gebhart/patrepeval huggingface dataset:
Suitability of a diamine functionalized metal–organic framework for direct air capture (2023)

The increase in the atmospheric carbon dioxide level is a significant threat to our planet, and therefore the selective removal of CO<sub>2</sub> from the air is a global concern. Metal-organic frameworks (MOFs) are a class of porous materials that have shown exciting potential as adsorbents for CO<sub>2</sub> capture due to their high surface area and tunable properties. Among several implemented technologies, direct air capture (DAC) using MOFs is a promising strategy for achieving climate targets as it has the potential to actively reduce the atmospheric CO<sub>2</sub> concentration to a safer levels. In this study, we investigate the stability and regeneration conditions of <i>N</i>,<i>N</i>'-dimethylethylenediamine (mmen) appended Mg<sub>2</sub>(dobpdc), a MOF with exceptional CO<sub>2</sub> adsorption capacity from atmospheric air. We employed a series of systematic experiments including thermogravimetric analysis (TGA) coupled with Fourier transformed infrared (FTIR) and gas chromatography mass spectrometer (GCMS) (known as TGA-FTIR-GCMS), regeneration cycles at different conditions, control and accelerated aging experiments. We also quantified CO<sub>2</sub> and H<sub>2</sub>O adsorption under humid CO<sub>2</sub> using a combination of data from TGA-GCMS and coulometric Karl-Fischer titration techniques. The quantification of CO<sub>2</sub> and H<sub>2</sub>O adsorption under humid conditions provides vital information for the design of real-world DAC systems. Our results demonstrate the stability and regeneration conditions of mmen appended Mg<sub>2</sub>(dobpdc). It is stable up to 50% relative humidity when the adsorption temperature varies from 25-40 °C and the best regeneration condition can be achieved at 120 °C under dynamic vacuum and at 150 °C under N<sub>2</sub>.
A TrueTime Extension for Instruction-level Timing and Multi-stack Support (2019)

This paper presents an extension to TrueTime, a widely used toolbox for co-simulation of networked real-time control systems in the block-oriented modeling and simulation environment MATLAB/Simulink. TrueTime provides an implementation of a real-time kernel as a Simulink block, which is able to execute a set of tasks and interrupt handlers under various scheduling schemes. By annotating the controller code with platform-specific timing information, it thereby allows to observe the temporal behavior and scheduling effects arising from the actual controller implementation in closed loop with the plant. This goes beyond traditional development approaches within the synchronous (reactive) block-diagram formalism of Simulink, which typically ignores execution times and jitter. However, TrueTime is said not to be suited for industrial (legacy) applications, mainly due to its structural requirements on the controller code. We propose an alternative execution mechanism that overcomes this limitation and fits with typical controller code as, for example, generated by the Simulink/Embedded Coder. Optionally, tasks may have individual execution stacks and may also execute as individual threads, even allowing for accelerated simulation on multi-core simulation hosts. Furthermore, this introduces support for instruction level timing and deeply branched function call graphs, without distorting the code structure. A case study demonstrates the applicability of our approach.
The field assisted turn-off thyristor: A regenerative device with voltage controlled turn-off (1987)

A regenerative device with voltage controlled turn-off, the field assisted turn-off (FATO) thyristor, is described. This shorted-cathode device incorporates an MOS gate fabricated along the sidewall of a plasma-etched trench. When the thyristor is in the on state and a negative voltage is applied to this gate, holes are pulled from the electron-hole plasma towards the sidewall, travel up the sidewall and are collected by a P <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> region shorted to the cathode. To maintain charge neutrality, then, the N <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> cathode stops injecting electrons and the device comes out of regeneration. In this manner, the devices thus far fabricated can turn off a current density of 8 A/cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> in excess of the holding current. By ramping the voltage on the off gate more rapidly, a current density of 40 A/cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> in excess of the holding current can be turned off, with a displacement current through the off gate of 1/20 of the anode current in excess of the holding current.
Silicon Microring-Resonator-Based Modulation and Demodulation of DQPSK Signals (2008)

We propose ultra-small DQPSK modulators and demodulators based on silicon microring-resonators at 20 Gb/s, which may require chip size of only tens of μm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> . BER of <10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-9</sup> ; is achieved in back-to-back case.
Asymmetric Synthesis of Maraviroc (UK‐427,857) (2010)

Abstract The asymmetric synthesis of Maraviroc (UK‐427,857), a chemochine receptor 5 (CCR‐5) receptor antagonist, based on an expeditious organocatalytic enantioselective assembly of the chiral β‐amino aldehyde key fragment is presented. The reactions were performed on a gram‐scale and allow for the rapid construction of new Maraviroc analogues.
Multiple particle filtering for tracking wireless agents via Monte Carlo likelihood approximation (2019)

