gebhart/patrepeval huggingface dataset:
Efficient Scavenging of Solar and Wind Energies in a Smart City (2016)

To realize the sustainable energy supply in a smart city, it is essential to maximize energy scavenging from the city environments for achieving the self-powered functions of some intelligent devices and sensors. Although the solar energy can be well harvested by using existing technologies, the large amounts of wasted wind energy in the city cannot be effectively utilized since conventional wind turbine generators can only be installed in remote areas due to their large volumes and safety issues. Here, we rationally design a hybridized nanogenerator, including a solar cell (SC) and a triboelectric nanogenerator (TENG), that can individually/simultaneously scavenge solar and wind energies, which can be extensively installed on the roofs of the city buildings. Under the same device area of about 120 mm × 22 mm, the SC can deliver a largest output power of about 8 mW, while the output power of the TENG can be up to 26 mW. Impedance matching between the SC and TENG has been achieved by using a transformer to decrease the impedance of the TENG. The hybridized nanogenerator has a larger output current and a better charging performance than that of the individual SC or TENG. This research presents a feasible approach to maximize solar and wind energies scavenging from the city environments with the aim to realize some self-powered functions in smart city.
A Tactile Sensor-Based Architecture for Collaborative Assembly Tasks with Heavy-Duty Robots (2021)

In this article we present a sensing device to enable safe and reactive human-robot interaction for collaborative tasks involving industrial heavy-duty robots. We have designed and implemented an handle covered with artificial skin intended to provide commands in response to operator&#x0027;s touch. The tactile processing system is capable to recognize human voluntary interactions from tactile images by exploiting a pre-trained convolutional neural network. We show the accuracy results of a fine-tuning training of the network done using new data acquired from the handle. We also provide a performance analysis of the model inference on a Nvidia Jetson Nano board, confronting the inference time from two different optimization models, fp16 and fp32 and showing that fp16 better performs in terms of temporal predictability.
The analysis of human head interaction with a hand-held mobile using the non-uniform FDTD (2002)

Recent years have seen an explosive growth in the area of wireless communication and, around the world, several hundred millions of subscribers are expected to have mobile phones by the year 2000. With the proliferation of these phones, questions have arisen about the interaction of the electromagnetic field with biological tissues in general, and about the power absorbed by the human head in particular. In this paper we employ efficient numerical techniques to compute the local absorbed power in the head and to predict the modification of the antenna performance due to its close coupling with the head.
Transverse Vibration of a Rectangularly Orthotropic Spinning Disk, Part 1: Formulation and Free Vibration (1999)

The transverse vibration of a spinning circular disk with rectangular orthotropy is investigated. Two dimensionless parameters are established in order to characterize the degree of disk anisotropy and solutions are sought for a range of these parameters. The orthotropic bending stiffness is transferred into polar coordinates and is found to differ from a classical formulation for a stationary disk. A Fourier series expansion is used in the circumferential direction. Unlike the isotropic disk, the Fourier components determining the transverse vibration modes of the orthotropic disk do not separate. This condition results in an eigenvalue problem involving a coupled set of ordinary differential equations which are solved by a combination of numerical integration and iteration. Thus the natural frequencies and normal modes of vibration are determined. Because each eigenfunction contains contributions from more than one Fourier component, the normal modes do not possess distinct nodal diameters or nodal circles. Furthermore, disk orthotropy causes the natural frequencies corresponding to the sine and cosine modes to split; the degree of splitting decreases as the rotational speed increases.
Experimental Study on Broadband Nonlinear Phase Wandering in Coherent Detection Long-Haul Transmissions (2010)

We investigate fast phase wandering observed in coherent detection long-haul transmission experiments. We demonstrate the phase wandering is a broadband nonlinear effect. We compare its impact on different coherent modulation and detection schemes.
Chemical Form and Distribution of Selenium and Sulfur in the Selenium Hyperaccumulator <i>Astragalus bisulcatus</i>  (2003)

