目的探讨老年人常速行走下步态参数特征及其与工具性生活活动能力(instrumental activity of daily living,IADL)水平的关系。方法2023年2-8月,应用方便抽样,选取北京医院60岁及以上自愿接受调查的老年人为研究对象进行横断面调查,收集...目的探讨老年人常速行走下步态参数特征及其与工具性生活活动能力(instrumental activity of daily living,IADL)水平的关系。方法2023年2-8月,应用方便抽样,选取北京医院60岁及以上自愿接受调查的老年人为研究对象进行横断面调查,收集研究对象的一般特征资料,采用IADL量表评估IADL水平,依据IADL是否受损将研究对象分为两组,使用多传感器可穿戴步态分析仪IDEEA采集研究对象常速行走状况下的步态参数。采用多因素Logistic回归模型分析老年人常速行走下步态参数与IADL受损发生风险的关联。结果共739例纳入研究,受损组293例,正常组446例。与正常组比较,受损组老年人时空步态参数如步速、步频和步长等降低,动力学参数如大腿摆动功、地面冲击力和脚离地角度降低,步态周期参数如单脚支撑时间等增加,差异有统计学意义(P<0.05)。多因素Logistic回归分析结果显示,步频、步长、跨步长、足落地控制和脚离地角度与IADL受损存在关联(P<0.05)。年龄分层分析中,≥70岁老年人群步态特征与IADL受损发生风险呈现更为显著的相关性(P<0.05)。结论IADL受损老年人步态性能下降,时空步态参数与动力学参数与老年人IADL受损关系密切。展开更多
We studied the locomotor behaviour of white-headed langurs Trachypithecus leucocephalus and Francois＇ langurs T.francoisi to test two hypotheses： （1） these monkeys have evolved locomotor ability to support their a...We studied the locomotor behaviour of white-headed langurs Trachypithecus leucocephalus and Francois＇ langurs T.francoisi to test two hypotheses： （1） these monkeys have evolved locomotor ability to support their activities on limestone hills, and （2） Francois＇ langurs have evolved more diverse locomotor skills than white-headed langurs. Data were collected from 1996 - 1998 and in 2005 in Fusui Nature Reserve, Guangxi, and showed that the two species had similar locomotor types, but Francois＇ langurs had more locomotor modes （26） than white-headed langurs （12）. Quadrupedal walking and leaping were two major types, and white-headed langurs were more arboreal than Francois＇ langurs. We suggest that, while keeping their ancestral locomotor types, the two species have evolved new types allowing them to live on limestone cliffs. Compared to white-headed langurs, Francois＇ langurs have more diverse locomotor modes that probably have allowed them to live in more habitat types. As an evolutionary outcome, Francois＇ langurs have a larger distribution range .展开更多
This paper broke with the conventional ways of oxidizing and catalyzing. It researched a new way to prepare activated carbon from anthracites which employed oxidative additives. It investigated the effects of the addi...This paper broke with the conventional ways of oxidizing and catalyzing. It researched a new way to prepare activated carbon from anthracites which employed oxidative additives. It investigated the effects of the additive on adsorption and activation rate of the resultant activated carbon. The results showed that the new additives not only improved the adsorptivity but also increased the activation rate greatly, which is able to decrease the preparation cost.展开更多
Objective:To gain purified recombination protein rGPI-vWF A3 which can guide endothelial progenitor cells (EPCs) gathering to the internal surface of the injured vessels theoretically and analyze its bioactivity in vi...Objective:To gain purified recombination protein rGPI-vWF A3 which can guide endothelial progenitor cells (EPCs) gathering to the internal surface of the injured vessels theoretically and analyze its bioactivity in vitro. Methods: The plasmid vector of vWF A3 fusion protein which contained GPI structure was constructed and recombination protein rGPI-vWF A3 was expressed and its bioactivity was analyzed by ELISA and FCM. Results: Fusion protein vWF A3-GPI was expressed and purified by immunoaffinity chromatography and it could stably anchored on the surface of EPCs and showed its biological activities of collagen conjunction. Conclusion: These findings represent a novel strategy in EPC transplantation treatment for vessel injury.展开更多
Energy flexibility can address the challenges of large scale integration of renewable energy resources and thereby increasing imbalance in the power system. Flexible power system can provide reliable supply, low elect...Energy flexibility can address the challenges of large scale integration of renewable energy resources and thereby increasing imbalance in the power system. Flexible power system can provide reliable supply, low electricity cost and sustainability. Various situations and factors influence the adoption of the flexibility solutions, such as flexible electricity generation, demand-response, and electricity storage. This paper tries to analyze the current energy flexibility solutions and the factors that can influence the energy flexibility adoption. This paper takes Philippines as case study to provide an overview of the current condition of the Philippines＇ power system and discuss the energy flexibility in the Philippines＇ power system. A further discussion and recommendation is conducted in the end of the paper.展开更多
