Bromodomain containing 2 （Brd2） protein belongs to the Bromodomains and Extra Terminal domain （BET） family of chromatin adaptors characterized by the presence of two N-terminal tandem bromodomains and an exclusive...Bromodomain containing 2 （Brd2） protein belongs to the Bromodomains and Extra Terminal domain （BET） family of chromatin adaptors characterized by the presence of two N-terminal tandem bromodomains and an exclusive C-terminal extra terminal domain （ET） （Belkina and Denis, 2012; Shi and Vakoc, 2014）. Bromodomains are involved in recognizing acetylated histone tails and other acetylated proteins while the ET domain has been implicated in protein-protein interaction.展开更多
UNDER blue Beijing skies November＇s Asia-Pacific Economic Cooperation （APEC） Summit 2014 made a firm statement in the fight against the Ebola epidemic. The deadly disease was one of the central topics President Xi ...UNDER blue Beijing skies November＇s Asia-Pacific Economic Cooperation （APEC） Summit 2014 made a firm statement in the fight against the Ebola epidemic. The deadly disease was one of the central topics President Xi Jinping and President Barack Obama discussed during their bilateral talks on the sidelines of the APEC Informal Leaders＇ Meeting.展开更多
Kremlin boosts its profile with strengthened antiterrorist drive Vladimir Putin may well breathe a sigh of relief when hearing the news that Chechen rebel leader Shamil Basayev was killed. In recent years, fighting ag...Kremlin boosts its profile with strengthened antiterrorist drive Vladimir Putin may well breathe a sigh of relief when hearing the news that Chechen rebel leader Shamil Basayev was killed. In recent years, fighting against terrorism has been weighing heavily on the mind of the Russian president. Only a couple of days earlier.展开更多
SUN Baiqiu liked to read well known literature from all over the world when she was a little girl. She sympathized with the good-hearted characters and hated the greedy and the evil. She imagined that she would become...SUN Baiqiu liked to read well known literature from all over the world when she was a little girl. She sympathized with the good-hearted characters and hated the greedy and the evil. She imagined that she would become like a fairy godmother, holding a magic wand and helping the poor but kind people in distress. In 1963 she graduated from展开更多
With a commitment to reduce emissions,and its investment in green technology bringing down global costs,China is emerging as the leader in fighting climate change.EVERYBODY knows that our world is getting hotter.They ...With a commitment to reduce emissions,and its investment in green technology bringing down global costs,China is emerging as the leader in fighting climate change.EVERYBODY knows that our world is getting hotter.They also know why.Pumping out pollutants has transformed our world into a greenhouse;heat from the sun is now trapped by a“dirty”atmosphere.展开更多
Climate change and its resulting effects on seasonality are known to alter a variety of animal behaviors including those related to foraging,phenology,and migration.Although many studies focus on the impacts of phenol...Climate change and its resulting effects on seasonality are known to alter a variety of animal behaviors including those related to foraging,phenology,and migration.Although many studies focus on the impacts of phenological changes on physiology or ftness enhancing behaviors,fewer have investigated the relationship between variation in weather and phenology on risk assessment.Fleeing from predators is an economic decision that incurs costs and benefts.As environmental conditions change,animals may face additional stressors that affect their decision to fee and infuence their ability to effectively assess risk.Flight initiation distance(FID)—the distance at which animals move away from threats—is often used to study risk assessment.FID varies due to both internal and external biotic and physical factors as well as anthropogenic activities.We asked whether variation in weather and phenology is associated with risk-taking in a population of yellow-bellied marmots(Marmota faviventer).As the air temperature increased marmots tolerated closer approaches,suggesting that they either perceived less risk or that their response to a threat was thermally compromised.The effect of temperature was relatively small and was largely dependent upon having a larger range in the full data set that permitted us to detect it.We found no effects of either the date that snow disappeared or July precipitation on marmot FID.As global temperatures continue to rise,rainfall varies more and drought becomes more common,understanding climate-related changes in how animals assess risk should be used to inform population viability models.展开更多
