gebhart/patrepeval huggingface dataset:
A New Approach to Catalyze Template Polymerization of Aniline Using Electrostatically Multilayered Hematin Assemblies (2003)

Abstract In this work, we describe a new approach to catalyze the template polymerization of conducting polyaniline (Pani). Electrostatic layer‐by‐layer (ELBL) self‐assembly of a polyelectrolyte and a biomimetic catalyst, hematin has been utilized to construct a nanocomposite film catalyst. Poly(dimethyl diallylammonium chloride) (PDAC) and hematin have been used as polycation and counter anions, respectively. The absorption spectra by UV‐VIS‐NIR spectroscopy showed that a conductive form Pani was formed, not only as a coating on the surface of the ELBL composites, but was also formed in solution. Furthermore, it was found that the reaction rate was affected by pH and concentration of hematin in the multilayers. The feasibility of controlled desorption of hematin molecules from the LBL assembly was explored and demonstrated by changing pH and hematin concentration. It is believed that hematin sandwiched between positively charged polyelectrolytes in the composite films was slowly released into the solutions and then used to catalyze the template polymerization of aniline with SPS, resulting in a water soluble form of Pani. The polymerization rate of aniline in solution was enhanced with decreasing pH of the solutions due to increased desorption of hematin nanoparticles from the multilayers. These ELBL hematin assemblies demonstrated both a way to functionalize surfaces with conductive Pani and a potential method of reusability of the catalyst for improved cost effectiveness.
State Control of Servo Drives with Flexible Structural Components (2006)

This paper is concerned with the state control of servo axes for robots and machine tools. Special consideration is given to the additional damping of elastic structural components. Their effect on the feedback-controlled system is described by a simplified but suitable dynamic model that allows the state observation as well as online parameter identification for all relevant cases of structural flexibility. This leads to an extension of standard servo drives by a robust state space controller. The practical benefit of this method and its implementation on standard control hardware is illustrated for a newly developed machine tool axis
Search for single production of vector-like quarks decaying to a Z boson and a top or a bottom quark in proton-proton collisions at s = 13 $$ \sqrt{s}=13 $$ TeV (2017)

A search for single production of vector-like quarks, T and B, decaying into a Z boson and a top or a bottom quark, respectively, is presented. The search is performed using data collected by the CMS experiment at the LHC in proton-proton collisions at $ \sqrt{s}=13 $ TeV, corresponding to an integrated luminosity of 2.3fb$^{−1}$. An exotic T quark production mode through the decay of a heavy Z′ resonance is also considered. The search is performed in events with a Z boson decaying leptonically, accompanied by a bottom or a top quark decaying hadronically. No excess of events is observed over the standard model background expectation. Products of production cross section and branching fraction for T and B quarks from 1.26 and 0.13 pb are excluded at 95% confidence level for the range of resonance mass considered, which is between 0.7 and 1.7 TeV. Limits on the product of the Z′ boson production cross section and branching fraction, with the Z′ boson decaying to the Tt final state, are set between 0.31 and 0.13 pb, for Z′ boson masses in the range from 1.5 to 2.5 TeV. This is the first search at 13 TeV for single production of vector-like quarks in events with a Z boson decaying leptonically accompanied by boosted jets.
Electrospraying insulating liquids via charged nanodrop injection from the Taylor cone of an ionic liquid (2010)

Charge is injected into the bulk of an insulating liquid in the form of nanodrops produced by an immersed Taylor cone of an ionic liquid. The charge then drifts onto the insulator surface, destabilizing it and leading to the formation of an electrified jet that atomizes into approximately monodisperse micron size insulator drops. The approach is similar to those previously based on field injection of ions from sharp tungsten tips, but the continuous renewal and self-sharpening of the liquid charge-injector permits long-term stable operation. Using heptane as the insulator and 1-ethyl-3-methylimidazolium-BF4 as the ionic liquid we produce approximately monodisperse drops with average diameters ranging from less than 4 up to 20 μm, injecting in some cases as little as 0.0002% by volume of ionic liquid. No fundamental limitation restricting the possibility of forming even smaller drops is apparent. The scaling law of Kim and Turnbull [“Generation of charged drops of insulating liquids by electrostatic spraying,” J. Appl. Phys. 47, 1964 (1976)] where the drop diameter varies as the 2/3 power of the liquid flow rate and the −2/3 power of the spray current is confirmed, implying that the drops are on the average charged to 50%–60% of the Rayleigh limit.
Molecularly Engineered 6FDA‐Based Polyimide Membranes for Sour Natural Gas Separation (2020)

