gebhart/patrepeval huggingface dataset:
Performance Evaluation of Medium-Range Weather Forecast Using Crop Growth Simulator (1996)

Medium range forecast, a recently introduced service in India, has not been evaluated satisfactorily in terms of agricultural applications. In this article an attempt has been made to evaluate the performance of medium range weather forecast for Delhi and Ludhiana environment in the rabi (winter) season of 1994 - 95 by comparing the forecasted with actual weather components, mainly maximum and minimum temperature, wind speed, sunshine hours, and rainfall. Furthermore, yield and growth response of wheat simulated under adequate, moderate, and limited irrigated conditions were compared for forecasted and actual weathers employing wheat growth simulator (WTGROWS). Medium-range forecast performance for predicting maximum and minimum temperatures for both the locations had predictability lying in the range of 70 to 85 percent. The precision was somewhat better in case of maximum temperature assessment. Wind speed for both locations was poorly assessed. Forecasted rainfall matched actual rainfall on some occasions only at Ludhiana but the performance, in terms of seventy-two hours around the forecasted time, gave better results. The observed bright sunshine hours showed poor predictability (less than 30%). Forecasted grain yields for all levels of soil moisture availability treatments at both the locations were.
Copper catalyzed nitrile synthesis from aryl halides using formamide as a nitrile source (2014)

A simple and efficient protocol has been developed for nitrile synthesis from aryl halides in the presence of an inexpensive and easily available copper catalyst along with triphenyl phosphine ligand.
Protective Effect of Sesamin Administration on Exercise-Induced Lipid Peroxidation (2003)

To investigate the mechanism of antioxidative effects of sesamin in vivo, 32 male ddY mice were administered with 10 mg/kg or 100 mg/kg of sesamin (S10, S100), 100 mg/kg of vitamin E (VE100) or control sample (C). They were subjected to 30 min of swimming exercise 2 h after the sample administration by using a new forced-swimming apparatus, i. e. an adjustable-current swimming pool. Exercise resulted in a significant increase in plasma lipid peroxides (LPO) in C and VE100 (p < 0.01), but not in S10 and S100. S100 showed significantly higher total glutathione peroxidase activity and glutathione S-transferase activity in liver compared to C (p < 0.05). In conclusion, sesamin may enhance LPO degradation in the liver resulting in the strong protective effects against exercise-induced plasma lipid peroxidation.
Artificial Neural Network and Response Surface Methodology Modeling in Ionic Conductivity Predictions of Phthaloylchitosan-Based Gel Polymer Electrolyte (2016)

A gel polymer electrolyte system based on phthaloylchitosan was prepared. The effects of process variables, such as lithium iodide, caesium iodide, and 1-butyl-3-methylimidazolium iodide were investigated using a distance-based ternary mixture experimental design. A comparative approach was made between response surface methodology (RSM) and artificial neural network (ANN) to predict the ionic conductivity. The predictive capabilities of the two methodologies were compared in terms of coefficient of determination <i>R</i>² based on the validation data set. It was shown that the developed ANN model had better predictive outcome as compared to the RSM model.
On how electron density affects the redox stability of phenothiazine sensitizers on semiconducting surfaces (2017)

The stabilities of three organic dyes that differ only by two substituents (-OMe, -H and -Br) about the phenothiazine donor unit were evaluated when immobilized on a semiconductor surface. All three dyes delivered modest power conversion efficiencies (PCEs) in the dye-sensitized solar cell (DSSC), but maintained 75% of their initial PCE over 300 h of sustained simulated sunlight. Electron-donating substituents increased the stability of the phenothiazine radical unit created after light-induced charge injection into the semiconductor; however, this did not translate to higher DSSC stability, which appears to be more sensitive to the basicity of the anchoring group for this series.
Subspace Clustering for Situation Assessment in Aquatic Drones: A Sensitivity Analysis for State-Model Improvement (2019)

