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Copyright of China Plastics / Zhongguo Suliao is the property of Journal Office of CHINA PLASTICS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective In the hydrogen purification system, in order to analyze the process energy, the influence of oxygen mole fraction in feedstock on heat release from hydrogen-oxygen reaction and reactor temperature was investigated. Method The energy consumption of the electric heater and the amount of cold consumed by the cooler were further calculated by the method of model calculation to enable the optimization of the process flow. Based on this, a new purification process of heat exchange regeneration gas was proposed, and the effects of oxygen mole fraction and logistics flow on system temperature were analyzed. Results The heating can meet the energy requirements only when the oxygen mole fraction is above 0.13%. Compared with the original process, the new heat exchange regeneration gas purification process can save more than 88% of the cooling capacity, and the operating temperature of the system can be maintained without electric heating. Conclusion The new heat exchange regeneration gas purification process can fully use the heat released by the hydrogen and oxygen reaction to heat the cold flow, save the electricity energy consumption and cooling capacity, and reduce operating costs. [ABSTRACT FROM AUTHOR]

Copyright of Chemical Engineering (China) / Huaxue Gongcheng is the property of Hualu Engineering Science & Technology Co Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Atomic Energy Science & Technology is the property of Editorial Board of Atomic Energy Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Under slippery conditions, the thickness of accumulated water is affected by uneven runways and changed by the fluctuation of the road surface, and the safety of aircraft take-off and landing is also affected. Therefore, the international flatness index (IRI) was introduced to build a tire-water-pavement finite element model based on the IRI. Through simulation, the influence of different IRI indexes on the critical hydroplaning speed of aircraft was analysed. Combined with IRI index, the reduction range of apparent friction coefficient of pavement with different tire speed and accumulated water thickness was compared, and the influence of IRI on pavement friction performance was analysed. According to the experimental results of apparent friction coefficient of an airport, the simulation results were modified to explore the influence of the IRI on aircraft braking effect. The results show that when the thickness of accumulated water in the pavement levelling section is constant, the critical water skiing speed of aircraft is reduced by the increase of IRI, and it is reduced by about 30% compared with the flat pavement when IRI = 5. When the speed of the aircraft tires is constant, the apparent friction coefficient of the pavement is decreased by the decrease of the level of the pavement smoothness. When IRI = 5, the apparent friction coefficient of the pavement is reduced by as much as 98% compared with the smooth pavement, which seriously affects the safety of the aircraft operation. When the road surface smoothness grade is “ good”, under the same thickness of accumulated water in the pavement levelling section, the apparent friction coefficient between the aircraft tire and the road surface is decreased by the increase of the IRI. Considering the influence of the IRI index and the apparent friction coefficient corrected by the test data on the braking effect of the aircraft, it is found that the braking effect of the aircraft will be degraded with the gradual increase of the flatness index and the thickness of accumulated water in the pavement levelling section. Under the conditions of a domestic airport pavement with 1. 5 < IRI≤2 and the thickness of accumulated water in the pavement levelling section≥7. 66 mm, the braking effect of the aircraft is reduced by a maximum of 2 grades, that is, from “ good to medium” to “medium to poor”, at this time the aircraft directional control and deceleration capabilities are decreased. When the flatness of the water surface is evaluated as “medium” or “ poor”, the degradation of the aircraft braking effect is increased suddenly, and the pavement surface conditions cannot be guaranteed the safety of aircraft operation. And when the thickness of accumulated water in the pavement levelling section is 7. 66 ~ 13 mm, the braking effect of the aircraft is greatly affected by the change of the IRI, and the degradation is changed obviously, so special attention should be paid during the maintenance process. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Beijing University of Technology is the property of Journal of Beijing University of Technology, Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Construction of "blue granary" is an important move to implement China's maritime power strategy, and is of great strategic significance for maintaining sustainable development of marine resources and guaranteeing national food security. As a major fishery province, Guangdong Province has rich marine resources and is one of the key provinces for the construction of blue granary in China. This paper analyzes the development characteristics of the international blue granary industry powerhouses, the United States and Norway, and the domestic blue granary industry powerhouses, Shandong and Fujian, comparing and analyzing the main problems faced by the development of blue granary industry in Guangdong Province, such as insufficient level of scientific and technological innovation, low level of community participation and lack of supervision and management, and drawing on the initiatives and experience of the construction of the blue granary at home and abroad, it proposes promote the transformation and upgrading of the fisheries industry, promote the development of the marine tertiary industry; improve the capacity of fisheries science and technology research and development, accelerate the transformation of scientific and technological achievements in fisheries; play the role of fisheries associations to guide the masses to participate consciously; improve the legal management system, integration of management institutions intelligence and other suggestions for improvement. [ABSTRACT FROM AUTHOR]