Abstract The localization of multiple wireless agents via, for example, distance and/or bearing measurements is challenging, particularly if relying on beacon-to-agent measurements alone is insufficient to guarantee accurate localization. In these cases, agent-to-agent measurements also need to be considered to improve the localization quality. In the context of particle filtering, the computational complexity of tracking many wireless agents is high when relying on conventional schemes. This is because in such schemes, all agents’ states are estimated simultaneously using a single filter. To overcome this problem, the concept of multiple particle filtering (MPF), in which an individual filter is used for each agent, has been proposed in the literature. However, due to the necessity of considering agent-to-agent measurements, additional effort is required to derive information on each individual filter from the available likelihoods. This is necessary because the distance and bearing measurements naturally depend on the states of two agents, which, in MPF, are estimated by two separate filters. Because the required likelihood cannot be analytically derived in general, an approximation is needed. To this end, this work extends current state-of-the-art likelihood approximation techniques based on Gaussian approximation under the assumption that the number of agents to be tracked is fixed and known. Moreover, a novel likelihood approximation method is proposed that enables efficient and accurate tracking. The simulations show that the proposed method achieves up to 22% higher accuracy with the same computational complexity as that of existing methods. Thus, efficient and accurate tracking of wireless agents is achieved.
ChemInform Abstract: An Approach to a Carbocyclic Analogue of Cyclic Adenosine 5′‐ Diphosphate Ribose. The Synthesis and Bisphosphorylation of N1‐((1S,3R) ‐3‐(Hydroxymethyl)cyclopent‐1‐yl)inosine. (1997)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Spatio-chromatic decorrelation by shift-invariant filtering (2011)

In this paper we derive convolutional filters for colour image whitening and decorrelation. Whilst whitening can be achieved via eigendecomposition of the image patch co-variance, this operation is neither efficient nor biologically plausible. Given the shift invariance of image statistics, the covariance matrix contains repeated information which can be eliminated by solving directly for a per pixel linear operation (convolution). We formulate decorrelation as a shift and rotation invariant filtering operation and solve directly for the filter shape via non-linear least squares. This results in opponent-colour lateral inhibition filters which resemble those found in the human visual system. We also note the similarity of these filters to current interest point detectors, and perform an experimental evaluation of their use in this context.
The Idea of an Essay, Volume 3: Talking Back, Reading Letters, and Examining Logic (2016)

Our MissionHello from Cedarville University, and thank you for your interest in the Department of English, Literature, and Modern Languages.Our programs produce men and women who communicate effectively and think deeply, cross-culturally, and creatively about the ideas that have shaped and continue to shape our world.Our mission is to challenge students to go beyond expectations.Henry David Thoreau once wrote that we hit only what we aim at and thus ought to aim at something high.We agree -aim high
Overcoming the rise in local deposit resistance during electrophoretic deposition via suspension replenishing (2022)

Nanomaterials have unique properties, functionalities, and excellent performance, and as a result have gained significant interest across disciplines and industries. However, currently, there is a lack of techniques that can assemble as-synthesized nanomaterials in a scalable manner. Electrophoretic deposition (EPD) is a promising method for the scalable assembly of colloidally stable nanomaterials into thick films and arrays. In EPD, an electric field is used to assemble charged colloidal particles onto an oppositely charged substrate. However, in constant voltage EPD the deposition rate decreases with increasing deposition time, which has been attributed in part to the fact that the electric field in the suspension decreases with time. This decreasing electric field has been attributed to two probable causes, (i) increased resistance of the particle film and/or (ii) the growth of an ion-depletion region at the substrate. Here, to increase EPD yield and scalability we sought to distinguish between these two effects and found that the growth of the ion-depletion region plays the most significant role in the increase of the deposit resistance. Here, we also demonstrate a method to maintain constant deposit resistance in EPD by periodic replenishing of suspension, thereby improving EPD's scalability.
Blood-ocular barrier breakdown in eyes with ocular melanoma. A potential role for vascular endothelial growth factor/vascular permeability factor. (1995)

