The phenyl and methyl phenyl free radicals,formed in the oxidation-hydrolysis process of N’-acyl-N-phenylhydrazine, have been studied by ESR spectrometry.It was found that the free radical is the chief cause which pr...The phenyl and methyl phenyl free radicals,formed in the oxidation-hydrolysis process of N’-acyl-N-phenylhydrazine, have been studied by ESR spectrometry.It was found that the free radical is the chief cause which produces the feed-back inhibition effect in the hydrazine-promoted infectious development of silver halide.展开更多
The differential equation, obtained as a result of the theoretical study of the movement of the bare seed on the surface of the grate of the saw gin, made it possible to determine the trajectory of the movement of the...The differential equation, obtained as a result of the theoretical study of the movement of the bare seed on the surface of the grate of the saw gin, made it possible to determine the trajectory of the movement of the seed. The rib is one of the main working bodies of the saw gin. It serves for the free passage of the saw blades through it into the working chamber, for the withdrawal of the fiber caught on the saw teeth after separating it from the seed. A number of studies have been carried out to improve the working elements of the saw gin. The purpose of the research is to create the possibility of timely withdrawal of bare seeds from the working chamber of the saw gin by creating a concavity on the working surface of the grate. The use of the Euler equation for the movement of bare cotton seed along the grate contour, taking into account its speed V, density ρ, pressure P, made it possible to obtain a graph of seed distribution along the grate contour. An experimental 30-saw gin was developed and manufactured, the research carried out on it allowed to determine the rational parameters of new grates, which are recommended for introduction into production. The dependence of the location of the rectilinear part of the general contour on the shape of its convexity and concavity is determined. Based on the above equations, using separate functions, we present the view of the grate profile in the coordinate system modeled on the MAPLE-17 program.展开更多
The article consists of studying the influence of the speed of the saw cylinder on the quality of the fiber and the productivity of the machine, as well as on the change in the density and composition of the seed roll.
This study aimed to evaluate the performance and potential of development local sheep in sub-district Kaliangkrik. Respondents were taken from sheep farmers in the village Munggangsari and Wonocoyo with the number of ...This study aimed to evaluate the performance and potential of development local sheep in sub-district Kaliangkrik. Respondents were taken from sheep farmers in the village Munggangsari and Wonocoyo with the number of livestock ownership of at least two tails. This study used a survey method, with sampling of respondents in the census. The results showed the average number of sheep ownership as much as 0.47 animal units （AU） with a range of 0.14 AU to 1.15 AU. The largest population structure is lamb （25.66%）, ewe （23.03%）, ram （18.61%）, ram lamb （16.92%） and ewe lamb （15.79%）. Sex ratio of ram： ewe is 1：1.5 for adult sheep and 1：1.2 for lambs. Weight of ram is 26.75 kg and ewes 26.37 kg; weight of male lamb is 8.42 kg, with average daily gain （ADG） 48.11 g/head/day, while the female lamb 6.61 kg with ADG 44.13 g/head/day. The average sheep lambing interval was 8.4 months, with an average litter size of 1.3 tails. Based on the calculation of the adequacy of feed, the obtained level of sufficiency （feed production ratio and feed requirement） is 1.89, which means the area has adequate feed production. It was concluded that sheep productivity was good enough and potentially to be developed in Kaliangkrik region.展开更多
文摘The phenyl and methyl phenyl free radicals,formed in the oxidation-hydrolysis process of N’-acyl-N-phenylhydrazine, have been studied by ESR spectrometry.It was found that the free radical is the chief cause which produces the feed-back inhibition effect in the hydrazine-promoted infectious development of silver halide.
文摘The differential equation, obtained as a result of the theoretical study of the movement of the bare seed on the surface of the grate of the saw gin, made it possible to determine the trajectory of the movement of the seed. The rib is one of the main working bodies of the saw gin. It serves for the free passage of the saw blades through it into the working chamber, for the withdrawal of the fiber caught on the saw teeth after separating it from the seed. A number of studies have been carried out to improve the working elements of the saw gin. The purpose of the research is to create the possibility of timely withdrawal of bare seeds from the working chamber of the saw gin by creating a concavity on the working surface of the grate. The use of the Euler equation for the movement of bare cotton seed along the grate contour, taking into account its speed V, density ρ, pressure P, made it possible to obtain a graph of seed distribution along the grate contour. An experimental 30-saw gin was developed and manufactured, the research carried out on it allowed to determine the rational parameters of new grates, which are recommended for introduction into production. The dependence of the location of the rectilinear part of the general contour on the shape of its convexity and concavity is determined. Based on the above equations, using separate functions, we present the view of the grate profile in the coordinate system modeled on the MAPLE-17 program.
文摘The article consists of studying the influence of the speed of the saw cylinder on the quality of the fiber and the productivity of the machine, as well as on the change in the density and composition of the seed roll.
文摘This study aimed to evaluate the performance and potential of development local sheep in sub-district Kaliangkrik. Respondents were taken from sheep farmers in the village Munggangsari and Wonocoyo with the number of livestock ownership of at least two tails. This study used a survey method, with sampling of respondents in the census. The results showed the average number of sheep ownership as much as 0.47 animal units （AU） with a range of 0.14 AU to 1.15 AU. The largest population structure is lamb （25.66%）, ewe （23.03%）, ram （18.61%）, ram lamb （16.92%） and ewe lamb （15.79%）. Sex ratio of ram： ewe is 1：1.5 for adult sheep and 1：1.2 for lambs. Weight of ram is 26.75 kg and ewes 26.37 kg; weight of male lamb is 8.42 kg, with average daily gain （ADG） 48.11 g/head/day, while the female lamb 6.61 kg with ADG 44.13 g/head/day. The average sheep lambing interval was 8.4 months, with an average litter size of 1.3 tails. Based on the calculation of the adequacy of feed, the obtained level of sufficiency （feed production ratio and feed requirement） is 1.89, which means the area has adequate feed production. It was concluded that sheep productivity was good enough and potentially to be developed in Kaliangkrik region.
