Pinewood nematode is a devastating forest pathogen and is considered a quarantine organism worldwide.First identified in China 40 years ago,the disease has been spreading since.In response,Chinese authorities have int...Pinewood nematode is a devastating forest pathogen and is considered a quarantine organism worldwide.First identified in China 40 years ago,the disease has been spreading since.In response,Chinese authorities have introduced new requirements for preventing and controlling the disease.This paper proposes a new and highly effective preventive drug,a trunk injection agent usable at normal temperatures.Its use is suggested for localized epidemic areas to reduce diseased and dead trees and as a preventive measure in adjacent non-epidemic areas to prevent the infection from spreading,particularly protecting important and ancient pine trees.展开更多
William Somerset Maugham was one of the most popular British writers of his era.Many of his works are closely related to China,among which is the famous novel The Painted Veil.This novel narrates the love story betwee...William Somerset Maugham was one of the most popular British writers of his era.Many of his works are closely related to China,among which is the famous novel The Painted Veil.This novel narrates the love story between the heroine Kitty,an attractive but vainglorious middle-class lady,and the intelligent bacteriologist Walter Fane.This thesis aims at exploring the hetero image of China in The Painted Veil from the perspective of imagology.It comprises four chapters.Chapter one introduces the definition of the terms“Image”and“hetero image”.Chapter two analyzes Maugham’s diversified concepts of China:one is the positive and good image,and the other is the negative image.Chapter three illustrates the specific images of China revealed in the novel The Painted Veil,on both positive and negative aspects.After the exploration of the image of China from the perspective of imagology,we can sum up that actually,the image of China in Maugham’s eyes indicated in The Painted Veil is not the real China.It is a combination of the real world observed by Maugham and the imaginative world conceived by him influenced by his own specific culture and society.展开更多
The continental hydrocarbon generation theory has opened a new field of oil and gas development and once solved the oil and gas shortage problem in China.Since then,geological theories of coalbed methane accumulation,...The continental hydrocarbon generation theory has opened a new field of oil and gas development and once solved the oil and gas shortage problem in China.Since then,geological theories of coalbed methane accumulation,foreland basin oil and gas accumulation,carbonate rock oil and gas accumulation,superimposed basin,and deep oil and gas accumulation have contributed to relieving the pressure of oil and gas shortage in China.展开更多
Since 2015,stroke has become the leading cause of death and disability in China,posing a significant threat to the health of its citizens as a major chronic non-communicable disease.According to the China Stroke High-...Since 2015,stroke has become the leading cause of death and disability in China,posing a significant threat to the health of its citizens as a major chronic non-communicable disease.According to the China Stroke High-risk Population Screening and Intervention Program,an estimated 17.8 million[95%confidence interval(CI)17.6–18.0million]adults in China had experienced a stroke in 2020,with 3.4 million(95%CI 3.3–3.5 million)experiencing their first-ever stroke and another 2.3 million(95%CI 2.2–2.4 million)dying as a result.Additionally,approximately 12.5%(95%CI 12.4%–12.5%)of stroke survivors were left disabled,as defined by a modified Rankin Scale score greater than 1,equating to 2.2 million(95%CI 2.1–2.2 million)stroke-related disabilities in 2020.As the population ages and the prevalence of risk factors like diabetes,hypertension,and hyperlipidemia continues to rise and remains poorly controlled,the burden of stroke in China is also increasing.A large national epidemiological survey initiated by the China Hypertension League in 2017 showed that the prevalence of hypertension was 24.7%;the awareness,treatment,and control rates in hypertensive patients were:60.1%,42.5%,and 25.4%,respectively.A nationally representative sample of the Chinese mainland population showed that the weighted