Based on broad literature search, the species, compositions, pharmacology, clinical applications, typical dietary and health taboo of tangerine pith were reviewed, to provide scientific materials for universal health ...Based on broad literature search, the species, compositions, pharmacology, clinical applications, typical dietary and health taboo of tangerine pith were reviewed, to provide scientific materials for universal health care.展开更多
Two-micron （thulium） laser resection of the prostate-tangerine technique （TmLRP-TT） is a transurethral procedure that uses a thulium laser fiber to dissect whole prostatic lobes off the surgical capsule, similar t...Two-micron （thulium） laser resection of the prostate-tangerine technique （TmLRP-TT） is a transurethral procedure that uses a thulium laser fiber to dissect whole prostatic lobes off the surgical capsule, similar to peeling a tangerine. We recently reported the primary results. Here we introduce this procedure in detail. A 70-W, 2-um （thulium） laser was used in continuous-wave mode. We joined the incision by making a transverse cut from the level of the verumontanum to the bladder neck, making the resection sufficiently deep to reach the surgical capsule, and resected the prostate into small pieces, just like peeling a tangerine. As we resected the prostate, the pieces were vaporized, sufficiently small to be evacuated through the reseetoscope sheath, and the use of the mechanical tissue morcellator was not required. The excellent hemostasis of the thulium laser ensured the safety of TmLRP-TT. No patient required blood transfusion. Saline irrigation was used intraoperatively, and no case of transurethral resection syndrome was observed. The bladder outlet obstruction had clearly resolved after catheter removal in all cases. We designed the tangerine technique and proved it to be the most suitable procedure for the use of thulium laser in the treatment of benign prostatic hyperplasia （BPH）. This procedure, which takes less operative time than standard techniques, is safe and combines efficient cutting and rapid organic vaporization, thereby showing the great superiority of the thulium fiber laser in the treatment of BPH. It has been proven to be as safe and efficient as transurethral resection of the prostate （TURP） during the 1-year follow-up.展开更多
The 2-1μm thulium laser resection of the prostate-tangerine technique （TmLRP-TT） has been introduced as a minimally invasive treatment for benign prostatic hyperplasia （BPH）. This study was undertaken to assess t...The 2-1μm thulium laser resection of the prostate-tangerine technique （TmLRP-TT） has been introduced as a minimally invasive treatment for benign prostatic hyperplasia （BPH）. This study was undertaken to assess the clinical efficacy and safety of TmLRP-TT for the treatment of BPH patients with previously negative transrectal prostate biopsy. A prospective analysis of 51 patients with previously negative transrectal prostate biopsy who underwent surgical treatment using TmLRP-TT was performed from December 2011 to December 2013. Preoperative status, surgical details, and perioperative complications were recorded. The follow-up outcome was evaluated with subjective and objective tests at I and 6 months. TmLRP-TT was successfully completed in all patients. Mean prostate volume, operative duration, and catheterization time were 93.3 ± 37.9 ml, 69.5 ± 39.5 min, and 6.5 ± 1.3 days, respectively. The mean International Prostate Symptom Score, quality of life score, maximum urinary flow rate, and post-void residual urine volume changed notably at 6-month follow-up （22.5 ± 6.9 vs 6.1 ± 3.2, 4.8 ± 1.3 vs 1.1 ± 0.9, 7.3 ± 4.5 vs 18.9 ± 7.1 ml s^-1, and 148.7 ± 168.7 vs 28.4 ± 17.9 ml）. Two （3.9%） patients required blood transfusion perioperatively, while 3 （5.9%） patients experienced transient hematuria postoperatively, and 2 （3.9%） patients received 3 days recatheterization due to clot retention. TmLRP-TT is a safe and effective minimally invasive technique for patients with previously negative transrectal prostate biopsy during the 6-month follow-up. This promising technology may be a feasible surgical method for previously negative transrectal prostate biopsy in the future.展开更多