In its natural habitat, Astragalus bisulcatus can accumulate up to 0.65% (w/w) selenium (Se) in its shoot dry weight. X-ray absorption spectroscopy has been used to examine the selenium biochemistry of A. bisulcatus. High concentrations of the nonprotein amino acid Se-methylseleno-cysteine (Cys) are present in young leaves of A. bisulcatus, but in more mature leaves, the Se-methylseleno-Cys concentration is lower, and selenate predominates. Seleno-Cys methyltransferase is the enzyme responsible for the biosynthesis of Se-methylseleno-Cys from seleno-Cys and S-methyl-methionine. Seleno-Cys methyltransferase is found to be expressed in A. bisulcatus leaves of all ages, and thus the biosynthesis of Se-methylseleno-Cys in older leaves is limited earlier in the metabolic pathway, probably by an inability to chemically reduce selenate. A comparative study of sulfur (S) and Se in A. bisulcatus using x-ray absorption spectroscopy indicates similar trends for oxidized and reduced Se and S species, but also indicates that the proportions of these differ significantly. These results also indicate that sulfate and selenate reduction are developmentally correlated, and they suggest important differences between S and Se biochemistries.
A yeast-based screening assay identifies repurposed drugs that suppress mitochondrial fusion and mtDNA maintenance defects (2019)

Mitochondria continually move, fuse and divide, and these dynamics are essential for the proper function of the organelles. Indeed, the dynamic balance of fusion and fission of mitochondria determines their morphology and allows their immediate adaptation to energetic needs as well as preserving their integrity. As a consequence, mitochondrial fusion and fission dynamics and the proteins that control these processes, which are conserved from yeast to human, are essential, and their disturbances are associated with severe human disorders, including neurodegenerative diseases. For example, mutations in <i>OPA1</i>, which encodes a conserved factor essential for mitochondrial fusion, lead to optic atrophy 1, a neurodegeneration that affects the optic nerve, eventually leading to blindness. Here, by screening a collection of ∼1600 repurposed drugs on a fission yeast model, we identified five compounds able to efficiently prevent the lethality associated with the loss of Msp1p, the fission yeast ortholog of OPA1. One compound, hexestrol, was able to rescue both the mitochondrial fragmentation and mitochondrial DNA (mtDNA) depletion induced by the loss of Msp1p, whereas the second, clomifene, only suppressed the mtDNA defect. Yeast has already been successfully used to identify candidate drugs to treat inherited mitochondrial diseases; this work may therefore provide useful leads for the treatment of optic atrophies such as optic atrophy 1 or Leber hereditary optic neuropathy.
Critical evaluation of CuSO4-H2O system up to solubility limit, from eutectic point to 373.15 K (2022)

The solubility of copper(II) sulfate in water as a function of temperature and ionic strength is successfully modelled using Pitzer formalism. Four types of experimental data from the literature were implemented for the assessment, namely activity and osmotic coefficients, freezing point depression and solubility of CuSO4 in water. This work proved that four Pitzer parameters with eight terms are sufficient to create a consistent thermodynamic model of the CuSO4-H2O system up to 5 mol/kg-H2O of CuSO4, from the eutectic point to 373.15 K. The whole optimization study included a critical deviation analysis to sort out less reliable experimental data. To verify the results of this work, comparisons were carried out with experimental data which were not included in the assessment, i.e. the vapour pressure of the saturated solution, thermodynamic values of the cell reaction as well as electrochemical cell potential (EMF).
User-centered security (1996)

We introduce the term user-centered security to refer to security models, mechanisms, systems, and software that have usability as a primary motivation or goal. We discuss the history of usable secure systems, citing both past problems and present studies. We develop three categories for work in user-friendly security: applying usability testing and techniques to secure systems, developing security models and mechanisms for user-friendly systems, and considering user needs as a primary design goal at the start of secure system development. We discuss our work on user-centered authorization, which started with a rules-based authorization engine (MAP) and will continue with Adage. We outline the lessons we have learned to date and how they apply to our future work.
Differential susceptibility of Onchocerca volvulus microfilaria to ivermectin in two areas of contrasting history of mass drug administration in Cameroon: Relevance of microscopy and molecular techniques for the monitoring of skin microfilarial repopulation within six months of direct observed treatment (2020)