prevalence of total diabetes diagnosed by the American Diabetes Association criteria was 12.8%,suggesting there are 120 million adults with diabetes in China,and the awareness,treatment,and control rates in diabetic patients were:43.3%,49.0%,and 49.4%,respectively.The“Sixth National Health Service Statistical Survey Report in 2018”showed that the proportion of the obese population in China was 37.4%,an increase of 7.2 points from 2013.Data from 1599 hospitals in the Hospital Quality Monitoring System and Bigdata Observatory Platform for Stroke of China(BOSC)showed that a total of 3,418,432 stroke cases[mean age±standard error(SE)was(65.700±0.006)years,and 59.1%were male]were admitted during 2020.Of those,over 80.0%(81.9%)were ischemic stroke(IS),14.9%were intracerebral hemorrhage(ICH)strokes,and 3.1%were subarachnoid hemorrhage(SAH)strokes.The mean±SE of hospitalization expenditures was Chinese Yuan(CNY)(16,975.6±16.3),ranging from(13,310.1±12.8)in IS to(81,369.8±260.7)in SAH,and out-of-pocket expenses were(5788.9±8.6),ranging from(4449.0±6.6)in IS to(30,778.2±156.8)in SAH.It was estimated that the medical cost of hospitalization for stroke in 2020 was CNY 58.0 billion,of which the patient pays approximately CNY 19.8 billion.In-hospital death/discharge against medical advice rate was 9.2%(95%CI 9.2%–9.2%),ranging from 6.4%(95%CI 6.4%–6.5%)for IS to 21.8%(95%CI 21.8%–21.9%)for ICH.From 2019 to 2020,the information about 188,648 patients with acute IS receiving intravenous thrombolytic therapy(IVT),49,845 patients receiving mechanical thrombectomy(MT),and 14,087 patients receiving bridging(IVT+MT)were collected through BOSC.The incidence of intracranial hemorrhage during treatment was 3.2%(95%CI 3.2%–3.3%),7.7%(95%CI 7.5%–8.0%),and 12.9%(95%CI 12.3%–13.4%),respectively.And in-hospital death/discharge against medical advice rate was 8.9%(95%CI 8.8%–9.0%),16.5%(95%CI 16.2%–16.9%),and 16.8%(95%CI 16.2%–17.4%),respectively.A prospective nationwide hospital-based study was conducted at 231 stroke base hospitals(Level III)from 31 provinces in China through BOSC from January 2019to December 2020 and 136,282 stroke patients were included and finished 12-month follow-up.Of those,over 86.9%were IS,10.8%were ICH strokes,and 2.3%were SAH strokes.The disability rate[%(95%CI)]in survivors of stroke at 3-month and 12-month was 14.8%(95%CI 14.6%–15.0%)and 14.0%(95%CI 13.8%–14.2%),respectively.The mortality rate[%(95%CI)]of stroke at 3-month and 12-month was 4.2%(95%CI 4.1%–4.3%)and 8.5%(95%CI 8.4%–8.6%),respectively.The recurrence rate[%(95%CI)]of stroke at 3-month and 12-month was 3.6%(95%CI 3.5%–3.7%)and 5.6%(95%CI 5.4%–5.7%),respectively.The Healthy China 2030 Stroke Action Plan was launched as part of this review,and the above data provide valuable guidelines for future stroke prevention and treatment efforts in China.展开更多
The Journal of Data and Information Science(JDIS),being sponsored by the Chinese Academy of Sciences(CAS)and published quarterly by the National Science Library of CAS,is the first internationally published English-la...The Journal of Data and Information Science(JDIS),being sponsored by the Chinese Academy of Sciences(CAS)and published quarterly by the National Science Library of CAS,is the first internationally published English-language academic journal in the data and information science and related fields from China.展开更多
Through core observation,thin section identification,X-ray diffraction analysis,scanning electron microscopy,and low-temperature nitrogen adsorption and isothermal adsorption experiments,the lithology and pore charact...Through core observation,thin section identification,X-ray diffraction analysis,scanning electron microscopy,and low-temperature nitrogen adsorption and isothermal adsorption experiments,the lithology and pore characteristics of the Upper Carboniferous bauxite series in eastern Ordos Basin were analyzed to reveal the formation and evolution process of the bauxite reservoirs.A petrological nomenclature and classification scheme for bauxitic rocks based on three units(aluminum hydroxides,iron minerals and clay minerals)is proposed.It is found that bauxitic mudstone is in the form of dense massive and clastic structures,while the(clayey)bauxite is of dense massive,pisolite,oolite,porous soil and clastic structures.Both bauxitic mudstone and bauxite reservoirs develop dissolution pores,intercrystalline