As the English language gains its popularity with the day, every learner tries to find agood way of learning it. What is the best way to it has become a decades’ question. It is a pity that What a linguistic expert c...As the English language gains its popularity with the day, every learner tries to find agood way of learning it. What is the best way to it has become a decades’ question. It is a pity that What a linguistic expert can offer is but some pieces of advice. The keyfactor in language lies in hard work. No short way can be found. Theoretically, an expert展开更多
Correction to:J.For.Res.(2020)31(6):2581-2587 https://doi.org/10.1007/s11676-019-01036-2 After publication of this article,it was brought to our atten-tion that the legend to Figure 1 did not state that Figure 1d was ...Correction to:J.For.Res.(2020)31(6):2581-2587 https://doi.org/10.1007/s11676-019-01036-2 After publication of this article,it was brought to our atten-tion that the legend to Figure 1 did not state that Figure 1d was adapted from Figure 1d of Makarikov and Tkach(2013).In addition,Makarikov and Tkach(2013)should have been cited in the methods section.展开更多
On the view point of herb research in the world traditional medicines, Digeda is used to vary the plants originated from different species and families, such as India Digeda (Hurghada) is Swertie chirayita (Buch. -...On the view point of herb research in the world traditional medicines, Digeda is used to vary the plants originated from different species and families, such as India Digeda (Hurghada) is Swertie chirayita (Buch. -Ham.), Nepal Digeda (Hurghada) is Swertia cliete. Tibetan Digeda (Geda) are Saxifrage umbellulate Hook. f. &Thoms. and 5axifraga umbelluleta Hook. f. &Thoms. var. pectinata (C. Marq. & Airy-Shaw) J. T. Pan. Alatan Digeda (Hurghada) is Saxifrage unguiculata Engl. Menken Digeda (Hurghada) now differs greatly. In Mongolia, Mongolian doctors use Parnassia palustris as the Digeda; Gisborne to Hurghada (Sandinista) are Swertia erythrosticta and Gentiana Ioureirii. Temuco uses Swertia pseudochineis as Digeda (Baghdad). In Inner Mongolia Autonomous Region of China, Mongolian medicine Digeda is mainly originated from the three kinds of medicinal plants in Gentianaceae, Swertie pseudochinensis Hara, Gentianopsis barbata Froel Ma, and Lomatogonium rotetwn (L.) Friesex Nym. Additionally, in Inner Mongolia and Tibetan Autonomous Regions of China, the used Digeda is different from Inner Mongolia fork Medicine, Parnassia palustris and P. orepohila, Tibetan fork medicine is different from G. gilvostriata Flat Lei, G. barbara and G. paludosa. Halenia sibirica is recorded in Inner Mongolian Medicine 5tanderds. Therefore, herbal medicine Digede belongs to not only the nationality, but also the world.展开更多
Dear Editor,Understanding the evolution and survival mechanisms of endangered wild medicinal herbs is crucial for their cultivation,utilization,and conservation.The snow lotus species Saussurea involucrata(Kar.&Ki...Dear Editor,Understanding the evolution and survival mechanisms of endangered wild medicinal herbs is crucial for their cultivation,utilization,and conservation.The snow lotus species Saussurea involucrata(Kar.&Kir.)Sch.Bip.(2n=32)(i.e.the well-known Tianshan snow lotus)which belongs to the eudicot family Asteraceae,is a famous traditional Chinese medicinal herb having anti-inflammatory.展开更多
Xibei tree peony is a distinctive cultivar group that features red–purple blotches in petals.Interestingly,the pigmentations of blotches and non-blotches are largely independent of one another.The underlying molecula...Xibei tree peony is a distinctive cultivar group that features red–purple blotches in petals.Interestingly,the pigmentations of blotches and non-blotches are largely independent of one another.The underlying molecular mechanism had attracted lots of attention from investigators,but was still uncertain.Our present work demonstrates the factors that are closely related to blotch formation in