gebhart/patrepeval huggingface dataset:
ChemInform Abstract: SYNTHESIS AND BIOLOGICAL EVALUATION OF FRAGMENTED DERIVATIVES OF TETRAHYDROISOQUINOLINES. 3. TRIMETOQUINOL STUDIES (1976)

Abstract Aus dem 3,4‐Bis‐benzyloxy‐benzaldehyd (I) wird das Dithian (II) hergestellt, das über das mit tert.‐Butyllithium hergestellte Anion zu (III) benzyliert wird.
Poly(siloxane‐urethane) crosslinked structures obtained by sol‐gel technique (2011)

Abstract Poly(siloxane‐urethane) crosslinked structures were prepared from isophorone diisocyanate, α,ω‐bis(hydroxybutyl)oligodimethylsiloxane and a new hybrid diol containing hydrolysable SiOC 2 H 5 groups besides OH groups. The latest was synthesized by the acid‐catalyzed reaction between 1,3‐bis(3‐glycidoxypropyl)tetramethyldisiloxane and 3‐aminopropyltriethoxysilane. The formations of the urethane groups along the polymer backbone as well as the formation of the silica domains were first confirmed by the presence of the specific bands in Fourier transform infrared spectra. The resulted materials were characterized using differential scanning calorimetry, thermogravimetric analysis and scanning electron microscopy. The results of the dynamic mechanical analysis (DMA) performed at various frequencies revealed shape memory capabilities for some of the obtained structures. The silica formed because of the hydrolysis‐condensation reactions proved to have reinforcing effect upon siloxane‐urethane structure also evidenced by DMA and increasing water vapor sorption capacity as was measured by dynamic vapor sorption. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011
Experimental verification of formation control with distributed cameras (2009)

Formation control experiments are performed using two robots, each equipped with a camera. When both robots are fully informed of the reference velocity, a decentralized feedback control, which achieves the desired relative position and the reference velocity, is experimentally verified. Another adaptive design is implemented in the situation where only one robot has the full reference velocity information and the other robot estimates the reference velocity. The performances of the experiments are analyzed and compared with different feedback gains and adaptation gains. Typical experimental results show that the difference between individual camera measurements leads to steady state error in practice. As a preliminary investigation, this fact is analyzed theoretically with the measurement difference modeled as constant disturbance.
Design of the Squared Daisy: A Multi-Mode Energy Harvester, with Reduced Variability and a Non-Linear Frequency Response (2019)

With the rise of the Internet of Things (IoT) and the ever-increasing number of integrated sensors, the question of powering these devices represents an additional challenge. The traditional approach is to use a battery; however, harvesting energy from the environment seems to be the most practical approach. To that end, the use of piezoelectric MEMS energy has been proven as a potential power source in a wide range of applications. In this work, a proof of concept for a new architecture for MEMS energy harvesters is presented. The influence of the dimensions and different characteristics of these designs is discussed. These designs have been proven to be resilient to process variation thanks to their unique architecture. This work presents the use of vibration enhancement petals in order to widen the bandwidth of the energy harvester and provide a non-linear frequency response. The use of these vibration enhancement petals has allowed the fabrication of three design variations, each using an area of 1700 µm by 1700 µm. These designs have an operating bandwidth between 3.9 kHz and 14.5 kHz and can be scaled to achieve other targeted resonant frequencies.
Compact Wideband Multimode Dielectric Resonator Antennas Fed With Parallel Standing Strips (2012)

