The main goal of this research is to investigate the effect of copper on compressive strength of dental amalgam. For this purpose amalgam capsules with two different content of copper were used. Cylindrical samples wi...The main goal of this research is to investigate the effect of copper on compressive strength of dental amalgam. For this purpose amalgam capsules with two different content of copper were used. Cylindrical samples with diameter to height ratio 1 to 2, were prepared via molding method. To evaluate the role of copper element on compressive strength, com-pression test was done at different strain rates i.e. 0.02, 0.2, 0.4 and 2 min–1. The results and microscopic evaluations showed that an increase in copper content in amalgam caused to eliminate gamma2 phase and leaded to promote compressive strength.展开更多
Objective: We describe patients with MCS, the evolution of the Quick Environmental Exposure and Sensitivity Inventory (QEESI) score with a special focus on people whose fillings were removed. Methods: We have conducte...Objective: We describe patients with MCS, the evolution of the Quick Environmental Exposure and Sensitivity Inventory (QEESI) score with a special focus on people whose fillings were removed. Methods: We have conducted a retrospective longitudinal cohort study in patients diagnosed with MCS and attended in the outpatient Internal Medicine department of the University Hospital of San Juan de Alicante, from January 1, 2008 to January 1, 2021. Sociodemographic, clinical, QEESI and treatment-related variables were collected. We performed descriptive and inferential analyses. Mixed linear models were used to analyze the QEESI. Calculations were carried out with an α error of 5%. Results: Thirty-three patients were included (72.7% women, mean age 56.2). MCS was mainly triggered by mercury (N = 20) and food intolerance (N = 22). The mean interval from symptoms onset was 120 months (SD 81.6). 114 QEESIs were analyzed: 82 (N = 17 without amalgams) and 32 (N = 16 with amalgams). In patients without amalgams, severity scores increased across all subscales except the masking index (vs. with amalgams). Mean scores for the group without amalgams (vs. with amalgams) were: chemical intolerance, 62.8 points (vs. 63.4 and 46.7);other intolerances, 52.7 points (vs. 62.8 and 50.3);symptom severity, 63.2 (vs. 76.7 and 63.3);masking index, 3.9 (vs. 3.2 and 2.8);and life impacts, 63.1 (vs. 58.4 and 49.8). Conclusion: The profile of patient with MCS is a middle-aged woman who is a frequent user of healthcare services, presents a long diagnostic delay and has borne a great personal, work and socioeconomic impact. The QEESI is useful for the clinical follow-up of patients, including the optimal treatment response in the case of amalgams. Clinical Significance: People affected by Multiple Chemical Sensitivity deserve the attention, understanding and help of health professionals and family members, to face an invisible illness for those who do not suffer from it. Support is needed and doctors must raise awareness, and make an effort to understand and address this pathology. We suggest that protocolized amalgam extraction in accredited and prepared centers can reduce symptoms and improve quality of life, generating clinical, personal, family, occupational, social and occupational benefits.展开更多
A total of 393 potholes(368 fluvial and 25 marine potholes)were studied at seven different sites in both the fluvial and marine environments.Diverse bedrock properties and large-scale delivery of tools and grinders re...A total of 393 potholes(368 fluvial and 25 marine potholes)were studied at seven different sites in both the fluvial and marine environments.Diverse bedrock properties and large-scale delivery of tools and grinders regulate the dynamic growth,truncation,and amalgamation of potholes.Therefore,the principal objectives of the study are(i)to examine the relationship between the growth of potholes and substrate lithological with structural characteristics(applying geospatial and Schmidt hammer for rock strength analysis)and(ii)to measure the morphology,and size of tools and grinders,processes of truncation and amalgamation in hydro-geomorphic environment using various indices and field techniques.The result showed that large potholes are stretched in the direction of lineament axes and roughly parallel to the river flow direction.Here,the steady growth of pothole depth-diameter is controlled by active bedrock