I Was born in April, when spring is in the air, the sun shines, the sky is blue, and the fragrance of lilacs is everywhere. This year's birthday was unforgettable.As the SARS epidemic had broken out in Beijing, it...I Was born in April, when spring is in the air, the sun shines, the sky is blue, and the fragrance of lilacs is everywhere. This year's birthday was unforgettable.As the SARS epidemic had broken out in Beijing, it was spent under the threat of this killer disease.展开更多
Purpose:To describe the quality of life(QOL)of Syrian people with lower limb amputation after the war.Methods:A cross-sectional study conducted at the Military Hospital in Lattakia,from May to August 2019.A convenienc...Purpose:To describe the quality of life(QOL)of Syrian people with lower limb amputation after the war.Methods:A cross-sectional study conducted at the Military Hospital in Lattakia,from May to August 2019.A convenience sample of 65 adult males who had previously undergone amputation of a lower limb was included in this study.Participants'data were collected including age,marital status,employment,time since amputation,level of amputation,type of amputation and the use of assistive devices.The QOL was measured using the World Health Organization Quality of Life Brief Version(WHO QOL-BREF).Data analysis was done by using SPSS version 20.Results:Forty(61.5%)of subjects were between age of 40-60.Below knee and unilateral lower-limb amputees formed the highest number 52(80.0%)and 51(78.5%)respectively.The mean scores of environment,physical health,psychological,and social relationships domains of QOL were 15.86,15.18,14.66,and 6.64,respectively.There were statistically significant differences in various domains of QOL between groups with different status of employment,financial support,amputated lower limb,duration since amputation,and cause of amputation(P<0.05).Conclusion:There is a need to pay attention to experiences and the quality of life among Syrian patients with war-related amputation.展开更多
The main idea of pervasive computing is to make computing exist everywhere in the physical world.The smart home system is an important realisation of pervasive computing whose aim is to provide system users with an in...The main idea of pervasive computing is to make computing exist everywhere in the physical world.The smart home system is an important realisation of pervasive computing whose aim is to provide system users with an intelligent life experience.The key technique used to realise this is context awareness.Contexts in the living space can provide large amounts of information regarding users’behaviours and habits.Together with an information system,it can automatically execute many common operations of applications,instead of users,and can make the applications"smart".However,since contexts in the environment are diverse and sensitive,it is difficult to choose the ones that are most useful to the users’current activity.A proper scheduling strategy should first consider the users’demand.This paper proposes a context-aware scheduling algorithm that is based on correlation,with the purpose of improving the utilization rate of context collections.Experiments show that with the priority based on correlation in low-level contexts,the scheduling of reasoning tasks can reduce the cost of transmission.展开更多
The potability of water wells, drilling and tap water is the determining factor for the quality management of health of the urban and rural population. This study has been done on the basis of monitoring aspect such a...The potability of water wells, drilling and tap water is the determining factor for the quality management of health of the urban and rural population. This study has been done on the basis of monitoring aspect such as pH, content ammonium, nitrate, nitrite and chloride from a physico chemical point of view. This study allowed the chemical and bacteriological analysis of samples, based on the result obtained, and the potability of water was defined. The bacteriological analysis was carried out taking account of the total flora, coliforms and Escherichia coll. This work gave rise to analyze 36 samples of water from wells, eight samples of drilling water and nine samples of water taps from municipalities such as Mamou, Dalaba and Pita. Water wells represent 90% of water supplies in drinking water to the population. In this research, collection of samples was very important. This study shows that 16 samples from 52 are potable, therefore, it is urgent to focus on the treatment of sewage in order to ensure better health for the population from administrative region of Mamou.展开更多
While lifestyle modifications are currently used as firstline treatment for subjects with gastroesophageal reflux disease (GERD), the pathogenetic role of lifestyle factors and consequently, the efficacy of lifestyle ...While lifestyle modifications are currently used as firstline treatment for subjects with gastroesophageal reflux disease (GERD), the pathogenetic role of lifestyle factors and consequently, the efficacy of lifestyle measures is controversial. Our aim was to systematically review the pathogenetic link between overweight/ obesity, dietary habits, physical activity and GERD, and the beneficial effect of specific recommended changes, by means of the available literature from the 1999 to the present. Obesity, in particular, abdominal obesity, plays a key role in determining GERD symptoms and complications through mechanical and metabolic effects. Controlled weight loss (by diet or surgery) is effective in improving GERD symptoms. No definitive data exist regarding the role of diet and, in particular, of specific foods or drinks, in influencing GERD clinical manifestations. Moderate physical activity seems to be beneficial for GERD, while vigorous activity may be dangerous in predisposed individuals. In conclusion, being obese/overweight and GERD-specific symptoms and endoscopic features are related, and weight loss significantly improves GERD clinical-endoscopic manifestations. The role of dietary behavior, mainly in terms of specific dietary components, remains controversial. Mild routine physical activity in association with diet modifications, i.e. a diet rich in fiber and low in fat, is advisable in preventing reflux symptoms.展开更多