Paeonia rockii‘Shu Sheng Peng Mo’.Non-blotch pigmentation is prevented by the silencing of anthocyanin structural genes,among which PrF3H,PrDFR,and PrANS are the three major genes.We characterized two R2R3-MYBs as the key transcription factors that control the early and late anthocyanin biosynthetic pathways.PrMYBa1,which belongs to MYB subgroup 7(SG7)was found to activate the early biosynthetic gene(EBG)PrF3H by interacting with SG5 member PrMYBa2 to form an‘MM’complex.The SG6 member PrMYBa3 interacts with two SG5(IIIf)bHLHs to synergistically activate the late biosynthetic genes(LBGs)PrDFR and PrANS,which is essential for anthocyanin accumulation in petal blotches.The comparison of methylation levels of the PrANS and PrF3H promoters between blotch and non-blotch indicated a correlation between hypermethylation and gene silencing.The methylation dynamics of PrANS promoter during flower development revealed a potential early demethylating reaction,which may have contributed to the particular expression of PrANS solely in the blotch area.We suggest that the formation of petal blotch may be highly associated with the cooperation of transcriptional activation and DNA methylation of structural gene promoters.展开更多
Coxsackievirus(CV)B belongs to the species Enterovirus B,genus Enterovirus of the family Picornaviridae.Enterovirus B(EV-B)includes 63 serotypes:CVB1-6;CVA9;echoviruses E1-7,9,11-21,24-27,and 29-33;EV-B69,EV-B 73-75,E...Coxsackievirus(CV)B belongs to the species Enterovirus B,genus Enterovirus of the family Picornaviridae.Enterovirus B(EV-B)includes 63 serotypes:CVB1-6;CVA9;echoviruses E1-7,9,11-21,24-27,and 29-33;EV-B69,EV-B 73-75,EV-B77-88,EV-B 93,EV-B 97-101,EV-B 106-107.展开更多
Professor Beger is one of the most renowned general and gastrointestinal surgeons in Germany.His worldwide reputation is based on his expertise in surgery of the pancreas.He belongs to the group of the 100most cited s...Professor Beger is one of the most renowned general and gastrointestinal surgeons in Germany.His worldwide reputation is based on his expertise in surgery of the pancreas.He belongs to the group of the 100most cited surgeons worldwide.展开更多
This essay analyses Theodore Dreiser’s Sister Carrie through the lens of cultural studies,examining the portrayal of domesticity and the quest for an ideal home in late-nineteenth-century America.It explores the comp...This essay analyses Theodore Dreiser’s Sister Carrie through the lens of cultural studies,examining the portrayal of domesticity and the quest for an ideal home in late-nineteenth-century America.It explores the complex relationships between the main characters,Carrie and Hurstwood,and their families,as well as their struggles with materialism and alienation.Through close analysis of societal context,the characters’familial backgrounds and emotional yearnings,the essay delves into the characters’longing for stability and belonging and their journey toward understanding the true essence of dwelling amidst the changing urban landscape.It argues that Dreiser’s novel critiques the superficial pursuit of material comforts and highlights the importance of introspection and self-discovery in finding lasting happiness amidst societal turmoil.Ultimately,through the prism of domesticity,the essay delves into broader themes of identity,belonging,and existential fulfillment in a heartless society marked by materialism and alienation.展开更多
Enteroviruses (EVs) are members of the genus Enteroviruswithin the orderPicornavirales, family Picornaviridae, and consist of 12 species, including EV-A, EV-B, EV-C, and EV-D, which are associated with human infection...Enteroviruses (EVs) are members of the genus Enteroviruswithin the orderPicornavirales, family Picornaviridae, and consist of 12 species, including EV-A, EV-B, EV-C, and EV-D, which are associated with human infections. Coxsackievirus B6 (CV-B6)belongs to the species EV-B, which currently consists of 63 serotypes, including echovirus (serotypes 1–7,9, 11–21, 24–27, 29–33), coxsackievirus group A (CVA9), coxsackievirus group B (CV-B, serotypes 1–6),the newly identified EVs (serotypes EV-B69, B73–75,B77–88, B93, B97–98, B100–101, B106–107, and B110–113), and the simian enterovirus SA5.展开更多
