In recent years, semiconductor survey meters have been developed and are in increasing demand worldwide. This study determined if it is possible to use the X-ray system installed in each medical facility to calculate ...In recent years, semiconductor survey meters have been developed and are in increasing demand worldwide. This study determined if it is possible to use the X-ray system installed in each medical facility to calculate the time constant of a semiconductor survey meter and confirm the meter’s function. An additional filter was attached to the medical X-ray system to satisfy the standards of N-60 to N-120, more copper plates were added as needed, and the first and second half-value layers were calculated to enable comparisons of the facility’s X-ray system quality with the N-60 to N-120 quality values. Next, we used a medical X-ray system to measure the leakage dose and calculate the time constant of the survey meter. The functionality of the meter was then checked and compared with the energy characteristics of the meter. The experimental results showed that it was possible to use a medical X-ray system to reproduce the N-60 to N-120 radiation quality values and to calculate the time constant from the measured results, assuming actual leakage dosimetry for that radiation quality. We also found that the calibration factor was equivalent to that of the energy characteristics of the survey meter.展开更多
The affirmation registration and certification of land contracted management right are the essential conditions for the effective promotion of land management right circulation and the development of agricultural mode...The affirmation registration and certification of land contracted management right are the essential conditions for the effective promotion of land management right circulation and the development of agricultural moderate scale management. However, the following problems are found in the process of the pilot work: insufficient propaganda work, inconsistent recognition of affirmation registration work, low enthusiasm of grass-roots work; lack of unified regulations, each company working on their own; requiring large amount of manpower and resources for rural land contracted management rights, and severe shortage of national and municipal inputs; incomplete land ownership information and lack of marks between land plots, leading to resolving difficulty of the disputes; urgent need of strengthening subsequent work, untimely adjustment of related policies. Therefore, it needs to intensify propaganda, so that farmers can know the land right confirmation registration and certifi- cation, and recognize its importance; unify the introduction of job specification and results storage standard, making it convenient for the unified use of the results unified; set up special funds, and make experiments first in the areas with better economic conditions; establish arbitral institutions for land ownership disputes; earnestly make great effort to the supporting and subsequent work for right confirmation registration, and give full play to the role of land registration results.展开更多
Rural collective land ownership registration is a basic work to safeguard farmers' land rights and interests, and promote rural reform and development, which involves the vital interests of the peasants, and has grea...Rural collective land ownership registration is a basic work to safeguard farmers' land rights and interests, and promote rural reform and development, which involves the vital interests of the peasants, and has great influence on the rural economic and social development. However, there are many problems in rural col- lective land ownership registration and certification, such as unclear rural land own- ership subject and nature; not unified understanding of registration, no high enthusi- asm of the grass-roots work; prominent registration policy contradictions, serious shortage of investment, which seriously affect the rural land ownership registration work. In order to solve these problems, some suggestions are put forward on pro- moting the rural land ownership registration work smoothly.展开更多
There is a large Mesoproterozoic rift at the northern margin of North China Craton (NCC), and one of China's most important metallogenic belts, the Langshan-Zhaertai Shan-Bayan Obo mesoproterozoic metallogenic belt...There is a large Mesoproterozoic rift at the northern margin of North China Craton (NCC), and one of China's most important metallogenic belts, the Langshan-Zhaertai Shan-Bayan Obo mesoproterozoic metallogenic belt is just located in this rift. This metallogenic belt contains some large or ultra-large ore deposits, such as the Bayan Obo iron deposits and ultra-large rare earth deposits, and the large Dongshengmiao Cu-Pb-Zn sulphide deposits.展开更多
