AIM: To compare the atrio-ventricular(AV/PV) delay optimization by echocardiography and intra-cardiac electrocardiogram(IEGM) based Quick Opt algorithm in complete heart block(CHB) patients, implanted with a dual cham...AIM: To compare the atrio-ventricular(AV/PV) delay optimization by echocardiography and intra-cardiac electrocardiogram(IEGM) based Quick Opt algorithm in complete heart block(CHB) patients, implanted with a dual chamber pacemaker. METHODS: We prospectively enrolled 20 patients(age 59.45 ± 18.1 years; male: 65%) with CHB, who were implanted with a dual chamber pacemaker. The left ventricular outflow tract velocity time-integral was measured after AV/PV delay optimization by both echocardiography and Quick Opt algorithm method. Bland-Altman analysis was used for agreement between the two techniques. RESULTS: The optimal AV and PV delay determined by echocardiography was 155.5 ± 14.68 ms and 122.5 ± 17.73 ms(P < 0.0001), respectively and by Quick Opt method was 167.5 ± 16.73 and 117.5 ms ± 9.10 ms(P < 0.0001), respectively. A good agreement was observed between optimal AV and PV delay as measured by two methods. However, the correlation of the optimal AV(r = 0.0689, P = 0.77) and PV(r = 0.2689, P = 0.25) intervals measured by the two techniques was poor. The time required for AV/PV optimization was 45.26 ± 1.73 min by echocardiography and 0.44 ± 0.08 min by Quick Opt method(P < 0.0001).CONCLUSION: The programmer based IEGM method is an automated, quick, easier and reliable alternative to echocardiography for the optimization of AV/PV delay in CHB patients, implanted with a dual chamber pacemaker.展开更多
When it comes to delivering extraordinary presentations,few could compete with Steve Jobs.“Steve was a natural,”according to Bill Gates on a recent episode of the podcast Armchair Expert With Dax Shepard.Since I wro...When it comes to delivering extraordinary presentations,few could compete with Steve Jobs.“Steve was a natural,”according to Bill Gates on a recent episode of the podcast Armchair Expert With Dax Shepard.Since I wrote one of the most popular books on Steve Jobs's presentation style,my ears perked up when Gates called Jobs a“natural.”I know that Jobs improved over time because he practiced over and over.展开更多
We all love to move to music.At the very leat,we cannot help tapping^(2) our foot or nodding our head when we hear music.New research suggests that moving our body to musical beats is genetic.Our dancing ability is in...We all love to move to music.At the very leat,we cannot help tapping^(2) our foot or nodding our head when we hear music.New research suggests that moving our body to musical beats is genetic.Our dancing ability is in our genes.Parents pass their sense of rhythm^(3) down to their children.The study is from the Vanderbilt University in the USA.Researchers found 69 genes that affect how people react to musical rhythms.The researchers said different genes affect our ability to move in synchrony^(4) with music beats.They said the genes work in similar ways to those for other biological rhythms,such as breathing,walking and sleeping.展开更多
主题语境:野生动物保护篇幅:347词建议用时:6分钟。1 Sabina Nowak made a howl,which filled the moonlit valley and died away.The slight young woman with a knapsack stood quietly and listened.Nothing.Then,she howled once mo...主题语境:野生动物保护篇幅:347词建议用时:6分钟。1 Sabina Nowak made a howl,which filled the moonlit valley and died away.The slight young woman with a knapsack stood quietly and listened.Nothing.Then,she howled once more.This time she heard an answering howl.Sabina Nowak sighed happily,“My big bad boys are safe for another year.”展开更多
In the evening,Wang Zikun was sitting on the sofa reading a book when he heard a knock at the door.He opened it to find his aunt,the younger sister of his father,standing there.She was dressed in an off-white trench c...In the evening,Wang Zikun was sitting on the sofa reading a book when he heard a knock at the door.He opened it to find his aunt,the younger sister of his father,standing there.She was dressed in an off-white trench coat,holding a bouquet of yellow lilies in her left hand and a small suitcase in her right,standing in the doorway.展开更多
On April 18,a new artist debuted on Spotify and other streaming platforms,though Teaching you've definitely heard her sounds before-whether ocean waves,birdsong or the thrum of falling rain.That artist is nature,a...On April 18,a new artist debuted on Spotify and other streaming platforms,though Teaching you've definitely heard her sounds before-whether ocean waves,birdsong or the thrum of falling rain.That artist is nature,and streaming her songs will help fund conservation.展开更多
