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 "Li, Heng"
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Progress of Geodesy Related Ionosphere from Chinese Scientists in the Period of 2019—2023

Publication Type: Academic Journal

Source(s): Journal of Geodesy and Geoinformation Science, Vol 6, Iss 3, Pp 115-123 (2023)

Abstract: The ionosphere is the ionized part of the upper atmosphere of the Earth, which plays an important role in atmospheric electricity and forms the inner edge of the magnetosphere. It influences radio propagation significantly, such as the Global Navigatio...

Development and prospect of anti-torpedo technology

Publication Type: Academic Journal

Source(s): Zhihui kongzhi yu fangzhen, Vol 45, Iss 5, Pp 25-29 (2023)

Abstract: Torpedoes are one of the main threats faced by surface ships and submarines in modern naval warfare. How to defend torpedoes has always been a hot and difficult issue in various countries. This paper analyzes the working principle, technical characteri...

Effects of the COVID-19 Pandemic on Obsessive-Compulsive Symptoms Among University Students: Prospective Cohort Survey Study

Publication Type: Academic Journal

Source(s): Journal of Medical Internet Research, Vol 22, Iss 9, p e21915 (2020)

Abstract: BackgroundThe COVID-19 pandemic is associated with common mental health problems. However, evidence for the association between fear of COVID-19 and obsessive-compulsive disorder (OCD) is limited. ObjectiveThis study aimed to examine if fear of negati...

Safety and efficacy of enterprise stenting for symptomatic atherosclerotic severe posterior circulation stenosis

Publication Type: Academic Journal

Source(s): European Journal of Medical Research, Vol 28, Iss 1, Pp 1-10 (2023)

Abstract: Abstract Purpose To investigate the safety and efficacy of Enterprise stent angioplasty and risk factors for the prognoses in treating symptomatic severe posterior circulation atherosclerotic stenosis (SSPCAS). Materials and methods Patients with SSPCA...

Study on Multispectral Characterization and Pyrolysis Mechanism of Modified HTPE and HTPB

Publication Type: Academic Journal

Source(s): Zhipu Xuebao, Vol 44, Iss 4, Pp 476-485 (2023)

Abstract: Hydroxyl-terminated polybutadiene/polyether (HT-PB/PE), serving as binders and fuel for rocket propellants, has been widely studied and applied. To meet the developing demand of industrialization, the modification of HT-PB/PE based on their structural ...

Bioinformatics prediction and experimental verification identify cuproptosis-related lncRNA as prognosis biomarkers of hepatocellular carcinoma

Publication Type: Academic Journal

Source(s): Biochemistry and Biophysics Reports, Vol 35, Iss , Pp 101502- (2023)

Abstract: Cuproptosis is a form of cell death caused by intracellular copper excess, which plays an important regulatory role in the development and progression of cancers, including hepatocellular carcinoma (HCC), a prevalent malignancy with high morbidity and ...

Comparing between steady-state excitonic transitions and ultrafast polaronic photoexcitations in layered perovskites: the role of electron–phonon interaction

Publication Type: Academic Journal

Source(s): Nanophotonics, Vol 12, Iss 11, Pp 1965-1977 (2023)

Abstract: We have studied four 2D layered perovskites, including OA2PbI4 (RP phase), ODAPbI4 and BDAPbI4 (DJ phase), (GA)MAPbI4 (ACI phase), where OA is [(CmH2m+1)NH3](m = 8), ODA is [NH3(CH2)mNH3](m = 8), BDA is [NH3(CH2)mNH3](m = 4), and GA is [C(NH2)3]; RP, D...

Ameliorative Effect and Mechanism of Chitooligosaccharides on Hydrogen Peroxide-Induced Injury in Hepatic Cells

Publication Type: Academic Journal

Source(s): Shipin Kexue, Vol 44, Iss 5, Pp 136-142 (2023)

Abstract: The ameliorative effect of chitooligosaccharides (COS) on hydrogen peroxide (H2O2)-induced injury in hepatic cells was evaluated. An oxidative stress injury model was established by stimulating L-02 cells with H2O2, and the level of reactive oxygen spe...

Flux Vector Splitting Method of Weakly Compressible Water Navier-Stokes Equation and Its Application.

Publication Type: Academic Journal

Source(s): Water (20734441). Oct2023, Vol. 15 Issue 20, p3699. 12p.

Abstract: Water is a weakly compressible fluid medium. Due to its low compressibility, it is usually assumed that water is an incompressible fluid. However, if there are high-pressure pulse waves in water, the compressibility of the water medium needs to be cons...

烘烤条件对压榨奇亚籽油中苯并\[a\]芘含量的影响Effect of roasting conditions on benzo(a)pyrene content in pressed chia seed oil

Publication Type: Academic Journal

Source(s): Zhongguo youzhi, Vol 47, Iss 12, Pp 41-45 (2022)

Abstract: 为探索不同烘烤条件下奇亚籽油中苯并\[a\]芘含量的变化规律,在不同的烘烤温度(60、100、140、180 ℃)和烘烤时间(10、30、50、70、90 min)下烘烤奇亚籽,采用液压压榨制备奇亚籽油。观察奇亚籽油色泽,并记录其气味。以MIL-101(Cr)为分散式固相萃取材料,采用分散式固相萃取-高效液相色谱-荧光检测器对苯并\[a\]芘进行定量检测。结果表明:烘烤条件对奇亚籽油的色泽、气味影响较大;随着烘烤温度的升高及烘烤时间的延长,奇亚籽油中苯并\[a\]芘含量逐渐升高,且烘烤温度越高、烘烤...