Authors of the text present Polish context of teachers’ professional promotion and teachers’ competencies. The text also has its empirical dimension-a research about teachers’ sense of life quality has been done. T...Authors of the text present Polish context of teachers’ professional promotion and teachers’ competencies. The text also has its empirical dimension-a research about teachers’ sense of life quality has been done. There are teachers’ expressions, collected and quoted during qualitative research. Teachers’ thoughts are concerned about the sense of life quality in the context of working at lower secondary school.展开更多
In this paper, I first create new frameworks for a reflection on “human” and “humanism” in the time of globalization. As our intellectual perception of the world is becoming more universal and all-inclusive, so sh...In this paper, I first create new frameworks for a reflection on “human” and “humanism” in the time of globalization. As our intellectual perception of the world is becoming more universal and all-inclusive, so should also our hearts. The heart is the inner most core of being human, to become able to expand in unprecedented dimensions of human existence. In this context, I propose forgiveness as the guiding principle of expansion and inclusion, and consequently of becoming more human. If memory helps us to survive, forgetting allows us to go on living. The practice of forgetting, and consequently of reconciliation, is the distinctive and complex moment of human existence, when the human agent makes him/herself open and available to the present moment, and lives fully in the present moment. Once doing so, the present moment becomes the space in which s/he can reconcile with his/her past and shape his/her future. In the second part, I check possible impediments on our way to expansion and inclusion, as well as in our process of forgiveness and reconciliation. Pata?jali, in his instructions to yogis talks about kleshas, i.e. impediments or afflictions, which are weakening our way of thinking and acting. These kleshas include ignorance, ego, attachment, aversion, and the clinging to life. I take these kleshas also as afflictions on our way to becoming more human, or as impediments in our process of forgiveness and reconciliation. Finally, I reflect on the human urge to become more human. In our time of globalization, we are challenged to look at this urge from a universal perspective. This urge, bound with an inevitable process of forgiveness and reconciliation, challenges each religion and its dogmatic teaching, and represents the evaluative criterion. The spirituality, or religion, that which promulgates and lives forgiveness and reconciliation will automatically excel because it will succeed, without losing its own identity, to integrate and include otherness of the other.展开更多
The word “chudu” comes from Qu Yuan’s Li Sao “huang lan kui yu chu du xi, zhao ci yu yi jia ming”. The original meaning was the day of birth. After the Song Dynasty, the literati began to use it to refer to birth...The word “chudu” comes from Qu Yuan’s Li Sao “huang lan kui yu chu du xi, zhao ci yu yi jia ming”. The original meaning was the day of birth. After the Song Dynasty, the literati began to use it to refer to birthdays. By the end of the Ming Dynasty, they had been calling their birthdays “chudu” once they celebrated it and they were so keen on birthday celebrations. Gu Yanwu pointed out that the word “chudu” only fits “the old ministers (or the exiled ministers) who lamented the crash of the Yingcapital of the country of “Chu” such as Qu Yuan. At the same time, its use in Huang Zongxi’s and Wang Fuzhi’s birthday poems is also consistent with this context. The unique situation and mood of the adherents led them to be close to Qu Yuan and Wen Tianxiang, which bestowed “chudu” the special meaning. It is very suitable for the ministers who suffered the crash of their Dynasties or those who were exiled distantly to express their feelings about the old dynasties and old friends. After these people, Chen Yinke consciously acknowledged this layer of interpreting “chudu” and used it, which has not only enriched the connotation of “chudu”, but also extended its cultural life. From Qu Yuan to Wen Tianxiang, until Gu Yanwu, Huang Zongxi, Wang Fuzhi, and then to Chen Yinke, we can take a glimpse of the spiritual world of the Chinese adherents of Dynasties.展开更多
