gebhart/patrepeval huggingface dataset:
Practical lazy scheduling in sensor networks (2003)

Experience has shown that the power consumption of sensors and other wireless computational devices is often dominated by their communication patterns. We present a practical realization of lazy packet scheduling that attempts to minimize the total transmission energy in a broadcast network by dynamically adjusting each node's transmission power and rate on a per-packet basis. Lazy packet scheduling leverages the fact that many channel coding schemes are more efficient at lower transmission rates; that is, the energy required to send a fixed amount of data can be reduced by transmitting the data at a lower bit rate and transmission powe.The optimal per-packet transmission rate in a multi-node network is governed in practice by the available bit rates of the given transceiver(s), the nodes' delay tolerance, and the offered load at every node contending for the shared broadcast channel. We propose an extension to the traditional CSMACA MAC scheme called L-CSMACA that allows individual nodes to continually estimate the current demand for a broadcast channel and adjust their transmission schedules accordingly. Our simulation results show that L-CSMACA can provide improved energy efficiency in a single-hop, broadcast network (20--25% with more than 10 nodes, and up to 99% for four nodes with a standard power function) for both Poisson and bursty arrivals with only minor degradation the capacity of the channe.
ChemInform Abstract: Retinobenzoic Acids. Part 8. Regulation of Retinoidal Actions by Diazepinylbenzoic Acids. Retinoid Synergists Which Activate the RXR—RAR Heterodimers. (1998)

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.
Imaging Science in Overhead Surveillance (2002)

Abstract Overhead surveillance has come a long way since Tournachon (“Nadar”) collected the first aerial photographs from a hot air balloon in 1858. The invention of the plane made overhead surveillance more practical. Images from space began with Explorer IV in 1959. Today an increasing amount of overhead surveillance imagery is collected by systems that do not require pilots. Satellites are used to collect data high above the earth. (UAVs) (unmanned aerial vehicles) are being used to collect information at lower altitudes. Overhead surveillance systems continue to provide environmental and meteorological data to the scientific community as well as important intelligence data from areas that are difficult to access. Linking together many steps in an image chain creates the final image product produced by an overhead surveillance system. Each link plays a vital role in the final quality of the image. This article discusses the various steps. Surveillance systems are generally categorized by the wavelength region of the electromagnetic spectrum that they image. The earliest cameras used black and white film that captured panchromatic images, i.e., film that is sensitive to the visible portion of the electromagnetic spectrum. Even with CCD (charged coupled devices) detectors today, black and white images are the most common because the light is captured over a broad spectrum of wavelengths, thus allowing a high enough signal to collect high‐resolution images. Visible imaging systems generally acquire images using the sun as the illumination source. After the image data has been downlinked to the groundstation and decompressed, it may be hard to interpret the image due to low contrast, blurred edges, streaks from sensitivity differences between detectors, failed detectors, and discontinuities at the segment boundaries. Image processing techniques can be used to optimize the visual interpretability of the image data. Calibration is performed to remove the streaks, and the data from each detector segment are processed to synthesize an image collected with a single continuous detector array. The image is also processed to remove any image motion effects, such as vehicle oscillation, and geometric distortions that might occur. The image data can also be processed to a specific mapping spatial resolution. The utility of an image should not be equated with quality of the image. For example, geographic surveys can be performed better with overhead images that trade‐off lower resolution for a larger area of coverage. The image acquired at the lower altitude has more detail that can be resolved on the ground, but much of the surrounding information is lost, which may be very important to understand the context of the objects on the ground.
Effectiveness of combined magnetic field bone growth stimulation on lumbar spinal fusion outcomes: a single center retrospective analysis comparing combined magnetic field to no-stimulation (2020)

