gebhart/patrepeval huggingface dataset:
An efficient UWB radio architecture for busy signal MAC protocols (2005)

Large wireless ad hoc and sensor networks impose tight constraints on cost and power dissipation, so nodes usually adopt a single transceiver approach. Since a single transceiver cannot assess the status of existing transmissions, it wastes valuable time and energy on handshaking packets and corrupted packets. To avoid such overhead, we propose a single transceiver approach based on ultra wideband (UWB) and a companion medium access control (MAC) layer based on busy tone multiple access (BTMA). BTMA reduces the time and energy spent on collisions as compared to handshaking protocols. It is well suited for ad hoc and sensor networks since it permits random, distributed medium access with no central point of failure. The single transceiver leverages the inherently low duty cycle of impulse-based UWB (I-UWB) to assess the status of a packet during its transmission. This paper describes the I-UWB system architecture, and simulations show that it effectively detects a busy signal without affecting data transmission.
Conjugate Heat Transfer Using Liquid Metals and Alloys for Enclosures With Solid Conducting Blocks (2010)

A validated computational model was created to simulate the heat transfer from a heated surface using liquid metals and alloys during conjugate heat transfer. This model explores the effect of the Rayleigh number, Prandtl number, thermal conductivity ratio, and aspect ratio on the Nusselt number along the hot surface. The data will show how to keep the temperature sensitive components along the hot wall cool by maximizing the amount of heat removed from the hot wall. The data show three distinct regions that occur as a function of the Rayleigh number for a fixed k∗ and d∗. The data also show that the thermal conductivity ratio between the fluid and the solid conducting block has little effect on the Nusselt number at a fixed Rayleigh number. However, when examining the effect of the aspect ratio on the Nusselt number, two distinct regions can be seen. The results demonstrate that in order to keep the temperature sensitive components cool along the hot wall, one would want to have large Rayleigh and Prandtl numbers. The easiest way to achieve large Rayleigh numbers is by increasing the height of the enclosure. Large Prandtl numbers can be achieved by choosing a fluid that is highly conductive. In addition, the choice of material for the center solid conducting block does not impact the amount of heat removed from the hot wall. However, increased cooling can be achieved by decreasing the spacing between the hot and the cold wall.
Supramolecular ionics: electric charge partition within polymers and other non-conducting solids (2001)

Electrostatic phenomena in insulators have been known for the past four centuries, but many related questions are still unanswered, for instance: which are the charge-bearing species in an electrified organic polymer, how are the charges spatially distributed and which is the contribution of the electrically charged domains to the overall polymer properties? New scanning probe microscopies were recently introduced, and these are suitable for the mapping of electric potentials across a solid sample thus providing some answers for the previous questions. In this work, we report results obtained with two of these techniques: scanning electric potential (SEPM) and electric force microscopy (EFM). These results were associated to images acquired by using analytical electron microscopy (energy-loss spectroscopy imaging in the transmission electron microscope, ESI-TEM) for colloid polymer samples. Together, they show domains with excess electric charges (and potentials) extending up to hundreds of nanometers and formed by large clusters of cations or anions, reaching supramolecular dimensions. Domains with excess electric charge were also observed in thermoplastics as well as in silica, polyphosphate and titanium oxide particles. In the case of thermoplastics, the origin of the charges is tentatively assigned to their tribochemistry, oxidation followed by segregation or the Mawell-Wagner-Sillars and Costa Ribeiro effects.
The Efficacy of Treatment with Triamcinolone Acetonide in Calcinosis Cutis Following Extravasation of Calcium Gluconate: A Preliminary Study (1997)

