Ophiolites along the indus Suture Zone (ISZ) are important not only for the information they provide about the India\|Eurasia collision,but may also contain economic mineral deposits (chrome,noble metals,and Ni\|sulfi...Ophiolites along the indus Suture Zone (ISZ) are important not only for the information they provide about the India\|Eurasia collision,but may also contain economic mineral deposits (chrome,noble metals,and Ni\|sulfides).Several ophiolites occur in the ISZ,and the Nidar ophiolite is one that occurs on the eastern Ladakh.This paper presents the geochemistry of ultramafic rocks from the Nidar ophiolite to understand tectonic environment and economic potential.Nidar ophiolite consists of pillow lavas,radiolarian cherts,rodingites,peridotites and chromitites.The lower part of the ophiolite consists of tectonized harzburgite,hosting dunite enveloped podiform chromitites.The transition zone between upper mantle and lower oceanic crust is characterized by serpentinized dunite with disseminations of chromites.Peridotites in Nidar have low whole\|rock values of w (TiO\-2)(0 02%～0 03%), w (Al\-2O\-3)(2%～3%), w (CaO)(0.5%), w (Zr)(40×10 -6 ),and w (Y)(30×10 -6 ),and enriched in refractory elements such as w (Cr)((3000～5000)×10 -6 )and w (Ni)((3000～4000)×10 -6 ).Thus,the Nidar peridotites are more depleted in elements partitioned into the liquid,such as Al and Ca and the moderately refractory element Ti.The peridotites have fractionated chondrite\|normalized PGE patterns.These geochemical characteristics suggests their formation by high degrees of partial melting in a supra\|subduction zone environment,where melting was enhanced by addition of volatiles.The Cr # of 0.82 in the chromite of the chromitites also suggests a depleted mantle source and a supra\|subduction zone environment for the host rocks.Ophiolites formed in supra\|subduction zone setting are very conducive for many metallic and non\|metallic mineral deposits.展开更多
Supra 5002具有强大的除雪头和强劲的驱动装置,是专业除雪领域的佼佼者。宽敞和符合人体工程学设计的驾驶室以及方便的操纵杆控制装置为其提供了出色的操作性。新生态模式(new Eco-Mode)的使用大幅度降低了约20%的油耗。其流畅的线条和...Supra 5002具有强大的除雪头和强劲的驱动装置,是专业除雪领域的佼佼者。宽敞和符合人体工程学设计的驾驶室以及方便的操纵杆控制装置为其提供了出色的操作性。新生态模式(new Eco-Mode)的使用大幅度降低了约20%的油耗。其流畅的线条和强大的比例结合了技术和符合人体工程学的客户需求与动态设计。设计首先研究的是驾驶员座椅卓越的可视性和最佳的人体工程学设计,同时提出了驾驶室的创新概念。展开更多
The suprachiasmatic nucleus and Alzheimer’s disease(AD):AD is the most frequently diagnosed form of dementia,with the total number of AD patients worldwide expected to triple by 2050 compared to 2015(Prince et al.,20...The suprachiasmatic nucleus and Alzheimer’s disease(AD):AD is the most frequently diagnosed form of dementia,with the total number of AD patients worldwide expected to triple by 2050 compared to 2015(Prince et al.,2015).Despite years of research,much of the AD pathology remains unclear with no treatment or cure available.Besides its two hallmarks,amyloid-β(Aβ)plagues and hyperphosphorylated tau tangles,a distortion of circadian rhythms is commonly observed.Furthermore,poor sleep quality or trouble falling asleep are common AD symptoms,sometimes developing 10-15 years before cognitive symptoms associated with AD(Ju et al.,2014).展开更多
A theoretical investigation is carried out to understand the basic features of ion-acoustic(IA)waves in an unmagnetised plasmas including cool ions,hot ions having a kappa distribution and kappa-distributed electrons,...A theoretical investigation is carried out to understand the basic features of ion-acoustic(IA)waves in an unmagnetised plasmas including cool ions,hot ions having a kappa distribution and kappa-distributed electrons,using small amplitude techniques.The effects of excess suprathermal ions,the ion temperature T_(i) and electron temperature T_(e) as well as the density ratio on the IA waves are studied.It is found that the suprathermality effects play an important role in the system,as the geometric characteristics of the IA solitons are found to be significantly affected through the ion and electron suprathermal index.In the presence of suprathermality effects,either polarity is in principle supported by this plasma model.展开更多
