Traffic intersections are incredibly dangerous for drivers and pedestrians. Statistics from both Canada and the U.S. show a high number of fatalities and serious injuries related to crashes at intersections. In Canada...Traffic intersections are incredibly dangerous for drivers and pedestrians. Statistics from both Canada and the U.S. show a high number of fatalities and serious injuries related to crashes at intersections. In Canada, during 2019, the National Collision Database shows that 28% of traffic fatalities and 42% of serious injuries occurred at intersections. Likewise, the U.S. National Highway Traffic Administration (NHTSA) found that about 40% of the estimated 5,811,000 accidents in the U.S. during the year studied were intersection-related crashes. In fact, a major survey by the car insurance industry found that nearly 85% of drivers could not identify the correct action to take when approaching a yellow traffic light at an intersection. One major reason for these accidents is the “yellow light dilemma,” the ambiguous situation where a driver should stop or proceed forward when unexpectedly faced with a yellow light. This situation is even further exacerbated by the tendency of aggressive drivers to inappropriately speed up on the yellow just to get through the traffic light. A survey of Canadian drivers conducted by the Traffic Injury Research Foundation found that 9% of drivers admitted to speeding up to get through a traffic light. Another reason for these accidents is the increased danger of making a left-hand turn on yellow. According to the National Highway Traffic Safety Association (NHTSA), left turns occur in approximately 22.2% of collisions—as opposed to just 1.2% for right turns. Moreover, a study by CNN found left turns are three times as likely to kill pedestrians than right turns. The reason left turns are so much more likely to cause an accident is because they take a driver against traffic and in the path of oncoming cars. Additionally, most of these left turns occur at the driver’s discretion—as opposed to the distressingly brief left-hand arrow at busy intersections. Drive Safe Now proposes a workable solution for reducing the number of accidents occurring during a yellow light at intersections. We believe this fairly simple solution will save lives, prevent injuries, reduce damage to public and private property, and decrease insurance costs.展开更多
Based on the interpersonal function in Halliday’s systemic functional grammar,"Miranda Warnings",the typical English Police Caution,is analyzed from the aspects of Mood system,Modality system and Appraisal ...Based on the interpersonal function in Halliday’s systemic functional grammar,"Miranda Warnings",the typical English Police Caution,is analyzed from the aspects of Mood system,Modality system and Appraisal system,with the aim of exploring its interpersonal meanings.Results show that:first,the declarative mood and interrogative mood used in the police caution protect the legitimate rights of the interrogated;second,the widely use of Low value modal verbs demonstrates a more humane and democratic legislation principle;and third,the absence of Affect resources and the frequent application of Capacity resources narrow the interpersonal distance between policeman and the interrogated,reflecting the transformation in policeman’s interrogation practices.展开更多
It is noticeable that nowadays there are more and more scientists with physical science or engineering background working on or started to work on biomedical projects, but rarely vice versa. This reflects the multi-di...It is noticeable that nowadays there are more and more scientists with physical science or engineering background working on or started to work on biomedical projects, but rarely vice versa. This reflects the multi-discipline nature of some projects, however, also at least partially can be explained that biomedical research is seen as trendy, fundable, and likely to get more citations and with results more publishable in high impact journals （1,2）. It is also apparent with some publications and lectures that not all these physical scientists/engineers are well-prepared to work on projects which do not align with their own expertise. Some studies are against very basic principles of pharmacology or biology, while others try to solve medical problems which do not exist clinically. I reviewed a number of submissions including a few from prestigious American universities to Nature journals which made no sense with the study design. Much of manpower and financial resource are being wasteful spent. There are also examples of clinical trials which were ill-planned right from the start and in the end only causing much inconvenience to patients to say at the least. In addition, ample examples exist where experienced physical scientists worked with inexperienced medical scientists and resulted in avoidable failures.展开更多