SIX1(OMIM 601205),as a member of the SIX homeobox transcription factor family,belongs to homologs of the Drosophila‘sine oculis’gene that expresses primarily in the developing visual system of the fly.The SIX family...SIX1(OMIM 601205),as a member of the SIX homeobox transcription factor family,belongs to homologs of the Drosophila‘sine oculis’gene that expresses primarily in the developing visual system of the fly.The SIX family includes six members(SIX1–SIX6),which share a homologous DNA-binding homeodomain(HD)and a highly conserved protein–protein interacting SIX domain(SD)[1].展开更多
Chlorophylls and carotenoids are essential and bene fi cial substances for both plant and human health.Identifying the regulatory network of these pigments is necessary for improving fruit quality.In a previous study,...Chlorophylls and carotenoids are essential and bene fi cial substances for both plant and human health.Identifying the regulatory network of these pigments is necessary for improving fruit quality.In a previous study,we identi fi ed an R2R3-MYB transcription factor,SlMYB72,that plays an important role in chlorophyll and carotenoid metabolism in tomato fruit.Here,we demonstrated that the SlMYB72-interacting protein SlZHD17,which belongs to the zinc-fi nger homeodomain transcription factor family,also functions in chlorophyll and carotenoid metabolism.Silencing SIZHD 17 in tomato improved multiple bene fi cial agronomic traits,including dwar fi sm,accelerated fl owering,and earlier fruit harvest.More importantly,downregulating SIZHD17 in fruits resulted in larger chloroplasts and a higher chlorophyll content.Dual-luciferase,yeast one-hybrid and electrophoretic mobility shift assays clari fi ed that SlZHD17 regulates the chlorophyll biosynthesis gene SIPOR-B and chloroplast developmental regulator SITKN2 in a direct manner.Chlorophyll degradation and plastid transformation were also retarded after suppression of SIZHD17 in fruits,which was caused by the inhibition of SISGR1,a crucial factor in chlorophyll degradation.On the other hand,the expression of the carotenoid biosynthesis genes SIPSY1 and SIZISO was also suppressed and directly regulated by SlZHD17,which induced uneven pigmentation and decreased the lycopene content in fruits with SIZHD17 suppression at the ripe stage.Furthermore,the protein-protein interactions between SlZHD17 and other pigment regulators,including SlARF4,SlBEL11,and SlTAGL1,were also presented.This study provides new insight into the complex pigment regulatory network and provides new options for breeding strategies aiming to improve fruit quality.展开更多
On February 14,2017 the Sinopec Corp.convened a meeting on reviewing and assessing the commercial application of the technology relating to a 200 kt/a unit for production of cyclyhexanone through esterification.The ex...On February 14,2017 the Sinopec Corp.convened a meeting on reviewing and assessing the commercial application of the technology relating to a 200 kt/a unit for production of cyclyhexanone through esterification.The expert group attending the meeting unanimously recognized that this technology is uniquely innovative around the world,and the production process。展开更多
Characteristics of the series of severe geomagnetic storms generated by severalextraodinarily large solar flares occured in a super active region(5395) in March 1989 areanalyzed in this paper in association with the l...Characteristics of the series of severe geomagnetic storms generated by severalextraodinarily large solar flares occured in a super active region(5395) in March 1989 areanalyzed in this paper in association with the location and importance of parent flares.The storm series consisted of at least four independent storms. The most reasonable par-ent flares for these storms can be selected from the flares with optical importance equalto or greater than 2B, X-ray classification being X, and duration longer than 1.5 hours.展开更多
