gebhart/patrepeval huggingface dataset:
MUPHOTEN: A MUlti-band PHOtometry Tool for TElescope Network (2022)

Abstract The early and complete temporal characterization of optical, fast, transient sources requires continuous and multiband observations over different timescales (hours to months). For time-domain astronomy, using several telescopes to analyze single objects is the usual method, allowing the acquisition of highly sampled light curves. Taking a series of images each night helps to construct an uninterrupted chain of observations with a high cadence and low duty cycle. Speed is paramount, especially at early times, in order to capture early features in the light curve that help determine the nature of the observed transients and assess their astrophysical properties. However, the problem of rapidly extracting source properties (temporal and color evolution) with a heterogeneous data set remains. Consequently, we present Muphoten , a general and fast-computation photometric pipeline able to address these constraints. It is suitable for extracting transient brightness over multitelescope and multiband networks to create a single homogeneous photometric time series. We show the performance of Muphoten with observations of the optical transient SN 2018cow (from 2018 June to 2018 July), monitored by the GRANDMA network and with the publicly available data of the Liverpool Telescope.
Development of Small Sized Actuator With Compliant Mechanism for Optical Image Stabilization (2010)

In this paper, a voice-coil actuator for OIS integrated in mobile phone camera is developed. The actuator with compliant mechanism is free from friction, so open loop control becomes possible and the performance of optical image stabilization can be improved. The compliant mechanism that consist 4 wires is designed for the OIS actuator and the electromagnetic part is also design and improved by using design of experiments. After all, the final design is fabricated and verified experimentally. The experiment result shows that the developed actuator has sufficient performance and good linearity for open loop control.
Innenrücktitelbild: Polymersome Colloidosomes for Enzyme Catalysis in a Biphasic System (Angew. Chem. 43/2012) (2012)

Eine Pickering-Emulsion die durch vollständig gepackte vernetzte Polymersome an der Wasser/Öl-Grenzfläche stabilisiert ist, wurde hergestellt und in einer enzymatischen Zweiphasenreaktion eingesetzt. In ihrer Zuschrift auf Seite 10904 ff. zeigen J. C. M. van Hest et al., dass die katalytische Leistung und Rezyklierbarkeit der Pickering-Emulsion durch die Einbringung eines Modellenzyms (CalB, rote Bandstruktur) in die Wasserphase oder in das Lumen der Polymersome erhöht wird.
Production Methodologies of Meat Analogues: A Review (2021)

Meat is a non-vegetarian food and is considered as a good source of quality nutrients. Though meat protein provide the required content of good quality protein for the body, they are also associated with higher cholesterol and fat content, which prove to be a leading cause of serious health issues. This became the primary reason for increase in a shift in demands for plant-based protein source foods. The other reason is environmental impact of animal derived products. Meat analogues are plant-based good quality protein source of food that tastes like meat protein, and texture resemble that of meat. These plant-based meat analogues have some amount of anti-nutrients and allergic compounds, but they can be successfully removed by employing certain processing methods and resemble meat in its functionality properties. This approach of mimicking the plantbased foods to resemble meat involves understanding of the biochemical composition and three-dimensional structure of meat, and replicating those qualities using plant-based ingredients. In the current scenario, the best suitable methods of manufacturing meat analogue are by extrusion and structuring techniques. The meat analogues satisfy the need of meat for both vegetarians and non-vegetarians. This review attempts to outline the different manufacturing processes of meat analogue using plant-based foods, and to analyse the best suitable method.
Synthesis of a novel liquid crystalline bisindenocarbazole derivative (2006)