A lawmaker from Yucun Village in east China is fighting plastic pollution with a novel weapon and roping in young entrepreneurs as partners.WHEN lawmaker Wang Yucheng came to Beijing to attend the"two sessions&qu...A lawmaker from Yucun Village in east China is fighting plastic pollution with a novel weapon and roping in young entrepreneurs as partners.WHEN lawmaker Wang Yucheng came to Beijing to attend the"two sessions"in March,he brought something unusual with him all the way from home.It was a pencil box containing several pencils.But it was no ordinary pencil box.It was his weapon to fight environmental degradation.展开更多
A brand new method of automatic north seeking/sight stabilizing is introduced for usage in land fighting vehicles such as tank, etc. Some inertial devices are installed additionally on the platform along with relat...A brand new method of automatic north seeking/sight stabilizing is introduced for usage in land fighting vehicles such as tank, etc. Some inertial devices are installed additionally on the platform along with relative control circuits to make its function of North seeking possible. Double position calculation is adopted in this method, and by alignment at two sites the azimuth angle can be figured out. Also the orientation and the horizontal shifts of the gyro are simultaneously measured and compensated so as to improve the accuracy of north seeking. The system can automatically seek north when the vehicle is immobile. And the time consumption is no more than 5.5 min. Besides, the system can keep azimuth angle and provide tilt angle and pitch angle of the vehicle.展开更多
The paper described a newly developed high performance compressed air foam system(CAFS). The effective system generates uniform foam w ith greater momentum by injecting compressed air into flowing foam solution. Foa ...The paper described a newly developed high performance compressed air foam system(CAFS). The effective system generates uniform foam w ith greater momentum by injecting compressed air into flowing foam solution. Foa m generated by this system presented superior viscous and wetting properties to water.A pendulum system was designed to measure yield stress of foam. The results pro ved the existence of yield stress of foam. And the increasing tendency of yield stress with gas fraction and bubble size has also been found out.展开更多
The objectives of this study arc： first, to obtain a description that a political party website is an effective means of communication to carry out socialization programs to members ofthc party or the party＇s virtua...The objectives of this study arc： first, to obtain a description that a political party website is an effective means of communication to carry out socialization programs to members ofthc party or the party＇s virtual public; second, to obtain a description that websitc is a useful means to give political education about people＇s political rights; third, to explore the implication of web＇s content for strengthening the political party＇s identity. The research approach used was interpretive approach to qualitative-descriptive methods. Interpretive method emphasizes culture from the perspective of social construction theory （Papa, Danicls, ＆ Spiker, 2008）. Data collection （Mann ＆ Stewart, 2000） conducted through site analysis of the People Justice＇s Party （Parti Kcadilan Rakyat） Malaysia website from January 16 to March 31 2010. The findings of this study arc the website is an effective means to disseminate political party＇s program. Although, the virtual public or party members were preferring a direct face-to-face interpersonal communication. The People Justice＇s Party, Malaysia has 14 MPN （Majclis Pimpinan Negeri/Rcgional Board） in the state-level. Regarding the political atmosphere in Malaysia, the wcbsite was an efficient tool. The costs required were very cheap. Second, the presence of party website opened a space for providing political education to more people. Third, the public responses stimulated improvement and strengthening the political party＇s identity.展开更多