Glassy polyimide membranes are attractive for industrial applications in sour natural gas purification. Unfortunately, the lack of fundamental understanding of relationships between polyimide chemical structures and their gas transport properties in the presence of H<sub>2</sub> S constrains the design and engineering of advanced membranes for such challenging applications. Herein, 6FDA-based polyimide membranes with engineered structures were synthesized to tune their CO<sub>2</sub> /CH<sub>4</sub> and H<sub>2</sub> S/CH<sub>4</sub> separation performances and plasticization properties. Under ternary mixed sour gas feeds, controlling polymer chain packing and plasticization tendency of such polyimide membranes via tuning the chemical structures were found to offer better combined H<sub>2</sub> S and CO<sub>2</sub> removal efficiency compared to conventional polymers. Fundamental insights into structure-property relationships of 6FDA-based polyimide membranes observed in this study offer guidance for next generation membranes for sour natural gas separation.
100× Frequency Magnification Using a Time-Lens-Based Spectral Imaging System (2009)

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text Y. Okawachi, R. Salem, M. A. Foster, A. C. Turner-Foster, M. Lipson, and A. L. Gaeta, "100× Frequency Magnification Using a Time-Lens-Based Spectral Imaging System," in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, OSA Technical Digest (CD) (Optica Publishing Group, 2009), paper CWB4. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
PACMAN (2014)

Clock grid is a mainstream clock network methodology for high performance microprocessor and SOC designs. Clock skew, power usage and robustness to PVT (power, voltage, temperature) are all important metrics for a high quality clock grid design. Tree-driven-grid clock network is a typical clock grid clock network. It includes a clock source, a buffered tree, leaf buffers, a mesh clock grid, local clock buffers, and latches as shown in Fig. 1. For such network, one big challenge is how to connect the leaf level buffers of the global tree to the grid with nonuniform loads under tight slew and skew constraints. The choice of tapping points that connect the leaf buffers to the clock grid are critical to the quality of the clock designs. Good tapping points can minimize the clock skew and reduce power. In this paper, we proposed a new algorithm to select the tapping points to build the global tree as regular and symmetric as possible. From our experimental results, the proposed algorithm can efficiently reduce global clock skew, rising slew, maximum overshoot, reduce power, and avoid local skew violation.
Heating and acid doping thin film carbon nanotube assemblies for high transparency and low sheet resistance (2010)

Transparent electrodes made from metal oxides suffer from poor flexibility and durability. Highly transparent and electrically conductive thin films were assembled as a potential indium tin oxide (ITO) replacement using layer-by-layer (LbL) assembly of single-walled carbon nanotubes (SWNTs), stabilized with negatively charged deoxycholate (DOC), and positively charged poly(diallyldimethylammonium chloride) [PDDA]. Ellipsometry, quartz crystal microbalance, and UV-vis were used to measure the linear growth of these films as a function of the number of bilayers deposited, while TEM and SEM were used to visualize the morphology of these films. The PDDA/(SWNT + DOC) system produced transparent (>82% visible light transmittance) and electrically conductive (∼160 S cm−1) 20-bilayer films with a 38.4 nm thickness. Moreover, a series of post-treatments, involving heating and nitric acid doping, were used to increase conductivity to 1430 S cm−1 (Rs ≈ 300 Ω sq−1), with no change in transparency, owing to the removal of PDDA and the charge transfer doping. This study demonstrates high visible light transmittance and electrical conductivity of SWNT-based thin films, which are potentially useful as flexible transparent electrodes for a variety of optoelectronic applications.
Detection of human antibodies using “convergent” combinatorial peptide libraries or “mixotopes” designed from a nonvariable antigen: Application to the EBV viral capsid antigen p18 (1998)