&lt;p class="abstract"&gt;&lt;strong&gt;Background:&lt;/strong&gt; The objective of this retrospective study was to assess the effect of combined magnetic field (CMF) bone growth stimulation on lumbar fusion outcomes, as compared to no-stimulation.&lt;/p&gt;&lt;p class="abstract"&gt;&lt;strong&gt;Methods:&lt;/strong&gt; This study reviewed fusion efficacy of a consecutive cohort of 652 patients who underwent lumbar fusion surgery at our institution between 2001 and 2018. Fusion status was determined via radiographic analysis, with four surgeons contributing data to this study. The minimum patient follow-up time was 6 months. Previously identified risk factors (i.e. smoking status) were also collected. Statistical analysis was performed using cross-tabulation tests with chi-square analyses, one-way ANOVA’s, and Tukey’s range tests. 53% (343/652) of patients had undergone adjuvant treatment with CMF stimulation.&lt;strong&gt;&lt;/strong&gt;&lt;/p&gt;&lt;p class="abstract"&gt;&lt;strong&gt;Results:&lt;/strong&gt; Patients treated with CMF stimulation had significantly greater fusion success of 97% compared to no stimulation at 62% (p&amp;lt;0.00001). Further, it was observed that smokers had a significantly higher fusion rate with CMF treatment than without electrical stimulation (94% vs 61%, p=0.000032).&lt;/p&gt;&lt;p class="abstract"&gt;&lt;strong&gt;Conclusions:&lt;/strong&gt; Additional studies to evaluate the effectiveness of CMF treatment in patients with risk factors are warranted.&lt;/p&gt;
A Joint Angle Control of Micro Robot Finger with Elastic Element (2003)

フィンガの関節に弾性要素を用いた, ワイヤ駆動のロボットハンドを開発した。弾性要素を線形ねじりばねで近似したフィードフォワード制御法とワイヤ張力を計測して, ニューラルネットワークを構成する制御法を提案し, 関節の角度制御を行った。
Down-regulation of cell surface CXCR4 by HIV-1 (2008)

These results indicated that cell surface CXCR4 was reduced in HIV-1 infected cells, whereas expression of another membrane antigen, CD3, was unaffected. CXCR4 down-regulation may be due to intracellular sequestering of HIV glycoprotein/CXCR4 complexes.
Cyclotrimerization of 2-butyne-1,1,1-d3 by transition metal catalysts (1969)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCyclotrimerization of 2-butyne-1,1,1-d3 by transition metal catalystsGeorge M. Whitesides and William J. EhmannCite this: J. Am. Chem. Soc. 1969, 91, 14, 3800–3807Publication Date (Print):July 1, 1969Publication History Published online1 May 2002Published inissue 1 July 1969https://doi.org/10.1021/ja01042a019RIGHTS & PERMISSIONSArticle Views269Altmetric-Citations71LEARN 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 InReddit PDF (986 KB) Get e-Alerts Get e-Alerts
General discussion (1995)

Peter, Taylor, Roscoe, Doughty, Chipperfield, McKenna, Pyle, Tuck, Lee, Cox, R. L. Jones, Ravishankara, Smith, K. Carslaw, Davidovits, Sodeau, Molina, Crutzen, Plane, Gardner, Biermann and Green, Faraday Discuss., 1995, 100, 441 DOI: 10.1039/FD9950000441
Integrated System Design Using Bayesian Belief Networks (2013)

The use of exact inference discrete Bayesian Belief Networks (BBNs) can be a powerful decision-making tool when considering the conceptual design of complex systems. A design method is demonstrated which applies BBN’s to a conceptual design of a complex system. The notional example system is modeled after a direct energy weapon since it provides an excellent example of the interactions between thermal and electrical management and distribution systems. Assessing interactions and trades between subsystems in of vital importance when attempting to reduce uncertainty and risk early in the design process. It is shown how BBN’s can be used to reduce risk in the conceptual design phase by assessing the impact of uncertainty on the interaction of the various subsystems. Several scenarios are examined which demonstrate the usefulness of such a method. Emphasis is placed on how uncertainty design choices early on in the design phase may have large impacts later in the design cycle. Finally a simulated walkthrough is performed in multiple phases that show how the method may be applied in a design iteration between the system level and subsystem designer.
MCM-41 impregnated with A zeolite precursor: Synthesis, characterization and tetracycline antibiotics removal from aqueous solution (2013)

