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加强航天技术开发,迎接“国际空间年”
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作者 邓寿鹏 《科技导报》 CAS CSCD 1991年第1期42-45,共4页
一、一次性运载火箭的世界竞争实施任何进入太空的空间活动,必不可少的条件是提供升空动力和相应的运载工具。这些运载工具既可以是一次性使用的,也可以是多次重复使用的。在运载工具的发展进程中,后期开发的多次性运载工具曾试图取代... 一、一次性运载火箭的世界竞争实施任何进入太空的空间活动,必不可少的条件是提供升空动力和相应的运载工具。这些运载工具既可以是一次性使用的,也可以是多次重复使用的。在运载工具的发展进程中,后期开发的多次性运载工具曾试图取代早期开发的一次性运载工具,目前这个进程已出现曲折,一次性运载工具又再度兴起。 展开更多
关键词 航天技术 开发 国际空间年
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国际空间年——促进空间科技和国际合作的重大战略措施
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作者 张继庆 《中国航天》 1988年第12期6-8,共3页
本文概述了国际空间年的由来和背景,各主要宇航国家和国际组织的反应,几次重大国际会议的情况,美国和苏联的建议以及我国对参加这一活动的态度。
关键词 国际空间年 空间科技 国际合作
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迈向太空的脚步
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作者 奇云 《发明与革新》 1992年第8期21-23,共3页
1989年12月18日,第44届联大通过提案,宣布1992年为国际空间年。国际空间年的宗旨是发扬哥伦布的开拓精神和国际地球物理年的国际合作精神(1992年为哥伦布航行到美洲大陆500周年和国际地球物理年355周年),
关键词 太空 国际空间年 月球探索 空间
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Lean Healthy Children with Short Stature Have Distinct Eating Patterns
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作者 Shir Hadani Yael Lebenthal +3 位作者 Liora Lazar Raanan Shamir Moshe Phillip Michal Yackobovitch-Gavan 《Journal of Food Science and Engineering》 2016年第6期299-307,共9页
Nutrition plays an essential role in normal linear growth in children. Knowledge of the eating styles and dietary consumption of healthy short children from developed countries is scarce. The aim of this study was to ... Nutrition plays an essential role in normal linear growth in children. Knowledge of the eating styles and dietary consumption of healthy short children from developed countries is scarce. The aim of this study was to investigate the dietary patterns in idiopathic short stature (ISS) and relatively low weight children compared to children with normal stature and weight. This research is a case-control study of 86 pre-pubertal healthy children, mean age 5.9 ± 1.5 years. The study group comprised 43 ISS children; 43 age-matched children with normal stature and weight served as controls. Outcome measures included: dietary patterns and physical activity. The absolute daily average energy, protein and carbohydrate intake was significantly lower in the ISS children (P 〈 0.05); after correcting for body surface area, no significant differences were found between groups. Intake of micronutrients calcium, iron, zinc, vitamin A and vitamin C, expressed as percentage from Recommended Dietary Allowance, was significantly lower in the ISS children (P 〈 0.05), who had lower food responsiveness, higher satiety responsiveness, lesser enjoyment of food and were slower eaters (P 〈 0.001). Physical activity was sedentary in both the ISS cases and controls. Our findings in healthy, pre-pubertal, relatively lean ISS children point to a distinct eating pattern with no alteration in physical activity. Understanding the differences in dietary intake and eating behaviors may be beneficial in the development of targeted nutritional intervention for lean ISS children. 展开更多
关键词 Dietary patterns eating behaviors lean children short stature.
