This paper aims to search for the solutions of the(2+1)-dimensional extended Boiti–Leon–Manna–Pempinelli equation.Lump solutions,breather solutions,mixed solutions with solitons,and lump-breather solutions can be o...This paper aims to search for the solutions of the(2+1)-dimensional extended Boiti–Leon–Manna–Pempinelli equation.Lump solutions,breather solutions,mixed solutions with solitons,and lump-breather solutions can be obtained from the N-soliton solution formula by using the long-wave limit approach and the conjugate complex method.We use both specific circumstances and general higher-order forms of the hybrid solutions as examples.With the help of maple software,we create density and 3D graphs to summarize the dynamic properties of these solutions.Additionally,it is possible to observe how the solutions'trajectory,velocity,and shape vary over time.展开更多
Soliton molecules have become one of the hot topics in recent years. In this article, we investigate soliton molecules and some novel hybrid solutions for the(2+1)-dimensional generalized Konopelchenko–Dubrovsky–Kau...Soliton molecules have become one of the hot topics in recent years. In this article, we investigate soliton molecules and some novel hybrid solutions for the(2+1)-dimensional generalized Konopelchenko–Dubrovsky–Kaup–Kupershmidt(gKDKK) equation by using the velocity resonance, module resonance, and long wave limits methods. By selecting some specific parameters, we can obtain soliton molecules and asymmetric soliton molecules of the gKDKK equation. And the interactions among N-soliton molecules are elastic. Furthermore, some novel hybrid solutions of the gKDKK equation can be obtained, which are composed of lumps,breathers, soliton molecules and asymmetric soliton molecules. Finally, the images of soliton molecules and some novel hybrid solutions are given, and their dynamic behavior is analyzed.展开更多
The lump solution is one of the exact solutions of the nonlinear evolution equation.In this paper,we study the lump solution and lump-type solutions of(2+1)-dimensional dissipative Ablowitz-Kaup-Newell-Segure(AKNS)equ...The lump solution is one of the exact solutions of the nonlinear evolution equation.In this paper,we study the lump solution and lump-type solutions of(2+1)-dimensional dissipative Ablowitz-Kaup-Newell-Segure(AKNS)equation by the Hirota bilinear method and test function method.With the help of Maple,we draw three-dimensional plots of the lump solution and lump-type solutions,and by observing the plots,we analyze the dynamic behavior of the(2+1)-dimensional dissipative AKNS equation.We find that the interaction solutions come in a variety of interesting forms.展开更多
The main aim of this paper is to investigate the different types of soliton molecule solutions of the second extend(3+1)-dimensional Jimbo-Miwa equation in a fluid.Four different localized waves:line solitons,breather...The main aim of this paper is to investigate the different types of soliton molecule solutions of the second extend(3+1)-dimensional Jimbo-Miwa equation in a fluid.Four different localized waves:line solitons,breather waves,lump solutions and resonance Y-type solutions are obtained by the Hirota bilinear method directly.Furthermore,the molecule solutions consisting of only line waves,breathers or lump waves are generated by combining velocity resonance condition and long wave limit method.Also,the molecule solutions such as line-breather molecule,lump-line molecule,lump-breather molecule,etc.consisting of different waves are derived.Meanwhile,higher-order molecule solutions composed of only line waves are acquired.展开更多
We investigate the techniques for velocity resonance and apply them to construct soliton molecules using two solitons of the extended Lax equation.What is more,each soliton molecule can be transformed into an asymmetr...We investigate the techniques for velocity resonance and apply them to construct soliton molecules using two solitons of the extended Lax equation.What is more,each soliton molecule can be transformed into an asymmetric soliton by changing the parameterφ.In addition,the collision between soliton molecules(or asymmetric soliton)and several soliton solutions is observed.Finally,some related pictures are presented.展开更多