In this paper, the MCM-41 has been modified by impregnation with zeolite A to prepare a kind of new adsorbent. The adsorption of TC from aqueous solutions onto modified MCM-41 has been studied. It was discovered that the adsorption capability of zeolite A modified MCM-41 (A-MCM-41) increased dramatically after modification. The modified MCM-41 was characterized by X-ray diffraction (XRD), nitrogen adsorption-desorption, Fourier Transform Infrared (FTIR) analysis, Transmission electron microscopy (TEM) images, and <sup>29</sup>Si and <sup>27</sup>Al Magic Angle Spinning Nuclear Magnetic Resonance (MAS NMR) spectra. The modified MCM-41 structure was still retained after impregnated with zeolite A but the surface area and pore diameter decreased due to pore blockage. The adsorption of TC on modified MCM-41 was discussed regarding various parameters such as pH, initial TC concentration, and the reaction time. The pH effects on TC adsorption indicated that the adsorbents had better adsorption performances in acidic and neutral conditions. The adsorption isotherms were fitted well by the Langmuir model. The adsorption kinetics was well described by both pseudo-second order equation and the intra-particle diffusion model. The adsorption behavior in a fixed-bed column system followed Thomas model. The adsorption behavior of TC was the chemical adsorption with an ion exchange process and electrostatic adsorption.
Robust biological image sequence analysis using graph based approaches (2012)

Robust methods for segmentation and tracking are critical for quantitative biology. We give an overview of our recent work on graph based methods for various microscopy image analysis, including tracing over 3-D electron microscopy image stacks, tracking in time-lapse confocal image sequences, and 3D segmentation. We present results on a variety of datasets such as 3-D confocal membrane volumes of the ascidian Ciona, electron micrograph stacks from the rabbit retina, and bright field microscopy time sequence data from mouse retina.
Data from Mitochondrial DNA Mutations as Natural Barcodes for Lineage Tracing of Murine Tumor Models (2023)

&lt;div&gt;Abstract&lt;p&gt;Murine models are indispensable tools for functional genomic studies and preclinical testing of novel therapeutic approaches. Mitochondrial single-cell assay for transposase-accessible chromatin using sequencing (mtscATAC-seq) enables the dissection of cellular heterogeneity and clonal dynamics by capturing chromatin accessibility, copy-number variations (CNV), and mitochondrial DNA (mtDNA) mutations, yet its applicability to murine studies remains unexplored. By leveraging mtscATAC-seq in novel chronic lymphocytic leukemia and Richter syndrome mouse models, we report the detection of mtDNA mutations, particularly in highly proliferative murine cells, alongside CNV and chromatin state changes indicative of clonal evolution upon secondary transplant. This study thus demonstrates the feasibility and utility of multi-modal single-cell and natural barcoding approaches to characterize murine cancer models.&lt;/p&gt;Significance:&lt;p&gt;mtDNA mutations can serve as natural barcodes to enable lineage tracing in murine cancer models, which can be used to provide new insights into disease biology and to identify therapeutic vulnerabilities.&lt;/p&gt;&lt;/div&gt;
Temperature dependent resonant microwave absorption in perpendicular magnetic anisotropy epitaxial films of a spinel ferrite (2019)

We report on the temperature (T), magnetic field (μ0H), and angle (Θ, Φ) dependent resonant absorption of X-band microwaves in spinel ferrite epitaxial films subjected to two distinct states of growth strain. The polar angle (Θ) dependence of the resonance field (Hres) in films with ∼0.5% ab-plane expanded unit cell establishes a distinct perpendicular magnetic anisotropy (PMA). The anisotropy field (Han┴) for Θ = 0° increases monotonically on lowering the temperature from 300 K to 90 K following the behavior of the saturation magnetization (Ms) keeping Han┴/Ms ≈ 1. The narrow resonance linewidth (μ0ΔHres┴ = 3.7 mT at 300 K) and its negligible (±0.3 mT) variation with temperature establish the magnetic softness of these PMA films. The dependence of Hres on Θ, Φ, and T in films subjected to compressive stress shows in-plane cubic anisotropy whose strength is nonmonotonic in temperature. The ∼2.0% compression of the unit cell basal plane also appears to accentuate noncollinearity of sublattice magnetization of such films as indicated by the T-dependence of ΔHres. The thicker films with PMA display spin wave resonances whose position allows determination of the spin wave stiffness constant together with independent determination of Han┴. The resonance characteristics of the PMA films qualify them as potential candidates for frequency agile microwave devices and magnonic circuit elements.
Investigation of Petasis and Ugi reactions in series in an automated microreactor system (2014)

