Xiaomei Xu
Datos Biográficos
| ID | 4131769 |
|---|---|
| NOMBRE | Xiaomei Xu |
| NOMBRES | Xiaomei |
| APELLIDO | Xu |
| FIRMA | XU X |
| AFILIACIONES | University of California, Irvine |
| ORCID | 0000-0001-5677-2497 |
| VERIFICADO | Sí |
| TOTAL DE OBRAS | 31 |
| TOTAL DE CITAS | 95 |
| TOTAL COMO AUTOR | 31 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 2004 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2025 |
| ÍNDICE H | 6 |
Measuring customer-perceived service quality in the ride-hailing industry
Service issues and limitations of generic measures (scales, instruments) necessitate well-developed customized measures to evaluate service quality. Against methodological limitations that grounded in researchers’ thoughts and second-hand knowledge (existing literatures and materials) to derive measure items and dimensions, limited considerations for measure validity (e.g., measurement invariance), this study proposes a generic approach for custo…
Linking social exchange theory to B2B relationship innovation management
Comparison of suicidal behavior among Chinese university students before and during the Covid-19 pandemic
This study explores the changes in suicidal behavior among Chinese university students before and during the COVID-19 pandemic. The prevalence of lifetime suicide plan, lifetime suicidal ideation, and 12-month suicidal ideation among Chinese university students was higher during the COVID-19 pandemic compared to before the pandemic. The prevalence of lifetime suicidal ideation did not increase among students with high family economic status, wher…
Isotopic seasonality of fluvial-derived greenhouse gases implies active layer deepening
Climate change in the northern circumpolar regions is rapidly thawing organic-rich permafrost soils, leading to the substantial release of dissolved CO 2 and CH 4 into river systems. This mobilization impacts local ecosystems and regional climate feedback loops, playing a crucial role in the Arctic carbon cycle. Here, we analyze the stable carbon ( δ 13 C) and radiocarbon (F 14 C) isotopic compositions of dissolved CO 2 and CH 4 in the Sagavanirk…
Evidence for multi-decadal fuel buildup in a large California wildfire from smoke radiocarbon measurements
In recent decades, there has been a significant increase in annual area burned in California’s Sierra Nevada mountains. This rise in fire activity has prompted the need to understand how historical forest management practices affect fuel composition and emissions. Here we examined the total carbon (TC) concentration and radiocarbon abundance (Δ 14 C) of particulate matter (PM) emitted by the KNP Complex Fire, which occurred during California’s 20…
Arctic-boreal lakes of interior Alaska dominated by contemporary carbon
Northern high-latitude lakes are critical sites for carbon processing and serve as potential conduits for the emission of permafrost-derived carbon and greenhouse gases. However, the fate and emission pathways of permafrost carbon in these systems remain uncertain. Here, we used the natural abundance of radiocarbon to identify and trace the predominant sources of methane, carbon dioxide, dissolved inorganic and organic carbon in nine lakes within…
Gracillin relieves pulmonary fibrosis by suppressing the STAT3 axis
Analysis of the Dose-Response Relationship Between the International Normalized Ratio and Hepatic Encephalopathy in Patients With Liver Cirrhosis Using Restricted Cubic Spline Functions
Background The International Normalized Ratio (INR) is significantly associated with Hepatic Encephalopathy (HE) in patients with liver cirrhosis. However, the dose-response relationship between continuous INR changes and HE risk has not been clearly defined. Thus, our goal was to explore the continuous relationship between HE and INR among patients hospitalized with liver cirrhosis and to evaluate the role of the INR as a risk factor for HE in t…
In-patient Expenditure Between 2012 and 2020 Concerning Patients With Liver Cirrhosis in Chongqing
Background: Liver cirrhosis is a major global health and economic challenge, placing a heavy economic burden on patients, families, and society. This study aimed to investigate medical expenditure trends in patients with liver cirrhosis and assess the drivers for such medical expenditure among patients with liver cirrhosis. Methods: Medical expenditure data concerning patients with liver cirrhosis was collected in six tertiary hospitals in Chongq…
A web-based novel prediction model for predicting depression in elderly patients with coronary heart disease
Background Depression is associated with an increased risk of death in patients with coronary heart disease (CHD). This study aimed to explore the factors influencing depression in elderly patients with CHD and to construct a prediction model for early identification of depression in this patient population. Materials and methods We used propensity-score matching to identify 1,065 CHD patients aged ≥65 years from four hospitals in Chongqing betwe…
