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1,427 results on '"Liu, Panpan"'

10. Hepatocyte SREBP signaling mediates clock communication within the liver

Author

Guan, Dongyin, Bae, Hosung, Zhou, Dishu, Chen, Ying, Jiang, Chunjie, La, Cam Mong, Xiao, Yang, Zhu, Kun, Hu, Wenxiang, Trinh, Trang Minh, Liu, Panpan, Xiong, Ying, Cai, Bishuang, Jang, Cholsoon, and Lazar, Mitchell A

Subjects
Chronic Liver Disease and Cirrhosis, Liver Disease, Nutrition, Digestive Diseases, Sleep Research, Genetics, Oral and gastrointestinal, Metabolic and endocrine, Sterol Regulatory Element Binding Protein 1, Nuclear Receptor Subfamily 1, Group D, Member 1, Liver, Hepatocytes, Circadian Rhythm, Communication, Epigenetics, Hepatology, Homeostasis, Metabolism, Medical and Health Sciences, Immunology
Abstract

Rhythmic intraorgan communication coordinates environmental signals and the cell-intrinsic clock to maintain organ homeostasis. Hepatocyte-specific KO of core components of the molecular clock Rev-erbα and -β (Reverb-hDKO) alters cholesterol and lipid metabolism in hepatocytes as well as rhythmic gene expression in nonparenchymal cells (NPCs) of the liver. Here, we report that in fatty liver caused by diet-induced obesity (DIO), hepatocyte SREBP cleavage-activating protein (SCAP) was required for Reverb-hDKO-induced diurnal rhythmic remodeling and epigenomic reprogramming in liver macrophages (LMs). Integrative analyses of isolated hepatocytes and LMs revealed that SCAP-dependent lipidomic changes in REV-ERB-depleted hepatocytes led to the enhancement of LM metabolic rhythms. Hepatocytic loss of REV-ERBα and β (REV-ERBs) also attenuated LM rhythms via SCAP-independent polypeptide secretion. These results shed light on the signaling mechanisms by which hepatocytes regulate diurnal rhythms in NPCs in fatty liver disease caused by DIO.

Published
2023

24. Comparative Analysis of Sensory Evaluation Methods for Qingzhuan Tea

Author

LIU Panpan, FENG Lin, ZHENG Lin, XUE Jinjin, WANG Shengpeng, WANG Xueping, YE Fei, TENG Jing, GUI Anhui, HAN Yanna, CHEN Junhai, ZHU Peng, GAO Shiwei, ZHENG Pengcheng

Subjects
qingzhuan tea, sensory evaluation, compressed tea, water extract, Food processing and manufacture, TP368-456
Abstract

To propose a sensory evaluation method suitable for Qingzhuan tea, a representative Qingzhuan tea produced in Hubei was soak or spray boiled in order to analyze the effects of different boiling conditions on the sensory quality and the leaching rate of major chemical components of Qingzhuan tea. The sensory quality and chemical components of the tea infusions were compared with those of tea infusion obtained by the brewing method specified in the Chinese national standard. The results showed that the sensory quality of the boiled tea infusion was significantly better than that of the brewed tea infusion; the leaching rates of major quality components such as water extract, tea polyphenols, amino acids, soluble sugars and tea pigments were much higher in the former than in the latter. From the perspectives of sensory quality and the leaching rate of major quality components, tea infusion prepared by boiling for 2 min with a tea/water ratio of 1:80 and then standing for 2–4 min tasted moderate and had good internal quality. Further correlation analysis showed high correlation coefficients between the leaching rates of soluble sugars, theabrownine and water extract and taste quality. The results of this study provide a reference for the objective evaluation of the sensory quality of Qingzhuan tea and other types of compressed tea.

Published
2024
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33. Spin-excitation anisotropy in the nematic state of detwinned FeSe

Author

Lu, Xingye, Zhang, Wenliang, Tseng, Yi, Liu, Ruixian, Tao, Zhen, Paris, Eugenio, Liu, Panpan, Chen, Tong, Strocov, Vladimir, Song, Yu, Yu, Rong, Si, Qimiao, Dai, Pengcheng, and Schmitt, Thorsten

Subjects
Condensed Matter - Superconductivity, Condensed Matter - Strongly Correlated Electrons
Abstract

The origin of the electronic nematicity in FeSe is one of the most important unresolved puzzles in the study of iron-based superconductors. In both spin- and orbital-nematic models, the intrinsic magnetic excitations at $\mathbf{Q}_1=(1, 0)$ and $\mathbf{Q}_2=(0, 1)$ of twin-free FeSe are expected to provide decisive criteria for clarifying this issue. Although a spin-fluctuation anisotropy below 10 meV between $\mathbf{Q}_1$ and $\mathbf{Q}_2$ has been observed by inelastic neutron scattering around $T_c\sim 9$ K ($<

Published
2021
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46. In-plane uniaxial pressure-induced out-of-plane antiferromagnetic moment and critical fluctuations in BaFe$_2$As$_2$

Author

Liu, Panpan, Klemm, Mason L., Tian, Long, Lu, Xingye, Song, Yu, Tam, David W., Schmalzl, Karin, Park, J. T., Li, Yu, Tan, Guotai, Su, Yixi, Bourdarot, Frederic, Zhao, Yang, Lynn, Jeffery W., Birgeneau, Robert J., and Dai, Pengcheng

Subjects
Condensed Matter - Superconductivity, Condensed Matter - Strongly Correlated Electrons
Abstract

A small in-plane external uniaxial pressure has been widely used as an effective method to acquire single domain iron pnictide BaFe$_2$As$_2$, which exhibits twin-domains without uniaxial strain below the tetragonal-to-orthorhombic structural (nematic) transition temperature $T_s$. Although it is generally assumed that such a pressure will not affect the intrinsic electronic/magnetic properties of the system, it is known to enhance the antiferromagnetic (AF) ordering temperature $T_N$ ($

Published
2020
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49. Optimization of operation scheme with combined BOG treatment process in LNG terminals

Author

PENG Chao, WANG Hongda, HOU Xuguang, WANG Hongshuai, Lü Hongshuang, LIU Panpan, WEI Jiaru, and CHEN Aomiao

Subjects
lng terminal, combined bog treatment process, re-condensation, high-pressure compression based export, operation power consumption, Oils, fats, and waxes, TP670-699, Gas industry, TP751-762
Abstract

Two BOG treatment processes are adopted in the Tangshan LNG terminal of PetroChina, including the recondensation and highpressure compression based export processes. However, the LNG cold energy could not be fully used if only the high-pressure compression method is used for BOG treatment in the low export condition. The booster compressor has high operation power and large energy consumption.For this reason, the combined BOG treatment scheme of the Tangshan LNG terminal was studied through the combined numerical simulation and theoretical research with the ASPEN HYSYS software. Meanwhile, the combined operation scheme of the re-condenser and booster compressor was formulated to make full use of the LNG cold energy and reduce the operating power consumption of the booster compressor. The results show that the BOG flow has a great impact on the downstream LNG temperature. To control the downstream LNG temperature change of the re-condenser, the BOG flow should be controlled at first, with the auxiliary of BOG temperature and LNG header flow control. The combined operation scheme after optimization could reduce the power consumption of the compressor by 5%-20%, so that about 9.4×105 kW·h power can be saved annually, with an obvious optimization effect. Generally, the research results could provide a theoretical reference for the calculation of the combined BOG treatment process in the LNG terminal and the formulation of the operation scheme.

Published
2023
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