Petasis and Ugi reactions are used successively without intermediate purification, effectively accomplishing a six-component reaction. The examined reactions are transferred from traditional batch reactors to an automated continuous flow microreactor setup, where optimization and kinetic analyses are performed, proposed mechanisms evaluated, and rate-limiting steps determined.
Catalytic nanomaterials for fuel cell by magnetron sputtering (2017)

Conférencier : Amaël Caillard
The use of a CircuLite micro-pump for congenitally corrected transposition of the great arteries (2012)

We report a case of a 49-year old male with a congenitally corrected transposition of the great arteries (ccTGA) implanted with a left atrial to right subclavian artery ventricular assist device (CircuLite) because of the failure of the anatomic right (systemic) ventricle. Additionally, elevated pulmonary pressures and peripheral vascular resistance (7.4 Wood units) prevented him from being put on the transplant list. The implant, performed off-pump through a right minithoracotomy, was uncomplicated and there were no adverse events. Within 1 month of the implant, there was a marked improvement in exercise tolerance and decreases in pulmonary pressures and resistance, so that the patient was able to return to work and became eligible for transplant listing. As of the time of writing, the patient has been supported for 10 months and is awaiting a heart transplant.
DIAGNOSTIC ACCURACY OF LEFT VENTRICULAR FUNCTION FOR IDENTIFYING SEPSIS AMONG EMERGENCY DEPARTMENT PATIENTS WITH NONTRAUMATIC SYMPTOMATIC UNDIFFERENTIATED HYPOTENSION (2005)

The hypothesis of this study states that in emergency department (ED) patients with non-traumatic symptomatic hypotension, the presence of hyperdynamic left ventricular function (LVF) is specific for sepsis as the etiology of shock. We performed a secondary analysis of patients with non-traumatic symptomatic hypotension enrolled in a randomized, clinical diagnostic trial. The study was done in an urban tertiary ED with a census over 100,000 visits per year. Inclusion criteria were non-trauma ED patients aged >17 years, initial vital signs consistent with shock (systolic blood pressure <100 mm Hg or shock index >1.0), and agreement of two independent observers for one sign and symptom of circulatory shock. All patients underwent focused ED echocardiography (echo) during initial resuscitation. Echos were reviewed post-hoc by a blinded physician and categorized by qualitative LVF as hyperdynamic (ejection fraction [EF] >55%), normal to moderate impairment (EF 30%-55%), and severe impairment (EF <30%). Main outcome was the criterion standard diagnosis of septic shock. Analyses include the diagnostic performance of LVF, Cohen's kappa for interobserver agreement of LVF, and logistic regression for independent predictors of sepsis. There were 103 echos that were adequate for analysis. The mean age was 57+/-16.7 years, 59% were male, and the mean initial systolic blood pressure was 83+/-11.3 mm Hg. A final diagnosis of septic shock was made in 38% (39/103) of patients. Seventeen of 103 (17%) patients had hyperdynamic LVF with an interobserver agreement of kappa=0.8. The sensitivity and specificity of hyperdynamic LVF for predicting sepsis were 33% (95% CI 19%-50%) and 94% (85%-98%), respectively. Hyperdynamic LVF had a positive likelihood ratio of 5.3 for the diagnosis of sepsis and was a strong independent predictor of sepsis as the final diagnosis with an odds ratio of 5.5 (95% CI 1.1-45). Among ED patients with non-traumatic undifferentiated symptomatic hypotension, the presence of hyperdynamic LVF on focused echo is highly specific for sepsis as the etiology of shock.
The use of mould-templated surface structures for high-quality uniform-lying-helix liquid-crystal alignment (2013)

