新型载人离心机在军事航空医学中的应用

Objective To investigate the approaches and the application effects of acceleration tolerance screening and training for fighter pilots,-Gx experience,dynamic flight simulation (DFS) experience and physiological evaluation of anti-G equipment on new human centrifuge. Methods ①Twenty-four pilots underwent the relaxed+Gz tolerance examination on a single degree of freedom centrifuge (Model 63) and on new human centrifuge for comparison.②One hundred high performance fighter pilots carried out centrifuge training.Among them,42 pilots were in passive control mode while the other 58 pilots were trained by close-loop mode.③Eight pilots experienced -1.5 Gx and-2.0 Gx on the new centrifuge.④Eighteen pilots performed aerobatic maneuvers,such as left spiral,right spiraI,split S loop,immelmann,and barrel roll in DFS awareness.⑤Six volunteers and 9 pilots served as subjects.The tests of anti-G capability evaluation for suits,suits combined with pressure breathing for G (PBG),and suits combined with PBG and anti-G strainingmaneuver (AGSM) were conducted respectively. Results ①The mean relaxed+Gz tolerance of pilots obtained on the new and old centrifuge was (4.25±0.34) G and (4.41±0.14) G respectively (t=3.03,P<0.01).The difference would be relative to fatigue that caused by continuous running and pilots' endurance to the reduplicate riding.So the current+Gz tolerance screening method was applicable on the new centrifuge regardless of the influence of the above mentioned factors.②In the training under passive control mode,25 of 42 pilots completed the training of 7 G for 10 s,9 pilots for 8 G for 10 s and 2 for 9 G for 10 s.In the close-loop control training,48 pilots passed training of 7 G for 10 s,19 pilots for 8 G for 10 s,and 23 for 9 G for 10 s.③During-Gx experience,the feelings of dizzy and disgust were evident during the roll and pitch movements.④Pilots reported that DFS training was similar to actual flight and possessed great practical value in improving aerial combat ability.⑤The performance of anti-G equipments reached the functional requirement. Conclusions New human centrifuge can be applied in acceleration tolerance screening and training for high performance fighter aircraft pilots,-Gx experience,DFS training,and physiological evaluation for anti-G equipments.Relevant approaches have been established,and the application of new human centrifuge has acquired a satisfactory result.which lays the foundation for further work.     

“GFAAS”测定矿泉水中钼

“ＧＦＡＡＳ”测定矿泉水中钼江苏省卫生防疫站胡文鹰，张立辉钼是动植物必须的营养成份，也是人体必须的微量元素之一。天然水中可含有微量的钼，它主要以钼酸根的形式存在。水中钼的测定常用比色法，本文介绍用石墨炉原子吸收法测定天然水中钼。该法简便快速灵敏。线性...     

骨肉瘤患者术后幻肢痛的止痛问题

骨肉瘤患者术后幻肢痛产生原因有很多方面,其中由于大脑皮层内存在一个惰性兴奋灶而引起的幻肢痛,多有明显的心理因素。本文对属于心理治疗范畴的四种止痛方法进行了探讨。     

溴酚蓝－氯化十六烷基吡啶光度法测定水中阴离子表面活性剂的改进

溴酚蓝－氯化十六烷基吡啶光度法测定水中阴离子表面活性剂的改进江苏省卫生防疫站张立辉胡文鹰阴离子合成洗涤剂是我国《生活饮用水水质标准》中的必测项目，它是反映水体是否受到污染的一个指标，测定的主要成分是阴离子表面活性剂－烷基苯磺酸钠（ＡＢＳ）。目前国家标...     

32例胆道手术并存冠心病的术前术后处理体会

胆道疾病与冠心病关系密切,冠心病病人进行胆道手术时,其手术危险性及术后并发症发生率明显高于非心脏病的病人,但只要经过认真妥善的术前术后处理,冠心病病人自能顺利渡过围手术期,取得较好的治疗效果。亚临床资料及方法1．1一般资料自1995年1月至1997年5月,共进行并存冠心病的胆道手术32例。其中男12例,女20例,年龄32岁-74岁,24例年龄在50岁以上。急诊手术3例,择期手术29例。32例中胆囊炎10例,胆石症17例,胆囊息肉5例。5例并发梗阻性黄垣。32例均行胆囊切除术,其中7例同时行胆总管引流术。32例心功能分级：互级10例,刀级18…     

山东省某农村地区脑卒中高危人群干预2年后效果评估

目的：了解山东省临朐县某农村社区脑卒中高危人群干预2年后的效果，为下一步的规范化管理提供科学依据。方法：选取临朐县某农村社区2019年筛查出的脑卒中高危人群377例，对其进行个体化健康教育，每半年随访一次，调查干预2年后脑卒中高危人群相关危险因素变化情况。结果：2021年随访时，死亡69例、失访71例，共随访到237例，随访率为62.86%。吸烟、高血压、血脂异常、颈动脉斑块的发生率分别由2019年的35.81%、84.35%、68.44%、34.22%下降至2021年的27.43%、80.59%、50.63%、21.10%；缺乏锻炼和超重/肥胖者占比分别由2019年的1.33%和45.48%升高至2021年的8.44%和56.54%；干预后显著改善的血清指标为总胆固醇、低密度脂蛋白胆固醇和高密度脂蛋白胆固醇。结论：个体化健康教育为主的综合干预是行之有效的脑卒中高危人群健康管理方法，今后应将干预重点放在控制体重、增强体育锻炼、降低甘油三酯和血糖水平方面。