What is already known about this topic?Dengue fever(DF)outbreaks affect hundreds of millions of people worldwide and have increased significantly in Guangdong Province in 2019.What is added by this report?This paper d...What is already known about this topic?Dengue fever(DF)outbreaks affect hundreds of millions of people worldwide and have increased significantly in Guangdong Province in 2019.What is added by this report?This paper described briefly DF outbreaks were attributed to several types of dengue virus(DENV)including DENV-1,DENV-2,and DENV-3 in 2019 in Guangdong,tracked the sources of viruses through phylogenetic analysis and epidemiological investigation,and primarily revealed the epidemiological links among the outbreaks.What are the implications for public health practice?The introduction of DENV from DF endemic areas increased pressure on the prevention and control of DF in Guangdong.Early detection of suspected cases and typing and genotyping of circulating viruses should be prioritized and enhanced to promptly assess the likelihood of local transmission,of introduction,and of subsequent sustained local transmission of the virus to implement optimal prevention and control strategies and measures.展开更多
On May 21,2021,a local case of coronavirus disease 2019(COVID-19)was confirmed in a 75-year-old woman(experienced onset of symptoms on May 18)in Liwan District,Guangzhou City,Guangdong Province,China.The number of inf...On May 21,2021,a local case of coronavirus disease 2019(COVID-19)was confirmed in a 75-year-old woman(experienced onset of symptoms on May 18)in Liwan District,Guangzhou City,Guangdong Province,China.The number of infections has increased in the following 10 days and led to 5 generations of transmission.展开更多
On December 19,2021,a 31-year-old male boarded a flight from Bhubaneswar,India to Mumbai,India,and then another flight from Mumbai to Muscat,Oman.On December 24,he returned from Muscat to Guangzhou by airplane and was...On December 19,2021,a 31-year-old male boarded a flight from Bhubaneswar,India to Mumbai,India,and then another flight from Mumbai to Muscat,Oman.On December 24,he returned from Muscat to Guangzhou by airplane and was transferred to a centralized isolation hotel in Foshan.He was sampled on the third day of the quarantine,and the result returned to be coronavirus disease 2019(COVID-19)positive on December 27,2021.He was transported to the Guangzhou Eighth People’s Hospital for isolated treatment by negative pressure ambulance on the same day.The case had two lungs focal inflamed according to the chest CT examination.展开更多
What is already known about this topic?The Omicron variant has been listed as a variant of concern,but the characteristics still remain unclear.What is added by this report?The vaccinated proportion of 65 imported cor...What is already known about this topic?The Omicron variant has been listed as a variant of concern,but the characteristics still remain unclear.What is added by this report?The vaccinated proportion of 65 imported coronavirus disease 2019 cases that were infected with Omicron variant in this study was 89.23%,which was higher than Delta cases.Most imported cases infected with Omicron were tested positive using polymerase chain reaction after entering Guangdong within 3 days,a shorter period than Delta.展开更多
On April 29,2022,a flight arrived at Baiyun International Airport,Guangzhou City,Guangdong Province,and departed from Amsterdam Schiphol Airport,Netherlands.After the first test of severe acute respiratory syndrome co...On April 29,2022,a flight arrived at Baiyun International Airport,Guangzhou City,Guangdong Province,and departed from Amsterdam Schiphol Airport,Netherlands.After the first test of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)nucleic acid at the Baiyun International Airport,all passengers were admitted to a quarantine hotel for a routine 14-day medical observation.On April 30,one of the passengers(a 20-year-old Chinese female)was reported positive for coronavirus disease 2019(COVID-19),and then a nasopharyngeal swab sample was immediately retested on May 1 and reported positive.展开更多
The(2+1)-dimensional generalized Bogoyavlensky-Konopelchenko equation is a significant physical model.By using the long wave limit method and confining the conjugation conditions on the interrelated solitons,the gener...The(2+1)-dimensional generalized Bogoyavlensky-Konopelchenko equation is a significant physical model.By using the long wave limit method and confining the conjugation conditions on the interrelated solitons,the general M-lump,high-order breather,and localized interaction hybrid solutions are investigated,respectively.Then we implement the numerical simulations to research their dynamical behaviors,which indicate that different parameters have very different dynamic properties and propagation modes of the waves.The method involved can be validly employed to get high-order waves and study their propagation phenomena of many nonlinear equations.展开更多