As the number of resonances increases, it becomes difficult to improve and maintain the performance of dielectric resonator antennas (DRAs), over the expanded impedance bandwidth. To remove unwanted modes, adjust the frequency distance between individual modes, reduce antenna size and cross polarization, and preserve radiation patterns in a wideband configuration, a dielectric resonator antenna fed with parallel standing strips is proposed in this paper. The use of parallel standing strips provides several degrees of freedom in the design procedure to enhance the DRA characteristics. To validate the effectiveness of this approach, two DRAs with parallel standing strips were fabricated using different procedures. The antennas were tested and characterized. The measured results are in good agreement with simulation ones. A 46% size reduction was achieved for the multimode DRA. The impedance bandwidth of the proposed DRA of simple rectangular shape was over 60% with a measured gain ranging from 5.5 to 9.5 dBi. Broadside radiation patterns with fairly low cross polarizations can be maintained over the impedance bandwidth. The simulated radiation efficiency is more than 96% within the frequency band.
Interaction of a macrocyclic bisacridine with DNA (1990)

The binding of the macrocycle SDM to DNA was investigated by visible spectroscopy, stopped-flow kinetics, and NMR spectroscopy. SDM is composed of two 9-aminoacridines linked via the amino groups by a spermine side chain and via the 4-positions by a N,N'-[(methylthio)ethyl]succinamide side chain [Zimmerman, S. C., Lamberson, C. R., Cory, M., & Fairley, T. A. (1989) J. Am. Chem. Soc. 111, 6805-6809]. The visible spectrum of SDM bound to poly[d(A-T)]2 or poly[d(G-C)]2 is red-shifted relative to the spectrum of SDM alone and displays considerable hypochromicity. Results from titrations of SDM with polymer indicate a binding site size of three base pairs per macrocycle. The dissociation constant for SDM bound to either poly[d(A-T)]2 or poly[d(G-C)]2 is an order of magnitude lower than that for a similar bisacridine linked only by a spermine side chain. In addition, the dependence of the dissociation constant on ionic strength is significantly reduced. NMR studies of SDM complexes with poly[d(A-T)]2 or a tetramer, d(CGCG)2, show that intercalation is the mode of binding. The magnitudes of the chemical shift differences for SDM aromatic protons in the free and bound states support intercalation with the acridine ring systems essentially parallel to the long axis of the base pairs. Cross peaks from NOESY spectra of the SDM complex with d(CGCG)2 further support this mode of binding and provide information on the structure of the complex. The results are analyzed for consistency with each of three binding models: (i) bisintercalation with the two side chains in the same groove; (ii) bisintercalation according to the neighbor-exclusion principle with the two side chains in opposite grooves; and (iii) bisintercalation with two side chains in opposite grooves but with violation of the neighbor-exclusion principle. Model i is found to be unlikely on the basis of all evidence obtained, including preliminary modeling studies. Both models ii and iii can be reconciled with the experimental evidence and from a modeling standpoint are energetically feasible.
Deep Learning for Nonlinear Diffractive Imaging (2018)

Image reconstruction under multiple light scattering is crucial for a number of important applications in cell microscopy and tissue imaging. The reconstruction problem is often formulated as a nonconvex optimization, where a nonlinear measurement model is used to account for multiple scattering and a regularizer is used to enforce the prior on the object. In this letter, We propose a powerful alternative to this optimization-based view of image reconstruction by designing and training a deep convolutional neural network (CNN) for inverting multiple scattering. Simulations show that the proposed formulation is substantially faster and achieves higher imaging quality compared to the state-of-the-art methods based on optimization.
Supplementary Table S3 from Systematic Interrogation of 3q26 Identifies <i>TLOC1</i> and <i>SKIL</i> as Cancer Drivers (2023)

&lt;p&gt;Supplementary Table S3 - XLSX file 12K, Proteins that associate with TLOC1&lt;/p&gt;
Mathematical Models of Within-Host and Transmission Dynamics to Determine Effects of Malaria Interventions in a Variety of Transmission Settings (2013)