A fast and sensitive method for determination of 8 diuretics (acetazolamide, bendroflumethiazide, bumetanide, chlorthalidone, furosemide, hydrochlorothiazide, metolazone, triamterene) and masking agent (probenecid) in...A fast and sensitive method for determination of 8 diuretics (acetazolamide, bendroflumethiazide, bumetanide, chlorthalidone, furosemide, hydrochlorothiazide, metolazone, triamterene) and masking agent (probenecid) in human urine using gas-chromatography with mass spectrometric detection is described. The extraction of the substances as function of the nature of organic solvent, mixing time and pH of aqueous phase was studied. The tandem mass spectrometry was used to increase selectivity of diuretics determination due to elimination of background interferences. Fragmentation reactions were studied for each compound and their collision energies were optimized to obtain the best selectivity. The results of method’s validation demonstrate its suitability in routine analysis for confirmation purposes.展开更多
After analyzing the reasons for coal mine accidents and the current management methods, effective actions for the implementation of safety management were put forward by carrying out the whole process confirmation man...After analyzing the reasons for coal mine accidents and the current management methods, effective actions for the implementation of safety management were put forward by carrying out the whole process confirmation management. The ba- sic content and the five implementation steps were described, and the implementation method and the program of every step were introduced. Some rules for the implementation of the whole process confirmation management in coal mine safety pro- duction were explained, such as during the process of preproduction, before descent, descent, after descent, walking in the roadway, post-operation, shift, and hoisting after work. The results show that the guardians and the executors should both con- firm the implementation, which can improve the workers' attention and self-awareness to avoid errors in detail and reduce the "three violations" phenomenon. To ensure the effect of the whole process confirmation management, relevant departments should designate a person-in-charge in the specific work in all stages, make a work plan, and strengthen the internal evaluation.展开更多
Objective:To investigate the infection of Fasciola gigantka(F.gigantka)in domestic cattle from Chiang Mai province and molecular confirmation using ITS-2 region.Methods:The liver and gall bladder of Bubalus bubalis(B....Objective:To investigate the infection of Fasciola gigantka(F.gigantka)in domestic cattle from Chiang Mai province and molecular confirmation using ITS-2 region.Methods:The liver and gall bladder of Bubalus bubalis(B.bubalis)and Bos taurus(B.taunts)from slaughterhouses were examined adult worms and prevalence investigation.The species confirmation with phylogenetic analysis using ITS-2 sequences was performed by maximum likelihood and UPGMA methods.Results:The total prevalences of infection in B.bubalis and Bubalus taurus(B.taurus)were67.27%and 52.94%respectively.The respective prevalence in both B.bubalis and B.taurus were acquired from Doi-Saket,Muang,and Sanpatong districts,with 81.25%,62.50%and 60.00%for B.bubalis and 62.50%,50.00%and 47.06%for Bos taunts respectively.The species confirmation of F.gigantka and some related species by basing on maximum likelihood and UPGMA methods used,4 groups of trematodes were generated,first F.gigantka group including specimen of Chiang Mai,second 2 samples of F.hepatica,third group of 3 rumen flukes;Orthocoelium streptocoelium,F.elongatus and Paramphistomum epliclitum and fourth group of 3 minute intestinal flukes:Haplorchis taichui,Stellantchasmu falcatus.Haplorchoides sp.and liver fluke;Opisthorchis civerrini respectively.Conclusions:These results can be confirmed the Giant liver fluke which mainly caused fascioliasis in Chiang Mai was identified as F.gigantka and specimens were the same as those of F.gigantka recorded in olher different countries.Nucleotide sequence of ITS-2 region has been proven as effective diagnostic tool for the identification of F.gigantka.展开更多
This paper reports a new reverse butterfly-shaped chaotic attractor and its experimental confirmation. Some basic dynamical properties, and chaotic behaviours of this new reverse butterfly attractor are studied. Simul...This paper reports a new reverse butterfly-shaped chaotic attractor and its experimental confirmation. Some basic dynamical properties, and chaotic behaviours of this new reverse butterfly attractor are studied. Simulation results support brief theoretical derivations, Furthermore, the system is experimentally confirmed by a simple electronic circuit.展开更多