Ethion residue removal efficiency using individual and combined effects of ultrasonication (US), ozonation (O3), ultrasonication and ozonation (US/O3) was investigated. A 1 mg·L-1 standard ethion was subjected to...Ethion residue removal efficiency using individual and combined effects of ultrasonication (US), ozonation (O3), ultrasonication and ozonation (US/O3) was investigated. A 1 mg·L-1 standard ethion was subjected to an ultrasonic irradiation (3W input power) device with different frequencies of 108, 400, 700, 1000 kHz, and to an ozone with a concentration of 200 mg· mL-1 with various exposure times (0, 15, 30, 45 and 60 minutes). Reduction of residual ethion was determined by gas chromatography with flame photometric detection (GC-FPD). It was found that 1000 kHz ultrasonic irradiation for 60 minutes was the most effective treatment for reducing ethion concentration. Additionally, ozone could reduce the concentration of standard ethion after 60 minutes of exposure. Ultrasonic irradiation in combination with ozone had a synergistic effect in reducing standard ethion concentration, with the highest rate occurring within the first 15 minutes. Ethion concentration was reduced to 75.43% after ultrasonic irradiation at 1000 kHz and ozone exposure for 60 minutes. The effectiveness of the combined scheme for reducing of ethion residues on tangerine was also determined by GC-FPD. The ethion residue on fresh tangerines after ultrasonic irradiation and ozone washing was reduced by 73.03% after 60 minutes. The present study demonstrates that ultrasonic irradiation and ozone exposure could be used to reduce ethion residues in treated tangerine in order to meet the Standards for Pesticide Residue Limits.展开更多
Green chemistry methods for production of nanoparticles have many advantages, such as ease of use, which makes the methods desirable and economically viable. The aim of the present work was to green synthesise silver ...Green chemistry methods for production of nanoparticles have many advantages, such as ease of use, which makes the methods desirable and economically viable. The aim of the present work was to green synthesise silver nanoparticles (SNPs) using aqueous tangerine peel extract in different ratios (2:1, 1:1, 1:2). The formed SNPs were characterised using ultraviolet-visible (UV-Vis) spectrophotometry, and transmission electron microscopy (TEM). The UV-Vis spectra showed that the highest absorbance was observed when the ratio of peel tangerine extract to silver nitrate solution was 1:2. The transmission electron micrographs showed the formation of poly dispersed nanoparticles. It was found that the average diameter of the nanoparticles was 30.29 ± 5.1 nm, 16.68 ± 5.7 nm, and 25.85 ± 8.4 nm, using a tangerine peel solution and silver nitrate solution ratio of 2:1, 1:1, and 1:2, respectively. The formed SNPs were evaluated as catalysts for methyl orange dye degradation, and the results confirmed that SNPs can speed up the degradation of the dye.展开更多
This paper presents a new method to study the interaction between tangerine peel and beer by absorption spectrum.The author explores the change laws and the differences of the absorbance on some wave band from the abs...This paper presents a new method to study the interaction between tangerine peel and beer by absorption spectrum.The author explores the change laws and the differences of the absorbance on some wave band from the absorption spectrums of tangerine peel and the mixture of tangerine peel and beer. The results show that there is an obvious difference around 323 nm though the absorbance values of the two samples are almost similar in the most bands. The absorbance value of the mixture is obviously greater than that of tangerine peel at 276 nm in the spectrums, and there is a shift of the peak position in the absorption spectrum of the mixture, which shows the differences of the absorbance values and the peak positions of the two samples. Through comparing the characteristics of the two samples' absorption spectrums, a new method for researching new pharmacological action of tangerine peel is presented in this paper. The result indicates that the technology of spectrum analysis will play an important role in the research and development of Chinese herbal pharmacology and new pharmacology.展开更多
The tangerine pathotype of Alternaria alternata is the aetiological agent of Alternaria brown spot on tangerines. In the state of Paraíba, Brazil, its occurrence on “Dancy” tangerine trees is associated with ge...The tangerine pathotype of Alternaria alternata is the aetiological agent of Alternaria brown spot on tangerines. In the state of Paraíba, Brazil, its occurrence on “Dancy” tangerine trees is associated with genetic aspects as well as the influence of environmental conditions on reproduction and dissemination within and between populations. The aim of the present study was to evaluate the diversity of isolates of this pathogen using morphophysiological and molecular markers. For the analysis of mycelial growth and sporulation, 30 isolates from different locations were examined at 24-hour intervals until the seventh day, when the spores were quantified. The 30 isolates were characterised based on molecular markers (ISSR) and genetic similarity (Jaccard index). A factor arrangement was used: 30 isolates, four media (ODA, PDA, LEA and V8), three light regimes (continuous dark, alternating light and continuous light) and three temperatures (15°C, 25°C and 35°C), with 12 repetitions. Groups 1, 2 and 3 presented low genetic variability. Group 4 showed high genetic variability of the isolates obtained from the Massaranduba (state of Paraíba-Brazil) producing region and higher mycelial growth and sporulation of A. alternata. The continuous light regime and the temperature 25°C in PDA and V8 media were the ideal conditions for the mycelial growth and sporulation, respectively, of the isolates of A. alternata.展开更多