Dakar area landscape is mainly characterized by the existence of the "niaye"-or agricultural depressions located in the sand dunes system. In these depressions, the top-table of quaternary sand groundwater reaches o...Dakar area landscape is mainly characterized by the existence of the "niaye"-or agricultural depressions located in the sand dunes system. In these depressions, the top-table of quaternary sand groundwater reaches or overflows the soil surface. Because of a recent groundwater level drop, some of the niayes have become runoff-gathering sites. This water ensures various economical, environmental and social services, i.e. urban agriculture, drinking water supply of Dakar and formation of ecosystems supporting biodiversity. Given that rainwater infiltration is the only natural "input", conception and implemention of rainwater management PPP (Politics, Plan and Program) must necessarily take into account this interrelationl Nowadays, two acute problems are observed in the Dakar area. On the one hand, the niayes are threatened by a hydrological drying process due to the insufficiency of rainwater refill. On the other hand, the dramatic social pressure on the environment has led to the urbanization of these bottom-lands. Furthermore, because of the pluviometry decrease, a worsening of the nuisances (floods and malaria) related to surface waters occurs. Consequently, an appropriate runoff management should integrate both the "risk" and "resource" dimensions, thus allowing the protection of natural resources and a secure living environment. According to the limits of"classicai" solutions, this paper provides approach elements for building a sustainability plan focusing on emergent concerns, which would control rainwater in urbanized zones.展开更多
Teaching tools available on the internet presented in this paper may help the students in the study of cancer prevention to understand the consequences of lifestyle on health.They are all in English,they have been dow...Teaching tools available on the internet presented in this paper may help the students in the study of cancer prevention to understand the consequences of lifestyle on health.They are all in English,they have been downloaded for free and consist mainly in scientific texts and other documents,tables,graphics,atlases and animations.展开更多
In order to improve the efficiency of bioleaching heavy metal from the contaminated soil using Penicillium chrysogenum(P.chrysogenum),experiment was conducted to evaluate the influence of heavy metal stress on P.chrys...In order to improve the efficiency of bioleaching heavy metal from the contaminated soil using Penicillium chrysogenum(P.chrysogenum),experiment was conducted to evaluate the influence of heavy metal stress on P.chrysogenum during bioleaching.The morphology and physiology of P.chrysogenum were observed.Assuming that the heavy metals are all leached out from the experiment soil,heavy metals are added into the agar medium by simulating the heavy metal content in the soil.It is concluded that the survivable heavy metal contaminated soil mass range for P.chrysogenum is 2.5-5.0 g.As for biomass determination,the contaminated soil is added into the liquid medium directly.The soil mass that P.chrysogenum can be survivable is in the range of 2.5-8.75 g.In this mass range,the biomass of P.chrysogenum is bigger than that of the control sample.10 g soil mass is the threshold of the growth of P.chrysogenum.102.2 mg/L gluconic acid,156.4 mg/L oxalic acid,191.6 mg/L pyruvic acid,0.02 mg/L citric acid,0.03 mg/L malic acid and 70.6 mg/L succinic acid are determined after 15 d bioleaching.The mycelium is broken into fragments,and heavy metals are adsorbed on the cell wall or transported into the cytoplasm during bioleaching.The GOD activity declines from 1.08 U/mL to 0.2 U/mL under 400 mg/L of multi-metal stress.The influence of Pb on GOD activity is bigger than that of Cr and Cd,and the GOD activity is not influenced apparently by Mn,Zn and Cu.展开更多
The coordinates of the marked points of joints and the changes of foot force in the human walk motion are obtained with systems of motion image acquisition and force measuring.The effects of kinematics and dynamics on...The coordinates of the marked points of joints and the changes of foot force in the human walk motion are obtained with systems of motion image acquisition and force measuring.The effects of kinematics and dynamics on the human lower limb in different loads(0,10,20,30 kg) and walking speeds(0.8,1.3,1.7 m/s) have been investigated using the human dynamics model,.The results were as follows.First,with the increasing load,the dorsiflexion angle of ankle joint increased during the procedure of toe-off,the range of motion of the knee joint decreased,the flexion angle of the hip joint increased,and oppositely,the extension angle of the hip joint decreased.Second,with the increasing speed,the range of motion of the ankle joint,the maximum flexion angle of the knee joint,the flexion angle,extension angle of the hip joint and the range of motion of hip joint increased.Finally,the torque and power of the ankle joint,the knee joint and the hip joint increased with the increasing speed and load.The results can provide an important basis for the mechanism design of lower limb power-assisted exoskeleton.展开更多
An unusual case of a suicidal firearm injury is presented, in which the victim placed the gun under his chin and fired. However, none of the vital structures of the head and face were injured because the victim's chi...An unusual case of a suicidal firearm injury is presented, in which the victim placed the gun under his chin and fired. However, none of the vital structures of the head and face were injured because the victim's chin was considerably anterior to other facial structures as a result of a class Ⅲ facial deformity. This resulted in thetrajectory of the bullet being anterior to vital facial structures and not causing injury to those structures.展开更多
文摘I Was born in April, when spring is in the air, the sun shines, the sky is blue, and the fragrance of lilacs is everywhere. This year's birthday was unforgettable.As the SARS epidemic had broken out in Beijing, it was spent under the threat of this killer disease.