Chronic nephritis is a frequently seen disease,but difficult to treat,from which the restora-tion of damaged renal functions is even more dif-ficult.In clinical practice,the authors
Characterization of special morphology of periclase,corundum,spinel and mulllte/Gao Zhenxin,Zhang Wei,Huang Zhenwu,Wei Xiaohui〃Naihuo Cailiao.-2021,55(2):93 The crystal growth theory of periclase,corundum,spinel and ...Characterization of special morphology of periclase,corundum,spinel and mulllte/Gao Zhenxin,Zhang Wei,Huang Zhenwu,Wei Xiaohui〃Naihuo Cailiao.-2021,55(2):93 The crystal growth theory of periclase,corundum,spinel and mullite in different conditions was studied by means of high-resolution instruments,and the special-morphology crystals were characterized.Periclase of cubic system and euhedral spinel are typical cube and octahedron,and can also form any other shapes,such as joined crystallization and step growth,which are limited by the crystallization environment.Mullite belongs to orthorhombic system and has the long columnar crystallization habit.However,the euhedral development is often restricted by the environment.Mullite crystallizes(or peritectic reaction happens between corundum and liquid phase)into columnar shapes when there is a certain amount of liquid phase.The combination of mullite and corundum can exist in the form of simple symbiosis or peritectic reaction.periclase;corundum;spinel;mullite;microstructure.展开更多
On June 16,TencentOS worked with inWatch to promote new smart watch inWatch T,which means that inWatch debuted officially as the first batch of Tencent intelligent hardware cooperators after Tencent announced the"...On June 16,TencentOS worked with inWatch to promote new smart watch inWatch T,which means that inWatch debuted officially as the first batch of Tencent intelligent hardware cooperators after Tencent announced the"TOS+"strategy one month ago.This disclosed TencentOS watch system belongs to the"TOS+"platform strategy announced by Tencent earlier.展开更多
The renovation of historical blocks often stays at the material level of buildings, ignoring the deeper spiritual level, which can not arouse people’s sense of belonging to the city memory. Based on the protection of...The renovation of historical blocks often stays at the material level of buildings, ignoring the deeper spiritual level, which can not arouse people’s sense of belonging to the city memory. Based on the protection of local Qianshan area culture, taking Hekou ancient town street of Ming and Qing Dynasty as an example, with the construction of place spirit and sense of belonging as the primary goal, and combining the history and culture of the city, the current situation of the streets and the characteristics of the buildings, this paper put forward the relevant renovation measures to provide a kind of thinking for the refined and rational renovation of the blocks in the future.展开更多
Pits are circular to elliptical,steep-sided,flat-bottomed depressions interpreted to form from collapse into a cavity.They occur on Earth,Venus and Mars and range in diameter from;00 m to several kilometres(e.g.
文摘As the English language gains its popularity with the day, every learner tries to find agood way of learning it. What is the best way to it has become a decades’ question. It is a pity that What a linguistic expert can offer is but some pieces of advice. The keyfactor in language lies in hard work. No short way can be found. Theoretically, an expert
文摘Correction to:J.For.Res.(2020)31(6):2581-2587 https://doi.org/10.1007/s11676-019-01036-2 After publication of this article,it was brought to our atten-tion that the legend to Figure 1 did not state that Figure 1d was adapted from Figure 1d of Makarikov and Tkach(2013).In addition,Makarikov and Tkach(2013)should have been cited in the methods section.
