, we derive a generalized matrix-variate model of reflectivity in terms of orthogonal basis functions, subject to sparse constraints. This supports a direct application of machine learning methods, in a way that can be mapped back onto the physical principles known to govern reflection seismology. As a demonstration we present an application of these methods to the Marcellus shale. Attributes extracted using the azimuthal inversion are clustered using an unsupervised learning algorithm. Interpretation of the clusters is performed in the context of the Ruger model of azimuthal AVO

Subxiphoid uniportal video-assisted thoracoscopic surgery for synchronous bilateral lung resection

<p><b>Objectives</b>: With advancements in medical imaging and current emphasis on regular physical examinations, multiple pulmonary lesions increasingly are being detected, including bilateral pulmonary lesions. Video-assisted thoracic surgery is an important method for treating such lesions. Most of video-assisted thoracic surgeries for bilateral pulmonary lesions were two separate operations. Herein, we report a novel technique of synchronous subxiphoid uniportal video-assisted thoracic surgery for bilateral pulmonary lesions.</p> <p><b>Methods</b>: Synchronous bilateral lung resection procedures were performed through a single incision (~4 cm, subxiphoid).</p> <p><b>Results</b>: This technique was used successfully in 11 patients with bilateral pulmonary lesions. There were no intraoperative deaths or mortality recorded at 30 days.</p> <p><b>Conclusions</b>: Our results show that the subxiphoid uniportal thoracoscopic procedure is a safe and feasible surgical procedure for synchronous bilateral lung resection with less surgical trauma, postoperative pain and better cosmetic results in qualifying patients. Further analysis is ongoing, involving a larger number of subjects.</p

Processes for constructing the three cohorts for estimation of incidence of co-infections (HIV-HSV-2, HIV-Syphilis, HSV-2-Syphilis).

<p>Processes for constructing the three cohorts for estimation of incidence of co-infections (HIV-HSV-2, HIV-Syphilis, HSV-2-Syphilis).</p

Associations of the socio-demographic characteristic with loss of follow-up among MSM in Beijing, China, using univariate logistic regression model (N = 962).

<p>Associations of the socio-demographic characteristic with loss of follow-up among MSM in Beijing, China, using univariate logistic regression model (N = 962).</p

Self-Supported FeNi‑P Nanosheets with Thin Amorphous Layers for Efficient Electrocatalytic Water Splitting

Low-cost and efficient catalytic electrode toward both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is strongly attractive for overall water splitting. Herein, a 3D bifunctional electrode of FeNi phosphide nanosheets with a thin amorphous layer on Nickel foam (FeNi-P/NF) is designed via phosphorizing NiFe-layered double hydroxide-coated nickel foam (FeNi LDH/NF) in red phosphorus vapor at 500 °C. Benefiting from the unique architecture with increased exposure and accessibility of active sites, the electrode exhibits excellent electrocatalytic performance toward both HER and OER in 1.0 M NaOH with 102 and 224 mV low overpotentials to achieve a catalytic current density of 10 mA cm^–2, respectively. As a bifunctional electrode, the FeNi-P/NF can release a current density of 10 mA cm^–2 at a low cell voltage of 1.57 V and 100 mA cm^–2 at 1.82 V in an alkali electrolyzer, possessing significant durability over 100 h electrolysis at high current density of 100 mA cm^–2

Associations between sexual behaviors and willingness to accept PrEP.

<p>Abbreviation: CI, confidential interval; OR, odds ratio; PrEP, pre-exposure prophylaxis; STD, sexually transmitted diseases; WTA, willingness to accept.</p

The associations of willingness to accept PrEP with potential factors in multivariate logistic regression model.

<p>Abbreviation: ARV, antiretroviral; CI, confidential interval; OR, odds ratio; PrEP, pre-exposure prophylaxis.</p

Associations between perceived PrEP benefits/risks and willingness to accept PrEP.

<p>Abbreviation: ARV, antiretroviral; AIDS, Acquired Immune Deficiency Syndrome; CI, confidential interval; OR, odds ratio; PrEP, pre-exposure prophylaxis; WTA, willingness to accept.</p