Miracle-dz/UniFAR-FTUs huggingface dataset:
Relocalization of STIM 1 in mouse oocytes at fertilization : early involvement of store-operated calcium entry

Calcium waves represent one of the most important intracellular signaling events in oocytes at fertilization required for the exit from metaphase arrest and the resumption of the cell cycle. The molecular mechanism ruling this signaling has been described in terms of the contribution of intracellular calcium stores to calcium spikes. In this work, we considered the possible contribution of store-operated calcium entry (SOCE) to this signaling, by studying the localization of the protein STIM1 in oocytes. STIM1 has been suggested to play a key role in the recruitment and activation of plasma membrane calcium channels, and we show here that mature mouse oocytes express this protein distributed in discrete clusters throughout their periphery in resting cells, colocalizing with the endoplasmic reticulum marker calreticulin. However, immunolocalization of the endogenous STIM1 showed considerable redistribution over larger areas or patches covering the entire periphery of the oocyte during Ca store depletion induced with thapsigargin or ionomycin. Furthermore, pharmacological activation of endogenous phospholipase C induced a similar pattern of redistribution of STIM1 in the oocyte. Finally, fertilization of mouse oocytes revealed a significant and rapid relocalization of STIM1, similar to that found after pharmacological Ca store depletion. This particular relocalization supports a role for STIM1 and SOCE in the calcium signaling during early stages of fertilization. Reproduction (2009) 138 211–221
Excited Argon 1s5 Production in Microhollow Cathode Discharges

Diode-pumped rare gas lasers (DPRGL) have been in development for their potential to become high energy lasers with excellent beam quality that is typical of gas lasers. DPRGL require metastable densities on the order of 10 cm−3 at pressures around one atmosphere for efficient operation. Argon 1s5 number densities have been measured in microhollow cathode discharges (MHCD) using tunable diode laser absorption spectroscopy. The MHCD had copper electrodes with gaps of 127 and 254 μm and hole diameters from 100-400 μm. Absorbance was measured at pressures of 37 Torr up to 400 Torr, where absorbance could no longer be detected. Fluorescence images were taken both perpendicular to the plate and viewing the hole end on to observe plasma uniformity and determine the absorbance path length. The images revealed the plasma formation was inconsistent and often not in line with the hole, making path length determinations difficult. Assuming a path length equal to the total plate thickness of either 198 or 325 μm resulted in the maximum possible Ar 1s5 number densities, ranging from 5.5× 10 to 4.0× 10 cm−3. The actual number densities could be three times lower depending on the actual path length. There were no consistent trends with hole diameter, pressure, or gap distance. Relative 2p state populations were measured by optical emission spectroscopy and used in a five-level laser model to estimate the electron density, electron temperature and the predicted gain. The relative populations indicate that the plasma was not in local thermodynamic equilibrium. The average electron density and temperature predicted by the model was 1.7 × 10 cm−3 and 1.2 eV respectively. Despite number densities typically used in DPRGL the model predicted that gain would not be achieved due to the high laser threshold that is a result of the short gain length. iv
Enhance photocatalytic properties of TiO2 using π-π* conjugate system

Abstract A novel π-π* conjugate system photo-catalyst was successfully constructed using aniline, pyrrole and TiO2. The structures of photo-catalyst were measured by XRD, SEM, BET, TEM, FT-IR, XPS and TGA in detail. The photocatalytic properties were investigated in rhodamine B and methyl orange solution, respectively. And the enhance mechanism of π-π* conjugate system was discussed in depth. The weight percentage of Ti weight about 47% in the compound and the π-π* conjugate system did not change the crystal structure of TiO2. The photocatalytic degradation properties of the π-π* conjugate system photo-catalyst could get 99% for rhodamine B and methyl orange after 10 and 15 min, respectively. The introduction of the π-π* conjugate system into TiO2 was beneficial to improve light harvest, photoelectric response and separation of electron-holes. GRAPHICAL ABSTRACT
be volatilized from soil into the atmosphere by microorganisms such as fungi , yeast , and bacteria