A series of 130 eyes with ocular melanomas, 19 normal eyes, and 18 eyes affected with other disorders leading to blood-ocular barrier (BOB) breakdown were immunohistochemically stained for albumin to localize sites of BOB failure within the retina, ciliary body, and iris. Thirty-nine of the eyes containing melanomas and all of the other eyes were also immunohistochemically stained for vascular endothelial growth factor (VEGF), to investigate its potential role as a mediator for BOB failure. Eyes with melanomas showed widespread leakage through the retinal pigment epithelium, and 58% demonstrated leakage from retinal vessels in the proximity of the tumor. BOB failure remote from the tumor also occurred in retina (50%), optic nerve head (77%), ciliary body (51%), and iris (51%), suggesting that a soluble mediator may be involved. VEGF was demonstrated intraretinally in the proximity of (46%) and remote from (24%) melanomas and in eyes affected by other disease processes, particularly those involving neoplasia or retinal detachments, usually within particular cell populations (ie, retinal vessel walls, ganglion cells, inner or outer nuclear layers, retinal pigment epithelium). VEGF localization in retina, ciliary body, and iris often coincided with sites of extravasated albumin. Preincubation of albumin or VEGF antibodies with normal serum or VEGF peptide, respectively, eliminated or markedly reduced all immunoreactivity. Only 1 of 14 normal postmortem eyes and 0 of 5 normal surgically removed eyes showed VEGF positivity in the retina, 5 of 19 normal eyes had weak positivity in the ciliary body, and VEGF was not demonstrated in the iris of normal eyes. VEGF cannot account for all of the BOB failure associated with ocular melanomas, but appears likely to play a contributing role in many cases.
Unified Analysis of SWIPT Relay Networks with Noncoherent Modulation (2017)

Simultaneous wireless information and power transfer (SWIPT) relay networks represent a paradigm shift in the development of wireless networks, enabling simultaneous radio frequency (RF) energy harvesting (EH) and information processing. Different from conventional SWIPT relaying schemes, which typically assume the availability of perfect channel state information (CSI), here we consider the application of noncoherent modulation in order to avoid the need of instantaneous CSI estimation/tracking and minimise the energy consumption. We propose a unified and comprehensive analytical framework for the analysis of time switching (TS) and power splitting (PS) receiver architectures with the amplify-and-forward (AF) protocol. In particular, we adopt a moments-based approach to derive novel expressions for the outage probability, achievable throughput, and average symbol error rate (ASER) of the considered SWIPT system. We quantify the impact of several system parameters, involving relay location, energy conversion efficiency, and TS and PS ratio assumptions, imposed on the EH relay terminal. Our results reveal that the throughput performance of the TS protocol is superior to that of the PS protocol at lower receive signal-to-noise (SNR) values, which is in contrast to the point-to-point SWIPT systems. An extensive Monte Carlo simulation study is presented to corroborate the proposed analysis.
Enabling Extreme Fast Charging through Control of Li Deposition Overpotential on Graphite Electrodes (2022)

Currently produced electric vehicles (EVs) rely on the use of lithium ion battery technology due to its high energy and power density.1 However, a major barrier facing the adoption of electric vehicles is that currently utilized Li-ion batteries take significantly longer to recharge (~ 30 minutes) compared to the time necessary to refuel vehicles powered by internal combustion engines (< 10 minutes). Thus, the need to develop Li-ion batteries which can be charged in approximately 10 minutes (6 C rate) without sacrificing range, cost, or cycle life is critical for the widespread implementation of EVs. The major barrier preventing extreme fast charging of Li-ion batteries is the occurrence of Li plating at the graphite anode, which operates at a working potential between 0.05 – 0.1 V vs. Li/Li+.2-4 When the anode is polarized below 0V, Li deposition on the graphite surface is favored over intercalation, and plating occurs. Because of the high reactivity of Li metal, subsequent reaction with the electrolyte occurs, consuming some of the active lithium and resulting in cell capacity loss. To suppress Li plating, multiple strategies have been demonstrated with only limited effectiveness, and new approaches are needed to enable cycling at extreme fast charging rates. In contrast to previous approaches for suppressing Li plating, in this project we utilized an entirely new concept where the overpotential for Li metal deposition at the electrode surface was deliberately increased, thus inhibiting Li metal deposition during extreme fast charging. This was be accomplished by coating graphite electrodes with ultrathin metal coatings which have high overpotentials unfavorable for lithium deposition. The nanometer scale thickness of the metal coatings enabled the function of the graphite electrode to be maintained and preserve state of the art energy density. Published results probed the properties of the metallic surface coatings and their effectiveness at suppressing Li deposition and reducing capacity fade under XFC.1,2 Batteries incorporating graphite electrodes with high metal film loadings exhibited an improvement in capacity retention after 500 fast (10-minute) charge cycles of ~9% compared to uncoated anodes. Li metal deposition quantified by X-ray diffraction supported these findings, with higher loading metal films exhibiting enhanced Li plating suppression compared to lower loading films. The results highlight the use of nanoscale functional surface coatings for prevention of Li plating during battery fast charging. These results establish an effective method using interfacial modification to achieve deliberate control of Li-metal deposition overpotential and reduction of lithium plating on graphite.
Time-Resolved Passive Cavitation Mapping Using the Transient Angular Spectrum Approach (2021)