A new cranium and two mandibles of Ailuropoda melanoleuca from Xiangxi,Hunan Province are described here.The materials were discovered in a karst cave on the Bamian Mountain at an altitude of 1200 m,with AMC carbon-fo...A new cranium and two mandibles of Ailuropoda melanoleuca from Xiangxi,Hunan Province are described here.The materials were discovered in a karst cave on the Bamian Mountain at an altitude of 1200 m,with AMC carbon-fourteen isotope dating indicating an age of 2800±30 BP.Historically,the giant panda was widely distributed in southern China and parts of Southeast Asia during the Pleistocene epoch,but it is now confined and isolated to six mountain ranges in southwest China’s Sichuan,Shaanxi,and Gansu provinces.The subfossil materials reported here represent the first discovery of the living species of giant panda in Xiangxi,Hunan.This extends their geographical distribution in southern China during the Holocene epoch eastward to the eastern edge of the Yunnan-Guizhou Plateau and their recent altitude range down to 1200 m.展开更多
To assess the effect of mining activity on heavy metal pollution and associated health risks in tin mining regions,water and soil sampling was conducted near a tin mining site in Hunan Province.The content and distrib...To assess the effect of mining activity on heavy metal pollution and associated health risks in tin mining regions,water and soil sampling was conducted near a tin mining site in Hunan Province.The content and distribution of heavy metals were determined.Pollution,ecological risks,and potential health hazards were evaluated using the ground accumulation index,potential ecological risk index,and health risk assessment models,respectively.The results indicated elevated levels of heavy metals in water and soil samples compared to acceptable background values.Ground accumulation index assessment revealed extreme pollution of soil with As and Cd and moderate pollution with Cu,Pb,and Zn.Cr and Hg were categorized as non-pollutants.Water samples exhibited extreme pollution levels of Hg,Cr,Cd,and As;moderate pollution levels of Pb;and moderate to high pollution levels of Cu and Zn.The tin mining area demonstrated a significantly high level of potential ecological risk,where As and Cd were the primary risk elements in soil,whereas Cr,Cd,and As contributed predominantly to water ecological risk.The human health risk assessment highlighted As,Cd,Cr,Hg,Pb,and Cu in water and As and Pb in soil as the principal non-carcinogenic factors.The primary carcinogenic factors were As,Cr,and Cd in water and As in soil,with As posing the greatest risk for non-carcinogenic and carcinogenic effects.Furthermore,oral intake was the primary exposure route,with children being particularly vulnerable to the adverse effects of heavy metal pollution.展开更多
The cultural relics on display at this museum have become a window for visitors to get a glimpse of Chinese civilization thousands of years ago.THE Hunan Museum in Changsha is the largest history museum in Hunan Provi...The cultural relics on display at this museum have become a window for visitors to get a glimpse of Chinese civilization thousands of years ago.THE Hunan Museum in Changsha is the largest history museum in Hunan Province.It houses over 570,000 items in its collection,featuring relics from the Mawangdui Han Dynasty Tombs,bronzeware from the Shang(1600 B.C.-1046 B.C.)and Zhou(1046 B.C.-256 B.C.)dynasties,Chu State historical artifacts,and other objects.展开更多
[Objectives]This study was conducted to better understand the occurrence status of thrips in Central Hunan,clarify thrips species,and provide a basis for scientific control.[Methods]The occurrence of thrips in the Cen...[Objectives]This study was conducted to better understand the occurrence status of thrips in Central Hunan,clarify thrips species,and provide a basis for scientific control.[Methods]The occurrence of thrips in the Central Hunan Region were investigated and analyzed.Through field collection,molecular biological identification and sequencing,thrips populations in the region were identified.[Results]Six species of thrips infesting vegetable crops were identified in the Central Hunan Region,with Megalurothrips usitatus,Thrips palmi,and Frankliniella intonsa being the dominant species.These pests were particularly severe on leguminous and cucurbit crops.[Conclusions]Combined with integrated control strategies,this study provides theoretical and technical support for the scientific management of thrips in the Central Hunan Region,ensuring the sustainable development of the local vegetable industry.展开更多