Plant extracts with antioxidant activities have effect on male mule ducks performance, and livestock animals have a strong metabolism activity, due to their high production requirements. It can lead to oxidative stres...Plant extracts with antioxidant activities have effect on male mule ducks performance, and livestock animals have a strong metabolism activity, due to their high production requirements. It can lead to oxidative stress disorders; deteriorate growth performance and even their health. The objective of this study was to assess the effect of a mixture of active ingredients of plant extracts, known for their antioxidant and anti-inflammatory properties, on performances of mule ducks, in rearing and force-feeding period. Then 3,200 day-old mule ducks （MMGxPKL） were separated in 2 groups （negative control and treatment = EL） ×4 replicates per group for the rearing period. Each group received the same feeding program. EL group was supplemented, until the force-feeding period, with a mixture of actives from plants incorporated at 0.5% in the complete feed. At 84 days, the live weight and the feed consumption were measured for each treatment. Blood samples were also taken to measure the activity of two antioxidant enzymes： SOD （superoxide dismutase） and GPx （glutathione peroxidase）. For force-feeding, the ducks were separated among 3 farmers during 12 days. At slaughter, individual measures of breast and liver were conducted. At 84 days, mean live weight for EL group was improved by 3.7% （p 〈 0.001）. Feed conversion ratio was also improved （4.50 versus 4.62）. At slaughter, breast weight was higher for EL group （p 〈 0.01）. A high variability in the results of the activities of antioxidant enzymes was obtained. A decrease in SOD activity in erythrocytes was observed for the EL group （p 〈 0.05）. The results showed that the actives assessed in this study, distributed to ducks during the rearing period, had a beneficial effect on growth performance over that period. The mechanisms of endogenous antioxidant system and inflammatory responses remain to be elucidated.展开更多
Grapes are important sources of antioxidants compounds and one of the most used varieties to elaborate juices is ＂Isabel＂, or ＂Isabella＂, as it is called in North-America. This study aimed to evaluate the antioxid...Grapes are important sources of antioxidants compounds and one of the most used varieties to elaborate juices is ＂Isabel＂, or ＂Isabella＂, as it is called in North-America. This study aimed to evaluate the antioxidant activity of Isabella grape juices from the tropical semi-arid climate produced in Brazil on March and September, 2010. Total phenolics and anthocyanins were determined, as well as the antioxidant capacity by DPPH, FRAP and hydrophilic ORAC methods. Test T was used to compare statistical difference at 5% of significance level. As expected, the results showed that the season can play a significant role on phenolics content and antioxidant power. Polyphenols content in juices varied from 82.9 ± 0.92 to 102.2± 1.59 mg GAE 100 mL1- and anthocyanins content ranged from 44.3 ± 2.01 to 129.5 ± 2.82 mg cyanidin-3-glucoside 100 mL-1. Regression analyses showed a high correlation of antioxidant capacity and anthocyanins content. Grapes from Sao Francisco River Valley demonstrated to be a good source of antioxidant for human diet.展开更多