A model for Anopheles population dynamics and malaria transmission is combined with a within-host dynamics microsolver to study baseline transmission, the effects of seasonality, and the impact of interventions. The Garki Project is recreated in simulation of the pre-intervention baseline and the different combinations of interventions deployed. Modifications are introduced, and longer project duration, extension of dry-season spraying, and transmission-blocking vaccines together achieve local elimination in some conditions. A variety of interventions are simulated in transmission settings that vary in transmission intensity and underlying seasonality. Adding vaccines to existing vector control efforts extends the ability to achieve elimination to higher baseline transmission and less favorable vector behavior. If one species of the Anopheles gambiae species complex feeds disproportionately outdoors for a given complex average behavior, vector control impacts are less than for a single species. Non-zero dry-season transmission limits seasonal oscillation in parasite dynamics and impact of wet-season interventions.
Routine quantification of 54 allergens in fragrances using comprehensive two‐dimensional gas chromatography‐quadrupole mass spectrometry with dual parallel secondary columns. Part I: Method development (2017)

Abstract The forthcoming extension of the regulated fragrance allergen number is raising a challenge: the previously developed quantification methods need to be drastically improved in terms of rapidity, without altering their reliability. This work describes a procedure based on comprehensive bidimensional gas chromatography, hyphenated with a low‐cost quadrupole mass spectrometer (GCxGC‐QMS). The second chromatographic dimension was operated in a dual configuration, consisting of two parallel secondary columns, one being connected to the QMS, the other to a flame ionization detector (FID). This not only allowed optimization of the chromatographic gas flows when compared to the usual single second dimension, but it also enabled the use of the FID signal to extend the quantification range from 2 to 10,000 mg/kg. The QMS was used at a low level (2‐100 mg/kg), where coelutions are frequent, and the FID was used for the most abundant analytes (100‐10,000 mg/kg) with a low risk of significant interferences. To assess the identity and purity of the analyte peak at low level, we propose a strategy and summarize it in a decisional tree. To our knowledge, this represents the first fully developed quantification method based on a GCx2GC‐QMS/FID system. In contrast to other methods, it enables the quantification of a wide variety of analytes in fragrances in a single run, without requiring a series of sample dilutions to match the calibration range.
Picosecond thin-disk amplifiers with high average power for pumping optical parametric amplifiers (2012)

Short-pulse-pumped optical parametric amplification (OPA) calls for picosecond lasers with high average powers. We report on the current thin-disk laser development, the synchronization between pump and seed sources and first OPA results.
Phase aberration correction using dynamic time warping (2002)

Dynamic time warping is an efficient method in speech recognition. In this presentation, it is shown that dynamic time warping can be applied to the estimation of phase aberration in ultrasonic imaging as well. Together with a weighting function that considers the local strength of the inspected ultrasonic signals and a modified partial array reference correction, dynamic time warping proved to be a robust estimation scheme for phase aberration. This is demonstrated for aberrated synthetic and experimental data in a comparative evaluation of dynamic time warping together with well-known aberration correction techniques like cross-correlation and speckle look-back.
A Case of Selective Internal Radiation (SIR)-Microsphere-induced Gastritis (2013)

Purpose: Colon cancer (CRC) is one of the most common cancers in the world. Although surgical resection with neoadjuvant therapy is effective in most patients, some develop unresectable metastatic disease, commonly to the liver. One novel approach, selective internal radiation therapy (SIRT) with yttrium 90-labeled microspheres (Y-90), administered via hepatic artery branches, is a method used to selectively deliver radiation therapy to inoperable liver metastases. A few reports have shown benefit. However, there have been reports where microspheres get caught in the gastric and duodenal capillary beds leading to complications. We report herein a case of selective internal radiation (SIR)-microsphere-induced gastritis. A 66-year-old woman was diagnosed with CRC in 2010. Imaging demonstrated a right colonic mass and liver metastases. She underwent right hemicolectomy with neoadjuvant chemotherapy. She subsequently underwent SIRT with Y-90 in 2011. Several weeks after therapy, she developed abdominal pain and progressive weight loss. An esophagogastroduodenoscopy (EGD) revealed gastric ulcers. Pathology revealed foveolar hyperplasia, vascular ectasia, granulation tissue, and scattered Y-90 microspheres (Figure). Treatment with proton pump inhibitors (PPIs), carafate, and misoprostol did not provide benefit. Hyperbaric oxygen therapy was considered. The liver represents the most common site of metastases of CRC. Although surgical resection of solitary liver metastases can result in long-term survival, not all patients are candidates for surgery. For those patients, chemotherapy or other modalities including SIRT with Y-90 become options. However, retrograde migration of the microspheres into the gastric or duodenal circulation may occur. This can cause ulceration of the stomach and the duodenum. Treatment options include PPIs, carafate, misoprostol and hyperbaric oxygen therapy. With the anticipated increase in use of SIRT for hepatic malignancy treatment, clinicians should be aware of the potential for gastrointestinal complications from retrograde migration of Y-90 microspheres into the gastroduodenal circulation.Figure 2: Histopathology revealing foveolar hyperplasia, vascular ectasia, granulation tissue, and scattered selective internal yttrium 90-labeled radiation microspheres.
Electrolyte Reactions with the Surface of High Voltage LiNi[sub 0.5]Mn[sub 1.5]O[sub 4] Cathodes for Lithium-Ion Batteries (2010)