Sesquiterpene lactones-rich fraction from Aucklandia lappa Decne. alleviates dextran sulfate sodium induced ulcerative colitis through co-regulating Mapk and Nrf2/Hmox-1 signaling pathway
Corporate environmental responsibility, CEO’s tenure and innovation legitimacy
This study uses data from Chinese listed companies from 2010 to 2017 to analyze the influence of mechanism of corporate environmental responsibility on innovation legitimacy. The results show the corporate environmental responsibility of Chinese listed companies has a positive impact on innovation legitimacy. Specifically, the CEO's tenure serves as a mediator between corporate environmental responsibility and innovation legitimacy. Moreover, the…
Implications of radiocarbon ages of organic and inorganic carbon in coastal lakes in Florida for establishing a reliable chronology for sediment-based paleoclimate reconstruction
Coastal lake sediments are valuable paleoclimate archives provided that they can be accurately dated. Here, we report radiocarbon ages of bulk sediment organic matter (OM), plants, shells, particulate OM, and dissolved OM from coastal lakes in Florida. Bulk sediment OM yielded ages that are consistently older than contemporaneous plants and shells, indicating significant radiocarbon deficiencies in sedimentary OM in these lakes. The data show tha…
Gender Characteristics in Methods of Chinese Rural Young Suicides
Testing sealed-tube Graphitization at the Nerc Radiocarbon facility, east Kilbride
Graphitization of 0.5–1.5 mg C, and of smaller samples to a lesser extent, is routinely done at our Facility by reduction over zinc. The method yields low background, good accuracy but offers a limited throughput, requires dedicated equipment and considerable operator time. Sealed-tube graphitization is faster, easier and cost-efficient producing as many graphites as CO 2 can be purified in one day with low background, good accuracy and precision…
Radiocarbon in the Maritime Air and Sea Surface Water of the South China Sea
Radiocarbon ( 14 C) generated by the thermonuclear tests in the late 1950s to early 1960s has been used as a tracer to study atmospheric and oceanic circulations, carbon exchange between different reservoirs, and fossil fuel emissions. Here we report the first measurements of 14 C in atmospheric CO 2 of maritime air collected over the South China Sea (SCS) during July 2014. We also present 14 C of the dissolved inorganic carbon (DIC) in the sea s…
Respiration of aged soil carbon during fall in permafrost peatlands enhanced by active layer deepening following wildfire but limited following thermokarst
Permafrost peatlands store globally significant amounts of soil organic carbon (SOC) that may be vulnerable to climate change. Permafrost thaw exposes deeper, older SOC to microbial activity, but SOC vulnerability to mineralization and release as carbon dioxide is likely influenced by the soil environmental conditions that follow thaw. Permafrost thaw in peat plateaus, the dominant type of permafrost peatlands in North America, occurs both throug…
Chronology and glass chemistry of tephra and cryptotephra horizons from lake sediments in northern Alaska, USA
Holocene tephrostratigraphy in Alaska provides independent chronology and stratigraphic correlation in a region where reworked old (Holocene) organic carbon can significantly distort radiocarbon chronologies. Here, we present new glass chemistry and chronology for Holocene tephras preserved in three Alaskan lakes: one in the eastern interior and two in the southern Brooks Range. Tephra beds in the eastern interior lake-sediment core are correlate…
High-resolution δ18O and δ13C records of an AMS 14C and 230Th/U dated stalagmite from Xinya Cave in Chongqing
Tracing Artificially Recharged Groundwater using Water and Carbon Isotopes
We conducted an isotopic analysis of groundwater in Orange County, California, USA, around the Talbert Seawater Injection Barrier to determine if recycled water, used to artificially recharge local aquifers, carries a unique isotopic signature that can be used as a tracer. From September 2014 to April 2015, we collected groundwater from six privately owned wells within the coastal groundwater basin, along with various surface waters. All water sa…
Bag of Tricks
Over the last few decades, radiocarbon laboratories have used different procedures for measuring a broad range of carbonaceous materials. To produce reliable results, the processes employed for sample processing, graphite target production, and spectrometer measurement must be rigorous, well tested, and reproducible. Most of the procedures have been developed, improved, and published as part of the laboratories’ quality control and research progr…
Simple, Rapid, and Cost Effective