Arsenic (As) removal through microbially driven biovolatilization can be explored as a potential method for As bioremediation. However, its effectiveness needs to be improved. Biostimulation with organic matter amendment and bioaugmentation with the inoculation of genetic engineered bacteria could be potential strategies for As removal and site remediation. Here, the experiments were conducted to evaluate the impacts of rice straw and biochar amendment, inoculation of genetic engineered Pseudomonas putida KT2440 (GE P. putida) with high As volatilization activity, on microbial mediated As volatilization and removal from three different arseniferous soils. In general, the addition of rice straw (5%) significantly enhanced As methylation and volatilization in comparison with corresponding nonamended soils. Biochar amendments and inoculation of the GE P. putida increased As methylation and volatilization, respectively, but less than that of rice straw addition. The effectiveness of As volatilizations are quite different in the various paddy soils. The combined amendments of rice straw and GE P. putida exhibited the highest As removal efficiency (483.2 μg/kg/year) in Dayu soil, with 1.2% volatilization of the total As annually. The highest water-soluble As concentration (0.73 mg/kg) in this soil could be responsible for highest As volatilization besides the rice straw and bacteria in this soil.
The impact of private sector credit on economic growth in Nigeria

The paper determines empirically the local conditions and policy environment that influence the absorptive capacity of credit in the Nigerian economy for the period 1993:Q1 to 2013:Q4 using fully modified least squares. Findings show that credit is growth-enhancing, even when trade openness, monetary policy, investment climate and infrastructure are low. Also, the composite local condition index analysis revealed that private sector credit increased economic growth when domestic or local conditions were favourable and the absorptive capacity of the domestic economy for credit was estimated at 29% of the GDP in 2013. These results suggest that there is ample room for growthenhancing credit expansion in Nigeria.
Many-particle entanglement in the gaped antiferromagnetic Lipkin model

Bipartite and global entanglement are analyzed for the ground state of a system of N spin-1/2 particles interacting via a collective spin-spin coupling described by the Lipkin-Meshkov-Glick Hamiltonian. Under certain conditions, which include the special case of supersymmetry, the ground state can be constructed analytically. In the case of antiferromagnetic coupling and for an even number of particles, the system has a finite energy gap and the ground state undergoes a smooth transition, as a function of the continuous anisotropy parameter {gamma}, from a separable ({gamma}={infinity}) to a maximally entangled state ({gamma}=0). From the analytic expression for the ground state, the bipartite entanglement between two subsets of spins as well as the global entanglement are calculated. Despite the absence of a quantum phase transition a discontinuous change of the scaling of the bipartite entanglement with the number of spins in the subsystem is found at the isotropy point {gamma}=0: While at {gamma}=0 the entanglement grows logarithmically with the system size with no upper bound, it saturates for {gamma}{ne}0 at a level only depending on {gamma}.
ATR–FTIR SPECTROSCOPY COMBINED WITH CHEMOMETRICS FOR RAPID CLASSIFICATION OF EXTRA VIRGIN OLIVE OILS AND EDIBLE OILS FROM DIFFERENT CULTIVARS AVAILABLE ON THE TURKISH MARKETS

A combination of attenuated total reflectance–Fourier transform infrared (ATR–FTIR) spectroscopy and chemometric techniques was used to classify different trademarks of edible oils available on the Turkish markets. A total of 144 spectra of edible oil samples, including extra virgin olive oil (VOO), hazelnut oil (HNO), cottonseed oil (CSO), sunflower oil (SFO) and soybean oil (SBO), was recorded. The feasibility of ATR–FTIR with multivariate data analysis for discrimination of extra VOOs from other edible oils was also evaluated. Classification of edible oils was performed using principal components analysis (PCA), hierarchical cluster analysis (HCA), linear discriminant analysis (LDA) and soft independent modeling of class analogies (SIMCA). The spectra collected from wavelength region of 4000–650 cm-1 and 28 different wavelength ranges selected from full spectra were evaluated for optimal classification models. All multivariate analysis provided excellent discriminations between the edible oil classes with low classification error. LDA models constructed with five predictors, and a total of 100% of edible oil samples from different trademarks were correctly classified. Furthermore, no misclassification was reported for the discriminant analysis in supervised SIMCA models with an accuracy of 95%. Consequently, ATR–FTIR spectroscopy combined with multivariate data analyses provides excellent illustrations of the relative positions of the different brands of commercial edible oils according to their quality and purity.
C‐N Bond Formation Catalyzed by Ruthenium Nanoparticles Supported on N‐Doped Carbon via Acceptorless Dehydrogenation to Secondary Amines, Imines, Benzimidazoles and Quinoxalines

