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| 1 | 一种新型的高频半导体量子点单电子泵显示文摘除了直流负电压外,还在浅法刻蚀出的GaAs/AlGaAs量子线上的两个金属指形门上分别叠加两个相位相差π的正弦信号,从而对形成量子点的两个势垒作不等幅调制.在无源漏偏压的情况下,通过周期形成的量子点实现了单电子的搬运.由于新的半导体量子点单电子泵不是依赖库仑阻塞效应通过隧穿进行单电子输运,因此,该器件就不会受到固定隧穿时间引起的低工作频率限制.在1.7K温度下,频率达到3GHz仍然可以观测到量子化电流平台,对应的电流值达到0.5nA量级.这种新器件提供了实现高速度、高精度搬运单电子的另一种可能途径. | 李玲 Kaestner B Blumenthal M D Giblin S Janssen T J B M Pepper M Anderson D Jones G Ritchie D A 高洁 | 2008 | 物理学报2008，57，3： | 4 |
| 2 | Pancreatic cancer serum biomarker PC-594:Diagnostic performance and comparison to CA19-9显示文摘AIM:To investigate serum PC-594 fatty acid levels as a potential biomarker in North American pancreatic cancer(PaC) patients,and to compare its performance to CA19-9.METHODS:Using tandem mass spectrometry,we evaluated serum PC-594 levels from 84 North American patients with confirmed PaC and 99 cancer-free control subjects.We determined CA19-9 levels by ELISA.Significance between Pa C patients and controls,and association with clinical variables was determined by analysis of variance and t-tests.Diagnostic performance was evaluated by receiver-operator characteristic(ROC)curve analysis,and PC-594 correlation with age and CA19-9 determined by regression analysis.RESULTS:Mean PC-594 levels were 3.7 times lower in Pa C patients compared to controls(P < 0.0001).The mean level in PaC patient serum was 0.76 ± 0.07 μmol/L,and the mean level in control subjects was 2.79 ± 0.15 μmol/L.There was no correlation between PC-594 and age,disease stage or gender(P > 0.05).Using 1.25 μmol/L as a PC-594 threshold produced a relative risk(RR) of 9.4(P < 0.0001,95%CI:5.0-17.7).The area under the receiver-operator characteristic curve(ROCAUC) was 0.93(95%CI:0.91-0.95) for PC-594 and 0.85(95%CI:0.82-0.88) for CA19-9.Sensitivity at 90% specificity was 87% for PC-594 and 71% for CA19-9.Six Pa C patients with CA19-9 above 35 U/m L showed normal PC-594 levels,while 24 Pa C patients with normal CA19-9 showed low PC-594 levels.Eighty-five of the 99 control subjects(86%) showed normal levels of both markers.CONCLUSION:PC-594 biomarker levels are significantly reduced in North American Pa C patients,and showed superior diagnostic performance compared to CA19-9. | Shawn A Ritchie Bassirou Chitou Qingan Zheng Dushmanthi Jayasinghe Wei Jin Asuka Mochizuki Dayan B Goodenowe | 2015 | World Journal of Gastroenterology2015，21，21： | 3 |
| 3 | Base-directed forma-tion of fluorescent silver clusters显示文摘 | SENGUPTA B RITCHIE C M BUCKMAN J G | 2008 | J Phys Chem C2008，112，18： | 1 |
| 4 | Governance:a review and synthesis of the literature显示文摘 | Ruhanen L Scott N Ritchie B | | 0，，04： | 1 |
| 5 | The measurement of destination image: An empirical assessment 显示文摘 | Echtner C M Ritchie J R B | 1993 | Journal of Travel Research1993，31，4： | 1 |
| 6 | The reaction between reduced ilmenite and oxygen in ammonium chloride solutions 显示文摘 | Farrow J B Ritchie I M Mangano P | 1987 | Hy- drometallurgy1987，18，1： | 1 |
| 7 | The measurement of destination image: An empirical assessment 显示文摘 | Echtner C M Ritchie B | 1993 | Journal of Travel Research1993，31，4： | 1 |
| 8 | The measurement of destination im- age: An empirical assessment显示文摘 | Echtuer C M Ritchie J R B | 1993 | Journal of Travel Research1993，31，4： | 1 |
| 9 | Effect of load ratio and maximum stress intensity on the fatigue threshold in Ti-6A1-4V显示文摘 | BOYCE J B L RITCHIE R O | 2001 | Engineering Fracture Mechanics2001，68，： | 1 |