Through the introduction of the American poem "I Hear America Singing" and its writer Walt Whitman, the Chinese poem " 春望 "and its writer:杜甫, and the comparison of these two poems in prosody, l...Through the introduction of the American poem "I Hear America Singing" and its writer Walt Whitman, the Chinese poem " 春望 "and its writer:杜甫, and the comparison of these two poems in prosody, language, contents and emotion, writing techniques, political views field, etc, this essay analyses further some poetic phenomenon, and also draws a vivid picture of America in 19 century and China in 8 century.展开更多
Mr.and Mrs.King have lived in our town for nearly twenty years.They have a bookshop by the bus station.They’re 1 to everybody and have a lot of friends.They often 2 the poor students and sell them some books cheaply....Mr.and Mrs.King have lived in our town for nearly twenty years.They have a bookshop by the bus station.They’re 1 to everybody and have a lot of friends.They often 2 the poor students and sell them some books cheaply.So there’re many people in their shop.Of course people 3 them and their friends often call on them and 4 them.We can always hear their rooms are full of 5 and quarrels.展开更多
Dear Big Mouth English readers,Happy New Year!Some words sound the same.We may be confused when we hear them.Well,atleast Jason is.Jason is playing in the garden.He hears Mum calling him.
Two-order morphology of rock joints named as waviness and unevenness can be separated by morphology classification method,which plays a decisive role in the evolution of shear stress during the shear test.The joint mo...Two-order morphology of rock joints named as waviness and unevenness can be separated by morphology classification method,which plays a decisive role in the evolution of shear stress during the shear test.The joint morphology is obtained by using 3D printing and 3D laser scanning techniques and the joint model samples in two-order morphology are produced by cement mortar.Then,shear tests are performed under different normal loads.Results shows that the waviness is dominant in the total morphology during the shear test,and the shear contribution of unevenness mainly occurs in the climbing phase of shearing process.Comparing the failure modes of two-order morphology,waviness mainly embodies shear dilation characteristics and unevenness mainly shows shear wear characteristics.Based on this,a quantitative parameter is proposed to represent the ratio of the peak shear strength of the two-order morphology to that of total morphology.The functional relationship between the peak shear strength of total and two-order morphologies is determined,providing a theoretical method for further in-depth study on the shear strength of the interaction with two-order morphology of rock joints.展开更多
On the morning of 3 July,Zhou Hongwei,Party branch secretary of Huangnidun Village,visited Zhou Wenping’s home to hear the family’s suggestions regarding the village’s plan to install more street lamps and upgrade ...On the morning of 3 July,Zhou Hongwei,Party branch secretary of Huangnidun Village,visited Zhou Wenping’s home to hear the family’s suggestions regarding the village’s plan to install more street lamps and upgrade public water pipelines.After their meeting,Zhou immediately headed to another family for their opinions.展开更多
文摘AIM: To compare the atrio-ventricular(AV/PV) delay optimization by echocardiography and intra-cardiac electrocardiogram(IEGM) based Quick Opt algorithm in complete heart block(CHB) patients, implanted with a dual chamber pacemaker. METHODS: We prospectively enrolled 20 patients(age 59.45 ± 18.1 years; male: 65%) with CHB, who were implanted with a dual chamber pacemaker. The left ventricular outflow tract velocity time-integral was measured after AV/PV delay optimization by both echocardiography and Quick Opt algorithm method. Bland-Altman analysis was used for agreement between the two techniques. RESULTS: The optimal AV and PV delay determined by echocardiography was 155.5 ± 14.68 ms and 122.5 ± 17.73 ms(P < 0.0001), respectively and by Quick Opt method was 167.5 ± 16.73 and 117.5 ms ± 9.10 ms(P < 0.0001), respectively. A good agreement was observed between optimal AV and PV delay as measured by two methods. However, the correlation of the optimal AV(r = 0.0689, P = 0.77) and PV(r = 0.2689, P = 0.25) intervals measured by the two techniques was poor. The time required for AV/PV optimization was 45.26 ± 1.73 min by echocardiography and 0.44 ± 0.08 min by Quick Opt method(P < 0.0001).CONCLUSION: The programmer based IEGM method is an automated, quick, easier and reliable alternative to echocardiography for the optimization of AV/PV delay in CHB patients, implanted with a dual chamber pacemaker.