文摘Purpose:To describe the quality of life(QOL)of Syrian people with lower limb amputation after the war.Methods:A cross-sectional study conducted at the Military Hospital in Lattakia,from May to August 2019.A convenience sample of 65 adult males who had previously undergone amputation of a lower limb was included in this study.Participants'data were collected including age,marital status,employment,time since amputation,level of amputation,type of amputation and the use of assistive devices.The QOL was measured using the World Health Organization Quality of Life Brief Version(WHO QOL-BREF).Data analysis was done by using SPSS version 20.Results:Forty(61.5%)of subjects were between age of 40-60.Below knee and unilateral lower-limb amputees formed the highest number 52(80.0%)and 51(78.5%)respectively.The mean scores of environment,physical health,psychological,and social relationships domains of QOL were 15.86,15.18,14.66,and 6.64,respectively.There were statistically significant differences in various domains of QOL between groups with different status of employment,financial support,amputated lower limb,duration since amputation,and cause of amputation(P<0.05).Conclusion:There is a need to pay attention to experiences and the quality of life among Syrian patients with war-related amputation.
基金partially supported by the National Natural Science Foundation of China under Grant No.61103115the Hunan Provincial Natural Science Foundation of China under Grant No.11JJ4058the Scientific Research Fund of Hunan Provincial Education Department under Grant No.11A041
文摘The main idea of pervasive computing is to make computing exist everywhere in the physical world.The smart home system is an important realisation of pervasive computing whose aim is to provide system users with an intelligent life experience.The key technique used to realise this is context awareness.Contexts in the living space can provide large amounts of information regarding users’behaviours and habits.Together with an information system,it can automatically execute many common operations of applications,instead of users,and can make the applications"smart".However,since contexts in the environment are diverse and sensitive,it is difficult to choose the ones that are most useful to the users’current activity.A proper scheduling strategy should first consider the users’demand.This paper proposes a context-aware scheduling algorithm that is based on correlation,with the purpose of improving the utilization rate of context collections.Experiments show that with the priority based on correlation in low-level contexts,the scheduling of reasoning tasks can reduce the cost of transmission.
文摘The potability of water wells, drilling and tap water is the determining factor for the quality management of health of the urban and rural population. This study has been done on the basis of monitoring aspect such as pH, content ammonium, nitrate, nitrite and chloride from a physico chemical point of view. This study allowed the chemical and bacteriological analysis of samples, based on the result obtained, and the potability of water was defined. The bacteriological analysis was carried out taking account of the total flora, coliforms and Escherichia coll. This work gave rise to analyze 36 samples of water from wells, eight samples of drilling water and nine samples of water taps from municipalities such as Mamou, Dalaba and Pita. Water wells represent 90% of water supplies in drinking water to the population. In this research, collection of samples was very important. This study shows that 16 samples from 52 are potable, therefore, it is urgent to focus on the treatment of sewage in order to ensure better health for the population from administrative region of Mamou.