structures,tools,or grinders,and monsoonal high-velocity bank full discharge.Consequently,the deepening and widening of potholes are relatively slow at Bindu,Deuli,and marine beach Neil Island due to fewer structures and little supply of tools or grinders.In small stretches,(Damodar,Subarnarekha,and Rarhu)canyons and gorge-like features(bedrock incision)are formed at Rajrappa,Bhakuyadi,and Guridih sites due to cyclic truncation and amalgamation.Truncation and amalgamation processes restrict the vertical depth threshold value of potholes within 3m,particularly at Rajrappa,Bhakuyadi,and Guridih sites.Scientific study of the pothole's dynamic growth is greatly necessary for the different environmental engineering and river hydraulic projects like excavation,dredging,and dam or barrage construction.Successively,it is essential to compute the cost of rock excavation or dredging,primarily for the mechanical strength of the bedrock river channel and its stability.展开更多
In this paper we investigate the amalgams (M11,X) of rank 2 and characteristic 3,where X is a group of Lie type of rank 1 or permutation group of low rank,and give a characterization of the 3 local subgroups of the fi...In this paper we investigate the amalgams (M11,X) of rank 2 and characteristic 3,where X is a group of Lie type of rank 1 or permutation group of low rank,and give a characterization of the 3 local subgroups of the finite sporadic groups Co3 of Ly and Suz.展开更多
Currently a technique widely used for gold extraction is mercury by amalgamation technique, the tailing produced pollutes water of all kinds, so it is necessary to develop a form of selective mitigation, for which it ...Currently a technique widely used for gold extraction is mercury by amalgamation technique, the tailing produced pollutes water of all kinds, so it is necessary to develop a form of selective mitigation, for which it is necessary to use complexing agents based on calixarene functionalized with mercury sequestering agents. These are immobilized by adding supports based on natural silica to form polymers and make them insoluble in all types of solvents, so that they can be used as an extractor and at the same time regenerate to their original properties for continuous reuse.展开更多
Wiener amalgam spaces are a class of function spaces where the function’s local and global behavior can be easily distinguished. These spaces are ex-tensively used in Harmonic analysis that originated in the work of ...Wiener amalgam spaces are a class of function spaces where the function’s local and global behavior can be easily distinguished. These spaces are ex-tensively used in Harmonic analysis that originated in the work of Wiener. In this paper: we first introduce a two-variable exponent amalgam space (L<sup>q</sup><sup>()</sup>,l<sup>p</sup><sup>()</sup>)(Ω). Secondly, we investigate some basic properties of these spaces, and finally, we study their dual.展开更多
At gold mining in the 19th～20th centuries on technogenous deposits of cryolitozone, considerable amounts of mercury-containing elements (amalgams) have been accumulated. Urgency of their utilization is caused by nece...At gold mining in the 19th～20th centuries on technogenous deposits of cryolitozone, considerable amounts of mercury-containing elements (amalgams) have been accumulated. Urgency of their utilization is caused by necessity of providing safe vital activity. It can be achieved when elaborating up-to-date technologies providing self-support of utilization as a consequence of extracting precious metals. Difficulty of this problem realization is caused by the absence of theoretical and applied elaborations of making the appropriate works in cryolitozone. The main trends of the problem solving on the grounds of creating scientific method foundations for investigating the cryolitozone amalgams transformation have been considered in the paper. Dynamics has been shown and the revealed regularities of their transformation, testifying of the occurrence of hydrometallurgic processes in cryolitozone massifs in situ, resulted in the decline of gold reserves at decreasing dispersity and increasing hallmarking, have been analyzed.展开更多
In this paper, we shall deal with the boundedness of the Littlewood-Paley operators with rough kernel. We prove the boundedness of the Lusin-area integral μΩs and Littlewood-Paley functions μΩ and μλ^＊ on the w...In this paper, we shall deal with the boundedness of the Littlewood-Paley operators with rough kernel. We prove the boundedness of the Lusin-area integral μΩs and Littlewood-Paley functions μΩ and μλ^＊ on the weighted amalgam spaces （Lω^q,L^p）^α（R^n）as 1〈q≤α〈p≤∞.展开更多
