gebhart/patrepeval huggingface dataset:
Effect of aerobic pre-treatment on production of hydrolases and volatile fatty acids during anaerobic digestion of solid sisal leaf decortications residues (2008)

The effect of aerobic pretreatment on the production of hydrolases and volatile fatty acids during anaerobic digestion of solid sisal decortications leaf residue (SLDR) was investigated. Batch solid waste bioreactors with working volume of 2 litres were used in this study. Batch loads of aerobically treated or untreated sisal leaf residue inoculated with activated sludge mixed culture were packed into the bioreactors and operated anaerobically for 400 h. The fermentation products were mainly (mg/g total volatile fatty acids, VFAs): acetic acid (287), n-butyric acid (201), n-valeric acid (96) and caproic acid (62) as well as with low amounts of propionic acid and iso-butyric acid for aerobic pre-treated sisal leaf waste solids. Contrarily, for the untreated system, the fermentation products were chiefly (mg/g total volatile fatty acids): propionic acid (317), iso-butyric acid (276), n-butyric acid (96), acetic acid (84) and insignificant amounts of n-valeric acid, iso-valeric acid and caproic acid. Although the activities of hydrolytic enzymes found were similar for both treated and untreated SLDR, proportions of VFAs obtained with the former residues appeared to be better substrates for biomethanantion than those obtained from the latter substrates. These results indicated the potential of aerobic pre-treatment for enhanced bioconversion of SLDR. The present study, reports for the first time the types and levels of VFAs and hydrolases produced during anaerobic digestion of aerobic pre-treated SLDR and could be used as a basis for designing a pilot scale process.
Studies of a direct-current microdischarge based miniaturized plasma thruster (2009)

Presented are the results of preliminary investigations of a direct-current microdischarge based miniaturized plasma thruster called a Microdischarge Plasma Thruster (MPT). The MPT has a triode configuration consisting of electrodes made of molybdenum separated by mica dielectric with argon propellant. Several variations of the triode were studied in order to determine a configuration that provided a relatively stable configuration. The thruster can produce an intense plume with a bluish outline. Current-voltage characteristics of the thruster are reported. Preliminary spectral measurements reveal that the plume emission arises from excited ground states of argon, with no emission from argon ions detected.
[Study of C1423T polymorphism of the von Willebrand factor-cleaving protease gene in Chinese Han population]. (2004)

C1423T polymorphism is low frequency in both controls and patients of Han population.
Enhanced Spatial Resolution Electrical Scanning Probe Microscopy By Using Carbon Nanotube Terminated Tips (2011)

Electrical scanning probe microscopes (SPMs), such as the scanning capacitance microscope for two dimensional dopant profiling, scanning Kelvin force microscope for surface potential measurements, and the tunneling atomic force microscope for dielectric integrity measurements, are important tools for the characterization of CMOS and nanoelectronic devices. A significant limitation of all these techniques is the stray capacitance from the shank of the tip and cantilever, which causes signal averaging over an area much wider than expected from the terminal tip dimensions. We have used conventional SPM tips terminated with a welded carbon nanotube (CNT) to overcome this limitation. We have examined with scanning capacitance microscopy and scanning Kelvin force microscopy, using both conventional and CNT terminated tips, ultra‐shallow junctions, high‐κ gate stacks, low‐κ intermetal dielectrics, and FINFET devices in cross‐section. We have also measured the electrical properties of the CNT terminated tips. Substantial improvement in the spatial resolution was observed with the CNT terminated tips as compared to the conventional tips, but additional artifacts could also be introduced by the CNT tips. CNT terminated tips provided enhanced spatial resolution when used for electrical characterization measurements useful for nanoelectronics.
Agile, efficient virtualization power management with low-latency server power states (2013)

One of the main driving forces of the growing adoption of virtualization is its dramatic simplification of the provisioning and dynamic management of IT resources. By decoupling running entities from the underlying physical resources, and by providing easy-to-use controls to allocate, deallocate and migrate virtual machines (VMs) across physical boundaries, virtualization opens up new opportunities for improving overall system resource use and power efficiency. While a range of techniques for dynamic, distributed resource management of virtualized systems have been proposed and have seen their widespread adoption in enterprise systems, similar techniques for dynamic power management have seen limited acceptance. The main barrier to dynamic, power-aware virtualization management stems not from the limitations of virtualization, but rather from the underlying physical systems; and in particular, the high latency and energy cost of power state change actions suited for virtualization power management.
Robust visual SLAM across seasons (2015)