In the context of the era of carbon peaking and carbon neutrality,clarifying the emission patterns of non-CO_(2)Greenhouse Gas(GHG)from agricultural sources is of practical significance to China’s implementation of g...In the context of the era of carbon peaking and carbon neutrality,clarifying the emission patterns of non-CO_(2)Greenhouse Gas(GHG)from agricultural sources is of practical significance to China’s implementation of greenhouse gas emission reduction policies.The Intergovernmental Panel on Climate Change(IPCC)coefficient method was used to calculate non-CO_(2)GHG emissions from agricultural sources in 122 counties in Hunan Province,China,from 2010 to 2020,and the spatiotemporal evolution characteristics of emission intensity were analyzed.The Stochastic Impacts by Regression on Population,Affluence,and Technology(STRIPAT)model forecasted the prospective evolution of non-CO_(2)GHG emissions from agricultural sources at the county level under various scenarios from 2030 to 2050.The results demonstrated a general decline in non-CO_(2)GHG emissions from agricultural sources within the study area,with 75.41%of counties exhibiting a reduction in emissions.Geographically,emissions were higher in the Dongting Lake area and central Hengyang.The emission intensity per unit of agricultural added value and the intensity per unit of agricultural land area showed an overall downward trend.Spatially,the emission intensity per unit of farmland area in a few counties(cities,districts)in southern Hunan was still relatively high.By forecasting the non-CO_(2)GHG emissions from agricultural sources,the majority of counties(cities and districts)demonstrated a gradual decline in emissions,suggesting that agricultural production had the potential to reduce emissions in the future,while also facing certain pressure to reduce emissions.It is recommended that Hunan Province formulate agricultural carbon emission reduction policies that take regional development differences into account.This would provide a reference for future agricultural carbon emission reduction research in the whole country.展开更多
基金Supported by the Key Laboratory of Resource Biology and Biotechnology in Western China of Ministry of Education(KH09030)the Special Fund for the Science and Technology of Science and Technology Department of Tibet Autonomous Region(20091012)the Scientific Research Program Funded by Shaanxi Provincial Education Department(2010JK862)~~
文摘Based on broad literature search, the species, compositions, pharmacology, clinical applications, typical dietary and health taboo of tangerine pith were reviewed, to provide scientific materials for universal health care.
文摘Two-micron （thulium） laser resection of the prostate-tangerine technique （TmLRP-TT） is a transurethral procedure that uses a thulium laser fiber to dissect whole prostatic lobes off the surgical capsule, similar to peeling a tangerine. We recently reported the primary results. Here we introduce this procedure in detail. A 70-W, 2-um （thulium） laser was used in continuous-wave mode. We joined the incision by making a transverse cut from the level of the verumontanum to the bladder neck, making the resection sufficiently deep to reach the surgical capsule, and resected the prostate into small pieces, just like peeling a tangerine. As we resected the prostate, the pieces were vaporized, sufficiently small to be evacuated through the reseetoscope sheath, and the use of the mechanical tissue morcellator was not required. The excellent hemostasis of the thulium laser ensured the safety of TmLRP-TT. No patient required blood transfusion. Saline irrigation was used intraoperatively, and no case of transurethral resection syndrome was observed. The bladder outlet obstruction had clearly resolved after catheter removal in all cases. We designed the tangerine technique and proved it to be the most suitable procedure for the use of thulium laser in the treatment of benign prostatic hyperplasia （BPH）. This procedure, which takes less operative time than standard techniques, is safe and combines efficient cutting and rapid organic vaporization, thereby showing the great superiority of the thulium fiber laser in the treatment of BPH. It has been proven to be as safe and efficient as transurethral resection of the prostate （TURP） during the 1-year follow-up.