Deepwater turbidite lobe reservoirs have massive hydrocarbon potential and represent one of the most promising exploration targets for hydrocarbon industry.Key elements of turbidite lobes internal heterogeneity includ...Deepwater turbidite lobe reservoirs have massive hydrocarbon potential and represent one of the most promising exploration targets for hydrocarbon industry.Key elements of turbidite lobes internal heterogeneity include the architectural hierarchy and complex amalgamations at each hierarchical level leading to the complex distribution of shale drapes.Due to limitation of data,to build models realistically honoring the reservoir architecture provides an effective way to reduce risk and improve hydrocarbon recovery.A variety of modeling techniques on turbidite lobes exist and can be broadly grouped into pixel-based,process-based,process-oriented,surface-based,object-based and a hybrid approach of two or more of these methods.The rationale and working process of methods is reviewed,along with their pros and cons.In terms of geological realism,object-based models can capture the most realistic architectures,including the multiple hierarchy and the amalgamations at different hierarchical levels.In terms of data conditioning,pixel-based and multiple-point statistics methods could honor the input data to the best degree.In practical,dif?ferent methods should be adopted depending on the goal of the project.Such a review could improve the understanding of existing modeling methods on turbidite lobes and could benefit the hydrocarbon exploration activities of such reservoirs in offshore China.展开更多
This case report describes a woman aged approximately 50 years who has suffered from balance dysregulation and dizziness for more than 10 years. Although the subject underwent several examinations to confirm the etiol...This case report describes a woman aged approximately 50 years who has suffered from balance dysregulation and dizziness for more than 10 years. Although the subject underwent several examinations to confirm the etiology of her symptoms, the root cause remained unknown. The symptoms were thought to be caused by electromagnetic wave hypersensitivity because the subject experienced uneasiness and dizziness when a cell phone was held close to her body. A cell phone was used to diagnose the collection of harmful electromagnetic waves, and an amalgam filling was determined to be the cause. The amalgam filling was removed under strict protection, and the subject’s symptoms completely disappeared soon after the filling was removed.展开更多
Mercury, generally found in natural gas, is extremely hazardous. Although average mercury levels are relatively low, they are further reduced to comply with future mercury regulations,which are stringent in order to a...Mercury, generally found in natural gas, is extremely hazardous. Although average mercury levels are relatively low, they are further reduced to comply with future mercury regulations,which are stringent in order to avoid releasing to the environment. Herein, vapor mercury adsorption was therefore investigated using two kinds of supports, granular activated carbon（GAC） and titanium dioxide（Ti O2）. Both supports were impregnated by silver（5 and 15 wt.%）,before testing against a commercial adsorbent（sulfur-impregnated activated carbon, SAC）. The adsorption isotherm, kinetics, and its thermodynamics of mercury adsorption were reported.The results revealed that Langmuir isotherm provided a better fit to the experimental data.Pseudo second-order was applicable to describe adsorption kinetics. The higher uniform Ag dispersion was a key factor for the higher mercury uptake. Ti O2 supported silver adsorbent showed higher mercury adsorption than the commercial one by approximately 2 times.Chemisorption of mercury onto silver active sites was confirmed by an amalgam formation found in the spent adsorbents.展开更多
