MALDI-TOF-MS technology was used for identification of lipopeptide antibiotics producedby GEB3 strain, a derivative of Bacillus subtilis 168 which was transformed by lpaB3gene. The result showed GEB3 only produced lip...MALDI-TOF-MS technology was used for identification of lipopeptide antibiotics producedby GEB3 strain, a derivative of Bacillus subtilis 168 which was transformed by lpaB3gene. The result showed GEB3 only produced lipopeptide antibiotic surfactin. The analysisby LC-MS demonstrated that GEB3 produced standard surfactin isoforms with side chainlengths of 13,14 and 15 carbon atoms. The bioactivity detection of surfactin indicatedthat the surfactin produced by GEB3 had inhibition effect on plant pathogens Rhizoctoniasolani and Pyricularia oryzae.展开更多
Herein,two new acentric borogermanates,namely,Ca_(2)GeB_(2)O_(7) and Ca_(1.78)Cd_(0.22)GeB_(2)O_(7),were obtained by combining BO4 with a GeO4 tetrahedron.The structures of the isomeric Ca_(2)GeB_(2)O_(7) and Ca_(1.78...Herein,two new acentric borogermanates,namely,Ca_(2)GeB_(2)O_(7) and Ca_(1.78)Cd_(0.22)GeB_(2)O_(7),were obtained by combining BO4 with a GeO4 tetrahedron.The structures of the isomeric Ca_(2)GeB_(2)O_(7) and Ca_(1.78)Cd_(0.22)GeB_(2)O_(7) feature two-dimensional(2D)[GeB2O7]layers parallel to the ab plane in which a GeO4 tetrahedron corner is shared with four[B2O7]units;the divalent cations are filled in between layers.Ca_(2)GeB_(2)O_(7) and Ca_(1.78)Cd_(0.22)GeB_(2)O_(7) display second-harmonic generation(SHG)intensity around 0.4 and 0.6 times that of KH2PO4(KDP),respectively.Ca_(2)GeB_(2)O_(7) possesses a short UV absorption edge(about 194 nm).Thermal stability measurements show that Ca_(2)GeB_(2)O_(7) melts congruently at high temperatures,whereas Ca_(1.78)Cd_(0.22)GeB_(2)O_(7) melts incongruently and becomes amorphous at high temperatures.Moreover,measurements of the optical properties as well as theoretical calculations of these two compounds were conducted.展开更多
ChiNext,China’s NASDAQ-style growth enterprise board(GEB),is now 7 years old since its launch on October 30,2009.The GEB’s achievements are obvious to all,but there are also problems that need to be solved.The GEB h...ChiNext,China’s NASDAQ-style growth enterprise board(GEB),is now 7 years old since its launch on October 30,2009.The GEB’s achievements are obvious to all,but there are also problems that need to be solved.The GEB has the biggest problems throughout the A-share market,at least in the following three aspects:展开更多
This paper analyzes North American shifts in renewable energy finance and building energy technologies from 2022 to 2025.Fueled by net-zero targets and policy incentives,clean energy investment now surpasses fossil fu...This paper analyzes North American shifts in renewable energy finance and building energy technologies from 2022 to 2025.Fueled by net-zero targets and policy incentives,clean energy investment now surpasses fossil fuel spending.We examine key financial tools—green bonds,corporate power purchase agreements(PPAs),public-private partnerships,and tax credits—and parallel advances in smart meters,grid-interactive efficient buildings,battery storage,heat pumps,and net-zero construction.Through case studies of municipal retrofit financing,integrated smart homes,and net-zero campuses,we illustrate emerging finance-technology-policy ecosystems poised to accelerate the energy transition and bolster climate resilience.展开更多
In this paper, it is proved that linear combination 2·f(O)?- f(H) of elemental balances: f(O) for O and f(H) for H is linearly independent on charge and elemental/core balances for all redox systems of any degree...In this paper, it is proved that linear combination 2·f(O)?- f(H) of elemental balances: f(O) for O and f(H) for H is linearly independent on charge and elemental/core balances for all redox systems of any degree of complexity;it is the primary form of the Generalized Electron Balance (GEB), , considered as the Approach II to GEB. The Approach II is equivalent to the Approach I based on the principle of common pool of electrons. Both Approaches are illustrated on an example of titration of acidified (H2SO4) solution of H2C2O4 with KMnO4. It is also stated, on an example of titration of the same solution with NaOH, that 2·f(O)?- f(H) is a linear combination of charge and elemental/core balances, i.e. it is not an independent balance when related to the non-redox system. These properties of 2·f(O)?- f(H) can be extended on redox and non-redox systems, of any degree of complexity, i.e. the linear independency/dependency of 2·f(O)?- f(H) on other balances related to a system in question is a criterion distinguishing redox and non-redox systems. The GEB completes the set of (charge and concentration) balances and a set of expressions for independent equilibrium constants needed for modeling the related redox system.展开更多
基金supported by the National Nature1 Science Foundation of China(30170623)the National 863 Program of China(2001AA246013).
