21 results for "Keyan Li"
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Clinical Application of Robot-assisted Teleultrasound
With the development of network technology and intelligent robot technology, Robot-assisted teleultrasound has played an important role in clinical fields. The application of real-time remote ultrasound technology has made the ultrasonic diagnosis break through the limitation of time and space…
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Can Land Circulation Improve the Health of Middle-Aged and Older Farmers in China?
Compared with the urban aging population, the rural aging population in China is larger, and is subject to a lower per capita income, lower social security coverage, and insufficient security capacity. Therefore, ensuring the health of middle-aged and older farmers is an inevitable requirement for…
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Mechanism and application of spatial-temporal characteristics of regional frequency in low inertia power system
It’s a trend for high-penetration renewable energy to participate in frequency regulation in low inertia power system, however the fluctuation of weather makes renewable energy variable in its frequency support capacity, resulting in an obvious spatial–temporal characteristics of node frequency…
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Resveratrol’s neural protective effects for the injured embryoid body and cerebral organoid
Abstract Objective Resveratrol (RSV) is a polyphenol compound found in grapes, veratrum and other plants. It has been reported that RSV has anti-inflammatory, anti-oxidant, anti-cancer and other pharmacological effects. However, the impacts of RSV on development of nervous system are not understood…
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Target magnetic moment orientation estimation method based on full magnetic gradient orthonormal basis function
Magnetic anomaly detection (MAD) is an effective method to detect the existence and localization of magnetic targets. Magnetic signal processing technology can extract target signals from complex background noise. However, traditional magnetic signal processing methods cannot greatly improve the…
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Unraveling Seasonal Dynamics of Dissolved Organic Matter in Agricultural Ditches Using UV-Vis Absorption and Excitation–Emission Matrix (EEM) Fluorescence Spectroscopy
Seasonal dynamics of dissolved organic matter (DOM) in agricultural ditches significantly impact carbon cycling and water quality in connected rivers. This study aimed to characterize seasonal variations in DOM composition and dynamics within hierarchical agricultural ditch systems in Tianjin…
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An Adaptive Alternating Magnetic Interference Suppression (AAIS) Algorithm for Geomagnetic Vector Measurement
To achieve high-precision vector measurement values in a geomagnetic field, it is necessary to develop methods for overcoming alternating magnetic interference (AMI), which is generated by electrical equipment. This paper proposes the adaptive alternating magnetic interference suppression (AAIS)…
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Bcl-2-associated athanogene 3(BAG3) is associated with tumor cell proliferation, migration, invasion and chemoresistance in colorectal cancer
Abstract Background CRC is one of the most common malignancies worldwide, and its molecular mechanisms remain unclear. Elevated levels of BAG3 have been reported in various tumors. The present study aimed to explore the expression and function of BAG3 in CRC. Methods BAG3 protein expression was…
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Urban expansion, economic development, and carbon emissions: Trends, patterns, and decoupling in mainland China’s provincial capitals (1985–2020)
In 2020, the Chinese government set the objective of achieving carbon neutrality, making it essential to understand the urbanization process in order to effectively implement future sustainable development strategies. Here, we demonstrate the urbanization development of 31 provincial capitals in…
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Pilot Study of Robot-Assisted Teleultrasound Based on 5G Network: A New Feasible Strategy for Early Imaging Assessment During COVID-19 Pandemic
Early diagnosis is critical for the prevention and control of the coronavirus disease 2019 (COVID-19). We attempted to apply a protocol using teleultrasound, which is supported by the 5G network, to explore the feasibility of solving the problem of early imaging assessment of COVID-19. Four male…
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Autonomous dispatch trajectory planning of carrier-based vehicles: An iterative safe dispatch corridor framework
As carrier aircraft sortie frequency and flight deck operational density increase, autonomous dispatch trajectory planning for carrier-based vehicles demands efficient, safe, and kinematically feasible solutions. This paper presents an Iterative Safe Dispatch Corridor (iSDC) framework, addressing…
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Linc-UROD stabilizes ENO1 and PKM to strengthen glycolysis, proliferation and migration of pancreatic cancer cells
Pancreatic cancer (PC) is a fatal malignancy, threatening human health in worldwide. Long non-coding RNAs (lncRNAs) have been acknowledged to be essential regulators in various biological processes of human cancers. However, the role of some novel lncRNAs in PC remain to be explored. In this study…
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Robot-assisted Teleultrasound-guided Hemostasis and Hematoma Catheterization and Drainage for Osteoporosis Pelvic Fracture with Giant Hematoma and Active Bleeding
This paper reports a case of closed reduction internal fixation of pelvic fracture and minimally invasive hemostasis procedure and hematoma catheterization and drainage for the active pelvic bleeding site and giant hematoma, guided by a robot-assisted teleultrasound. In this case, the…
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Synthesis and Biological Evaluation of Novel Allobetulon/Allobetulin–Nucleoside Conjugates as AntitumorAgents
Allobetulin is structurally similar tobetulinic acid, inducing the apoptosis of cancer cells with low toxicity. However, both of them exhibited weak antiproliferation against several tumor cell lines. Therefore, the new series of allobetulon/allobetulin–nucleoside conjugates 9a–10i were designed…
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IRF7-deficient MDBK cell based on CRISPR/Cas9 technology for enhancing IBRV replication
Infectious bovine rhinotracheitis (IBR), characterized by acute respiratory lesions in cattle, is a major infectious disease caused by bovine alphaherpesvirus-1 (BoAHV-1). Control of this disease is primarily depending on vaccination. Madin-Darby bovine kidney cells (MDBK) being the main host cells…
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Synergies between radiotherapy and immunotherapy: a systematic review from mechanism to clinical application
The combination of radiation therapy (radiotherapy) with immunotherapy is changing the landscape of cancer treatment. Radiation damage tumor cell DNA through high-energy rays directly causes cell death or growth arrest; Immunotherapy works by boosting a patient’s own immune system’s ability to…
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Robot-assisted Teleultrasound Assessment of Cardiopulmonary Function on a Patient with Confirmed COVID-19 in a Cabin Hospital
Real-time ultrasound imaging has been used for the evaluation of pulmonary abnormalities and other complications during the outbreak of COVID-19. However, conventional ultrasound examination requires operators to conduct scanning either in the examination room or patient ward, which may increase…
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Identification of novel TMEM231 gene splice variants and pathological findings in a fetus with Meckel Syndrome
Background: Meckel Syndrome (MKS, OMIM #249000) is a rare and fatal autosomal recessive ciliopathy with high clinical and genetic heterogeneity. MKS shows complex allelism with other related ciliopathies such as Joubert Syndrome (JBTS, OMIM #213300). In MKS, the formation and function of the…
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Aspiration Pneumonia Caused by Neuromyelitis Optica in a Patient with Suspected COVID-19
Neuromyelitis optica spectrum disorder (NMOSD) is an idiopathic autoimmune inflammatory disorder which is characterized by central nervous system (CNS) demyelinating. Common symptoms of area postrema clinical syndrome (APS) include intractable hiccup, nausea and vomit which may lead to aspiration…
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Suggestions on Prevention and Control of COVID-19 in Ultrasound Department
Although the outbreak in China has been effectively controlled, the international situation of prevention and control of coronavirus disease 2019 (COVID-19) still poses a serious public health risk. COVID-19 has been declared a pandemic by World Health Organization (WHO) due to its highly…