BACKGROUND Electrosurgical smoke could be different by the device of cutting or the type of tissue that is being cut.AIM To analyze the electrocautery smoke released from the tissues that are frequently cut in orthope...BACKGROUND Electrosurgical smoke could be different by the device of cutting or the type of tissue that is being cut.AIM To analyze the electrocautery smoke released from the tissues that are frequently cut in orthopedic surgeries.METHODS The released smoke from electrocautery of five different tissue types(meniscus,ligament,adipose,muscle,and synovium)of five patients who underwent total knee arthroplasty were collected and analyzed for volatile organic compounds(VOCs)and 27 candidate polycyclic aromatic hydrocarbons(n=25).Surgical smoke was produced with an electrocautery device for 4 min.RESULTS None of the 27 evaluated polycyclic aromatic hydrocarbons compounds were detectable in electrocautery smoke collected from the surgical cutting of the different tissues.The number and identity of detected VOCs were similar between the patients but not between tissue types.The number of detected VOCs was the highest in synovial tissue(n=21)and the lowest in the meniscus and adipose tissue(n=12).The number of toxic and/or carcinogenic VOCs were the most in the muscle and meniscus tissues(Toluene,Ethylbenzene,and Styrene).No toxic and/or carcinogenic VOCs were identified in the ligament and adipose tissue.CONCLUSION Meniscus and muscle tissue are associated with the highest number of toxic and/or carcinogenic VOCs.Therefore,we recommend that surgeons avoiding the electrocautery of these tissues.展开更多
When the global downturn hit China last year, 30 million migrants lost their jobs, many of them had been working in the Pearl River Delta, called the 'world’s factory floor' because
本文对儿童体育运动提出了警告,很有现实意义。儿童不宜过早地投入某专项体育运动。为什么?本文有一句话,说得委婉,却值得深思: Those who participate in a variety of sports and specialize only after reachingthe age of pubergy(...本文对儿童体育运动提出了警告,很有现实意义。儿童不宜过早地投入某专项体育运动。为什么?本文有一句话,说得委婉,却值得深思: Those who participate in a variety of sports and specialize only after reachingthe age of pubergy(青春期)tend to be more consistent performers,have fewerinjuries and adhere to sports play longer than those who specialize early. 为什么会强迫儿童从事某项专门的体育训练?文章透露的原因令人悲从中来: Children and their parents are motivated to commit to such training by thelure(诱惑)of college scholarships and professional careers,the report said. 本文的另一精彩处是对为何儿童不宜过早投入专项体育训练作了生理原因的分析,令人信服。读者不妨细读。 Children need to be children.此话说得何等好啊！展开更多
文摘Traffic intersections are incredibly dangerous for drivers and pedestrians. Statistics from both Canada and the U.S. show a high number of fatalities and serious injuries related to crashes at intersections. In Canada, during 2019, the National Collision Database shows that 28% of traffic fatalities and 42% of serious injuries occurred at intersections. Likewise, the U.S. National Highway Traffic Administration (NHTSA) found that about 40% of the estimated 5,811,000 accidents in the U.S. during the year studied were intersection-related crashes. In fact, a major survey by the car insurance industry found that nearly 85% of drivers could not identify the correct action to take when approaching a yellow traffic light at an intersection. One major reason for these accidents is the “yellow light dilemma,” the ambiguous situation where a driver should stop or proceed forward when unexpectedly faced with a yellow light. This situation is even further exacerbated by the tendency of aggressive drivers to inappropriately speed up on the yellow just to get through the traffic light. A survey of Canadian drivers conducted by the Traffic Injury Research Foundation found that 9% of drivers admitted to speeding up to get through a traffic light. Another reason for these accidents is the increased danger of making a left-hand turn on yellow. According to the National Highway Traffic Safety Association (NHTSA), left turns occur in approximately 22.2% of collisions—as opposed to just 1.2% for right turns. Moreover, a study by CNN found left turns are three times as likely to kill pedestrians than right turns. The reason left turns are so much more likely to cause an accident is because they take a driver against traffic and in the path of oncoming cars. Additionally, most of these left turns occur at the driver’s discretion—as opposed to the distressingly brief left-hand arrow at busy intersections. Drive Safe Now proposes a workable solution for reducing the number of accidents occurring during a yellow light at intersections. We believe this fairly simple solution will save lives, prevent injuries, reduce damage to public and private property, and decrease insurance costs.
