A method developed for the screening of diethylene glycol (DEG) in toothpaste was released by the FDA in 2007. This method could not only quantify the DEG but also confirm if any potential interfering peak is pre- sen...A method developed for the screening of diethylene glycol (DEG) in toothpaste was released by the FDA in 2007. This method could not only quantify the DEG but also confirm if any potential interfering peak is pre- sent. However, disadvantages of this method such as intermittent shortages of the key reagent acetonitrile and the shorter than expected column-life issues have prompted a search for alternative solutions. An im- provement with an alternate “greener” extraction solvent is presented, and the method comparison and vali- dation are described in this article. The greener extraction solvent, ethanol with limited water, provided a better efficiency for the toothpaste sampling procedures. The limit of detection (LOD) and limit of quantita- tion (LOQ) are 0.0025% and 0.0084% in (w/w) unit, respectively. The sample recovery is 101.2%.展开更多
IN the age of rapid economic development, green living has become a lifestyle pursued by most Chinese. The green and eco-friendly consumption concept is being integrated into people’s daily lives, making life more co...IN the age of rapid economic development, green living has become a lifestyle pursued by most Chinese. The green and eco-friendly consumption concept is being integrated into people’s daily lives, making life more comfortable and diverse. Green Restaurants Born in the 1990s, Liu Chang, a white collar employee of a foreign company, is a serious foodie. She has tried various restaurants in Beijing because of her love for food, but her favorites are the green restaurants.展开更多
The Sliding Bike is a patented new product that perfectly combines bike functionality and mechanical principles.Our models before 2014 used only horizontal sliding mechanism,and they were awarded invention golden meda...The Sliding Bike is a patented new product that perfectly combines bike functionality and mechanical principles.Our models before 2014 used only horizontal sliding mechanism,and they were awarded invention golden medals in Seoul,Geneva,Pittsburgh,and Taipei,and the Japan GD展开更多
Organized by Eurovet, the world’s leading lingerie and beachwear trade show organizer and supported by Hong Kong Intimate Apparel and Industries’ Association (HKIAIA), the fifth Interfilière Hong Kong –
Low-carbon lifestyles and business operations are gaining popularity as China pushes for more intense green efforts across the country In the global fight against climate change, China has always been at the forefront...Low-carbon lifestyles and business operations are gaining popularity as China pushes for more intense green efforts across the country In the global fight against climate change, China has always been at the forefront, making pushes into wind and hydropower to offer relief from its reliance on展开更多
The 19th National Congress of the Communist Party of China(CPC)will be held in Beijing on October 18.Led by the strong leadership of the CPC Central Committee with Xi Jinping at the core,China has made extraordinary a...The 19th National Congress of the Communist Party of China(CPC)will be held in Beijing on October 18.Led by the strong leadership of the CPC Central Committee with Xi Jinping at the core,China has made extraordinary achievements both at home and on the world stage since the 18th CPC National Congress was held in November 2012.展开更多
For those living in the Northern Hemisphere,now is the best season to plant a tree.On March 12,China’s 40th annual Tree Planting Day,schools,families and work units organized greening rituals,with temperature climbin...For those living in the Northern Hemisphere,now is the best season to plant a tree.On March 12,China’s 40th annual Tree Planting Day,schools,families and work units organized greening rituals,with temperature climbing and the frozen ground thawing.Awareness of the importance of tree planting growing over the past decades,it is no surprise that NASA released a report in February,announcing that the world is literally a greener place because of China.展开更多
The greening of urban areas is im-proving as more cities step up efforts toplant trees. The average green cover has in-creased to one fifth of the aggregate urbanexpanse, with every urban resident en-
Transformation to sustainable business improves a county’s prospects Han Guocheng used to feel guilty and worry about being punished as his firm engaged in resource exploitation.These days though,having transitioned ...Transformation to sustainable business improves a county’s prospects Han Guocheng used to feel guilty and worry about being punished as his firm engaged in resource exploitation.These days though,having transitioned from gold digger to environment protector over the past decade,he feels at ease."Now I earn only 15 percent of my former income,but frankly speaking,I feel more展开更多
