12,051 research outputs found
Balloon telescope studies of Venus
Determination of ice clouds and water vapor in Venus atmosphere from balloon observation
Atomistic Hydrodynamics and the Dynamical Hydrophobic Effect in Porous Graphene
Mirroring their role in electrical and optical physics, two-dimensional
crystals are emerging as novel platforms for fluid separations and water
desalination, which are hydrodynamic processes that occur in nanoscale
environments. For numerical simulation to play a predictive and descriptive
role, one must have theoretically sound methods that span orders of magnitude
in physical scales, from the atomistic motions of particles inside the channels
to the large-scale hydrodynamic gradients that drive transport. Here, we use
constraint dynamics to derive a nonequilibrium molecular dynamics method for
simulating steady-state mass flow of a fluid moving through the nanoscopic
spaces of a porous solid. After validating our method on a model system, we use
it to study the hydrophobic effect of water moving through pores of
electrically doped single-layer graphene. The trend in permeability that we
calculate does not follow the hydrophobicity of the membrane, but is instead
governed by a crossover between two competing molecular transport mechanisms.Comment: 6 pages, 3 figure
Emotion Learning and Memory in Schizophrenia
• Prior research indicates that processing of emotional information is particularly problematic for individuals with schizophrenia. • An important component of emotional processing is the accurate encoding and recall of emotionally valenced information. • The current study addresses this matter by investigating performance on a task assessing learning, recall, and recognition in patients with schizophrenia. • In this manner, recall of emotionally valenced information may be investigate
Memory device for two-dimensional radiant energy array computers
A memory device for two dimensional radiant energy array computers was developed, in which the memory device stores digital information in an input array of radiant energy digital signals that are characterized by ordered rows and columns. The memory device contains a radiant energy logic storing device having a pair of input surface locations for receiving a pair of separate radiant energy digital signal arrays and an output surface location adapted to transmit a radiant energy digital signal array. A regenerative feedback device that couples one of the input surface locations to the output surface location in a manner for causing regenerative feedback is also include
Preparation, analysis and release of simulated interplanetary grains into low Earth orbit
Astronomical observations which reflect the optical and dynamical properties of interstellar and interplanetary grains are the primary means of identifying the shape, size, and the chemistry of extraterrestrial grain materials. Except for recent samplings of extraterrestrial particles in near-Earth orbit and in the stratosphere observations were the only method of deducing the properties of extraterrestrial particles. In order to elucidate the detailed characteristics of observed dust, the observations must be compared with theoretical studies, some of which are discussed in this volume, or compared with terrestrial laboratory experiments. The formation and optical characterization of simulated interstellar and interplanetary dust with particular emphasis on studying the properties on irregularly shaped particles were discussed. Efforts to develop the techniques to allow dust experiments to be carried out in low-Earth orbit were discussed, thus extending the conditions under which dust experiments may be performed
Generalized Ultrasonic System for Microcomputer Controled Data Collection
A system developed by the NDE Group of the Los Alamos Scientific Laboratory for the automated scanning of objects with an axis of rotation is described. This system is still being expanded to allow greater versatility in the motions. Data which was collected using the system and some typical test objects are also presented and discussed
The Implementation of Diabetic Foot Care into Primary Care
Diabetes mellitus (DM) is one of the most common metabolic diseases worldwide. It can lead to complications in many parts of the body and can increase overall risk of dying prematurely (World Health Organization (WHO), 2016). Diabetic peripheral neuropathy (DPN) in the feet is one of the most frequent complications of DM (Wang et al., 2017). Other lower extremity complications which can occur as a result of diabetic foot complication (DFC) includes peripheral artery disease (PAD), infection, ulcer and amputation. One of the obstacles for preventing (DFC) is the lack of examinations of the feet in clinical practice (Feitosa et al., 2016). Guided by the Iowa Model Revised (Iowa Model Collaborative, 2017), The purpose of this 12- week project was to implement best practice recommendations for the provision of diabetic foot care into primary care. A review of literature was performed by the project leader (PL) which generated 11 pieces of relevant evidence that met the inclusion criteria. Participants of this project included 531 adult diabetic patients, ages 18-74, who were seen in the primary care setting. Best practice recommendation for interventions included: (a) provider history and foot physical assessment including provider use of the Semmes-Weinstein Monofilament (SWM) tool to assess for actual diabetic foot complication, (b) assessment of footwear, (c) provision of patient education, and (d) initiating multidisciplinary care by educating clinicians, planning a workflow, and providing ongoing feedback. The primary outcome measured was appropriate referrals, defined as a referral to the specialty clinic that is ordered by the provider for individuals with a SWM tool score of 3 and a ‘yes” for referral that has been documented by the provider in the EMR. Findings showed that the interventions improved appropriate referral (X2(1) = 72.657; p \u3c.001), as well as the secondary outcomes of provider foot assessment (X2(1) =93.209; p \u3c.001) and patient follow-up compliance to the Podiatry clinic (PC) following referral (X2(1) = 88.7014; p \u3c.001)
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