The chiral-flexoelectrooptic effect in a Uniform Lying Helix (ULH) configuration provides a sub-millisecond in-plane rotation of the optic axis with the application of a transverse field. This enables displays with a wide viewing angle without costly in-plane-type electrodes. The salient challenge is one of alignment of the ULH, which is not topologically compatible with uniform alignment surface treatments. Here, we create a micro-grooved surface structure with features on the micron scale by using a replica-moulding technique. When the cell is assembled, the micro-grooves create channels, and using surface-energy considerations, we explain how and show experimentally that the channels align a cholesteric material in the ULH geometry with the helicoidal axis oriented parallel to the channels. The resultant alignment provides a high level of contrast between crossed polarizers and exhibits an electrooptic response with a switching time of the order of tens of microseconds.
Interaction between positive and negative dielectric microparticles/microorganism in optoelectronic tweezers (2021)

Optoelectronic tweezers (OET) is a noncontact micromanipulation technology for controlling microparticles and cells. In the OET, it is necessary to configure a medium with different electrical properties to manipulate different particles and to avoid the interaction between two particles. Here, a new method exploiting the interaction between different dielectric properties of micro-objects to achieve the trapping, transport, and release of particles in the OET system was proposed. Besides, the effect of interaction between the micro-objects with positive and negative dielectric properties was simulated by the arbitrary Lagrangian-Eulerian (ALE) method. In addition, compared with conventional OET systems relying on fabrication processes involving the assembly of photoelectric materials, a contactless OET platform with an iPad-based wireless-control interface was established to achieve convenient control. Finally, this platform was used in the interaction of swimming microorganisms (positive-dielectric properties) with microparticles (negative-dielectric properties) at different scales. It showed that one particle could interact with 5 particles simultaneously, indicating that the interaction can be applied to enhance the high-throughput transportation capacities of the OET system and assemble some special microstructures. Owing to the low power, microorganisms were free from adverse influence during the experiment. In the future, the interaction of particles in a simple OET platform is a promising alternative in micro-nano manipulation for controlling drug release from uncontaminated cells in targeted therapy research.
On triazoles XLIX. Synthesis of 5,6‐dihydrothiazolo[3,2‐b]‐[1,2,4]triazol‐2‐yl‐, 6,7‐dihydro‐5H‐[1,2,4]triazolo[5,1‐b][1,3]thiazin‐2‐yl‐, and 5,6,7,8‐tetrahydro[1,2,4]triazolo[5,1‐b] [1,3]thiazepin‐2‐yl‐isoquinolinium salts (2003)

Abstract 5′‐Mercapto‐1′ H ‐1,2,4‐triazol‐3′‐yl‐isoquinolinium salts (6) were synthesised by the reaction of ortho ‐acyl phenylacetones (2) or the corresponding pyrylium salts (3) and 5‐amino‐2,3‐dihydro‐1 H ‐1,2,4‐triazole‐3‐thione (5) . Treatment of thioles 6 withα,ω‐dibromoalkanes led to type 15, 16 and 17 isoquinolinium salts condensed with thiazole, thiazine and thiazepine rings. When 6 are reacted with dibromomethane (10) 11 type dimeric structures are obtained.
Self-referenced Doppler optical coherence tomography (2003)

Doppler optical coherence tomography (DOCT) allows simultaneous micrometer-scale resolution cross-sectional imaging of tissue structure and blood flow. Here we demonstrate a fiber-optic, polarization diversity-based differential phase contrast DOCT system as a method to perform self-referenced velocimetry in highly scattering media. Using this strategy we reduced common-mode interferometer noise to &lt;1Hz and improved Doppler estimates in a scattering flow phantom by a factor of 5.