Innovative pulsed current-assisted multi-pass rolling tests were conducted on a 12-roll mill during the rolling deformation processing of SUS304 ultra-thin strips.The results show that in the first rolling pass,the ro...Innovative pulsed current-assisted multi-pass rolling tests were conducted on a 12-roll mill during the rolling deformation processing of SUS304 ultra-thin strips.The results show that in the first rolling pass,the rolling reduction rate of a conventionally rolled sample(at room temperature)is 33.8%,which can be increased to 41.5%by pulsed current-assisted rolling,enabling the formation of an ultra-thin strip with a size of 67.3μm in only one rolling pass.After three passes of pulsed current-assisted rolling,the thickness of the ultra-thin strip can be further reduced to 51.7μm.To clearly compare the effects of a pulsed current on the microstructure and mechanical response of the ultra-thin strip,ultra-thin strips with nearly the same thickness reduction were analyzed.It was found that pulsed current can reduce the degree of work-hardening of the rolled samples by promoting dislocation detachment,reducing the density of stacking faults,inhibiting martensitic phase transformation,and shortening the total length of grain boundaries.As a result,the ductility of ultra-thin strips can be effectively restored to approximately 16.3%while maintaining a high tensile strength of 1118 MPa.Therefore,pulsed current-assisted rolling deformation shows great potential for the formation of ultra-thin strips with a combination of high strength and ductility.展开更多
Thirteen novel sulfonylureas containing thiadiazole moiety were synthesized in a two-step reaction. Their structures were determined using IR, ^1H NMR, HRFTMS, and elemental analysis. Herbicidal activities of these co...Thirteen novel sulfonylureas containing thiadiazole moiety were synthesized in a two-step reaction. Their structures were determined using IR, ^1H NMR, HRFTMS, and elemental analysis. Herbicidal activities of these compounds were determined in the green house bio-assay. The results show that four compounds among them exhibit some activity toward four tested herbs.展开更多
Sulfonylurea herbicides have been widely used because of their low application rates, good crop sdeetivities and low mammalian toxicities. However, some sulfonylureas might persist unfavourably in the environment with...Sulfonylurea herbicides have been widely used because of their low application rates, good crop sdeetivities and low mammalian toxicities. However, some sulfonylureas might persist unfavourably in the environment with residual problems. In order to look for ecologically safer and environmentally benign sulfonylureas, and on keeping the pyrimidine ring being monosubstitated, 15 novd C5-monosubstituted benzenesulfonylurea compounds were synthesized. The structures of all the compounds synthesized were confirmed by demental analysis and ^1H NMR. Preliminary herbicidal activities of these new sulfonylurea compounds were determined by ALS screening （ in vitro） and pot bioassay experiments（ in vivo）. The herbicidal results show that some novel sulfonylureas are comparable to commercial Foramsulfuron and Monosulfuron.展开更多
Some new sulfonylureas and their hydroxylation products had been synthesized from 2-amino-4-methylpyrimidine. Their bioactivities against E. coli AHAS II in vitro were tested and the results indicated that the hydroxy...Some new sulfonylureas and their hydroxylation products had been synthesized from 2-amino-4-methylpyrimidine. Their bioactivities against E. coli AHAS II in vitro were tested and the results indicated that the hydroxylation decreased the inhibition activities of sulfonylureas significantly. Subsequently herbicidal tests against stem-growth of barnyard grass and root-growth of rape confirmed the above conclusion. The preliminary molecular docking studies were also carried out to investigate the binding modes of non-hydroxylated and hydroxylated sulfonylureas with AHAS.展开更多
BACKGROUND Transient neonatal diabetes mellitus(TNDM)is a rare form of diabetes mellitus that usually presents within the first 6 mo of life.Patients often enter remission within several months,although relapse can oc...BACKGROUND Transient neonatal diabetes mellitus(TNDM)is a rare form of diabetes mellitus that usually presents within the first 6 mo of life.Patients often enter remission within several months,although relapse can occur later in life.Mutations in the ABCC8 gene,which encodes the sulfonylurea receptor 1 of the ATP-sensitive potassium channel in pancreatic beta cells,are associated with TNDM and permanent neonatal diabetes.This study describes a novel de novo c.3880C>T heterozygous ABCC8 variant that causes TNDM and