Jane Eyre,rebellious woman in the Victorian Age,holds her remarkable status in the English literature as the one who dare to fight against the patriarchal society.Unlike her contemporaries,Jane Eyre believes that men ...Jane Eyre,rebellious woman in the Victorian Age,holds her remarkable status in the English literature as the one who dare to fight against the patriarchal society.Unlike her contemporaries,Jane Eyre believes that men and women are born to be equal and women should never be tamed by the male-centered world or feminist ego.Under the tremendous pressure,she still guards her own dignity and determines to achieve self-actualization instead of being an accessory of men.It’s her female consciousness that lead her to be an unusual figure that enjoys both the financial self-reliance and social equality.Self-respect,selfreliance and self-actualization comprise Jane’s female consciousness that is instructive to women and worths a further exploration.展开更多
The effects of rare earth（RE）on the structure,acidity,and catalytic performance of HZSM-5 zeolite were investigated.A series of RE/HZSM-5 catalysts,containing 7.54% RE（RE=La,Ce,Pr,Nd,Sm,Eu or Gd）,were prepared by ...The effects of rare earth（RE）on the structure,acidity,and catalytic performance of HZSM-5 zeolite were investigated.A series of RE/HZSM-5 catalysts,containing 7.54% RE（RE=La,Ce,Pr,Nd,Sm,Eu or Gd）,were prepared by the impregnation of the ZSM-5 type zeolites（Si/Al=64：1）with the corresponding RE nitrate aqueous solutions.The catalysts were characterized by means of FT-IR,UV-Vis,NH3-TPD,and IR spectroscopy of adsorbed pyridine.The catalytic performances of the RE/HZSM-5 for the catalytic cracking of mixed butane to light olefins were also measured with a fixed bed microreactor.The results revealed that the addition of light rare earth metal on the HZSM-5 catalyst greatly enhanced the selectivity to olefins,especially to propylene,thus increasing the total yield of olefins in the catalytic cracking of butane.Among the RE-modified HZSM-5 samples,Ce/HZSM-5 gave the highest yield of total olefins,and Nd/HZSM-5 gave the highest yield of propene at a reaction temperature of 600℃.The presence of rare earth metal on the HZSM-5 sample,not only modified the acidic properties of HZSM-5 including the amount of acid sites and acid type,that is,the ratio of L/B（Lewis acid/Brnsted acid）,but also altered the basic properties of it,which in turn promoted the catalytic performance of HZSM-5 for the catalytic cracking of butane.展开更多
Three novel fluorinated cationic surfactants were prepared by adopting perfluoro-2-methy1-2-pentene as raw substrate. The as-obtained fluorinated cationic surfactants exhibited excellent surface properties, all of the...Three novel fluorinated cationic surfactants were prepared by adopting perfluoro-2-methy1-2-pentene as raw substrate. The as-obtained fluorinated cationic surfactants exhibited excellent surface properties, all of them can reduce the surface tension of water to below 20.00mN/m at the critical micelle concentrations （CMC）. The incorporation of SDS, AOS, APG or LAB into 2-（4-（3,3,4,4,5,5,5-heptafluoro- 2,2-bis（trifluoromethyl）pentyl）benzamido）-N,N-dimethylethana-mine oxide 4a could generate much lower CMC and surface tension value at the CMC than individual 4a. Especially, the surface tension values of that combined APG/4a can be reduced to 17.31 mN/m. The excellent surface activities and their remarkable compatibility to various types of hydrocarbon surfactants make them as sustainable alternatives to PFOA （perfluorooctanoic acid, C7F15CO2H） and PFOS （perfluorooctane sulphonate, C8F17SO3X, with X = K, Na, H）.展开更多
基金supported by Ministry of Economy and Competitiveness,Spain(MINECO),grant number BFU2012-37304by Junta de Andalucía,Spain,grant number P12-CTS-2064
文摘Bromodomain containing 2 （Brd2） protein belongs to the Bromodomains and Extra Terminal domain （BET） family of chromatin adaptors characterized by the presence of two N-terminal tandem bromodomains and an exclusive C-terminal extra terminal domain （ET） （Belkina and Denis, 2012; Shi and Vakoc, 2014）. Bromodomains are involved in recognizing acetylated histone tails and other acetylated proteins while the ET domain has been implicated in protein-protein interaction.
文摘UNDER blue Beijing skies November＇s Asia-Pacific Economic Cooperation （APEC） Summit 2014 made a firm statement in the fight against the Ebola epidemic. The deadly disease was one of the central topics President Xi Jinping and President Barack Obama discussed during their bilateral talks on the sidelines of the APEC Informal Leaders＇ Meeting.
文摘Kremlin boosts its profile with strengthened antiterrorist drive Vladimir Putin may well breathe a sigh of relief when hearing the news that Chechen rebel leader Shamil Basayev was killed. In recent years, fighting against terrorism has been weighing heavily on the mind of the Russian president. Only a couple of days earlier.