The Ganjia Basin in Xiahe County,Gansu Province,China,is located on the northeastern edge of the Tibetan Plateau.The area lies in the transitional zone between the Plateau ethnic groups dominated by ancestral Tibetans...The Ganjia Basin in Xiahe County,Gansu Province,China,is located on the northeastern edge of the Tibetan Plateau.The area lies in the transitional zone between the Plateau ethnic groups dominated by ancestral Tibetans,and the Central Plains dynasties dominated by ancestral Han in history.The Ganjia Basin is therefore well suited to studying the history of the intermixing of the Han and Tibetan peoples.In this study,we collected samples of organic materials from two ancient cities,Bajiaocheng(BJC) and Sirougucheng(SRGC),in the Ganjia Basin,which were used for radiocarbon dating.Our aims were to determine the construction times and function of the cities,based on the radiocarbon ages,Bayesian age modeling,and the analysis of relevant historical records.The results are used to discuss the role of the Ganjia Basin in the conflicts between and the integration of the two ethnic groups during the historical period.We conclude that BJC was established during 663–732 CE(Common Era);its early occupation history can be divided into an initial establishment phase(670–780 CE) and a phase of regeneration(880–1030 CE).SRGC was probably built at the time of the transition between the Song and Yuan dynasties(~1271 CE).Combining the dating results with an analysis of the architectural styles and historical records,we conclude that BJC was originally built by the Tubo Kingdom as a military stronghold,and its major functions were military,economic and religious,and to support the major eastward expansion of the Tubo.SRGC was most likely a temple-focused city intended to promote Tibetan Buddhism which was a major political and religious leadership for the Tibetans at that time,reflecting changes in the status of different religions in the Ganjia Basin.In addition,the intermixing and blending of the Han and Tibetan groups,reflected by the human activities in the Ganjia Basin,was an important demographic and cultural foundation for the formation of the culturally-diverse but spiritually-united modern Chinese people.展开更多
The results of scientific and applied investigations on mercury contamination in the areas impacted by gold mining in Siberia and the Far East were considered. Gold mining has an impact on the contamination not onl...The results of scientific and applied investigations on mercury contamination in the areas impacted by gold mining in Siberia and the Far East were considered. Gold mining has an impact on the contamination not only in industrial but in residential territories too. The mutual Russian Chinese investigation on mercury contamination of the Amur (Heilongjiang) River was proposed. The program of solving of the problems of mercury contamination in Russian gold mining areas is discussed.展开更多
The objective in this experimental article is to gain evidential proof of near-dead cells, (sick-cells in relapse tumor) responding with recovery growth from special 4n, multi-chromatid chromosomes. Note, near-dead &l...The objective in this experimental article is to gain evidential proof of near-dead cells, (sick-cells in relapse tumor) responding with recovery growth from special 4n, multi-chromatid chromosomes. Note, near-dead </span><i><span style="font-family:Verdana;">normal human cells</span></i><span style="font-family:Verdana;"> with such converted chromosome structure gave rise to proliferative, fitness-gained, diploid </span><i><span style="font-family:Verdana;">first cells</span></i><span style="font-family:Verdana;">,</span><i> </i><span style="font-family:Verdana;">which</span><i> </i><span style="font-family:Verdana;">further gave rise to three different cell shape changed, recovery growth patterns. Previously, two cell shape changes had been recovered from same type normal human cells, transiently exposed to amino acid glutamine deficient growth medium with recovery growths also associated with presence of the special 4n cells. The 4n cell-division had been concluded to be a meiotic-like two-step division system to the fitness-gained diploid cells in numerous experiments. The main characteristi</span><span style="font-family:Verdana;">cs of this division system, was firstly whole genomes without polar oriented bent centromeres moving apart followed by much rarer simple fission division to two or three diploid cells, selectable for first cell proliferatio</span><span style="font-family:Verdana;">n. In general these 4n cells showed metaphase type rosette figures moving apart not in the normal spindle associated mitotic shape with centromeres polar-pointing with sloping arms. This sequence of events induced by glutamine-deficiency, was earlier shown to cause DNA breakage