The paper gives two estimates of the distance between adjacent zeros of solutions of the first\|order delay differential equation x′(t)+p(t)x(t-τ) =0 in the case when p(t)≥0 and ∫ t t-τ p(s)d s-1e ...The paper gives two estimates of the distance between adjacent zeros of solutions of the first\|order delay differential equation x′(t)+p(t)x(t-τ) =0 in the case when p(t)≥0 and ∫ t t-τ p(s)d s-1e oscillates or p(t) itself oscillates.展开更多
Deoxyribonucleic acid(DNA)is a double-strandedc macromoleculee composed of two antiparallel polynucleotide chains.Each chain is formed by deoxyribose and phosphate as the backbone and forms complementary base pairs th...Deoxyribonucleic acid(DNA)is a double-strandedc macromoleculee composed of two antiparallel polynucleotide chains.Each chain is formed by deoxyribose and phosphate as the backbone and forms complementary base pairs through hydrogen bonds.This structure ensures the stability of DNA and enables thec precise replication of genetic information[1].In biological processes,DNA collaborates with various biomolecules,including proteins,RNAs,small molecules,lipids,and carbohydrates[2].展开更多
文摘The paper gives two estimates of the distance between adjacent zeros of solutions of the first\|order delay differential equation x′(t)+p(t)x(t-τ) =0 in the case when p(t)≥0 and ∫ t t-τ p(s)d s-1e oscillates or p(t) itself oscillates.
基金supported by the National Natural Science Foundation of China(No.81970431)the Hunan Provincial Natural Science Foundation of China(Nos.2024JJ9370 and 2025JJ50502)+2 种基金the Postgraduate Scientific Research Innovation Project of Hunan Province(Nos.CX20230992 and CX20240840)the Municipal Financial Subsidy for Shenzhen TCM Key Discipline Constructionthe Flagship Department Construction Project for Integrated Traditional Chinese and Western Medicine.
文摘Deoxyribonucleic acid(DNA)is a double-strandedc macromoleculee composed of two antiparallel polynucleotide chains.Each chain is formed by deoxyribose and phosphate as the backbone and forms complementary base pairs through hydrogen bonds.This structure ensures the stability of DNA and enables thec precise replication of genetic information[1].In biological processes,DNA collaborates with various biomolecules,including proteins,RNAs,small molecules,lipids,and carbohydrates[2].