文摘The 2-1μm thulium laser resection of the prostate-tangerine technique （TmLRP-TT） has been introduced as a minimally invasive treatment for benign prostatic hyperplasia （BPH）. This study was undertaken to assess the clinical efficacy and safety of TmLRP-TT for the treatment of BPH patients with previously negative transrectal prostate biopsy. A prospective analysis of 51 patients with previously negative transrectal prostate biopsy who underwent surgical treatment using TmLRP-TT was performed from December 2011 to December 2013. Preoperative status, surgical details, and perioperative complications were recorded. The follow-up outcome was evaluated with subjective and objective tests at I and 6 months. TmLRP-TT was successfully completed in all patients. Mean prostate volume, operative duration, and catheterization time were 93.3 ± 37.9 ml, 69.5 ± 39.5 min, and 6.5 ± 1.3 days, respectively. The mean International Prostate Symptom Score, quality of life score, maximum urinary flow rate, and post-void residual urine volume changed notably at 6-month follow-up （22.5 ± 6.9 vs 6.1 ± 3.2, 4.8 ± 1.3 vs 1.1 ± 0.9, 7.3 ± 4.5 vs 18.9 ± 7.1 ml s^-1, and 148.7 ± 168.7 vs 28.4 ± 17.9 ml）. Two （3.9%） patients required blood transfusion perioperatively, while 3 （5.9%） patients experienced transient hematuria postoperatively, and 2 （3.9%） patients received 3 days recatheterization due to clot retention. TmLRP-TT is a safe and effective minimally invasive technique for patients with previously negative transrectal prostate biopsy during the 6-month follow-up. This promising technology may be a feasible surgical method for previously negative transrectal prostate biopsy in the future.
文摘Ethion residue removal efficiency using individual and combined effects of ultrasonication (US), ozonation (O3), ultrasonication and ozonation (US/O3) was investigated. A 1 mg·L-1 standard ethion was subjected to an ultrasonic irradiation (3W input power) device with different frequencies of 108, 400, 700, 1000 kHz, and to an ozone with a concentration of 200 mg· mL-1 with various exposure times (0, 15, 30, 45 and 60 minutes). Reduction of residual ethion was determined by gas chromatography with flame photometric detection (GC-FPD). It was found that 1000 kHz ultrasonic irradiation for 60 minutes was the most effective treatment for reducing ethion concentration. Additionally, ozone could reduce the concentration of standard ethion after 60 minutes of exposure. Ultrasonic irradiation in combination with ozone had a synergistic effect in reducing standard ethion concentration, with the highest rate occurring within the first 15 minutes. Ethion concentration was reduced to 75.43% after ultrasonic irradiation at 1000 kHz and ozone exposure for 60 minutes. The effectiveness of the combined scheme for reducing of ethion residues on tangerine was also determined by GC-FPD. The ethion residue on fresh tangerines after ultrasonic irradiation and ozone washing was reduced by 73.03% after 60 minutes. The present study demonstrates that ultrasonic irradiation and ozone exposure could be used to reduce ethion residues in treated tangerine in order to meet the Standards for Pesticide Residue Limits.
文摘Green chemistry methods for production of nanoparticles have many advantages, such as ease of use, which makes the methods desirable and economically viable. The aim of the present work was to green synthesise silver nanoparticles (SNPs) using aqueous tangerine peel extract in different ratios (2:1, 1:1, 1:2). The formed SNPs were characterised using ultraviolet-visible (UV-Vis) spectrophotometry, and transmission electron microscopy (TEM). The UV-Vis spectra showed that the highest absorbance was observed when the ratio of peel tangerine extract to silver nitrate solution was 1:2. The transmission electron micrographs showed the formation of poly dispersed nanoparticles. It was found that the average diameter of the nanoparticles was 30.29 ± 5.1 nm, 16.68 ± 5.7 nm, and 25.85 ± 8.4 nm, using a tangerine peel solution and silver nitrate solution ratio of 2:1, 1:1, and 1:2, respectively. The formed SNPs were evaluated as catalysts for methyl orange dye degradation, and the results confirmed that SNPs can speed up the degradation of the dye.