【Objective】The bHLH transcription factor family is an important family of transcription factors in eukaryotes, which plays an important role in plant growth and development, secondary metabolism and stress response. Analysis of the response pattern of bHLH transcription factor gene OsbHLH109 (LOC_Os01g67480) to stress and hormones in rice (Oryza sativa L.) could provide a theoretical basis for further researches on the functions of OsbHLH109 in stress and hormone responses.【Method】The bioinformatics of OsbHLH109 was analyzed, and the expression patterns of OsbHLH109 in different tissues of Rice Zhonghua 11 under different hormone and abiotic stresses were analyzed by quantitative PCR (qRT-PCR).【Result】The encoding region of OsbHLH109 was 1 164 bp in length, containing 6 exons and encoding 388 amino acids, which was a bHLH transcription factor containing a conserved domain of HLH. Phylogenetic analysis showed that OsbHLH109 was closely related to the homologous proteins in monocots and Dicotyledones. The analysis of cisacting elements showed that the promoter region of OsbHLH109 contained 24 plant hormone response cis-elements and 25 environmental stress response cis-elements. The qRT-PCR analysis showed that OsbHLH109 was expressed in roots, stems, leaves and young panicles of rice, but the expression level was the highest in leaves. The results of hormone treatment response expression profile analysis showed that the response expression differences of OsbHLH109 in leaves to 6-Benzylaminopurine (6-BA), indole acetic acid (IAA), gibberellic acid (GA3) and abscisic acid (ABA) treatments all reached significant levels. The results of stress treatment response expression profile analysis showed that the response of OsbHLH109 to low temperature stress, drought stress, high temperature stress and salt stress were significantly different in leaves, indicating that the expression of OsbHLH109 was induced by 6-BA, GA3, IAA, ABA, high temperature, low temperature, PEG6000 and NaCl, which suggested that OsbHLH109 was essential for the abiotic stress responses in rice.【Conclusion】Rice OsbHLH109 is a member of the bHLH transcription factor family and is highly expressed in leaves. The expression of OsbHLH109 gene is regulated by high temperature, low temperature and salt stress, and responds to hormone signals such as 6-BA, IAA, GA3 and ABA. It is predicted that it may be involved in abiotic stress response of rice through ABA and other hormone signal transduction pathways. [ABSTRACT FROM AUTHOR]

BACKGROUND: It has been shown that muscle elasticity changes in patients with knee osteoarthritis, but most of the current studies have focused on the assessment of muscle tone and muscle strength. Changes in the elasticity of the quadriceps and its tendons in patients with knee osteoarthritis have rarely been reported. OBJECTIVE: To investigate the characteristics of the elastic modulus of the quadriceps femoris and its tendons in patients with knee osteoarthritis and to analyze its relationship with knee pain and function, thereby providing some basis for the prevention and treatment of knee osteoarthritis. METHODS: The elasticity of the quadriceps femoris and its tendons was measured by shear wave elastography in 30 patients with clinically confirmed knee osteoarthritis (knee osteoarthritis group) and 28 healthy individuals without knee pain (control group). The Western Ontario and McMaster University Osteoarthritis Index (WOMAC) was used for knee pain and function assessments in both groups. Changes in the modulus of elasticity of the quadriceps were compared between the two groups. The correlation between the elastic modulus of the quadriceps muscle and the WOMAC score was statistically analyzed. RESULTS AND CONCLUSION: (1) The thickness of the rectus femoris, middle femoris, medial femoris, lateral femoris and quadriceps tendon was less in the knee osteoarthritis group than in the control group. The elastic modulus of the lateral femoris was significantly higher in the knee osteoarthritis group than in the control group (P < 0.05). (2) The elastic modulus of muscles that was characteristically different from the control group was selected for correlation analysis. The elastic modulus of the lateral femoris in the knee osteoarthritis group showed a low linear correlation with the WOMAC pain scale (r=0.367, P < 0.05). In the self-reported pain scale, the elastic modulus of the lateral femoris in patients with knee osteoarthritis was only moderately linearly positively correlated with pain level during going up/downstairs (r=0.584, P < 0.05). In the self-reported functional impairments scale, patients with knee osteoarthritis showed a moderate linear correlation between the elastic modulus of the lateral femoris and the function when going downstairs and getting up from a seat (r=0.411, P < 0.05; r=0.464, P < 0.05). (3) From the above, an increased stiffness of the lateral femoris may be a characteristic change in the quadriceps muscle of patients with knee osteoarthritis. This in turn reflects the pain and function of the knee joint during increased loading. Further research is needed to investigate the significance of the modulus of elasticity in assessing the condition and outcome of patients with knee osteoarthritis, so as to achieve the precise rehabilitation treatment. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Beijing University of Technology is the property of Journal of Beijing University of Technology, Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Agronomica Sinica is the property of Crop Science Society of China and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

