Focusing on recent measurement of $B^+ \to D_s^+D_s^-K^+$ process given by the LHCb Collaboration, we propose that this newly observed near $D_s^+D_s^-$ threshold enhancement can be due to contribution $\chi_{c0}(2P)$, which is a $P$-wave charmonium below threshold. By performing combined fit measured $D_s^+D_s^-$, $D_s^+K^+$, and $D_s^-K^+$ invariant mass spectra, introducing $\chi_{c0}(2P)$ w...

This paper focused on determining the increased tendency of cracking after die forging process high nickel and chromium steel. The increase in carbon content austenitic nickel–chromium steel promoted valve forgings to intergranular crack head. Attention was paid issues related chemical composition material be considered when hot forming components. Optical scanning electron microscopies were us...

Objective: The Rifampicin resistance and susceptibility of Mycobacterium tuberculosis are caused by mutations in the 81-base pair region of the rpoB gene encoding the b-subunit of RNA polymerase. Methods: Isoniazid resistance of M. tuberculosis is related to mutations in inha , oxyR and ahpC genes which 30 to 90 percent of Isoniazid resistance is occurred in 3015 codons of kat...

Objective: The Rifampicin resistance and susceptibility of Mycobacterium tuberculosis are caused by mutations in the 81-base pair region of the rpoB gene encoding the b-subunit of RNA polymerase. Methods: Isoniazid resistance of M. tuberculosis is related to mutations in inha , oxyR and ahpC genes which 30 to 90 percent of Isoniazid resistance is occurred in 3015 codons of kat...

This document defines the protocol used between elements of a physically decomposed multimedia gateway, i.e., a Media Gateway and a Media Gateway Controller. The protocol presented in this document meets the requirements for a media gateway control protocol as presented in RFC 2805. This document replaces RFC 3015. It is the result of continued cooperation between the IETF Megaco Working Group ...

Objectives To analyse the data on skydiving deaths and injuries collected prospectively by French Parachuting Federation (FFP) between 2010 2019. Design Prospective cohort study. Methods Data number of were January December 2019, among all skydivers licensed to FFP, via a standardised report form that included skydiver’s sex level experience (classified as tandem, student, or experienced), deat...

Abstract The study constitutes an analysis of the durability dies used in first operation producing valve forgings from chromium–nickel steel (NCF 3015) for motor trucks. average (subjected to standard thermal treatment and nitriding) this equals about 800 forgings. To perform in-depth effect nitrided layer thickness (0.1 mm 0.2 mm) tool material (W360 QRO90) on possibilities increasing die dur...