基金National Natural Science Foundation of Chinagrant number:10172043+1 种基金International Science and Technology Cooperation Programgrant number:BZ2008060
文摘This paper presents a new method to study the interaction between tangerine peel and beer by absorption spectrum.The author explores the change laws and the differences of the absorbance on some wave band from the absorption spectrums of tangerine peel and the mixture of tangerine peel and beer. The results show that there is an obvious difference around 323 nm though the absorbance values of the two samples are almost similar in the most bands. The absorbance value of the mixture is obviously greater than that of tangerine peel at 276 nm in the spectrums, and there is a shift of the peak position in the absorption spectrum of the mixture, which shows the differences of the absorbance values and the peak positions of the two samples. Through comparing the characteristics of the two samples' absorption spectrums, a new method for researching new pharmacological action of tangerine peel is presented in this paper. The result indicates that the technology of spectrum analysis will play an important role in the research and development of Chinese herbal pharmacology and new pharmacology.
基金received a PhD fellowship from National Counsel of Technological and Scientific Development(CNPq)a post-doctoral fellowship from CAPES-EMBRAPA+1 种基金a PhD fellowship from Coordenacao de Aperfeicoamento de Pessoal de Nível Superior(CAPES)a fellowship Programa Institucional de Bolsas de Iniciacao Científica(PIBIC)from CNPq.
文摘The tangerine pathotype of Alternaria alternata is the aetiological agent of Alternaria brown spot on tangerines. In the state of Paraíba, Brazil, its occurrence on “Dancy” tangerine trees is associated with genetic aspects as well as the influence of environmental conditions on reproduction and dissemination within and between populations. The aim of the present study was to evaluate the diversity of isolates of this pathogen using morphophysiological and molecular markers. For the analysis of mycelial growth and sporulation, 30 isolates from different locations were examined at 24-hour intervals until the seventh day, when the spores were quantified. The 30 isolates were characterised based on molecular markers (ISSR) and genetic similarity (Jaccard index). A factor arrangement was used: 30 isolates, four media (ODA, PDA, LEA and V8), three light regimes (continuous dark, alternating light and continuous light) and three temperatures (15°C, 25°C and 35°C), with 12 repetitions. Groups 1, 2 and 3 presented low genetic variability. Group 4 showed high genetic variability of the isolates obtained from the Massaranduba (state of Paraíba-Brazil) producing region and higher mycelial growth and sporulation of A. alternata. The continuous light regime and the temperature 25°C in PDA and V8 media were the ideal conditions for the mycelial growth and sporulation, respectively, of the isolates of A. alternata.
文摘A new cranium and two mandibles of Ailuropoda melanoleuca from Xiangxi,Hunan Province are described here.The materials were discovered in a karst cave on the Bamian Mountain at an altitude of 1200 m,with AMC carbon-fourteen isotope dating indicating an age of 2800±30 BP.Historically,the giant panda was widely distributed in southern China and parts of Southeast Asia during the Pleistocene epoch,but it is now confined and isolated to six mountain ranges in southwest China’s Sichuan,Shaanxi,and Gansu provinces.The subfossil materials reported here represent the first discovery of the living species of giant panda in Xiangxi,Hunan.This extends their geographical distribution in southern China during the Holocene epoch eastward to the eastern edge of the Yunnan-Guizhou Plateau and their recent altitude range down to 1200 m.
基金supported by the Open Fund of the Granite Formation Research Center of China Geological Survey(grant numbers PMGR202009,PMGR202108,PMGR202115)the Geological Survey of China(grant number DD20190154).