Confirmation of homestead right is helpful for planning of rural construction land and comprehensive development of new socialist countryside construction. At present,China is carrying out confirmation of rural homest...Confirmation of homestead right is helpful for planning of rural construction land and comprehensive development of new socialist countryside construction. At present,China is carrying out confirmation of rural homestead right on a large scale. Theoretical analysis on construction of database for confirmation of rural homestead right is of great significance for promoting confirmation of rural homestead right. Using the Mapgis urban cadastral management system database,this paper studied the process of creating database for conformation of rural homestead right,and came up with recommendations for update and maintenance of the database.展开更多
Land,the foundation of agriculture and farmers,is the most basic capital goods of agricultural production. Confirmation of land right in rural areas not only effectively protects the land contract management right of ...Land,the foundation of agriculture and farmers,is the most basic capital goods of agricultural production. Confirmation of land right in rural areas not only effectively protects the land contract management right of peasants and helps to realize the informatization management of land contract,but also lays a foundation for land circulation and scale management. In addition,it also promotes the realization of agricultural modernization. This paper analyzes the problems in the confirmation of land right and sets forth recommendations under the premise of realizing the importance of confirmation of land right.展开更多
This paper reviews and adds to previous arguments for the thesis that Karl Popper was mistaken to have rejected hypothetico-deductive confirmation. By turning from the positive idea of verification to the negative ide...This paper reviews and adds to previous arguments for the thesis that Karl Popper was mistaken to have rejected hypothetico-deductive confirmation. By turning from the positive idea of verification to the negative idea of criticism, Popper believed that he had turned his back on induction. He believed he had "solved" the "problem of induction" by providing a non-inductive account of corroboration. Popper used the term "corroboration" rather than confirmation which he believed was too closely allied to the notion of the inductive or probabilistic support that a theory can receive from evidence. Wesley Salmon's (1967) "concept of confirming evidence" and Clark Glymour's (1980) "bootstrap conception of evidence for theory" both defended respectively the thesis that passed tests can be confirmed by evidence or warranted by the degree of probability. Using a sequence of symbols in logical form or analysis, I shall further defend the concept to hypothetico-deductive confirmation in order to show that the known weaknesses of Popper's critical rationalism are remediable, once the notion of evidence for theories is brought back into consideration.展开更多
The cornerstone of scientifically valid and ethically sound clinical trials is in compliance with established global quality requirements.Although China has made significant progress over the past 20 years in terms of...The cornerstone of scientifically valid and ethically sound clinical trials is in compliance with established global quality requirements.Although China has made significant progress over the past 20 years in terms of the clinical trial quantity[1],quality and participation in multiregional trials[2],there still remain concerns regarding the trial quality,which could be associated with the self-inspection initiative in 2015[3].展开更多
To the Editor:Identifying the pathogen from clinical samples is crucial for the diagnosis of a newly emergent infectious disease,such as 2019 novel coronavirus(2019-nCoV).which has posed great threats to global public...To the Editor:Identifying the pathogen from clinical samples is crucial for the diagnosis of a newly emergent infectious disease,such as 2019 novel coronavirus(2019-nCoV).which has posed great threats to global public health.[1]In some cases,despite the positive epidemiological,clinical,and radiographic evidence,coronavirus disease 2019(COVID-19)diagnosis can still be restricted by inconclusive polymerase chain reaction(PCR)results.[2]For samples of suspicious patients,where the fluorescence quantitative PCR(FQ-PCR)results in a few respiratory tract specimens were inconclusive,high-throughput sequencing(HTS)can be an effective confirmation method.Here,we report our experience of applying HTS to confirm a suspected 2019-nCoV infection.展开更多
A large foreign project, one of the world's largest LNG plant construction projects, 36 core process modules in construction with a total weight of 200,000 tons approximately, project duration started from July 20...A large foreign project, one of the world's largest LNG plant construction projects, 36 core process modules in construction with a total weight of 200,000 tons approximately, project duration started from July 2014 and will be completed in July 2017. The variation and workload confirmation transmission management system is established and implemented with exploration and innovation in this project, the author elaborated variation and workload confirmation transmission system by extraction of optimized cases in order to provide a practical reference for variation and workload confirmation management work in oil and gas module construction projects.展开更多
