gebhart/patrepeval huggingface dataset:
Vision-based Model Predictive Control for Unmanned Aerial Vehicles Automatic Trajectory Generation and Tracking (2019)

This paper proposes a single-feature vision-based control system for unmanned aerial vehicles with hovering capability. The purpose of the control system is to perform a desired maneuver while keeping a specified visual feature in a certain position of the image plane. &#13;\nSince the feature tracking problem constitutes a non-linear static constraint on the system dynamics, a theoretical analysis of the equilibrium points of the system is presented, and a methodology for exploiting this result for trajectory generation is proposed. Knowledge of the loci of equilibrium points of the system, which depends on which variables are selected as dependent and independent, allows to generate a large variety of vehicle trajectories without actually using the vehicle position as variable to be regulated. &#13;\nModel Predictive Control is used to have the vehicle actually perform the desired maneuver while enforcing excursion constraints on relevant state and control variables.&#13;\nExamples are proposed for hovering relatively to a target (the visual feature), orbiting at constant altitude or spiraling around a target, and landing on a target with a desired flight path angle; all these trajectories are obtained by manipulating a minimal set of state and output variables, and without employing any guidance, trajectory tracking or path following algorithm.
Compressive Response and Failure of Circular Cell Polycarbonate Honeycombs Under Inplane Uniaxial Stresses (1999)

The crushing response of polycarbonate circular cell honeycomb to inplane uniaxial loading under displacement control is analyzed through a combination of experiment and numerical simulation. The experiments, which correspond to two different uniaxial loading conditions, are performed using honeycomb material which has a nearly periodic microstructure. In the initial part of the response, the specimens deform in a uniform fashion. Next, a nonlinear phase characterized by progressive localization of deformation is observed. The progressive localization causes the walls of each cell to contact. These experimental results are simulated through numerical analysis using the finite element method. The reasons for the orthotropic response of the honeycombs are discussed.
Oxygen atom density in a large reactor powered by four inductively coupled plasma sources (2022)

Gradients in O-atom density in metallic plasma reactor useful for rapid surface activation of 3D polymer products have been measured. The reactor of a volume of 150 l was equipped with four inductively coupled plasma sources (ICPS) of (predominantly) oxygen atoms, parallelly coupled with a radio-frequency generator of adjustable power up to 5 kW at 13.56 MHz. Molecular oxygen was continuously introduced into the ICP sources, where it was dissociated upon plasma conditions. The constant pumping of the plasma reactor enabled the effective transfer of O-atoms from the ICP sources, so that their density remained high in the entire chamber even far from plasma sources. The O-atom density was measured across the reactor with a movable catalytic probe calibrated for oxygen. The sophisticated immersible design enabled the O-atom density to exceed 1021 m−3 in the major chamber volume at the pressure of 20 Pa. At this pressure, a uniform plasma in the H-mode was sustained at the total real RF power of 1800 W. Significant gradients in the O-atom density were only detected next to ICP sources' exhausts and in the main chamber's metallic side tubes. Such uniform distribution of O-atoms in a large reactor is advantageous for rapid surface activation of 3D polymer products.
4‐disubstituted furans, 5. Regiospecific mono‐ipso‐iodination of 3,4‐bis(trimethylsilyl)furan and regiospecific ipso‐iodination of tris[(4‐alkyl‐ or ‐aryl)furan‐3‐yl]boroxines to 4‐substituted 3‐(trimethylsilyl)furans and unsymmetrical, 3,4‐disubstituted furans (1994)

Abstract 4‐Iodo‐3‐trimethylsilylfuran ( 2 ), obtained through the regio‐Specific iodination of 3,4‐bis(trimethylsilyl)furan ( 1 ), underwent either palladium‐ or nickel‐catalyzed cross‐coupling reactions with terminal alkenes, terminal alkynes, areneboronic acids, bis( p ‐methoxycarbonylbenzyl)zinc and Grignard reagents to give 4‐substituted 3‐(trimethylsilyl)furans 3–7 , which were converted into boroxines 8 . Regiospecific iodination of 8 gave iodofurans 9 , which afforded in the usual way unsymmetrical 3,4‐disubstituted furans 10 . Boroxines 8 gave also 3,4‐disubstituted furans 11 via palladium‐catalyzed cross‐coupling reactions with piperonyl chloride and vinyl bromide. magnified image
Investigation of Combined Supports for Cu-Based Oxygen Carriers for Chemical-Looping with Oxygen Uncoupling (CLOU) (2013)

