Guofeng Zhang
Biographic Data
| ID | 5597227 |
|---|---|
| NAME | Guofeng Zhang |
| GIVEN NAMES | Guofeng |
| FAMILY NAME | Zhang |
| SIGNATURE | ZHANG G |
| AFFILIATIONS | Hebei University of Economics and Business |
| ORCID | 0009-0009-9473-7807 |
| VERIFIED | Yes |
| TOTAL WORKS | 11 |
| TOTAL CITATIONS | 8 |
| AUTHOR COUNT | 11 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2022 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 2 |
Proactive Health
Against the backdrop of population aging and changing family structures in China, research on older adults' agentic health practices remains relatively limited. This study employs participant observation and in-depth interviews, drawing on the culture-centered approach, to examine the differential health practices reflected in the health narratives of elderly residents in care institutions. The findings suggest that, in the face of health issues,…
Dual-pathway protection
Objective This study investigates the dual-pathway mechanism through which physical activity mitigates problematic smartphone use (PSU) among Chinese college students, examining the mediating role of social anxiety and the moderating effects of physical activity within a stress-PSU framework. Methods General stress theory was introduced to explore the intrinsic mechanisms by which perceived stress influences PSU. A total of 2,905 undergraduate st…
Can China’s transfer payment in national key ecological function zones promote green poverty reduction? Quasi-natural experiment evidence from China
Experimental Conditions for 14 C Graphite Preparation at the Gxnu Lab, China
As a required sample preparation method for 14 C graphite, the Zn-Fe reduction method has been widely used in various laboratories. However, there is still insufficient research to improve the efficiency of graphite synthesis, reduce modern carbon contamination, and test other condition methodologies at Guangxi Normal University (GXNU). In this work, the experimental parameters, such as the reduction temperature, reaction time, reagent dose, Fe p…
Experimental Study on the Charge-Exchange Cross-Sections of Low-Energy Carbon Ions in Helium at Gxnu
Compared with nitrogen and argon, helium is lighter and can better reduce the beam loss caused by angular scattering during beam transmission. The molecular dissociation cross-section in helium is high and stable at low energies, which makes helium the prevalent stripping gas in low-energy accelerator mass spectrometry (AMS). To study the stripping behavior of 14 C ions in helium at low energies, the charge state distributions of carbon ion beams…
Sample Preparation System for Carbonate and Dic in Water at the Gxnu-Ams Laboratory
A new vacuum line to extract CO 2 from carbonate and dissolved inorganic carbon (DIC) in water was established at Guangxi Normal University. The vacuum line consisted of two main components: a CO 2 bubble circulation region and a CO 2 purification collection region, both of which were made of quartz glass and metal pipelines. To validate its reliability, a series of carbonate samples were prepared using this system. The total recovery rate of CO …
Radiocarbon and Tritium Measurements at the Gxnu-Ams Facility
A single-stage accelerator mass spectrometer (GXNU-AMS) developed for radiocarbon and tritium measurements was installed and commissioned at Guangxi Normal University in 2017. After several years of operational and methodological upgrades, its performance has been continuously improved and applied in multidisciplinary fields. Currently, the measurement sensitivity for radiocarbon and tritium is 14 C/ 12 C ∼ (3.14 ± 0.05) ×10 –15 and 3 H/ 1 H ∼ (1…
Absorption and Distribution of Ultratrace Exogenous 14 C Urea in Rats
The absorption and distribution of radiocarbon-labeled urea at the ultratrace level were investigated with a 14 C-AMS biotracer method. The radiopharmaceutical concentrations in the plasma, heart, liver, spleen, lung, kidney, stomach, brain, bladder, muscle, testis, and fat of rats after oral administration of 14 C urea at ultratrace doses were determined by AMS, and the concentration-time curves in plasma and tissues and pharmacokinetic distribu…
The role of the Belt and Road Initiative
Using Chinese Customs data for the 2007–2018 period, we investigate how Chinese exporters respond to the Belt and Road Initiative (BRI). Based on a difference‐in‐differences identification strategy, we find that the BRI causes a substantial increase in China's total exports to BRI countries at the HS‐8 digit product level, and this export‐promoting effect is due to a significant increase in export quantity. We also find that exports increase more…
C-Ams Technology and Its Applications to an Oil Field Tracer Experiment
Many waterflooding oil fields, injecting water into an oil-bearing reservoir for pressure maintenance, are in their middle to late stages of development. To explore the geological conditions and improve oilfield recovery of the most important well group of the Hu 136 block, located on the border areas of three provinces (Henan, Shandong, and Hebei), Zhongyuan Oilfield, Sinopec, central China, a 14 C cross-well tracer monitoring technology was dev…
New Sample Preparation Line for Radiocarbon Measurements at the Gxnu Laboratory
A new system for preparing 14 C samples was established for a compact accelerator mass spectrometer (GXNU-AMS) at Guangxi Normal University. This sample preparation system consists of three units: a vacuum maintenance unit, a CO 2 purification unit, and a CO 2 reduction unit, all of which were made of quartz glass. A series of radiocarbon ( 14 C) preparation experiments were conducted to verify the reliability of the system. The recovery rate of …
C-Ams Technology and Its Applications to an Oil Field Tracer Experiment
Many waterflooding oil fields, injecting water into an oil-bearing reservoir for pressure maintenance, are in their middle to late stages of development. To explore the geological conditions and improve oilfield recovery of the most important well group of the Hu 136 block, located on the border areas of three provinces (Henan, Shandong, and Hebei), Zhongyuan Oilfield, Sinopec, central China, a 14 C cross-well tracer monitoring technology was dev…
New Sample Preparation Line for Radiocarbon Measurements at the Gxnu Laboratory