Neonatal hypocalcemia is not an uncommon condition, especially in the premature neonate. It is effectively treated by intravenous administration of calcium gluconate. Complications of extravasation during intravenous infusion include localized calcification and occasionally necrosis. When this occurs, however, there is no specific mode of treatment except supportive management and skin graft. This experiment was designed to evaluate the efficacy and safety of treatment with triamcinolone acetonide in calcinosis cutis following extravasation of calcium gluconate. Initially, 2 cc of 10% calcium gluconate was injected subcutaneously into two rabbits at seven sites on the shaved skin of the back. Another two rabbits were injected at the same sites with 0.5 cc of triamcinolone acetonide (10 mg/dl) after injection of 2 cc of 10% calcium gluconate. As a control, 2 cc of normal saline was injected into another rabbit in the same manner. These five rabbits were observed over the next 7 weeks and underwent pathologic examination at various intervals (on days 1, 3, 8, 15, 30, 37, 45). In the 10% calcium gluconate injected rabbits, nodules and large ulcerated lesions developed after 15 days. Multiple, linear, ulcerative and indurated masses were noted on day 37. The lesions healed progressively with a decrease in ulceration, and after 2 months, the masses disappeared gradually. Histologically, on day 15 calcium deposits were seen in the walls of the arteries, veins, dermis, and muscle fibers and epidermal necrosis was seen at the injection sites. From day 37 discharge of calcium deposits began to take place by means of transepidermal elimination. After 2 months, the calcium and mucin deposition was observed focally in the dermis. In the rabbits injected with 10% calcium gluconate and triamcinolone acetonide, mild erythema and induration were seen after day 15 at the injection sites; this gradually disappeared. After 30 days the injection sites were normal in appearance. Histologically, at day 15 calcium deposition was seen in the upper dermis, but after 1 month the injection sites were histologically normal. We suggest that intralesional injection of triamcinolone acetonide for the treatment of calcinosis cutis following extravasation of calcium gluconate is effective, probably due to its antiinflammatory effect and its role in facilitating the resorption of calcium in the tissue.
Assembling of Composite of Ag/TiO<sub>2</sub>/Eu-MCM with Enhanced Photocatalytic Activity (2013)

Ag/TiO 2 /Eu-MCM composite was prepared by a nanofilm of silver coating on a nanofilm of anatase TiO 2­ assembled onto the internal and external pore surface of a hierarchical micro/meso/macroporous molecular sieve Eu-MCM. The composites Ag/TiO 2 /Eu-MCM exhibited significant photocatalytic characteristics with more than four times higher UV-Vis-induced catalytic degradation for phenol than that of pure TiO 2 . The result is attributed to the composites possess vast specific surface areas, big pore width in favor of mass transfer, strong absorbance of nanofilm silver to UV-Vis light, rapid photoelectron transfer from excited nanofilm of TiO 2 to silver nanofilm, and reduction of the recombination probability of hole and photoelectron. There exists an excellent linear correlation with a correlation coefficient 0.979 between photocatalysis and fluorescence of the composite. A photocatalytic intermediate benzoquinone was measured using HPLC techniques during the process of photocatalytic degradation phenol under a weak UV-Vis radiation condition that indicated organic phenol was first oxidized into benzoquinone and finally degraded into inorganic species of carbon dioxide and water.
Study on mechanical properties and crystallization behavior of poly (ethylene terephthalate) reinforced date palm leaf fiber montmorillonite nanocomposites (2012)

Developments in feasible recycled poly (ethylene terephthalate) (PETr) reinforced with surface treated date palm leaf fiber (DPLF) nanocomposites with enhanced mechanical and thermal properties have been studied. Surface modified date palm leaf fiber reinforced PETr/MMT nanocomposites were prepared using twin-screw extruder followed by injection molding. The influence of MMT addition on the mechanical and thermal behavior of the PETr matrix was evaluated. Obtained results showed remarkable enhancements in mechanical properties of PETr/DPLF/MMT nanocomposites upon the addition of five phr nanoclay, which exhibit 8.3% and 38.7% improvements in tensile and flexural modulus respectively compared to those of PETr. The crystallization behavior of the samples analyzed by differential scanning calorimetry (DSC) indicated a decrease in the onset crystallization temperature and showed a higher degree of crystallinity of the nanocomposites compared to PETr, manifesting that both DPLF and MMT could act as nucleating agents. The results point to the nanocomposite's potential in wider outdoor application fields.
Acoustic effects analysis utilizing speckle pattern with fixed-particle Monte Carlo (2016)