文摘On the view point of herb research in the world traditional medicines, Digeda is used to vary the plants originated from different species and families, such as India Digeda (Hurghada) is Swertie chirayita (Buch. -Ham.), Nepal Digeda (Hurghada) is Swertia cliete. Tibetan Digeda (Geda) are Saxifrage umbellulate Hook. f. &Thoms. and 5axifraga umbelluleta Hook. f. &Thoms. var. pectinata (C. Marq. & Airy-Shaw) J. T. Pan. Alatan Digeda (Hurghada) is Saxifrage unguiculata Engl. Menken Digeda (Hurghada) now differs greatly. In Mongolia, Mongolian doctors use Parnassia palustris as the Digeda; Gisborne to Hurghada (Sandinista) are Swertia erythrosticta and Gentiana Ioureirii. Temuco uses Swertia pseudochineis as Digeda (Baghdad). In Inner Mongolia Autonomous Region of China, Mongolian medicine Digeda is mainly originated from the three kinds of medicinal plants in Gentianaceae, Swertie pseudochinensis Hara, Gentianopsis barbata Froel Ma, and Lomatogonium rotetwn (L.) Friesex Nym. Additionally, in Inner Mongolia and Tibetan Autonomous Regions of China, the used Digeda is different from Inner Mongolia fork Medicine, Parnassia palustris and P. orepohila, Tibetan fork medicine is different from G. gilvostriata Flat Lei, G. barbara and G. paludosa. Halenia sibirica is recorded in Inner Mongolian Medicine 5tanderds. Therefore, herbal medicine Digede belongs to not only the nationality, but also the world.
基金This work was supported by grants from the National Natural Science Foundation of China(U2003122)the Second Tibetan Plateau Scientific Expedition and Research(STEP)program(2019QZKK0502).Sequencing service was provided by Bioyi Biotechnology Co.,Ltd.Wuhan,China。
文摘Dear Editor,Understanding the evolution and survival mechanisms of endangered wild medicinal herbs is crucial for their cultivation,utilization,and conservation.The snow lotus species Saussurea involucrata(Kar.&Kir.)Sch.Bip.(2n=32)(i.e.the well-known Tianshan snow lotus)which belongs to the eudicot family Asteraceae,is a famous traditional Chinese medicinal herb having anti-inflammatory.
基金This work was supported by the National Natural Science Foundation of China(No.32030095).
文摘Xibei tree peony is a distinctive cultivar group that features red–purple blotches in petals.Interestingly,the pigmentations of blotches and non-blotches are largely independent of one another.The underlying molecular mechanism had attracted lots of attention from investigators,but was still uncertain.Our present work demonstrates the factors that are closely related to blotch formation in Paeonia rockii‘Shu Sheng Peng Mo’.Non-blotch pigmentation is prevented by the silencing of anthocyanin structural genes,among which PrF3H,PrDFR,and PrANS are the three major genes.We characterized two R2R3-MYBs as the key transcription factors that control the early and late anthocyanin biosynthetic pathways.PrMYBa1,which belongs to MYB subgroup 7(SG7)was found to activate the early biosynthetic gene(EBG)PrF3H by interacting with SG5 member PrMYBa2 to form an‘MM’complex.The SG6 member PrMYBa3 interacts with two SG5(IIIf)bHLHs to synergistically activate the late biosynthetic genes(LBGs)PrDFR and PrANS,which is essential for anthocyanin accumulation in petal blotches.The comparison of methylation levels of the PrANS and PrF3H promoters between blotch and non-blotch indicated a correlation between hypermethylation and gene silencing.The methylation dynamics of PrANS promoter during flower development revealed a potential early demethylating reaction,which may have contributed to the particular expression of PrANS solely in the blotch area.We suggest that the formation of petal blotch may be highly associated with the cooperation of transcriptional activation and DNA methylation of structural gene promoters.
基金supported by the Research Projects of Yunnan Province,China[grant numbers:202202AA100016]CAMS Innovation Fund for Medical Sciences[grant numbers:2021-I2M-1-043]General Basic Research Scheme of Yunnan Provincial Department of Science and Technology[grant numbers:202001BB050060]。
文摘Coxsackievirus(CV)B belongs to the species Enterovirus B,genus Enterovirus of the family Picornaviridae.Enterovirus B(EV-B)includes 63 serotypes:CVB1-6;CVA9;echoviruses E1-7,9,11-21,24-27,and 29-33;EV-B69,EV-B 73-75,EV-B77-88,EV-B 93,EV-B 97-101,EV-B 106-107.