pores,and microfractures as the dominant gas storage space,with the porosity less than 10% and mesopores in dominance.The bauxite series in the North China Craton can be divided into five sections,i.e.,ferrilite(Shanxi-style iron ore,section A),bauxitic mudstone(section B),bauxite(section C),bauxite mudstone(debris-containing,section D)and dark mudstone-coal section(section E).The burrow/funnel filling,lenticular,layered/massive bauxite deposits occur separately in the karst platforms,gentle slopes and low-lying areas.The karst platforms and gentle slopes are conducive to surface water leaching,with strong karstification,well-developed pores,large reservoir thickness and good physical properties,but poor strata continuity.The low-lying areas have poor physical properties but relatively continuous and stable reservoirs.The gas enrichment in bauxites is jointly controlled by source rock,reservoir rock and fractures.This recognition provides geological basis for the exploration and development of natural gas in the Upper Carboniferous in the study area and similar bauxite systems.展开更多
Calcium production and the stellar evolution of first-generation stars remain fascinating mysteries in astrophysics.As one possible nucleosynthesis scenario,break-out from the hot carbon–nitrogen–oxygen(HCNO)cycle w...Calcium production and the stellar evolution of first-generation stars remain fascinating mysteries in astrophysics.As one possible nucleosynthesis scenario,break-out from the hot carbon–nitrogen–oxygen(HCNO)cycle was thought to be the source of the calcium observed in these oldest stars.However,according to the stellar modeling,a nearly tenfold increase in the thermonuclear rate ratio of the break-out ^(19)F(p,γ)^(20) Ne reaction with respect to the competing ^(19)F(p,α)^(16) O back-processing reaction is required to reproduce the observed calcium abundance.We performed a direct measurement of this break-out reaction at the China Jinping underground laboratory.The measurement was performed down to the low-energy limit of E_(c.m.)=186 keV in the center-of-mass frame.The key resonance was observed at 225.2 keV for the first time.At a temperature of approximately 0.1 GK,this new resonance enhanced the thermonuclear ^(19)F(p,γ)^(20) Ne rate by up to a factor of≈7.4,compared with the previously recommended NACRE rate.This is of particular interest to the study of the evolution of the first stars and implies a stronger breakdown in their“warm”CNO cycle through the ^(19)F(p,γ)^(20) Ne reaction than previously envisioned.This break-out resulted in the production of the calcium observed in the oldest stars,enhancing our understanding of the evolution of the first stars.展开更多
在当今世界文化交流愈发频繁的背景下,推动中华文明走向世界成为重中之重。翻译作为推动跨文化交流的重要手段之一,是连接不同文化的桥梁。而文化负载词由于其涵盖的大量民族特色词汇,成为翻译过程中的挑战,同时也是文化传播的重要工具...在当今世界文化交流愈发频繁的背景下,推动中华文明走向世界成为重中之重。翻译作为推动跨文化交流的重要手段之一,是连接不同文化的桥梁。而文化负载词由于其涵盖的大量民族特色词汇,成为翻译过程中的挑战,同时也是文化传播的重要工具。文章基于目的论视角,以纪录片Seasons of China中的中文文化负载词英译为例,探讨译者在翻译过程中采取的恰当翻译方法,以期为纪录片的文化负载词翻译研究提供一定的借鉴与参考。展开更多
On December 26th,2017,the meeting on the selection of the 2017 top ten news of China’s paper industry,sponsored by China Paper Newsletters,was held in China National Pulp and Paper Research Institute Co.,Ltd.,Beijing...On December 26th,2017,the meeting on the selection of the 2017 top ten news of China’s paper industry,sponsored by China Paper Newsletters,was held in China National Pulp and Paper Research Institute Co.,Ltd.,Beijing.The yearly selection of the top ten news,which began in 2000,has become a brand activity within the industry and is widely accepted and greatly appreciated throughout due to the care and support from leaders at all levels and industry colleagues as well as the attention of warm hearted reading public.展开更多
I.Production and Consumption of Paper&Board 1.The General Situation of 2019 According to the survey made by China Paper Association(CPA),in 2019,there were about 2,700 paper&board manufacturers in China's ...I.Production and Consumption of Paper&Board 1.The General Situation of 2019 According to the survey made by China Paper Association(CPA),in 2019,there were about 2,700 paper&board manufacturers in China's Mainland.The total production of paper&board was 107.65 million tons,increased by 3.16%and the total consumption was 107.04 million tons,increased by 2.54%compared with the previous year respectively.展开更多