Optical imaging in a turbid medium is limited because of multiple scattering a photon undergoes while traveling through the medium. Therefore, optical imaging is unable to provide high resolution information deep in the medium. In the case of soft tissue, acoustic waves unlike light, can travel through the medium with negligible scattering. However, acoustic waves cannot provide medically relevant contrast as good as light. Hybrid solutions have been applied to use the benefits of both imaging methods. A focused acoustic wave generates a force inside an acoustically absorbing medium known as acoustic radiation force (ARF). ARF induces particle displacement within the medium. The amount of displacement is a function of mechanical properties of the medium and the applied force. To monitor the displacement induced by the ARF, speckle pattern analysis can be used. The speckle pattern is the result of interfering optical waves with different phases. As light travels through the medium, it undergoes several scattering events. Hence, it generates different scattering paths which depends on the location of the particles. Light waves that travel along these paths have different phases (different optical path lengths). ARF induces displacement to scatterers within the acoustic focal volume, and changes the optical path length. In addition, temperature rise due to conversion of absorbed acoustic energy to heat, changes the index of refraction and therefore, changes the optical path length of the scattering paths. The result is a change in the speckle pattern. Results suggest that the average change in the speckle pattern measures the displacement of particles and temperature rise within the acoustic wave focal area, hence can provide mechanical and thermal properties of the medium.
A logarithmic-depth quantum carry-lookahead adder (2006)

We present an efficient addition circuit, borrowing techniques from classical carry-lookahead arithmetic. Our quantum carry-lookahead (QCLA) adder accepts two n-bitnumbers and adds them in O(log n) depth using O(n) ancillary qubits. We present bothin-place and out-of-place versions, as well as versions that add modulo 2n and modulo2n - 1. Previously, the linear-depth ripple-carry addition circuit has been the methodof choice. Our work reduces the cost of addition dramatically with only a slight increasein the number of required qubits. The QCLA adder can be used within current modularmultiplication circuits to reduce substantially the run-time of Shor's algorithm.
Simple viral/minimal piggyBac hybrid vectors for stable production of self-inactivating gamma-retroviruses (2015)

This viral-minimal piggyBac hybrid vector allowed for the rapid generation and purification of packaging cells capable of stably producing self-inactivated gamma-retroviruses. This method can be applied to the large-scale production of viruses for use in research, biotechnology, and potentially, clinical trials.
ChemInform Abstract: Synthesis of Substituted 1,2‐Dihydroquinolines and Quinolines Using Ene—Ene Metathesis and Ene—Enol Ether Metathesis. (2002)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Diastereoselectivity Control of the Radical Carboazidation of Substituted Methylenecyclohexanes (2009)

A systematic study of the diastereoselectivity of the radical carboazidation of methylenecyclohexane derivatives is presented. Several substitution patterns leading to a high level of stereocontrol have been identified. Axial attack is the preferred reaction pathway for cyclohexyl radicals, and excellent stereoselectivities can be obtained by introducing an axial substitutent at position 2. In this case, a second equatorial substituent at position 2 may be tolerated without a large detrimental effect on the diastereoselectivity. Finally, a high level of equatorial attack is observed with a very bulky substituent at position 2.
Prevalence and patterns of higher-order interactions (2017)

Abstract Interactions and emergent processes are essential for research on complex systems involving many components. Most studies focus solely on pairwise interactions and ignore higher-order interactions among three or more components. To gain deeper insights into higher-order interactions and complex environments, we study antibiotic combinations applied to pathogenic Escherichia coli and obtain unprecedented amounts of detailed data (251 two-drug combinations, 1512 three-drug combinations, 5670 four-drug combinations, and 13608 five-drug combinations). Directly opposite to previous assumptions and reports, we find higher-order interactions increase in frequency with the number of drugs in the bacteria’s environment. Furthermore, we observe a shift towards net synergy (effect greater than expected based on independent individual effects) and towards emergent antagonism (effect less than expected based on lower-order interaction effects). These findings have implications for the potential efficacy of drug combinations and are crucial for better navigating problems associated with the combinatorial complexity of multi-component systems.
Incorporating diffuse scattering in geometry-based stochastic MIMO channel models (2010)