Abstract Background. Ivermectin is an excellent microfilaricide against Onchocerca volvulus. However, in some regions, long term use of ivermectin has resulted in sub-optimal responses to the treatment. More data to properly document the phenomenon in various contexts of ivermectin mass drug administration (IVM-MDA) is needed. Also, there is a need to accurately monitor a possible repopulation of skin by microfilariae following treatment. Skin snip microscopy is known to have a low sensitivity in individuals with light infections, which can be the case following treatment. This study was designed with two complementary objectives: (i) to assess the susceptibility of O. volvulus microfilariae to ivermectin in two areas undergoing IVM-MDA for different lengths of time, and (ii) to document the repopulation of skin by the O. volvulus microfilariae following treatment, using 3 independent diagnostic techniques. Method. Identified microfilaridermic individuals were treated with ivermectin and re-examined after 1, 3, and 6 months using microscopy, actin real-time PCR (actinqPCR) and O-150 LAMP assays. Susceptibility to ivermectin and trends in detecting reappearance of skin microfilariae were determined using three techniques. Microscopy was used as an imperfect gold standard to determine the performance of actin-qPCR and LAMP. Results. In Bafia with over 20 years of IVM-MDA, 11/51 (21.6%) direct observe treated microfilaridemic participants were still positive for skin microfilariae after 1 month. In Melong, with 10 years of IVM-MDA, 2/29 (6.9%) treated participants were still positive. The microfilarial density reduction per skin biopsy within one month following treatment was significantly lower in participants from Bafia. In both study sites, the molecular techniques detected higher proportions of infected individuals than microscopy at all monitoring time points. LAMP demonstrated the highest levels of sensitivity and real-time PCR was found to have the highest specificity. Conclusion. Patterns in skin mirofilariae clearance and repopulation were established. O. volvulus worms from Bafia with higher number of annual MDA displayed a lower clearance and higher repopulation rate after treatment with ivermectin. Molecular assays displayed higher sensitivity in monitoring O. volvulus microfilaridemia within six months following treatment.
Dissociation Between Peripheral Blood Chimerism and Tolerance to Hindlimb Composite Tissue Transplants: Preferential Localization of Chimerism in Donor Bone (2009)

Mixed chimerism established by nonmyeloablative conditioning induces long-term acceptance of CTA, which is associated with persistent chimerism preferentially in the transplanted donor bone.
Mimicking the electron transfer chain in photosystem II with a molecular triad thermodynamically capable of water oxidation (2012)

In the photosynthetic photosystem II, electrons are transferred from the manganese-containing oxygen evolving complex (OEC) to the oxidized primary electron-donor chlorophyll P680(•+) by a proton-coupled electron transfer process involving a tyrosine-histidine pair. Proton transfer from the tyrosine phenolic group to a histidine nitrogen positions the redox potential of the tyrosine between those of P680(•+) and the OEC. We report the synthesis and time-resolved spectroscopic study of a molecular triad that models this electron transfer. The triad consists of a high-potential porphyrin bearing two pentafluorophenyl groups (PF(10)), a tetracyanoporphyrin electron acceptor (TCNP), and a benzimidazole-phenol secondary electron-donor (Bi-PhOH). Excitation of PF(10) in benzonitrile is followed by singlet energy transfer to TCNP (τ = 41 ps), whose excited state decays by photoinduced electron transfer (τ = 830 ps) to yield Bi-PhOH-PF(10)(•+)-TCNP(•-). A second electron transfer reaction follows (τ < 12 ps), giving a final state postulated as BiH(+)-PhO(•)-PF(10)-TCNP(•-), in which the phenolic proton now resides on benzimidazole. This final state decays with a time constant of 3.8 μs. The triad thus functionally mimics the electron transfers involving the tyrosine-histidine pair in PSII. The final charge-separated state is thermodynamically capable of water oxidation, and its long lifetime suggests the possibility of coupling systems such as this system to water oxidation catalysts for use in artificial photosynthetic fuel production.
System capacity with transmit diversity techniques in GERAN (2002)

