摘要:
The present invention relates to a method of producing carbamoyl phosphate, the method comprising reacting ammonia, ATP, bicarbonate and CO2, or a hydrated form thereof, in a composition in the presence of a carbamate kinase, wherein the ammonia and CO2, or hydrated form thereof, are converted to carbamate in a chemical reaction and the carbamate and ATP are converted to carbamoyl phosphate in an enzyme-catalysed reaction by the carbamate kinase, and wherein the pH of the composition is about 8 to about 12. The invention also relates to methods of producing urea.
摘要:
The present invention relates to polypeptides for degrading s-triazines such as atrazine, as well as diazines. Also provided are polynucleotides encoding these polypeptides. The present invention also relates to the use of these polynucleotides and polypeptides in the bioremediation of s-triazines and diazines.
摘要:
The present invention relates to enzymes which are able to hydrolyse phenylureas, carbamates, and/or organophosphates, as well as polynucleotides encoding these enzymes. The present invention also relates to methods of hydrolysing phenylureas, carbamates, and/or organophosphates.
摘要:
Steel sheet, the composition of the steel of which comprises, the contents being expressed by weight: 0.08%≦C≦0.23%, 1%≦Mn≦2%, 1≦Si≦2%, Al≦0.030%, 0.1%≦V≦0.25%, Ti≦0.010%, S≦0.015%, P≦0.1%, 0.004%≦N≦0.012%, and, optionally, one or more elements chosen from: Nb≦0.1%, Mo≦0.5%, Cr≦0.3%, the balance of the composition consisting of iron and inevitable impurities resulting from the smelting.
摘要:
The invention relates to a hot rolled sheet which is made from austenitic iron/carbon/manganese steel and which has a resistance of greater than 900 MPa, whereby: resistance (MPa) x elongation at rupture (%) is greater than 45000. The chemical composition of the inventive sheet comprises the following concentrations expressed as weight: 0.5%=C=0.7%, 17%=Mn=24%, Si=3%, Al=0.05%, S=0.03%, P=0.08%, N=0.1% and, optionally, one or more elements such as Cr=1%, Mo=0.4%, Ni=1%, Ti=0.5%, Nb=0.5%, V=0.5%, Cu=5%, Cu=5%, the rest of the composition comprising iron and impurities resulting from production. According to the invention, the recrystallised fraction of the steel is greater than 75% and the surface fraction of precipitated carbides of the steel is less than 1.5%, the average grain size of the steel being less than 18 micrometers.
摘要:
Iron-carbon-manganese austenitic steel sheet, the chemical composition of which comprises, the contents being expressed by weight: 0.45%≦C≦0.75%; 15%≦Mn≦26%; Si≦3%; Al≦0.050%; S≦0.030%; P≦0.080%; N≦0.1%; at least one metal element chosen from vanadium, titanium, niobium, chromium and molybdenum, where 0.050%≦V≦0.50%; 0.040%≦Ti≦0.50; 0.070%≦Nb≦0.50%; 0.070%≦Cr≦2%; 0.14%≦Mo≦2%; and, optionally, one or more elements chosen from 0.0005%≦B≦0.003%; Ni≦1%; Cu≦5%, the balance of the composition consisting of iron and inevitable impurities resulting from the smelting, the amounts of said at least one metal element in the form of precipitated carbides, nitrides or carbonitrides being: 0.030%≦Vp≦0.150%; 0.030%≦Tip≦0.130%; 0.040%≦Nbp≦0.220%; 0.070%≦Crp≦0.6%; 0.14%≦Mop≦0.44%.
摘要:
A hot-rolled austenitic iron/carbon/manganese steel sheet, the strength of which is greater than 1200 MPa, the product P (strength (in MPa)×elongation at break (in %)) of which is greater than 65 000 MPa % and the nominal chemical composition of which comprises, the contents being expressed by weight: 0.85%≦C≦1.05%; 16%≦Mn≦19%; Si≦2%; Al≦0.050%; S≦0.030%; P≦0.050%; N≦0.1%, and, optionally, one or more elements chosen from: Cr≦1%; Mo≦0.40%; Ni≦1%; Cu≦5%; Ti≦0.50%; Nb≦0.50%; V≦0.50%, the rest of the composition consisting of iron and inevitable impurities resulting from the smelting, the recrystallized surface fraction of said steel being equal to 100%, the surface fraction of precipitated carbides of said steel being equal to 0% and the mean grain size of said steel being less than or equal to 10 microns.
