In this paper, we present the physics performance of the ESSnuSB experiment in the standard three flavor scenario using the updated neutrino flux calculated specifically for the ESSnuSB configuration ...and updated migration matrices for the far detector. Taking conservative systematic uncertainties corresponding to a normalization error of Formula omitted for signal and Formula omitted for background, we find that there is Formula omitted Formula omitted CP violation discovery sensitivity for the baseline option of 540 km (360 km) at Formula omitted. The corresponding fraction of Formula omitted for which CP violation can be discovered at more than Formula omitted is Formula omitted. Regarding CP precision measurements, the Formula omitted error associated with Formula omitted is around Formula omitted and with Formula omitted is around Formula omitted Formula omitted for the baseline option of 540 km (360 km). For hierarchy sensitivity, one can have Formula omitted sensitivity for 540 km baseline except Formula omitted and Formula omitted sensitivity for 360 km baseline for all values of Formula omitted. The octant of Formula omitted can be determined at Formula omitted for the values of: Formula omitted ( Formula omitted and Formula omitted) for baseline of 540 km (360 km). Regarding measurement precision of the atmospheric mixing parameters, the allowed values at Formula omitted are: Formula omitted ( Formula omitted) and Formula omitted eV Formula omitted eV Formula omitted ( Formula omitted eV Formula omitted eV Formula omitted) for the baseline of 540 km (360 km).
Display omitted
The aim of this research was to study the biodeterioration activity of bacteria on ancient Egyptian limestone monuments and their treatments. Specimens and swabs were collected from ...seven different archeological sites along Egypt. According to the results of bacterial count, high bacterial load was detected at Senusret I obelisk and Mosque of Elkadi Abd El Basset. Qualitative and quantitative analysis of calcium carbonate degradation showed that the most damaging isolates were Bacillus safensis 9K (MH370265) and Streptomyces rochei 50 (MH370266) with 20.9 and 25.6% of total amounts of CaCO3 degradation, respectively. Environmental scanning electron microscope/Energy dispersive X-ray spectroscopy (ESEM/EDX) and physical characters of stone simulation model revealed that these isolates caused morphological, physical and chemical changes. Among the natural and chemical antimicrobial agents applied directly on the infected models as simulators of treatment and conservation processes, cetrimonium (1 mg/mL), tetra ethyl ammonium bromide (0.6 mg/mL), cinnamon (1 mg/mL) and cinnamon (5 mg/mL) were found to be effective against the two bacterial isolates. Fourier Transform Infrared Spectroscopy (FTIR) analysis for artificially deteriorated stones revealed that the compounds were safe for direct application on limestone monuments when no visual or chemical changes in the stone structure were observed.
A study was carried out on the effect of the root endophytic fungus
on plant systemic signal of defense related genes during fungal or nematode parasitism. Different biotic stress factors were ...examined, inoculating roots of dicot and monocot hosts with the endophyte, and measuring the expression of defense genes in leaves. A first greenhouse assay was carried out on expression of
,
,
and
in leaves of tomato cv Tondino inoculated with
(CBS 120920), inoculating or not the roots of infected plants with
DSM 26985. In a second assay, plants of banana (
cv Grand Naine) were artificially infected with
f. sp.
Tropical race 4 (TR4) and inoculated or not with DSM 26985. In a further experiment, banana plants were inoculated or not with
plus juveniles of the root knot nematode (RKN)
. A similar assay was also carried out in vitro with adults and juveniles of the lesion nematode
. Differential expression of the defense genes examined was observed for all plant-stress associations, indicative of early, upward systemic signals induced by the endophyte. Changes in expression profiles included a 5-fold down-regulation of
at 2 dai in leaves of tomato plants treated with
and/or
, and the up-regulation of
by the endophyte alone, at 2 and 7 dai. In the TR4 assay,
was significantly up-regulated at 7 dai in banana leaves, but only in the
treated plants. At 10 dai,
expression was significantly higher in leaves of plants inoculated only with TR4. The banana-RKN assay showed a
expression significantly higher than controls at 4 and 7 dai in plants inoculated with
alone, and a down-regulation at 4 dai in leaves of plants also inoculated with RKN, with a
differential up-regulation at 10 dai.
down-regulated
at 21 dai, with or without the endophyte, as well as
but only in presence of
. When inoculated alone, the endophyte up-regulated
and
. The gene expression patterns observed in leaves suggest specific and time-dependent relationships linking host plants and
in presence of biotic stress factors, functional to a systemic, although complex, activation of defense genes.
The present study aimed to investigate the potential of plant growth-promoting rhizobacteria (PGPR) to improve the salt stress and alleviate its impact on Stevia crop plant under different levels of ...salt concentration. Two
Streptomyces
spp. isolated from the rhizosphere of halophytic plants (
Cucumis sativus
L. and
Salicornia europaea
L.) have shown potential for plant growth promotion in Stevia plant. The streptomycetes isolates were identified by classical microbiological techniques and partial sequencing of 16S rRNA gene as
Streptomyces variabilis
(4NC) and
S. fradiae
(8PK). The results have shown that inoculation of Stevia plant by these isolates has enhanced plant growth parameters under applied salt stress. Moreover, total cellular proteins were extracted from the two
Streptomyces
isolates and SDS-PAGE technique was conducted. Mass spectrometric analysis has identified unique polypeptide of the elongation factor thermos unstable (EF-Tu) indicating the elevation of ribosomal RNA and ribosomal protein genes transcription. On the same context, alleviation of salt stress in Stevia plants inoculated with the two
Streptomyces
isolates has potentially promoted the accumulation of the major pronounced RuBisCO large subunit protein band detected approximately at 53 kDa. These results may give novel insights and accretion our understanding of salinity tolerance mechanisms using PGP streptomycetes to develop resistant sugar crops of highly important economic value. This study has presented the integration of microbiological, biochemical, and molecular techniques to evaluate the effect of salt stress and to assess the level of stress amelioration using PGPR on proteostasis of sugar crops in Egypt.