Quantifying the biomass of saplings in the regeneration component is critical for understanding biogeochemical processes of forest ecosystems.However,accurate allometric equations have yet to be developed in sufficien...Quantifying the biomass of saplings in the regeneration component is critical for understanding biogeochemical processes of forest ecosystems.However,accurate allometric equations have yet to be developed in sufficient detail.To develop species-specific and generalized allometric equations,154 saplings of eight Fagaceae tree species in subtropical China’s evergreen broadleaved forests were collected.Three dendrometric variables,root collar diameter(d),height(h),and crown area(ca)were applied in the model by the weighted nonlinear seemingly unrelated regression method.Using only d as an input variable,the species-specific and generalized allometric equations estimated the aboveground biomass reasonably,with R _(adj)^(2) values generally>0.85.Adding h and/or ca improved the fitting of some biomass components to a certain extent.Generalized equations showed a relatively large coefficient of variation but comparable bias to species-specific equations.Only in the absence of species-specific equations at a given location are generalized equations for mixed species recommended.The developed regression equations can be used to accurately calculate the aboveground biomass of understory Fagaceae regeneration trees in China’s subtropical evergreen broadleaved forests.展开更多
由美国克劳斯公司、美国制浆造纸技术协会和中国造纸学会联合主办的“China Paper 2005”造纸技术报告会将在“第十三届中国国际纸浆造纸、林业展览会”开幕前夕，于2005年9月19日在北京国际展览中心举行，届时欢迎各界朋友踊跃参加。...由美国克劳斯公司、美国制浆造纸技术协会和中国造纸学会联合主办的“China Paper 2005”造纸技术报告会将在“第十三届中国国际纸浆造纸、林业展览会”开幕前夕，于2005年9月19日在北京国际展览中心举行，届时欢迎各界朋友踊跃参加。报告会主要内容及日程安排如下：展开更多
2017 was a year of rejoicing for the China’s paper industry!During the year,most paper companies in China sang all the way,and whose profits boosted by the sharp rise in paper prices.According to the statistics relea...2017 was a year of rejoicing for the China’s paper industry!During the year,most paper companies in China sang all the way,and whose profits boosted by the sharp rise in paper prices.According to the statistics released by the National Bureau of Statistics,in 2017,there were 2,754 paper and board producers whose scales were above the statistical threshold,the total pre-tax profits of which was RMB 66.6 billion,increased by 55.63%compared with 2016.展开更多
According to the survey made by China Paper Association(CPA),in 2017,there were about 2,800 paper&board manufacturers in China's Mainland.The total production and consumption of paper&board were 111.30 mil...According to the survey made by China Paper Association(CPA),in 2017,there were about 2,800 paper&board manufacturers in China's Mainland.The total production and consumption of paper&board were 111.30 million tons and 108.97 million tons,increased by 2.53%and 4.59%compared with the previous year respectively;paper&board per capita consumption was 78 kg.From 2008 to 2017,the average annual growth rate of paper&board production was 3.77%,and the average annual growth rate of paper&board consumption was 3.59%.As shown in Fig.1 and Table 1.展开更多
In order to implement the Environmental Protection Law of the People’s Republic of China and improve the quality of the environment,to implement the Notice of the General Office of the State Council on Issuing the Im...In order to implement the Environmental Protection Law of the People’s Republic of China and improve the quality of the environment,to implement the Notice of the General Office of the State Council on Issuing the Implementation Plan for the Control of Pollutant Discharge Permit System(the General Office of the State Council issued[2016]No.81),to establish a sound available technology system in pollutant discharge standard basis and to promote the upgrading and reforming of pollution prevention measures and technological progress in enterprises and institutions,on January 5th,2018,the Ministry of Environmental Protection issued the National Environmental Protection Standard Available Technology Guide for Pollution Prevention and Control of the Pulp and Paper Industry(HJ 2302—2018).展开更多