文摘To assess the effect of mining activity on heavy metal pollution and associated health risks in tin mining regions,water and soil sampling was conducted near a tin mining site in Hunan Province.The content and distribution of heavy metals were determined.Pollution,ecological risks,and potential health hazards were evaluated using the ground accumulation index,potential ecological risk index,and health risk assessment models,respectively.The results indicated elevated levels of heavy metals in water and soil samples compared to acceptable background values.Ground accumulation index assessment revealed extreme pollution of soil with As and Cd and moderate pollution with Cu,Pb,and Zn.Cr and Hg were categorized as non-pollutants.Water samples exhibited extreme pollution levels of Hg,Cr,Cd,and As;moderate pollution levels of Pb;and moderate to high pollution levels of Cu and Zn.The tin mining area demonstrated a significantly high level of potential ecological risk,where As and Cd were the primary risk elements in soil,whereas Cr,Cd,and As contributed predominantly to water ecological risk.The human health risk assessment highlighted As,Cd,Cr,Hg,Pb,and Cu in water and As and Pb in soil as the principal non-carcinogenic factors.The primary carcinogenic factors were As,Cr,and Cd in water and As in soil,with As posing the greatest risk for non-carcinogenic and carcinogenic effects.Furthermore,oral intake was the primary exposure route,with children being particularly vulnerable to the adverse effects of heavy metal pollution.
文摘The cultural relics on display at this museum have become a window for visitors to get a glimpse of Chinese civilization thousands of years ago.THE Hunan Museum in Changsha is the largest history museum in Hunan Province.It houses over 570,000 items in its collection,featuring relics from the Mawangdui Han Dynasty Tombs,bronzeware from the Shang(1600 B.C.-1046 B.C.)and Zhou(1046 B.C.-256 B.C.)dynasties,Chu State historical artifacts,and other objects.
基金Supported by Research Innovation Program for College Graduates of Hunan Province(CX20231269).
文摘[Objectives]This study was conducted to better understand the occurrence status of thrips in Central Hunan,clarify thrips species,and provide a basis for scientific control.[Methods]The occurrence of thrips in the Central Hunan Region were investigated and analyzed.Through field collection,molecular biological identification and sequencing,thrips populations in the region were identified.[Results]Six species of thrips infesting vegetable crops were identified in the Central Hunan Region,with Megalurothrips usitatus,Thrips palmi,and Frankliniella intonsa being the dominant species.These pests were particularly severe on leguminous and cucurbit crops.[Conclusions]Combined with integrated control strategies,this study provides theoretical and technical support for the scientific management of thrips in the Central Hunan Region,ensuring the sustainable development of the local vegetable industry.
基金Under the auspices of the National Natural Science Foundation of China(No.42471241,41971219,41571168)Hunan Provincial Natural Science Foundation(No.2020JJ4372)。
文摘In the context of the era of carbon peaking and carbon neutrality,clarifying the emission patterns of non-CO_(2)Greenhouse Gas(GHG)from agricultural sources is of practical significance to China’s implementation of greenhouse gas emission reduction policies.The Intergovernmental Panel on Climate Change(IPCC)coefficient method was used to calculate non-CO_(2)GHG emissions from agricultural sources in 122 counties in Hunan Province,China,from 2010 to 2020,and the spatiotemporal evolution characteristics of emission intensity were analyzed.The Stochastic Impacts by Regression on Population,Affluence,and Technology(STRIPAT)model forecasted the prospective evolution of non-CO_(2)GHG emissions from agricultural sources at the county level under various scenarios from 2030 to 2050.The results demonstrated a general decline in non-CO_(2)GHG emissions from agricultural sources within the study area,with 75.41%of counties exhibiting a reduction in emissions.Geographically,emissions were higher in the Dongting Lake area and central Hengyang.The emission intensity per unit of agricultural added value and the intensity per unit of agricultural land area showed an overall downward trend.Spatially,the emission intensity per unit of farmland area in a few counties(cities,districts)in southern Hunan was still relatively high.By forecasting the non-CO_(2)GHG emissions from agricultural sources,the majority of counties(cities and districts)demonstrated a gradual decline in emissions,suggesting that agricultural production had the potential to reduce emissions in the future,while also facing certain pressure to reduce emissions.It is recommended that Hunan Province formulate agricultural carbon emission reduction policies that take regional development differences into account.This would provide a reference for future agricultural carbon emission reduction research in the whole country.