In this paper, we propose the use of subspace clustering to detect the states of dynamical systems from sequences of observations. In particular, we generate sparse and interpretable models that relate the states of aquatic drones involved in autonomous water monitoring to the properties (e.g., statistical distribution) of data collected by drone sensors. The subspace clustering algorithm used is called SubCMedians. A quantitative experimental analysis is performed to investigate the connections between i) learning parameters and performance, ii) noise in the data and performance. The clustering obtained with this analysis outperforms those generated by previous approaches.
Regioselective Reactions of Organozinc Reagents with 2,4-Dichloroquinoline and 5,7-Dichloropyrazolo[1,5-a]pyrimidine (1999)

Strategies for controlling the regioselective reactions between 2,4-dichloroquinoline and organozinc reagents are described. 2,4-Dichloroquinoline has been found to react with benzylic zinc and phenylzinc reagents in the presence of catalytic amounts of palladium complexes to exclusively give α-substituted products. Several metal salts were examined as an additive for γ-selective coupling reactions. The most effective additive for selective coupling reaction at the γ-position has been found to be LiCl. These conditions for α- or γ-selective coupling reactions were applied to the reaction between 5,7-dichloropyrazolo[1,5-a]pyrimidine and a biphenylmethylzinc reagent in the synthesis of the angiotensin II receptor antagonists. This regioselectivity should be generally applicable to other α,γ-dichloroazine systems.
β-Hydroxylation of α-amino-β-hydroxylbutanoyl-glycyluridine catalyzed by a nonheme hydroxylase ensures the maturation of caprazamycin (2022)

Caprazamycin is a nucleoside antibiotic that inhibits phospho-N-acetylmuramyl-pentapeptide translocase (MraY). The biosynthesis of nucleoside antibiotics has been studied but is still far from completion. The present study characterized enzymes Cpz10, Cpz15, Cpz27, Mur17, Mur23 out of caprazamycin/muraymycin biosynthetic gene cluster, particularly the nonheme αKG-dependent enzyme Cpz10. Cpz15 is a β-hydroxylase converting uridine mono-phosphate to uridine 5' aldehyde, then incorporating with threonine by Mur17 (Cpz14) to form 5'-C-glycyluridine. Cpz10 hydroxylates synthetic 11 to 12 in vitro. Major product 13 derived from mutant Δcpz10 is phosphorylated by Cpz27. β-Hydroxylation of 11 by Cpz10 permits the maturation of caprazamycin, but decarboxylation of 11 by Mur23 oriented to muraymycin formation. Cpz10 recruits two iron atoms to activate dioxygen with regio-/stereo-specificity and commit electron/charge transfer, respectively. The chemo-physical interrogations should greatly advance our understanding of caprazamycin biosynthesis, which is conducive to pathway/protein engineering for developing more effective nucleoside antibiotics.
Les outils de l'ingénierie simultanée (1994)

info:eu-repo/semantics/published
Enhancing trust and liability assisted mechanisms for ZSM 5G architectures (2021)

5G improves previous generations not only in terms of radio access but the whole infrastructure and services paradigm. Automation, dynamism and orchestration are now key features that allow modifying network behaviour, such as Virtual Network Functions (VNFs), and resource allocation reactively and on demand. However, such dynamic ecosystem must pay special attention to security while ensuring that the system actions are trustworthy and reliable. To this aim, this paper introduces the integration of the Manufacturer Usage Description (MUD) standard alongside a Trust and Reputation Manager (TRM) into the INSPIRE-5GPlus framework, enforcing security properties defined by MUD files while the whole infrastructure, virtual and physical, as well as security metrics are continuously audited to compute trust and reputation values. These values are later fed to enhance trustworthiness on the zero-touch decision making such as the ones orchestrating end-to-end security in a closed-loop.
Systematic studies on the effect of water content on the synthesis, crystallisation, conversion and morphology of AlPO4-5 molecular sieve (2000)

