High-frequency wavelength modulation spectroscopy (WMS) has been applied to the detection of the hydroperoxyl radical (HO2 ) in a laser photolysis and long-path absorption pump-probe kinetics reactor with a near-infrared distributed feedback diode laser. The HO2 is formed by the 355-nm photolysis of Cl2 in the presence of CH3 OH and O2 and monitored by a phase-sensitive detection of the second-...

There is well-established evidence in many mammalian species for effects of the intrauterine position (IUP) (the sex-specific positioning of the embryo) on postnatal brain function and behavior. We found that the IUP affects estrogen receptor (ER)α expression in adult female rats in the ventrolateral region of the hypothalamic ventromedial nucleus (vlVMH), which is associated with sexual behavi...

We report in this paper energy positions of the 2D0_2s22p2(1D)nd(2F); 2D0_2s22p2(1D)nd(2D); 2D0_2s22p2(1D)nd(2P); 2D0_2s22p2(1D)ns(2D); 2D0_2s22p3(3D)np(2P); 2D0_2s22p3(3D0)np(2F), and 4S0_2s22p3(5S0)np(4P) Rydberg series photoionization spectra originating from 2D0 4S0 metastable states O+ ion. Calculations are performed up to n = 20 using Modified Orbital Atomic Theory (MAOT) [1]. The present...

We report on time-resolved linear and nonlinear terahertz spectroscopy of the two-band superconductor MgB$_2$ with superconducting transition temperature $T_c \approx 36$ K. Third-harmonic generation (THG) is observed below $T_c$ by driving system intense narrowband THz pulses. For pump-pulse frequencies $f=$ 0.3, 0.4, 0.5 THz, temperature-dependent evolution THG signals exhibits a resonance ma...

به منظور تولید رادیوایزوتوپ تکنسیم-۹۹ حاصل از واپاشی رادیواکتیو مولیبدن-۹۹ و خالص‌­سازی محصول فرایند انحلال اسیدی هدف مینیاتوری، لازم است آلودگی ید گازی در حد قابل قبولی کاهش یابد. این جاذب‌های جامد استفاده می‌شود. یکی بهترین مورد موردنیت حاوی نقره تشکیل شده است. پژوهش روش سنتز مشخصات جاذب بررسی قرار گرفته برای تهیه بلورهای حفره‌دار با اندازه حدود ۱۰ میکرومتر نسبت آلومینیم سیلیکون برابر 2/5 شد ...