Important technological and physics issues related to steady-state operationrequired for next step are being examined on Tore Supra, after a major upgrade of internalcomponents in order to increase the heat extraction...Important technological and physics issues related to steady-state operationrequired for next step are being examined on Tore Supra, after a major upgrade of internalcomponents in order to increase the heat extraction capability to 25 MW for 1000 s. Here, we showfirst experimental results, where all the plasma facing components were actively cooled duringpulses exceeding four minutes, with reactor-relevant heat load. New physics was observed innon-inductively driven plasmas, including a stationary peaked radial profile of the plasma densitygenerated by an anomalous inward pinch; and a regime characterized by sinusoidal oscillations ofcentral electron temperature, governed by non-linear coupling between heat transport and plasmacurrent analogous to a predator-prey mechanism.展开更多
The aim of this study was to compare differences in imaging quality at different injection rates of gadobutrol(Gadovist? 1.0M) for dynamic supra-aortic imaging by contrast-enhanced magnetic resonance angiography(CEM R...The aim of this study was to compare differences in imaging quality at different injection rates of gadobutrol(Gadovist? 1.0M) for dynamic supra-aortic imaging by contrast-enhanced magnetic resonance angiography(CEM RA). In 6 healthy volunteers,dynamic CEM RA examinations were performed twice at a 7 d interval with a gadobutrol dose of 0.1 mmol given to 1 kg body mass. For the two examinations,the contrast medium was injected at rates of 1.5 mL/s and 2.0 mL/s,followed by 20 mL normal saline injected at the same rate. Using a GE Signa 3.0T M R apparatus and the time-resolved imaging of contrast kinetics(TRICKS) technique,scanning was performed continuously for 15 phases at a time resolution of about 2.4 s. Vascular reconstruction was undertaken by multiplane reconstruction and maximum intensity projection techniques. Two radiologists experienced in CEM RA diagnosis subjectively evaluated the contrast effect,vascular detail,and pseudo-shadow of all images,and graded them via a 5-point scale. With the two drug injection rates,the image quality,peak signal-to-noise ratio(SNR) and contrast-to-noise ratio(CNR) were compared for imaging of the infra-aortic arch,brachiocephalic trunk,subclavian artery(left/right),common carotid artery(left/right),internal carotid artery(left/right),and external carotid artery(left/right). Characteristics of the time-signal-intensity(T-S-I) curves were also analyzed at the two injection rates. All studies were performed successfully,without any complications. There was good image quality with both gadobutrol injection rates of 1.5 mL/s and 2.0 mL/s,and subjective scores for image quality,SNR and CNR were not significantly different between the two rates(P > 0.05). The time-to-peak(TTP) from the hand dorsal vein injection site to the carotid artery ranged from 16.0 s to 27.1 s(mean 21.7 s ±3.4 s) in the 6 subjects,and was also not significantly different between the two drug injection rates(P > 0.05). We conclude that dynamic CEM RA examination of the supra-aortic arch with gadobutrol injection at a rate of 1.5 mL/s was feasible,and satisfactorily reflected vascular shape and dynamic blood flow information.展开更多