The AlPO4-5 molecular sieve is successfully synthesized using the gel composition (C2H5)3N∶Al2O3∶P2O5∶xH2O. It is shown that the water content in the starting molar gel composition plays a dominant role in the synthsis of AlPO4-5. When the water content is low, the conversion of reagents to AlPO4-5 is nearly complete and the synthesized products have better crystallisation, higher crystallinity and the ideal Al/P ratio. SEM also reveals that there is a preference for the formation of thin hexagonal platelets in AlPO4-5 samples synthesized from starting molar gel compositions with 10 or 20 H2O. Reducing the water content in the molar gel composition also results in a longer shelf life for AlPO4-5. Similar structures and thermal behaviour of all of the synthesized samples are also observed in their XRD, FTIR and TGA analysis.
Molecular basis of a microbe-mediated enhancement of symbiotic N/sub 2/-fixation. [Rhizobium meliloti; Pseudomonas syringae pv. tabaci] (1987)

Improvement of biological nitrogen fixation represents a potential source of both increased food production and decreased dependence on costly chemical fertilizer. They report the results of an investigation of the molecular basis of a unique, microbial-mediated mechanism for increased growth and nitrogen fixation rates in alfalfa. Inoculation of alfalfa plants with both Rhizobium meliloti and Pseudomonas syringae pv tabaci provides increased growth and N/sub 2/-fixation rates of alfalfa. Tabaci produces tabtoxinine-..beta..-lactam (T..beta..L), an exocellular product and glutamine synthetase (GS) inhibitor. The association of this pathogen with nodulating alfalfa plants appears to alter the normal regulation of nitrogen fixation such that nitrogenase activity is stimulated and GS activity is inhibited. Studies of the soluble amino acids in these nodules and the activities of the ammonia assimilatory enzymes indicate alternative pathways of ammonia assimilation are being employed.
Flexible security configuration for virtual machines (2008)

Virtual machines are widely accepted as a promising basis for building secure systems. However, while virtual machines offer effective mechanisms to create isolated environments, mechanisms that offer controlled interaction among VMs are immature. Some VM systems include flexible policy models and some enable MLS enforcement, but the flexible use of policy to control VM interactions has not been developed. In this paper, we propose an architecture that enables administrators to configure virtual machines to satisfy prescribed security goals. We describe the design and implementation of such an architecture using SELinux, Xen and IPsec as the tools to express and enforce policies at the OS, VM and Network layers, respectively. We develop a web application using our architecture and show that we can configure application VMs in such a way that we can verify the enforcement of the security goals of those applications.
Optimal design of a multicarrier systems with soft impulse shaping including equalization in time or frequency direction (2002)

Multicarrier systems achieve good results when used for data transmission over mobile radio channels. We discuss design aspects of a multicarrier system with soft impulse shaping (MCSIS). We present symmetry criteria, when transmitting over an AWGN-channel, between equalization either in time or frequency direction. We show that the loss of this symmetry, when transmitting over a mobile radio channel, leads to a multicarrier system that can very flexibly be adapted to the requirements of different transmission environments.
ATTACHMENT OF CERTAIN BACTERIAL STRAINS TO CHICKEN AND BEEF MEAT (1978)

The attachment of bacteria to chicken and beef meat with and without fascia was studied. It was found that bacteria attach readily to the meat surfaces. The kinetics of attachment depend on the bacterial strain, as well as on the meat surface. Of the bacteria tested, Pseudomonas EBT/2/143 attached most readily to all meat surfaces examined. Chicken breast with fascia was the best surface for attachment. A study was also made of the effects of storage on the multiplication of the attached bacteria and the feasibility of removing them. A high level of Salmonella infantis was found in comparison to the other bacteria after 24 h of storage at 20°C. More investigations are needed to find out whether other serotypes of salmonellae will multiply to similar levels on these surfaces. After micro‐colonies began to form, the newly generated bacteria were easy to remove. The hygienic consequence of this phenomenon is discussed.
Dislocation detection using polarization-resolved photoluminescence (1992)

Polarization-resolved photoluminescence is a technique that is capable of accurately measuring mechanical stress in luminescent III–V semiconductors. In this paper, the use of polarization-resolved photoluminescence for the detection and characterization of dislocations from the observed patterns of surface stresses is discussed. Formulae are presented for the calculation of the surface stresses owing to several types of threading and misfit dislocations, and calculated distributions of the expected degree of polarization are illustrated. Examples are given of measured distributions of the degree of polarization, showing excellent agreement with the calculated distributions.
Current-mode amplifier/integrator for a field-programmable analog array (2002)