We have previously described the use of synthetic combinatorial "convergent" libraries, or "mixotopes" as immunogens or as antigens to represent naturally hypervariable sequences. The success of this approach suggests that such a mixture of closely related peptides could, at least in part, conveniently represent a nonvariable epitope during its multiple interactions with an antibody population. To address this possibility, we have designed from a non-variable immunodominant peptide of the EBV-viral capsid antigen of 18 kD (VCAp18) a series of three mixotopes containing from 65,000 to 16 million combinatorial sequences. The reactivity of VCAp18 and its three derived mixotopes was examined in ELISA towards a collection of 74 human sera from documented EBV-negative or EBV-positive donors, and analyzed in terms of sensitivity and specificity. Following the observation that the two least degenerated mixotopes could improve the sensitivity of detection of some sera of low reactivity for VCAp18, we decided to combine each mixotope with the VCAp18 peptide. In the case of the least degenerated mixotope in combination with VCAp18, sensitivity and specificity for immunoenzymatic EBV-serodiagnosis, were enhanced to 100%. Our results suggest that synthetic "convergent" combinatorial peptide libraries or "mixotopes," designed from nonvariable antigens, could be useful adjuncts to an antigenic single-sequence peptide in immunoenzymatic serodiagnosis.
Broadband III-V on silicon hybrid superluminescent LEDs by quantum well intermixing and multiple die bonding (2014)

Combining quantum well intermixing and multiple die bonding a broadband superluminescent III-V on silicon LED was realized. Balancing four LEDs with different band gaps resulted in 292nm 3dB bandwidth and an on-chip power of -8dBm.
2017 HRS/EHRA/ECAS/APHRS/SOLAECE expert consensus statement on catheter and surgical ablation of atrial fibrillation: Executive summary (2017)

Peer Reviewed
Direct Synthesis of Aqueous CdSe/ZnS-Based Quantum Dots Using Microwave Irradiation (2009)

This study focuses on an aqueous one-pot method for synthesis of CdSe/ZnS core/shell QDs using microwave radiation. The novelty of the study is the use of Zn(NH3)42+ as the zinc source. Using an initial solution with the composition Cd1Se1Zn6MPA20, the QDs obtained upon heating at 160 °C for 60 min were not high quality, as evidenced by a quantum yield of 1.5%, due to the poor interface between the core and shell. Postsynthesis UV irradiation of the as-prepared QDs for 30 min could be used to improve the quantum yield to 22%, but the technique is not practical for large-scale applications. By increasing the amount of Cd2+ in the initial solution to Cd4Se1Zn4MPA20, we formed CdSe/CdS/ZnS QDs after heating at 150 °C for 90 min, which contained less interfacial trap-states and as a result, had a higher quantum yield of 13%. These QDs were characterized by powder diffraction, electron microscopy, and X-ray photoelectron spectroscopy. Uptake of the microwave-optimized QDs by alveolar macrophages was compared in a side-by-side study against commercial QDs, QDot585. Despite having a lower relative quantum yield (13%) as compared to the commercial QDs (65%), the microwave-synthesized QDs at 20 nM concentrations were readily detected within the macrophages after 20 min of incubation.
Accelerating the Final Exponentiation in the Computation of the Tate Pairings. (2012)

Abstract. Tate pairing computation consists of two parts: Miller step and final exponentiation step. In this paper, we investigate how to accelerate the final exponentiation step. Consider an order r subgroup of an elliptic curve defined over Fq with embedding degree k. The final exponentiation in the Tate pairing is an exponentiation of an element in Fqk by (q k − 1)/r. The hardest part of this computation is to raise to the power λ: = ϕk(q)/r. Write it as λ = λ0 + λ1q + · · · + λd−1q d−1 in the q-ary representation. When using multi-exponentiation techniques with precomputation, the final exponentiation cost mostly depends on κ(λ), the size of the maximum
Search for RareB(s)0→μ+μ−μ+μ−Decays (2013)

