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Article
Effect of exposures to multiple metals on blood pressure and hypertension in the elderly: a community-based study
A chronic disease, hypertension (HTN) is prevalent among the elderly. Exploring the factors that influence HTN and blood pressure (BP) changes is of great public health significance. However, mixed exposure to...
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Article
Open AccessPrediction of positive pulmonary nodules based on machine learning algorithm combined with central carbon metabolism data
Lung cancer causes a huge disease burden, and early detection of positive pulmonary nodules (PPNs) as an early sign of lung cancer is extremely important for effective intervention. It is necessary to develop ...
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Article
Open AccessImmune checkpoint inhibitors combined with or without radio(chemo)therapy for locally advanced or recurrent/metastatic esophageal squamous cell carcinoma
This study was designed to investigate the efficacy and prognostic factors for immune checkpoint inhibitors (ICIs) combined with or without radio(chemo)therapy and to evaluate their toxicity in patients with l...
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Article
First-Order Derivatives of Principal and Main Invariants of Magnetic Gradient Tensor of a Uniformly Magnetized Tesseroid and Spherical Shell
Similar to the gravitational curvatures in the gravity field, the magnetic curvatures (i.e., third-order derivatives of the magnetic potential) have been recently proposed in the magnetic field. The components...
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Article
Effect of SIB-IMRT-based selective dose escalation of local tumor on the prognosis of patients with esophageal cancer
To investigate the effect of SIB-IMRT-based selective dose escalation to local tumor on the prognosis of patients with esophageal cancer (EC).
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Article
First-order derivatives of principal and main invariants of gravity gradient tensor of the tesseroid and spherical shell
The invariants of gravity (or gravitational) gradient tensor can be applied as the additional internal parameters for the gravity gradient tensor, which have been widely used in the recovery of the global grav...
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Article
Open AccessTest of gravitational red-shift based on tri-frequency combination of microwave frequency links
Over the decades, testing gravitational red-shift (GRS) based on microwave links has made great process, including the GPA experiment, the planned Atomic Clock Ensemble in Space mission, and the China Space St...
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Article
An alternative geoid model for Africa using the shallow-layer method
The aim of the current investigation is to determine an alternative geoid model for Africa using the shallow-layer method. The shallow-layer method, following the basic definition of the geoid, differs essenti...
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Article
Magnetic Curvatures of a Uniformly Magnetized Tesseroid Using the Cartesian Kernels
In recent years, the gravitational curvatures, the third-order derivatives of the gravitational potential (GP), of a tesseroid have been introduced in the context of gravity field modeling. Analogous to the gr...
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Article
Development of Lee’s exact method for Gauss–Krüger projection
Lee’s exact method was developed to enable the Gauss–Krüger (GK) projection to be implemented without iterative procedures via the expansion of the intermediate map** (Thompson projection) into series approx...
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Article
Topographic effects up to gravitational curvatures of tesseroids: A case study in China
Topographic effects on gravity field modeling are important for geodesy, geophysics and related geosciences. In this study we evaluate the gravitational effects of tesseroids in spherical coordinates, includin...
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Article
Formulation of Determining the Gravity Potential Difference Using Ultra-High Precise Clocks via Optical Fiber Frequency Transfer Technique
Based on gravity frequency shift effect predicted by general relativity theory, this study discusses an approach for determining the gravity potential (geopotential) difference between arbitrary two points P and
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Article
Observations of the Singlets of Higher-Degree Modes Based on the OSE
In this study, we select 18 SG (superconducting gravimeter) records from 15 GGP stations and 99 vertical, 69 horizontal components of IRIS broad-band seismograms during 2004 Sumatra Earthquake to detect the sp...
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Article
Evaluation of Optimal Formulas for Gravitational Tensors up to Gravitational Curvatures of a Tesseroid
The forward modeling of the topographic effects of the gravitational parameters in the gravity field is a fundamental topic in geodesy and geophysics. Since the gravitational effects, including for instance th...
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Article
Evaluation of gravitational curvatures of a tesseroid in spherical integral kernels
Proper understanding of how the Earth’s mass distributions and redistributions influence the Earth’s gravity field-related functionals is crucial for numerous applications in geodesy, geophysics and related ge...
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Article
Open AccessAnalysis of the causes of failure after radical surgery in patients with PT3N0M0 thoracic esophageal squamous cell carcinoma and consideration of postoperative radiotherapy
Five-year overall survival rate of TESCC after surgery is low (approximately 30% to 60%), so it is meaningful to discuss the significance of PORT.
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Article
Open AccessDetermination of Gravitational Potential at Ground Using Optical-Atomic Clocks on Board Satellites and on Ground Stations and Relevant Simulation Experiments
The general relativity theory provides a potential way to directly determine the gravitational potential (GP) difference by comparing the running rate or vibration frequencies of two optical-atomic clocks loca...
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Article
Open AccessContemporary crustal movement of southeastern Tibet: Constraints from dense GPS measurements
The ongoing collision between the Indian plate and the Eurasian plate brings up N-S crustal shortening and thickening of the Tibet Plateau, but its dynamic mechanisms remain controversial yet. As one of the mo...
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Article
Evaluation of the fourth-order tesseroid formula and new combination approach to precisely determine gravitational potential
Calculating topographic gravitational potential (GP) is a time-consuming process in terms of efficiency. Prism, mass-point, mass-line, and tesseroid formulas are generally used to calculate the topographic GP ...
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Article
Open AccessCorrections to “A comparison of the tesseroid, prism and point-mass approaches for mass reductions in gravity field modelling” (Heck and Seitz, 2007) and “Optimized formulas for the gravitational field of a tesseroid” (Grombein et al., 2013)