In order to further standardize the management of environmental impact assessment,in accordance with relevant regulations of the Law of the People’s Republic of China on Environmental Impact Assessment and the Regula...In order to further standardize the management of environmental impact assessment,in accordance with relevant regulations of the Law of the People’s Republic of China on Environmental Impact Assessment and the Regulations on the Administration of Environmental Protection of Construction Projects,according to the requirements of Notice on Issuing Major Changes list in Construction Projects for Certain Industries in Environmental Impact Assessment Management,combining environmental impact characteristics of different industries,the Ministry of Environmental Protection has formulated a list of major changes in construction projects for 14 industries including pulp and papermaking(trial)and released it on February 9th,2018.展开更多
This study aims to analysis the influence of economic growth(EG)and energy consumption(EC)on sulfur dioxide emissions(SE)in China.Accordingly,this study explores the link between EG,EC,and SE for 30 provinces in China...This study aims to analysis the influence of economic growth(EG)and energy consumption(EC)on sulfur dioxide emissions(SE)in China.Accordingly,this study explores the link between EG,EC,and SE for 30 provinces in China over the span of 2000-2019.This study also analyzes cross-sectional dependence tests,panel unit root tests,Westerlund panel cointegration tests,Dumitrescu-Hurlin(D-H)causality tests.According to the test results,there is an inverted U-shaped association between EG and SE,and the assumption of the Environmental Kuznets Curve(EKC)is verified.The signs of EG and EC in the fixed effect(FE)and random effect(RE)methods are in line with those in the dynamic ordinary least squares(DOLS),fully modified ordinary least squares(FMOLS)and autoregressive distributed lag(ARDL)estimators.Moreover,the results verified that EC can obviously positive impact the SE.To reduce SE in China,government and policymakers can improve air quality by developing cleaner energy sources and improving energy efficiency.This requires the comprehensive use of policies,regulations,economic incentives,and public participation to promote sustainable development.展开更多
基金supported by the National Key Research and Development Program of China(Grant Number:2021YFD1400903).
文摘Pinewood nematode is a devastating forest pathogen and is considered a quarantine organism worldwide.First identified in China 40 years ago,the disease has been spreading since.In response,Chinese authorities have introduced new requirements for preventing and controlling the disease.This paper proposes a new and highly effective preventive drug,a trunk injection agent usable at normal temperatures.Its use is suggested for localized epidemic areas to reduce diseased and dead trees and as a preventive measure in adjacent non-epidemic areas to prevent the infection from spreading,particularly protecting important and ancient pine trees.
文摘William Somerset Maugham was one of the most popular British writers of his era.Many of his works are closely related to China,among which is the famous novel The Painted Veil.This novel narrates the love story between the heroine Kitty,an attractive but vainglorious middle-class lady,and the intelligent bacteriologist Walter Fane.This thesis aims at exploring the hetero image of China in The Painted Veil from the perspective of imagology.It comprises four chapters.Chapter one introduces the definition of the terms“Image”and“hetero image”.Chapter two analyzes Maugham’s diversified concepts of China:one is the positive and good image,and the other is the negative image.Chapter three illustrates the specific images of China revealed in the novel The Painted Veil,on both positive and negative aspects.After the exploration of the image of China from the perspective of imagology,we can sum up that actually,the image of China in Maugham’s eyes indicated in The Painted Veil is not the real China.It is a combination of the real world observed by Maugham and the imaginative world conceived by him influenced by his own specific culture and society.
文摘The continental hydrocarbon generation theory has opened a new field of oil and gas development and once solved the oil and gas shortage problem in China.Since then,geological theories of coalbed methane accumulation,foreland basin oil and gas accumulation,carbonate rock oil and gas accumulation,superimposed basin,and deep oil and gas accumulation have contributed to relieving the pressure of oil and gas shortage in China.