The chemical-looping with oxygen uncoupling (CLOU) process is a novel solution for efficient combustion with inherent separation of carbon dioxide. The process uses a metal oxide as an oxygen carrier to transfer oxygen from an air to a fuel reactor. In the fuel reactor, the metal oxide releases gas phase oxygen, which oxidizes the fuel through normal combustion. In this study, Cu-based oxygen carrier materials that combine different supports of MgAl2O4, TiO2, and SiO2 are prepared and characterized with the objective of obtaining highly reactive and attrition resistant particles. The oxygen carrier particles were produced by spray-drying and were calcined at different temperatures ranging from 950 to 1030 °C for 4 h. The chemical-looping performance of the oxygen carriers was examined in a batch fluidized-bed reactor in the temperature range of 900–950 °C under alternating reducing and oxidizing conditions. The mechanical stability of the oxygen carriers was tested in a jet-cup attrition rig. All of the oxygen carriers showed oxygen uncoupling behavior with oxygen concentrations close to equilibrium. During reactivity tests with methane, oxygen carriers with lower mechanical stability showed higher reactivity, yielding almost complete fuel conversion. Oxygen carrier materials based on support mixtures of MgAl2O4/TiO2, MgAl2O4/SiO2, and TiO2/SiO2 showed a combination of high mechanical stability, low attrition rates, good reactivity with methane, and oxygen uncoupling behavior.
Therapy of Diarrhea in COVID-19 with External Treatment of Traditional Chinese Medicine (2020)

Review question / Objective: This meta-analysis of randomized controlled trials evaluated the effectiveness and safety of External Treatment of Traditional Chinese Medicine for diarrhea in COVID-19.Condition being studied: From the end of 2019 to the present, COVID-19 has become a common problem worldwide now.At present, there is no effective antiviral drug confirmed by COVID-19.Diarrhea is common in patients with COVID-19.TCM has a unique theory and a long history of clinical practice.Due to its reliable efficacy and few side effects, it is widely used to treat diarrhea as one of TCM characteristic therapies.External treatment of traditional Chinese medicine includes acupuncture, moxibustion, massage, and acupoint application, acupoint embedding, etc.In China, External treatment of traditional Chinese medicine has been widely used in treating diarrhea in COVID-19, but there is still a lack of evidence-based medical evaluation.
CTS™ immune cell SR for serum free culture and expansion of human T cells (2015)

Meeting abstracts The manufacture of a majority of clinical T cell products for immunotherapy applications requires in vitro T cell culture and expansion. Commercialization of T cell manufacturing processes requires reagents that meet regulatory guidelines and ultimately help reduce manufacturing
PageRank: B (2021)

Abstract In this chapter, we take a second look at the concepts that we introduced in PageRank-A. The main ideas concern the long-term behavior of Markov chains and, in particular, the significance of the invariant distribution. As explained in the Introduction, part B of each chapter can be omitted in an introductory course. Section 2.1 discusses the sample space of a Markov chain: the outcomes and their probability. Section 2.2 explains the meaning of the weak and strong laws of large numbers. Section 2.3 proves these results for independent and identically distributed random variables. Section 2.4 proves the strong law of large numbers for Markov chains. Section 2.5 concludes the chapter by proving the Big Theorem for Markov chains.
Design of mM-W Fully Integrated CMOS Standing-Wave VCOs Using Low-Loss CPW Resonators (2012)

The design of two fully integrated 43-GHz voltage-controlled oscillators (VCOs) implemented in a 90-nm CMOS process is presented. Both use standing-wave transmission line resonators instead of a lumped tank to provide extended output frequency ranges and relatively low phase noise (PN). Coplanar waveguide structures with and without slow-wave features were employed in the two VCO circuits. The test results of the manufactured chips were compared. The circuit with the slow-wave feature showed a lower PN (-102.7 dBc/Hz at 1 MHz), whereas the one without the slow-wave structure showed a wider tuning range (1.96 GHz). The two VCOs were developed for use in licensed E-band transceiver systems.
Diheterocyclic compounds from dithiocarbamates and derivatives thereof. II. 2,2′‐Diamino‐6,6′‐bibenzoazoles (1990)