文摘Based on the interpersonal function in Halliday’s systemic functional grammar,"Miranda Warnings",the typical English Police Caution,is analyzed from the aspects of Mood system,Modality system and Appraisal system,with the aim of exploring its interpersonal meanings.Results show that:first,the declarative mood and interrogative mood used in the police caution protect the legitimate rights of the interrogated;second,the widely use of Low value modal verbs demonstrates a more humane and democratic legislation principle;and third,the absence of Affect resources and the frequent application of Capacity resources narrow the interpersonal distance between policeman and the interrogated,reflecting the transformation in policeman’s interrogation practices.
文摘It is noticeable that nowadays there are more and more scientists with physical science or engineering background working on or started to work on biomedical projects, but rarely vice versa. This reflects the multi-discipline nature of some projects, however, also at least partially can be explained that biomedical research is seen as trendy, fundable, and likely to get more citations and with results more publishable in high impact journals （1,2）. It is also apparent with some publications and lectures that not all these physical scientists/engineers are well-prepared to work on projects which do not align with their own expertise. Some studies are against very basic principles of pharmacology or biology, while others try to solve medical problems which do not exist clinically. I reviewed a number of submissions including a few from prestigious American universities to Nature journals which made no sense with the study design. Much of manpower and financial resource are being wasteful spent. There are also examples of clinical trials which were ill-planned right from the start and in the end only causing much inconvenience to patients to say at the least. In addition, ample examples exist where experienced physical scientists worked with inexperienced medical scientists and resulted in avoidable failures.
文摘BACKGROUND Electrosurgical smoke could be different by the device of cutting or the type of tissue that is being cut.AIM To analyze the electrocautery smoke released from the tissues that are frequently cut in orthopedic surgeries.METHODS The released smoke from electrocautery of five different tissue types(meniscus,ligament,adipose,muscle,and synovium)of five patients who underwent total knee arthroplasty were collected and analyzed for volatile organic compounds(VOCs)and 27 candidate polycyclic aromatic hydrocarbons(n=25).Surgical smoke was produced with an electrocautery device for 4 min.RESULTS None of the 27 evaluated polycyclic aromatic hydrocarbons compounds were detectable in electrocautery smoke collected from the surgical cutting of the different tissues.The number and identity of detected VOCs were similar between the patients but not between tissue types.The number of detected VOCs was the highest in synovial tissue(n=21)and the lowest in the meniscus and adipose tissue(n=12).The number of toxic and/or carcinogenic VOCs were the most in the muscle and meniscus tissues(Toluene,Ethylbenzene,and Styrene).No toxic and/or carcinogenic VOCs were identified in the ligament and adipose tissue.CONCLUSION Meniscus and muscle tissue are associated with the highest number of toxic and/or carcinogenic VOCs.Therefore,we recommend that surgeons avoiding the electrocautery of these tissues.
文摘When the global downturn hit China last year, 30 million migrants lost their jobs, many of them had been working in the Pearl River Delta, called the 'world’s factory floor' because
文摘本文对儿童体育运动提出了警告,很有现实意义。儿童不宜过早地投入某专项体育运动。为什么?本文有一句话,说得委婉,却值得深思: Those who participate in a variety of sports and specialize only after reachingthe age of pubergy(青春期)tend to be more consistent performers,have fewerinjuries and adhere to sports play longer than those who specialize early. 为什么会强迫儿童从事某项专门的体育训练?文章透露的原因令人悲从中来: Children and their parents are motivated to commit to such training by thelure(诱惑)of college scholarships and professional careers,the report said. 本文的另一精彩处是对为何儿童不宜过早投入专项体育训练作了生理原因的分析,令人信服。读者不妨细读。 Children need to be children.此话说得何等好啊！