can be treated with sulfonylurea therapy.CASE SUMMARY We retrospectively analyzed 2 Chinese patients with TNDM who were diagnosed,treated,or referred for follow-up between September 2017 and September 2023.The patients were tested for mutations using targeted next-generation sequencing.Patients with neonatal diabetes mellitus caused by a c.3880C>T heterozygous missense variant in the ABCC8 gene have not been reported before.Both children had an onset of post-infectious diabetic ketoacidosis,which is worth noting.At a follow-up visit after discontinuing insulin injection,oral glyburide was found to be effective with no adverse reactions.CONCLUSION Early genetic testing of neonatal diabetes mellitus aids in accurate diagnosis and treatment and helps avoid daily insulin injections that may cause pain.展开更多
Four 4-monosubstituted pyrimidine pyridyl sulfonylureas were synthesized from pyridinesulfonamide and phenyl pyrimidylcarbamate and screened for herbicidal activities. We also reported a convenient preparation process...Four 4-monosubstituted pyrimidine pyridyl sulfonylureas were synthesized from pyridinesulfonamide and phenyl pyrimidylcarbamate and screened for herbicidal activities. We also reported a convenient preparation process of phenyl pyrimidylcarbamates from pyrimidineamine and phenyl chloroformate.展开更多
Temple of the Three Sus,which was first established during the Yuan Dynasty,features a natural,unrestrained,and classically elegant garden architectural style.This paper discusses the multiple characteristics and mean...Temple of the Three Sus,which was first established during the Yuan Dynasty,features a natural,unrestrained,and classically elegant garden architectural style.This paper discusses the multiple characteristics and meanings of traditional architectural decorative patterns at Temple of the Three Sus from a semiotic perspective.First,it analyzes the denotative aspects of these patterns,including their stylistic forms,structural frameworks,and craftsmanship techniques.Second,the paper classifies the traditional architectural decorative patterns of the Temple of the Three Sus based on the types of sources of these patterns and interprets the implied meanings of each.Finally,the paper explores the application of these traditional decorative patterns in modern urban design,specifically in Meishan City,discussing the inheritance and innovation of these patterns in contemporary urban design and emphasizing the importance of integrating tradition with modernity.展开更多
基金This work was supported by the fund of the National Natural Science Foundation of China(51974196)Major Program of National Natural Science Foundation of China(U22A20188)+1 种基金Science and Technology Innovation Teams of Shanxi Province(202304051001025)Central Government Guides the Special Fund Projects of Local Scientific and Technological Development(YDZX20191400002149).
文摘Innovative pulsed current-assisted multi-pass rolling tests were conducted on a 12-roll mill during the rolling deformation processing of SUS304 ultra-thin strips.The results show that in the first rolling pass,the rolling reduction rate of a conventionally rolled sample(at room temperature)is 33.8%,which can be increased to 41.5%by pulsed current-assisted rolling,enabling the formation of an ultra-thin strip with a size of 67.3μm in only one rolling pass.After three passes of pulsed current-assisted rolling,the thickness of the ultra-thin strip can be further reduced to 51.7μm.To clearly compare the effects of a pulsed current on the microstructure and mechanical response of the ultra-thin strip,ultra-thin strips with nearly the same thickness reduction were analyzed.It was found that pulsed current can reduce the degree of work-hardening of the rolled samples by promoting dislocation detachment,reducing the density of stacking faults,inhibiting martensitic phase transformation,and shortening the total length of grain boundaries.As a result,the ductility of ultra-thin strips can be effectively restored to approximately 16.3%while maintaining a high tensile strength of 1118 MPa.Therefore,pulsed current-assisted rolling deformation shows great potential for the formation of ultra-thin strips with a combination of high strength and ductility.
基金National Basic Research Program of China(No.2003CB11406)Key Project of National Natural Science Foucndation of China(No.20432010)
文摘Thirteen novel sulfonylureas containing thiadiazole moiety were synthesized in a two-step reaction. Their structures were determined using IR, ^1H NMR, HRFTMS, and elemental analysis. Herbicidal activities of these compounds were determined in the green house bio-assay. The results show that four compounds among them exhibit some activity toward four tested herbs.