摘要翻译:其强度大于1200MPa的热轧奥氏体铁/碳/锰钢板,产品P(强度(MPa)断裂次数(%))大于65000MPa%, 其标称化学成分包含,其含量以重量表示:0.85%<= C <= 1.05%; 16%<= Mn <= 19%; Si <= 2%; Al <= 0.050%; S <= 0.030%; P <= 0.050%; N <= 0.1%,以及任选的一种或多种选自:Cr <= 1%的元素; Mo <= 0.40%; Ni <= 1%; Cu <= 5%; Ti <= 0.50%; Nb <= 0.50%; V <= 0.50%,剩余的组成由铁和不可避免的冶炼杂质组成,所述钢的再结晶表面部分等于100%,所述钢的沉淀碳化物的表面分数等于0%, 所述钢的平均晶粒尺寸小于或等于10微米。
摘要:
The invention relates to a hot rolled sheet which is made from austenitic iron/carbon/manganese steel and which has a resistance of greater than 900 MPa, whereby: resistance (MPa) x elongation at rupture (%) is greater than 45000. The chemical composition of the inventive sheet comprises the following concentrations expressed as weight: 0.5%=C=0.7%, 17%=Mn=24%, Si=3%, Al=0.05%, S=0.03%, P=0.08%, N=0.1% and, optionally, one or more elements such as Cr=1%, Mo=0.4%, Ni=1%, Ti=0.5%, Nb=0.5%, V=0.5%, Cu=5%, Cu=5%, the rest of the composition comprising iron and impurities resulting from production. According to the invention, the recrystallised fraction of the steel is greater than 75% and the surface fraction of precipitated carbides of the steel is less than 1.5%, the average grain size of the steel being less than 18 micrometers.
摘要:
Hot-rolled or cold-rolled steel plate, method for manufacturing same and use thereof in the automotive industryA hot-rolled or cold-rolled steel plate, characterized in that its composition is in weight percentages: 0.6%≦C≦0.9%; 17%≦Mn≦22%; 0.2%≦Al≦0.9%; 0.2%≦Si≦1.1% with 0.85%≦Al+Si≦1.9%; 1.2%≦Cu≦1.9%; S≦0.030%; P≦0.080%; N≦0.1%; optionally: Nb≦0.25% and preferably comprised between 0.070 and 0.25%; V≦0.5% and preferably comprised between 0.050 and 0.5%; Ti≦0.5%, and preferably comprised between 0.040 and 0.5%; Ni≦2%; trace amounts Cr≦2%, preferably≦1%; B≦0.010%, and preferably, comprised between 0.0005% and 0.010%; the remainder being iron and impurities resulting from the production.A method for manufacturing this plate, the use of this plate in the automotive industry.
摘要翻译:热轧或冷轧钢板,其制造方法及其在汽车工业中的应用热轧或冷轧钢板的特征在于其组成为重量百分比:0.6%@ C @ 0.9%; 17%@ Mn @ 22%; 0.2%@ Al @ 0.9%; 0.2%@ Si @ 1.1%,0.85%@ Al + Si @ 1.9%; 1.2%@ Cu @ 1.9%; S@0.030%; P@0.080%; N@0.1%; 可选地:Nb @ 0.025%,优选在0.070和0.25%之间; 优选为0.050〜0.5%; Ti @ 0.5%,优选为0.040〜0.5%。 Ni @ 2%; 微量Cr 2%,优选1%; B≤0.010%,优选为0.0005〜0.010%。 其余的是由生产产生的铁和杂质。 制造该板的方法,在汽车工业中使用该板。