Chengjun Dai

Second Affiliated Hospital & Yuying Children's Hospital of Wenzhou Medical University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Chaoban Wang

Second Affiliated Hospital & Yuying Children's Hospital of Wenzhou Medical University

Xiaoou Shan

Wenzhou Medical University

Jieqi Qian

Second Affiliated Hospital of Zhejiang University

Zishuo Liu

Second Affiliated Hospital & Yuying Children's Hospital of Wenzhou Medical University

Zhichao Zheng

Zhejiang Chinese Medical University

Youli Li

University of California, Santa Barbara

Rengcheng Qian

Second Affiliated Hospital & Yuying Children's Hospital of Wenzhou Medical University

Fang-Qin Xia

Second Affiliated Hospital & Yuying Children's Hospital of Wenzhou Medical University

Xiangxi Qin

Donghua University

Yazhou Zhao

Hohai University

Cooperative Institutions

Second Affiliated Hospital & Yuying Children's Hospital of Wenzhou Medical University

Wenzhou Medical University

Sichuan University

Chinese Academy of Sciences

Children's Hospital of Pittsburgh

University of Pittsburgh

Weatherford College

Xuzhou Medical College

Nantong Science and Technology Bureau

Merck & Co., Inc., Rahway, NJ, USA (United States)

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Photovoltaic Power System Simulation based on MATLAB/Simulink Software

Proceedings of the 2018 7th International Conference on Energy and Environmental Protection (ICEEP 2018) (2017)

Yaqin Guo Xin Song Chengjun Dai

Abstract：Photovoltaic power is increasingly concerned in the field of new energy.Photovoltaic modules simulation can provide theoretical basis for photovoltaic power system.In the paper, it is introduced that, construct testing model, draw output curve, set different parameters in the model, and process the output data, then obatin I Uand U Pcurves in the different parameters.It was proven that integrated design of photovoltaic power system can be obtained using MATLAB/Simulink software.

10.2991/iceep-17.2017.125

Cite

Citations (0)

Lowe syndrome with extremely short stature: growth hormone deficiency may be the pathogeny

Growth Factors (2019)

Chengjun Dai Liying Wang Youli Li Zhichao Zheng Jieqi Qian

Lowe syndrome is an x-linked disorder characterized by congenital cataracts, nervous system abnormalities and renal tubular dysfunction. With the rising number of reported cases, more patients are found to suffer from endocrine abnormalities. Hereby, three Chinese patients with typical symptoms and extremely short stature were described. The OCRL gene was analyzed. A combination of blood biochemistry and radiological examinations were performed. Growth hormone provocation test was taken in one patient. Nucleotide sequence analysis revealed a de novo novel hemizygous mutation (c.2290_2291delinsCT) in exon 21 in an adolescent boy. As indicated by the growth hormone provocation test, the boy had growth hormone deficiency. The other two patients were brothers with extremely short stature, and manifested the same hemizygous mutation (c.2581G > A) in exon 23. It was speculated that the mutation of OCRL gene could lead to deficiency of growth hormone, for which an early growth hormone intervention may be beneficial.

10.1080/08977194.2019.1669589

Cite

Citations (4)

Age and Gender-Specific Reference Intervals for Uric Acid Level in Children Aged 5–14 Years in Southeast Zhejiang Province of China: Hyperuricemia in Children May Need Redefinition

Frontiers in Pediatrics (2021)

Chengjun Dai Chaoban Wang Fang-Qin Xia Zishuo Liu Yiqi Mo

Context: Hyperuricemia is defined when the plasma uric acid concentration is above 416 μmol/L (7 mg/dl) in male adults, or 357 μmol/L (6 mg/dl) in female adults. However, there are no explicit criteria yet for children. Objective: It is necessary to set up reference intervals for the uric acid level in different age groups among children. Materials and Methods: A total of 5,439 individuals (3,258 males, 2,181 females) were included in the final statistical analysis. Reference values of all age groups were determined by statistical descriptions. Multiple linear regression analysis was applied to determine the relationship between uric acid level, BMI, and age. Results: The level of uric acid increased with age. Gender differences in uric acid level occurred after the onset of puberty. Additionally, linear regression revealed a positive correlation between the uric acid level and BMI. Discussion and Conclusion: The reference range of the uric acid level in children is inconsistent with the previous viewpoint. Body mass index plays an important role in uric acid metabolism.