日本住友公司生产的纤维素纤维用染料SumfixSupra染料,具有质量高、省能和省水的特点。而且耐氯漂、耐晒、耐汗渍牢度高,匀染性和重演性良好,固色率高,易洗涤性良好,可用于冷轧堆法染色。Sumifix Supra三原色为:Sumifix Supra 黄3RF、艳...日本住友公司生产的纤维素纤维用染料SumfixSupra染料,具有质量高、省能和省水的特点。而且耐氯漂、耐晒、耐汗渍牢度高,匀染性和重演性良好,固色率高,易洗涤性良好,可用于冷轧堆法染色。Sumifix Supra三原色为:Sumifix Supra 黄3RF、艳红3BF、藏青2GF用于橙色和红色的染料为:Sumifix 黄3RF。展开更多
BMW Z4的孪生兄弟在面孔之下绝对是纯种德国制。现在只能盼望着它的性格里还带着足够的日式疯狂。这款车已经让我们等了16年,这些年里我们一直盼着丰田着手开工的好消息。全新一代Supra,传奇车系的第五代目(如果算上精神层面的开创者200...BMW Z4的孪生兄弟在面孔之下绝对是纯种德国制。现在只能盼望着它的性格里还带着足够的日式疯狂。这款车已经让我们等了16年,这些年里我们一直盼着丰田着手开工的好消息。全新一代Supra,传奇车系的第五代目(如果算上精神层面的开创者2000GT的话算是第六代),一台轻松就能焕发出极限动力的神车。展开更多
丰田并没有直接展出大家期待已久的Supra，而是拿一款Gazoo Racing Supra Concept继续吊胃口。真正Supra要等到19年的底特律车展才会正式亮相。
这辆赛车的车身都是量产级别的，所以各位可以用大脑把这身战衣脱掉，把尾冀卸掉，贴纸撕...丰田并没有直接展出大家期待已久的Supra，而是拿一款Gazoo Racing Supra Concept继续吊胃口。真正Supra要等到19年的底特律车展才会正式亮相。
这辆赛车的车身都是量产级别的，所以各位可以用大脑把这身战衣脱掉，把尾冀卸掉，贴纸撕掉。剩下的就是一台量产Supra。展开更多
基金This work was supported by the National Natural Science Foundation of China （Grant No. 50271038）the Key Research Project Foundation of Shaanxi Normal University of China （No. 200403） Specialized Research Fund for the Doctoral Program of Higher Education of China （No. 20050698017）.
文摘Ophiolites along the indus Suture Zone (ISZ) are important not only for the information they provide about the India\|Eurasia collision,but may also contain economic mineral deposits (chrome,noble metals,and Ni\|sulfides).Several ophiolites occur in the ISZ,and the Nidar ophiolite is one that occurs on the eastern Ladakh.This paper presents the geochemistry of ultramafic rocks from the Nidar ophiolite to understand tectonic environment and economic potential.Nidar ophiolite consists of pillow lavas,radiolarian cherts,rodingites,peridotites and chromitites.The lower part of the ophiolite consists of tectonized harzburgite,hosting dunite enveloped podiform chromitites.The transition zone between upper mantle and lower oceanic crust is characterized by serpentinized dunite with disseminations of chromites.Peridotites in Nidar have low whole\|rock values of w (TiO\-2)(0 02%～0 03%), w (Al\-2O\-3)(2%～3%), w (CaO)(0.5%), w (Zr)(40×10 -6 ),and w (Y)(30×10 -6 ),and enriched in refractory elements such as w (Cr)((3000～5000)×10 -6 )and w (Ni)((3000～4000)×10 -6 ).Thus,the Nidar peridotites are more depleted in elements partitioned into the liquid,such as Al and Ca and the moderately refractory element Ti.The peridotites have fractionated chondrite\|normalized PGE patterns.These geochemical characteristics suggests their formation by high degrees of partial melting in a supra\|subduction zone environment,where melting was enhanced by addition of volatiles.The Cr # of 0.82 in the chromite of the chromitites also suggests a depleted mantle source and a supra\|subduction zone environment for the host rocks.Ophiolites formed in supra\|subduction zone setting are very conducive for many metallic and non\|metallic mineral deposits.
文摘The suprachiasmatic nucleus and Alzheimer’s disease(AD):AD is the most frequently diagnosed form of dementia,with the total number of AD patients worldwide expected to triple by 2050 compared to 2015(Prince et al.,2015).Despite years of research,much of the AD pathology remains unclear with no treatment or cure available.Besides its two hallmarks,amyloid-β(Aβ)plagues and hyperphosphorylated tau tangles,a distortion of circadian rhythms is commonly observed.Furthermore,poor sleep quality or trouble falling asleep are common AD symptoms,sometimes developing 10-15 years before cognitive symptoms associated with AD(Ju et al.,2014).