Abstract The readily available dithiocarbamates and dithiocarbonimidates 4, 8, 14 and 15 afford in one step the title compounds in medium to very good yields. In each case, the choice of reagent depends on the nature of the group to be introduced. Their usefulness as synthetic equivalents of weakly reactive or unavailable isothiocyanates is also discussed.
Possible Connection between a Widely Disseminated Conjugative Gentamicin Resistance (pMG1-Like) Plasmid and the Emergence of Vancomycin Resistance in Enterococcus faecium (2002)

A total of 640 vancomycin-resistant Enterococcus faecium (VRE) isolates, which were obtained between 1994 and 1999 from the Medical School Hospital of the University of Michigan, Ann Arbor, were used in this study. Of the 640 strains, 611 and 29 were VanA and VanB VRE, respectively, based on PCR analysis. Four hundred ninety-two (77%) of the strains exhibited resistance to concentrations of gentamicin from 64 micro g/ml (MIC) to more than 1,024 micro g/ml (MIC). The gentamicin resistance of each of 261 (53%) of the 492 gentamicin-resistant strains was transferred to E. faecium at a frequency of about 10(-5) to 10(-6) per donor cell in broth mating. More than 90% of vancomycin resistances of the 261 strains cotransferred with the gentamicin resistances to E. faecium strains by filter mating. The conjugative gentamicin resistance plasmids were identified and were classified into five types (A through E) with respect to their EcoRI restriction profiles. The transfer frequencies of each type of plasmid between E. faecium strains or Enterococcus faecalis strains were around 10(-3) to 10(-5) per donor cell or around 10(-6) to 10(-7) per donor cell, respectively, in broth mating. Type A and type B were the most frequently isolated, at an isolation frequency of about 40% per VRE isolate harboring the gentamicin resistance conjugative plasmid. The plasmids did not show any homology in Southern hybridization with the pheromone-responsive plasmids and broad-host-range plasmids pAMbeta1 and pIP501. The EcoRI or NdeI restriction fragments of each type of plasmids hybridized to the conjugative gentamicin resistance plasmid pMG1 (65.1 kb), which was originally isolated from an E. faecium clinical isolate, and transfer efficiently in broth mating.
Generating Expression in Synthesized Speech (1989)

The document examines the proposal that affect can be reproduced in synthesized speech by imitating the effects of emotion in human speech. A program, the Affect Editor, was constructed to systematically vary the influence of the speech correlates of emo...
Organosilica Nanoparticles with an Intrinsic Secondary Amine: An Efficient and Reusable Adsorbent for Dyes (2017)

Nanomaterials are promising tools in water remediation because of their large surface area and unique properties compared to bulky materials. We synthesized an organosilica nanoparticle (OSNP) and tuned its composition for anionic dye removal. The adsorption mechanisms are electrostatic attraction and hydrogen bonding between the amine on OSNP and the dye, and the surface charge of the OSNP can be tuned to adsorb either anionic or cationic dyes. Using phenol red as a model dye, we studied the effect of the amine group, pH, ionic strength, time, dye concentration, and nanomaterial mass on the adsorption. The theoretical maximum adsorption capacity was calculated to be 175.44 mg/g (0.47 mmol/g), which is higher than 67 out of 77 reported adsorbents. The experimental maximum adsorption capacity is around 201 mg/g (0.53 mmol/g). Furthermore, the nanoparticles are highly reusable and show stable dye removal and recovery efficiency over at least 10 cycles. In summary, the novel adsorbent system derived from the intrinsic amine group within the frame of OSNP are reusable and tunable for anionic or cationic dyes with high adsorption capacity and fast adsorption. These materials may also have utility in drug delivery or as a carrier for imaging agents.
Water‐dispersible conducting nanocomposites of binary polymer systems. I. Poly(N‐vinylcarbazole)–polyaniline–Al2O3 nanocomposite system (2004)

