The SHRP2 Naturalistic Driving Study was used to evaluate the impact of various work zone and driver characteristics on back of queue safety critical events (crash, near-crash, or conflicts) The model included 43 SCE ...The SHRP2 Naturalistic Driving Study was used to evaluate the impact of various work zone and driver characteristics on back of queue safety critical events (crash, near-crash, or conflicts) The model included 43 SCE and 209 “normal” events which were used as controls. The traces included representing 209 unique drivers. A Mixed-Effects Logistic Regression model was developed with probability of a SCE as the response variable and driver and work zone characteristics as predictor variables. The final model indicated glances over 1 second away from the driving task and following closely increased risk of an SCE by 3.8 times and 2.9 times, respectively. Average speed was negatively correlated to crash risk. This is counterintuitive since in most cases, it is expected that higher speeds are related to back of queue crashes. However, most queues form under congested conditions. As a result, vehicles encountering a back of queue would be more likely to be traveling at lower speeds.展开更多
The glancing angle deposition( GLAD) method is a kind of physical vapor deposition and many kinds of self-standing nanostructured materials can be prepared. Here we report GLAD method to form selfstanding TiO_2 nanost...The glancing angle deposition( GLAD) method is a kind of physical vapor deposition and many kinds of self-standing nanostructured materials can be prepared. Here we report GLAD method to form selfstanding TiO_2 nanostructures on specific substrates,which makes photocatalysts easier to recycle. And smart designs of doping,decorating band gap matched materials can also make traditional photocatalysts take use of more visible light. In this review,we present some previous work fabricating nanostructured TiO_2 composites for enhanced photocatalytic performance by these methods.展开更多
Glancing incidence x-ray fluorescence spectrometry using a single-bounce parabolic capillary is proposed for the analysis of layered samples.The divergence of the x-ray beam was 0.33 mrad.In this paper,we used this in...Glancing incidence x-ray fluorescence spectrometry using a single-bounce parabolic capillary is proposed for the analysis of layered samples.The divergence of the x-ray beam was 0.33 mrad.In this paper,we used this instrumental setup to analyze a Si single crystal and a 50 nm HfO_(2) single-layer film deposited on a Si substrate.展开更多
This paper reports that SiO2 is selected to fabricate broadband antireflection （AR） coatings on fused silica substrate by using glancing angle deposition and physical vapour deposition. Through accurate control of t...This paper reports that SiO2 is selected to fabricate broadband antireflection （AR） coatings on fused silica substrate by using glancing angle deposition and physical vapour deposition. Through accurate control of the graded index of the SiO2 layer, transmittance of thc graded broadband AR coating can achieve an average value of 98% across a spectral range of 300-1850 nm. Moreover, a laser-induced damage threshold measurement of the fabricated AR coating is performed by using a one-on-one protocol according to ISOl1254-1, resulting in an average damage threshold of 17.2 J/cm2.展开更多
A monk peers over his shoulder as he goes about his duties at the Yonghegong Lama Temple or monastery of the Geluk School of Tibetan Buddhism.The rich yellow and reds in the temple＇s Hall of Harmony and Peace make a ...A monk peers over his shoulder as he goes about his duties at the Yonghegong Lama Temple or monastery of the Geluk School of Tibetan Buddhism.The rich yellow and reds in the temple＇s Hall of Harmony and Peace make a sumptuous visual splash against the dark austere interior.展开更多
Glancing Angle X-ray Diffraction (GAXRD) is introduced as a direct, non-destructive, surface-sensitive technique for analysis of thin films. The method was applied to polycrystalline thin films (namely, titanium oxide...Glancing Angle X-ray Diffraction (GAXRD) is introduced as a direct, non-destructive, surface-sensitive technique for analysis of thin films. The method was applied to polycrystalline thin films (namely, titanium oxide, zinc selenide, cadmium selenide and combinations thereof) obtained by electrochemical growth, in order to determine the composition of ultra-thin surface layers, to estimate film thickness, and perform depth profiling of multilayered heterostructures. The experimental data are treated on the basis of a simple absorption-diffraction model involving the glancing angle of X-ray incidence.展开更多