文摘A theoretical investigation is carried out to understand the basic features of ion-acoustic(IA)waves in an unmagnetised plasmas including cool ions,hot ions having a kappa distribution and kappa-distributed electrons,using small amplitude techniques.The effects of excess suprathermal ions,the ion temperature T_(i) and electron temperature T_(e) as well as the density ratio on the IA waves are studied.It is found that the suprathermality effects play an important role in the system,as the geometric characteristics of the IA solitons are found to be significantly affected through the ion and electron suprathermal index.In the presence of suprathermality effects,either polarity is in principle supported by this plasma model.
文摘Important technological and physics issues related to steady-state operationrequired for next step are being examined on Tore Supra, after a major upgrade of internalcomponents in order to increase the heat extraction capability to 25 MW for 1000 s. Here, we showfirst experimental results, where all the plasma facing components were actively cooled duringpulses exceeding four minutes, with reactor-relevant heat load. New physics was observed innon-inductively driven plasmas, including a stationary peaked radial profile of the plasma densitygenerated by an anomalous inward pinch; and a regime characterized by sinusoidal oscillations ofcentral electron temperature, governed by non-linear coupling between heat transport and plasmacurrent analogous to a predator-prey mechanism.
文摘The aim of this study was to compare differences in imaging quality at different injection rates of gadobutrol(Gadovist? 1.0M) for dynamic supra-aortic imaging by contrast-enhanced magnetic resonance angiography(CEM RA). In 6 healthy volunteers,dynamic CEM RA examinations were performed twice at a 7 d interval with a gadobutrol dose of 0.1 mmol given to 1 kg body mass. For the two examinations,the contrast medium was injected at rates of 1.5 mL/s and 2.0 mL/s,followed by 20 mL normal saline injected at the same rate. Using a GE Signa 3.0T M R apparatus and the time-resolved imaging of contrast kinetics(TRICKS) technique,scanning was performed continuously for 15 phases at a time resolution of about 2.4 s. Vascular reconstruction was undertaken by multiplane reconstruction and maximum intensity projection techniques. Two radiologists experienced in CEM RA diagnosis subjectively evaluated the contrast effect,vascular detail,and pseudo-shadow of all images,and graded them via a 5-point scale. With the two drug injection rates,the image quality,peak signal-to-noise ratio(SNR) and contrast-to-noise ratio(CNR) were compared for imaging of the infra-aortic arch,brachiocephalic trunk,subclavian artery(left/right),common carotid artery(left/right),internal carotid artery(left/right),and external carotid artery(left/right). Characteristics of the time-signal-intensity(T-S-I) curves were also analyzed at the two injection rates. All studies were performed successfully,without any complications. There was good image quality with both gadobutrol injection rates of 1.5 mL/s and 2.0 mL/s,and subjective scores for image quality,SNR and CNR were not significantly different between the two rates(P > 0.05). The time-to-peak(TTP) from the hand dorsal vein injection site to the carotid artery ranged from 16.0 s to 27.1 s(mean 21.7 s ±3.4 s) in the 6 subjects,and was also not significantly different between the two drug injection rates(P > 0.05). We conclude that dynamic CEM RA examination of the supra-aortic arch with gadobutrol injection at a rate of 1.5 mL/s was feasible,and satisfactorily reflected vascular shape and dynamic blood flow information.
文摘日本住友公司生产的纤维素纤维用染料SumfixSupra染料,具有质量高、省能和省水的特点。而且耐氯漂、耐晒、耐汗渍牢度高,匀染性和重演性良好,固色率高,易洗涤性良好,可用于冷轧堆法染色。Sumifix Supra三原色为:Sumifix Supra 黄3RF、艳红3BF、藏青2GF用于橙色和红色的染料为:Sumifix 黄3RF。