On April 23,2022,an international flight KQ880 from Nairobi,Kenya arrived at Guangzhou Baiyun International Airport,Guangzhou City,Guangdong Province.All passengers were transferred to the quarantine hotel for routine...On April 23,2022,an international flight KQ880 from Nairobi,Kenya arrived at Guangzhou Baiyun International Airport,Guangzhou City,Guangdong Province.All passengers were transferred to the quarantine hotel for routine 14-day medical observation and regularly tested of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)nucleic acid.One of the patients,a 27-year-old Chinese male,reported positive SARS-CoV-2 nucleic acid on April 27,2022.The patient had a history of full coronavirus disease 2019(COVID-19)vaccination and denied exposure to other COVID-19 cases in the past 14 days.After diagnosis,he was transferred to Guangzhou Eighth People’s Hospital for treatment.展开更多
Lynch syndrome(LS)is a highly penetrant inherited cancer predisposition syndrome,characterized by autosomal dominant inheritance and germline mutations in DNA mismatch repair(MMR)genes,including MLH1,MSH2,MSH6 and PMS...Lynch syndrome(LS)is a highly penetrant inherited cancer predisposition syndrome,characterized by autosomal dominant inheritance and germline mutations in DNA mismatch repair(MMR)genes,including MLH1,MSH2,MSH6 and PMS2.This study aimed to analyze the molecular defects and clinical manifestations of three LS families and propose individual prevention strategies suitable for mutation carriers in different families.The pathogenic gene mutations in each family were identified based on immunohistochemistry results combined with whole-exome sequencing.展开更多
Q fever is a zoonotic disease caused by infection withCoxiella burnetii(C.burnetii).Due to its atypical symptoms and the absence of specific detection methods,Q fever is underdiagnosed commonly.Herein,we report a case...Q fever is a zoonotic disease caused by infection withCoxiella burnetii(C.burnetii).Due to its atypical symptoms and the absence of specific detection methods,Q fever is underdiagnosed commonly.Herein,we report a case of Q fever confirmed by metagenomic next-generation sequencing(mNGS)in March 2024 in Guangdong Province,China.The patient initially experienced fever and was admitted to hospital six days later.Despite a series of laboratory tests conducted at the hospital,the pathogen remained undetermined.Ten days after admission,mNGS revealed that the patient was infected withC.burnetii.The patient subsequently underwent treatment with doxycycline and recovered well.Epidemiological investigation revealed that the patient had been exposed to sheep infected withC.burnetii without any protective measures in Jiangxi Province,China.Based on the comprehensive results of mNGS,exposure history,clinical manifestations and treatment response,the patient was confirmed as a Q fever case.As a neglected and underestimated illness,Q fever necessitates an elevation in awareness among medical staff and the public.The public should be encouraged to take personal protective measures when exposed to livestock.Further research is needed to explore the rational application of mNGS in the diagnosis of uncommon and unknown diseases.展开更多
文摘This paper aims to search for the solutions of the(2+1)-dimensional extended Boiti–Leon–Manna–Pempinelli equation.Lump solutions,breather solutions,mixed solutions with solitons,and lump-breather solutions can be obtained from the N-soliton solution formula by using the long-wave limit approach and the conjugate complex method.We use both specific circumstances and general higher-order forms of the hybrid solutions as examples.With the help of maple software,we create density and 3D graphs to summarize the dynamic properties of these solutions.Additionally,it is possible to observe how the solutions'trajectory,velocity,and shape vary over time.
基金supported by the National Natural Science Foundation of China (project Nos. 11371086,11671258,11975145)the Fund of Science and Technology Commission of Shanghai Municipality (project No. 13ZR1400100)the Fund of Donghua University,Institute for Nonlinear Sciences and the Fundamental Research Funds for the Central Universities。
文摘Soliton molecules have become one of the hot topics in recent years. In this article, we investigate soliton molecules and some novel hybrid solutions for the(2+1)-dimensional generalized Konopelchenko–Dubrovsky–Kaup–Kupershmidt(gKDKK) equation by using the velocity resonance, module resonance, and long wave limits methods. By selecting some specific parameters, we can obtain soliton molecules and asymmetric soliton molecules of the gKDKK equation. And the interactions among N-soliton molecules are elastic. Furthermore, some novel hybrid solutions of the gKDKK equation can be obtained, which are composed of lumps,breathers, soliton molecules and asymmetric soliton molecules. Finally, the images of soliton molecules and some novel hybrid solutions are given, and their dynamic behavior is analyzed.