| 10 | The Measurement of Destination Im- age : An Empirical Assessment 显示文摘 | Echtner C M Ritchie J R B | 1993 | Journal of Travel Research1993，31，4： | 1 |
| 11 | Destination branding: Insights and practices from destination management organiza- tions显示文摘 | BLAIN C R LEVY S E RITCHIE J R B | 2005 | Travel Research2005，43，5： | 1 |
| 12 | High-throughput phenotyping in cotton:a review显示文摘Recent technological advances in cotton(Gossypium hirsutum L.) phenotyping have offered tools to improve the efficiency of data collection and analysis.High-throughput phenotyping(HTP) is a non-destructive and rapid approach of monitoring and measuring multiple phenotypic traits related to the growth,yield,and adaptation to biotic or abiotic stress.Researchers have conducted extensive experiments on HTP and developed techniques including spectral,fluorescence,thermal,and three-dimensional imaging to measure the morphological,physiological,and pathological resistance traits of cotton.In addition,ground-based and aerial-based platforms were also developed to aid in the implementation of these HTP systems.This review paper highlights the techniques and recent developments for HTP in cotton,reviews the potential applications according to morphological and physiological traits of cotton,and compares the advantages and limitations of these HTP systems when used in cotton cropping systems.Overall,the use of HTP has generated many opportunities to accurately and efficiently measure and analyze diverse traits of cotton.However,because of its relative novelty,HTP has some limitations that constrains the ability to take full advantage of what it can offer.These challenges need to be addressed to increase the accuracy and utility of HTP,which can be done by integrating analytical techniques for big data and continuous advances in imaging. | PABUAYON Irish Lorraine B SUN Yazhou GUO Wenxuan RITCHIE Glen L | 2019 | Journal of Cotton Research2019，2，3： | 1 |
| 13 | Assessing the impact of hallmark events显示文摘 | Ritchie J R B | 1984 | Journal of Travel Research1984，，1： | 1 |
| 14 | Protonation of CIS-PBO in metanesulfonic acid solutions显示文摘 | Daniel B Roitman Jan McAlister Marc McAdon Ritchie A Wessling | 1994 | Journal of Polymer Science Part B:Polymer Physics1994，7，32： | 1 |
| 15 | An empirical study of association decision processes in convention site selection 显示文摘 | Fortin P A Ritchie J R B | 1977 | Journal of Travel Research1977，15，4： | 1 |
| 16 | The meaning and measure- ment of destination image 显示文摘 | Echtner C M Ritchie J R B | 2003 | Journal of Tourism Studies2003，，： | 1 |
| 17 | Condition monitoring of wind generators显示文摘 | POPA L M JENSEN B B RITCHIE E | 2003 | Industry Applications Conference2003，3，： | 1 |
| 18 | A tetrodotoxin producing marine pathogen 显示文摘 | Ritchie K B Nagelkerken I James S etal | 2000 | Nature2000，23，： | 1 |
| 19 | Glucagon and arginine vasopressin stimulate Mg2+ uptake in mouse distal convoluted tubule cells显示文摘 | Dai L J Bapty B Ritchie G | 1998 | Am J Physiol1998，274，： | 1 |
| 20 | Influence of microstructure on high-cycle fatigue of Ti-6Al-4V:bi- modal vs lamellar structures 显示文摘 | Nalla R K Ritchie R O Boyce B L | 2002 | Metallurgical and Materials Transactions A2002，33，13： | 1 |
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