基金supported by the National Major Public Health Service Projects(Z135080000022)。
文摘Since 2015,stroke has become the leading cause of death and disability in China,posing a significant threat to the health of its citizens as a major chronic non-communicable disease.According to the China Stroke High-risk Population Screening and Intervention Program,an estimated 17.8 million[95%confidence interval(CI)17.6–18.0million]adults in China had experienced a stroke in 2020,with 3.4 million(95%CI 3.3–3.5 million)experiencing their first-ever stroke and another 2.3 million(95%CI 2.2–2.4 million)dying as a result.Additionally,approximately 12.5%(95%CI 12.4%–12.5%)of stroke survivors were left disabled,as defined by a modified Rankin Scale score greater than 1,equating to 2.2 million(95%CI 2.1–2.2 million)stroke-related disabilities in 2020.As the population ages and the prevalence of risk factors like diabetes,hypertension,and hyperlipidemia continues to rise and remains poorly controlled,the burden of stroke in China is also increasing.A large national epidemiological survey initiated by the China Hypertension League in 2017 showed that the prevalence of hypertension was 24.7%;the awareness,treatment,and control rates in hypertensive patients were:60.1%,42.5%,and 25.4%,respectively.A nationally representative sample of the Chinese mainland population showed that the weighted prevalence of total diabetes diagnosed by the American Diabetes Association criteria was 12.8%,suggesting there are 120 million adults with diabetes in China,and the awareness,treatment,and control rates in diabetic patients were:43.3%,49.0%,and 49.4%,respectively.The“Sixth National Health Service Statistical Survey Report in 2018”showed that the proportion of the obese population in China was 37.4%,an increase of 7.2 points from 2013.Data from 1599 hospitals in the Hospital Quality Monitoring System and Bigdata Observatory Platform for Stroke of China(BOSC)showed that a total of 3,418,432 stroke cases[mean age±standard error(SE)was(65.700±0.006)years,and 59.1%were male]were admitted during 2020.Of those,over 80.0%(81.9%)were ischemic stroke(IS),14.9%were intracerebral hemorrhage(ICH)strokes,and 3.1%were subarachnoid hemorrhage(SAH)strokes.The mean±SE of hospitalization expenditures was Chinese Yuan(CNY)(16,975.6±16.3),ranging from(13,310.1±12.8)in IS to(81,369.8±260.7)in SAH,and out-of-pocket expenses were(5788.9±8.6),ranging from(4449.0±6.6)in IS to(30,778.2±156.8)in SAH.It was estimated that the medical cost of hospitalization for stroke in 2020 was CNY 58.0 billion,of which the patient pays approximately CNY 19.8 billion.In-hospital death/discharge against medical advice rate was 9.2%(95%CI 9.2%–9.2%),ranging from 6.4%(95%CI 6.4%–6.5%)for IS to 21.8%(95%CI 21.8%–21.9%)for ICH.From 2019 to 2020,the information about 188,648 patients with acute IS receiving intravenous thrombolytic therapy(IVT),49,845 patients receiving mechanical thrombectomy(MT),and 14,087 patients receiving bridging(IVT+MT)were collected through BOSC.The incidence of intracranial hemorrhage during treatment was 3.2%(95%CI 3.2%–3.3%),7.7%(95%CI 7.5%–8.0%),and 12.9%(95%CI 12.3%–13.4%),respectively.And in-hospital death/discharge against medical advice rate was 8.9%(95%CI 8.8%–9.0%),16.5%(95%CI 16.2%–16.9%),and 16.8%(95%CI 16.2%–17.4%),respectively.A prospective nationwide hospital-based study was conducted at 231 stroke base hospitals(Level III)from 31 provinces in China through BOSC from January 2019to December 2020 and 136,282 stroke patients were included and finished 12-month follow-up.Of those,over 86.9%were IS,10.8%were ICH strokes,and 2.3%were SAH strokes.The disability rate[%(95%CI)]in survivors of stroke at 3-month and 12-month was 14.8%(95%CI 14.6%–15.0%)and 14.0%(95%CI 13.8%–14.2%),respectively.The mortality rate[%(95%CI)]of stroke at 3-month and 12-month was 4.2%(95%CI 4.1%–4.3%)and 8.5%(95%CI 8.4%–8.6%),respectively.The recurrence rate[%(95%CI)]of stroke at 3-month and 12-month was 3.6%(95%CI 3.5%–3.7%)and 5.6%(95%CI 5.4%–5.7%),respectively.The Healthy China 2030 Stroke Action Plan was launched as part of this review,and the above data provide valuable guidelines for future stroke prevention and treatment efforts in China.
文摘The Journal of Data and Information Science(JDIS),being sponsored by the Chinese Academy of Sciences(CAS)and published quarterly by the National Science Library of CAS,is the first internationally published English-language academic journal in the data and information science and related fields from China.
基金Supported by the PetroChina Science and Technology Innovation Fund Project(2021DQ02-1003)Basic Research Project for Central Universities(2022JCCXDC02).
