A new complex, [Ni（L）2]·2（H2O） I （HL = 2-iminomethyl-6-methoxyphenol）, has been synthesized and structurally determined. The crystal belongs to the trigonal system, space group R3- with a = 1.9341 （3）, b ...A new complex, [Ni（L）2]·2（H2O） I （HL = 2-iminomethyl-6-methoxyphenol）, has been synthesized and structurally determined. The crystal belongs to the trigonal system, space group R3- with a = 1.9341 （3）, b = 1.9341 （3）, C = 1.2048（2） nm, V = 3.9029（11） nm^3, Mr = 395.05, Z = 9, Dc = 1.513 g·cm^-3, F（000） = 1854,μ= 1.153 mm^-1 and S = 1.014. Each Ni^Ⅱ atom is four-coordinated by two N and two O atoms from two different L anions to give a slightly distorted square-plane geometry. The complex forms a 3-D network structure through N-H...O and O-H...O hydrogen bonds containing an interesting six-membered water ring.展开更多
In modern Volleyball,the block action differentiates the world-class teams.The purpose of this study is to understand what determines the action of the middle blocker in the moment that precedes the technical procedur...In modern Volleyball,the block action differentiates the world-class teams.The purpose of this study is to understand what determines the action of the middle blocker in the moment that precedes the technical procedure of the block.The sample consisted of n4895 actions from 24 middle blockers,representing 30 footages of games from the 1st male volleyball division in the Portuguese league on season 2013/2014.We have also recorded the type of setting(ball tempo)of the opposing setter and the area where the opposing attack occurred.The chi-squared test analysis allowed us to establish that there is a relationship between the actions and the attack zones(x2=109.956;p≤0.001),as well as between the actions and the type of setting,in each attack zone(x2=3,523.678;p≤0.001 in all of them).Thus,we have verified that the action performs block but does not make contact with the ball that is the most frequent.We have also established that there is a strong tendency for the middle blocker to attempt to carry out the block in zones 3 and 4,to the detriment of the attack performed in defensive zone.展开更多
The aim of this paper is to analyze volleyball practice in the beaches of Copacabana(Rio de Janeiro,Brazil)and Carcavelos and Cascais Bay(Cascais,Portugal)and to review the forms of appropriation of public space based...The aim of this paper is to analyze volleyball practice in the beaches of Copacabana(Rio de Janeiro,Brazil)and Carcavelos and Cascais Bay(Cascais,Portugal)and to review the forms of appropriation of public space based on public policies and rules of the sport in question.Our methodology rests on bibliographic review and ethnographic research to map and distinguish the results in two spatial and cultural contexts that are considerably diverse.Results show that even with greater extension of Copacabana beach in comparison with Cascais,volleyball has a relevant impact in both areas.The installation of the necessary equipment for volleyball practice is also a form of impact in the landscape and establishment of territoriality,which is mainly activated when the game happens.展开更多
Since the promulgation of the Outline of the National Fitness Program,vigorously developing mass sports and fitness activities has always been its top priority.Promoting and developing a variety of mass sports and fit...Since the promulgation of the Outline of the National Fitness Program,vigorously developing mass sports and fitness activities has always been its top priority.Promoting and developing a variety of mass sports and fitness activities and improving the physical quality of the people throughout the country is the goal of achieving the national fitness program.Gas volleyball is a mass sports that integrates fitness,leisure and entertainment.It is not limited by age,gender,physical condition and technical level.It is a combination of ornamental,entertaining,competitive and fitness.Innovative sports programs are a sport that is popular among the masses.This paper analyzes the origin and development of gas volleyball through literature and mathematical statistics,promotes the popularization and development of gas volleyball,and makes more people love and participate in this sport.It is of great significance to develop social culture and improve the physical fitness of the whole people.展开更多
In modern volleyball,the middle blocker is regarded as one of the most important players for the tactical organization,because he is frequently requested for both defensive and offensive maneuvers.Regarding the block ...In modern volleyball,the middle blocker is regarded as one of the most important players for the tactical organization,because he is frequently requested for both defensive and offensive maneuvers.Regarding the block action,the coach must always consider the characteristics of the middle blocker,and his intervention should contemplate the ball tempo and the zone where the opposing attack occurs.The purpose of this study is to understand what the movements are that precede the action of the technical gesture of the block.The sample consisted of n=4,895 actions representing 30 footages of games from the 1st male volleyball division in the Portuguese league from season 2013/2014.We have analyzed the movements that each middle blocker has performed during the pre-block moment.We have also recorded the ball tempo on the opposing setter and the zone where the opposing attack occurred.We have established that there is a relationship between the movements performed and the attack zones(p≤0.001),as well as between the movements and the type of setting,in each attack zone(p≤0.001 in all of them).This way,we have determined that the Crossover Step is the most frequent movement,followed by the Drive Step.展开更多
基金the Key Laboratory of Non-ferrous Metal Materials and New Processing Technology, Ministry of Education and the State Key Laboratory of Coordination Chemistry
文摘A new complex, [Ni（L）2]·2（H2O） I （HL = 2-iminomethyl-6-methoxyphenol）, has been synthesized and structurally determined. The crystal belongs to the trigonal system, space group R3- with a = 1.9341 （3）, b = 1.9341 （3）, C = 1.2048（2） nm, V = 3.9029（11） nm^3, Mr = 395.05, Z = 9, Dc = 1.513 g·cm^-3, F（000） = 1854,μ= 1.153 mm^-1 and S = 1.014. Each Ni^Ⅱ atom is four-coordinated by two N and two O atoms from two different L anions to give a slightly distorted square-plane geometry. The complex forms a 3-D network structure through N-H...O and O-H...O hydrogen bonds containing an interesting six-membered water ring.
