દસ્તુરલ અમલ સરકાર જૂનાગઢ (જૂનાગઢ રાજ્ય ગેઝેટ) એક ઐતિહાસિક અધ્યયન' (ઇ.સ. ૧૮૬૭ - ૧૯૪૯)

Not availabl

Steady Flow of Purely Viscous Shear-Thinning Fluids in a 1:3 Planar Gradual Expansion

Laminar flow of non-Newtonian fluid (shear-thinning) through a 1:3 planar gradual expansion is numerically investigated, for various Power-Law index (0.6, 0.8 and 1.0) and expansion angles (15, 30, 45, 60 and 90°) at different generalized Reynolds number (1 ≤ Reg ≤ 400). The study of these parameters effect on the flow pattern allowed the determination of the two critical generalized Reynolds numbers (Regcr1 and Regcr2), which correspond to the transition from the symmetric to the asymmetric flow and the appearance of the third recirculation zone respectively. The results showed that decreasing the Power-Law index or the expansion angle stabilizes the flow by increasing significantly the two critical generalized Reynolds numbers. In order to predict the two critical generalized Reynolds numbers, two correlations have been proposed

An Improved SEL Test of the ADV212 Video Codec

Single-event effect (SEE) test data is presented on the Analog Devices ADV212. Focus is given to the test setup used to improve data quality and validate single-event latchup (SEL) protection circuitry

Bone marrow fat accumulation accelerated by high fat diet is suppressed by exercise

Marrow adipose tissue (MAT), associated with skeletal fragility and hematologic insufficiency, remains poorly understood and difficult to quantify. We tested the response of MAT to high fat diet (HFD) and exercise using a novel volumetric analysis, and compared it to measures of bone quantity. We hypothesized that HFD would increase MAT and diminish bone quantity, while exercise would slow MAT acquisition and promote bone formation. Eight week-old female C57BL/6 mice were fed a regular (RD) or HFD, and exercise groups were provided voluntary access to running wheels (RD-E, HFD-E). Femoral MAT was assessed by μCT (lipid binder osmium) using a semi-automated approach employing rigid co-alignment, regional bone masks and was normalized for total femoral volume (TV) of the bone compartment. MAT was 2.6-fold higher in HFD relative to RD mice. Exercise suppressed MAT in RD-E mice by more than half compared with RD. Running similarly inhibited MAT acquisition in HFD mice. Exercise significantly increased bone quantity in both diet groups. Thus, HFD caused significant accumulation of MAT; importantly running exercise limited MAT acquisition while promoting bone formation during both diets. That MAT is exquisitely responsive to diet and exercise, and its regulation by exercise appears to be inversely proportional to effects on exercise induced bone formation, is relevant for an aging and sedentary population

Вплив заміщення Mn2+ на оптичні властивості нових наночастинок CaLi2O2, синтезованих методом золь-гелю

Нова наночастинка на основі композитного оксиду кальцію і літію CaLi2O2 була успішно синтезована за допомогою методу золь-гелю. Метою роботи є вивчення зміни оптичних властивостей зі зміною концентрації іонів Mn2+ у наночастинках CaLi2O2. Новизною цього дослідження є синтез наночастинок CaLi2O2, легованих Mn. Для вивчення їх фізичних властивостей отримані зразки у вигляді порошку термічно обробляли при 300 °C, а потім характеризували порошковою рентгенівською дифракцією (XRD), УФ та видимою (UV-Vis) спектроскопією та інфрачервоною спектроскопією з перетворенням Фур'є (FT-IR). Рентгенограми показують, що кристалічна структура змінювалася зі зміною концентрації іонів Mn2+ в решітці CaLi2O2. Включення атомів марганцю в CaLi2O2 підтверджено FT-IR. Це можна пояснити появою деяких смуг поглинання в діапазоні хвильових чисел від 584 до 601 см – 1. Розмір частинок зменшується з 463 Ǻ до 117 Ǻ. Значення ширини забороненої зони змінювалося від 3,769 до 3,794 еВ, що було пов'язано з ефектом квантового обмеження.A novel calcium lithium composite oxide CaLi2O2 nanoparticle has been successfully synthesized by using sol-gel method. The objective of the present work is to examine the change of optical properties with the change of Mn2+ ion concentration in CaLi2O2 nanoparticles. The novelty of this study is the synthesis of Mn-doped CaLi2O2 nanoparticles. In order to investigate their physical properties the resulting samples in powder form were thermally treated at 300 °C and then characterized by powder X-ray diffraction (XRD), UV-Visible (UV-Vis) spectroscopy and Fourier Transform Infrared spectroscopy (FT-IR). The XRD patterns show that the crystalline structure has been changed with the change of Mn2+ ion concentration in CaLi2O2 lattice. The incorporation of manganese atoms into CaLi2O2 has been confirmed by the FT-IR spectroscopy. This may be explained by the apparition of some absorption bands in the wavenumber range from 584 to 601 cm – 1. The particles size decreases from 463 Ǻ to 117 Ǻ. The band gap values were tuned from 3.769 eV to 3.794 eV and discussed based on the quantum confinement effect