in metabolic studies however, the near-death condition was only assumed from normal fibro-blastic cell-sheet shrinkage. This was rectified by an RNA virus (Coxakie-B3), which virology known is a highly cell killing virus (4+ CPE on their scale). This virus replicates only in replicating cells, which led to recovery growths with progressive phenotypic cell-shape changes (spindle, polygonal and roundness cells), each intervened by “total” cell destruction. These three different growth patterns </span><span style="font-family:Verdana;">had morphologies, indistinguishably from today’s cancer diagnostic morphologies. “Mitotic” analyses of beginning growths for the three phenotypes revealed the special rosette figure separations from special 4n and higher ploidy level cells, and also total absence of spindle type mitoses. Tumorigenesis-relevant </span><span style="font-family:Verdana;">was centromere-puffing with premature chromatid separation, and chromatin compaction, a mechanism, that was suggested to protect the genome from damage (text). We suggest that the multi-chromatid polyploid cells with their genome reductive division system, can be a tractable </span><i><span style="font-family:Verdana;">in vitro</span></i><span style="font-family:Verdana;"> model system for therapy information, when repeated from a cell-killing agent, producing virus-free recovery growths. Will it be enacted upon? Not likely with profit-greedy industrial Goliath in the helm of cancer research. But, a not for profit cancer organization, could change this appalling situation.展开更多
文摘The main goal of this research is to investigate the effect of copper on compressive strength of dental amalgam. For this purpose amalgam capsules with two different content of copper were used. Cylindrical samples with diameter to height ratio 1 to 2, were prepared via molding method. To evaluate the role of copper element on compressive strength, com-pression test was done at different strain rates i.e. 0.02, 0.2, 0.4 and 2 min–1. The results and microscopic evaluations showed that an increase in copper content in amalgam caused to eliminate gamma2 phase and leaded to promote compressive strength.
文摘Objective: We describe patients with MCS, the evolution of the Quick Environmental Exposure and Sensitivity Inventory (QEESI) score with a special focus on people whose fillings were removed. Methods: We have conducted a retrospective longitudinal cohort study in patients diagnosed with MCS and attended in the outpatient Internal Medicine department of the University Hospital of San Juan de Alicante, from January 1, 2008 to January 1, 2021. Sociodemographic, clinical, QEESI and treatment-related variables were collected. We performed descriptive and inferential analyses. Mixed linear models were used to analyze the QEESI. Calculations were carried out with an α error of 5%. Results: Thirty-three patients were included (72.7% women, mean age 56.2). MCS was mainly triggered by mercury (N = 20) and food intolerance (N = 22). The mean interval from symptoms onset was 120 months (SD 81.6). 114 QEESIs were analyzed: 82 (N = 17 without amalgams) and 32 (N = 16 with amalgams). In patients without amalgams, severity scores increased across all subscales except the masking index (vs. with amalgams). Mean scores for the group without amalgams (vs. with amalgams) were: chemical intolerance, 62.8 points (vs. 63.4 and 46.7);other intolerances, 52.7 points (vs. 62.8 and 50.3);symptom severity, 63.2 (vs. 76.7 and 63.3);masking index, 3.9 (vs. 3.2 and 2.8);and life impacts, 63.1 (vs. 58.4 and 49.8). Conclusion: The profile of patient with MCS is a middle-aged woman who is a frequent user of healthcare services, presents a long diagnostic delay and has borne a great personal, work and socioeconomic impact. The QEESI is useful for the clinical follow-up of patients, including the optimal treatment response in the case of amalgams. Clinical Significance: People affected by Multiple Chemical Sensitivity deserve the attention, understanding and help of health professionals and family members, to face an invisible illness for those who do not suffer from it. Support is needed and doctors must raise awareness, and make an effort to understand and address this pathology. We suggest that protocolized amalgam extraction in accredited and prepared centers can reduce symptoms and improve quality of life, generating clinical, personal, family, occupational, social and occupational benefits.