文摘SUN Baiqiu liked to read well known literature from all over the world when she was a little girl. She sympathized with the good-hearted characters and hated the greedy and the evil. She imagined that she would become like a fairy godmother, holding a magic wand and helping the poor but kind people in distress. In 1963 she graduated from
文摘With a commitment to reduce emissions,and its investment in green technology bringing down global costs,China is emerging as the leader in fighting climate change.EVERYBODY knows that our world is getting hotter.They also know why.Pumping out pollutants has transformed our world into a greenhouse;heat from the sun is now trapped by a“dirty”atmosphere.
基金supported by the University of Ottawa and a NSERC Discovery grant(DGECR-2019-00289,RGPIN-2019-05000)the National Geographic Society,the University of California Los Angeles(Faculty Senate and Division of Life Sciences),an RMBL research fellowship,and the U.S.National Science Foundation(NSF IDBR-0754247 and DEB-1119660 and 1557130 to D.T.B.,as well as DBI 0242960,07211346,1226713,and 1755522 to RMBL).
文摘Climate change and its resulting effects on seasonality are known to alter a variety of animal behaviors including those related to foraging,phenology,and migration.Although many studies focus on the impacts of phenological changes on physiology or ftness enhancing behaviors,fewer have investigated the relationship between variation in weather and phenology on risk assessment.Fleeing from predators is an economic decision that incurs costs and benefts.As environmental conditions change,animals may face additional stressors that affect their decision to fee and infuence their ability to effectively assess risk.Flight initiation distance(FID)—the distance at which animals move away from threats—is often used to study risk assessment.FID varies due to both internal and external biotic and physical factors as well as anthropogenic activities.We asked whether variation in weather and phenology is associated with risk-taking in a population of yellow-bellied marmots(Marmota faviventer).As the air temperature increased marmots tolerated closer approaches,suggesting that they either perceived less risk or that their response to a threat was thermally compromised.The effect of temperature was relatively small and was largely dependent upon having a larger range in the full data set that permitted us to detect it.We found no effects of either the date that snow disappeared or July precipitation on marmot FID.As global temperatures continue to rise,rainfall varies more and drought becomes more common,understanding climate-related changes in how animals assess risk should be used to inform population viability models.
文摘A lawmaker from Yucun Village in east China is fighting plastic pollution with a novel weapon and roping in young entrepreneurs as partners.WHEN lawmaker Wang Yucheng came to Beijing to attend the"two sessions"in March,he brought something unusual with him all the way from home.It was a pencil box containing several pencils.But it was no ordinary pencil box.It was his weapon to fight environmental degradation.
文摘A brand new method of automatic north seeking/sight stabilizing is introduced for usage in land fighting vehicles such as tank, etc. Some inertial devices are installed additionally on the platform along with relative control circuits to make its function of North seeking possible. Double position calculation is adopted in this method, and by alignment at two sites the azimuth angle can be figured out. Also the orientation and the horizontal shifts of the gyro are simultaneously measured and compensated so as to improve the accuracy of north seeking. The system can automatically seek north when the vehicle is immobile. And the time consumption is no more than 5.5 min. Besides, the system can keep azimuth angle and provide tilt angle and pitch angle of the vehicle.
文摘The paper described a newly developed high performance compressed air foam system(CAFS). The effective system generates uniform foam w ith greater momentum by injecting compressed air into flowing foam solution. Foa m generated by this system presented superior viscous and wetting properties to water.A pendulum system was designed to measure yield stress of foam. The results pro ved the existence of yield stress of foam. And the increasing tendency of yield stress with gas fraction and bubble size has also been found out.