ZIRLO alloy specimens were implanted with carbon ions with fluence range from 1×10 16 to 1×10 18ions·cm -2, using a MEVVA source at an extraction voltage of 40 kV at maximum temperature of 380 ℃. The s...ZIRLO alloy specimens were implanted with carbon ions with fluence range from 1×10 16 to 1×10 18ions·cm -2, using a MEVVA source at an extraction voltage of 40 kV at maximum temperature of 380 ℃. The surfaces of the implanted samples were then analyzed and the TRIM 96 computer code was used to simulate the depth distribution of carbon. The valences of elements in the implanted surface of ZIRLO alloy were analyzed by X-ray photoemission spectroscopy (XPS); and then the depth distributions of the elements on the surface of the samples were obtained by Auger electron spectroscopy (AES). Scanning electron microscopy (SEM) was used to examine the micro-morphology of implanted samples. Glancing angle X-ray diffraction (GAXRD) at 0.30 incident angles was employed to examine the phase transformations of implanted samples. It shows that the as-received ZIRLO alloy is mainly composed of hexagonal alpha zirconium, as for implanted samples, there appeared hexagonal zirconia (H-ZrO_ 0.35) and sigma zirconium carbide (δ-Zr_3C_2), and the δ-Zr_3C_2 increased when increasing the fluence. When the fluence reached 1×10 18 ions·cm -2, the concentration of δ-Zr_3C_2 is the maximum in all the samples. The micro-morphology of implanted samples are similar, there are many pits with diameters ranging from 1 to 3 μm on the implanted surfaces.展开更多
Henri Feltz,standing member of French Social Economic Council,President of Association of Interpreters, Nord pas de Calais Area, President of Textile Industry Association and President of CMH Real Estate Group,said,&#...Henri Feltz,standing member of French Social Economic Council,President of Association of Interpreters, Nord pas de Calais Area, President of Textile Industry Association and President of CMH Real Estate Group,said,'in 2004,I visited China 4 times.展开更多
Malaysia asks Lynas for waste plan before licence renewal Malaysia is waiting on Australian miner Lynas Corp's plan to manage low-level radioactive waste from its rare earths processing plant ahead of a license re...Malaysia asks Lynas for waste plan before licence renewal Malaysia is waiting on Australian miner Lynas Corp's plan to manage low-level radioactive waste from its rare earths processing plant ahead of a license renewal, Malaysian Prime Minister Mahathir Mohamad said on Thursday.展开更多
During the last few days of March,the cold weather banished the warm steps of spring inexpectably in north China.However,in the city of Beijing,the textile and apparel industry welcomed its annual boom period every ye...During the last few days of March,the cold weather banished the warm steps of spring inexpectably in north China.However,in the city of Beijing,the textile and apparel industry welcomed its annual boom period every year:the China International Trade Fair for Fibers and Yarns,the China International Trade Fair for Apparel Fabrics and Accessories (CHIC 2008),the China International Clothing & Accessories Fair and the 08 S/S Collections Fashion Week.展开更多
Incandescent lamp will be forbidden in Japan Japan took new measures on energy saving. Japanese government decided to stop manufacturing and selling of high energy consumption incandescent lamps, with the substitution...Incandescent lamp will be forbidden in Japan Japan took new measures on energy saving. Japanese government decided to stop manufacturing and selling of high energy consumption incandescent lamps, with the substitution of fluorescent lamps by 2012. It was reported that Akira Amari, minister of METI, had announced展开更多
The US Department of Energy＇s （DOE） National Energy Technology Laboratory （NETL） has identified high concentrations of rare earth element （REE） in coal samples collected from several American coal basins.
Rare earth elements were recycled from electronic trash in Finland The VTT National Center for technical research in Finland issued a news report that a comprehensive recycling technology for electronic waste has bee...Rare earth elements were recycled from electronic trash in Finland The VTT National Center for technical research in Finland issued a news report that a comprehensive recycling technology for electronic waste has been developed in Finland. This technology can be used to recover metals and rare earth elements to generate electricity or produce organic components of plastics and chemicals.展开更多
文摘The SHRP2 Naturalistic Driving Study was used to evaluate the impact of various work zone and driver characteristics on back of queue safety critical events (crash, near-crash, or conflicts) The model included 43 SCE and 209 “normal” events which were used as controls. The traces included representing 209 unique drivers. A Mixed-Effects Logistic Regression model was developed with probability of a SCE as the response variable and driver and work zone characteristics as predictor variables. The final model indicated glances over 1 second away from the driving task and following closely increased risk of an SCE by 3.8 times and 2.9 times, respectively. Average speed was negatively correlated to crash risk. This is counterintuitive since in most cases, it is expected that higher speeds are related to back of queue crashes. However, most queues form under congested conditions. As a result, vehicles encountering a back of queue would be more likely to be traveling at lower speeds.
基金Sponsored by the Ministry of Science and Technology of P.R.C(Grant No.2016YFE0104000)
文摘The glancing angle deposition( GLAD) method is a kind of physical vapor deposition and many kinds of self-standing nanostructured materials can be prepared. Here we report GLAD method to form selfstanding TiO_2 nanostructures on specific substrates,which makes photocatalysts easier to recycle. And smart designs of doping,decorating band gap matched materials can also make traditional photocatalysts take use of more visible light. In this review,we present some previous work fabricating nanostructured TiO_2 composites for enhanced photocatalytic performance by these methods.