We have read the article entitled "Galen’s place in Avicenna’s The Canon of Medicine: Respect, confirmation and criticism."(online available: 15 November 2019) [1]. We want to congratulate the authors for ...We have read the article entitled "Galen’s place in Avicenna’s The Canon of Medicine: Respect, confirmation and criticism."(online available: 15 November 2019) [1]. We want to congratulate the authors for this successful review article and make some contributions.The article explains that Avicenna mentioned Galen in his famous medical book—The Cannon of Medicine, in detail.展开更多
Giving farmers more rights and interests on land property is the basis of achieving balanced and coordinated economic development between urban and rural areas as well as building a sharing economy during the period o...Giving farmers more rights and interests on land property is the basis of achieving balanced and coordinated economic development between urban and rural areas as well as building a sharing economy during the period of economic transition in China.Based on the survey data of suburban households of Tianjin,in this paper,measurement method was adopted to study factors influencing farmer s willingness on land management right mortgage.The results shows that the willingness of individual farmer on mortgage is not strong,however,their willingness on mortgage is bound to have a significant relationship with farmland right confirmation and land transfer and other factors.Finally,it is concluded that it is necessary to promote land transfer on the basis of land right of confirmation while carrying out farmland mortgage under the premise of large-scale operation in China.展开更多
The limitations of biomedecine to provide effective solutions to certain pandemics has led many people to turn to alternative therapies. These palliative solutions, particularly phytomedecines, are much sought after f...The limitations of biomedecine to provide effective solutions to certain pandemics has led many people to turn to alternative therapies. These palliative solutions, particularly phytomedecines, are much sought after for disease prevention and treatment. The Baka, a group of forest-dwelling people, hold knowledge on how wild plants can be effective in treating many illnesses. However, the greatest challenge for the identification of traditional medicines depends on the veracity of the information provided during ethnobotanic surveys by user populations. The present study describes forest plants used by the Baka and confirmed by them as being employed for traditional medicine. We carried out ethnobotanical surveys between 2019 and 2021 in 221 households within four districts of the Eastern and Southern Region of Cameroon. We used indices of significant use and performance applied to all mentioned species, alongside searches in the literature. The statistical tools used to distinguish the different groups/districts is Pearson’s X2 test. A total of 378 plant species were identified of 270 genera and 85 families. Ethnobotanical indices allowed to identify the most confirmed and efficient plants for several health problems. A pairwise comparison of these indices showed a significant correlation with a p-value < 2.2e-16 and a dissimilarity distance less than 0.5. Some plants selected are widely cited in other regions and/or countries for the same health problems. The presence of active molecules responsible for their biological activity was also proven, justifying their use in traditional medicine. This paper examines the potential to enhance the value of Cameroon’s pharmacopeia by integrating various ethnobotanical indices. It aims to discover new therapeutic molecules and develop improved traditional products from the diverse plant species documented. The findings indicate opportunities to advance both local and global healthcare solutions.展开更多
This study was done to determine the causal organism of the pear blossom and bud blast in China. It was identified by a bacteriological test, electro-microscopic observation, Koch's postulate test, Biolog, fatty acid...This study was done to determine the causal organism of the pear blossom and bud blast in China. It was identified by a bacteriological test, electro-microscopic observation, Koch's postulate test, Biolog, fatty acid methyl esters (FAMEs), and a polymerase chain reaction (PCR) test, and compared with the standard reference strains. Six representative strains out of 20 pathogenic bacterial isolates from 16 diseased samples showed characteristics similar to three standard strains of Pseudomonas syringae pv. syringae from Belgium. They were identified as P. syringae pv. syringae with a Biolog similarity of 0.57-0.86 and FAMEs similarity of 0.58-0.81. The bacterium was reisolated from the symptomatic plants and blossoms. Identification as P. syringae pv. syringae was confirmed by using PCR primers and sequence tests, and compared with the above-mentioned results. The data supported the fact that the pear blossom and bud blast in China could be caused by P. syringae pv. syringae.展开更多