We have developed a simple, rapid method to screen carbonates for survey applications, which provides radiocarbon dates with decreased precision at lower cost. The method is based on previous work by Longworth et al. (2011) and involves mixing pulverized CaCO 3 with Fe powder, followed by pressing into aluminum target holders for direct 14 C accelerator mass spectrometry (AMS) measurements. An optimum beam current averaging ∼10% of those produced…
Ultra Small-Mass Graphitization by Sealed Tube Zinc Reduction Method for AMS 14 C Measurements
A modified sealed tube Zn reduction method based on Khosh et al. (2010) has been developed to graphitize ultra small-mass samples ranging from 4–15 μg carbon (C) for accelerator mass spectrometry (AMS) radiocarbon measurements. In this method, the reagent TiH 2 is removed from the previous method while the amounts of Zn and Fe powder remain the same. The volume of the sealed reactor is further reduced by ∼40% to ∼0.75 cm 3 and the graphitization …
Initial Results of an Intercomparison of AMS-Based Atmospheric 14 CO 2 Measurements
This article presents results from the first 3 rounds of an international intercomparison of measurements of Δ 14 CO 2 in liter-scale samples of whole air by groups using accelerator mass spectrometry (AMS). The ultimate goal of the intercomparison is to allow the merging of Δ 14 CO 2 data from different groups, with the confidence that differences in the data are geophysical gradients and not artifacts of calibration. Eight groups have participa…
Ultra Small-Mass Graphitization by Sealed Tube Zinc Reduction Method for AMS 14C Measurements
A modified sealed tube Zn reduction method based on Khosh et al. (2010) has been developed to graphitize ultra small-mass samples ranging from 4–15 μg carbon (C) for accelerator mass spectrometry (AMS) radiocarbon measurements. In this method, the reagent TiH2 is removed from the previous method while the amounts of Zn and Fe powder remain the same. The volume of the sealed reactor is further reduced by ∼40% to ∼0.75 cm3 and the graphitization te…
The Keck Carbon Cycle AMS Laboratory, University of California, Irvine
A new radiocarbon accelerator mass spectrometry (AMS) laboratory for carbon cycle studies has been established at the University of California, Irvine. The 0.5MV AMS system was installed in mid-2002 and has operated routinely since October of that year. This paper briefly describes the spectrometer and summarizes lessons learned during the first year of operation. In the process of setting up the system, we identified and largely suppressed a pre…
Blank Assessment for Ultra-Small Radiocarbon Samples
The Keck Carbon Cycle AMS facility at the University of California, Irvine (KCCAMS/UCI) has developed protocols for analyzing radiocarbon in samples as small as ∼0.001 mg of carbon (C). Mass-balance background corrections for modern and 14 C-dead carbon contamination (MC and DC, respectively) can be assessed by measuring 14 C-free and modern standards, respectively, using the same sample processing techniques that are applied to unknown samples. …
Is the Consensus Value of ANU Sucrose (IAEA C-6) Too High
Primary and secondary standards are essential in radiocarbon analyses for the purpose of reporting and comparing data among laboratories, as well as for internal laboratory data quality control. ANU sucrose is one of the IAEA-certified 14 C standards (C-6) with a consensus value of 1.5061 ± 0.0011 fraction modern (Fm). All of our measurements of ANU sucrose ( n = 351) as a secondary standard over the last 7 yr result in an average value of 1.5016…
Simple, Rapid, and Cost Effective
We have developed a simple, rapid method to screen carbonates for survey applications, which provides radiocarbon dates with decreased precision at lower cost. The method is based on previous work by Longworth et al. (2011) and involves mixing pulverized CaCO 3 with Fe powder, followed by pressing into aluminum target holders for direct 14 C accelerator mass spectrometry (AMS) measurements. An optimum beam current averaging ∼10% of those produced…
Ultra Small-Mass Graphitization by Sealed Tube Zinc Reduction Method for AMS 14 C Measurements
A modified sealed tube Zn reduction method based on Khosh et al. (2010) has been developed to graphitize ultra small-mass samples ranging from 4–15 μg carbon (C) for accelerator mass spectrometry (AMS) radiocarbon measurements. In this method, the reagent TiH 2 is removed from the previous method while the amounts of Zn and Fe powder remain the same. The volume of the sealed reactor is further reduced by ∼40% to ∼0.75 cm 3 and the graphitization …
Compound-Specific Radiocarbon Analyses of Phospholipid Fatty Acids and N -Alkanes in Ocean Sediments
We report compound-specific radiocarbon analyses of organic matter in ocean sediments from the northeast Pacific Ocean. Chemical extractions and a preparative capillary gas chromatograph (PCGC) were used to isolate phospholipid fatty acids (PLFA) and n -alkanes from 3 cores collected off the coast of California, USA. Mass of samples for accelerator mass spectrometry (AMS) 14 C analysis ranged from 13–100 μg C. PLFA extracted from anaerobic sedime…