In this paper, we present an appearance-based visual SLAM approach that focuses on detecting loop closures across seasons. Given two image sequences, our method first extracts one descriptor per image for both sequences using a deep convolutional neural network. Then, we compute a similarity matrix by comparing each image of a query sequence with a database. Finally, based on the similarity matrix, we formulate a flow network problem and compute matching hypotheses between sequences. In this way, our approach can handle partially matching routes, loops in the trajectory and different speeds of the robot. With a matching hypothesis as loop closure information and the odometry information of the robot, we formulate a graph based SLAM problem and compute a joint maximum likelihood trajectory.
Identification of the Constant Chromosome Regions Involved in Human Hematologic Malignant Disease (1982)

Specific consistent chromosome translocations are regularly observed in certain human leukemias and lymphomas. For the myeloid leukemias, the constant recombinants are: the long arm of 9 to chromosome 22 in chronic myeloid leukemia, the long arm of 21 to chromosome 8 in acute myeloblastic leukemia, and the long arm of 17 to chromosome 15 in acute promyelocytic leukemia. Three related translocations are seen in Burkitt lymphoma and B cell acute lymphocytic leukemia; in each one, chromosome 8 is involved with chromosome 2, 14, or 22. Analysis of a complex translocation affecting chromosomes 8 and 14 indicates that the translocation of chromosome 8 to chromosome 14 is the critical constant rearrangement. The analysis of the DNA at the translocation sites of these chromosomes, rather than the reciprocal of each translocation, appears to be the most productive focus for initial study. The various immunoglobulin loci are located in chromosomes 2, 14, and 22, the chromosomes regularly involved in translocations in Burkitt lymphoma and B cell acute lymphocytic leukemia.
Evaluating the coefficient of thermal expansion of additive manufactured AlSi10Mg using microwave techniques (2019)

In this paper we have used laser powder bed fusion (PBF) to manufacture and characterize metal microwave components. Here we focus on a 2.5 GHz microwave cavity resonator, manufactured by PBF from the alloy AlSi10Mg. Of particular interest is its thermal expansion coefficient, especially since many microwave applications for PBF produced components will be in satellite systems where extreme ranges of temperature are experienced. We exploit the inherent resonant frequency dependence on cavity geometry, using a number of TM cavity modes, to determine the thermal expansion coefficient over the temperature range 6–450 K. Our results compare well with literature values and show that the material under test exhibits lower thermal expansion when compared with a bulk aluminium alloy alternative (6063).
Iterative Overlap TD-QRM-ML Block Signal Detection for Single-Carrier Transmission without CP Insertion (2012)

A time-domain maximum likelihood block signal detection employing QR decomposition and M-algorithm (TD-QRM-MLBD) is a computationally efficient near ML detection scheme and can significantly improve the bit error rate (BER) performance of the single-carrier (SC) transmissions in a frequency-selective fading channel, compared to the conventional minimum mean square error based frequency-domain equalization (MMSE-FDE). In TD-QRM-MLBD, the cyclic prefix (CP) is inserted in order to avoid inter-block interference (IBI). However, the CP insertion reduces the transmission efficiency. In this paper, we propose an iterative overlap TD-QRM-MLBD which requires no CP insertion. We evaluate the throughput performance of iterative overlap TD-QRM-MLBD by computer simulation to compare it with the conventional TD-QRM-MLBD with CP insertion.
Combining electrochemical and quantitative elemental analysis to investigate the sulfur poisoning process of ceria thin film fuel electrodes (2021)

This work deals with the effect of sulfur incorporation into model-type GDC thin films on their in-plane ionic conductivity. By means of impedance measurements, a strongly deteriorating effect on the grain boundary conductivity was confirmed, which additionally depends on the applied electrochemical polarisation. To quantify the total amount of sulfur incorporated into GDC thin films, online-laser ablation of solids in liquid (online-LASIL) was used as a novel solid sampling strategy. Online-LASIL combines several advantages of conventional sample introduction systems and enables the detection of S as a minor component in a very limited sample system (in the present case 35 μg total sample mass). To reach the requested sensitivity for S detection using an inductively coupled plasma-mass spectrometer (ICP-MS), the reaction cell of the quadrupole instrument was used and the parameters for the mass shift reaction with O<sub>2</sub> were optimised. The combination of electrical and quantitative analytical results allows the identification of a potential sulfur incorporation pathway, which very likely proceeds along GDC grain boundaries with oxysulfide formation as the main driver of ion transport degradation. Depending on the applied cathodic bias, the measured amount of sulfur would be equivalent to 1-4 lattice constants of GDC transformed into an oxysulfide phase at the material's grain boundaries.
Automatic Multi-Camera Extrinsic Parameter Calibration Based on Pedestrian Torsors † (2019)