目的 探讨智能信息化小药柜管理模式在单病区多专科药品管理中的应用效果. 方法 采用 药品信息化储存、药品基数化,流程优化管理,定时优化呆滞药品措施进行小药柜信息化管理,比较实施前 (2021年2-5 月)和实施后(2021 年 6-9 月)病区各专科二级小药柜药品数量、盘点时间及损耗情况等. 结果 实施智能信息化小药柜管理模式后病区各专科二级小药柜药品数量、盘点时间、耗损率均明显低于实施 前,且护士满意度明显提高,差异均有统计学意义(P<0.05). 结论 智能信息化小药柜模式能精细化管理病 区各专科二级小药柜,不仅可提高护理工作效率,减轻护理工作量,减少耗损,还能保证临床治疗用药安全,实 现药房的智慧化管理 [ABSTRACT FROM AUTHOR]

Wheel torques of vehicles driven by hub motors are independently controllable with rapid dynamic response and redundant configuration of drive system, which have significant advantages in integrated vehicle dynamics control. However, the complex driving conditions and high power demand are likely to cause temperature-rise fault of the motor, which can ultimately affect driving efficiency. To investigate the temperature fault diagnosis of hub motor and the torque distribution strategy of each wheel under the temperature expiration condition, and ensure the stability and power performance of the vehicle, the fuzzy logic detection algorithm was designed to diagnose the temperature fault of the motor, and the temperature failure factor was proposed to quantify the failure state of the hub motor. The longitudinal and lateral force requirements were calculated according to the expected speed and front wheel angle, and the fault tolerant control strategy was designed to achieve the optimal distribution of torque reconstruction. The proposed algorithm was verified on a prototype vehicle. The results show that the fault diagnosis module and the solution strategy can judge the motor failure state in time and reconstruct the torque distribution, which improves the driving safety and achieves the coordinated control of the vehicle dynamics and stability. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Chinese Mass Spectrometry Society is the property of Journal of Chinese Mass Spectrometry Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Angle Health Law Review is the property of Angle Publishing Co., Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of South Architecture / Nanfang Jianzhu is the property of South Architecture Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chemical Engineering (China) / Huaxue Gongcheng is the property of Hualu Engineering Science & Technology Co Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Telecommunication Engineering is the property of Telecommunication Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Computer-Aided Design & Computer Graphics / Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Refrigeration is the property of Journal of Refrigeration Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Angle Health Law Review is the property of Angle Publishing Co., Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Precious Metals / Guijinshu is the property of Precious Metals Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Forensic Medicine / Fayixue Zazhi is the property of Journal of Forensic Medicine Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Electrochemistry is the property of Journal of Electrochemistry Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Soil erodibility parameter and critical shear stress are important indicators to evaluate the degree of soil erosion sensitivity and the resistance to the shear deformation of water flow. To date, the change of soil erodibility parameter and critical shear stress is unclear in the rill erosion process of saturated loess soil slope. In this study, the maximum rill detachment rates of saturated loess soil slope were determined by a series of soil scouring experiments in the laboratory under different slopes (5°, 10°, 15°, and 20°) and flow rates (2, 4, and 8 L/min). Then, the numerical, modified numerical, and analytical approaches were utilized to calculate the soil erodibility parameters and critical shear stresses. The results showed that the maximum rill detachment rates calculated by the three methods increased with the increase of slope and flow rate over saturated loess soil slope, and the maximum rill detachment rates calculated by the modified numerical method were similar with those calculated by the analytical method. The soil erodibility parameters were 0.470, 0.278, and 0.256 s/m, respectively, and the critical shear stresses were 1.502, 1.306, and 1.367 N/m², respectively. The modified numerical method improved the calculation accuracy, thus the modified numerical calculation was close to the theoretical value calculated by the analytical method. The soil erodibility parameters of saturated loess soil slope decreased by 16.83%, and the critical shear stresses decreased by 66.97%, compared with those of non-saturated loess soil slope in the same study area. Soil saturation had no significant effect on the soil erodibility parameters, while greatly reducing soil critical shear stress, and then leading to serious soil erosion on loess soil slope. Besides, the critical shear stresses of the saturated loess soil slope were 6.38% larger than those of the saturated purple soil slope, and the soil erodibility parameters of the saturated loess soil slope were 2.26 times those of the saturated purple soil slope. These results indicated that the soil saturation had similar effects on the critical shear stress of the two soils, while the saturated loess soil was more sensitivity on soil erosion than the saturated purple soil. These findings can provide some references to optimize the rill erosion model parameters in different soil slopes under the condition of saturations. [ABSTRACT FROM AUTHOR]