文摘While lifestyle modifications are currently used as firstline treatment for subjects with gastroesophageal reflux disease (GERD), the pathogenetic role of lifestyle factors and consequently, the efficacy of lifestyle measures is controversial. Our aim was to systematically review the pathogenetic link between overweight/ obesity, dietary habits, physical activity and GERD, and the beneficial effect of specific recommended changes, by means of the available literature from the 1999 to the present. Obesity, in particular, abdominal obesity, plays a key role in determining GERD symptoms and complications through mechanical and metabolic effects. Controlled weight loss (by diet or surgery) is effective in improving GERD symptoms. No definitive data exist regarding the role of diet and, in particular, of specific foods or drinks, in influencing GERD clinical manifestations. Moderate physical activity seems to be beneficial for GERD, while vigorous activity may be dangerous in predisposed individuals. In conclusion, being obese/overweight and GERD-specific symptoms and endoscopic features are related, and weight loss significantly improves GERD clinical-endoscopic manifestations. The role of dietary behavior, mainly in terms of specific dietary components, remains controversial. Mild routine physical activity in association with diet modifications, i.e. a diet rich in fiber and low in fat, is advisable in preventing reflux symptoms.
文摘Authors of the text present Polish context of teachers’ professional promotion and teachers’ competencies. The text also has its empirical dimension-a research about teachers’ sense of life quality has been done. There are teachers’ expressions, collected and quoted during qualitative research. Teachers’ thoughts are concerned about the sense of life quality in the context of working at lower secondary school.
文摘In this paper, I first create new frameworks for a reflection on “human” and “humanism” in the time of globalization. As our intellectual perception of the world is becoming more universal and all-inclusive, so should also our hearts. The heart is the inner most core of being human, to become able to expand in unprecedented dimensions of human existence. In this context, I propose forgiveness as the guiding principle of expansion and inclusion, and consequently of becoming more human. If memory helps us to survive, forgetting allows us to go on living. The practice of forgetting, and consequently of reconciliation, is the distinctive and complex moment of human existence, when the human agent makes him/herself open and available to the present moment, and lives fully in the present moment. Once doing so, the present moment becomes the space in which s/he can reconcile with his/her past and shape his/her future. In the second part, I check possible impediments on our way to expansion and inclusion, as well as in our process of forgiveness and reconciliation. Pata?jali, in his instructions to yogis talks about kleshas, i.e. impediments or afflictions, which are weakening our way of thinking and acting. These kleshas include ignorance, ego, attachment, aversion, and the clinging to life. I take these kleshas also as afflictions on our way to becoming more human, or as impediments in our process of forgiveness and reconciliation. Finally, I reflect on the human urge to become more human. In our time of globalization, we are challenged to look at this urge from a universal perspective. This urge, bound with an inevitable process of forgiveness and reconciliation, challenges each religion and its dogmatic teaching, and represents the evaluative criterion. The spirituality, or religion, that which promulgates and lives forgiveness and reconciliation will automatically excel because it will succeed, without losing its own identity, to integrate and include otherness of the other.
文摘The word “chudu” comes from Qu Yuan’s Li Sao “huang lan kui yu chu du xi, zhao ci yu yi jia ming”. The original meaning was the day of birth. After the Song Dynasty, the literati began to use it to refer to birthdays. By the end of the Ming Dynasty, they had been calling their birthdays “chudu” once they celebrated it and they were so keen on birthday celebrations. Gu Yanwu pointed out that the word “chudu” only fits “the old ministers (or the exiled ministers) who lamented the crash of the Yingcapital of the country of “Chu” such as Qu Yuan. At the same time, its use in Huang Zongxi’s and Wang Fuzhi’s birthday poems is also consistent with this context. The unique situation and mood of the adherents led them to be close to Qu Yuan and Wen Tianxiang, which bestowed “chudu” the special meaning. It is very suitable for the ministers who suffered the crash of their Dynasties or those who were exiled distantly to express their feelings about the old dynasties and old friends. After these people, Chen Yinke consciously acknowledged this layer of interpreting “chudu” and used it, which has not only enriched the connotation of “chudu”, but also extended its cultural life. From Qu Yuan to Wen Tianxiang, until Gu Yanwu, Huang Zongxi, Wang Fuzhi, and then to Chen Yinke, we can take a glimpse of the spiritual world of the Chinese adherents of Dynasties.