This paper introduces a model for incorporating the influence of the diffuse scattering in the MIMO radio propagation channel to the popular geometry-based stochastic channel models (GSCM). The proposed model is based on a superposition of clusters, each of which contributes to the channel as a multivariate random variable having a Kronecker structured covariance matrix. These covariance matrices are derived based on parametric modeling of the angular and delay power spectral densities related to each cluster. The model also includes polarization and temporal evolution of the clusters. The proposed approach is validated using a spectral-based visual analysis comparing the model with measured channel sounding data.
An Improved Method for the Production of Ac‐225/Bi‐213 from Th‐229 for Targeted Alpha Therapy (2007)

Abstract This work describes an improved method for radium/actinium separation as part of a process for the production of Ac‐225 from a Th‐229 source for targeted alpha therapy of cancer. The separation method is based on the use of a newly developed extraction chromatographic resin containing the diglycolamide (DGA) class of molecules. The weight distribution ratios of Ac(III) on the extraction chromatographic resins N,N,N′N′ tetraoctyldiglycolamide (TODGA) and N,N,N′N′ tetrakis‐2‐ethylhexyldiglycolamide (TEHDGA) (both Eichrom Inc.) were determined at varying nitric and hydrochloric acid concentrations by batch experiments to optimize conditions for the separation of Ac(III) from Ra(II). Consequently, a robust and rapid procedure based on the use of TEHDGA resin was developed yielding a carrier‐free, clinical‐grade Ac‐225 with an overall yield exceeding 98%.
Demodulation of continuous phase 2FSK signal with Gardner synchronization (2016)

In this paper, a new method of demodulation of continuous phase binary FSK signal is presented, during FSK demodulation, the FSK signal produces In-phase signal (I(t)) and Quadrature signal (Q(t)). And method of Gardner synchronization is used for bit synchronization. When using Gardner synchronization, some changes must be made so that it is suitable for FSK demodulation. It can resist 7% of frequency deviation. And it gets lower bit error rate than traditional method of coherent demodulation when SNR is the same. What's more, there is only 0.1dB SNR loss, 9.78 dB to 9.88 dB, when the bit error rate is 1e-3 when we compare demodulation with Gardner synchronization to optimal receiver demodulation.
ChemInform Abstract: Generation of the Dianion from Tetrasilabicyclo(1.1.0)butane Derivatives. (1987)

Abstract Reductive cyclization of the disilane (VII), which is prepared as outlined in the reaction scheme from diisopropylaniline (I) and the silane (V), yields the tetrasilabicyclobutane (IX).
A modified collagen gel dressing promotes angiogenesis in a preclinical swine model of chronic ischemic wounds (2014)

We recently performed proteomic characterization of a modified collagen gel (MCG) dressing and reported promising effects of the gel in healing full-thickness excisional wounds. In this work, we test the translational relevance of our aforesaid findings by testing the dressing in a swine model of chronic ischemic wounds recently reported by our laboratory. Full-thickness excisional wounds were established in the center of bipedicle ischemic skin flaps on the backs of animals. Ischemia was verified by laser Doppler imaging, and MCG was applied to the test group of wounds. Seven days post wounding, macrophage recruitment to the wound was significantly higher in MCG-treated ischemic wounds. In vitro, MCG up-regulated expression of Mrc-1 (a reparative M2 macrophage marker) and induced the expression of anti-inflammatory cytokine interleukin (IL)-10 and of fibroblast growth factor-basic (β-FGF). An increased expression of CCR2, an M2 macrophage marker, was noted in the macrophages from MCG treated wounds. Furthermore, analyses of wound tissues 7 days post wounding showed up-regulation of transforming growth factor-β, vascular endothelial growth factor, von Willebrand's factor, and collagen type I expression in MCG-treated ischemic wounds. At 21 days post wounding, MCG-treated ischemic wounds displayed higher abundance of proliferating endothelial cells that formed mature vascular structures and increased blood flow to the wound. Fibroblast count was markedly higher in MCG-treated ischemic wound-edge tissue. In addition, MCG-treated wound-edge tissues displayed higher abundance of mature collagen with increased collagen type I : III deposition. Taken together, MCG helped mount a more robust inflammatory response that resolved in a timely manner, followed by an enhanced proliferative phase, angiogenic outcome, and postwound tissue remodeling. Findings of the current study warrant clinical testing of MCG in a setting of ischemic chronic wounds.
A custom processor for node and power management of a battery-less body sensor node in 130nm CMOS (2012)