In this paper we describe the synthesis of four new bisindenocarbazole derivatives, prepared by selective bromination of bisindenocarbazole in the 7‐ and 7′‐positions, followed by Suzuki crosscoupling with alkyl‐substituted phenyl, biphenyl and fluorene units. From this new class of fused aromatics a liquid crystalline derivative is reported for the first time. The bisindenocarbazole with two 4‐hexylphenyl side groups exhibits a broad nematic phase between 180 and 250°C, whereas the other derivatives are crystalline or form molecular glasses. All bisindenocarbazoles exhibit high thermal stabilities above 300°C and show excellent electrochemical stability. HOMO and LUMO levels of −5.4 eV and −2.3 eV, respectively, were determined by cyclic voltammetry and optical spectroscopy. The bisindenocarbazoles display a strong blue fluorescence with up to 56% quantum yield in solution.
Obovatine, a New Bisindole Alkaloid from Stemmadenia obovata (1995)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTObovatine, a New Bisindole Alkaloid from Stemmadenia obovataE. Valencia, A. Madinaveitia, J. Bermejo, and A. G. GonzalezCite this: J. Nat. Prod. 1995, 58, 1, 134–137Publication Date (Print):January 1, 1995Publication History Published online1 July 2004Published inissue 1 January 1995https://pubs.acs.org/doi/10.1021/np50115a021https://doi.org/10.1021/np50115a021research-articleACS PublicationsRequest reuse permissionsArticle Views176Altmetric-Citations3LEARN 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-Alertsclose Get e-Alerts
Bénéfices des activités physiques adaptées au cours de l’allogreffe de cellules souches hématopoïétiques : étude de faisabilité (2015)

L’objectif de cette étude est d’évaluer la faisabilité d’un programme d’activités physiques adaptées (APA) chez des adultes atteints d’hémopathies et traités par allogreffe de cellules souches hématopoïétiques (ACSH). Étude contrôlée comparant deux groupes : APA et témoin. Les sujets sont des adultes traités par ACSH. Durant l’intervention (APA de type danse, trois semaines, trois séances hebdomadaires), les critères de jugement de la faisabilité sont l’acceptabilité, l’adhésion, la satisfaction et la fréquence cardiaque cible. La comparaison intergroupe repose sur l’évaluation de la fatigue perçue, du niveau d’anxiété et de dépression. Un taux de 90,6 % d’adhésion est relevé. La fatigue perçue diminue dans le groupe APA, mais cette différence est non significative après contrôle des scores à l’inclusion. Un programme d’APA est faisable chez des sujets traités par ACSH.
Optimized variational analysis scheme of single Doppler radar wind data (1989)

A computer scheme for extracting singularities has been developed and applied to single Doppler radar wind data. The scheme is planned for use in real-time wind and singularity analysis and forecasting. The method, known as Doppler Operational Variational Extraction of Singularities is outlined, focusing on the principle of local symmetry. Results are presented from the application of the scheme to a storm-generated gust front in Oklahoma on May 28, 1987.
Selective enhancement of spatial harmonics of a photorefractive grating (1988)

We demonstrate a technique by which the amplitudes of the various spatial harmonics of a holographic grating written in a photorefractive material may be increased with respect to one another. We show that for holographic recording with a moving intensity grating, the grating velocity may be chosen so as to amplify selectively a given spatial harmonic. This result is derived analytically and tested by measurements of the first three spatial harmonics of a grating written in a photorefractive Bi12SiO20 crystal.
A GMI-based open architecture for building a geographical information search engine over the Internet (2002)

This paper proposes an open architecture for building a geographical information search engine over the Internet based on the Geographical Markup Language (GML). It recognizes the autonomous and heterogeneous nature of the current practice of the Internet by adding GML-enabled wrappers for distributed servers and a mediator tier. The paper then presents a prototype based on the proposed open architecture using the University of Oklahoma's students' addresses.
An address generator of an N-dimensional Hilbert scan (2002)

There are several algorithms for N-dimensional Hilbert (1891) scanning, such as the Butz algorithm and the Quinqueton algorithm. The Butz (1969) algorithm is a mapping function using several bit operations such as shifting, exclusive OR, etc. On the other hand, the Quinqueton (1981) algorithm computes all addresses of this curve using recursive functions, but takes time to compute a one-to-one mapping correspondence. Both algorithms are complex to compute and both are difficult to implement in hardware. We propose a new, simple, non-recursive algorithm for N-dimensional Hilbert scanning using lookup tables. The merit, of our algorithm is that the computation is fast and the hardware implementation is much easier than previous ones.
Tetrafullerene Conjugates for All-Organic Photovoltaics (2008)