Ruthenium nanoparticles (NPs) supported on N‐doped carbon (Ru/N−C) were prepared by the pyrolysis of cis‐Ru(phen)2Cl2 loaded onto carbon powder (VULCAN XC72R) at 800 °C. Ru/N−C NPs (0.2 mol% Ru) selectively catalyzed either acceptorless dehydrogenation coupling (ADC) or auto‐transfer‐hydrogen (ATH) reactions of amines with alcohols to imines and secondary amines. Such selectivity could be controlled by the choice of alkali metal ion associated with the base. Under similar catalytic conditions, the ADC cross‐coupling of diamines with primary alcohols or diols afforded the corresponding benzimidazoles and quinoxalines in good to excellent yields. This catalytic system displayed good activity, recyclability, and wide applicability to a diverse range of substrates.
PREPARATION AND APPLICATIONS OF NANOFIBRILLAR CELLULOSES

Nano brillar celluloses are promising new biobased nanomaterials that can be prepared from papergrade chemical pulps and other plant celluloses by mechanical shearing in water, usually after pretreatments. For example, enzymatic hydrolysis, carboxymethylation, addition of cationic polymers, TEMPOmediated oxidation and others have been applied as wood cellulose pretreatments to reduce the energy consumption of the mechanical shearing process and to improve nano brillation level. Nano brillated celluloses (NFCs) prepared from wood cellulose by either enzymatic hydrolysis or partial carboxymethylation and subsequent mechanical shearing in water are convertible to nanopaper lms and aerogels using a ltration process like that used in papermaking, which is advantageous for ef cient removal of water from the strongly swollen NFC/water dispersions. NFCs have high molecular weights and long brils and form bril network structures both in aqueous dispersions and dried nanopaper lms/aerogels. This makes them preferable for use as base materials for nanocomposites. Thus, various nanopaper/matrix composites have been prepared, some of which show remarkably high mechanical strength including high ductility. When TEMPOmediated oxidation is used as the pretreatment, almost completely 25770.indb 737 15/08/2013 12:43 Preferred citation: A. Isogai and L.A. Berglund. Review: Preparation and applications of nanofi brillar celluloses. In Advances in Pulp and Paper Research, Cambridge 2013, Trans. of the XVth Fund. Res. Symp. Cambridge, 2013, (S.J. I’Anson, ed.), pp 737–763, FRC, Manchester, 2018. DOI: 10.15376/frc.2013. 2.737. Akira Isogai and Lars A. Berglund 738 Session 7: Fibres and Micro brillar Cellulose individualized TEMPOoxidized cellulose nano brils (TOCNs) with homogeneous widths of ~3 nm dispersed in water can be prepared from oxidized wood celluloses with carboxylate contents >1.2 mmol/g by gentle mechanical disintegration treatment. Because TOCN elements form nematicordered structures due to their selfassembling behavior in water, TOCNs are able to be converted to dense lms with plywoodlike layered structures, stiff hydrogels by acid treatment, aerogels with extremely high speci c surface areas, and other unique bulk materials. When TOCNs are used to make nanocomposite materials, high mechanical strengths and gasbarrier properties can be achieved even with low TOCNloading ratios.
Impacts of Distance Education on Agricultural Performance and Household Income: Micro-Evidence from Peri-Urban Districts in Beijing