An electronically-programmable analog circuit (EPAC), based on the switched-capacitor (SC) technique, is an analog counterpart of digital FPGAs. The full speed potential of analog circuits, however, can be utilized only by continuous-time (CT) field-programmable analog arrays (FPAAs). In this paper an example of an FPAA structure with local interconnections is shown. Each cell derives a weighted sum of selected signals from four nearest neighbors, and optionally performs integration (ideal or lossy) to produce its own output signal.
Development and experiment of linear and non-linear precoding on a real-time multiuser-mimo testbed with limited CSI feedback (2012)

This paper presents the development and experimentation of linear precoding (LP) and non-linear precoding (NLP) on a real-time multiuser-multiple input multiple output (MU-MIMO) testbed subject to limited channel state information (CSI) feedback. LP techniques such as zero-forcing and minimum mean square error precoding have already been experimented and the related results are available in the literature. However, they are not capacity-achieving. NLP techniques such as vector perturbation and Tomlinson-Harashima precoding (THP), on the other hand, achieve in theory the capacity of MU-MIMO, but such claims have not been verified in practice, to date. One reason is that theoretical NLP works rely on the assumption of full and perfect CSI at the transmitter as NLP techniques are sensitive to CSI error. The merit of this work is to experimentally confirm (through hardware implementation and pre-field test experimentation) the feasibility of NLP subject to limited CSI feedback using the fading simulator. Experimental results reveal that the testbed achieves less than 2 dB and 3 dB degradation of the block error rate compared to the floating point computer simulations in LP and NLP, respectively.
Optimal bit allocation for coding of video signals over ATM networks (1997)

We consider optimal encoding of video sequences for ATM networks. Two cases are investigated. In one, the video units are coded independently (e.g., motion JPEG), while in the other, the coding quality of a later picture may depend on that of an earlier picture (e.g., H.26x and MPEGx). The aggregate distortion-rate relationship for the latter case exhibits a tree structure, and its solution commands a higher degree of complexity than the former. For independent coding, we develop an algorithm which employs multiple Lagrange multipliers to find the constrained bit allocation. This algorithm is optimal up to a convex-hull approximation of the distortion-rate relations in the case of CBR (constant bit-rate) transmission. It is suboptimal in the case of VBR (variable bit-rate) transmission by the use of a suboptimal transmission rate control mechanism for simplicity. For dependent coding, the Lagrange-multiplier approach becomes rather unwieldy, and a constrained tree search method is used. The solution is optimal for both CBR and VBR transmission if the full constrained tree is searched. Simulation results are presented which confirm the superiority in coding quality of the encoding algorithms. We also compare the coded video quality and other characteristics of VBR and CBR transmission.
The cell cycle positions influence DNA migration as measured with the alkaline comet assay in stimulated human lymphocytes. (1997)

Virtually any eukaryotic cell can be processed for analysis of DNA damage using the comet assay. The most commonly examined human cells are lymphocyte populations. However, many parameters can affect the response of lymphocytes to the assay in terms of the ability to detect damage. The response of cultivated lymphocytes in the comet assay indicated cycle-dependent differences. The cell cycle position has been shown to affect the results obtained using both the alkaline and neutral assays. This is primarily a reflection of the complications of including S-phase DNA. In the alkaline assay, replicating structures are interpreted as strand breaks when denatured, increasing the level of detectable damage. We performed the alkaline comet assay to detect differences in the extent of DNA in stimulated human lymphocytes collected at different sample times after mitogen stimulation. Our results clearly indicate that proliferating lymphocytes have a greater migration of DNA (measured with the comet assay as DNA damage) than quiescent lymphocytes. The lymphocytes collected at 36, 42, and 48 h after mitogen stimulation showed a significantly increased extent of DNA migration in comparison to the lymphocytes collected at 0 and 24 h after stimulation. It, probably, can be explained by the higher frequency of the S phase cells in lymphocyte populations collected at 36, 42, and 48 h. Sites of active DNA replication during the S phase behave like single-strand breaks when denatured in alkali, and their presence may result in a significant increase of the tail moments in S phase cells.
Role of Ascorbic Acid in the Osteoclast Formation: Induction of Osteoclast Differentiation Factor with Formation of the Extracellular Collagen Matrix (2000)