OBJECTIVE: To explore the unique ideas, properties, and standards of fracture repositioning with osteopathy in traditional Mongolian medicine in China.METHODS: Based on the natural life concept of "integration of...OBJECTIVE: To explore the unique ideas, properties, and standards of fracture repositioning with osteopathy in traditional Mongolian medicine in China.METHODS: Based on the natural life concept of "integration of universe and man," osteopathy in traditional Mongolian medicine in China uses the modern principles and methods of physiology, psychol-ogy, and biomechanics. Against this background,we explored the unique ideas, properties, and standards of fracture repositioning in traditional Mongolian medicine.RESULTS: Fracture treatment with osteopathy in traditional Mongolian medicine in China is based on(a) the ideas of natural, sealed, self and dynamic repositioning of fractures;(b) the properties of structural continuity and functional completeness;(c) the standards of "integration of movement and stillness" and "force to force." CONCLUSION: The unique ideas, properties, and standards of fracture repositioning with osteopathy in traditional Mongolian medicine in China have resulted in the widespread use of such techniques and represents the future direction of the development of fracture repositioning.展开更多
Objective:To observe the curative effect of combined Chinese medicine,acupuncture and rehabilitation therapy on vascular dementia(VD),and to compare the Western medicine piracetam.Methods:Total 134 VD patients screene...Objective:To observe the curative effect of combined Chinese medicine,acupuncture and rehabilitation therapy on vascular dementia(VD),and to compare the Western medicine piracetam.Methods:Total 134 VD patients screened in reference to the standard for VD diagnosis in DSM-IV were randomly divided into a Chinese medicine plus rehabilitation group(32 cases),a Chinese medicine plus acupuncture group(33 cases),a Chinese medicine and acupuncture plus rehabilitation group(37 cases) and a Western medicine piracetam group(32 cases).Mini Mental State Examination(MMSE) and Bless Behavior Scale(BBS) were used to assess changes in intelligence disorder before treatment and after 12-week treatment.Results:BBS score,living ability and daily habit were enhanced after treatment in all groups.Cognitive function and behavioral ability were improved with similar total curative effects in all the 4 groups.Directional ability and short-term memory ability were significantly enhanced after treatment(P<0.05) in both the Chinese medicine plus rehabilitation group and the Chinese medicine plus acupuncture group groups.Living ability was significantly improved after treatment in the Chinese medicine and acupuncture plus rehabilitation group(P<0.01).However,no obvious difference was shown before and after treatment in the piracetam group.Conclusion:The improvement of living ability in the comprehensive treatment group is better than that in the other groups.Chinese medicine and acupuncture plus rehabilitation treatment can improve intelligence and living ability of senile VD patients.展开更多
文摘目的探讨老年人常速行走下步态参数特征及其与工具性生活活动能力(instrumental activity of daily living,IADL)水平的关系。方法2023年2-8月,应用方便抽样,选取北京医院60岁及以上自愿接受调查的老年人为研究对象进行横断面调查,收集研究对象的一般特征资料,采用IADL量表评估IADL水平,依据IADL是否受损将研究对象分为两组,使用多传感器可穿戴步态分析仪IDEEA采集研究对象常速行走状况下的步态参数。采用多因素Logistic回归模型分析老年人常速行走下步态参数与IADL受损发生风险的关联。结果共739例纳入研究,受损组293例,正常组446例。与正常组比较,受损组老年人时空步态参数如步速、步频和步长等降低,动力学参数如大腿摆动功、地面冲击力和脚离地角度降低,步态周期参数如单脚支撑时间等增加,差异有统计学意义(P<0.05)。多因素Logistic回归分析结果显示,步频、步长、跨步长、足落地控制和脚离地角度与IADL受损存在关联(P<0.05)。年龄分层分析中,≥70岁老年人群步态特征与IADL受损发生风险呈现更为显著的相关性(P<0.05)。结论IADL受损老年人步态性能下降,时空步态参数与动力学参数与老年人IADL受损关系密切。
文摘We studied the locomotor behaviour of white-headed langurs Trachypithecus leucocephalus and Francois＇ langurs T.francoisi to test two hypotheses： （1） these monkeys have evolved locomotor ability to support their activities on limestone hills, and （2） Francois＇ langurs have evolved more diverse locomotor skills than white-headed langurs. Data were collected from 1996 - 1998 and in 2005 in Fusui Nature Reserve, Guangxi, and showed that the two species had similar locomotor types, but Francois＇ langurs had more locomotor modes （26） than white-headed langurs （12）. Quadrupedal walking and leaping were two major types, and white-headed langurs were more arboreal than Francois＇ langurs. We suggest that, while keeping their ancestral locomotor types, the two species have evolved new types allowing them to live on limestone cliffs. Compared to white-headed langurs, Francois＇ langurs have more diverse locomotor modes that probably have allowed them to live in more habitat types. As an evolutionary outcome, Francois＇ langurs have a larger distribution range .