Information communication technology (ICT) has changed the traditional agricultural extension service mode worldwide. This paper examines the effects of the Rural Distance Education Project (RDEP) on the household income, agricultural productivity, and off-farm employment of farmers in peri-urban areas in Beijing. Using the survey data of 783 randomly selected farm households from 54 villages in three Beijing peri-urban districts in 2014, and the propensity score matching method (PSM), we find that the RDEP has a significant and positive effect on agricultural productivity and input use. Meanwhile, the program’s effects are heterogeneous across districts and households. For example, the RDEP has significant impacts on several outcome indicators, such as agricultural labor productivity (at a 5% level of significance), agricultural land productivity (at a 10% level), and input use intensity (at a 1% level) in Tongzhou (an agriculturally more important district, with a more intensive RDEP usage), but none of these effects is significant in Pinggu district. Furthermore, the RDEP is found to have bigger, and statistically more significant effects, for households with junior high school education than for those with either lower or higher than junior high school education. Furthermore, the RDEP is more effective for households with more assets than those with fewer assets. These results point toward the importance of using a rural distance education program as an effective extension service, and the need to take community and individual characteristics into account in the implementation and design of future programs.
Sensitive detection of magnetic fields including their orientation with a magnetometer based on atomic phase coherence

The presence of atomic coherence manifests itself in optical properties of materials through a plethora of effe such as electromagnetically induced transparency ~EIT! @1#, enhanced index of refraction @2#, lasing without population inversion @3,4#, or resonantly enhanced nonlinear proces @5#. Among the interesting applications of these effects i proposal for a new kind of magnetometer @6,7#. Contrary to the common and established techniques of optical mag tometry @8#, it operates in the high-density – strong-fie regime leading to potentially higher signal-to-noise rati This new type of magnetometer utilizes the high dispers at an EIT resonance where the absorption is almost c pletely canceled by quantum interference. For example, for a simple three-level system, as show Fig. 1, the real part of the susceptibility of the probe tran tion, x8, close to the resonance point, is linear in the tw photon detuningD,
Factors Affecting Producer Participation in State-sponsored Marketing Programs: The Case of Fruit and Vegetable Growers in Tennessee

State programs promoting their agricultural products have proliferated in response to increased consumer interest in locally grown foods. Tennessee, for example, currently has two state-funded programs promoting its agricultural products. This study examines the factors associated with participation by Tennessee fruit and vegetable farmers in those programs. The results suggest that farmer participation is associated with farm income, use of extension resources, and fresh produce sales. These results should be of interest to anyone attempting to increase producer participation in such programs.
Proposal for an experiment at PSI Lamb shift in muonic helium The CREMA collaboration : C harge

We propose to measure several transitions frequencies between the 2S and the 2P states (Lamb shift) in muonic helium ions (μ 4He and μ 3He) by means of laser spectroscopy, in order to determine the alpha-particle and helion rms charge radius. In addition, the fine and hyperfine structure components will be revealed, and the magnetic moment distribution radius will be determined. The contribution of the finite size effect to the Lamb shift (2S− 2P energy difference) in μHe is as high as 20%. Therefore a measurement of the transition frequencies with a moderate (for laser spectroscopy) precision of 50 ppm (corresponding to 1/20 of the linewidth) will lead to a determination of the nuclear rms charge radii with a relative accuracy of 3 × 10 (equivalent to 0.0005 fm). The limiting factor for the extraction of the radii from the Lamb shift measurements is given by the uncertainty of the nuclear polarizability contribution. Combined with an ongoing experiment at MPQ aiming to measure the 1S − 2S transition frequency in He, the Lamb shift measurement in μHe will lead to a sensitive test of problematic and challenging bound-state QED terms. This measurement will also help to clarify the discrepancy found in our previous μp experiment. Additionally, a precise knowledge of the absolute nuclear radii of the He isotopes and the hyperfine splitting of μ 3He provide a relevant test of few-nucleon theories.
RAREFIED-GAS COUETTE FLOW AND HEAT TRANSFER BETWEEN PARALLEL PLATES BY MODEL SAMPLING

A rarefied gas with hard-sphere molecules enclosed between parallel walls is ana­ lyzed for the case of couette flow and heat transfer by a model sampling procedure. In one case, both walls are stationary and at different temperatures. In the other case, the upper wall is moving in a direction parallel to the lower wall and both walls are at the same temperature. The wall accommodation factor is taken as unity. The target mole­ cule velocity distribution is presumed to be the sum of two different half-Maxwellians. The parameters desixibing the half-Maxwellians are assumed constant over a given zone. By scoring the properties of sample molecules as they pass scoring positions, the mac­ roscopic quantities, of interest are obtained. The problem is iterated until these values agree with the assumed distribution values.
Delayed coherent quantum feedback from a scattering theory and a matrix product state perspective