The quantum field theory based on the hypothesis of the absolute reference system is a classical non-relativistic theory, which is compatible with current quantum theory. This conclusion arises when one compares the t...The quantum field theory based on the hypothesis of the absolute reference system is a classical non-relativistic theory, which is compatible with current quantum theory. This conclusion arises when one compares the theoretical results of quantum electrodynamics using the basic principles of this hypothesis. Wave equation, which replaces this of Schrodinger, is the classical wave equation of a peculiar electromagnetic wave, derived from the study of particle structure.展开更多
文摘In recent years, semiconductor survey meters have been developed and are in increasing demand worldwide. This study determined if it is possible to use the X-ray system installed in each medical facility to calculate the time constant of a semiconductor survey meter and confirm the meter’s function. An additional filter was attached to the medical X-ray system to satisfy the standards of N-60 to N-120, more copper plates were added as needed, and the first and second half-value layers were calculated to enable comparisons of the facility’s X-ray system quality with the N-60 to N-120 quality values. Next, we used a medical X-ray system to measure the leakage dose and calculate the time constant of the survey meter. The functionality of the meter was then checked and compared with the energy characteristics of the meter. The experimental results showed that it was possible to use a medical X-ray system to reproduce the N-60 to N-120 radiation quality values and to calculate the time constant from the measured results, assuming actual leakage dosimetry for that radiation quality. We also found that the calibration factor was equivalent to that of the energy characteristics of the survey meter.
文摘The affirmation registration and certification of land contracted management right are the essential conditions for the effective promotion of land management right circulation and the development of agricultural moderate scale management. However, the following problems are found in the process of the pilot work: insufficient propaganda work, inconsistent recognition of affirmation registration work, low enthusiasm of grass-roots work; lack of unified regulations, each company working on their own; requiring large amount of manpower and resources for rural land contracted management rights, and severe shortage of national and municipal inputs; incomplete land ownership information and lack of marks between land plots, leading to resolving difficulty of the disputes; urgent need of strengthening subsequent work, untimely adjustment of related policies. Therefore, it needs to intensify propaganda, so that farmers can know the land right confirmation registration and certifi- cation, and recognize its importance; unify the introduction of job specification and results storage standard, making it convenient for the unified use of the results unified; set up special funds, and make experiments first in the areas with better economic conditions; establish arbitral institutions for land ownership disputes; earnestly make great effort to the supporting and subsequent work for right confirmation registration, and give full play to the role of land registration results.
文摘Rural collective land ownership registration is a basic work to safeguard farmers' land rights and interests, and promote rural reform and development, which involves the vital interests of the peasants, and has great influence on the rural economic and social development. However, there are many problems in rural col- lective land ownership registration and certification, such as unclear rural land own- ership subject and nature; not unified understanding of registration, no high enthusi- asm of the grass-roots work; prominent registration policy contradictions, serious shortage of investment, which seriously affect the rural land ownership registration work. In order to solve these problems, some suggestions are put forward on pro- moting the rural land ownership registration work smoothly.
基金the project of "Properties and Metallogenic Specialization of Meso-Neopreterozoic Multiphases Rift in NCC",funded by the National Basic Research Program of China(grant No.2012CB416604)
文摘There is a large Mesoproterozoic rift at the northern margin of North China Craton (NCC), and one of China's most important metallogenic belts, the Langshan-Zhaertai Shan-Bayan Obo mesoproterozoic metallogenic belt is just located in this rift. This metallogenic belt contains some large or ultra-large ore deposits, such as the Bayan Obo iron deposits and ultra-large rare earth deposits, and the large Dongshengmiao Cu-Pb-Zn sulphide deposits.