A search for the decays B(0)((s))→μ(+)μ(-)μ(+)μ(-) and B(0)→μ(+)μ(-)μ(+)μ(-) is performed using data, corresponding to an integrated luminosity of 1.0 fb(-1), collected with the LHCb detector in 2011. The number of candidates observed is consistent with the expected background and, assuming phase-space models of the decays, limits on the branching fractions are set: B(B(s)(0)→μ(+)μ(-)μ(+)μ(-))<1.6(1.2)×10(-8) and B(B(0)→μ(+)μ(-)μ(+)μ(-))<6.6(5.3)×10(-9) at 95% (90%) confidence level. In addition, limits are set in the context of a supersymmetric model which allows for the B((s))(0) meson to decay into a scalar (S) and pseudoscalar particle (P), where S and P have masses of 2.5 GeV/c and 214.3 MeV/c, respectively, both resonances decay into μ(+)μ(-). The branching fraction limits for these decays are B(B(s)(0)→SP)<1.6(1.2)×10(-8) and B(B(0)→SP)<6.3(5.1)×10(-9) at 95% (90%) confidence level.
Hepcidin and Ferroportin in Different Murine Models of Obesity Challenged with Polymicrobial Sepsis (2013)

Sepsis is a leading cause of mortality in non‐coronary intensive care units. Obesity has been on the rise over the past decades. Hepcidin diminishes ferroportin expression and decreases ferritin levels. In both obesity and sepsis hepcidin is increased causing lower serum iron levels. The changes of hepcidin expression in murine obesity and sepsis are unknown. The objective of this study was to compare hepcidin, ferroportin and ferritin levels in murine models of obesity (ob/ob and db/db) challenged with cecal ligation and puncture (CLP) to values in corresponding shams. RT‐PCR and ELISAs were used to quantify the expression of hepcidin and ferroportin in hepatic and subcutaneous fat tissue, and serum levels of hepcidin and ferritin in WT, ob/ob and db/db mice 6 hours following CLP. CLP led to increased hepatic expression of hepcidin in WT and ob/ob, but not db/db, mice. Hepcidin expression in subcutaneous fat was elevated solely in db/db sham mice. Ferroportin expression was unchanged in septic obese mice. Serum levels of hepcidin were significantly decreased in ob/ob and db/db CLP mice and their corresponding shams compared with WT sham and CLP mice. Ferritin levels were unchanged in all groups. The elevated tissue expression of hepcidin following CLP does not appear to exert a systemic impact, as indicated by the unchanged serum levels of hepcidin and ferritin (supported by the FWF Austrian Science Fund, P22567, Government of Styria).
A Quad-Redundant PLC Architecture for Cyber-Resilient Industrial Control Systems (2020)

Due to their importance in modern critical infrastructure, industrial environments, and military platforms, programmable logic controllers (PLCs) must be protected from cyberattacks. This letter presents a quad-redundant architecture for PLCs to achieve cyber-resilience against hacking. Typical redundancy schemes for PLCs provide robustness against physical damage and random faults, but exhibit severe vulnerabilities to software hijacking and other cyberattacks. The proposed quad-redundant architecture combines software diversification and hardware redundancy to harden PLCs and provide high-assurance protection against software hijacking, and improves cyber-resilience by securely regenerating PLC instances that succumb to cyberattacks. A chilled-water system and memory corruption attack scenario are simulated with control hardware-in-the-loop to evaluate the cyber-resilience achieved by the proposed architecture and demonstrate successful recovery from cyberattacks. Results show that the proposed architecture can successfully detect, thwart, and recover from software hijacking cyberattacks that would otherwise be extremely difficult to detect.
Revision of failed patellar components. (2004)