Transmit diversity techniques use multiple transmit antennas to enhance the spectral efficiency and/or data rate. Examples of two different transmit diversity techniques are delay diversity (DD) and space time coding (STC). This paper describes link and system level capacity gains achieved by these two types of transmit diversity techniques for two types of services. Focus is put on voice over the GSM/EDGE radio access network (GERAN) with different codec solutions, e.g., half-rate (HR) and quarter-rate (QR) AMR speech, but best-effort packet data is also addressed. The simulation results for voice show that the relative gain from STC is higher for QR than for HR. For best-effort packet data, only a small capacity gain can be achieved with STC while the user throughput at a given load can be increased significantly.
Riboflavin as a Bioorganic Solar Fuel: Photoredox Chemistry Rationalized and Accelerated in a Miniaturized Flow Photoreactor (2019)

Abstract With the depletion of fossil‐fuel‐based energies and the corresponding growing environmental concerns, the design of new strategies to store renewable solar energy is highly attractive. Herein, we studied a biomimetic organic solar fuel (Riboflavin – Vitamin B2) to photochemically store solar light into its amphoteric form (leucodeuteroflavin), working as a charge carrier towards a flow fuel cell. We demonstrate that miniaturization of the photoreactor permits significant reduction of the full time solar charge. Nevertheless, due to inherent leucodeuteroflavin (LDH 2 ) degradation into lumichrome (LC), the maximum system charge (at pH=5) is limited to 13 % corresponding to a maximum power density of 0.11 mW cm −2 after 90 min. In comparison with other described photoredox electroactive systems (e. g. polyoxometalates, quinones), organic solar fuels based on flavins appear particularly promising and their chemical structure should be optimized to fit both photostability and economical requirements. In any case, this study enables a clear rationalization and quantification of the mechanism of riboflavin degradation under anaerobic conditions, which has been the topic of many discussions during the last century, and opens the way towards the development of a new generation of low‐cost renewable organic solar fuels.
Feasibility of intra-acquisition motion correction for 4D DSA reconstruction for applications in the thorax and abdomen (2018)

The recently proposed 4D DSA technique enables reconstruction of time resolved 3D volumes from two C-arm CT acquisitions. This provides information on the blood flow in neurovascular applications and can be used for the diagnosis and treatment of vascular diseases. For applications in the thorax and abdomen, respiratory motion can prevent successful 4D DSA reconstruction and cause severe artifacts. The purpose of this work is to propose a novel technique for motion compensated 4D DSA reconstruction to enable applications in the thorax and abdomen. The approach uses deformable 2D registration to align the projection images of a non-contrast and a contrast enhanced scan. A subset of projection images is then selected, which are acquired in a similar respiratory state and an iterative simultaneous multiplicative algebraic reconstruction is applied to determine a 3D constraint volume. A 2D-3D registration step then aligns the remaining projection images with the 3D constraint volume. Finally, a constrained back-projection is performed to create a 3D volume for each projection image. A pig study has been performed, where 4D DSA acquisitions were performed with and without respiratory motion to evaluate the feasibility of the approach. The dice similarity coefficient between the reference 3D constraint volume and the motion compensated reconstruction was 51.12 % compared to 35.99 % without motion compensation. This technique could improve the workflow for procedures in interventional radiology, e.g. liver embolizations, where changes in blood flow have to be monitored carefully.
From Glycosaminoglycans to Heparinoid Mimetics with Antiproliferative Activity (1997)

Introduction Sulfated Carbohydrates Spaced Sugars A New Approach to Oligosaccharide Mimetics References
Computational complexity of nonlinear transforms applied to optical communications systems with normal dispersion fibers (2015)

We show that nonlinear transforms based on the Zakharov-Shabat scattering problem are not practical to encode/decode QPSK signals in communication systems with normal dispersion fibers operating with average powers above that of the quasi-linear regime.
Decision letter: Molecular mechanism of Afadin substrate recruitment to the receptor phosphatase PTPRK via its pseudophosphatase domain (2022)