文摘This paper broke with the conventional ways of oxidizing and catalyzing. It researched a new way to prepare activated carbon from anthracites which employed oxidative additives. It investigated the effects of the additive on adsorption and activation rate of the resultant activated carbon. The results showed that the new additives not only improved the adsorptivity but also increased the activation rate greatly, which is able to decrease the preparation cost.
基金Supported by the National Natural Science Foundation of China(30800479)
文摘Objective:To gain purified recombination protein rGPI-vWF A3 which can guide endothelial progenitor cells (EPCs) gathering to the internal surface of the injured vessels theoretically and analyze its bioactivity in vitro. Methods: The plasmid vector of vWF A3 fusion protein which contained GPI structure was constructed and recombination protein rGPI-vWF A3 was expressed and its bioactivity was analyzed by ELISA and FCM. Results: Fusion protein vWF A3-GPI was expressed and purified by immunoaffinity chromatography and it could stably anchored on the surface of EPCs and showed its biological activities of collagen conjunction. Conclusion: These findings represent a novel strategy in EPC transplantation treatment for vessel injury.
文摘Energy flexibility can address the challenges of large scale integration of renewable energy resources and thereby increasing imbalance in the power system. Flexible power system can provide reliable supply, low electricity cost and sustainability. Various situations and factors influence the adoption of the flexibility solutions, such as flexible electricity generation, demand-response, and electricity storage. This paper tries to analyze the current energy flexibility solutions and the factors that can influence the energy flexibility adoption. This paper takes Philippines as case study to provide an overview of the current condition of the Philippines＇ power system and discuss the energy flexibility in the Philippines＇ power system. A further discussion and recommendation is conducted in the end of the paper.
文摘Plant extracts with antioxidant activities have effect on male mule ducks performance, and livestock animals have a strong metabolism activity, due to their high production requirements. It can lead to oxidative stress disorders; deteriorate growth performance and even their health. The objective of this study was to assess the effect of a mixture of active ingredients of plant extracts, known for their antioxidant and anti-inflammatory properties, on performances of mule ducks, in rearing and force-feeding period. Then 3,200 day-old mule ducks （MMGxPKL） were separated in 2 groups （negative control and treatment = EL） ×4 replicates per group for the rearing period. Each group received the same feeding program. EL group was supplemented, until the force-feeding period, with a mixture of actives from plants incorporated at 0.5% in the complete feed. At 84 days, the live weight and the feed consumption were measured for each treatment. Blood samples were also taken to measure the activity of two antioxidant enzymes： SOD （superoxide dismutase） and GPx （glutathione peroxidase）. For force-feeding, the ducks were separated among 3 farmers during 12 days. At slaughter, individual measures of breast and liver were conducted. At 84 days, mean live weight for EL group was improved by 3.7% （p 〈 0.001）. Feed conversion ratio was also improved （4.50 versus 4.62）. At slaughter, breast weight was higher for EL group （p 〈 0.01）. A high variability in the results of the activities of antioxidant enzymes was obtained. A decrease in SOD activity in erythrocytes was observed for the EL group （p 〈 0.05）. The results showed that the actives assessed in this study, distributed to ducks during the rearing period, had a beneficial effect on growth performance over that period. The mechanisms of endogenous antioxidant system and inflammatory responses remain to be elucidated.