The synthesis of two new tetrafullerene nanoconjugates in which four C60 units are covalently connected through different pi-conjugated oligomers (oligo(p-phenylene ethynylene) and oligo(p-phenylene vinylene)) is described. The photovoltaic (PV) response of these C60-based conjugates was evaluated by using them as the only active material in organic solar cells, showing a low PV performance. Photophysical studies in solution demonstrated a very fast ( approximately 10 ps) deactivation of the singlet excited state of the central core unit to produce both charge-separated species (i.e., C60*--oligomer+*-(C60)3 and C60 centered singlet excited states). The charge-separated state recombines partly to the C60 centered singlet state that undergoes subsequent intersystem crossing. Photophysical studies carried out in films support these data, exhibiting long-lived triplet excited states. For both tetrafullerene arrays, the low yield of long-lived charge carriers in thin films accounts for the limited PV response. On the contrary, utilizing the oligo(p-phenylene vinylene) centered precursor aldehyde as an electron donor and antennae unit and mixing with the well-known C60 derivative PCBM, the photophysical studies in films show the formation of long-lived charges. The PV devices constructed from these mixtures showed a relatively high photocurrent of 2 mA cm(-2). The sharp contrast between the nanoconjugates and the physical blends tentatively was attributed to improved charge dissociation and the collection of more favorable energy levels in the blends as a result of partial aggregation of both of the components.
Direct Method of Estimating Average Reservoir Pressure for Flowing Oil and Gas Wells (2010)

Abstract A knowledge of the average reservoir pressure (p¯) and its changes as a function of time or cumulative production is essential to determine the oil-in-place (OIP) or original gas-in-place (OGIP), to estimate reserves and to track and optimize reservoir performance. The common practice of determining p¯ in moderate permeability reservoirs has been to run pressure buildup tests. In the current economic environment, buildup tests are almost non-existent except for very expensive exploratory wells. Moreover, time required for a pressure buildup test to reach p¯ in low permeability reservoirs is prohibitively long. Fortunately, flowing pressures and rate data are continually collected from oil and gas wells. Data quality and quantity is usually good especially from wells installed with permanent pressure gauges. Such data for gas wells is currently being analyzed by assuming OGIP and estimating p¯ required for calculating pseudo time. This is done in an iterative manner for using advanced decline curve analysis methods. The purpose of this paper is to discuss a new finding that will enable direct estimation of p¯ using flowing pressures and rate data obtained from oil and gas wells during the pseudo steady-state flow period. In theory, pseudo steady-state flow requires that a well is produced at a constant rate. However, this limitation can be easily removed based on the work published in the SPE literature by this author and others whereby variable rate data can be converted to constant rate production data. The significance of the subject paper is that it will permit: a) direct determination of p¯ using flowing wellbore pressures and rate data thus facilitating estimates of OGIP and OIP, b) estimation and/or validation of the value of the initial reservoir pressure (pi), which is normally suspect, and finally, c) enhancement or possible elimination of the current iterative process used for determining OGIP by advanced decline curve analysis methods.
Islets Transplanted in Immunoisolation Devices: A Review of the Progress and the Challenges that Remain (2011)