文摘Professor Beger is one of the most renowned general and gastrointestinal surgeons in Germany.His worldwide reputation is based on his expertise in surgery of the pancreas.He belongs to the group of the 100most cited surgeons worldwide.
文摘This essay analyses Theodore Dreiser’s Sister Carrie through the lens of cultural studies,examining the portrayal of domesticity and the quest for an ideal home in late-nineteenth-century America.It explores the complex relationships between the main characters,Carrie and Hurstwood,and their families,as well as their struggles with materialism and alienation.Through close analysis of societal context,the characters’familial backgrounds and emotional yearnings,the essay delves into the characters’longing for stability and belonging and their journey toward understanding the true essence of dwelling amidst the changing urban landscape.It argues that Dreiser’s novel critiques the superficial pursuit of material comforts and highlights the importance of introspection and self-discovery in finding lasting happiness amidst societal turmoil.Ultimately,through the prism of domesticity,the essay delves into broader themes of identity,belonging,and existential fulfillment in a heartless society marked by materialism and alienation.
基金supported by the National Key Science and Technology Projects of China [Project Nos.2017ZX10104001,2018ZX10711001,and 2018ZX10713002]
文摘Enteroviruses (EVs) are members of the genus Enteroviruswithin the orderPicornavirales, family Picornaviridae, and consist of 12 species, including EV-A, EV-B, EV-C, and EV-D, which are associated with human infections. Coxsackievirus B6 (CV-B6)belongs to the species EV-B, which currently consists of 63 serotypes, including echovirus (serotypes 1–7,9, 11–21, 24–27, 29–33), coxsackievirus group A (CVA9), coxsackievirus group B (CV-B, serotypes 1–6),the newly identified EVs (serotypes EV-B69, B73–75,B77–88, B93, B97–98, B100–101, B106–107, and B110–113), and the simian enterovirus SA5.
基金supported by grants from National Natural Science Foundation of China[81700920,81970894,and81870725]Natural Science Foundation of Jiangsu Province[BK20191229,BK20180048,and 17KJA180008]+3 种基金the Fifth‘333Project’Scientific Research Foundation of Jiangsu Province[BRA2019192 and BRA2019278]Medical Scientific Research Project from Health and Family Planning Commission of Jiangsu Province[H201666]Shanghai Municipal Education Commission–Gaofeng Clinical Medicine Grant[20152519]Science and Technology Commission of Shanghai Municipality[14DZ2260300]。
文摘SIX1(OMIM 601205),as a member of the SIX homeobox transcription factor family,belongs to homologs of the Drosophila‘sine oculis’gene that expresses primarily in the developing visual system of the fly.The SIX family includes six members(SIX1–SIX6),which share a homologous DNA-binding homeodomain(HD)and a highly conserved protein–protein interacting SIX domain(SD)[1].
基金This work was sponsored by the National Natural Science Foundation of China(No.32002100,31772370,31972470).