文摘A total of 393 potholes(368 fluvial and 25 marine potholes)were studied at seven different sites in both the fluvial and marine environments.Diverse bedrock properties and large-scale delivery of tools and grinders regulate the dynamic growth,truncation,and amalgamation of potholes.Therefore,the principal objectives of the study are(i)to examine the relationship between the growth of potholes and substrate lithological with structural characteristics(applying geospatial and Schmidt hammer for rock strength analysis)and(ii)to measure the morphology,and size of tools and grinders,processes of truncation and amalgamation in hydro-geomorphic environment using various indices and field techniques.The result showed that large potholes are stretched in the direction of lineament axes and roughly parallel to the river flow direction.Here,the steady growth of pothole depth-diameter is controlled by active bedrock structures,tools,or grinders,and monsoonal high-velocity bank full discharge.Consequently,the deepening and widening of potholes are relatively slow at Bindu,Deuli,and marine beach Neil Island due to fewer structures and little supply of tools or grinders.In small stretches,(Damodar,Subarnarekha,and Rarhu)canyons and gorge-like features(bedrock incision)are formed at Rajrappa,Bhakuyadi,and Guridih sites due to cyclic truncation and amalgamation.Truncation and amalgamation processes restrict the vertical depth threshold value of potholes within 3m,particularly at Rajrappa,Bhakuyadi,and Guridih sites.Scientific study of the pothole's dynamic growth is greatly necessary for the different environmental engineering and river hydraulic projects like excavation,dredging,and dam or barrage construction.Successively,it is essential to compute the cost of rock excavation or dredging,primarily for the mechanical strength of the bedrock river channel and its stability.
基金Project supported by the National Natural Science Foundation of China
文摘In this paper we investigate the amalgams (M11,X) of rank 2 and characteristic 3,where X is a group of Lie type of rank 1 or permutation group of low rank,and give a characterization of the 3 local subgroups of the finite sporadic groups Co3 of Ly and Suz.
文摘Currently a technique widely used for gold extraction is mercury by amalgamation technique, the tailing produced pollutes water of all kinds, so it is necessary to develop a form of selective mitigation, for which it is necessary to use complexing agents based on calixarene functionalized with mercury sequestering agents. These are immobilized by adding supports based on natural silica to form polymers and make them insoluble in all types of solvents, so that they can be used as an extractor and at the same time regenerate to their original properties for continuous reuse.
文摘Wiener amalgam spaces are a class of function spaces where the function’s local and global behavior can be easily distinguished. These spaces are ex-tensively used in Harmonic analysis that originated in the work of Wiener. In this paper: we first introduce a two-variable exponent amalgam space (L<sup>q</sup><sup>()</sup>,l<sup>p</sup><sup>()</sup>)(Ω). Secondly, we investigate some basic properties of these spaces, and finally, we study their dual.
文摘At gold mining in the 19th～20th centuries on technogenous deposits of cryolitozone, considerable amounts of mercury-containing elements (amalgams) have been accumulated. Urgency of their utilization is caused by necessity of providing safe vital activity. It can be achieved when elaborating up-to-date technologies providing self-support of utilization as a consequence of extracting precious metals. Difficulty of this problem realization is caused by the absence of theoretical and applied elaborations of making the appropriate works in cryolitozone. The main trends of the problem solving on the grounds of creating scientific method foundations for investigating the cryolitozone amalgams transformation have been considered in the paper. Dynamics has been shown and the revealed regularities of their transformation, testifying of the occurrence of hydrometallurgic processes in cryolitozone massifs in situ, resulted in the decline of gold reserves at decreasing dispersity and increasing hallmarking, have been analyzed.
基金supported in part by National Natural Foundation of China (Grant No. 11161042 and No. 11071250)
文摘In this paper, we shall deal with the boundedness of the Littlewood-Paley operators with rough kernel. We prove the boundedness of the Lusin-area integral μΩs and Littlewood-Paley functions μΩ and μλ^＊ on the weighted amalgam spaces （Lω^q,L^p）^α（R^n）as 1〈q≤α〈p≤∞.
基金China Scholarship Council,University College Dublin are thanked for the financial support.
