Probing quantum transport by engineering correlations in a speckle potential

We develop a procedure to modify the correlations of a speckle potential. This procedure, that is suitable for spatial light modulator devices, allows one to increase the localization efficiency of the speckle in a narrow energy region whose position can be easily tuned. This peculiar energy-dependent localization behavior is explored by pulling the potential through a cigar-shaped Bose-Einstein condensate. We show that the percentage of dragged atoms as a function of the pulling velocity depends on the potential correlations below a threshold of the disorder strength. Above this threshold, interference effects are no longer clearly observable during the condensate drag.Comment: 8 pages, 8 figures, final versio

Noise spectroscopy with large clouds of cold atoms

Noise measurement is a powerful tool to investigate many phenomena from laser characterization to quantum behavior of light. In this paper, we report on intensity noise measurements obtained when a laser beam is transmitted through a large cloud of cold atoms. While this measurement could possibly investigate complex processes such as the influence of atomic motion, one is first limited by the conversion of the intrinsic laser frequency noise to intensity noise via the atomic resonance. This conversion is studied here in details. We show that, while experimental intensity noise spectra collapse onto the same curve at low Fourier frequencies, some differences appear at higher frequencies when the probe beam is detuned from the center of the resonance line. A simple model, based on a mean-field approach, which corresponds to describing the atomic cloud by a dielectric susceptibility, is sufficient to understand the main features. Using this model, the noise spectra allow extracting some quantitative informations on the laser noise as well as on the atomic sample

A Stylometric Analysis of Iranian Poets

This paper presents an investigation into the extent to which the lexical choices made by different poets are distinctive. When a writer, writes, s/he makes lexical choices that make them different from other writers and the writing to some extent can be considered as their fingerprint or in the other word their signature. Authorship analysis by means of textual measurements has been the interest of so many linguists. Authors have their own styles and the stylometrist is interested in finding units which can distinct authors from each other. Statistical analysis has provided different tools for this attempt, by different scholars. Over the past 3 centuries many types of textual tools has been introduced to discriminate different authors objectively that developing in computer programing has played the important role for using these models. In this study by writing a computer program, the styles of different Iranian poets, Attar and Molavi, and Nezami, are investigated in terms of their word length and word richness. Result shows differences between their styles in terms of these parameters. This way of analyzing writing of different authors has some implications in different field of sociolinguistic and TOEFL

Identification of Binding Mode of a Platinum (II) Complex, PtCl2(DIP), and Calf Thymus DNA

The Pt(II) complex, PtCl2(DIP) (DIP = chelating dinitrogen ligand: 4,7-diphenyl-1,10-phenanthroline), was synthesized and characterized by elemental analysis (CHN) and 1H NMR and UV-vis techniques. The binding of this complex to calf thymus DNA was investigated using various physicochemical methods such as spectrophotometric, circular dichroism, spectrofluorometric, melting temperature, and viscosimetric techniques. Upon addition of the complex, important changes were observed in the characteristic UV-Vis bands (hyperchromism) of calf thymus DNA (CT-DNA): increase in melting temperature, sharp increase in specific viscosity of DNA, and induced CD spectral changes. Also the fluorescence spectral characteristics and interaction of Pt complex with DNA have been studied. Pt bound to DNA showed a marked decrease in the fluorescence intensity. The results show that both the complex and the NR molecules can intercalate competitively into the DNA double-helix structure. The experimental results show that the mode of binding of the this complex to DNA is classical intercalation

New surface-modified solid lipid nanoparticles using N-glutaryl phosphatidylethanolamine as the outer shell

Soheila Kashanian1, Abbas Hemati Azandaryani1, Katayoun Derakhshandeh2,3 1School of Chemistry, Nanoscience and Nanotechnology Research Center and Sensor and Biosensor Research Center, Razi University, 2Department of Pharmaceutics, Kermanshah University of Medical Sciences, 3Nanoscience and Technology Research Center School of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, Iran Background: Solid lipid nanoparticles (SLNs) are colloidal carrier systems which provide controlled-release profiles for many substances. In this study, we prepared aqueous dispersions of lipid nanoparticles using a modified, pH-sensitive derivative of phosphatidylethanolamine. Methods: SLNs were prepared using polysorbate 80 as the surfactant and tripalmitin glyceride and N-glutaryl phosphatidylethanolamine as the lipid components. Particle size, polydispersity index, and zeta potential were examined by photon correlation spectroscopy. Morphological evaluation was performed using scanning electron microscopy, atomic force microscopy, and differential scanning calorimetry. Results: Photon correlation spectroscopy revealed a particle hydrodynamic diameter of 165.8 nm and zeta potential of –41.6.0 mV for the drug-loaded nanoparticles. Atomic force microscopy investigation showed the nanoparticles to be 50–600 nm in length and 66.5 nm in height. Differential scanning calorimetry indicated that the majority of SLNs possessed less ordered arrangements of crystals compared with corresponding bulk lipids, which is favorable for improving drug-loading capacity. Drug-loading capacity and drug entrapment efficiency values for the SLNs were 25.32% and 94.32%, respectively. Conclusion: The SLNs prepared in this study were able to control the release of triamcinolone acetonide under acidic conditions. Keywords: solid lipid nanoparticles, high-shear homogenization, triamcinolone acetonide, tripalmitin, phosphatidylethanolamin

A Hybrid Deep Learning-based Approach for Optimal Genotype by Environment Selection