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Analysis of misdiagnosis in patients with multiple trauma 被引量:5
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作者 YANG Fan BAI Xiang-jun LI Zhan-fei 《Chinese Journal of Traumatology》 CAS 2011年第1期20-24,共5页
Objective: To explore the features, treatment outcomes and reasons for misdiagnosis in patients with multiple trauma, so as to decrease the incidence of misdiagnosis.Methods: A total of 3 163 patients with multiple ... Objective: To explore the features, treatment outcomes and reasons for misdiagnosis in patients with multiple trauma, so as to decrease the incidence of misdiagnosis.Methods: A total of 3 163 patients with multiple trauma who were admitted in our department from August 1997 to August 2008, were retrospectively studied to compare the features of diagnosis and treatment. There were 2 117 males (66.93%) and 1 046 females (33.07%) with the mean age of 36.46 years (range, 14-80 years). Parameters such as general status, traumatic condition, diagnosis and treatment situation, prognosis and mortality were analyzed. The differences between misdiagnosis group and correct diagnosis group were compared in terms of severity of injury, complications and treatment outcomes to elucidate the cause and prevention of misdiagnosis.Results: The misdiagnosis rate of multiple trauma in this study was 16.19%. The major anatomic sites misdiagnosed were limbs and pelvis (299 positions, 39.50%), abdominal region and pelvic organ (148 positions, 19.55%),and thoracic region (109 positions, 14.40%). In misdiagnosis group, ISS, length of hospital stay, rates of disturbance of consciousness, critical cases and shock cases were 33.78± 19.64, (23.59±7.26) days, 49.22%, 33.01% and 47.46%,respectively, which were significantly higher than those of the correct diagnosis group (P〈0.01). And the data showed that the more serious the injury was, the higher the rate of misdiagnosis would be. The rate of primary diagnosis by trauma surgeons in correct diagnosis group was 75.78%, significantly higher than that of the misdiagnosis group ( x2=382.01,P〈0.01). The mortality rate of the mi sdiagnosis group was 2.93%, which was significantly higher than that for all patients ( x2=5.22, P〈0.05).Conclusions: The results indicated that patients with severe multiple trauma are at high risk of misdiagnosis in early treatment. The mortality rate of misdiagnosed patients is higher than the correctly-diagnosed patients. To prevent misdiagnosis, physicians need to take great care to conduct thorough clinical examinations and repeated evaluation. 展开更多
关键词 Delayed diagnosis Diagnostic errors Multiple trauma Prevention and control Treatment outcome
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Surgical treatment strategy for multiple injury patients in ICU 被引量:1
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作者 ZHANG Lian-yang YAO Yuan-zhang JIANG Dong-po ZHOU Jian HUANG Xian-kai SHEN Yue HUANG Jian 《Chinese Journal of Traumatology》 CAS 2011年第1期42-45,共4页
Objective: To investigate the surgical treatment for patients with multiple injuries in ICU.Methods: Clinical data of 163 multiple injury patients admitted to ICU of our hospital from January 2006 to January 2009 we... Objective: To investigate the surgical treatment for patients with multiple injuries in ICU.Methods: Clinical data of 163 multiple injury patients admitted to ICU of our hospital from January 2006 to January 2009 were retrospectively studied, including 118 males and 45 females, with the mean age of 36.2 years (range, 5-67 years). The injury regions included head and neck (29 cases),face (32 cases), chest (89 cases), abdomen (77 cases), pelvis and limbs (91 cases) and body surface (83 cases). There were 57 cases combined with shock. ISS values varied from 10 to 54, 18.42 on average. Patients received surgical treatments in ICU within respectively 24 hours (10 cases), 24-48 hours (8 cases), 3-7 days (7 cases) and 8-14 days (23 cases).Results: Forthe 163 patients, the duration of ICU stay ranged from 2 to 29 days, with the average value of 7.56 days. Among them, 143 were cured (87.73%), 11 died in the hospital (6.75%) due to severe hemorrhagic shock (6 cases),craniocerebral injury (3 cases) and multiple organ failure (2 cases), and 9 died after voluntarily discharging from hospital (5.52%). The total mortality rate was 12.27%.Conclusions: The damage control principle should be followed when multiple injury patients are resuscitated in ICU. Surgical treatment strategies include actively controlling hemorrhage, treating the previously missed injuries and related wounds or surgical complications and performing planned staging operations. 展开更多
关键词 SURGERY Multiple trauma Intensive care units
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