An intense laser pulse focused onto a plasma can excite nonlinear plasma waves.Under appropriate conditions,electrons from the background plasma are trapped in the plasma wave and accelerated to ultra-relativistic vel...An intense laser pulse focused onto a plasma can excite nonlinear plasma waves.Under appropriate conditions,electrons from the background plasma are trapped in the plasma wave and accelerated to ultra-relativistic velocities.This scheme is called a laser wakefield accelerator.In this work,we present results from a laser wakefield acceleration experiment using a petawatt-class laser to excite the wakefields as well as nanoparticles to assist the injection of electrons into the accelerating phase of the wakefields.We find that a 10-cm-long,nanoparticle-assisted laser wakefield accelerator can generate 340 pC,10±1.86 GeV electron bunches with a 3.4 GeV rms convolved energy spread and a 0.9 mrad rms divergence.It can also produce bunches with lower energies in the 4–6 GeV range.展开更多
Objective: To evaluate the impact of fractionated CO2 laser therapy on vaginal atrophy and mild/moderate stress urinary incontinence (SUI) symptoms in patients with physiological or surgically-induced menopause. Mater...Objective: To evaluate the impact of fractionated CO2 laser therapy on vaginal atrophy and mild/moderate stress urinary incontinence (SUI) symptoms in patients with physiological or surgically-induced menopause. Materials and Methods: Post-menopausal patients (n = 33) presenting vaginal atrophy and/or SUI, underwent three vaginal CO2 laser treatment sessions, performed at 1-month intervals. Vaginal symptoms were evaluated using the Vaginal Health Index Score (VHI-S), Visual Analogue Scales (VAS) for dyspareunia and global patient satisfaction. The impact of urinary incontinence on patient quality of life was evaluated using the International Consultation on Incontinence Questionnaire (ICIQ). Symptoms were evaluated before treatment and at every subsequent treatment session, as well as 3 months following the last treatment session. RESULTS: The three-session treatment series led to a significant improvement in both subjective symptoms (dryness, burning, dyspareunia) and clinical signs (VHI-S) (P Conclusions: Fractionated CO2 laser therapy is a safe, effective and easy-to-perform treatment modality for menopause-related vaginal atrophy and SUI.展开更多
Premature Ovarian Failure (POF) is a heterogeneous syndrome characterized by Hypergonadotropic Hypogonadism that affects about 1% of women younger than 40 years old, while an incidence of 1/1000 is reported in women y...Premature Ovarian Failure (POF) is a heterogeneous syndrome characterized by Hypergonadotropic Hypogonadism that affects about 1% of women younger than 40 years old, while an incidence of 1/1000 is reported in women younger than 30 years old. [1] This hormonal disorder is caused by the loss of the ovarian response towards the pituitary gonadrotropins synthesis (FSH and LH) that are secreted according to the inhibitory feedback between hypothalamus, pituitary gland and gonads.展开更多
基金supported by the Air Force Office of Scientific Research Grant No.FA9550-17-1-0264supported by the DOE,Office of Science,Fusion Energy Sciences under Contract No.DE-SC0021125+2 种基金supported by the U.S.Department of Energy Grant No.DESC0011617.D.A.Jarozynski,E.Brunetti,B.Ersfeld,and S.Yoffe would like to acknowledge support from the U.K.EPSRC(Grant Nos.EP/J018171/1 and EP/N028694/1)the European Union’s Horizon 2020 research and innovation program under Grant Agreement No.871124 Laserlab-Europe and EuPRAXIA(Grant No.653782)funded by the N8 research partnership and EPSRC(Grant No.EP/T022167/1).
文摘An intense laser pulse focused onto a plasma can excite nonlinear plasma waves.Under appropriate conditions,electrons from the background plasma are trapped in the plasma wave and accelerated to ultra-relativistic velocities.This scheme is called a laser wakefield accelerator.In this work,we present results from a laser wakefield acceleration experiment using a petawatt-class laser to excite the wakefields as well as nanoparticles to assist the injection of electrons into the accelerating phase of the wakefields.We find that a 10-cm-long,nanoparticle-assisted laser wakefield accelerator can generate 340 pC,10±1.86 GeV electron bunches with a 3.4 GeV rms convolved energy spread and a 0.9 mrad rms divergence.It can also produce bunches with lower energies in the 4–6 GeV range.
文摘Objective: To evaluate the impact of fractionated CO2 laser therapy on vaginal atrophy and mild/moderate stress urinary incontinence (SUI) symptoms in patients with physiological or surgically-induced menopause. Materials and Methods: Post-menopausal patients (n = 33) presenting vaginal atrophy and/or SUI, underwent three vaginal CO2 laser treatment sessions, performed at 1-month intervals. Vaginal symptoms were evaluated using the Vaginal Health Index Score (VHI-S), Visual Analogue Scales (VAS) for dyspareunia and global patient satisfaction. The impact of urinary incontinence on patient quality of life was evaluated using the International Consultation on Incontinence Questionnaire (ICIQ). Symptoms were evaluated before treatment and at every subsequent treatment session, as well as 3 months following the last treatment session. RESULTS: The three-session treatment series led to a significant improvement in both subjective symptoms (dryness, burning, dyspareunia) and clinical signs (VHI-S) (P Conclusions: Fractionated CO2 laser therapy is a safe, effective and easy-to-perform treatment modality for menopause-related vaginal atrophy and SUI.
文摘Premature Ovarian Failure (POF) is a heterogeneous syndrome characterized by Hypergonadotropic Hypogonadism that affects about 1% of women younger than 40 years old, while an incidence of 1/1000 is reported in women younger than 30 years old. [1] This hormonal disorder is caused by the loss of the ovarian response towards the pituitary gonadrotropins synthesis (FSH and LH) that are secreted according to the inhibitory feedback between hypothalamus, pituitary gland and gonads.
