Localized plasmons in bilayer graphene nanodisks

We study localized plasmonic excitations in bilayer graphene (BLG) nanodisks, comparing AA-stacked and AB-stacked BLG and contrasting the results to the case of two monolayers without electronic hybridization. The electrodynamic response of the BLG electron gas is described in terms of a spatially homogeneous surface conductivity, and an efficient alternative two-dimensional electrostatic approach is employed to carry out all the numerical calculations of plasmon resonances. Due to a unique electronic band structures, the resonance frequency of the traditional dipolar plasmonic mode in the AA-stacked BLG nanodisk is roughly doping independent in the low-doping regime, while the mode is highly damped as the Fermi level approaches the interlayer hopping energy $\gamma$ associated with tunneling of electrons between the two layers. In addition to the traditional dipolar mode, we find that the AB-stacked BLG nanodisk also hosts a new plasmonic mode with energy larger than $\gamma$. This mode can be tuned by either the doping level or structural size, and furthermore, this mode can dominate the plasmonic response for realistic structural conditions

Effect of Doxorubicin Combined with Ipratropium Bromide on Pulmonary Function Indexes in the Treatment of Chronic Obstructive Pulmonary Disease

Objective: To observe the effect of different methods in the treatment of chronic obstructive pulmonary (COPD) disease. Methods: 86 COPD patients attending the clinic from 2020.7 to 2022.11 were divided into groups I and II according to the envelope method, 43 cases each were treated with theophylline extended-release tablets and group II was treated with ipratropium bromide, the lung function indexes of each group were tested and the total effective rate was calculated and compared between groups. Results: At the end of the treatment course, FEV1, FVC and FEV1/FVC levels in group II were higher than those in group I, and the difference reached a significant level (P < 0.05). The total effective rate in group I was 74.42%, which was lower than that in group II, which was 95.35%, forming a significant difference (P < 0.05). Conclusion: Treatment with doxorubicin combined with ipratropium bromide for those with COPD is effective and worthy of popular application

An Investigation of the Efficacy of Glycine Theophylline Sodium Extended-Release Tablets in the Treatment of Bronchial Asthma

Objective: To observe the effect of treatment with theophylline extended-release tablets in patients with bronchial asthma. Methods: The medical records of 76 asthma patients admitted from 2020.8 to 2022.9 were extracted. 38 cases in the reference group received conventional basic treatment and 38 cases in the observation group received conventional + sodium theophylline glycinate treatment, and the condition control of the patients in the two groups was compared. Results: The patients in the observation group all disappeared from the disease symptoms earlier than the reference group (P < 0.05). In terms of total effective rate, the difference between the reference group and the observation group was 65.79% vs 92.11% (P < 0.05). Conclusion: Oral treatment with sodium theophylline glycinate is recommended for asthma patients to better control their condition

Analysis of the application of methylprednisolone injection combined with ambroxol injection in the treatment of asthma

Objective: To observe the effectiveness of different medication regimens in the treatment of asthma diseases. Methods: Sixty-four patients with asthma who attended the medical records department from 2020.6 to 2022.8 were analyzed. 32 patients in group A were treated with methylprednisolone alone, while group B was treated with intravenous amiloride injection in addition to the medication regimen in group A. The improvement time of symptoms in each group was observed, the total effective rate was calculated and the differences between groups were analyzed. Results: In Group B, the improvement time of wheeze, cough, croup and wet rales was earlier than that in Group A (P＜0.05). In terms of total effective rate, the difference was 65.63% vs. 93.75% in group A vs. group B (P < 0.05). Conclusion: The combination of methylprednisolone and ambroxol injection in the treatment of asthma can provide more rapid relief of symptoms and improve the efficacy, which is worth promoting