Bag of Tricks
Over the last few decades, radiocarbon laboratories have used different procedures for measuring a broad range of carbonaceous materials. To produce reliable results, the processes employed for sample processing, graphite target production, and spectrometer measurement must be rigorous, well tested, and reproducible. Most of the procedures have been developed, improved, and published as part of the laboratories’ quality control and research progr…
Initial Results of an Intercomparison of AMS-Based Atmospheric 14 CO 2 Measurements
This article presents results from the first 3 rounds of an international intercomparison of measurements of Δ 14 CO 2 in liter-scale samples of whole air by groups using accelerator mass spectrometry (AMS). The ultimate goal of the intercomparison is to allow the merging of Δ 14 CO 2 data from different groups, with the confidence that differences in the data are geophysical gradients and not artifacts of calibration. Eight groups have participa…
Corporate environmental responsibility, CEO’s tenure and innovation legitimacy
This study uses data from Chinese listed companies from 2010 to 2017 to analyze the influence of mechanism of corporate environmental responsibility on innovation legitimacy. The results show the corporate environmental responsibility of Chinese listed companies has a positive impact on innovation legitimacy. Specifically, the CEO's tenure serves as a mediator between corporate environmental responsibility and innovation legitimacy. Moreover, the…
Radiocarbon in the Maritime Air and Sea Surface Water of the South China Sea
Radiocarbon ( 14 C) generated by the thermonuclear tests in the late 1950s to early 1960s has been used as a tracer to study atmospheric and oceanic circulations, carbon exchange between different reservoirs, and fossil fuel emissions. Here we report the first measurements of 14 C in atmospheric CO 2 of maritime air collected over the South China Sea (SCS) during July 2014. We also present 14 C of the dissolved inorganic carbon (DIC) in the sea s…
C Calibration Curves for Modern Plant Material from Tropical Regions of South America
Two Δ 14 C calibration curves have been produced that allow determination of the statistical average age of coca leaf and cocaine base specimens produced for the time period 1979–2009. These calibration curves are based on field collections of specimens in Bolivia, Colombia, Ecuador, and Peru. The coca leaf F 14 C and Δ 14 C calibration curves can be used to predict the ages of botanical tissues collected in tropical South America and possibly ex…
The Keck Carbon Cycle AMS Laboratory, University of California, Irvine
A new radiocarbon accelerator mass spectrometry (AMS) laboratory for carbon cycle studies has been established at the University of California, Irvine. The 0.5MV AMS system was installed in mid-2002 and has operated routinely since October of that year. This paper briefly describes the spectrometer and summarizes lessons learned during the first year of operation. In the process of setting up the system, we identified and largely suppressed a pre…
Modifying a sealed tube zinc reduction method for preparation of AMS graphite targets
Blank Assessment for Ultra-Small Radiocarbon Samples
The Keck Carbon Cycle AMS facility at the University of California, Irvine (KCCAMS/UCI) has developed protocols for analyzing radiocarbon in samples as small as ∼0.001 mg of carbon (C). Mass-balance background corrections for modern and 14 C-dead carbon contamination (MC and DC, respectively) can be assessed by measuring 14 C-free and modern standards, respectively, using the same sample processing techniques that are applied to unknown samples. …
Compound-Specific Radiocarbon Analyses of Phospholipid Fatty Acids and N -Alkanes in Ocean Sediments
We report compound-specific radiocarbon analyses of organic matter in ocean sediments from the northeast Pacific Ocean. Chemical extractions and a preparative capillary gas chromatograph (PCGC) were used to isolate phospholipid fatty acids (PLFA) and n -alkanes from 3 cores collected off the coast of California, USA. Mass of samples for accelerator mass spectrometry (AMS) 14 C analysis ranged from 13–100 μg C. PLFA extracted from anaerobic sedime…
Is the Consensus Value of ANU Sucrose (IAEA C-6) Too High
Primary and secondary standards are essential in radiocarbon analyses for the purpose of reporting and comparing data among laboratories, as well as for internal laboratory data quality control. ANU sucrose is one of the IAEA-certified 14 C standards (C-6) with a consensus value of 1.5061 ± 0.0011 fraction modern (Fm). All of our measurements of ANU sucrose ( n = 351) as a secondary standard over the last 7 yr result in an average value of 1.5016…
C Calibration Curves for Modern Plant Material from Tropical Regions of South America