The reaction of an electrolyte (1 M LiPF6 in ethylene carbonate/dimethyl carbonate/diethyl carbonate, 1:1:1) with the surface of LiNi0.5Mn1.5O4 at various voltages (4.0-5.3 V vs Li) was investigated. Coin cells (Li/ LiNi0.5Mn 1.5O4) stored at low voltage (4.0-4.5 V vs Li) show low residual current, and ex situ analysis of the LiNi0.5Mn 1.5O4 surface by X-ray photoelectron spectroscopy (XPS) and IR spectroscopy suggests low concentrations of electrolyte decomposition products. Coin cells (Li/ LiNi0.5Mn1.5O4) stored at high voltage (4.7-5.3 V vs Li) show increased residual current, and ex situ analysis of the cathode surface by XPS and IR supports the presence of poly(ethylenecarbonate). © 2010 The Electrochemical Society.
A user-customizable energy-adaptive combined static/dynamic scheduler for mobile applications (2002)

In mobile applications, the energy consumed by operating system (OS) and application tasks primarily comes from a limited DC battery source, which imposes an upper bound to the amount of time available for execution of tasks. To achieve the best energy-aware quality of service (EQoS), it is important to prioritize the scheduling of critical tasks over non-critical tasks to improve overall performance while extending the battery life. Using the CSD (Combined Static/Dynamic) scheduler in the EMERALDS operating system as a basis, we developed EA-CSD (Energy-Adaptive CSD) with an energy-aware scheduling algorithm that executes tasks to achieve the effective use of limited energy by favoring low-energy and critical tasks. Our simulation of the EA-CSD shows that battery life can be extended up to about 100% with varying degrees of performance degradation of up to about 40%, and the actual values of both are fully customizable by the user through parametric adjustment.
Machine and Deep Learning for Drone Radar Recognition by Micro-Doppler and Kinematic criteria (2020)

Illegal, malicious or dangerous uses of drones, require developing systems capable of detecting, tracking and recognizing them in a non-collaborative way, and with enough anticipation in order to assign adapted interception means to the threat. The reduced size of autonomous aircraft makes it difficult to be detected over long distances with sufficient awareness based on conventional techniques, and seems more suitable for observation by radar sensors. However, the radiofrequency detection of this kind of object poses other difficulties to be solved due to their slow speed characteristics which can cause confusion with other mobile echoes like land vehicles, birds and vegetation movements agitated by atmospheric turbulence. It is therefore necessary to design robust classification methods for these echoes to ensure their discrimination relative to criteria characterizing their movements (micro-movements of their moving parts and kinematic movements of their main body).
Tissue Engineering: Engineering Silk Fibroin‐Based Nerve Conduit with Neurotrophic Factors for Proximal Protection after Peripheral Nerve Injury (Adv. Healthcare Mater. 2/2021) (2021)

