Feasibility studies of time-like proton electromagnetic form factors at PANDA at FAIR

Simulation results for future measurements of electromagnetic proton form factors at \PANDA (FAIR) within the PandaRoot software framework are reported. The statistical precision with which the proton form factors can be determined is estimated. The signal channel $\bar p p \to e^+ e^-$ is studied on the basis of two different but consistent procedures. The suppression of the main background channel, $\textit{i.e.}$ $\bar p p \to \pi^+ \pi^-$, is studied. Furthermore, the background versus signal efficiency, statistical and systematical uncertainties on the extracted proton form factors are evaluated using two different procedures. The results are consistent with those of a previous simulation study using an older, simplified framework. However, a slightly better precision is achieved in the PandaRoot study in a large range of momentum transfer, assuming the nominal beam conditions and detector performance

Feasibility studies of time-like proton electromagnetic form factors at PANDA at FAIR

Simulation results for future measurements of electromagnetic proton form factors at P¯ANDA (FAIR) within the PandaRoot software framework are reported. The statistical precision with which the proton form factors can be determined is estimated. The signal channel p¯p→e+e−p¯p→e+e− is studied on the basis of two different but consistent procedures. The suppression of the main background channel, i.e. p¯p→π+π−p¯p→π+π− , is studied. Furthermore, the background versus signal efficiency, statistical and systematical uncertainties on the extracted proton form factors are evaluated using two different procedures. The results are consistent with those of a previous simulation study using an older, simplified framework. However, a slightly better precision is achieved in the PandaRoot study in a large range of momentum transfer, assuming the nominal beam conditions and detector performance

Mengkategorikan Resiko Kecelakaan Kerja Konstruksi Pada Proyek Pembangunan Pasar Pon Kabupaten Trenggalek Menggunakan Matriks Penilaian Resiko

Construction work accidents become part of construction activities that need to be considered. Work accidents cause considerable losses so that there needs to be proper management of the work safety system. Definition of the risks that occur in construction activities can be done to reduce losses incurred. This research aims to categorize the risk of work accidents that occur in the Trenggalek Regency Pon Market development project. Categorize is done using the risk assessment matrix according to AS /NZS 4360:2004 so that the risk grouping category is obtained. Research methods use quantitative descriptive. The research population of 100 workers consisting of team leaders, architectural experts, structural civil experts, mechanical experts, experts, drafters, project administration, supervisors, artisans and workers with a total of 50 respondents. Data collection is done by distributing questionnaires to respondents. From the results of the questionnaire conducted validity testing and reliability test using IBMSPSS Statistic software. The results of the study obtained the risks that occurred categorized at low and medium levels. At the medium level probability with a scale often occurs that is the type of wound on the limbs. While probability with scale can occur at any time, namely the type of injury on the hand. So that from these results, risk control can be done and what things must be done to avoid work accidents in the Trenggalek Regency Pon Market development project

Feasibility studies for the measurement of time-like proton electromagnetic form factors from p¯ p→ μ+μ- at P ¯ ANDA at FAIR

This paper reports on Monte Carlo simulation results for future measurements of the moduli of time-like proton electromagnetic form factors, | GE| and | GM| , using the p¯ p→ μ+μ- reaction at P ¯ ANDA (FAIR). The electromagnetic form factors are fundamental quantities parameterizing the electric and magnetic structure of hadrons. This work estimates the statistical and total accuracy with which the form factors can be measured at P ¯ ANDA , using an analysis of simulated data within the PandaRoot software framework. The most crucial background channel is p¯ p→ π+π-, due to the very similar behavior of muons and pions in the detector. The suppression factors are evaluated for this and all other relevant background channels at different values of antiproton beam momentum. The signal/background separation is based on a multivariate analysis, using the Boosted Decision Trees method. An expected background subtraction is included in this study, based on realistic angular distributions of the background contribution. Systematic uncertainties are considered and the relative total uncertainties of the form factor measurements are presented

Biosynthesis of bacterial cellulose assisted by symbiosis of osmophilic yeast and acetic acid bacteria

Bakterijska celuloza (BC), koju proizvodi združena kultura kvasaca i bakterija, je nova alternativa polimerima fosilnog podrijetla. U ovom radu, BC proizvedena pomoću kombuche je analizirana i karakterizirana nakon 14 dana fermentacije. Praćena je proizvodnja organskih kiselina (octena i glukonska), etanola i BC u čaju od ribiza zaslađenim saharozom (60 do 120 g/L) te Hestrin-Schramm (HS) podlozi s glukozom, maltozom, fruktozom (1-5 % tež/vol) ili glicerolom (1-5 % vol/vol) kao izvorom ugljika. Najveći prinos je postignut korištenjem saharoze i glukoze, 300 g/L odnosno 151 g/L. Debljina i prinos BC se povećala tijekom fermentacije te s porastom površine i dubinom hranjivog medija. Uzorci su analizirani FT-IR spetroskopijom te je utvrđeno da svi uzorci pokazuju veći postotak kristaliničnosti. Uočena je antimikrobna aktivnost u odnosu na Salmonella typhimurium, Escherichia coli i Pseudomonas sp., a Vibrio cholerae nije bio inhibiran djelovanjem združene kulture kombucha.Bacterial cellulose (BC), which is produced by a symbiotic culture of yeast and bacteria, is a new alternative to conventional polymers based on petroleum. In this study, BC produced from kombucha was analysed and characterized by employing FT-IR and SEM after 14 days of fermentation. The production of organic acids (acetic and gluconic), ethanol and BC in currant tea sweetened with sucrose (60 to 120 g/L) and Hestrin-Schramm (HS) based media containing glucose, maltose, fructose (1-5 % w/v) or glycerol (1-5 % v/v) as carbon sources was studied. The highest BC yield was obtained using sucrose and glucose, 300 g/l and 151 g/L, respectively. The thickness and yield of BC increased with fermentation time and correspondingly with the increase of surface area and depth of media. Analyzing samples by FT-IR spectroscopy, it was detected that all samples had a higher percentage of crystallinity. Antimicrobial activity was observed tested against Salmonella typhimurium, Escherichia coli and Pseudomonas sp., but Vibrio cholerae was not inhibited by kombucha