Extrinsic camera calibration is essential for any computer vision task in a camera network. Typically, researchers place a calibration object in the scene to calibrate all the cameras in a camera network. However, when installing cameras in the field, this approach can be costly and impractical, especially when recalibration is needed. This paper proposes a novel, accurate and fully automatic extrinsic calibration framework for camera networks with partially overlapping views. The proposed method considers the pedestrians in the observed scene as the calibration objects and analyzes the pedestrian tracks to obtain extrinsic parameters. Compared to the state of the art, the new method is fully automatic and robust in various environments. Our method detect human poses in the camera images and then models walking persons as vertical sticks. We apply a brute-force method to determines the correspondence between persons in multiple camera images. This information along with 3D estimated locations of the top and the bottom of the pedestrians are then used to compute the extrinsic calibration matrices. We also propose a novel method to calibrate the camera network by only using the top and centerline of the person when the bottom of the person is not available in heavily occluded scenes. We verified the robustness of the method in different camera setups and for both single and multiple walking people. The results show that the triangulation error of a few centimeters can be obtained. Typically, it requires less than one minute of observing the walking people to reach this accuracy in controlled environments. It also just takes a few minutes to collect enough data for the calibration in uncontrolled environments. Our proposed method can perform well in various situations such as multi-person, occlusions, or even at real intersections on the street.
Gadolinium complexation by a new diethylenetriaminepentaacetic acid-amide ligand. Amide oxygen coordination (1990)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGadolinium complexation by a new diethylenetriaminepentaacetic acid-amide ligand. Amide oxygen coordinationMark S. Konings, William C. Dow, David B. Love, Kenneth N. Raymond, Steven C. Quay, and Scott M. RocklageCite this: Inorg. Chem. 1990, 29, 8, 1488–1491Publication Date (Print):April 1, 1990Publication History Published online1 May 2002Published inissue 1 April 1990https://pubs.acs.org/doi/10.1021/ic00333a009https://doi.org/10.1021/ic00333a009research-articleACS PublicationsRequest reuse permissionsArticle Views814Altmetric-Citations119LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Fortschrittliche Technologie zum Schleifen von Nockenwellen (2016)

Die komplexe Kinematik und die sich ständig ändernden Eingriffsverhältnisse des Schleifprozesses wurden bestimmt und dann mit dem Jaeger-Modell im KTS angewendet. Anhand eines schnellen Schleifexperiments an zylindrischen Werkstücken wurde der Kennliniengraph (spezifische Energie aufgetragen über die Spandicken) bestimmt. Nun konnten die Energieanteile, die die Körner in Reibung und Spanbildung umsetzen an jedem Punkt entlang der Kontaktfläche zwischen Schleifscheibe und Werkstück gegenübergestellt werden. Infolgedessen konnte die erzeugte Wärmemenge bestimmt werden. Diese Kurve lieferte die Eingangsdaten für das Model zur Suche nach den optimalen Bedingungen.
Experimental Study of Electrical Breakdown in MEMS/NEMS Devices With Deep Submicron Gaps (2023)

We present, for the first time, a systematic experimental study of the minimum gas breakdown voltage in capacitive micro- and nano-electromechanical system (MEMS and NEMS) devices with deep sub-micrometer transduction gaps in the range of 150–250 nanometers. The experiments use MEMS devices incorporating bulk acoustic wave (BAW) capacitive disk resonators fabricated using the HARPSS+ process as test vehicles. Devices with various gap sizes in the form of wafer-level vacuum encapsulated dies and unencapsulated bare devices were tested to observe the breakdown voltages. The results show a close to linear dependency between the breakdown voltage and the gap size. The findings on the breakdown voltages across nanoscale gaps provide a valuable guideline for future capacitive MEMS designs to ensure device reliability. [2023-0112]
Measurement of charm production at central rapidity in proton-proton collisions at $ \sqrt {s} = 2.76\;{\text{TeV}} $ (2012)

A bstract The p t -differential production cross sections of the prompt (B feed-down subtracted) charmed mesons D 0 , D + , and D* + in the rapidity range | y | &lt; 0 . 5, and for transverse momentum 1 &lt; p t &lt; 12 GeV /c , were measured in proton-proton collisions at $ \sqrt {s} = 2.76\;{\text{TeV}} $ with the ALICE detector at the Large Hadron Collider. The analysis exploited the hadronic decays D 0 → K − π + , D + → K − π + π + , D* + → D 0 π + , and their charge conjugates, and was performed on a $ {\mathcal{L}_{{{\rm int} }}} = 1.1\;{\text{n}}{{\text{b}}^{{ - 1}}} $ event sample collected in 2011 with a minimum-bias trigger. The total charm production cross section at $ \sqrt {s} = 2.76\;{\text{TeV}} $ and at 7 TeV was evaluated by extrapolating to the full phase space the p t -differential production cross sections at $ \sqrt {s} = 2.76\;{\text{TeV}} $ and our previous measurements at $ \sqrt {s} = 7\;{\text{TeV}} $ . The results were compared to existing measurements and to perturbative-QCD calculations. The fraction of $ {\text{c}}\overline {\text{d}} $ D mesons produced in a vector state was also determined.
Leaky bucket model for autonomic control of distributed, collaborative systems (2013)