We study the scattering of photons propagating in a semi-infinite waveguide terminated by a mirror and interacting with a quantum emitter. This paradigm constitutes an example of coherent quantum feedback, where light emitted towards the mirror gets redirected back to the emitter. We derive an analytical solution for the scattering of two-photon states, which is based on an exact resummation of the perturbative expansion of the scattering matrix, in a regime where the time delay of the coherent feedback is comparable to the timescale of the quantum emitter’s dynamics. We compare the results with numerical simulations based on matrix product state techniques simulating the full dynamics of the system, and extend the study to the scattering of coherent states beyond the low-power limit.
Low temperature thermochronology using thermoluminescence signals from K-feldspar

Abstract Thermoluminescence (TL) and isothermal thermoluminescence (ITL) signals from K-feldspar were studied. The signals from K-feldspar have provided multiple thermometers for thermochronological study. Protocols of multiple aliquot (MA) additive-dose (A) and regenerative-dose (R) have been applied and tested for equivalent dose (De) determinations using TL and ITL signals (MAA-TL, MAR-TL, MAA-ITL and MAR-ITL). Single aliquot regenerative-dose (SAR) protocol was only applied for De determination using ITL signals (SAR-ITL). A 50–60°C translation of heating temperature was necessary for the ITL De values to agree with TL De values. Based on the experiment results and merits-drawbacks comparison of the five tested protocols, the MAR-TL and SAR-ITL are favorable because of their efficiency and accuracy in De determinations. These two protocols were further applied to the samples from the Nujiang River valley and both explicitly demonstrated the thermal history of the samples. They are suitable for K-feldspar thermochronology study. They, as a parallelism of the previous studies of quartz TL and ITL signals, can provide multiple measures for a rock sample with the same thermal history in geo-thermochronological studies.
Open shell effects in a microscopic optical potential for elastic scattering of 6(8)He

Elastic scattering observables (differential cross section and analyzing power) are calculated for the reaction $^6$He(p,p)$^6$He at projectile energies starting at 71 MeV/nucleon. The optical potential needed to describe the reaction is based on a microscopic Watson first-order folding potential, which explicitly takes into account that the two neutrons outside the $^4$He-core occupy an open p-shell. The folding of the single-particle harmonic oscillator density matrix with the nucleon-nucleon t-matrix leads for this case to new terms not present in traditional folding optical potentials for closed shell nuclei. The effect of those new terms on the elastic scattering observables is investigated. Furthermore, the influence of an exponential tail of the p-shell wave functions on the scattering observables is studied, as well as the sensitivity of the observables to variations of matter and charge radius. Finally elastic scattering observables for the reaction $^8$He(p,p)$^8$He are presented at selected projectile energies.
Nuclear Symmetry Energy and Neutron-Proton Pair Correlations in Microscopic Mean Field Theory

The density dependencies of various effective interaction strengths in the relativistic mean field are studied and carefully compared for nuclear matter and neutron stars. The influences of different density dependencies are presented and discussed on mean field potentials, saturation properties for nuclear matter, equations of state, maximum masses, and corresponding radii for neutron stars. Though the interaction strengths and the potentials given by various interactions are quite different in nuclear matter, the differences of saturation properties are subtle, except for NL2 and TM2, which are mainly used for light nuclei, while the properties by various interactions for pure neutron matter are quite different. To get an equation of state for neutron matter without any ambiguity, it is necessary to constrain the effective interactions either by microscopic many-body calculations for the neutron matter data or the data of nuclei with extreme isospin. For neutron stars, the interaction with large interaction strengths give strong potentials and large Oppenheimer-Volkoff (OV) mass limits. The density-dependent interactions DD-ME1 and TW-99 favor a large neutron population due to their weak rho-meson field at high densities. The OV mass limits calculated from different equations of state are 2.02-2.81M, and the corresponding radii are 10.78-13.27 km. After the inclusion of the hyperons, the corresponding values become 1.52-2.06M and 10.24-11.38 km.