Substrate recognition by a receptor protein tyrosine phosphatase is mediated by binding to its pseudophosphatase domain via a short helix that is &gt;100 amino acids distant from the target phosphosite, uncovering principles of phosphatase substrate recognition and potential scaffolding functions.
Multi-Chamber Arresters of a New Type for Protection Overhead Lines 6.6kV, 10kV and 13.8kV Against Induced Overvoltages (2022)

Development results of arresters for 6.6 kV,10 kV and 13.8 kV overhead power lines against induced overvoltages are presented. The arresters quench impulse current arc without power follow current and have many advantages at conventional arresters.
HfSiON n-MOSFETs Using Low-Work Function$hboxHfSi_x$Gate (2006)

The authors have developed a novel high-temperature stable <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$hboxHfSi_x$</tex> gate for high- <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$kappa$</tex> HfSiON gate dielectric. After a 1000 <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$^circhboxC$</tex> RTA, the <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$hboxHfSi_x/hboxHfSiON$</tex> devices showed an effective work function of 4.27 eV and a peak electron mobility of 216 <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$hboxcm^2/hboxVcdothboxs$</tex> at 1.6-nm equivalent oxide thickness, with additional merit of a process compatible with current very large scale integration fabrication lines.
ProteinChip Array Profiling for Identification of Disease- and Chemotherapy-Associated Biomarkers of Nasopharyngeal Carcinoma (2007)

Treatment-associated serum biomarkers found might serve to triage NPC patients for appropriate CT treatment.
Calculating Minimum Buffer Requirement of Constant Rate Transmission Scheme Based on SVM (2009)

Constant rate transmission and transport (CRTT) is an effective bandwidth smoothing scheme resulting in one fixed rate during the whole duration of variable bit-rate video, which, however, needs a large client buffer size. The minimum buffer requirement (MBR) of CRTT, besides benefiting the design of some piecewise transmission scheme, can examine whether we can transmit the requested video with a constant rate for a given buffer size. In this paper, we formulate off-line bandwidth smoothing into a binary classification problem of the underflow and overflow points. Then we propose a novel algorithm based on support vector machine because of its equal margin, which,we have proven, is able to minimize the required buffer size of CRTT. Our algorithm, therefore, can exactly calculate MBR together with the CRTT transmission rate without exhaustively searching buffer sizes and startup delay. The simulation results using some real MPEG4 and H.264 video show the philosophy and effectiveness of our algorithm.
Acoustic Measurements of Lithium-Ion Battery Electrode Films (2017)

This research investigates the use of acoustic measurements as an alternative means of non-destructive quality control for Li-ion battery films. The goal of this research is to enable accurate, non-destructive inspection of the battery electrode as it is being manufactured, so that problems can be identified and addressed early on. Here we report on our efforts to distinguish between films with different mechanical properties using acoustic resonances and surface acoustic wave (SAW) velocity. We were able to differentiate between films of various coating thicknesses using resonance measurements. We also used resonance measurements to monitor a material as it dried. SAW velocity measurements need further work for successful implementation.
Effects on C3 and CH50 Levels During and Following Extracorporeal Whole Body Hyperthermia (1999)

Cardiopulmonary bypass can affect inflammatory reactions and evoke the “postperfusion syndrome,” manifested as multiple organ dysfunction in the recovery period. This syndrome is generated by the activation of complement, macrophages, neutrophils, and inflammatory cytokines. Following the use of hypothermia during cardiac procedures, active hyperthermic rewarming is used to reestablish body temperature. Complement levels and their interactions have been investigated during and following hypothermia. Hyperthermia is being used clinically; however, the effect of markedly elevated temperatures on complement is unknown and, therefore, needs to be investigated. A pilot canine study was designed to begin to explore what role hyperthermia may play on complement levels during and following extracorporeal whole body hyperthermia. Five dogs were heated to a core temperature of approximately 42°C, held at this elevated temperature for 90 minutes, then cooled to normothermia. A decline in C3 levels at the end of warming with further declines through day 4 post treatment was observed. CH50 levels mimicked the C3 level decline; however, there was a trend for rebounding by day 4. The findings involving complement factors following hyperthermia signify that this increase in temperature causes a decrease in both C3 and CH50 levels.