A
bstract
We report the first measurement of the exclusive cross sections
e
+
e
−
→
B
B
¯
,
e
+
e
−
→
B
B
¯
∗
, and
e
+
e
−
→
B
∗
B
¯
∗
in the energy range from 10
.
63 GeV to 11
.
02 GeV. The
B
...mesons are fully reconstructed in a large number of hadronic final states and the three channels are identified using a beam-constrained-mass variable. The shapes of the exclusive cross sections show oscillatory behavior with several maxima and minima. The results are obtained using data collected by the Belle experiment at the KEKB asymmetric-energy
e
+
e
−
collider.
Data mining in medicine is a rapidly developing area that is essential for providing a improved knowledge of disease classification , particularly areas related to mental health. This paper's primary ...objective is to provide an overview of the literature-based research projects that have been done on the application of data mining techniques (DMT) in Depression, particularly in depression and anxiety. There was a total of 29 papers retrieved that discussed data mining methods used to diagnose the major mental illness. There are 17 articles that have been identified as significant works on anxiety and depressive disorders. According to the review of the studies that were looked at, using DMT to treat depression can significantly help with diagnosis prediction.
Colorectal cancer is one of the prevalent forms of fatal cancer. The presence of tumors inside the colon is identified through colonoscopy which helps to determine whether the polyp is benign or ...malignant. Prediction of the polyp histology during colonoscopy itself will help to reduce the number of unnecessary biopsies due to false diagnosis. Hence, accurate classification of the polyp is critical for effective treatment and improved patient outcomes. Over the years, lots of work has been done to improve the performance of colorectal cancer classification systems using computer aided diagnosis. This paper presents the various approaches used for colorectal cancer classification while also addressing the existing limitations associated with different methodologies. Although substantial progress has been made in this field in the past few years, several important obstacles must still be overcome to achieve an accurate and reliable classification of polyps. This article will also help academicians and practitioners in this field to familiarize with state-of-the-art techniques.
Smartphones are now able to use for various purposes such as online banking, social networking, web browsing, ubiquitous services, MMS, and more daily essential needs through various apps. However, ...these apps are highly vulnerable to various types of malware attacks attributed to their open nature and high popularity in the market. The fault lies in the underneath permission model of Android apps. These apps need several sensitive permissions during their installation and runtime, which enables possible security breaches by malware. Hence, there is a requirement to develop a malware detection that can provide an effective solution to defense the mobile user from any malicious threat. In this paper, we proposed a framework which works on the principals of feature selection methods and Deep Neural Network (DNN) as a classifier. In this study, we empirically evaluate 1,20,000 Android apps and applied five different feature selection techniques. Out of which by using a set of features formed by Principal component analysis (PCA)can able to detect 94% Android malware from real-world apps.
A statistical analysis is presented to investigate the influence of temperature, rotation, viscosity and thermal relaxation time on the propagation characteristics of different waves in an elastic ...medium. The solution of complex secular equation governing the characteristics of the bulk waves in an infinite homogenous isotropic, Kelvin-Voigt type generalized viscothermoelastic rotating media is carried out by employing both direct and perturbation methods. The analytical developments are supported with numerical illustrations for copper material in respect of phase velocities, attenuation coefficients and specific loss factor of various possible waves. The computer simulated results have been presented graphically with respect to Kibel number. In order to explore and analyze the effects of viscosity and temperature on the elastic waves, the Karl-Pearson correlation coefficient has been used. The student t-test is used to judge and decide the suitability of Cardano’s method vis-à-vis perturbation one for computing different characteristics. The present study may be useful in geophysics and gyroscopic sensor applications and industry.
Curcuminoids are the main compounds in the rhizome extract of C. xanthorrhiza which are beneficial for health. The aim of the research was to study the formulation of curcuminoid nanoemulsions and ...their biological effects as antioxidant, antibacterial, and antifungal agents. The formulation of the curcuminoid nanoemulsion was carried out using the spontaneous emulsion method, by mixing the curcuminoid extract with oil and tween 80 and adding phosphate buffer pH 7.0. Curcuminoid nanoemulsion products were characterized and tested for their potential biological activity. Antioxidant test using reagent 2,2-diphenyl-1-picrylhydrazyl. Antibacterial test using diffusion method against Escherichia coli and Staphylococcus epidermidis bacteria. Antifungal test using Candida albicans. The curcuminoid nanoemulsion product showed a particle size of 19.5 to 32.1 nm, a polydispersity index < 0.3, and a zeta potential of -4.5 to -9.2 mV. Curcuminoid nanoemulsions have high antioxidant and antifungal activity, while antibacterial activity showed moderate activity. The conclusion is that curcuminoid nanoemulsions from C. xanthorrhiza extract can be used effectively as antioxidants and antimicrobial for commercial applications.