文摘Deepwater turbidite lobe reservoirs have massive hydrocarbon potential and represent one of the most promising exploration targets for hydrocarbon industry.Key elements of turbidite lobes internal heterogeneity include the architectural hierarchy and complex amalgamations at each hierarchical level leading to the complex distribution of shale drapes.Due to limitation of data,to build models realistically honoring the reservoir architecture provides an effective way to reduce risk and improve hydrocarbon recovery.A variety of modeling techniques on turbidite lobes exist and can be broadly grouped into pixel-based,process-based,process-oriented,surface-based,object-based and a hybrid approach of two or more of these methods.The rationale and working process of methods is reviewed,along with their pros and cons.In terms of geological realism,object-based models can capture the most realistic architectures,including the multiple hierarchy and the amalgamations at different hierarchical levels.In terms of data conditioning,pixel-based and multiple-point statistics methods could honor the input data to the best degree.In practical,dif?ferent methods should be adopted depending on the goal of the project.Such a review could improve the understanding of existing modeling methods on turbidite lobes and could benefit the hydrocarbon exploration activities of such reservoirs in offshore China.
文摘This case report describes a woman aged approximately 50 years who has suffered from balance dysregulation and dizziness for more than 10 years. Although the subject underwent several examinations to confirm the etiology of her symptoms, the root cause remained unknown. The symptoms were thought to be caused by electromagnetic wave hypersensitivity because the subject experienced uneasiness and dizziness when a cell phone was held close to her body. A cell phone was used to diagnose the collection of harmful electromagnetic waves, and an amalgam filling was determined to be the cause. The amalgam filling was removed under strict protection, and the subject’s symptoms completely disappeared soon after the filling was removed.
基金Petroleum Authority of Thailand (PTT) and Thailand Research Fund through the Royal Golden Jubilee Ph.D. Program (Grant no. PHD/0371/2552) for their financial supports
文摘Mercury, generally found in natural gas, is extremely hazardous. Although average mercury levels are relatively low, they are further reduced to comply with future mercury regulations,which are stringent in order to avoid releasing to the environment. Herein, vapor mercury adsorption was therefore investigated using two kinds of supports, granular activated carbon（GAC） and titanium dioxide（Ti O2）. Both supports were impregnated by silver（5 and 15 wt.%）,before testing against a commercial adsorbent（sulfur-impregnated activated carbon, SAC）. The adsorption isotherm, kinetics, and its thermodynamics of mercury adsorption were reported.The results revealed that Langmuir isotherm provided a better fit to the experimental data.Pseudo second-order was applicable to describe adsorption kinetics. The higher uniform Ag dispersion was a key factor for the higher mercury uptake. Ti O2 supported silver adsorbent showed higher mercury adsorption than the commercial one by approximately 2 times.Chemisorption of mercury onto silver active sites was confirmed by an amalgam formation found in the spent adsorbents.
基金National Key R&D Program of China,No.2018YFA0606400Strategic Pilot Science and Technology of the Chinese Academy of Sciences Project,No.XDA20040000Fundamental Research Funds for the Central Universities,No.lzujbky-2016-279。
文摘The Ganjia Basin in Xiahe County,Gansu Province,China,is located on the northeastern edge of the Tibetan Plateau.The area lies in the transitional zone between the Plateau ethnic groups dominated by ancestral Tibetans,and the Central Plains dynasties dominated by ancestral Han in history.The Ganjia Basin is therefore well suited to studying the history of the intermixing of the Han and Tibetan peoples.In this study,we collected samples of organic materials from two ancient cities,Bajiaocheng(BJC) and Sirougucheng(SRGC),in the Ganjia Basin,which were used for radiocarbon dating.Our aims were to determine the construction times and function of the cities,based on the radiocarbon ages,Bayesian age modeling,and the analysis of relevant historical records.The results are used to discuss the role of the Ganjia Basin in the conflicts between and the integration of the two ethnic groups during the historical period.We conclude that BJC was established during 663–732 CE(Common Era);its early occupation history can be divided into an initial establishment phase(670–780 CE) and a phase of regeneration(880–1030 CE).SRGC was probably built at the time of the transition between the Song and Yuan dynasties(~1271 CE).Combining the dating results with an analysis of the architectural styles and historical records,we conclude that BJC was originally built by the Tubo Kingdom as a military stronghold,and its major functions were military,economic and religious,and to support the major eastward expansion of the Tubo.SRGC was most likely a temple-focused city intended to promote Tibetan Buddhism which was a major political and religious leadership for the Tibetans at that time,reflecting changes in the status of different religions in the Ganjia Basin.In addition,the intermixing and blending of the Han and Tibetan groups,reflected by the human activities in the Ganjia Basin,was an important demographic and cultural foundation for the formation of the culturally-diverse but spiritually-united modern Chinese people.