文摘Grapes are important sources of antioxidants compounds and one of the most used varieties to elaborate juices is ＂Isabel＂, or ＂Isabella＂, as it is called in North-America. This study aimed to evaluate the antioxidant activity of Isabella grape juices from the tropical semi-arid climate produced in Brazil on March and September, 2010. Total phenolics and anthocyanins were determined, as well as the antioxidant capacity by DPPH, FRAP and hydrophilic ORAC methods. Test T was used to compare statistical difference at 5% of significance level. As expected, the results showed that the season can play a significant role on phenolics content and antioxidant power. Polyphenols content in juices varied from 82.9 ± 0.92 to 102.2± 1.59 mg GAE 100 mL1- and anthocyanins content ranged from 44.3 ± 2.01 to 129.5 ± 2.82 mg cyanidin-3-glucoside 100 mL-1. Regression analyses showed a high correlation of antioxidant capacity and anthocyanins content. Grapes from Sao Francisco River Valley demonstrated to be a good source of antioxidant for human diet.
基金Supported by the State Natural Science Foundation of China:Chinese Mongolian Traditional Osteopathy Base on Technique Crite Rion of Biolongical Macroscopic Idea Dynamic Reduction in Fracture(No.81260513)the Inner Mongolia Mongolia Major Program of Science and Technology Plan:Multi-functionalization Research and Development of External(Self)Fixation Using Small Splints in Chinese Mongolian Osteopathy(2010-2014)
文摘OBJECTIVE: To explore the unique ideas, properties, and standards of fracture repositioning with osteopathy in traditional Mongolian medicine in China.METHODS: Based on the natural life concept of "integration of universe and man," osteopathy in traditional Mongolian medicine in China uses the modern principles and methods of physiology, psychol-ogy, and biomechanics. Against this background,we explored the unique ideas, properties, and standards of fracture repositioning in traditional Mongolian medicine.RESULTS: Fracture treatment with osteopathy in traditional Mongolian medicine in China is based on(a) the ideas of natural, sealed, self and dynamic repositioning of fractures;(b) the properties of structural continuity and functional completeness;(c) the standards of "integration of movement and stillness" and "force to force." CONCLUSION: The unique ideas, properties, and standards of fracture repositioning with osteopathy in traditional Mongolian medicine in China have resulted in the widespread use of such techniques and represents the future direction of the development of fracture repositioning.
基金supported by Research and Development Fund in Sci-tech Plan of Beijing Municipal Science Committee (No. Z07050700690709)
文摘Objective:To observe the curative effect of combined Chinese medicine,acupuncture and rehabilitation therapy on vascular dementia(VD),and to compare the Western medicine piracetam.Methods:Total 134 VD patients screened in reference to the standard for VD diagnosis in DSM-IV were randomly divided into a Chinese medicine plus rehabilitation group(32 cases),a Chinese medicine plus acupuncture group(33 cases),a Chinese medicine and acupuncture plus rehabilitation group(37 cases) and a Western medicine piracetam group(32 cases).Mini Mental State Examination(MMSE) and Bless Behavior Scale(BBS) were used to assess changes in intelligence disorder before treatment and after 12-week treatment.Results:BBS score,living ability and daily habit were enhanced after treatment in all groups.Cognitive function and behavioral ability were improved with similar total curative effects in all the 4 groups.Directional ability and short-term memory ability were significantly enhanced after treatment(P<0.05) in both the Chinese medicine plus rehabilitation group and the Chinese medicine plus acupuncture group groups.Living ability was significantly improved after treatment in the Chinese medicine and acupuncture plus rehabilitation group(P<0.01).However,no obvious difference was shown before and after treatment in the piracetam group.Conclusion:The improvement of living ability in the comprehensive treatment group is better than that in the other groups.Chinese medicine and acupuncture plus rehabilitation treatment can improve intelligence and living ability of senile VD patients.