A new system for preparing 14 C samples was established for a compact accelerator mass spectrometer (GXNU-AMS) at Guangxi Normal University. This sample preparation system consists of three units: a vacuum maintenance unit, a CO 2 purification unit, and a CO 2 reduction unit, all of which were made of quartz glass. A series of radiocarbon ( 14 C) preparation experiments were conducted to verify the reliability of the system. The recovery rate of …
Radiocarbon and Tritium Measurements at the Gxnu-Ams Facility
A single-stage accelerator mass spectrometer (GXNU-AMS) developed for radiocarbon and tritium measurements was installed and commissioned at Guangxi Normal University in 2017. After several years of operational and methodological upgrades, its performance has been continuously improved and applied in multidisciplinary fields. Currently, the measurement sensitivity for radiocarbon and tritium is 14 C/ 12 C ∼ (3.14 ± 0.05) ×10 –15 and 3 H/ 1 H ∼ (1…
C-Ams Technology and Its Applications to an Oil Field Tracer Experiment
Many waterflooding oil fields, injecting water into an oil-bearing reservoir for pressure maintenance, are in their middle to late stages of development. To explore the geological conditions and improve oilfield recovery of the most important well group of the Hu 136 block, located on the border areas of three provinces (Henan, Shandong, and Hebei), Zhongyuan Oilfield, Sinopec, central China, a 14 C cross-well tracer monitoring technology was dev…
New Sample Preparation Line for Radiocarbon Measurements at the Gxnu Laboratory
A new system for preparing 14 C samples was established for a compact accelerator mass spectrometer (GXNU-AMS) at Guangxi Normal University. This sample preparation system consists of three units: a vacuum maintenance unit, a CO 2 purification unit, and a CO 2 reduction unit, all of which were made of quartz glass. A series of radiocarbon ( 14 C) preparation experiments were conducted to verify the reliability of the system. The recovery rate of …
The role of the Belt and Road Initiative
Using Chinese Customs data for the 2007–2018 period, we investigate how Chinese exporters respond to the Belt and Road Initiative (BRI). Based on a difference‐in‐differences identification strategy, we find that the BRI causes a substantial increase in China's total exports to BRI countries at the HS‐8 digit product level, and this export‐promoting effect is due to a significant increase in export quantity. We also find that exports increase more…
Can China’s transfer payment in national key ecological function zones promote green poverty reduction? Quasi-natural experiment evidence from China
Experimental Conditions for 14 C Graphite Preparation at the Gxnu Lab, China
As a required sample preparation method for 14 C graphite, the Zn-Fe reduction method has been widely used in various laboratories. However, there is still insufficient research to improve the efficiency of graphite synthesis, reduce modern carbon contamination, and test other condition methodologies at Guangxi Normal University (GXNU). In this work, the experimental parameters, such as the reduction temperature, reaction time, reagent dose, Fe p…
Experimental Study on the Charge-Exchange Cross-Sections of Low-Energy Carbon Ions in Helium at Gxnu
Compared with nitrogen and argon, helium is lighter and can better reduce the beam loss caused by angular scattering during beam transmission. The molecular dissociation cross-section in helium is high and stable at low energies, which makes helium the prevalent stripping gas in low-energy accelerator mass spectrometry (AMS). To study the stripping behavior of 14 C ions in helium at low energies, the charge state distributions of carbon ion beams…
Sample Preparation System for Carbonate and Dic in Water at the Gxnu-Ams Laboratory
A new vacuum line to extract CO 2 from carbonate and dissolved inorganic carbon (DIC) in water was established at Guangxi Normal University. The vacuum line consisted of two main components: a CO 2 bubble circulation region and a CO 2 purification collection region, both of which were made of quartz glass and metal pipelines. To validate its reliability, a series of carbonate samples were prepared using this system. The total recovery rate of CO …
Radiocarbon and Tritium Measurements at the Gxnu-Ams Facility
A single-stage accelerator mass spectrometer (GXNU-AMS) developed for radiocarbon and tritium measurements was installed and commissioned at Guangxi Normal University in 2017. After several years of operational and methodological upgrades, its performance has been continuously improved and applied in multidisciplinary fields. Currently, the measurement sensitivity for radiocarbon and tritium is 14 C/ 12 C ∼ (3.14 ± 0.05) ×10 –15 and 3 H/ 1 H ∼ (1…
Absorption and Distribution of Ultratrace Exogenous 14 C Urea in Rats
The absorption and distribution of radiocarbon-labeled urea at the ultratrace level were investigated with a 14 C-AMS biotracer method. The radiopharmaceutical concentrations in the plasma, heart, liver, spleen, lung, kidney, stomach, brain, bladder, muscle, testis, and fat of rats after oral administration of 14 C urea at ultratrace doses were determined by AMS, and the concentration-time curves in plasma and tissues and pharmacokinetic distribu…
Dual-pathway protection
Objective This study investigates the dual-pathway mechanism through which physical activity mitigates problematic smartphone use (PSU) among Chinese college students, examining the mediating role of social anxiety and the moderating effects of physical activity within a stress-PSU framework. Methods General stress theory was introduced to explore the intrinsic mechanisms by which perceived stress influences PSU. A total of 2,905 undergraduate st…
Proactive Health
Against the backdrop of population aging and changing family structures in China, research on older adults' agentic health practices remains relatively limited. This study employs participant observation and in-depth interviews, drawing on the culture-centered approach, to examine the differential health practices reflected in the health narratives of elderly residents in care institutions. The findings suggest that, in the face of health issues,…
Chemistry (6 works) · Radiocarbon dating (5 works) · Accelerator mass spectrometry (4 works) · Geology (4 works) · Materials Science (4 works) · Nuclear physics (4 works) · Physics (4 works) · Radiochemistry (4 works) · China (3 works) · Geography (3 works)