文摘Dakar area landscape is mainly characterized by the existence of the "niaye"-or agricultural depressions located in the sand dunes system. In these depressions, the top-table of quaternary sand groundwater reaches or overflows the soil surface. Because of a recent groundwater level drop, some of the niayes have become runoff-gathering sites. This water ensures various economical, environmental and social services, i.e. urban agriculture, drinking water supply of Dakar and formation of ecosystems supporting biodiversity. Given that rainwater infiltration is the only natural "input", conception and implemention of rainwater management PPP (Politics, Plan and Program) must necessarily take into account this interrelationl Nowadays, two acute problems are observed in the Dakar area. On the one hand, the niayes are threatened by a hydrological drying process due to the insufficiency of rainwater refill. On the other hand, the dramatic social pressure on the environment has led to the urbanization of these bottom-lands. Furthermore, because of the pluviometry decrease, a worsening of the nuisances (floods and malaria) related to surface waters occurs. Consequently, an appropriate runoff management should integrate both the "risk" and "resource" dimensions, thus allowing the protection of natural resources and a secure living environment. According to the limits of"classicai" solutions, this paper provides approach elements for building a sustainability plan focusing on emergent concerns, which would control rainwater in urbanized zones.
文摘Teaching tools available on the internet presented in this paper may help the students in the study of cancer prevention to understand the consequences of lifestyle on health.They are all in English,they have been downloaded for free and consist mainly in scientific texts and other documents,tables,graphics,atlases and animations.
基金Project(50925417)supported by the National Natural Science Foundation of China for Distinguished Young ScholarsProject(51074191)supported by the National Natural Science Foundation of ChinaProject(2012BAC09B04)supported by the National Key Technology Research and Development Program of China
文摘In order to improve the efficiency of bioleaching heavy metal from the contaminated soil using Penicillium chrysogenum(P.chrysogenum),experiment was conducted to evaluate the influence of heavy metal stress on P.chrysogenum during bioleaching.The morphology and physiology of P.chrysogenum were observed.Assuming that the heavy metals are all leached out from the experiment soil,heavy metals are added into the agar medium by simulating the heavy metal content in the soil.It is concluded that the survivable heavy metal contaminated soil mass range for P.chrysogenum is 2.5-5.0 g.As for biomass determination,the contaminated soil is added into the liquid medium directly.The soil mass that P.chrysogenum can be survivable is in the range of 2.5-8.75 g.In this mass range,the biomass of P.chrysogenum is bigger than that of the control sample.10 g soil mass is the threshold of the growth of P.chrysogenum.102.2 mg/L gluconic acid,156.4 mg/L oxalic acid,191.6 mg/L pyruvic acid,0.02 mg/L citric acid,0.03 mg/L malic acid and 70.6 mg/L succinic acid are determined after 15 d bioleaching.The mycelium is broken into fragments,and heavy metals are adsorbed on the cell wall or transported into the cytoplasm during bioleaching.The GOD activity declines from 1.08 U/mL to 0.2 U/mL under 400 mg/L of multi-metal stress.The influence of Pb on GOD activity is bigger than that of Cr and Cd,and the GOD activity is not influenced apparently by Mn,Zn and Cu.
文摘The coordinates of the marked points of joints and the changes of foot force in the human walk motion are obtained with systems of motion image acquisition and force measuring.The effects of kinematics and dynamics on the human lower limb in different loads(0,10,20,30 kg) and walking speeds(0.8,1.3,1.7 m/s) have been investigated using the human dynamics model,.The results were as follows.First,with the increasing load,the dorsiflexion angle of ankle joint increased during the procedure of toe-off,the range of motion of the knee joint decreased,the flexion angle of the hip joint increased,and oppositely,the extension angle of the hip joint decreased.Second,with the increasing speed,the range of motion of the ankle joint,the maximum flexion angle of the knee joint,the flexion angle,extension angle of the hip joint and the range of motion of hip joint increased.Finally,the torque and power of the ankle joint,the knee joint and the hip joint increased with the increasing speed and load.The results can provide an important basis for the mechanism design of lower limb power-assisted exoskeleton.
文摘An unusual case of a suicidal firearm injury is presented, in which the victim placed the gun under his chin and fired. However, none of the vital structures of the head and face were injured because the victim's chin was considerably anterior to other facial structures as a result of a class Ⅲ facial deformity. This resulted in thetrajectory of the bullet being anterior to vital facial structures and not causing injury to those structures.