Global navigation satellite systems (GNSS) are the most widely used positioning, navigation, and timing (PNT) technology. However, a GNSS cannot provide effective PNT services in physical blocks, such as in a natural canyon, canyon city, underground, underwater, and indoors. With the development of micro-electromechanical system (MEMS) technology, the chip scale atomic clock (CSAC) gradually ma...

Transverse resistive wall instability is analysed for antiprotons in the Recycler Ring. Damper requirements are formulated. 1 Growth Rate and Landau Damping 1.1 Coasting Beam Coherent instabilities are driven by the real part of impedance. For a coasting beam with insigni…cant frequency spread, the impedance-driven coherent tune shift at the harmonic number n is given by (see e. g. [1]) Z !Z=!0...

ovarian hyperstimulation syndrome (ohss) is a unique iatrogenic complication of controlled ovarian stimulation (coh)/in vitro fertilization (ivf) in reproductive endocrinology occurring during the luteal phase or early pregnancy. it can have a serious impact on the patient�s health. with the expansion of the assisted reproductive techniques (art) from 1978, the incidence of ohss is increasing w...

BACKGROUND The aim of this study was to assess the effect of withholding gonadotrophins (coasting) during controlled ovarian stimulation (COS) on individual follicle concentrations of follicular fluid vascular endothelial growth factor (VEGF) in women at high risk of developing ovarian hyperstimulation syndrome (OHSS). METHODS Twenty-two women who had been coasted and 26 optimally responding ...

Theminimum-¢V, Ž xed-time, two-impulse rendezvousbetween two spacecraft orbitingalong two coplanarunidirectional circular orbits (moving-target rendezvous) is studied. To reach this goal, the minimum-¢V, Ž xed-time, two-impulse transfer problem between two Ž xed points on two circular orbits is Ž rst solved. This Ž xed-endpoint transfer is related to the moving-target rendezvous problemby a sim...

OBJECTIVE To summarize current views on the pathophysiology, risk factors, prevention, clinical features, and management of Ovarian Hyperstimulation Syndrome (OHSS). DESIGN Literature review RESULTS OHSS is a condition characterized by increased capillary permeability, and experimental evidence has identified a provocative link to pathologic vasoactive cytokine actions. Although the ultimat...

Ovarian stimulation with exogenous FSH followed by FSH withdrawal or 'coasting' is an effective means of increasing the number of oocytes obtainable for the in vitro production of cattle embryos. However, the quality of the oocytes thus obtained varies considerably from one cow to the next. The aim of the present study was to gain a better understanding of the follicular conditions associated w...

Copepod nauplii move in a world dominated by viscosity. Their swimming-by-jumping propulsion mode, with alternating power and recovery strokes of three pairs of cephalic appendages, is fundamentally different from the way other microplankters move. Protozoans move using cilia or flagella, and copepodites are equipped with highly specialized swimming legs. In some species the nauplius may also p...