In recent years cloud computing has taken off and has become an underlying technology in many online applications and websites, whether using a private or public cloud. At the same time with the increase in globalization, online collaborative tools have become very important in order to allow different businesses to communicate with each other, or even different parts of the same company to communicate more easily and share data. Previous work introduced an architecture for a geographically distributed, cloud based collaboration application. While the architecture allowed the scaling up and down of the number of cloud instances being used to host media servers, no control scheme for such cloud scaling was provided. In this paper a model and control scheme for cloud scaling for a collaboration application is provided. The model is based on the leaky bucket model commonly used in network control, while the control system is a self-organizing system. A testbed for the architecture is also presented and used in order to gather performance data from the collaborative application.
Simulating the Impact of Cross Resistance Between Bt toxins in Transformed Clover and Apples in New Zealand (2000)

Simulation were conducted to guide development of resistance management strategies aimed at prolonging the usable life of B. thuringiensis (Bt) endotoxins in multiple cropping situations, where different crops expressing Bt endotoxins are host plants for a common pest. We used the New Zealand apple and clover model ecosystem to explore the relative impact on the rate of resistance development of varying levels of cross-resistance between different toxins expressed in these 2 potentially Bt-transformed crops. These 2 crops are hosts for a complex of leaf-rollers in New Zealand, including the light-brown apple moth, used here as the model pest. Cross-resistance was varied between 0.0 and 0.5 (zero to partial cross-resistance) to allow for the case in which selection by one plant has a potential effect on resistance to the toxin in another plant. The largest factor affecting the evolution of resistance was the total habitat area occupied by transgenic orchards. The proportion of the clover habitat that was transformed was also an important factor, even in the absence of cross-resistance. The effect of increasing the proportion of the second transformed crop (clover) acted on resistance evolution mainly by reducing the external refuge of susceptibility for the transgenic orchards. Hence, the ecological implications of reducing the available source of susceptible insects from clover, which can help to slow resistance development in the orchard ecosystem, had a more significant impact than the presence of cross-resistance. Partial cross-resistance between different toxins in the separate crops was overall of relatively minor importance. These simulations have implications for deployment decisions for individual transformed crops in multiple cropping systems, where there is the potential for the crops to serve as refugees for each other. These decisions may need to focus less on cross-resistance between toxins, than on economic trade-offs between the relative roles of individual crops as refugia maintaining susceptibility in the system as a whole.
Known and novel diversity approaches in a JD-CDMA system concept developed within COST 231 (2002)

Presently, standards for third generation mobile radio systems are being developed. The main requirements to be met by third generation mobile radio systems are high cellular spectrum efficiency and high flexibility. In this paper, the focus is on high cellular spectrum efficiency, which is difficult to achieve due to the time variance and frequency selectivity of the mobile radio channel and due to interference. It is known that the degrading effects of these adverse characteristics of the mobile radio channel and of interference can be mitigated by diversity. The way how diversity influences cellular spectrum efficiency is derived in general. Diversity techniques applied in mobile radio systems realize combinations of different types of diversity. As a reference point, the types of diversity used in GSM are analyzed since GSM is the most successful standard of second generation mobile radio systems worldwide. In GSM, the potential for diversity enhancement inherent in code division multiple access (CDMA) is not exploited. Within COST 231, a joint detection code division multiple access (JD-CDMA) system concept aiming at third generation mobile radio systems has been developed which introduces a CDMA feature into systems based on TDMA and FDMA like GSM and also advanced TDMA (ATDMA). The gains achievable by different types of diversity in the JD-CDMA system concept are investigated. It is shown that considerable gains can be achieved by different types of antenna diversity and by exploiting the additional diversity potential of CDMA. Therefore, third generation standards should be flexible in order to allow the use of as many types of diversity as possible to enhance the cellular spectrum efficiency.
A Sensor-Based Dual-Arm Tele-Robotic System (2014)

We present a novel system to achieve coordinated task-based control on a dual-arm industrial robot for the general tasks of visual servoing and bimanual hybrid motion/force control. The industrial robot, consisting of a rotating torso and two seven degree-of-freedom arms, performs autonomous vision-based target alignment of both arms with the aid of fiducial markers, two-handed grasping and force control, and robust object manipulation in a tele-robotic framework. The operator uses hand motions to command the desired position for the object via Microsoft Kinect while the autonomous force controller maintains a stable grasp. Gestures detected by the Kinect are also used to dictate different operation modes. We demonstrate the effectiveness of our approach using a variety of common objects with different sizes, shapes, weights, and surface compliances.