Study of γγ→γψ(2S) at Belle Wang, X. L.; Aihara, H.; Asner, D. M. ...
Physical review. D,
06/2022, Letnik:
105, Številka:
11
Journal Article
Recenzirano
Odprti dostop
Using 980 fb-1 of data at and around the Υ(nS)(n = 1, 2, 3, 4, 5) resonances collected with the Belle detector at the KEKB asymmetric-energy e+e- collider, the two-photon process γγ → γψ(2S) is ...studied from the threshold to 4.2 GeV for the first time. Two structures are seen in the invariant mass distribution of γψ(2S): one at MR1 = 3922.4 ± 6.5 ± 2.0 MeV/c2 with a width of ΓR1 = 22 ± 17 ± 4 MeV, and another at MR2 = 4014.3 ± 4.0 ± 1.5 MeV/c2 with a width of ΓR2 = 4 ± 11 ± 6 MeV; the signals are parametrized with the incoherent sum of two Breit- Wigner functions. The first structure is consistent with the X(3915) or the χc2(3930), and the local statistical significance is determined to be 3.1σ with the systematic uncertainties included. The second matches none of the known charmonium or charmonium like states, and its global significance is determined to be 2.8σ including the look-elsewhere effect. The production rates are Γγγ B(R1 → γψ(2S)) = 9.8 ± 3.6 ± 1.2 eV assuming (JPC, |λ|) = (0++, 0) or 2.0 ± 0.7 ± 0.2 eV with (2++, 2) for the first structure and Γγγ B(R2 → γψ(2S)) = 6.2 ± 2.2 ± 0.8 eV with (0++, 0) or 1.2 ± 0.4 ± 0.2 eV with (2++, 2) for the second one. Furthermore, the first errors are statistical and the second systematic, and λ is the helicity.
We report results from a study of the spin and parity of Ξ c ( 2970 ) + using a 980 fb −1 data sample collected by the Belle detector at the KEKB asymmetric-energy e+e− collider. The decay angle ...distributions in the chain Ξc (2970)+→ Ξc (2645) 0π+ → Ξ+c π− π+ are analyzed to determine the spin of this charmed-strange baryon. The angular distributions strongly favor the Ξc (2970)+ spin J = 1/2 over 3/2 or 5/2, under an assumption that the lowest partial wave dominates in the decay. We also measure the ratio of Ξc (2970)+ decay branching fractions R = B Ξc (2970)+ → Ξc (2645)0π+/B Ξc (2970)+ → Ξ0c π+ = 1.67 ± 0.29 (stat)+0.15 −0.09 (syst) ± 0.25 (IS), where the last uncertainty is due to possible isospin-symmetry-breaking effects. This R value favors the spin-parity J P = 1/2+ with the spin of the light-quark degrees of freedom sl = 0. This is the first determination of the spin and parity of a charmed-strange baryon.
We report measurements of the branching fractions of singly Cabibbo-suppressed decays Λc+ → pη and Λc+ → pπ0 using the full Belle data sample corresponding to an integrated luminosity of 980.6 ...fb−1. The data were collected by the Belle detector at the KEKB e+ e− asymmetric energy collider. A clear Λ + c signal is seen in the invariant mass distribution of p η . The fitted number of signal events of the Λc+ → pη process is 7734 ± 263 ; from this, we measure the ratio of branching fractions B ( Λc+→ pη ) / B ( Λc+ → pK− π+ ) = 2.258 ± 0. 077 ( stat ) ± 0.122 ( syst ) × 10 − 2 , from which we infer the branching fraction B ( Λc+ → pη ) = 1.42 ± 0.05 ( stat ) ± 0.11 ( syst ) × 10−3. In addition, no significant signal for Λc+ → pπ0 is found, so an upper limit on the branching fraction of B ( Λc+ → pπ0) < 8.0 × 10−5 at a 90% credibility level is set, more than 3 times better than the best current upper limit.
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