Abstract The chemical oxidative polymerization of a mixture of N ‐vinylcarbazole (NVC) and aniline (ANI), by FeCl 3 in aqueous medium, produced an insoluble polymer that contained polyaniline (PANI), along with some residual poly‐ N ‐vinylcarbazole (PNVC) not extractable with benzene. This insoluble PNVC–PANI composite could be obtained as a stable suspension in water when the above polymerization was conducted in the presence of nanodimensional Al 2 O 3 . Alternatively, PNVC–(PANI–Al 2 O 3 ) composite could also be produced by precipitating a THF solution of preformed PNVC onto a PANI–Al 2 O 3 suspension. Likewise PANI–(PNVC–Al 2 O 3 ) could be obtained by polymerizing ANI onto an aqueous suspension of PNVC–Al 2 O 3 . The inclusion of either of these monomer units in the resultant polymer was confirmed by FTIR analysis. SEM analyses revealed formation of a lumpy aggregate, and TEM analyses confirmed particle sizes of the PNVC–PANI–Al 2 O 3 composite to be in the 52–200 nm range. Thermogravimetric stability was in the order: PANI–Al 2 O 3 &lt; PNVC–PANI–Al 2 O 3 &lt; PNVC–Al 2 O 3 . The dc conductivity values (S/cm) followed the trend: PNVC–Al 2 O 3 (10 −7 ) &lt; PNVC–PANI–Al 2 O 3 (1.5 × 10 −4 ) ≈ PANI–Al 2 O 3 (1.1 × 10 −4 ) &lt; PNVC–PANI (1 × 10 −3 ) at ambient temperature. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 803–811, 2004
Fault Diagnosis of Lithium-Ion Battery Pack Based on Hybrid System and Dual Extended Kalman Filter Algorithm (2020)

For guaranteeing the performance and safety of battery systems, a valid fault diagnostic method is quite essential. This article presents a systematic fault diagnostic scheme based on a hybrid system for the typical faults of lithium-ion battery packs, including sensor faults and relay faults. The automata are established based on a hybrid system theory to simultaneously capture the continuous dynamics and discrete dynamics of the battery pack. The distributed diagnostic structure is adopted to avoid constructing the global model of the battery pack so that the computation burden can be reduced. A dual extended Kalman filter algorithm is developed to estimate the parameters, terminal voltages, and state of charges (SOC) of each cell in the battery pack. The current, terminal voltage residual, and SOC residual are used to implement the distinguishability analysis. The diagnostic scheme is implemented based on both the observation of the events and the distinguishability analysis of the continuous dynamics. The performance of the diagnostic method is validated for the battery pack that contains two batteries in series connection and two branches in parallel connection through the Federal Urban Driving Schedule driving cycle.
Toward Using Tire-Road Contact Stresses in Pavement Design and Analysis (2012)

ABSTRACT: Optimization of road pavement design, especially close to the surface of the pavement, requires a more rational approach, which will inevitably include modeling of truck tire-road contact stresses. Various road-surfacing failures have been recorded as evidence that the traditional road pavement engineering tire model idealized by a single uniformly distributed vertical contact stress of circular shape may be inadequate to properly explain and assist in the design against road surface failures. This article therefore discusses the direct measurement of three-dimensional (3D) tire pavement contact stresses using a flatbed sensor system referred to as the “Stress-In-Motion” (SIM) system. The SIM system (or device) consists of multiple conically shaped steel pins, as well as an array of instrumented sensors based on strain gauge technology. The test surface is textured with skid resistance approaching that of a dry asphalt layer. Full-scale truck tires have been tested since the mid-1990s, and results show that 3D tire contact stresses are nonuniform and that the footprint is often not of circular shape. It was found that especially the vertical shape of contact stress distribution changes, mainly as a function of tire loading and associated tire inflation pressures. In overloaded/underinflated cases, vertical contact stresses are the highest toward the edges of the tire contact patch. Higher inflation pressures at lower loads, on the other hand, result in maximum vertical stresses toward the center portion of the tire contact patch. These differences in shape and magnitude need to be incorporated into modern mechanistic-empirical road pavement design tools. Four different idealized tire models were used to represent a single tire type to demonstrate effects of tire modeling on the road pavement response of a typical South African pavement structure incorporating a relatively thin asphalt surfacing. Only applied vertical stress was used for the analyses. It was found that the fatigue life of the road surface layer can be reduced by as much as 94% and strain energy of distortion be increased by a factor of 2.8, depending on the characteristics of the tire model input selected for road pavement design and analysis.
An immunologically active, adipose-derived extracellular matrix biomaterial for soft tissue reconstruction: concept to clinical trial (2022)