文摘Through core observation,thin section identification,X-ray diffraction analysis,scanning electron microscopy,and low-temperature nitrogen adsorption and isothermal adsorption experiments,the lithology and pore characteristics of the Upper Carboniferous bauxite series in eastern Ordos Basin were analyzed to reveal the formation and evolution process of the bauxite reservoirs.A petrological nomenclature and classification scheme for bauxitic rocks based on three units(aluminum hydroxides,iron minerals and clay minerals)is proposed.It is found that bauxitic mudstone is in the form of dense massive and clastic structures,while the(clayey)bauxite is of dense massive,pisolite,oolite,porous soil and clastic structures.Both bauxitic mudstone and bauxite reservoirs develop dissolution pores,intercrystalline pores,and microfractures as the dominant gas storage space,with the porosity less than 10% and mesopores in dominance.The bauxite series in the North China Craton can be divided into five sections,i.e.,ferrilite(Shanxi-style iron ore,section A),bauxitic mudstone(section B),bauxite(section C),bauxite mudstone(debris-containing,section D)and dark mudstone-coal section(section E).The burrow/funnel filling,lenticular,layered/massive bauxite deposits occur separately in the karst platforms,gentle slopes and low-lying areas.The karst platforms and gentle slopes are conducive to surface water leaching,with strong karstification,well-developed pores,large reservoir thickness and good physical properties,but poor strata continuity.The low-lying areas have poor physical properties but relatively continuous and stable reservoirs.The gas enrichment in bauxites is jointly controlled by source rock,reservoir rock and fractures.This recognition provides geological basis for the exploration and development of natural gas in the Upper Carboniferous in the study area and similar bauxite systems.
基金supported by the National Natural Science Foundation of China(Nos.12075027,1232509,11961141004,and 12175152)the National Science Foundation(Nos.Phys-2011890 and Phy-1430152)。
文摘Calcium production and the stellar evolution of first-generation stars remain fascinating mysteries in astrophysics.As one possible nucleosynthesis scenario,break-out from the hot carbon–nitrogen–oxygen(HCNO)cycle was thought to be the source of the calcium observed in these oldest stars.However,according to the stellar modeling,a nearly tenfold increase in the thermonuclear rate ratio of the break-out ^(19)F(p,γ)^(20) Ne reaction with respect to the competing ^(19)F(p,α)^(16) O back-processing reaction is required to reproduce the observed calcium abundance.We performed a direct measurement of this break-out reaction at the China Jinping underground laboratory.The measurement was performed down to the low-energy limit of E_(c.m.)=186 keV in the center-of-mass frame.The key resonance was observed at 225.2 keV for the first time.At a temperature of approximately 0.1 GK,this new resonance enhanced the thermonuclear ^(19)F(p,γ)^(20) Ne rate by up to a factor of≈7.4,compared with the previously recommended NACRE rate.This is of particular interest to the study of the evolution of the first stars and implies a stronger breakdown in their“warm”CNO cycle through the ^(19)F(p,γ)^(20) Ne reaction than previously envisioned.This break-out resulted in the production of the calcium observed in the oldest stars,enhancing our understanding of the evolution of the first stars.
文摘在当今世界文化交流愈发频繁的背景下,推动中华文明走向世界成为重中之重。翻译作为推动跨文化交流的重要手段之一,是连接不同文化的桥梁。而文化负载词由于其涵盖的大量民族特色词汇,成为翻译过程中的挑战,同时也是文化传播的重要工具。文章基于目的论视角,以纪录片Seasons of China中的中文文化负载词英译为例,探讨译者在翻译过程中采取的恰当翻译方法,以期为纪录片的文化负载词翻译研究提供一定的借鉴与参考。
文摘On December 26th,2017,the meeting on the selection of the 2017 top ten news of China’s paper industry,sponsored by China Paper Newsletters,was held in China National Pulp and Paper Research Institute Co.,Ltd.,Beijing.The yearly selection of the top ten news,which began in 2000,has become a brand activity within the industry and is widely accepted and greatly appreciated throughout due to the care and support from leaders at all levels and industry colleagues as well as the attention of warm hearted reading public.
文摘I.Production and Consumption of Paper&Board 1.The General Situation of 2019 According to the survey made by China Paper Association(CPA),in 2019,there were about 2,700 paper&board manufacturers in China's Mainland.The total production of paper&board was 107.65 million tons,increased by 3.16%and the total consumption was 107.04 million tons,increased by 2.54%compared with the previous year respectively.