文摘In modern Volleyball,the block action differentiates the world-class teams.The purpose of this study is to understand what determines the action of the middle blocker in the moment that precedes the technical procedure of the block.The sample consisted of n4895 actions from 24 middle blockers,representing 30 footages of games from the 1st male volleyball division in the Portuguese league on season 2013/2014.We have also recorded the type of setting(ball tempo)of the opposing setter and the area where the opposing attack occurred.The chi-squared test analysis allowed us to establish that there is a relationship between the actions and the attack zones(x2=109.956;p≤0.001),as well as between the actions and the type of setting,in each attack zone(x2=3,523.678;p≤0.001 in all of them).Thus,we have verified that the action performs block but does not make contact with the ball that is the most frequent.We have also established that there is a strong tendency for the middle blocker to attempt to carry out the block in zones 3 and 4,to the detriment of the attack performed in defensive zone.
文摘The aim of this paper is to analyze volleyball practice in the beaches of Copacabana(Rio de Janeiro,Brazil)and Carcavelos and Cascais Bay(Cascais,Portugal)and to review the forms of appropriation of public space based on public policies and rules of the sport in question.Our methodology rests on bibliographic review and ethnographic research to map and distinguish the results in two spatial and cultural contexts that are considerably diverse.Results show that even with greater extension of Copacabana beach in comparison with Cascais,volleyball has a relevant impact in both areas.The installation of the necessary equipment for volleyball practice is also a form of impact in the landscape and establishment of territoriality,which is mainly activated when the game happens.
文摘Since the promulgation of the Outline of the National Fitness Program,vigorously developing mass sports and fitness activities has always been its top priority.Promoting and developing a variety of mass sports and fitness activities and improving the physical quality of the people throughout the country is the goal of achieving the national fitness program.Gas volleyball is a mass sports that integrates fitness,leisure and entertainment.It is not limited by age,gender,physical condition and technical level.It is a combination of ornamental,entertaining,competitive and fitness.Innovative sports programs are a sport that is popular among the masses.This paper analyzes the origin and development of gas volleyball through literature and mathematical statistics,promotes the popularization and development of gas volleyball,and makes more people love and participate in this sport.It is of great significance to develop social culture and improve the physical fitness of the whole people.
文摘In modern volleyball,the middle blocker is regarded as one of the most important players for the tactical organization,because he is frequently requested for both defensive and offensive maneuvers.Regarding the block action,the coach must always consider the characteristics of the middle blocker,and his intervention should contemplate the ball tempo and the zone where the opposing attack occurs.The purpose of this study is to understand what the movements are that precede the action of the technical gesture of the block.The sample consisted of n=4,895 actions representing 30 footages of games from the 1st male volleyball division in the Portuguese league from season 2013/2014.We have analyzed the movements that each middle blocker has performed during the pre-block moment.We have also recorded the ball tempo on the opposing setter and the zone where the opposing attack occurred.We have established that there is a relationship between the movements performed and the attack zones(p≤0.001),as well as between the movements and the type of setting,in each attack zone(p≤0.001 in all of them).This way,we have determined that the Crossover Step is the most frequent movement,followed by the Drive Step.