文摘Chlorophylls and carotenoids are essential and bene fi cial substances for both plant and human health.Identifying the regulatory network of these pigments is necessary for improving fruit quality.In a previous study,we identi fi ed an R2R3-MYB transcription factor,SlMYB72,that plays an important role in chlorophyll and carotenoid metabolism in tomato fruit.Here,we demonstrated that the SlMYB72-interacting protein SlZHD17,which belongs to the zinc-fi nger homeodomain transcription factor family,also functions in chlorophyll and carotenoid metabolism.Silencing SIZHD 17 in tomato improved multiple bene fi cial agronomic traits,including dwar fi sm,accelerated fl owering,and earlier fruit harvest.More importantly,downregulating SIZHD17 in fruits resulted in larger chloroplasts and a higher chlorophyll content.Dual-luciferase,yeast one-hybrid and electrophoretic mobility shift assays clari fi ed that SlZHD17 regulates the chlorophyll biosynthesis gene SIPOR-B and chloroplast developmental regulator SITKN2 in a direct manner.Chlorophyll degradation and plastid transformation were also retarded after suppression of SIZHD17 in fruits,which was caused by the inhibition of SISGR1,a crucial factor in chlorophyll degradation.On the other hand,the expression of the carotenoid biosynthesis genes SIPSY1 and SIZISO was also suppressed and directly regulated by SlZHD17,which induced uneven pigmentation and decreased the lycopene content in fruits with SIZHD17 suppression at the ripe stage.Furthermore,the protein-protein interactions between SlZHD17 and other pigment regulators,including SlARF4,SlBEL11,and SlTAGL1,were also presented.This study provides new insight into the complex pigment regulatory network and provides new options for breeding strategies aiming to improve fruit quality.
文摘On February 14,2017 the Sinopec Corp.convened a meeting on reviewing and assessing the commercial application of the technology relating to a 200 kt/a unit for production of cyclyhexanone through esterification.The expert group attending the meeting unanimously recognized that this technology is uniquely innovative around the world,and the production process。
文摘Characteristics of the series of severe geomagnetic storms generated by severalextraodinarily large solar flares occured in a super active region(5395) in March 1989 areanalyzed in this paper in association with the location and importance of parent flares.The storm series consisted of at least four independent storms. The most reasonable par-ent flares for these storms can be selected from the flares with optical importance equalto or greater than 2B, X-ray classification being X, and duration longer than 1.5 hours.
文摘Chronic nephritis is a frequently seen disease,but difficult to treat,from which the restora-tion of damaged renal functions is even more dif-ficult.In clinical practice,the authors
文摘Characterization of special morphology of periclase,corundum,spinel and mulllte/Gao Zhenxin,Zhang Wei,Huang Zhenwu,Wei Xiaohui〃Naihuo Cailiao.-2021,55(2):93 The crystal growth theory of periclase,corundum,spinel and mullite in different conditions was studied by means of high-resolution instruments,and the special-morphology crystals were characterized.Periclase of cubic system and euhedral spinel are typical cube and octahedron,and can also form any other shapes,such as joined crystallization and step growth,which are limited by the crystallization environment.Mullite belongs to orthorhombic system and has the long columnar crystallization habit.However,the euhedral development is often restricted by the environment.Mullite crystallizes(or peritectic reaction happens between corundum and liquid phase)into columnar shapes when there is a certain amount of liquid phase.The combination of mullite and corundum can exist in the form of simple symbiosis or peritectic reaction.periclase;corundum;spinel;mullite;microstructure.
文摘On June 16,TencentOS worked with inWatch to promote new smart watch inWatch T,which means that inWatch debuted officially as the first batch of Tencent intelligent hardware cooperators after Tencent announced the"TOS+"strategy one month ago.This disclosed TencentOS watch system belongs to the"TOS+"platform strategy announced by Tencent earlier.
基金Sponsored by General Project of Humanities and Social Sciences in Colleges and Universities of Jiangxi Province(YS18126)
文摘The renovation of historical blocks often stays at the material level of buildings, ignoring the deeper spiritual level, which can not arouse people’s sense of belonging to the city memory. Based on the protection of local Qianshan area culture, taking Hekou ancient town street of Ming and Qing Dynasty as an example, with the construction of place spirit and sense of belonging as the primary goal, and combining the history and culture of the city, the current situation of the streets and the characteristics of the buildings, this paper put forward the relevant renovation measures to provide a kind of thinking for the refined and rational renovation of the blocks in the future.
文摘Pits are circular to elliptical,steep-sided,flat-bottomed depressions interpreted to form from collapse into a cavity.They occur on Earth,Venus and Mars and range in diameter from;00 m to several kilometres(e.g.