基金This work was supported by the National Natural Science Foundation of China(Grant No.32201547).
文摘Quantifying the biomass of saplings in the regeneration component is critical for understanding biogeochemical processes of forest ecosystems.However,accurate allometric equations have yet to be developed in sufficient detail.To develop species-specific and generalized allometric equations,154 saplings of eight Fagaceae tree species in subtropical China’s evergreen broadleaved forests were collected.Three dendrometric variables,root collar diameter(d),height(h),and crown area(ca)were applied in the model by the weighted nonlinear seemingly unrelated regression method.Using only d as an input variable,the species-specific and generalized allometric equations estimated the aboveground biomass reasonably,with R _(adj)^(2) values generally>0.85.Adding h and/or ca improved the fitting of some biomass components to a certain extent.Generalized equations showed a relatively large coefficient of variation but comparable bias to species-specific equations.Only in the absence of species-specific equations at a given location are generalized equations for mixed species recommended.The developed regression equations can be used to accurately calculate the aboveground biomass of understory Fagaceae regeneration trees in China’s subtropical evergreen broadleaved forests.
文摘2017 was a year of rejoicing for the China’s paper industry!During the year,most paper companies in China sang all the way,and whose profits boosted by the sharp rise in paper prices.According to the statistics released by the National Bureau of Statistics,in 2017,there were 2,754 paper and board producers whose scales were above the statistical threshold,the total pre-tax profits of which was RMB 66.6 billion,increased by 55.63%compared with 2016.
文摘According to the survey made by China Paper Association(CPA),in 2017,there were about 2,800 paper&board manufacturers in China's Mainland.The total production and consumption of paper&board were 111.30 million tons and 108.97 million tons,increased by 2.53%and 4.59%compared with the previous year respectively;paper&board per capita consumption was 78 kg.From 2008 to 2017,the average annual growth rate of paper&board production was 3.77%,and the average annual growth rate of paper&board consumption was 3.59%.As shown in Fig.1 and Table 1.
文摘In order to implement the Environmental Protection Law of the People’s Republic of China and improve the quality of the environment,to implement the Notice of the General Office of the State Council on Issuing the Implementation Plan for the Control of Pollutant Discharge Permit System(the General Office of the State Council issued[2016]No.81),to establish a sound available technology system in pollutant discharge standard basis and to promote the upgrading and reforming of pollution prevention measures and technological progress in enterprises and institutions,on January 5th,2018,the Ministry of Environmental Protection issued the National Environmental Protection Standard Available Technology Guide for Pollution Prevention and Control of the Pulp and Paper Industry(HJ 2302—2018).
文摘In order to further standardize the management of environmental impact assessment,in accordance with relevant regulations of the Law of the People’s Republic of China on Environmental Impact Assessment and the Regulations on the Administration of Environmental Protection of Construction Projects,according to the requirements of Notice on Issuing Major Changes list in Construction Projects for Certain Industries in Environmental Impact Assessment Management,combining environmental impact characteristics of different industries,the Ministry of Environmental Protection has formulated a list of major changes in construction projects for 14 industries including pulp and papermaking(trial)and released it on February 9th,2018.
文摘This study aims to analysis the influence of economic growth(EG)and energy consumption(EC)on sulfur dioxide emissions(SE)in China.Accordingly,this study explores the link between EG,EC,and SE for 30 provinces in China over the span of 2000-2019.This study also analyzes cross-sectional dependence tests,panel unit root tests,Westerlund panel cointegration tests,Dumitrescu-Hurlin(D-H)causality tests.According to the test results,there is an inverted U-shaped association between EG and SE,and the assumption of the Environmental Kuznets Curve(EKC)is verified.The signs of EG and EC in the fixed effect(FE)and random effect(RE)methods are in line with those in the dynamic ordinary least squares(DOLS),fully modified ordinary least squares(FMOLS)and autoregressive distributed lag(ARDL)estimators.Moreover,the results verified that EC can obviously positive impact the SE.To reduce SE in China,government and policymakers can improve air quality by developing cleaner energy sources and improving energy efficiency.This requires the comprehensive use of policies,regulations,economic incentives,and public participation to promote sustainable development.
