FLYING SAUCER EXPERIMENTAL RESEARCH, AERODINAMICS UNEXPLORED PHENOMENON AND BIRD'S FLIGHT

As a result of experiments with the motion of asymmetrical vibrating bodies in a viscous medium, it was found that the generally accepted idea of such a principle of motion is not correct. In reality, the movement is in the opposite direction. A description of the experiments and the observed effect is given, as well as its interpretation.

CFD Analysis on Aerodynamic Coefficients of Flying Saucer

With the growing of Unmanned Aerial Vehicle (UAV) usage, many new types of UAV are introduced. Flying Saucer is a new type of UAV which is not yet famous in the market. The aim of this study is to analysis the aerodynamic coefficients of a Flying Saucer. The research question arise is What the optimum angle of attack for Flying Saucer flight is. The study is conducted in Computational Fluid Dynamics (CFD) using COMSOL Multiphysics with Laminar Flow physics for several angles of attack. The analysis considers Lift and Drag coefficient in the form of 𝐶𝐿 and 𝐶𝐷 to angle of attack (α) plot, ratio of 𝐶𝐿/𝐶𝐷 to angle of attack (α) plot and drag polar plot. We conclude that a symmetric Flying Sauce has aerodynamic characteristic with the optimum operational angle of attack in the range of 8 to 16 deg. The 𝐶𝐷 and 𝐶𝐿 has a quadratic relationship with large 𝐶𝐷0 due to the geometric of Flying Saucer. It recommends that further study should explore in the area of zero and maximum angle of attack (α) and validation in wind tunnel experiment.

Effect of Shengmaisan on expression of blood and blood biochemical index and heat shock protein 72 in flying-saucer-shooter trained under high temperature

目的 研究加味生脉散对飞碟运动员高温训练前后外周血中热休克蛋白72（HSP72）的表达和血液生化的影响，为防热疾病药物增强飞碟运动员热耐力、预防热疾病提供实验依据。方法 选取浙江省飞碟运动员24人，采用随机数字表方法分为对照组、中药组两组，每组12人。其中，未饮用加味生脉散者为对照组，饮用加味生脉散者为中药组。在夏训期间，进行高温训练任务2周，中药组飞碟运动员每日上、下午训练前饮用加味生脉散，实验前及2周后分别抽取每组外周静脉血，分别进行淋巴细胞HSP72含量、血液常规及生化指标测定。结果 实验前，经测定，对照组、中药组的血液常规、生化检测值、HSP72表达均无异常，经比较，无显著差异（P> 0.05）。高温训练结束后，中药组的HSP72表达显著高于训练前及对照组（P< 0.05），白细胞计数实验前后存在显著差异（P< 0.05）。结论 服用加味生脉散能显著提高飞碟运动员受热刺激后HSP72表达的上调，达到增强热耐受性、预防热疾病的作用。

The observation of blood biochemistry and HSP72 expression changing rules in peripheral blood of flying-saucer-athletes under high temperature training

Objective: To study the effect of training under high temperature on blood and heat shock protein 72(HSP72)expression of flying saucer athletes. Methods: The numbers of training group and control group are 30. Twenty-four flying saucer athletes in Zhejiang province were selected and randomly divided into training group and control group, 15 in each group. Peripheral venous blood of each group was taken before and after the experiment. The HSP72 content of lymphocyte, blood routine and biochemical indexes were measured respectively. Results: There was significant difference in white blood cell in training group count before and after the experiment（P< 0.05）. The expression of HSP72 and the white blood cell in training group was higher than that control group（P< 0.05）. Conclusions: Organism could be affected and turned to stress state due to training under high temperature. It is necessary to provide the safeguard for the flying saucer athletes under high temperature in order to prevent the damage.

Autoimmune retinopathy: findings and limitations from optical coherence tomography angiography

Background and objective To report novel findings and limitations from optical coherence tomography angiography (OCTA) in the evaluation of autoimmune retinopathy (AIR). Study design We retrospectively reviewed features of five patients diagnosed with AIR and five controls. OCTA scans were obtained and manually segmented to provide accurate measurements of foveal avascular zone (FAZ), vessel density, and retinal thickness at different levels. Results The total retina and superficial vessel density throughout the whole scan were similar between AIR and controls (p = 0.14 and p = 0.11), whereas deep vessel density was decreased in AIR compared controls (p = 0.02). Decreased vessel density was most pronounced in the parafoveal and perifoveal areas (p = 0.01 and p = 0.01). AIR patients also had reduction of total retinal thickness in the perifoveal zone (p = 0.03), corresponding to outer retinal thinning (p = 0.001). Conclusion This small series shows that AIR patients have reduced deep vessel density, particularly in the parafoveal and perifoveal regions and a decrease in macular thickness. These findings show correlation with the classic “flying saucer” sign seen on OCT.

Methoxsalen-induced advanced bull’s eye maculopathy

A number of systemic medications are known to cause macular toxicity, and bull’s eye maculopathy is caused by some of them like hydroxychloroquine and clofazimine. A 55-year-old female, known case of vitiligo with history of undergoing methoxsalen–ultraviolet A therapy, presented with painless defective vision in both eyes. Fundus examination and autofluorescence showed macular degeneration with bull’s eye configuration. Optical coherence tomography showed perifoveal loss of photoreceptors and outer retinal thinning with foveal sparing appearing as ‘flying saucer’. Multifocal electroretinogram showed pan-macular suppression of waveforms. Patient was diagnosed as case of methoxsalen-induced advanced macular toxicity. This is the first reported case of methoxsalen-induced advanced bull’s eye maculopathy.