50 hasil untuk "Li-Jun Li"
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Temperature sensing based on slow light via stimulated Brillouin scattering in M-shaped few-mode fiber.
This study investigates temperature sensing based on slow light generation via stimulated Brillouin scattering in an M-shaped few-mode fiber. The temperature-dependent properties of four optical modes (LP01, LP11, LP21, and LP02) over a range from -20 °C to 80 °C are analyzed using the…
Juga tersedia di: PLOS
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Cobalt and Nickel Complexes Bearing 2,6-Bis(imino)phenoxy Ligands:Synthesis and Ethylene Oligomerization Study
A series of new cobalt and nickel complexes MLX2 (M = Co or Ni, X = Cl) bearing 2,6-bis(imino)phenoxy ligands have been synthesized. Treatment of the complexes with methylaluminoxane (MAO) leads to active catalysts for ethylene oligomerization. The oligomers are olefins from C4 to C6.
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Cobalt and Nickel Complexes Bearing 2-(2-pyridyl)-Benzimidazole: Synthesis and Ethylene Oligomerization
A series of cobalt and nickel complexes MLX2 (M=Co or Ni, X=Cl) bearing 2-(2-pyridyl)benzimidazole ligands were synthesized. Treatment of the complexes with methylaluminoxane (MAO) leads to active catalysts for ethylene oligomerization. The oligomers were olefins from C2 to C6.
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A Necessary and Sufficient Criterion for the Separability of Quantum State
Quantum entanglement has been regarded as one of the key physical resources in quantum information sciences. However, the determination of whether a mixed state is entangled or not is generally a hard issue, even for the bipartite system. In this work we propose an operational necessary and…
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Reformulating the Quantum Uncertainty Relation
Uncertainty principle is one of the cornerstones of quantum theory. In the literature, there are two types of uncertainty relations, the operator form concerning the variances of physical observables and the entropy form related to entropic quantities. Both these forms are inequalities involving…
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Study on plume evolution and influencing factors of reservoir and caprock integrity in CO2 deep saline aquifer storage: A case study of Shenhua CCS project
The plume evolution in long-term CO2 storage can cause changes in formation pore pressure, which may lead to caprock integrity failure in severe cases, posing leakage risks. Current studies on CO2 plume evolution and reservoir/caprock integrity mostly rely on single engineering and geological…
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Correlation between blood lactate level and cardiac function in patients with type 2 diabetes mellitus
"Objective To detect the blood lactate levels in patients with type 2 diabetes mellitus (T2DM) and analyze its correlation with various cardiac function indexes. Methods A cross-sectional study was conducted on 188 T2DM patients treated in the Department of Endocrinology, The Second Affiliated…
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Correlation between GA/HbA1c ratio and NAFLD complications in patients with type 2 diabetes mellitus
Objective To study the relationship between glycated albumin (GA), glycated hemoglobin (HbA1c), GA/HbA1c ratio and NAFLD in patients with type 2 diabetes and non-alcoholic fatty liver. Methods A total of 502 patients with type 2 diabetes hospitalized from February to December 2017 were divided into…
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Ensembling Variable Selectors by Stability Selection for the Cox Model
As a pivotal tool to build interpretive models, variable selection plays an increasingly important role in high-dimensional data analysis. In recent years, variable selection ensembles (VSEs) have gained much interest due to their many advantages. Stability selection (Meinshausen and Bühlmann…
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Similarity-based metric analysis approach for predicting osteogenic differentiation correlation coefficients and discovering the novel osteogenic-related gene FOXA1 in BMSCs
Background As a powerful tool, bioinformatics analysis is playing an increasingly important role in many fields. Osteogenic differentiation is a complex biological process involving the fine regulation of numerous genes and signaling pathways. Method Osteogenic differentiation-related genes are…
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Ultrasound Promoted Synthesis of 3-Carboxycoumarins in Aqueous Media
An efficient and green procedure has been developed for synthesis of 3-carboxycoumarins, the reaction can be carried out in water under ultrasound irradiation, avoiding addition of catalyst
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Innovation examples of electrocardiograph teaching mode in the time of big data
The development of a platform of clinical electrocardiograph(ECG) big data and diversified internet teaching resources brings opportunities to explore the innovation of ECG teaching mode supported by big data. By analyzing current problems of traditional ECG teaching, this article puts forward…
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Consecutive laparoscopic gallbladder and spleen resections in cirrhotic patients
AIM: To evaluate the feasibility, safety, and effectiveness of consecutive laparoscopic cholecystectomy (LC) plus splenectomy (LS) in liver cirrhosis patients. METHODS: From 2003 to 2013, 17 (group 1) patients with liver cirrhosis complicated by hypersplenism and symptomatic gallstones were treated…
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A Stronger Multi-observable Uncertainty Relation
Uncertainty relation lies at the heart of quantum mechanics, characterizing the incompatibility of non-commuting observables in the preparation of quantum states. An important question is how to improve the lower bound of uncertainty relation. Here we present a variance-based sum uncertainty…
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Effect of different types of palm oil on nutrient utilization， feces and mental state of teddy dogs
The experiment studied the effect of different types of palm oil on nutrient utilization, feces and mental state of teddy dogs. Forty-eight 2~3 months old teddy dogs of the same breed were selected and randomly divided into three groups with 16 replicates in each group, half in male and female…
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Effects of Water-in-Oil Slow-Release Coagulants Based on Fermented Soybean Whey on Gel Properties of Whole Soybean Flour
In this study, ultrafine-pulverized whole soybean flour was reconstituted in boiling water and treated by dynamic high pressure microfluidization after cooling down to ambient temperature. Four fermented soybean wheys were prepared by fermentation with Lactobacillus bulgaricus or Streptococcus…
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Is Anterior Cervical Discectomy and Fusion Superior to Corpectomy and Fusion for Treatment of Multilevel Cervical Spondylotic Myelopathy? A Systemic Review and Meta-Analysis
Objective: Both anterior cervical discectomy with fusion (ACDF) and anterior cervical corpectomy with fusion (ACCF) are used to treat cervical spondylotic myelopathy (CSM), however, there is considerable controversy as to whether ACDF or ACCF is the optimal treatment for this condition. To compare…
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Derivation and validation of soil total and extractable cadmium criteria for safe vegetable production
Determining the appropriate soil cadmium (Cd) criteria for vegetable production is important for ensuring that the Cd concentrations of the vegetables meet food safety standards. The soil extractable Cd criteria for vegetable production are also essential for both food safety and environmental…