文摘The lump solution is one of the exact solutions of the nonlinear evolution equation.In this paper,we study the lump solution and lump-type solutions of(2+1)-dimensional dissipative Ablowitz-Kaup-Newell-Segure(AKNS)equation by the Hirota bilinear method and test function method.With the help of Maple,we draw three-dimensional plots of the lump solution and lump-type solutions,and by observing the plots,we analyze the dynamic behavior of the(2+1)-dimensional dissipative AKNS equation.We find that the interaction solutions come in a variety of interesting forms.
文摘The main aim of this paper is to investigate the different types of soliton molecule solutions of the second extend(3+1)-dimensional Jimbo-Miwa equation in a fluid.Four different localized waves:line solitons,breather waves,lump solutions and resonance Y-type solutions are obtained by the Hirota bilinear method directly.Furthermore,the molecule solutions consisting of only line waves,breathers or lump waves are generated by combining velocity resonance condition and long wave limit method.Also,the molecule solutions such as line-breather molecule,lump-line molecule,lump-breather molecule,etc.consisting of different waves are derived.Meanwhile,higher-order molecule solutions composed of only line waves are acquired.
基金Project supported by the National Natural Science Foundation of China (Grant Nos. 11371086, 11671258, and 11975145)the Fund of Science and Technology Commission of Shanghai Municipality, China (Grant No. 13ZR1400100)+1 种基金the Fund of Institute for Nonlinear Sciences, Donghua Universitythe Fundamental Research Funds for the Central Universities, China (Grant No. 2232021G-13)
文摘We investigate the techniques for velocity resonance and apply them to construct soliton molecules using two solitons of the extended Lax equation.What is more,each soliton molecule can be transformed into an asymmetric soliton by changing the parameterφ.In addition,the collision between soliton molecules(or asymmetric soliton)and several soliton solutions is observed.Finally,some related pictures are presented.
文摘What is already known about this topic?Dengue fever(DF)outbreaks affect hundreds of millions of people worldwide and have increased significantly in Guangdong Province in 2019.What is added by this report?This paper described briefly DF outbreaks were attributed to several types of dengue virus(DENV)including DENV-1,DENV-2,and DENV-3 in 2019 in Guangdong,tracked the sources of viruses through phylogenetic analysis and epidemiological investigation,and primarily revealed the epidemiological links among the outbreaks.What are the implications for public health practice?The introduction of DENV from DF endemic areas increased pressure on the prevention and control of DF in Guangdong.Early detection of suspected cases and typing and genotyping of circulating viruses should be prioritized and enhanced to promptly assess the likelihood of local transmission,of introduction,and of subsequent sustained local transmission of the virus to implement optimal prevention and control strategies and measures.
基金The Key-Area Research and Development Program of Guangdong Province(2019B111103001,2020B111107001)The National Natural Science Foundation of China(No.82041030).
文摘On May 21,2021,a local case of coronavirus disease 2019(COVID-19)was confirmed in a 75-year-old woman(experienced onset of symptoms on May 18)in Liwan District,Guangzhou City,Guangdong Province,China.The number of infections has increased in the following 10 days and led to 5 generations of transmission.
文摘On December 19,2021,a 31-year-old male boarded a flight from Bhubaneswar,India to Mumbai,India,and then another flight from Mumbai to Muscat,Oman.On December 24,he returned from Muscat to Guangzhou by airplane and was transferred to a centralized isolation hotel in Foshan.He was sampled on the third day of the quarantine,and the result returned to be coronavirus disease 2019(COVID-19)positive on December 27,2021.He was transported to the Guangzhou Eighth People’s Hospital for isolated treatment by negative pressure ambulance on the same day.The case had two lungs focal inflamed according to the chest CT examination.
基金The Key-Area Research and Development Program of Guangdong Province(2019B111103001).