The incorporation and delivery of neurotrophic factors that stimulate nerve repair in previously developed tunable enzymatically crosslinked silk fibroin-based conduits are presented. In article number 2000753 by Joaquim M. Oliveira and co-workers, glial cell line-derived neurotrophic factor (GDNF), acting upon motor and sensory neurons, also instigating angiogenesis, uses these conduits as a platform for its controlled delivery, enhancing motor and sensory regeneration both in vivo and in vitro.
Multiple Description Video Transcoding (2007)

In this paper we introduce the concept of multiple description video transcoding (MDVT). MDVT converts a single description encoded video into two or more descriptions at an intermediate node in the network. The objective of our MDVT approach is to adapt the video transmission to a multi-radio environment where two or more independent transmission paths exist between the intermediate node and the receiver. The sender does not have to be aware of the transcoding process and the multi-path transmission. MDVT can for instance be applied for multi-mode terminals that are simultaneously connected to two wireless access technologies, e.g., UMTS and WLAN. We compare MDVT with multiple description coding at the sender (MDC-S) as well as with MDC at the intermediate node (MDC-I) where the incoming single description video is decoded and re-encoded into multiple descriptions and the transmission is optimized separately for each path. We present a fast greedy method that can be used to perform multiple description video transcoding in real-time at low complexity. Our experimental results show that we can achieve performance similar to MDC-S where the sender has to be aware of the availability of multiple paths. Compared to MDC-I we observe more than 2 dB gain in reconstruction quality.
Hall factor in strainedp-type dopedSi1−xGexalloy (1996)

We have calculated the Hall factor in strained p-type ${\mathrm{Si}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Ge}}_{\mathit{x}}$ alloy grown on (001) Si, taking into account the detailed valence-band structure. Acoustic-phonon, nonpolar optical-phonon, alloy, and ionized-impurity scattering are included. It is demonstrated experimentally that the Hall factor can be reduced by a factor of 2 when alloying Si with Ge. Theoretically we have shown that the Hall factor is significantly reduced because of the nonparabolic and nonspherical effects in the valence-band structure. The theory explains experimental results very well. It is also shown that the low-temperature Hall factor is independent of scattering mechanisms. It depends only on the energy band structure. \textcopyright{} 1996 The American Physical Society.
In Situ Electrochemical X-ray Absorption Spectroscopy of Oxygen Reduction Electrocatalysis with High Oxygen Flux (2011)

An in situ electrochemical X-ray absorption spectroscopy (XAS) cell has been fabricated that enables high oxygen flux to the working electrode by utilizing a thin poly(dimethylsiloxane) (PDMS) window. This cell design enables in situ XAS investigations of the oxygen reduction reaction (ORR) at high operating current densities greater than 1 mA in an oxygen-purged environment. When the cell was used to study the ORR for a Pt on carbon electrocatalyst, the data revealed a progressive evolution of the electronic structure of the metal clusters that is both potential-dependent and strongly current-dependent. The trends establish a direct correlation to d-state occupancies that directly tracks the character of the Pt-O bonding present.
Polymeric variable optical attenuator based on long range surface plasmon polaritons (2006)

Proposed is a polymeric variable optical attenuator based on long range surface plasmon polaritons (LRSPPs) along a thin metal stripe embedded in polymers. The device is operated by controlling radiation loss of the LRSPP mode resulting from the temperature gradient of the polymer cladding caused by a heater. For guiding LRSPPs and efficient coupling of singlemode fibres, gold stripes 20 nm thick, 4 µm wide and 1 cm long are utilised. To obtain a long physical lifetime, the heater is formed on the top of the polymer cladding with a 200 nm Au film which is about ten times thicker than the thin metal waveguide. The fabricated device is characterised at a wavelength of 1.55 µm, exhibiting high attenuation of less than 30 dB with an operating power of 100 mW. A fibre-to-fibre total insertion loss of 6.1 dB is achieved when using singlemode fibres.
Performing Laparoscopic Adrenalectomy Safely (2004)

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