Two Δ 14 C calibration curves have been produced that allow determination of the statistical average age of coca leaf and cocaine base specimens produced for the time period 1979–2009. These calibration curves are based on field collections of specimens in Bolivia, Colombia, Ecuador, and Peru. The coca leaf F 14 C and Δ 14 C calibration curves can be used to predict the ages of botanical tissues collected in tropical South America and possibly ex…
Simple, Rapid, and Cost Effective
We have developed a simple, rapid method to screen carbonates for survey applications, which provides radiocarbon dates with decreased precision at lower cost. The method is based on previous work by Longworth et al. (2011) and involves mixing pulverized CaCO 3 with Fe powder, followed by pressing into aluminum target holders for direct 14 C accelerator mass spectrometry (AMS) measurements. An optimum beam current averaging ∼10% of those produced…
Ultra Small-Mass Graphitization by Sealed Tube Zinc Reduction Method for AMS 14 C Measurements
A modified sealed tube Zn reduction method based on Khosh et al. (2010) has been developed to graphitize ultra small-mass samples ranging from 4–15 μg carbon (C) for accelerator mass spectrometry (AMS) radiocarbon measurements. In this method, the reagent TiH 2 is removed from the previous method while the amounts of Zn and Fe powder remain the same. The volume of the sealed reactor is further reduced by ∼40% to ∼0.75 cm 3 and the graphitization …
Initial Results of an Intercomparison of AMS-Based Atmospheric 14 CO 2 Measurements
This article presents results from the first 3 rounds of an international intercomparison of measurements of Δ 14 CO 2 in liter-scale samples of whole air by groups using accelerator mass spectrometry (AMS). The ultimate goal of the intercomparison is to allow the merging of Δ 14 CO 2 data from different groups, with the confidence that differences in the data are geophysical gradients and not artifacts of calibration. Eight groups have participa…
Ultra Small-Mass Graphitization by Sealed Tube Zinc Reduction Method for AMS 14C Measurements
A modified sealed tube Zn reduction method based on Khosh et al. (2010) has been developed to graphitize ultra small-mass samples ranging from 4–15 μg carbon (C) for accelerator mass spectrometry (AMS) radiocarbon measurements. In this method, the reagent TiH2 is removed from the previous method while the amounts of Zn and Fe powder remain the same. The volume of the sealed reactor is further reduced by ∼40% to ∼0.75 cm3 and the graphitization te…
Chronology and glass chemistry of tephra and cryptotephra horizons from lake sediments in northern Alaska, USA
Holocene tephrostratigraphy in Alaska provides independent chronology and stratigraphic correlation in a region where reworked old (Holocene) organic carbon can significantly distort radiocarbon chronologies. Here, we present new glass chemistry and chronology for Holocene tephras preserved in three Alaskan lakes: one in the eastern interior and two in the southern Brooks Range. Tephra beds in the eastern interior lake-sediment core are correlate…
High-resolution δ18O and δ13C records of an AMS 14C and 230Th/U dated stalagmite from Xinya Cave in Chongqing
Tracing Artificially Recharged Groundwater using Water and Carbon Isotopes
We conducted an isotopic analysis of groundwater in Orange County, California, USA, around the Talbert Seawater Injection Barrier to determine if recycled water, used to artificially recharge local aquifers, carries a unique isotopic signature that can be used as a tracer. From September 2014 to April 2015, we collected groundwater from six privately owned wells within the coastal groundwater basin, along with various surface waters. All water sa…
Bag of Tricks
Over the last few decades, radiocarbon laboratories have used different procedures for measuring a broad range of carbonaceous materials. To produce reliable results, the processes employed for sample processing, graphite target production, and spectrometer measurement must be rigorous, well tested, and reproducible. Most of the procedures have been developed, improved, and published as part of the laboratories’ quality control and research progr…
Respiration of aged soil carbon during fall in permafrost peatlands enhanced by active layer deepening following wildfire but limited following thermokarst
Permafrost peatlands store globally significant amounts of soil organic carbon (SOC) that may be vulnerable to climate change. Permafrost thaw exposes deeper, older SOC to microbial activity, but SOC vulnerability to mineralization and release as carbon dioxide is likely influenced by the soil environmental conditions that follow thaw. Permafrost thaw in peat plateaus, the dominant type of permafrost peatlands in North America, occurs both throug…
Implications of radiocarbon ages of organic and inorganic carbon in coastal lakes in Florida for establishing a reliable chronology for sediment-based paleoclimate reconstruction