文摘A fast and sensitive method for determination of 8 diuretics (acetazolamide, bendroflumethiazide, bumetanide, chlorthalidone, furosemide, hydrochlorothiazide, metolazone, triamterene) and masking agent (probenecid) in human urine using gas-chromatography with mass spectrometric detection is described. The extraction of the substances as function of the nature of organic solvent, mixing time and pH of aqueous phase was studied. The tandem mass spectrometry was used to increase selectivity of diuretics determination due to elimination of background interferences. Fragmentation reactions were studied for each compound and their collision energies were optimized to obtain the best selectivity. The results of method’s validation demonstrate its suitability in routine analysis for confirmation purposes.
基金Supported by the Coal Union Fund of the National Nature Science Foundation of China (51174272) the Technology Innovation Fund of China Coal Science and Engineering Group (2012MS001)
文摘After analyzing the reasons for coal mine accidents and the current management methods, effective actions for the implementation of safety management were put forward by carrying out the whole process confirmation management. The ba- sic content and the five implementation steps were described, and the implementation method and the program of every step were introduced. Some rules for the implementation of the whole process confirmation management in coal mine safety pro- duction were explained, such as during the process of preproduction, before descent, descent, after descent, walking in the roadway, post-operation, shift, and hoisting after work. The results show that the guardians and the executors should both con- firm the implementation, which can improve the workers' attention and self-awareness to avoid errors in detail and reduce the "three violations" phenomenon. To ensure the effect of the whole process confirmation management, relevant departments should designate a person-in-charge in the specific work in all stages, make a work plan, and strengthen the internal evaluation.
文摘Objective:To investigate the infection of Fasciola gigantka(F.gigantka)in domestic cattle from Chiang Mai province and molecular confirmation using ITS-2 region.Methods:The liver and gall bladder of Bubalus bubalis(B.bubalis)and Bos taurus(B.taunts)from slaughterhouses were examined adult worms and prevalence investigation.The species confirmation with phylogenetic analysis using ITS-2 sequences was performed by maximum likelihood and UPGMA methods.Results:The total prevalences of infection in B.bubalis and Bubalus taurus(B.taurus)were67.27%and 52.94%respectively.The respective prevalence in both B.bubalis and B.taurus were acquired from Doi-Saket,Muang,and Sanpatong districts,with 81.25%,62.50%and 60.00%for B.bubalis and 62.50%,50.00%and 47.06%for Bos taunts respectively.The species confirmation of F.gigantka and some related species by basing on maximum likelihood and UPGMA methods used,4 groups of trematodes were generated,first F.gigantka group including specimen of Chiang Mai,second 2 samples of F.hepatica,third group of 3 rumen flukes;Orthocoelium streptocoelium,F.elongatus and Paramphistomum epliclitum and fourth group of 3 minute intestinal flukes:Haplorchis taichui,Stellantchasmu falcatus.Haplorchoides sp.and liver fluke;Opisthorchis civerrini respectively.Conclusions:These results can be confirmed the Giant liver fluke which mainly caused fascioliasis in Chiang Mai was identified as F.gigantka and specimens were the same as those of F.gigantka recorded in olher different countries.Nucleotide sequence of ITS-2 region has been proven as effective diagnostic tool for the identification of F.gigantka.
文摘This paper reports a new reverse butterfly-shaped chaotic attractor and its experimental confirmation. Some basic dynamical properties, and chaotic behaviours of this new reverse butterfly attractor are studied. Simulation results support brief theoretical derivations, Furthermore, the system is experimentally confirmed by a simple electronic circuit.