Passive cavitation mapping (PCM), which generates images using bubble acoustic emission signals, has been increasingly used for monitoring and guiding focused ultrasound surgery (FUS). PCM can be used as an adjunct to magnetic resonance imaging to provide crucial information on the safety and efficacy of FUS. The most widely used algorithm for PCM is delay-and-sum (DAS). One of the major limitations of DAS is its suboptimal computational efficiency. Although frequency-domain DAS can partially resolve this issue, such an algorithm is not suitable for imaging the evolution of bubble activity in real time and for cases in which cavitation events occur asynchronously. This study investigates a transient angular spectrum (AS) approach for PCM. The working principle of this approach is to backpropagate the received signal to the domain of interest and reconstruct the spatial-temporal wavefield encoded with the bubble location and collapse time. The transient AS approach is validated using an in silico model and water bath experiments. It is found that the transient AS approach yields similar results to DAS, but it is one order of magnitude faster. The results obtained by this study suggest that the transient AS approach is promising for fast and accurate PCM.
Phase 1 study to determine the safety and dosing of autologous PBMCs modified to present HPV16 antigens (SQZ-PBMC-HPV) in HLA-A*02+ patients with HPV16+ solid tumors (2023)

We conducted a dose escalation Phase 1 study of autologous PBMCs loaded by microfluidic squeezing (Cell Squeeze<sup>®</sup> technology) with HPV16 E6 and E7 antigens (SQZ-PBMC-HPV), in HLA-A*02+ patients with advanced/metastatic HPV16+ cancers. Preclinical studies in murine models had shown such cells resulted in stimulation and proliferation of antigen specific CD8+ cells, and demonstrated antitumor activity. Administration of SQZ-PBMC-HPV was every 3 weeks. Enrollment followed a modified 3+3 design with primary objectives to define safety, tolerability, and the recommended Phase 2 dose. Secondary and exploratory objectives were antitumor activity, manufacturing feasibility, and pharmacodynamic evaluation of immune responses. Eighteen patients were enrolled at doses ranging from 0.5 × 10<sup>6</sup> to 5.0 × 10<sup>6</sup> live cells/kg. Manufacture proved feasible and required < 24 h within the overall vein-to-vein time of 1 - 2 weeks; at the highest dose, a median of 4 doses were administered. No DLTs were observed. Most related TEAEs were Grade 1 - 2, and one Grade 2 cytokine release syndrome SAE was reported. Tumor biopsies in three patients showed 2 to 8-fold increases in CD8+ tissue infiltrating lymphocytes, including a case that exhibited increased MHC-I+ and PD-L1+ cell densities and reduced numbers of HPV+ cells. Clinical benefit was documented for the latter case. SQZ-PBMC-HPV was well tolerated; 5.0 × 10<sup>6</sup> live cells/kg with double priming was chosen as the recommended Phase 2 dose. Multiple participants exhibited pharmacodynamic changes consistent with immune responses supporting the proposed mechanism of action for SQZ-PBMC-HPV, including patients previously refractory to checkpoint inhibitors.
Distributed access control in wireless networks (2018)

In mobile ad hoc networks packets are forwarded collaboratively by all nodes in the network. As intermediate nodes are not aware of local security policies at destination nodes, they typically continue forwarding unwanted packets, spending a considerable waste of bandwidth and power. The situation can be exacerbated when a particular node is under attack. Due to open network architecture, shared wireless medium, stringent resource constraints, and highly dynamic network topology deploying firewalls in a mobile wireless environment is not straight forward. In this paper, we develop a novel distributed access control scheme for mobile networks in which nodes collaboratively perform packet filtering to address resource squandering. The proposed scheme introduces techniques to distribute discarding rules suitable for both proactive and reactive routing protocols. It also proposes efficient rule placement mechanisms to maximize the number of packets discarded remotely before they reach the destination. The performed simulation show that by distributing only 1% of the rules, about 42% of the unwanted traffic is discarded before it reaches the destination, which significantly saves the network resources.
New High Directivity Coupler Design Using Feed-forward Compensation Technique (2008)

In this paper, an original high directivity directional coupler is presented. The proposed structure consists of a dual-directional coupler connected at its coupled terminations to a feed-forward compensation circuit. The compensation circuit is used to increase the coupler isolation factor of the obtained directional coupler. The directivity of a commercial dual-directional coupler has been improved by 40 dB using the proposed method.
Wavefield decomposition of seabed node marine recordings (2013)

We test two methods for 3D wavefield decomposition of marine seismic data recorded on multicomponent sensors in a seabed node. The methods work on traces from one single shot into the node. Here, multicomponent refers to a combination of sensors that includes two or more closely spaced sensors such as a hydrophone, a geophone, an accelerometer, a rotational seismometer, a pressure derivative configuration of hydrophones, or a vertical particle velocity derivative configuration of hydrophones or geophones. The derivative can be a first-order derivative, a second-order derivative, or a higher-order derivative.