In this work we study the performance of silicon photomultiplier (SiPM) after exposure to the JULIC cyclotron proton beam of energy ∼39MeV, relative to its performance before exposure. The device ...showed a significant change in its behavior. A separation of single photon signals is no longer given for the SiPM under study after exposure to a dose of ∼0.2 Gy (corresponding to an integrated proton flux of ∼ϕp=1.06 × 108 p/cm2).
The ESS SB+ Project Tolba, T; Baussan, E; Dracos, M ...
Journal of physics. Conference series,
01/2024, Letnik:
2687, Številka:
2
Journal Article
Recenzirano
Odprti dostop
Abstract
The European Spallation Source neutrino Super Beam (ESS
SB) is a long-baseline neutrino project that will measure the CP-violation in the leptonic sector at the second, rather than the ...first, oscillation maximum, where the sensitivity of the experiment is ∼3 times higher. The physics simulations have shown that the ESS
SB, after 10 years of data taking, will be able to cover more than 70% of the CP-violating phase,
δ
CP
, parameterrange with 5 σ C.L. to reject the no-CP-violation hypothesis. The expected measurement error of
δ
CP
is smaller than 8° for all
δ
CP
values, making it the most precise proposed experiment in the field by a large margin. The extension project, ESS
SB+ to be performed between 2023 and 2026, aims in measuring the neutrino-nucleus cross-section (the dominant term of the systematic uncertainty) in the energy range of 0.2 – 0.6 GeV, using a Low Energy nuSTORM (LEnuSTORM) and a Low Energy Monitored Neutrino Beam (LEMNB) facilities.
We present that the next-generation Enriched Xenon Observatory (nEXO) is a proposed experiment to search for neutrinoless double- β (0νββ) decay in 136Xe with a target half-life sensitivity of ...approximately 1028 yr using 5 × 103 kg of isotopically enriched liquid-xenon in a time projection chamber. This improvement of two orders of magnitude in sensitivity over current limits is obtained by a significant increase of the 136Xe mass, the monolithic and homogeneous configuration of the active medium, and the multiparameter measurements of the interactions enabled by the time projection chamber. Finally, the detector concept and anticipated performance are presented based upon demonstrated realizable background rates.
Many extensions of the standard model of particle physics suggest that neutrinos should be Majorana-type fermions-that is, that neutrinos are their own anti-particles-but this assumption is difficult ...to confirm. Observation of neutrinoless double-β decay (0νββ), a spontaneous transition that may occur in several candidate nuclei, would verify the Majorana nature of the neutrino and constrain the absolute scale of the neutrino mass spectrum. Recent searches carried out with (76)Ge (the GERDA experiment) and (136)Xe (the KamLAND-Zen and EXO (Enriched Xenon Observatory)-200 experiments) have established the lifetime of this decay to be longer than 10(25) years, corresponding to a limit on the neutrino mass of 0.2-0.4 electronvolts. Here we report new results from EXO-200 based on a large (136)Xe exposure that represents an almost fourfold increase from our earlier published data sets. We have improved the detector resolution and revised the data analysis. The half-life sensitivity we obtain is 1.9 × 10(25) years, an improvement by a factor of 2.7 on previous EXO-200 results. We find no statistically significant evidence for 0νββ decay and set a half-life limit of 1.1 × 10(25) years at the 90 per cent confidence level. The high sensitivity holds promise for further running of the EXO-200 detector and future 0νββ decay searches with an improved Xe-based experiment, nEXO.
Updated physics performance of the ESSnuSB experiment Alekou, A.; Baussan, E.; Blaskovic Kraljevic, N. ...
The European physical journal. C, Particles and fields,
12/2021, Letnik:
81, Številka:
12
Journal Article
Recenzirano
Odprti dostop
In this paper, we present the physics performance of the ESSnuSB experiment in the standard three flavor scenario using the updated neutrino flux calculated specifically for the ESSnuSB configuration ...and updated migration matrices for the far detector. Taking conservative systematic uncertainties corresponding to a normalization error of
5
%
for signal and
10
%
for background, we find that there is
10
σ
(
13
σ
)
CP violation discovery sensitivity for the baseline option of 540 km (360 km) at
δ
CP
=
±
90
∘
. The corresponding fraction of
δ
CP
for which CP violation can be discovered at more than
5
σ
is
70
%
. Regarding CP precision measurements, the
1
σ
error associated with
δ
CP
=
0
∘
is around
5
∘
and with
δ
CP
=
-
90
∘
is around
14
∘
(
7
∘
)
for the baseline option of 540 km (360 km). For hierarchy sensitivity, one can have
3
σ
sensitivity for 540 km baseline except
δ
CP
=
±
90
∘
and
5
σ
sensitivity for 360 km baseline for all values of
δ
CP
. The octant of
θ
23
can be determined at
3
σ
for the values of:
θ
23
>
51
∘
(
θ
23
<
42
∘
and
θ
23
>
49
∘
) for baseline of 540 km (360 km). Regarding measurement precision of the atmospheric mixing parameters, the allowed values at
3
σ
are:
40
∘
<
θ
23
<
52
∘
(
42
∘
<
θ
23
<
51
.
5
∘
) and
2.485
×
10
-
3
eV
2
<
Δ
m
31
2
<
2.545
×
10
-
3
eV
2
(
2.49
×
10
-
3
eV
2
<
Δ
m
31
2
<
2.54
×
10
-
3
eV
2
) for the baseline of 540 km (360 km).
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