In the majority of revision knee replacements, the existing patellar component is well fixed and it is possible to retain the existing patellar component when specific criteria are met. If the patellar component is loose, malpositioned, or damaged, it should be revised. The decision regarding whether to implant another prosthesis or to perform an alternative procedure is dependent on an assessment of remaining patellar bone stock. Patellae with severe bone deficiency, which preclude adequate fixation of another patellar implant, occur in approximately 10% of revision knee replacements. Specific techniques include patellar resection arthroplasty, the gull-wing osteotomy, structural bone grafting of the patella, morcellized bone grafting of the patella, or use of a porous metal augmentation baseplate. Whether the patellar revision being performed is an isolated procedure or is part of revision arthroplasty, optimal positioning of the femoral and tibial component is important for proper patellar kinematics.
EDKAS: A Efficient Dist: ributed Key Agreement Scheme Usinng One Way Function Trees for Dynamic Collaborative Groups (2006)

The increasing popularity of distributed and collaborative applications prompts the need for secure communication in collaborative groups. Some distributed collaborative key management protocols have been proposed to provide group communication privacy and data confidentiality for collaborative groups. However, most of them rekey on each member change, and the costs of group rekeying can be quite substantial for large groups with frequent membership changes. In this paper, we propose a efficient distributed key agreement scheme using a distributed one-way function tree named EDKAS which can significantly reduce the computation and communication costs of maintaining the group key especially in a highly dynamical environment based upon period-based group rekeying. Performance of the period-based group rekeying algorithm is analyzed and evaluated under different settings. A comparison with previous work has shown that EDKAS provides high rekeying efficiency while preserving both distributed and collaborative properties
Fixed Dose of Cemiplimab in Patients with Advanced Malignancies Based on Population Pharmacokinetic Analysis (2021)

Cemiplimab 350 mg Q3W is being further investigated in multiple indications.
Power allocation and cooperative jamming for enhancing physical layer security in opportunistic relay networks in the presence of interference (2017)

Abstract In this paper, the impact of cochannel interference on the secrecy performance of dual‐hop decode‐and‐forward relaying is investigated. In particular, the outage and intercept probabilities are obtained for the opportunistic relay selection (ORS) model in the presence of nonidentical interfering signals under a single/multiple passive eavesdropper(s) attack. Moreover, the proposed work enhances physical layer security performance of ORS model using cooperative jamming (CJ) techniques. Therefore, new closed‐form expressions are derived for the intercept and outage probabilities of the CJ‐ORS model in the presence of interference over Rayleigh fading channels. Moreover, the analyses are generalized to the case of multiple eavesdroppers where closed‐form expressions are derived for the intercept probability. To reveal more insights on the proposed work secrecy performance, asymptotic closed‐form expressions for the intercept and outage probabilities are obtained. Using these asymptotic expressions, a power allocation optimization problem is formulated and solved for enhancing the system security. The derived analytical formulas herein are supported by numerical and simulation results to clarify the main contributions of the paper. The results show that, although the cochannel interference increases the system outage probability, it might improve the system secrecy performance. Moreover, the proposed CJ‐ORS model is shown to enhance the system secrecy performance compared to ORS model.
An immunocompetent rectal cancer model to study radiation therapy (2022)

We describe a mouse model of rectal cancer (RC) involving rapid tumor organoid engraftment via orthotopic transplantation in an immunocompetent setting. This approach uses simple mechanical disruption to allow engraftment, avoiding the use of dextran sulfate sodium. The resulting RC tumors invaded from the mucosal surface and metastasized to distant organs. Histologically, the tumors closely resemble human RC and mirror remodeling of the tumor microenvironment in response to radiation. This murine RC model thus recapitulates key aspects of human RC pathogenesis and presents an accessible approach for more physiologically accurate, preclinical efficacy studies.
Combining mobility and heterogeneous networking for emergency management (2009)

Emergency Management is an important topic for research community worldwide, especially after recent major disasters. The problem of supporting mobility at the disaster site to rescue teams equipped with different heterogeneous access technologies and providing interoperability between different agencies and jurisdictions is still under investigation. In this work we propose to merge the advantages of IPv6 micro-mobility management of Proxy Mobile IPv6 (PMIPv6) with macro-mobility management, security, inter-technology handover and multi-homing features of Host Identity Protocol (HIP). This new approach applied to our proposed ad-hoc satellite and wireless mesh system architecture for emergency mobile communications can improve mobility, security, reliability and interoperability in Emergency Management domain.