The concept of using an immunoisolation device to facilitate the transplantation of islets without the need for immunosuppression has been around for more than 50 yr. Significant progress has been made in developing suitable materials that satisfy the need for biocompatibility, durability, and permselectivity. However, the search is ongoing for a device that allows sufficient oxygen transfer while maintaining a barrier to immune cells and preventing rejection of the transplanted tissue. Separating the islets from the rich blood supply in the native pancreas takes its toll. The immunoisolated islets commonly suffer from hypoxia and necrosis, which in turn triggers a host immune response. Efforts have been made to improve the supply of nutrients by using proangiogenic factors to augment the development of a vascular supply in the transplant site, by using small islet cell aggregates to reduce the barrier to diffusion of oxygen, or by creating scaffolds that are in close proximity to a vascular network such as the omental blood supply. Even if these efforts are successful, the shortage of donor islet tissue available for transplantation remains a major problem. To this end, a search for a renewable source of insulin-producing cells is ongoing; whether these will come from adult or embryonic stem cells or xenogeneic sources remains to be seen. Herein we will review the above issues and chart the progress made with various immunoisolation devices in small and large animal models and the small number of clinical trials carried out to date.
Separation of human megakaryocytes by state of differentiation on continuous gradients of Percoll: size and ploidy analysis of cells identified by monoclonal antibody to glycoprotein IIb/IIIa (1986)

Human bone marrow was separated on continuous Percoll density gradients to analyze the distribution of cells of the megakaryocytic lineage. Megakaryocytes were identified by indirect immunofluorescence using a monoclonal antibody (LJP4) specific to the glycoprotein IIb/IIIa (GPIIb/IIIa) complex of platelets. Neither endothelial cells nor monocytes expressed the epitope identified by this antibody. Simultaneous measurement of size and ploidy were made on 2,359 GPIIb/IIIa-positive cells. The smallest cells were located in the most dense fractions where 81% of all 2N and 66% of 4N cells were found at densities greater than or equal to 1.050 g/mL. The largest cells were detected in the least dense fractions, with 70% of 16N, 78% of 32N, and 100% of 64N cells found at densities less than 1.050 g/mL. Ninety-four percent of all GPIIb/IIIa-positive cells less than 14 micron in diameter were found at densities greater than 1.050 g/mL. An exception to this inverse relationship was observed in the uppermost gradient fractions where an anomalous distribution of size and ploidy was found. Megakaryocytic viability was identified as being greater than 90% in all fractions. The data show that megakaryocytic differentiation as assessed by size and ploidy varies inversely with Percoll density. Separation of marrow on continuous Percoll gradients may be a useful method to separate megakaryocytes at different stages of differentiation.
Parkinson Hastalığının Etyopatogenezi (2017)

Parkinson hastaligi (PH), bazal ganglionlardan, basta substansia nigra olmak uzere, diger beyin sapi pigmentli noronlarini da etkileyen dejeneratif bir surec olup, tum parkinsonizm olgularinin %80’ini olusturur. Baslica klinik belirtileri istirahat tremoru, bradikinezi, rijidite ve postural refleks bozuklugudur. Prevalans calismalari 65 yasin ustundeki nufusun yaklasik %1’inin bu hastaliga tutuldugunu gostermektedir. Turkiye icin prevalans 111/100 000 olarak bildirilmistir. Gunumuzde bu hastaligin semptomlarinin gelismesinden sorumlu olan nigral dejenerasyonun nedeni bilinmemektedir. Ancak yapilan calismalar dikkate alindiginda, kalitsal yatkinlik, cevresel toksinler ve yaslanmanin bu surecte onemli bir rol oynadigini ve etyopatogenezde multifaktoriyel nedenlerin one ciktigini gormekteyiz. Son zamanlarda bulunan genetik ve biyokimyasal veriler isiginda genetik ve/ veya cevresel nedenlerle hasara ugrayan ubiquitin-proteozom sisteminin Idiopatik Parkinson Hastaligi (IPH)’nin patogenezinden sorumlu ana mekanizma oldugu dusunulmektedir. Biz bu makalede PH’nin etyopatogenezindeki molekullerin ve sureclerin toplu halde bir degerlendirmesini yaptik.
The US market for high-speed maglev vehicles (1989)