Synthetic cannabinoids (SCs) are a series of structurally related analogs continually created to evade surveillance and sanction, which pose more severe hazards compared with traditional marijuana. Currently, synthetic cannabinoids have become the most diverse and widely abused classes of new psychoactive substances (NPS). Considering the serious threat posed by these substances, our country has regulated all categories of synthetic cannabinoids since July 1, 2021, which means that the establishment of rapid screening strategies of synthetic cannabinoids shall be further promoted. Here, a method of ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was developed for the simultaneous determination of 112 synthetic cannabinoids in hair. The hair samples were firstly extracted with methanol, and the supernatant was taken for injection. Then 0.1% formic acid aqueous solution and 0.1% formic acid acetonitrile solution were used as mobile phase, and the ACQUITY UPLC BEH C18 chromatographic column was used for separation. The samples were analyzed under the scheduled MRM mode through two or three ion channels specially selected for each compound with optimized collision energy. A major challenge in this experiment is the differentiation of isomers or synthetic cannabinoids with a similar mass number especially for the mass spectrometry, so the optimization of chromatographic conditions was thoroughly investigated, and a general chromatographic method for the 112 synthetic cannabinoids and two complementary methods for isomers were finally determined. The methodological validation results showed that the detection limits of 112 synthetic cannabinoids ranged from 0.5 to 5 ng/g, the linear correlation coefficient (r) was better than 0.999 0, and the matrix effect and extraction recovery were 81.0%-117.8% and 80.4%-119.7% with different concentration levels (1, 5, 25, 100 ng/g), respectively. Finally, fifteen hair samples in actual cases were detected by this method and the results showed that five kinds of synthetic cannabinoids were identified and quantified with the contents range of 1.4-48.2 ng/g. Furthermore, the results also exhibited minimal background interference in chromatograms of actual samples, indicating that this established strategy has high quantitative accuracy and can be widely used in the qualitative and quantitative analysis of practical cases. In addition, the method has high efficiency in high-throughput screening, which can simultaneously identify all kinds of synthetic cannabinoids reported in China so far. [ABSTRACT FROM AUTHOR]

Copyright of China Harbour Engineering is the property of Editorial Office of China Harbour Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of South Architecture / Nanfang Jianzhu is the property of South Architecture Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Food Research & Development is the property of Food Research & Development Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Northeastern University (Natural Science) is the property of Dongbei Daxue Xuebao and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Clean Coal Technology is the property of Clean Coal Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Architectural Journal / Jian Zhu Xue Bao is the property of Architectural Journal Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)