We present a processor, the Digital Power Manager (DPM), providing power management and node/data/processing flow control for a 130nm battery-less power harvesting body sensor node. The DPM adjusts node power consumption, responding to available energy to support operation exclusively from harvested power. The DPM consumes 2.5pJ/instruction and 0.63pJ/cycle for NOPs.
Increased Intestinal Marker Absorption Due to Regional Permeability Changes and Decreased Intestinal Transit during Sepsis in the Rat (1994)

The results suggest that the increased intestinal absorption during sepsis was due to regional permeability changes and prolonged intestinal transit.
Percutaneous posterolateral lumbar discectomy and decompression with a 6.9-millimeter cannula. Analysis of operative failures and complications. (1991)

The operative failures and complications of percutaneous posterolateral lumbar discectomy were analyzed in 100 patients who had a herniated nucleus pulposus and were prospectively studied and treated with use of a 6.9-millimeter outer-diameter (4.9-millimeter inner-diameter) sheath and manual insertion of the instruments. Twelve operations were considered to have failed, regardless of the length of postoperative follow-up or the incidence of reinjury; eleven patients had a repeat operation at the index level, and one patient was a chronic drug-abuser. In eight of the eleven patients, subsequent laminectomy was successful. Two patients had a psoas hematoma and one had a transitory sensory and distal motor deficit; all of these complications resolved without sequelae. There were no major complications, including superficial or deep infection, and no patient had neurovascular compromise.
Characterization of a high-affinity binding site for a DNA-binding protein from sea urchin embryo mitochondria (1993)

Based on electrophoretic mobility shift assays, DNase I footprinting and modification interference analyses we have identified a sequence-specific DNA-binding protein in blastula stage mitochondria of the sea urchin Strongylocentrotus purpuratus, which interacts with a binding site around the major pause site for DNA replication. This region straddles the boundary of the genes for ATP synthase subunit 6 and cytochrome c oxidase subunit III, and contains also a prominent origin of lagging-strand synthesis. The protein is thermostable, and its natural high-affinity binding site comprises the sequence 5'-AGCCT(N7)AGCAT-3'. Binding studies have demonstrated that two copies of the imperfect repeat, as well as the 7 bp spacing between them, are essential for tight binding. Based on the location of its binding site, we tentatively designate the protein mitochondrial pause-region binding protein (mtPBP) 1.
Recognition of walking behaviors for pedestrian navigation (2002)

This paper presents a method for detecting and classifying walking behaviors based on acceleration measurements of a pedestrian, and is employed in an indoor navigation system currently being developed. The prototype navigation system uses a set of inexpensive and wearable sensors: a bi-axial accelerometer, a digital compass, and an infrared light detector. Using the measured acceleration data, the proposed method can detect forward steps and classify the steps as: "level ground", "up", and "down". The objective of the detection is to count steps for estimating the current position by dead-reckoning using heading measurements. The capability in detecting "up/down" steps can be used to correct estimated position errors. The effectiveness of the proposed method is demonstrated by experiments on six persons.
Pressure stabilized straw tube modules for the PANDA Forward Tracker (2018)

The design of straw tube detector modules developed for the PANDA Forward Tracker is presented. One module consists of 32 straws with 10 mm diameter, arranged in two staggered layers, and has a very low material budget of only 8.8⋅10^{−4}X_{0}. The overpressure of the working gas mixture of 1 bar makes the module self-supporting and enables the use of lightweight and compact support frames. Detection planes in the Forward Tracker consist of modules mounted closely, without gaps, next to each other on a support frame. A module can be mounted and dismounted from the frame without the need to remove the neighboring modules, enabling fast repairs. Technical details of the detector design and the assembly procedure of the straw tubes and the straw modules as well as results of performed tests of the modules are given.