President Xi Jinping joins a tree planting activity in an eastern suburb of Beijing on April 2.Afforestation has long been a fine tradition of the Chinese nation,and the event was a concrete action in building a beaut...President Xi Jinping joins a tree planting activity in an eastern suburb of Beijing on April 2.Afforestation has long been a fine tradition of the Chinese nation,and the event was a concrete action in building a beautiful China,advancing ecological conservation and improving people’s livelihood,Xi said.展开更多
In the past year, extreme weather events have erupted across the globe, and 2010 looks to be one of the hottest years in recorded history. That has placed an onus on the Cancun conference to
More than six decades after the establishment of diplomatic relations, China and Finland are finding new opportunities in the environmental business. Finland’s cutting-edge energy efficiency and renewable energy tech...More than six decades after the establishment of diplomatic relations, China and Finland are finding new opportunities in the environmental business. Finland’s cutting-edge energy efficiency and renewable energy technologies could help China achieve its environmental protection goals,展开更多
选注者言:最近,我也加入了“驾车一族”,我的小别克让我饱尝“飞驰”之乐。因此,我也更关心汽车的前景。本文向我们透露了许多研发新型汽车的最新消息。美国布什政府对研发氢燃料电池驱动的汽车的费用投入达12亿美元。但是,此消息刚刚宣...选注者言:最近,我也加入了“驾车一族”,我的小别克让我饱尝“飞驰”之乐。因此,我也更关心汽车的前景。本文向我们透露了许多研发新型汽车的最新消息。美国布什政府对研发氢燃料电池驱动的汽车的费用投入达12亿美元。但是,此消息刚刚宣布,MIT的研究就提出氢燃料电池驱动的汽车的不足:…uses sub-stantial energy and emits greenhouse gases.一种更环保更科学的汽车(hybrid cars/复合车)在日本的丰田和本田公司已经被投入生产。展开更多
我是内蒙古大学的学生,上网浏览,读到这一条消息,非常兴奋。我们地区多年来治沙造林,造林防沙的工作取得了喜人的成绩。此短文告诉我们:satellite data show plants have been growing more vigorously since 1981。我特别高兴看到Beij...我是内蒙古大学的学生,上网浏览,读到这一条消息,非常兴奋。我们地区多年来治沙造林,造林防沙的工作取得了喜人的成绩。此短文告诉我们:satellite data show plants have been growing more vigorously since 1981。我特别高兴看到Beijing的字样。但是该消息又称:One suspected cause is risingtemperatures,possibly linked to the buildup of greenhouse gases in he atmosphere。我想对此句分析添加一词:forestation(人工造林)。展开更多
In this study, the gamma radiation shielding features of several environmentally friendly materials were investigated. For this purpose, several attenuation parameters, such as the mass attenuation coefficient (l=q), ...In this study, the gamma radiation shielding features of several environmentally friendly materials were investigated. For this purpose, several attenuation parameters, such as the mass attenuation coefficient (l=q), radiation protection efficiency (RPE), and effective atomic number (Zeff) were determined experimentally and compared with numerical data obtained using WinXCom software. In the measurements, the emitted gamma photons were counted by a gamma spectrometer equipped with an HPGe detector using 22Na, 54Mn, 57Co, 60Co, 133Ba, and 137Cs radioactive point sources in the energy region of 81–1333 keV. The obtained results indicate that the l=q and RPE values of the samples decrease with an increase in photon energy. The experimental values are in good agreement with those obtained using WinXCom software. The RPE and Zeff results show that among the studied materials, the NaY0.77Yb0.20Er0.03F4 sample has the best gamma radiation shielding effectiveness.展开更多
文摘A method developed for the screening of diethylene glycol (DEG) in toothpaste was released by the FDA in 2007. This method could not only quantify the DEG but also confirm if any potential interfering peak is pre- sent. However, disadvantages of this method such as intermittent shortages of the key reagent acetonitrile and the shorter than expected column-life issues have prompted a search for alternative solutions. An im- provement with an alternate “greener” extraction solvent is presented, and the method comparison and vali- dation are described in this article. The greener extraction solvent, ethanol with limited water, provided a better efficiency for the toothpaste sampling procedures. The limit of detection (LOD) and limit of quantita- tion (LOQ) are 0.0025% and 0.0084% in (w/w) unit, respectively. The sample recovery is 101.2%.
文摘IN the age of rapid economic development, green living has become a lifestyle pursued by most Chinese. The green and eco-friendly consumption concept is being integrated into people’s daily lives, making life more comfortable and diverse. Green Restaurants Born in the 1990s, Liu Chang, a white collar employee of a foreign company, is a serious foodie. She has tried various restaurants in Beijing because of her love for food, but her favorites are the green restaurants.
