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您的检索式：作者名="Chunqian Li"
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| 1 | Petrogenesis of Early and Late Carboniferous Volcanic Rocks in the Yining Block:Constraints from Sr-Nd Isotope显示文摘The Yining Block is located in the southwestern part of the Central Asian Orogenic Belt(CAOB),which is characterized by widespread Carboniferous volcanic rocks.Recently,we carried out the National Nature Science Foundation of China(No.41273033)and Special Fund for Basic Scientific Research of Central Colleges(No. | LI Yongjun YANG Gaoxue LI Ganyu LI Zhucang SU Chunqian WANG Zuopeng WANG Zhenyu | 2015 | Acta Geologica Sinica(English Edition)2015，89，4： | 1 |
| 2 | In-situ detection equipment for radon-in-water:unattended operation and monthly investigations显示文摘Radon is recognized as a powerful tracer of certain geophysical processes in marine and aquatic environments.In the past few decades,the instruments and methods for measuring radon concentration in water have been developed to some extent but still lack underwater in-situ measurements.Here we present an in-situ detection equipment for radon-in-water(pulsed ionization chamber(PIC)-radon)to measure dissolved radon in ocean and groundwater settings.The equipment has been successfully deployed in the Jiaozhou Bay in July 2022 and has achieved 14 d of unattended underwater in-situ observation.Then it was successfully placed in a groundwater monitoring well in the Laizhou Bay in November 2022 and monitored radon activities for over 30 d.The results showed that this instrument had a good indication of submarine groundwater discharge.The PIC-radon detector takes advantage of smaller size,lower power consumption,and is barely influenced by humidity,making it particularly suitable for long-term in-situ measurement,especially in harsh environments with limited human care or deployment spaces. | Chunqian Li Meng Li Guangquan Chen Huaming Yu Chenglun Zhang Wen Liu Jinjia Guo Shibin Zhao Lijun Song Xiliang Cui Ying Chai Lu Cao Diansheng Ji Bochao Xu | 2023 | Acta Oceanologica Sinica2023，42，8： | 0 |
| 3 | Measuring^(222)Rn in aquatic environment via Pulsed Ionization Chamber Radon Detector显示文摘Radon(Rn)is a naturally occurring radioactive inert gas in nature,and^(222)Rn has been routinely used as a powerful tracer in various aquatic environmental research on timescales of hours to days,such as submarine groundwater discharge.Here we developed a new approach to measure^(222)Rn in discrete water samples with a wide range of^(222)Rn concentrations using a Pulsed Ionization Chamber(PIC)Radon Detector.The sensitivity of the new PIC system is evaluated at 6.06 counts per minute for 1 Bq/L when a 500 mL water sample volume is used.A robust logarithmic correlation between sample volumes,ranging from 250 mL to 5000 mL,and system sensitivity obtained in this study strongly suggests that this approach is suitable for measuring radon concentration levels in various natural waters.Compared to the currently available methods for measuring radon in grab samples,the PIC system is cheaper,easier to operate and does not require extra accessories(e.g.,drying tubes etc.)to maintain stable measurements throughout the counting procedure. | Lijun Song Wen Liu Shibin Zhao Chunqian Li Jinjia Guo Natasha Dimova Bochao Xu | 2023 | Acta Oceanologica Sinica2023，42，8： | 0 |
| 4 | Characteristic and effect analysis of protein and peptide in Cantonese cured meat processing显示文摘The aim of this work was to explore the physicochemical and structural properties,lipid oxidation and antioxidant capacity of the peptides extracted from Cantonese cured meat and as well as to investigate the effect of drying time on the sarcoplasmic and myofibrillar proteins of Cantonese cured meat.The results suggested that salting out,protein oxidation and heat treatment were closely related to surface hydrophobicity and the secondary structure of peptides was changed by processing.And the peroxide value and the value of tributyltin compounds were different in evaluating the degree of lipid oxidation.Glu and His were the major amino acid.The approximate molecular weights of the sarcoplasmic proteins and myofibrillar proteins ranged from 31 kDa to 50 kDa and 66 kDa,respectively.The results indicated that reducing the levels of protein oxidation and improvement of the antioxidant properties should be of great interest to preserve the nutritional quality of meat products and prolong preservation period. | Zhi Qu Chunqian Feng Ruiling Li Nan Liu Shanqing Zheng | 2022 | Food Science and Human Wellness2022，11，5： | 0 |
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