The paper presents technologies of reducing the technological environmental impact BOTTES of man-made space launch vehicles (SLV) based on controlled descent and trajectories of deorbiting the spent stages, burning of the separated nose fairing halves and tail section in the atmosphere.Controlled descent of a spent stage is accomplished due to the
This work presents the design of a compact dual-port circularly polarized antenna based on the new coupler topology.The antenna can radiate a right-hand circular polarization (RHCP) in two opposite directions Training depending on the input port.In the proposed structure, the radiating system has three inverted F antennas connected to a 120°
The outer and inner structure of wild apple (Malus silvestris Mill.), common pear (Pyrus communis L.) Training and Chaenomeles japonica (Thunb.) Lindl.seeds was investigated.It was found that the outer structure exhibits good diagnostic features expressed in the first place in the relief of the seed coat and further in Jewelry the arrangement and a
A spontaneous tracheal rupture is rare and life-threatening.We postulate that long-term steroid administration is an under-reported risk factor.We present a case of an impending Bucket/Wringers Combos spontaneous tracheal rupture in a 51-year-old female with a significant medical history of systemic lupus erythematosus and interstitial lung disease
Experimental observation on a model of free over flow spillway is used in this study.Three configurations of baffle placement are used in the experiment.The energy along the flow over the spillway were calculated based on measured flow depth and discharge during Hema-Plex the experiment.Variations of flow depth and discharge were determined based o