文摘The objectives of this study arc： first, to obtain a description that a political party website is an effective means of communication to carry out socialization programs to members ofthc party or the party＇s virtual public; second, to obtain a description that websitc is a useful means to give political education about people＇s political rights; third, to explore the implication of web＇s content for strengthening the political party＇s identity. The research approach used was interpretive approach to qualitative-descriptive methods. Interpretive method emphasizes culture from the perspective of social construction theory （Papa, Danicls, ＆ Spiker, 2008）. Data collection （Mann ＆ Stewart, 2000） conducted through site analysis of the People Justice＇s Party （Parti Kcadilan Rakyat） Malaysia website from January 16 to March 31 2010. The findings of this study arc the website is an effective means to disseminate political party＇s program. Although, the virtual public or party members were preferring a direct face-to-face interpersonal communication. The People Justice＇s Party, Malaysia has 14 MPN （Majclis Pimpinan Negeri/Rcgional Board） in the state-level. Regarding the political atmosphere in Malaysia, the wcbsite was an efficient tool. The costs required were very cheap. Second, the presence of party website opened a space for providing political education to more people. Third, the public responses stimulated improvement and strengthening the political party＇s identity.
文摘Jane Eyre,rebellious woman in the Victorian Age,holds her remarkable status in the English literature as the one who dare to fight against the patriarchal society.Unlike her contemporaries,Jane Eyre believes that men and women are born to be equal and women should never be tamed by the male-centered world or feminist ego.Under the tremendous pressure,she still guards her own dignity and determines to achieve self-actualization instead of being an accessory of men.It’s her female consciousness that lead her to be an unusual figure that enjoys both the financial self-reliance and social equality.Self-respect,selfreliance and self-actualization comprise Jane’s female consciousness that is instructive to women and worths a further exploration.
基金Project supported by the National Basic Research Program of China(2004CB2178062005CB221402)+1 种基金the National NaturalScience Foundation of China(20373043)Young Scientists Innovation Foundation of CNPC(04E7025)
文摘The effects of rare earth（RE）on the structure,acidity,and catalytic performance of HZSM-5 zeolite were investigated.A series of RE/HZSM-5 catalysts,containing 7.54% RE（RE=La,Ce,Pr,Nd,Sm,Eu or Gd）,were prepared by the impregnation of the ZSM-5 type zeolites（Si/Al=64：1）with the corresponding RE nitrate aqueous solutions.The catalysts were characterized by means of FT-IR,UV-Vis,NH3-TPD,and IR spectroscopy of adsorbed pyridine.The catalytic performances of the RE/HZSM-5 for the catalytic cracking of mixed butane to light olefins were also measured with a fixed bed microreactor.The results revealed that the addition of light rare earth metal on the HZSM-5 catalyst greatly enhanced the selectivity to olefins,especially to propylene,thus increasing the total yield of olefins in the catalytic cracking of butane.Among the RE-modified HZSM-5 samples,Ce/HZSM-5 gave the highest yield of total olefins,and Nd/HZSM-5 gave the highest yield of propene at a reaction temperature of 600℃.The presence of rare earth metal on the HZSM-5 sample,not only modified the acidic properties of HZSM-5 including the amount of acid sites and acid type,that is,the ratio of L/B（Lewis acid/Brnsted acid）,but also altered the basic properties of it,which in turn promoted the catalytic performance of HZSM-5 for the catalytic cracking of butane.
基金supported by the National Natural Science Foundation of China (No. 2167020782)the Science and Technology Commission of Shanghai Municipality (No. 15DZ2281500)
文摘Three novel fluorinated cationic surfactants were prepared by adopting perfluoro-2-methy1-2-pentene as raw substrate. The as-obtained fluorinated cationic surfactants exhibited excellent surface properties, all of them can reduce the surface tension of water to below 20.00mN/m at the critical micelle concentrations （CMC）. The incorporation of SDS, AOS, APG or LAB into 2-（4-（3,3,4,4,5,5,5-heptafluoro- 2,2-bis（trifluoromethyl）pentyl）benzamido）-N,N-dimethylethana-mine oxide 4a could generate much lower CMC and surface tension value at the CMC than individual 4a. Especially, the surface tension values of that combined APG/4a can be reduced to 17.31 mN/m. The excellent surface activities and their remarkable compatibility to various types of hydrocarbon surfactants make them as sustainable alternatives to PFOA （perfluorooctanoic acid, C7F15CO2H） and PFOS （perfluorooctane sulphonate, C8F17SO3X, with X = K, Na, H）.