Coastal lake sediments are valuable paleoclimate archives provided that they can be accurately dated. Here, we report radiocarbon ages of bulk sediment organic matter (OM), plants, shells, particulate OM, and dissolved OM from coastal lakes in Florida. Bulk sediment OM yielded ages that are consistently older than contemporaneous plants and shells, indicating significant radiocarbon deficiencies in sedimentary OM in these lakes. The data show tha…
Gender Characteristics in Methods of Chinese Rural Young Suicides
Testing sealed-tube Graphitization at the Nerc Radiocarbon facility, east Kilbride
Graphitization of 0.5–1.5 mg C, and of smaller samples to a lesser extent, is routinely done at our Facility by reduction over zinc. The method yields low background, good accuracy but offers a limited throughput, requires dedicated equipment and considerable operator time. Sealed-tube graphitization is faster, easier and cost-efficient producing as many graphites as CO 2 can be purified in one day with low background, good accuracy and precision…
Radiocarbon in the Maritime Air and Sea Surface Water of the South China Sea
Radiocarbon ( 14 C) generated by the thermonuclear tests in the late 1950s to early 1960s has been used as a tracer to study atmospheric and oceanic circulations, carbon exchange between different reservoirs, and fossil fuel emissions. Here we report the first measurements of 14 C in atmospheric CO 2 of maritime air collected over the South China Sea (SCS) during July 2014. We also present 14 C of the dissolved inorganic carbon (DIC) in the sea s…
Analysis of the Dose-Response Relationship Between the International Normalized Ratio and Hepatic Encephalopathy in Patients With Liver Cirrhosis Using Restricted Cubic Spline Functions
Background The International Normalized Ratio (INR) is significantly associated with Hepatic Encephalopathy (HE) in patients with liver cirrhosis. However, the dose-response relationship between continuous INR changes and HE risk has not been clearly defined. Thus, our goal was to explore the continuous relationship between HE and INR among patients hospitalized with liver cirrhosis and to evaluate the role of the INR as a risk factor for HE in t…
In-patient Expenditure Between 2012 and 2020 Concerning Patients With Liver Cirrhosis in Chongqing
Background: Liver cirrhosis is a major global health and economic challenge, placing a heavy economic burden on patients, families, and society. This study aimed to investigate medical expenditure trends in patients with liver cirrhosis and assess the drivers for such medical expenditure among patients with liver cirrhosis. Methods: Medical expenditure data concerning patients with liver cirrhosis was collected in six tertiary hospitals in Chongq…
A web-based novel prediction model for predicting depression in elderly patients with coronary heart disease
Background Depression is associated with an increased risk of death in patients with coronary heart disease (CHD). This study aimed to explore the factors influencing depression in elderly patients with CHD and to construct a prediction model for early identification of depression in this patient population. Materials and methods We used propensity-score matching to identify 1,065 CHD patients aged ≥65 years from four hospitals in Chongqing betwe…
Sesquiterpene lactones-rich fraction from Aucklandia lappa Decne. alleviates dextran sulfate sodium induced ulcerative colitis through co-regulating Mapk and Nrf2/Hmox-1 signaling pathway
Corporate environmental responsibility, CEO’s tenure and innovation legitimacy
This study uses data from Chinese listed companies from 2010 to 2017 to analyze the influence of mechanism of corporate environmental responsibility on innovation legitimacy. The results show the corporate environmental responsibility of Chinese listed companies has a positive impact on innovation legitimacy. Specifically, the CEO's tenure serves as a mediator between corporate environmental responsibility and innovation legitimacy. Moreover, the…
Evidence for multi-decadal fuel buildup in a large California wildfire from smoke radiocarbon measurements
In recent decades, there has been a significant increase in annual area burned in California’s Sierra Nevada mountains. This rise in fire activity has prompted the need to understand how historical forest management practices affect fuel composition and emissions. Here we examined the total carbon (TC) concentration and radiocarbon abundance (Δ 14 C) of particulate matter (PM) emitted by the KNP Complex Fire, which occurred during California’s 20…
Chemistry (18 obras) · Geology (12 obras) · Radiocarbon dating (11 obras) · Environmental Science (10 obras) · Isotope Analysis in Ecology (10 obras) · Chromatography (9 obras) · Geography (9 obras) · Accelerator mass spectrometry (8 obras) · Medicine (8 obras) · Archaeology and ancient environmental studies (7 obras)