基金Project supported by the National Key Research and Development Program of China(Grant No.2021YFF0701202)the National Natural Science Foundation of China(Grant No.11875087)。
文摘Glancing incidence x-ray fluorescence spectrometry using a single-bounce parabolic capillary is proposed for the analysis of layered samples.The divergence of the x-ray beam was 0.33 mrad.In this paper,we used this instrumental setup to analyze a Si single crystal and a 50 nm HfO_(2) single-layer film deposited on a Si substrate.
基金Project supported by the National Natural Science Foundation of China (Grant No. 10804060)Higher Educational Science and Technology Program of Shandong Province of China (Grant No. J08LI05)
文摘This paper reports that SiO2 is selected to fabricate broadband antireflection （AR） coatings on fused silica substrate by using glancing angle deposition and physical vapour deposition. Through accurate control of the graded index of the SiO2 layer, transmittance of thc graded broadband AR coating can achieve an average value of 98% across a spectral range of 300-1850 nm. Moreover, a laser-induced damage threshold measurement of the fabricated AR coating is performed by using a one-on-one protocol according to ISOl1254-1, resulting in an average damage threshold of 17.2 J/cm2.
文摘A monk peers over his shoulder as he goes about his duties at the Yonghegong Lama Temple or monastery of the Geluk School of Tibetan Buddhism.The rich yellow and reds in the temple＇s Hall of Harmony and Peace make a sumptuous visual splash against the dark austere interior.
文摘Glancing Angle X-ray Diffraction (GAXRD) is introduced as a direct, non-destructive, surface-sensitive technique for analysis of thin films. The method was applied to polycrystalline thin films (namely, titanium oxide, zinc selenide, cadmium selenide and combinations thereof) obtained by electrochemical growth, in order to determine the composition of ultra-thin surface layers, to estimate film thickness, and perform depth profiling of multilayered heterostructures. The experimental data are treated on the basis of a simple absorption-diffraction model involving the glancing angle of X-ray incidence.
文摘ZIRLO alloy specimens were implanted with carbon ions with fluence range from 1×10 16 to 1×10 18ions·cm -2, using a MEVVA source at an extraction voltage of 40 kV at maximum temperature of 380 ℃. The surfaces of the implanted samples were then analyzed and the TRIM 96 computer code was used to simulate the depth distribution of carbon. The valences of elements in the implanted surface of ZIRLO alloy were analyzed by X-ray photoemission spectroscopy (XPS); and then the depth distributions of the elements on the surface of the samples were obtained by Auger electron spectroscopy (AES). Scanning electron microscopy (SEM) was used to examine the micro-morphology of implanted samples. Glancing angle X-ray diffraction (GAXRD) at 0.30 incident angles was employed to examine the phase transformations of implanted samples. It shows that the as-received ZIRLO alloy is mainly composed of hexagonal alpha zirconium, as for implanted samples, there appeared hexagonal zirconia (H-ZrO_ 0.35) and sigma zirconium carbide (δ-Zr_3C_2), and the δ-Zr_3C_2 increased when increasing the fluence. When the fluence reached 1×10 18 ions·cm -2, the concentration of δ-Zr_3C_2 is the maximum in all the samples. The micro-morphology of implanted samples are similar, there are many pits with diameters ranging from 1 to 3 μm on the implanted surfaces.
文摘Henri Feltz,standing member of French Social Economic Council,President of Association of Interpreters, Nord pas de Calais Area, President of Textile Industry Association and President of CMH Real Estate Group,said,'in 2004,I visited China 4 times.
文摘Malaysia asks Lynas for waste plan before licence renewal Malaysia is waiting on Australian miner Lynas Corp's plan to manage low-level radioactive waste from its rare earths processing plant ahead of a license renewal, Malaysian Prime Minister Mahathir Mohamad said on Thursday.
文摘During the last few days of March,the cold weather banished the warm steps of spring inexpectably in north China.However,in the city of Beijing,the textile and apparel industry welcomed its annual boom period every year:the China International Trade Fair for Fibers and Yarns,the China International Trade Fair for Apparel Fabrics and Accessories (CHIC 2008),the China International Clothing & Accessories Fair and the 08 S/S Collections Fashion Week.
文摘Incandescent lamp will be forbidden in Japan Japan took new measures on energy saving. Japanese government decided to stop manufacturing and selling of high energy consumption incandescent lamps, with the substitution of fluorescent lamps by 2012. It was reported that Akira Amari, minister of METI, had announced
文摘The US Department of Energy＇s （DOE） National Energy Technology Laboratory （NETL） has identified high concentrations of rare earth element （REE） in coal samples collected from several American coal basins.
文摘Rare earth elements were recycled from electronic trash in Finland The VTT National Center for technical research in Finland issued a news report that a comprehensive recycling technology for electronic waste has been developed in Finland. This technology can be used to recover metals and rare earth elements to generate electricity or produce organic components of plastics and chemicals.