文摘MALDI-TOF-MS technology was used for identification of lipopeptide antibiotics producedby GEB3 strain, a derivative of Bacillus subtilis 168 which was transformed by lpaB3gene. The result showed GEB3 only produced lipopeptide antibiotic surfactin. The analysisby LC-MS demonstrated that GEB3 produced standard surfactin isoforms with side chainlengths of 13,14 and 15 carbon atoms. The bioactivity detection of surfactin indicatedthat the surfactin produced by GEB3 had inhibition effect on plant pathogens Rhizoctoniasolani and Pyricularia oryzae.
基金supported by the National Natural Science Foundation of China(No.21875248,91622112,and 21701173)the Strategic Priority Research Program of the Chinese Academy of Sciences(XDB20000000)the 100 Talents Project of Fujian Province.
文摘Herein,two new acentric borogermanates,namely,Ca_(2)GeB_(2)O_(7) and Ca_(1.78)Cd_(0.22)GeB_(2)O_(7),were obtained by combining BO4 with a GeO4 tetrahedron.The structures of the isomeric Ca_(2)GeB_(2)O_(7) and Ca_(1.78)Cd_(0.22)GeB_(2)O_(7) feature two-dimensional(2D)[GeB2O7]layers parallel to the ab plane in which a GeO4 tetrahedron corner is shared with four[B2O7]units;the divalent cations are filled in between layers.Ca_(2)GeB_(2)O_(7) and Ca_(1.78)Cd_(0.22)GeB_(2)O_(7) display second-harmonic generation(SHG)intensity around 0.4 and 0.6 times that of KH2PO4(KDP),respectively.Ca_(2)GeB_(2)O_(7) possesses a short UV absorption edge(about 194 nm).Thermal stability measurements show that Ca_(2)GeB_(2)O_(7) melts congruently at high temperatures,whereas Ca_(1.78)Cd_(0.22)GeB_(2)O_(7) melts incongruently and becomes amorphous at high temperatures.Moreover,measurements of the optical properties as well as theoretical calculations of these two compounds were conducted.
文摘ChiNext,China’s NASDAQ-style growth enterprise board(GEB),is now 7 years old since its launch on October 30,2009.The GEB’s achievements are obvious to all,but there are also problems that need to be solved.The GEB has the biggest problems throughout the A-share market,at least in the following three aspects:
文摘This paper analyzes North American shifts in renewable energy finance and building energy technologies from 2022 to 2025.Fueled by net-zero targets and policy incentives,clean energy investment now surpasses fossil fuel spending.We examine key financial tools—green bonds,corporate power purchase agreements(PPAs),public-private partnerships,and tax credits—and parallel advances in smart meters,grid-interactive efficient buildings,battery storage,heat pumps,and net-zero construction.Through case studies of municipal retrofit financing,integrated smart homes,and net-zero campuses,we illustrate emerging finance-technology-policy ecosystems poised to accelerate the energy transition and bolster climate resilience.
文摘In this paper, it is proved that linear combination 2·f(O)?- f(H) of elemental balances: f(O) for O and f(H) for H is linearly independent on charge and elemental/core balances for all redox systems of any degree of complexity;it is the primary form of the Generalized Electron Balance (GEB), , considered as the Approach II to GEB. The Approach II is equivalent to the Approach I based on the principle of common pool of electrons. Both Approaches are illustrated on an example of titration of acidified (H2SO4) solution of H2C2O4 with KMnO4. It is also stated, on an example of titration of the same solution with NaOH, that 2·f(O)?- f(H) is a linear combination of charge and elemental/core balances, i.e. it is not an independent balance when related to the non-redox system. These properties of 2·f(O)?- f(H) can be extended on redox and non-redox systems, of any degree of complexity, i.e. the linear independency/dependency of 2·f(O)?- f(H) on other balances related to a system in question is a criterion distinguishing redox and non-redox systems. The GEB completes the set of (charge and concentration) balances and a set of expressions for independent equilibrium constants needed for modeling the related redox system.