基金Supported by Soft Science Project of Anhui Provincial Department of Land and Natural Resources"Study on Revision of Overall Land Use Plan from the Perspective of New Urbanization"(801[2015]of the Ministry of Finance)
文摘Confirmation of homestead right is helpful for planning of rural construction land and comprehensive development of new socialist countryside construction. At present,China is carrying out confirmation of rural homestead right on a large scale. Theoretical analysis on construction of database for confirmation of rural homestead right is of great significance for promoting confirmation of rural homestead right. Using the Mapgis urban cadastral management system database,this paper studied the process of creating database for conformation of rural homestead right,and came up with recommendations for update and maintenance of the database.
文摘Land,the foundation of agriculture and farmers,is the most basic capital goods of agricultural production. Confirmation of land right in rural areas not only effectively protects the land contract management right of peasants and helps to realize the informatization management of land contract,but also lays a foundation for land circulation and scale management. In addition,it also promotes the realization of agricultural modernization. This paper analyzes the problems in the confirmation of land right and sets forth recommendations under the premise of realizing the importance of confirmation of land right.
文摘This paper reviews and adds to previous arguments for the thesis that Karl Popper was mistaken to have rejected hypothetico-deductive confirmation. By turning from the positive idea of verification to the negative idea of criticism, Popper believed that he had turned his back on induction. He believed he had "solved" the "problem of induction" by providing a non-inductive account of corroboration. Popper used the term "corroboration" rather than confirmation which he believed was too closely allied to the notion of the inductive or probabilistic support that a theory can receive from evidence. Wesley Salmon's (1967) "concept of confirming evidence" and Clark Glymour's (1980) "bootstrap conception of evidence for theory" both defended respectively the thesis that passed tests can be confirmed by evidence or warranted by the degree of probability. Using a sequence of symbols in logical form or analysis, I shall further defend the concept to hypothetico-deductive confirmation in order to show that the known weaknesses of Popper's critical rationalism are remediable, once the notion of evidence for theories is brought back into consideration.
基金Chinese Academy of Medical Sciences Innovation Fund for Medical Sciences,Grant/Award Number:2021-I2M-1-045National Anti-Tumor Drug Surveillance System of National Cancer Center,Grant/Award Number:DSS-YSF-2023009National Key Research and Development Program of China,Grant/Award Number:2021YFE0192400。
文摘The cornerstone of scientifically valid and ethically sound clinical trials is in compliance with established global quality requirements.Although China has made significant progress over the past 20 years in terms of the clinical trial quantity[1],quality and participation in multiregional trials[2],there still remain concerns regarding the trial quality,which could be associated with the self-inspection initiative in 2015[3].
基金This work was supported by grants from the National Key Research and Development Program of China(Nos.2018YFC1200100 and 2018YFC1311900)science research project of the Guangdong Province(No.2019B030316028)Guangzhou Medical University High-level University Clinical Research and Cultivation Program(Nos.[2017]159 and 160).
文摘To the Editor:Identifying the pathogen from clinical samples is crucial for the diagnosis of a newly emergent infectious disease,such as 2019 novel coronavirus(2019-nCoV).which has posed great threats to global public health.[1]In some cases,despite the positive epidemiological,clinical,and radiographic evidence,coronavirus disease 2019(COVID-19)diagnosis can still be restricted by inconclusive polymerase chain reaction(PCR)results.[2]For samples of suspicious patients,where the fluorescence quantitative PCR(FQ-PCR)results in a few respiratory tract specimens were inconclusive,high-throughput sequencing(HTS)can be an effective confirmation method.Here,we report our experience of applying HTS to confirm a suspected 2019-nCoV infection.
文摘A large foreign project, one of the world's largest LNG plant construction projects, 36 core process modules in construction with a total weight of 200,000 tons approximately, project duration started from July 2014 and will be completed in July 2017. The variation and workload confirmation transmission management system is established and implemented with exploration and innovation in this project, the author elaborated variation and workload confirmation transmission system by extraction of optimized cases in order to provide a practical reference for variation and workload confirmation management work in oil and gas module construction projects.