Perception of Satisfaction and Self-Confidence with High Fidelity Simulation Among Nursing Students in Government Universities.

Background: High Fidelity Simulation (HFS) as a Teaching-Learning Methodology is usually implemented by the teaching institutions in the world.  Several studies were conducted proving the significance of this method on improving the students’ learning. With the several factors that hinder the students’ clinical learning experiences, it is necessary to determine the students’ viewpoint regarding the use of HFS in increasing their confidence and satisfaction. Research Aim: The aim of this study is to assess the student perceptions regarding Satisfaction and self-confidence toward High Fidelity Simulation as a learning. Research methodology: A cross-sectional correlation descriptive design was used in this study which was conducted at king Saud university (KSU) and princess Nourah university (PUN) in Riyadh. A quota stratified was used to recruit the participant female Saudi and non-Saudi BSN student with HFS experience who were asked to complete the questionnaire on student satisfaction and self-confidence regarding HFS in learning scale and the simulation design scale. Results: This study found out that the fidelity (realism) is the most important factor in learning related to HFS. The students were satisfied and confident in utilizing HFS. Significant correlations between the profile of the participants’ age and student academic level and the key of the simulation features were shown.  It was also found out that there were significant correlations between age and marital status with self-confidence in learning through HFS. Conclusion: Simulation as teaching method is as effective tool as a real-life without life-threatening of the patient and promoting students' performance. The fidelity of the simulation is the most important factor to the student and the students were satisfied and confident with current learning related to HFS. Future studies are needed to examine other learning outcomes such as clinical competence, motivation among student using HFS as a learning strategy. Keywords: high fidelity simulation, satisfaction, self-confidence. DOI: 10.7176/JEP/11-12-16 Publication date: April 30th 202

Investigating the Performance of Apodized Fiber Bragg Gratings for Sensing Applications

Fiber Bragg gratings (FBGs) technology has demonstrated its suitability for many applications in recent fiber technologies. Sensing application is one of the main applications of FBGs. In this work, we present a comprehensive investigation for using apodized FBGs in sensing applications. Different evaluation parameters such as, reflectivity, sidelobes, and fullwidth-half-maximum (FWHM) are tested in order to determine the most proper apodization profile for sensors. According to our study, the Blackman apodization gives the best profile that can be used in sensing applications. The reflectivity of Blackman apodization is nearly unity with minimum sidelobes level, -60.3 dB, and narrow FWHM. The length of Blackman apodized FBG is 0.33 cm and Δn = 14.4 x 10‒4 and maximum reflectivity is 99.44%

PANDA Phase One - PANDA collaboration

The Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany, provides unique possibilities for a new generation of hadron-, nuclear- and atomic physics experiments. The future antiProton ANnihilations at DArmstadt (PANDA or P¯ANDA) experiment at FAIR will offer a broad physics programme, covering different aspects of the strong interaction. Understanding the latter in the non-perturbative regime remains one of the greatest challenges in contemporary physics. The antiproton–nucleon interaction studied with PANDA provides crucial tests in this area. Furthermore, the high-intensity, low-energy domain of PANDA allows for searches for physics beyond the Standard Model, e.g. through high precision symmetry tests. This paper takes into account a staged approach for the detector setup and for the delivered luminosity from the accelerator. The available detector setup at the time of the delivery of the first antiproton beams in the HESR storage ring is referred to as the Phase One setup. The physics programme that is achievable during Phase One is outlined in this paper

Precision resonance energy scans with the PANDA experiment at FAIR: Sensitivity study for width and line shape measurements of the X(3872)

This paper summarises a comprehensive Monte Carlo simulation study for precision resonance energy scan measurements. Apart from the proof of principle for natural width and line shape measurements of very narrow resonances with PANDA, the achievable sensitivities are quantified for the concrete example of the charmonium-like X(3872) state discussed to be exotic, and for a larger parameter space of various assumed signal cross-sections, input widths and luminosity combinations. PANDA is the only experiment that will be able to perform precision resonance energy scans of such narrow states with quantum numbers of spin and parities that differ from J P C = 1 - -