文摘The Sliding Bike is a patented new product that perfectly combines bike functionality and mechanical principles.Our models before 2014 used only horizontal sliding mechanism,and they were awarded invention golden medals in Seoul,Geneva,Pittsburgh,and Taipei,and the Japan GD
文摘Organized by Eurovet, the world’s leading lingerie and beachwear trade show organizer and supported by Hong Kong Intimate Apparel and Industries’ Association (HKIAIA), the fifth Interfilière Hong Kong –
文摘Low-carbon lifestyles and business operations are gaining popularity as China pushes for more intense green efforts across the country In the global fight against climate change, China has always been at the forefront, making pushes into wind and hydropower to offer relief from its reliance on
文摘The 19th National Congress of the Communist Party of China(CPC)will be held in Beijing on October 18.Led by the strong leadership of the CPC Central Committee with Xi Jinping at the core,China has made extraordinary achievements both at home and on the world stage since the 18th CPC National Congress was held in November 2012.
文摘For those living in the Northern Hemisphere,now is the best season to plant a tree.On March 12,China’s 40th annual Tree Planting Day,schools,families and work units organized greening rituals,with temperature climbing and the frozen ground thawing.Awareness of the importance of tree planting growing over the past decades,it is no surprise that NASA released a report in February,announcing that the world is literally a greener place because of China.
文摘The greening of urban areas is im-proving as more cities step up efforts toplant trees. The average green cover has in-creased to one fifth of the aggregate urbanexpanse, with every urban resident en-
文摘Transformation to sustainable business improves a county’s prospects Han Guocheng used to feel guilty and worry about being punished as his firm engaged in resource exploitation.These days though,having transitioned from gold digger to environment protector over the past decade,he feels at ease."Now I earn only 15 percent of my former income,but frankly speaking,I feel more
文摘President Xi Jinping joins a tree planting activity in an eastern suburb of Beijing on April 2.Afforestation has long been a fine tradition of the Chinese nation,and the event was a concrete action in building a beautiful China,advancing ecological conservation and improving people’s livelihood,Xi said.
文摘In the past year, extreme weather events have erupted across the globe, and 2010 looks to be one of the hottest years in recorded history. That has placed an onus on the Cancun conference to
文摘More than six decades after the establishment of diplomatic relations, China and Finland are finding new opportunities in the environmental business. Finland’s cutting-edge energy efficiency and renewable energy technologies could help China achieve its environmental protection goals,
文摘选注者言:最近,我也加入了“驾车一族”,我的小别克让我饱尝“飞驰”之乐。因此,我也更关心汽车的前景。本文向我们透露了许多研发新型汽车的最新消息。美国布什政府对研发氢燃料电池驱动的汽车的费用投入达12亿美元。但是,此消息刚刚宣布,MIT的研究就提出氢燃料电池驱动的汽车的不足:…uses sub-stantial energy and emits greenhouse gases.一种更环保更科学的汽车(hybrid cars/复合车)在日本的丰田和本田公司已经被投入生产。
文摘我是内蒙古大学的学生,上网浏览,读到这一条消息,非常兴奋。我们地区多年来治沙造林,造林防沙的工作取得了喜人的成绩。此短文告诉我们:satellite data show plants have been growing more vigorously since 1981。我特别高兴看到Beijing的字样。但是该消息又称:One suspected cause is risingtemperatures,possibly linked to the buildup of greenhouse gases in he atmosphere。我想对此句分析添加一词:forestation(人工造林)。
文摘In this study, the gamma radiation shielding features of several environmentally friendly materials were investigated. For this purpose, several attenuation parameters, such as the mass attenuation coefficient (l=q), radiation protection efficiency (RPE), and effective atomic number (Zeff) were determined experimentally and compared with numerical data obtained using WinXCom software. In the measurements, the emitted gamma photons were counted by a gamma spectrometer equipped with an HPGe detector using 22Na, 54Mn, 57Co, 60Co, 133Ba, and 137Cs radioactive point sources in the energy region of 81–1333 keV. The obtained results indicate that the l=q and RPE values of the samples decrease with an increase in photon energy. The experimental values are in good agreement with those obtained using WinXCom software. The RPE and Zeff results show that among the studied materials, the NaY0.77Yb0.20Er0.03F4 sample has the best gamma radiation shielding effectiveness.