Recent studies at Argonne National Laboratory have shown that the market for high-speed magnetically levitated vehicles in the US, and in the rest of North America as well, depends strongly on how the technology is implemented. As an upgraded railway technology, it would have important benefits. However, competition with airlines would tend to make the technology uneconomical. Designed as aerospace-type vehicles with special attention to low mass and optimal aerodynamic performance and integrated into airport/airline operations, the technology would complement rather than compete with airlines. The social and economic benefits of maglev technology are discussed, and the economic viability of maglev as an airline/aerospace technology is compared to that as a railroad technology. Governing factors for potential market size and geographic distribution are addressed in detail, and the expected principal routes are described. 8 refs., 3 figs., 6 tabs.
Deciphering the Role of Key Defects in Sb2Se3, a Promising Candidate for Chalcogenide-Based Solar Cells (2020)

Herein, we report a thorough investigation on Sb2Se3, a promising absorber material for photovoltaic applications, using state of the art quantum methods to understand the impact of defects on its electrical properties. The results show that despite a rather small stability domain, Sb2Se3 is easy to synthesize because there is no other possible stable competing binary phase in the Sb/Se system. Our calculations prove that formation of intrinsic n-type defects is unlikely, because Sb vacancies restrain the Fermi level from reaching the CBM vicinity. In contrast, intrinsic p-type semiconductor behavior is expected because of the SbSe antisite defects. Doping is a commonly used technique to impact the charge carrier concentration as well as the charge carrier nature. In that context, several extrinsic defects were considered, based on tin and copper to enhance the native p-typeness, and halogenides (Cl, Br, I) to induce n-type doping in Sb2Se3. Our results tend to prove that Sb2Se3:Cu(p)/Sb2Se3:I(n) might be a viable homojunction for photovoltaic devices.
Assessment of Microcirculation of an Axial Skin Flap Using Indocyanine Green Fluorescence Angiography (1995)

In many cases the complexities of skin-flap microcirculation are difficult to assess despite all the subjective and objective examination techniques available today. Adequate microcirculation is essential for tissue viability, so any method employed for studying microcirculation should provide as accurate an assessment of the prevailing conditions as possible. Of all the clinical methods, the fluorescence technique using the dye sodium fluorescein has so far provided the most reliable results. However, the pharmacokinetic properties of this tracer have prevented the technique from becoming established in clinical practice. The fluorescent dye indocyanine green (Cardio Green), on the other hand, has far more favorable pharmacokinetics. In an experimental animal model, the fluorescence technique using indocyanine green (indocyanine green angiography, ICGA) was used to study postoperative changes in the microcirculation of a skin flap. On the day of operation, indocyanine green angiography revealed a state of hemodynamic imbalance for which the organism was able to compensate in the postoperative phase with the aid of humoral, physical, and metabolic factors. With indocyanine green angiography it was possible to quantify objectively the new hemodynamic equilibrium. Basically, microcirculation may be quantified in temporal and spatial terms. The significant objectivity of indocyanine green angiography and short intervals between each examination favor its possible and meaningful use in clinical practice and give cause for continuing studies.
CPU Isosurface Ray Tracing of Adaptive Mesh Refinement Data (2018)

Adaptive mesh refinement (AMR) is a key technology for large-scale simulations that allows for adaptively changing the simulation mesh resolution, resulting in significant computational and storage savings. However, visualizing such AMR data poses a significant challenge due to the difficulties introduced by the hierarchical representation when reconstructing continuous field values. In this paper, we detail a comprehensive solution for interactive isosurface rendering of block-structured AMR data. We contribute a novel reconstruction strategy-the octant method-which is continuous, adaptive and simple to implement. Furthermore, we present a generally applicable hybrid implicit isosurface ray-tracing method, which provides better rendering quality and performance than the built-in sampling-based approach in OSPRay. Finally, we integrate our octant method and hybrid isosurface geometry into OSPRay as a module, providing the ability to create high-quality interactive visualizations combining volume and isosurface representations of BS-AMR data. We evaluate the rendering performance, memory consumption and quality of our method on two gigascale block-structured AMR datasets.
ChemInform Abstract: Synthesis of Isopropenylcyclopropanes — Revision of the Relative Configuration of Cyclopropyl Ketones Obtained by 1,3‐Elimination of γ‐Epoxy Ketones. (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.