基金Supported by the National Key Basic Research Program of China(No.2003CB114406)the National Natural Science Foundation Key Project of China(No.20432010).
文摘Sulfonylurea herbicides have been widely used because of their low application rates, good crop sdeetivities and low mammalian toxicities. However, some sulfonylureas might persist unfavourably in the environment with residual problems. In order to look for ecologically safer and environmentally benign sulfonylureas, and on keeping the pyrimidine ring being monosubstitated, 15 novd C5-monosubstituted benzenesulfonylurea compounds were synthesized. The structures of all the compounds synthesized were confirmed by demental analysis and ^1H NMR. Preliminary herbicidal activities of these new sulfonylurea compounds were determined by ALS screening （ in vitro） and pot bioassay experiments（ in vivo）. The herbicidal results show that some novel sulfonylureas are comparable to commercial Foramsulfuron and Monosulfuron.
文摘Some new sulfonylureas and their hydroxylation products had been synthesized from 2-amino-4-methylpyrimidine. Their bioactivities against E. coli AHAS II in vitro were tested and the results indicated that the hydroxylation decreased the inhibition activities of sulfonylureas significantly. Subsequently herbicidal tests against stem-growth of barnyard grass and root-growth of rape confirmed the above conclusion. The preliminary molecular docking studies were also carried out to investigate the binding modes of non-hydroxylated and hydroxylated sulfonylureas with AHAS.
基金Supported by the Department of Science and Technology of Henan Province,China,No.222102310461。
文摘BACKGROUND Transient neonatal diabetes mellitus(TNDM)is a rare form of diabetes mellitus that usually presents within the first 6 mo of life.Patients often enter remission within several months,although relapse can occur later in life.Mutations in the ABCC8 gene,which encodes the sulfonylurea receptor 1 of the ATP-sensitive potassium channel in pancreatic beta cells,are associated with TNDM and permanent neonatal diabetes.This study describes a novel de novo c.3880C>T heterozygous ABCC8 variant that causes TNDM and can be treated with sulfonylurea therapy.CASE SUMMARY We retrospectively analyzed 2 Chinese patients with TNDM who were diagnosed,treated,or referred for follow-up between September 2017 and September 2023.The patients were tested for mutations using targeted next-generation sequencing.Patients with neonatal diabetes mellitus caused by a c.3880C>T heterozygous missense variant in the ABCC8 gene have not been reported before.Both children had an onset of post-infectious diabetic ketoacidosis,which is worth noting.At a follow-up visit after discontinuing insulin injection,oral glyburide was found to be effective with no adverse reactions.CONCLUSION Early genetic testing of neonatal diabetes mellitus aids in accurate diagnosis and treatment and helps avoid daily insulin injections that may cause pain.
基金supported by the National Basic Research Program (No.2003CB 114406)the National Natural Science Foundation of China (No.20672062)the Tianjin Natural Science Foundation (No.07JCYBJC01200).
文摘Four 4-monosubstituted pyrimidine pyridyl sulfonylureas were synthesized from pyridinesulfonamide and phenyl pyrimidylcarbamate and screened for herbicidal activities. We also reported a convenient preparation process of phenyl pyrimidylcarbamates from pyrimidineamine and phenyl chloroformate.
文摘Temple of the Three Sus,which was first established during the Yuan Dynasty,features a natural,unrestrained,and classically elegant garden architectural style.This paper discusses the multiple characteristics and meanings of traditional architectural decorative patterns at Temple of the Three Sus from a semiotic perspective.First,it analyzes the denotative aspects of these patterns,including their stylistic forms,structural frameworks,and craftsmanship techniques.Second,the paper classifies the traditional architectural decorative patterns of the Temple of the Three Sus based on the types of sources of these patterns and interprets the implied meanings of each.Finally,the paper explores the application of these traditional decorative patterns in modern urban design,specifically in Meishan City,discussing the inheritance and innovation of these patterns in contemporary urban design and emphasizing the importance of integrating tradition with modernity.
