对 Si 含量为10%～13%的 Al-Si 合金进行了加速氧化、热循环和掺 Fe 实验,研究了其在不同热循环条件下的相变储热性能和可靠性．结果表明,在空气中经几百 h 的高温氧化后,氧化率小于0．01%,其影响可以忽略不计．经过0,4,23,60, 100,200,...对 Si 含量为10%～13%的 Al-Si 合金进行了加速氧化、热循环和掺 Fe 实验,研究了其在不同热循环条件下的相变储热性能和可靠性．结果表明,在空气中经几百 h 的高温氧化后,氧化率小于0．01%,其影响可以忽略不计．经过0,4,23,60, 100,200,300,400,500,600,700次熔化-凝固循环后,相变温度的变化为3．8～11．8℃,相变潜热从484．86 kJ/kg下降到432．62 kJ/kg．当 Al-Si 合金的掺铁量为0．5%时,相变潜热下降6．5%；对于缓冷的储能过程,偏析较小并在循环多次后趋于缓和和稳定．Al-Si 合金成份和结构的变化对材料的储热性能影响较小,在长期的热循环过程中有良好和稳定的储热性能．展开更多
In clinical practice,there are many symptoms with unidentified origin,such as dizziness,headache,nausea,vomiting,papitation,short breath,unstable walking,weakness of four limbs,aching pain of limb muscles,burning pain...In clinical practice,there are many symptoms with unidentified origin,such as dizziness,headache,nausea,vomiting,papitation,short breath,unstable walking,weakness of four limbs,aching pain of limb muscles,burning pain,numbness,dysphagia,tinnitus,deafness,cataplexy,amaurosis,diplopia,hallucination,and retrograde amnesia.We can also encounter many diseases of unknown causes. For example,migraine,neurathenia,neurosis,menopausal syndrome,Meniere’s syndrome,cerebral concussion,cervical spondylopathy,learning disability Hyperactivity,Attention deficite,spasmodic jerk in children,minimal brain dysfunction syndrome,high blood pressure,low blood pressure,tachycardia,bradycardia,arrhythmia,premature beat,diabetes mellitus or diabetes insipidus,anorexia,frequent micturition,constipation and fever of unidentified origin are among them. Patients with above symptoms or diseases often for years go to see doctors in different departments such as neurology,neurosurgery,cardiology,endocrinology,orthopedics,otolaryngology,stomatology,gynecology,and pediatrics and their disorders are often difficult to treat. In recent 20 years,we studied the effect of the Chinese traditional manual reposition on the sequelae of brain trauma. During this research we unexpectedly disclosed the mystery of many symptoms and diseases of unknown causes and discovered that the common cause of these problems is \!rotatory axial subluxation (RAS)\",which causes the above symptoms by inducing blood insufficiency of vertibrobasilar arteries. After observation and analysis of thousands of these cases,the mechanisms,diagnosis and treatment of RAS have been systemically studied and well understood.Now it can be easily diagnosed only based on the X-ray film (including the 1 st and 2 nd cervical vertebrae in an anterioposterior mouth-open position). In stead of taking medicines or receiving operations,patients with this disorder can be treated only using manual reposition, a very simple,economical,but magic and effective therapy.This therapy has been accepted and praised by most patients.It is a new method of treatment and is resulted from the combination of Chinese traditional and Western medicine.展开更多
文摘对 Si 含量为10%～13%的 Al-Si 合金进行了加速氧化、热循环和掺 Fe 实验,研究了其在不同热循环条件下的相变储热性能和可靠性．结果表明,在空气中经几百 h 的高温氧化后,氧化率小于0．01%,其影响可以忽略不计．经过0,4,23,60, 100,200,300,400,500,600,700次熔化-凝固循环后,相变温度的变化为3．8～11．8℃,相变潜热从484．86 kJ/kg下降到432．62 kJ/kg．当 Al-Si 合金的掺铁量为0．5%时,相变潜热下降6．5%；对于缓冷的储能过程,偏析较小并在循环多次后趋于缓和和稳定．Al-Si 合金成份和结构的变化对材料的储热性能影响较小,在长期的热循环过程中有良好和稳定的储热性能．
文摘In clinical practice,there are many symptoms with unidentified origin,such as dizziness,headache,nausea,vomiting,papitation,short breath,unstable walking,weakness of four limbs,aching pain of limb muscles,burning pain,numbness,dysphagia,tinnitus,deafness,cataplexy,amaurosis,diplopia,hallucination,and retrograde amnesia.We can also encounter many diseases of unknown causes. For example,migraine,neurathenia,neurosis,menopausal syndrome,Meniere’s syndrome,cerebral concussion,cervical spondylopathy,learning disability Hyperactivity,Attention deficite,spasmodic jerk in children,minimal brain dysfunction syndrome,high blood pressure,low blood pressure,tachycardia,bradycardia,arrhythmia,premature beat,diabetes mellitus or diabetes insipidus,anorexia,frequent micturition,constipation and fever of unidentified origin are among them. Patients with above symptoms or diseases often for years go to see doctors in different departments such as neurology,neurosurgery,cardiology,endocrinology,orthopedics,otolaryngology,stomatology,gynecology,and pediatrics and their disorders are often difficult to treat. In recent 20 years,we studied the effect of the Chinese traditional manual reposition on the sequelae of brain trauma. During this research we unexpectedly disclosed the mystery of many symptoms and diseases of unknown causes and discovered that the common cause of these problems is \!rotatory axial subluxation (RAS)\",which causes the above symptoms by inducing blood insufficiency of vertibrobasilar arteries. After observation and analysis of thousands of these cases,the mechanisms,diagnosis and treatment of RAS have been systemically studied and well understood.Now it can be easily diagnosed only based on the X-ray film (including the 1 st and 2 nd cervical vertebrae in an anterioposterior mouth-open position). In stead of taking medicines or receiving operations,patients with this disorder can be treated only using manual reposition, a very simple,economical,but magic and effective therapy.This therapy has been accepted and praised by most patients.It is a new method of treatment and is resulted from the combination of Chinese traditional and Western medicine.