文摘The results of scientific and applied investigations on mercury contamination in the areas impacted by gold mining in Siberia and the Far East were considered. Gold mining has an impact on the contamination not only in industrial but in residential territories too. The mutual Russian Chinese investigation on mercury contamination of the Amur (Heilongjiang) River was proposed. The program of solving of the problems of mercury contamination in Russian gold mining areas is discussed.
文摘The objective in this experimental article is to gain evidential proof of near-dead cells, (sick-cells in relapse tumor) responding with recovery growth from special 4n, multi-chromatid chromosomes. Note, near-dead </span><i><span style="font-family:Verdana;">normal human cells</span></i><span style="font-family:Verdana;"> with such converted chromosome structure gave rise to proliferative, fitness-gained, diploid </span><i><span style="font-family:Verdana;">first cells</span></i><span style="font-family:Verdana;">,</span><i> </i><span style="font-family:Verdana;">which</span><i> </i><span style="font-family:Verdana;">further gave rise to three different cell shape changed, recovery growth patterns. Previously, two cell shape changes had been recovered from same type normal human cells, transiently exposed to amino acid glutamine deficient growth medium with recovery growths also associated with presence of the special 4n cells. The 4n cell-division had been concluded to be a meiotic-like two-step division system to the fitness-gained diploid cells in numerous experiments. The main characteristi</span><span style="font-family:Verdana;">cs of this division system, was firstly whole genomes without polar oriented bent centromeres moving apart followed by much rarer simple fission division to two or three diploid cells, selectable for first cell proliferatio</span><span style="font-family:Verdana;">n. In general these 4n cells showed metaphase type rosette figures moving apart not in the normal spindle associated mitotic shape with centromeres polar-pointing with sloping arms. This sequence of events induced by glutamine-deficiency, was earlier shown to cause DNA breakage in metabolic studies however, the near-death condition was only assumed from normal fibro-blastic cell-sheet shrinkage. This was rectified by an RNA virus (Coxakie-B3), which virology known is a highly cell killing virus (4+ CPE on their scale). This virus replicates only in replicating cells, which led to recovery growths with progressive phenotypic cell-shape changes (spindle, polygonal and roundness cells), each intervened by “total” cell destruction. These three different growth patterns </span><span style="font-family:Verdana;">had morphologies, indistinguishably from today’s cancer diagnostic morphologies. “Mitotic” analyses of beginning growths for the three phenotypes revealed the special rosette figure separations from special 4n and higher ploidy level cells, and also total absence of spindle type mitoses. Tumorigenesis-relevant </span><span style="font-family:Verdana;">was centromere-puffing with premature chromatid separation, and chromatin compaction, a mechanism, that was suggested to protect the genome from damage (text). We suggest that the multi-chromatid polyploid cells with their genome reductive division system, can be a tractable </span><i><span style="font-family:Verdana;">in vitro</span></i><span style="font-family:Verdana;"> model system for therapy information, when repeated from a cell-killing agent, producing virus-free recovery growths. Will it be enacted upon? Not likely with profit-greedy industrial Goliath in the helm of cancer research. But, a not for profit cancer organization, could change this appalling situation.