Reference range

10.3389/fped.2021.560720

Cite

Citations (26)

Thermal Performance Analysis on the Seasonal Heat Storage by Deep Borehole Heat Exchanger with the Extended Finite Line Source Model

Energies (2022)

Xiangxi Qin Yazhou Zhao Chengjun Dai Jian Wei Dahai Xue

Deep borehole heat exchanger is promising and competitive for seasonal heat storage in the limited space underground with great efficiency. However, seasonal heat storage performance of the essentially deep borehole heat exchanger reaching kilometers underground was seldom studied. In addition, previous research rarely achieved comprehensive assessment for its thermal performance due to seasonal heat storage. Insight into the complicated heat transfer characteristics during the whole process of prior charging and subsequent discharging of deep borehole heat exchanger is in urgent need to be clarified. To this end, an extended finite line source model is proposed to investigate thermal performance of the deep borehole heat exchanger during charging and discharging stages. It is developed with modifications of classical finite line source model to consider the spatio-temporally non-uniform distribution of heat flux density and anisotropic thermal conductivity of deep rock. In general, simulation results demonstrate that thermal performance of the deep borehole heat exchanger deteriorates rapidly both during charging and discharging stages, making it impossible to sustain long-term efficient operation. Specifically, it was discovered that low temperature heat storage utilized only upper section of the borehole as effective heat storage section, and enhancement for heat extraction potential during the heating season was not significant. While high temperature heat storage by deep borehole heat exchanger could only enhance the heat extraction potential for 30 to 40 days in the initial stage of heating. Throughout the discharging, maximum thermal performance enhancement up to 11.27 times was achieved and the heat storage efficiency was evaluated at 2.86 based on average heat exchange rate. The findings of this study are intended to provide a guidance for decisionmakers to determine the most suitable seasonal heat storage strategy for the deep borehole heat exchanger and facilitate the application in engineering practice.

Line source

10.3390/en15228366

Cite

Citations (4)

Prognostic and immunological significance of peroxisome proliferator-activated receptor gamma in hepatocellular carcinoma based on multiple databases

Translational Cancer Research (2022)

Chaoban Wang Shiwen Yu Rengcheng Qian Shaohe Chen Chengjun Dai

Peroxisome proliferator-activated receptor gamma (PPARG) plays some roles in preventing liver disease progression to hepatocellular carcinoma. However, there is limited information about the function of PPARG of in hepatocellular carcinoma. This study aimed to determine the significance of PPARG in immunological response and as a biomarker for hepatocellular carcinoma survival.We investigated the expression, prognosis, Kyoto Encyclopedia of Genes and Genomes/Gene Ontology biological process enrichment, and immune significance of PPARG using data from three databases-The Cancer Genome Atlas, International Cancer Genome Consortium, and Gene Expression Omnibus-through bioinformatics analysis as well as experimental verification in proliferation function of PPARG in HepG2 cell.High PPARG expression in hepatocellular carcinoma tissues positively correlated with TP53 mutation, and predicted poor prognosis. The results of enrichment and immune infiltration showed that PPARG negatively correlated with the complement system and macrophage infiltration, and laboratory results support that PPARG regulate proliferation of HepG2 cell.PPARG is upregulated in hepatocellular carcinoma and it correlates with a worse prognosis. Moreover, PPARG may play an important role in the cell proliferation, complement system and immune cell infiltration in hepatocellular carcinoma.

10.21037/tcr-21-2853

Cite

Citations (4)

Storage Device Performance Prediction with Hybrid Regression Models

Chengjun Dai Guiquan Liu Lei Zhang Enhong Chen

Today's storage systems and database systems are highly complex and configurable, which makes storage management intricate and costly. One critical aspect of storage management, particularly in large storage infrastructures (e.g. cloud storage), is to determine which application data sets to store on which devices. With a mechanism which has the ability to predict the performance of the storage device for any given workload, administrator could automate this process. Therefore, storage device performance prediction has become a critical aspect of self-managed storage systems. To this end, we propose a general smoothing hybrid model (namely SRT-SVR) which combines regression tree (RT) and support vector regression (SVR) to accurately model storage device performance. With this new method, the advantages of the two techniques (i.e. RT and SVR) are completely amalgamated to obtain a more accurate and efficient model without compromising prediction time. In addition, we propose a new workload characterization method which can describe request more accurately. Experiments show that SRT-SVR method and the characterization method used in the storage device modeling can produce more accurate and stable predictions than RT and SVR.

Performance Prediction

Storage model

Converged storage

System administrator

Cloud storage

10.1109/pdcat.2012.126

Cite

Citations (6)

Cardiac dysfunction associated with consumptive hypothyroidism in a case of hepatic haemangioma

Endokrynologia Polska (2021)

Zhichao Zheng Youli Li Liying Wang Chengjun Dai Jieqi Qian

Not required for Clinical Vignette.