Osteoclasts are bone-resorbing multinucleated cells. Tartrate-resistant acid phosphatase-positive (TRAP-positive) mononuclear and multinucleated cells, which are osteoclast-like cells (OCLs), were formed as a result of the coculture of mouse bone marrow cells and clonal stromal ST2 cells in the presence of 1α,25-dihydroxyvitamin D3. Removal of ascorbic acid from the culture medium prevented the formation of TRAP-positive OCLs. Addition of ascorbic acid to the medium formed TRAP-positive OCLs, and the effect of ascorbic acid was dose-dependent. When we examined the level of messenger RNA (mRNA) for osteoclast differentiation factor (RANKL/ODF) in ST2 cells, we found that ascorbic acid caused an approximately 5-fold increase in the level of this mRNA. The half-life of the mRNA was unaffected by ascorbic acid. To characterize the mechanism of action of ascorbic acid, we investigated the relationship between formation of TRAP-positive OCLs and formation of the collagen matrix. Inhibitors of the formation of collagen triple helices blocked both the formation of TRAP-positive OCLs and the expression of the mRNA for RANKL/ODF in response to ascorbic acid. Our findings suggest that ascorbic acid might be essential for osteoclastogenesis and might induce the formation of TRAP-positive OCLs via induction of the synthesis of RANKL/ODF that is somehow mediated by the extracellular matrix.
Serum L-Tryptofaan en competitieve aminozuren bij depressieve patiënten (1989)

status: Published
Corneal Epithelial Thickness Profile in the Diagnosis of Keratoconus (2009)

An epithelial doughnut pattern appears to indicate the presence of an underlying stromal cone; the lack of an epithelial doughnut pattern would indicate that an abnormal topography was not due to keratoconus. In very early keratoconus, epithelial compensation can mask the presence of an underlying cone on front surface topography, ie, a diagnosis of keratoconus might be missed.
Insights Into Silicon Photonics Mach–Zehnder-Based Optical Transmitter Architectures (2016)

Mach-Zehnder-based modulator architectures lend themselves to the realization of high-data-rate Silicon Photonics transmitters. In this work the challenges set by the integration of such devices on silicon are analyzed in depth. The two main alternative electronic driver architectures, namely multistage and travelling wave, are compared with focus to power efficiency. This is, in fact, a key parameter when considering the stringent requirements of standard module form factors. A 25 Gbps multistage and a 56 Gbps travelling wave modulator have been realized. Each electro-optical transmitter is obtained by the 3D assembly of an electronic IC on top of a photonic IC through copper pillars. STMicroelectronics PIC25G Silicon Photonics platform has been adopted for the fabrication of optical devices, while 65 nm CMOS and 55 nm BiCMOS technologies are exploited to realize the electronic drivers. A 30% better power efficiency compared to Silicon Photonics state-of-the-art at similar data rates and comparable extinction ratio performance has been demonstrated in both cases. Since packaging is also a crucial aspect for Silicon Photonics high volume production, experiments on bare dice as well as on packaged chips are reported.
Non-Markovian Dynamic Time Warping (2015)

This paper proposes a new dynamic time warping (DTW) method, called non-Markovian DTW. In the con-ventional DTW, the warping function is optimized gen-erally by dynamic programming (DP) subject to some Markovian constraints which restrict the relationship between neighboring time points. In contrast, the non-Markovian DTW can introduce non-Markovian con-straints for dealing with the relationship between points with a large time interval. This new and promising abil-ity of DTW is realized by using graph cut as the op-timizer of the warping function instead of DP. Specifi-cally, the conventional DTW problem is first converted as an equivalent minimum cut problem on a graph and then edges representing the non-Markovian constraints are added to the graph. An experiment on online char-acter recognition showed the advantage of using non-Markovian constraints during DTW. 1.