Soft tissue reconstruction remains an intractable clinical challenge as current surgical options and synthetic implants may produce inadequate outcomes. Soft tissue deficits may be surgically reconstructed using autologous adipose tissue, but these procedures can lead to donor site morbidity, require multiple procedures, and have highly variable outcomes. To address this clinical need, we developed an "off-the-shelf" adipose extracellular matrix (ECM) biomaterial from allograft human tissue (Acellular Adipose Tissue, AAT). We applied physical and chemical processing methods to remove lipids and create an injectable matrix that mimicked the properties of lipoaspirate. Biological activity was assessed using cell migration and adipogenesis assays. Characterization of regenerative immune properties in a murine muscle injury model revealed that allograft and xenograft AAT induced pro-regenerative CD4<sup>+</sup> T cells and macrophages with xenograft AAT additionally attracting eosinophils secreting interleukin 4 (Il4). In immunocompromised mice, AAT injections retained similar volumes as human fat grafts but lacked cysts and calcifications seen in the fat grafts. The combination of AAT with human adipose-derived stem cells (ASCs) resulted in lower implant volumes. However, tissue remodeling and adipogenesis increased significantly in combination with ASCs. Larger injected volumes of porcine-derived AAT demonstrated biocompatibility and greater retention when applied allogeneicly in Yorkshire cross pigs. AAT was implanted in healthy volunteers in abdominal tissue that was later removed by elective procedures. AAT implants were well tolerated in all human subjects. Implants removed between 1 and 18 weeks demonstrated increasing cellular infiltration and immune populations, suggesting continued tissue remodeling and the potential for long-term tissue replacement.
A Bioassay of Treatment of Hemorrhagic Shock (1966)

SHOCK has been variously defined. The simplest definition, "a rude unhinging of life," aptly fits the depth of our state of ignorance about it. Its origins and manifestations vary, but the outcome is, nevertheless, the same: death, or recovery. Looking at the problem philosophically, the outcome in any particular case is unpredictable, and it must be so, as long as we are incapable of determining the biologic significance of each of the physiologic changes that accompany the genesis of shock. Is the fall of oxygen consumption that follows a large hemorrhage and accompanies shock regulatory (positive and good), nonregulatory (negative and bad), or positive at one time during the course of shock and negative at another? Is the acceleration of the secretions of the adrenal medulla and cortex positive and good, or negative and bad? Is the production of vasopressor proteoses and amines good or bad? Is the hyperpotassemia of
Utilization of Pressmud as Amendment of Acid Soil in Nagaland (1983)

Pressmud, a waste product of sugar industry has been utilized for ameliorating acid soils in Nagaland. The effective dose of pressmud was 20 q/ha producing 129.4 and 65.2% increase in maize and wheat yield over control in its direct and residual values, respectively and the net return was appreciably high. In another experiment, 100.8 % higher yield of wheat (over control) was recorded with its application at 20 q/ha. Application of pressmud effectively increased the pH, exchangeable Ca and Mg, lime potential in soils and phosphorus and calcium uptake by crop. The significant and positive correlation values of soil properties with crop yield are corroborant of the ameliorative effect being induced by pressmud in acid soils. Curvilinear regressions of pH with yield, pressmud dose and vice versa were equated to predict the amount of pressmud to be applied and the subsequent crop yield.
De la mélanogénèse au mélanome : le rôle clef de SOX9 dans la cellule mélanocytaire (2008)

Nous avons montre que SOX9 etait exprime in vitro et in vivo par les melanocytes et jouait un role cle dans la melanogenese induite par les radiations ultraviolettes de type B (UVB). Active par l’AMP cyclique puis de la proteine kinase A (PKA), SOX9 va augmenter l’expression des enzymes de la melanogenese en agissant directement sur le facteur de transcription MITF, augmentant in fine la production de melanine au sein des melanosomes. Par ailleurs, nous avons egalement montre qu’Agouti Signaling Protein (ASP), connue pour inhiber la melanogenese, etait capable de diminuer l’expression de SOX9 dans les melanocytes. Cette action permet d’expliquer, du moins en partie, le mecanisme d’action encore meconnu d’ASP. Dans un second temps nous avons etudie l’expression et le role de SOX9 dans les cellules de melanome. Nous avons montre que l’expression de SOX9 etait faible ou nulle dans la grande majorite des biopsies de melanomes que nous avons analysees. SOX9 inhibe la proliferation des cellules de melanomes en activant directement et indirectement le promoteur de p21. Par ailleurs, nous avons montre que SOX9 pouvait restaurer la sensibilite des cellules de melanome a l’acide retinoique en diminuant l’expression de PRAME. La surexpression de SOX9 reduit sensiblement la tumorigenicite des cellules de melanomes in vivo chez la souris et ex vivo sur des modeles de peaux reconstruites humaines. Nous avons enfin montre que des agents capables d’augmenter ou d’activer SOX9, tels que la prostaglandine D2 (PGD2), reproduisaient son action sur la proliferation des melanomes et permettaient egalement de restaurer la sensibilite a l’acide retinoique.