Precise crop yield prediction is essential for improving agricultural practices and ensuring crop resilience in varying climates. Integrating weather data across the growing season, especially for different crop varieties, is crucial for understanding their adaptability in the face of climate change. In the MLCAS2021 Crop Yield Prediction Challenge, we utilized a dataset comprising 93,028 training records to forecast yields for 10,337 test records, covering 159 locations across 28 U.S. states and Canadian provinces over 13 years (2003-2015). This dataset included details on 5,838 distinct genotypes and daily weather data for a 214-day growing season, enabling comprehensive analysis. As one of the winning teams, we developed two novel convolutional neural network (CNN) architectures: the CNN-DNN model, combining CNN and fully-connected networks, and the CNN-LSTM-DNN model, with an added LSTM layer for weather variables. Leveraging the Generalized Ensemble Method (GEM), we determined optimal model weights, resulting in superior performance compared to baseline models. The GEM model achieved lower RMSE (5.55% to 39.88%), reduced MAE (5.34% to 43.76%), and higher correlation coefficients (1.1% to 10.79%) when evaluated on test data. We applied the CNN-DNN model to identify top-performing genotypes for various locations and weather conditions, aiding genotype selection based on weather variables. Our data-driven approach is valuable for scenarios with limited testing years. Additionally, a feature importance analysis using RMSE change highlighted the significance of location, MG, year, and genotype, along with the importance of weather variables MDNI and AP.Comment: 20 pages, 7 figure

Improving the indistinguishability of single photons from an ion-cavity system

We investigate two schemes for generating indistinguishable single photons, a key feature of quantum networks, from a trapped ion coupled to an optical cavity. Through selection of the initial state in a cavity-assisted Raman transition, we suppress the detrimental effects of spontaneous emission on the photon's coherence length, measuring a visibility of 81(2)% without subtraction of background counts in a Hong-Ou-Mandel interference measurement, the highest reported for an ion-cavity system. In comparison, a visbility of 50(2)% was measured using a more conventional single photon scheme. We demonstrate through numerical analysis of the single photon generation process that the new scheme produces photons of a given indistinguishability with a greater efficiency than the conventional one. Single photon schemes such as the one demonstrated here have applications in distributed quantum computing and communications, which rely on high fidelity entanglement swapping and state transfer through indistinguishable single photons

The effect of misoprostol on intraoperative blood loss after myomectomy

Background: Uterine myomas are common benign tumors in the reproductive period. Bleeding during myomectomy is one of the major complications. We designed a randomized clinical trial to investigate the effectiveness of misoprostol on reducing Intraoperative Blood Loss (IBL) after myomectomy.Methods: Sixty four patients undergoing abdominal myomectomy were randomized into misoprostol group (n=32) that were given 200 micrograms sublingual misoprostol 0.5 hour before the operation and control group (n=32) that were given placebo. Hemoglobin (Hb) was recorded preoperative, 6 h and 24 h after surgery. Data were analyzed by SPSS software (V.20).Results: Mean of age, body mass index and baseline Hb were not statistically significant between the groups however Hb in 6h after operation were significantly higher in misoprostol group but not significant after 24 h (Hb 6h: 9.8 ±0.8 vs. 9.1 ± 0.9, P=0.003 and Hb 24 h: 10.50 ± 0.56 vs. 10.24 ± 0.58, P=0.066). No difference was observed in terms of anemia and need for blood transfusion after operation among the groups.  Conclusions: Preoperative use of sublingual misoprostol is effective in reducing IBL for women undergoing myomectomies in short time (after 6 h). Further studies should be performed to investigate the effectiveness of preoperative misoprostol with various routes and doses in other post-operative time on reducing IBL in abdominal myomectomy.

Effect of oral evening primrose capsules on ripening of the cervix in nulliparous Iranian pregnant women (A randomized trial)

Introduction: Ripening of the cervix and uterine contractions are two basic factors of a successful delivery. Lack of ripening of the cervix is considered to be one of the problems of delivery. Thus, the present research was designed to determine the effect of oral evening primrose capsules on the ripening of cervix in nulliparous women. Materials and methods: This research has been conducted with the triple-blind randomized trial method on 80 nulliparous women in the 40th week of pregnancy (6th day + 40 weeks) visiting the prenatal clinic Prenatal clinic Shahid Akbarabadi educational and medical center of Iran University of Medical Sciences in 2015. Samples were divided into two equal groups of medicine and placebo with the randomized allocation method. Each of the participants took a bottle containing 14 1000mg oral evening primrose capsules (2 capsules per day, each 12 twelve hours for a week) or the placebo containing 14 1000mg oral capsules of paraffin in similar bottles. Data collecting tools include: demographic specifications questionnaire and the form of the records of the examinations. Data was analyzed through statistical tests and SPSS software version 16 using descriptive inferential statistic. Findings: Similarity of the two groups in terms of individual specifications and Bishop Score before the intervention were reviewed in the two groups and no significant statistical difference was seen between the two groups. The mean of the Bishop score for those who had taken 10 or more capsules after the intervention did not show a statistically significant difference (p=0.110). Conclusion: Consumption of evening primrose did not show a considerable improvement in the score. It is recommended to do more comparative studies in this field in later weeks of pregnancy due to the conflicts of the studies

Prevalence of Burnout in residents of obstetrics and gynecology : A systematic review and meta-analysis

Peer reviewedPublisher PD