文摘What is already known about this topic?The Omicron variant has been listed as a variant of concern,but the characteristics still remain unclear.What is added by this report?The vaccinated proportion of 65 imported coronavirus disease 2019 cases that were infected with Omicron variant in this study was 89.23%,which was higher than Delta cases.Most imported cases infected with Omicron were tested positive using polymerase chain reaction after entering Guangdong within 3 days,a shorter period than Delta.
文摘On April 29,2022,a flight arrived at Baiyun International Airport,Guangzhou City,Guangdong Province,and departed from Amsterdam Schiphol Airport,Netherlands.After the first test of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)nucleic acid at the Baiyun International Airport,all passengers were admitted to a quarantine hotel for a routine 14-day medical observation.On April 30,one of the passengers(a 20-year-old Chinese female)was reported positive for coronavirus disease 2019(COVID-19),and then a nasopharyngeal swab sample was immediately retested on May 1 and reported positive.
基金The work was supported by the National Natural Science Foundation of China(Grant Nos.11371086,11671258,11975145)the Fund of Science and Technology Commission of Shanghai Municipality(No.13ZR1400100)the Fund of Donghua University,Institute for Nonlinear Sciences,and the Fundamental Research Funds for the Central Universitieswith contract number 2232021G-13.
文摘The(2+1)-dimensional generalized Bogoyavlensky-Konopelchenko equation is a significant physical model.By using the long wave limit method and confining the conjugation conditions on the interrelated solitons,the general M-lump,high-order breather,and localized interaction hybrid solutions are investigated,respectively.Then we implement the numerical simulations to research their dynamical behaviors,which indicate that different parameters have very different dynamic properties and propagation modes of the waves.The method involved can be validly employed to get high-order waves and study their propagation phenomena of many nonlinear equations.
文摘On April 23,2022,an international flight KQ880 from Nairobi,Kenya arrived at Guangzhou Baiyun International Airport,Guangzhou City,Guangdong Province.All passengers were transferred to the quarantine hotel for routine 14-day medical observation and regularly tested of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)nucleic acid.One of the patients,a 27-year-old Chinese male,reported positive SARS-CoV-2 nucleic acid on April 27,2022.The patient had a history of full coronavirus disease 2019(COVID-19)vaccination and denied exposure to other COVID-19 cases in the past 14 days.After diagnosis,he was transferred to Guangzhou Eighth People’s Hospital for treatment.
基金This study was supported by Wuhan Municipal Health Commission(No.WX18M02 and No.WX21Q08)。
文摘Lynch syndrome(LS)is a highly penetrant inherited cancer predisposition syndrome,characterized by autosomal dominant inheritance and germline mutations in DNA mismatch repair(MMR)genes,including MLH1,MSH2,MSH6 and PMS2.This study aimed to analyze the molecular defects and clinical manifestations of three LS families and propose individual prevention strategies suitable for mutation carriers in different families.The pathogenic gene mutations in each family were identified based on immunohistochemistry results combined with whole-exome sequencing.
基金supported by The Key-Area Research and Development Program of Guangdong Province (2022B1111020006)The Medical Scientific Research Foundation of Guangdong Province, China, 2024 (A2024600). We thank all the participants in the study.
文摘Q fever is a zoonotic disease caused by infection withCoxiella burnetii(C.burnetii).Due to its atypical symptoms and the absence of specific detection methods,Q fever is underdiagnosed commonly.Herein,we report a case of Q fever confirmed by metagenomic next-generation sequencing(mNGS)in March 2024 in Guangdong Province,China.The patient initially experienced fever and was admitted to hospital six days later.Despite a series of laboratory tests conducted at the hospital,the pathogen remained undetermined.Ten days after admission,mNGS revealed that the patient was infected withC.burnetii.The patient subsequently underwent treatment with doxycycline and recovered well.Epidemiological investigation revealed that the patient had been exposed to sheep infected withC.burnetii without any protective measures in Jiangxi Province,China.Based on the comprehensive results of mNGS,exposure history,clinical manifestations and treatment response,the patient was confirmed as a Q fever case.As a neglected and underestimated illness,Q fever necessitates an elevation in awareness among medical staff and the public.The public should be encouraged to take personal protective measures when exposed to livestock.Further research is needed to explore the rational application of mNGS in the diagnosis of uncommon and unknown diseases.