文摘We have read the article entitled "Galen’s place in Avicenna’s The Canon of Medicine: Respect, confirmation and criticism."(online available: 15 November 2019) [1]. We want to congratulate the authors for this successful review article and make some contributions.The article explains that Avicenna mentioned Galen in his famous medical book—The Cannon of Medicine, in detail.
基金Supported by Major Humanities and Social Sciences Project of Tianjin Municipal Education Commission(2020JWZD24).
文摘Giving farmers more rights and interests on land property is the basis of achieving balanced and coordinated economic development between urban and rural areas as well as building a sharing economy during the period of economic transition in China.Based on the survey data of suburban households of Tianjin,in this paper,measurement method was adopted to study factors influencing farmer s willingness on land management right mortgage.The results shows that the willingness of individual farmer on mortgage is not strong,however,their willingness on mortgage is bound to have a significant relationship with farmland right confirmation and land transfer and other factors.Finally,it is concluded that it is necessary to promote land transfer on the basis of land right of confirmation while carrying out farmland mortgage under the premise of large-scale operation in China.
文摘The limitations of biomedecine to provide effective solutions to certain pandemics has led many people to turn to alternative therapies. These palliative solutions, particularly phytomedecines, are much sought after for disease prevention and treatment. The Baka, a group of forest-dwelling people, hold knowledge on how wild plants can be effective in treating many illnesses. However, the greatest challenge for the identification of traditional medicines depends on the veracity of the information provided during ethnobotanic surveys by user populations. The present study describes forest plants used by the Baka and confirmed by them as being employed for traditional medicine. We carried out ethnobotanical surveys between 2019 and 2021 in 221 households within four districts of the Eastern and Southern Region of Cameroon. We used indices of significant use and performance applied to all mentioned species, alongside searches in the literature. The statistical tools used to distinguish the different groups/districts is Pearson’s X2 test. A total of 378 plant species were identified of 270 genera and 85 families. Ethnobotanical indices allowed to identify the most confirmed and efficient plants for several health problems. A pairwise comparison of these indices showed a significant correlation with a p-value < 2.2e-16 and a dissimilarity distance less than 0.5. Some plants selected are widely cited in other regions and/or countries for the same health problems. The presence of active molecules responsible for their biological activity was also proven, justifying their use in traditional medicine. This paper examines the potential to enhance the value of Cameroon’s pharmacopeia by integrating various ethnobotanical indices. It aims to discover new therapeutic molecules and develop improved traditional products from the diverse plant species documented. The findings indicate opportunities to advance both local and global healthcare solutions.
基金the National High Technology Research and Development Program of China (2006AA10A211)National Natural Science Foundation of China (30671397)Hangzhou Agricultural Development Foundation,China (2007-2008)
文摘This study was done to determine the causal organism of the pear blossom and bud blast in China. It was identified by a bacteriological test, electro-microscopic observation, Koch's postulate test, Biolog, fatty acid methyl esters (FAMEs), and a polymerase chain reaction (PCR) test, and compared with the standard reference strains. Six representative strains out of 20 pathogenic bacterial isolates from 16 diseased samples showed characteristics similar to three standard strains of Pseudomonas syringae pv. syringae from Belgium. They were identified as P. syringae pv. syringae with a Biolog similarity of 0.57-0.86 and FAMEs similarity of 0.58-0.81. The bacterium was reisolated from the symptomatic plants and blossoms. Identification as P. syringae pv. syringae was confirmed by using PCR primers and sequence tests, and compared with the above-mentioned results. The data supported the fact that the pear blossom and bud blast in China could be caused by P. syringae pv. syringae.
文摘The quantum field theory based on the hypothesis of the absolute reference system is a classical non-relativistic theory, which is compatible with current quantum theory. This conclusion arises when one compares the theoretical results of quantum electrodynamics using the basic principles of this hypothesis. Wave equation, which replaces this of Schrodinger, is the classical wave equation of a peculiar electromagnetic wave, derived from the study of particle structure.