文摘When it comes to delivering extraordinary presentations,few could compete with Steve Jobs.“Steve was a natural,”according to Bill Gates on a recent episode of the podcast Armchair Expert With Dax Shepard.Since I wrote one of the most popular books on Steve Jobs's presentation style,my ears perked up when Gates called Jobs a“natural.”I know that Jobs improved over time because he practiced over and over.
文摘We all love to move to music.At the very leat,we cannot help tapping^(2) our foot or nodding our head when we hear music.New research suggests that moving our body to musical beats is genetic.Our dancing ability is in our genes.Parents pass their sense of rhythm^(3) down to their children.The study is from the Vanderbilt University in the USA.Researchers found 69 genes that affect how people react to musical rhythms.The researchers said different genes affect our ability to move in synchrony^(4) with music beats.They said the genes work in similar ways to those for other biological rhythms,such as breathing,walking and sleeping.
文摘主题语境:野生动物保护篇幅:347词建议用时:6分钟。1 Sabina Nowak made a howl,which filled the moonlit valley and died away.The slight young woman with a knapsack stood quietly and listened.Nothing.Then,she howled once more.This time she heard an answering howl.Sabina Nowak sighed happily,“My big bad boys are safe for another year.”
文摘In the evening,Wang Zikun was sitting on the sofa reading a book when he heard a knock at the door.He opened it to find his aunt,the younger sister of his father,standing there.She was dressed in an off-white trench coat,holding a bouquet of yellow lilies in her left hand and a small suitcase in her right,standing in the doorway.
文摘On April 18,a new artist debuted on Spotify and other streaming platforms,though Teaching you've definitely heard her sounds before-whether ocean waves,birdsong or the thrum of falling rain.That artist is nature,and streaming her songs will help fund conservation.
文摘Through the introduction of the American poem "I Hear America Singing" and its writer Walt Whitman, the Chinese poem " 春望 "and its writer:杜甫, and the comparison of these two poems in prosody, language, contents and emotion, writing techniques, political views field, etc, this essay analyses further some poetic phenomenon, and also draws a vivid picture of America in 19 century and China in 8 century.
文摘Mr.and Mrs.King have lived in our town for nearly twenty years.They have a bookshop by the bus station.They’re 1 to everybody and have a lot of friends.They often 2 the poor students and sell them some books cheaply.So there’re many people in their shop.Of course people 3 them and their friends often call on them and 4 them.We can always hear their rooms are full of 5 and quarrels.
文摘Dear Big Mouth English readers,Happy New Year!Some words sound the same.We may be confused when we hear them.Well,atleast Jason is.Jason is playing in the garden.He hears Mum calling him.
基金funded by National Natural Science Foundation of China(Grant Nos.42272333 and 42277147)。
文摘Two-order morphology of rock joints named as waviness and unevenness can be separated by morphology classification method,which plays a decisive role in the evolution of shear stress during the shear test.The joint morphology is obtained by using 3D printing and 3D laser scanning techniques and the joint model samples in two-order morphology are produced by cement mortar.Then,shear tests are performed under different normal loads.Results shows that the waviness is dominant in the total morphology during the shear test,and the shear contribution of unevenness mainly occurs in the climbing phase of shearing process.Comparing the failure modes of two-order morphology,waviness mainly embodies shear dilation characteristics and unevenness mainly shows shear wear characteristics.Based on this,a quantitative parameter is proposed to represent the ratio of the peak shear strength of the two-order morphology to that of total morphology.The functional relationship between the peak shear strength of total and two-order morphologies is determined,providing a theoretical method for further in-depth study on the shear strength of the interaction with two-order morphology of rock joints.
文摘On the morning of 3 July,Zhou Hongwei,Party branch secretary of Huangnidun Village,visited Zhou Wenping’s home to hear the family’s suggestions regarding the village’s plan to install more street lamps and upgrade public water pipelines.After their meeting,Zhou immediately headed to another family for their opinions.
