筛

Objective To develop a kind of preliminary screening acoumeter for the prevention of noise-induced hearing loss. Methods This portable preliminary screening acoumeter based on ARM7 LPC2148+SD card+VS1003 can make anti-noise hearing protection.

目的 研制强噪声引起听力损伤预防和快速初筛仪，能预防强噪声给人员带来的听力损伤，并能实施听力损伤的快速筛查。

This paper introduced the odd sieve sequence, the methods of character, estimate and triangle sum are used to study the mean value of the divisor function. An asymptotic formula of the divisor function is gave in the odd sieve sequence set to through the analytical method.

引入了奇筛数序列，主要利用特征和估计及三角和方法，研究了除数函数的均值性质，并通过解析方法给出了除数函数在奇筛数序列集合中的一个的渐近公式。

F. Insufficient frequency of previous screening (eg, failure to be screened at least biennially).

f。之前的筛查不足（如没有至少2年筛查一次）。

This equipment is designed for characteristic of the impurity in the recycled paper pulp inder to promote the flowing type structure, can apply various kinds of abolish screen , precise sift screening , thick liquid of material before the paper machine of paper pulp extensively, having incomparable good working performance dependability, it is various kinds of domestic pressures that are sifted used in the recycled thick liquid the products dealt with.

该设备针对再生纸浆中杂质的特性设计为升流式结构，可广泛应用于各种废纸浆的粗筛、精筛及纸机前浆料的筛选，具有无可比拟的良好工作性能和可靠性，是各种国产压力筛用于再生浆处理的更新换代产品。

In this study, as a original strain, antagonistic bacterium Ata28 was mutated by UV, UV+LiCl, DES and Microwave irradiation; the very goal of the research is to improve the control efficiency of Ata28 strain against tobacco brown spot and obtain strains advanced both in antagonism and biological characteristics, further provides theoretics and practical experience to the production.

采用紫外线和氯化锂复合诱变Ata28菌株，通过预备实验，计算Ata28菌株在不同诱变时间的致死率和正变率，选择该菌株的最佳诱变时间10s，15s诱变；通过平板对峙培养，筛选出8个突变菌株在PDA平板上可明显抑制Tbs3的生长，抑菌带高于出发菌株Ata28，抑菌带最大值达9.7mm；经温室控病初筛和复筛试验，获得了对烟草赤星病有较好防效的突变菌株Uv1-190、Uv1-199，烟苗经Uv1-190、Uv1-199菌液处理3d后，接种Tbs3的防治效果达51.3％、54.9％，比出发菌株Ata28的防治效果好。

Ata28 strain was mutated by UV with the most optimum mutant time, including 10, 20, 30s, that was chosen by the trial tests, considering the lethality rate and positive mutation rate of Ata28; it was found that 15 mutant strains were shown antagonism against Tbs3 strain by antagonism test on PDA plate, inhibition zone of mutant strains exceeded the original strain Ata28, and the maximum of inhibition zone reached 9.4mm; the mutant strain Uv-126 was found most effective in tobacco brown spot control and a rate of efficiency control reached 52.2% on tobacco plants three days after bacteria spraying.

采用硫酸二已酯诱变Ata28菌株，通过预备实验，计算Ata28菌株在不同诱变时间的致死率和正变率，选择该菌株的最佳诱变时间20min，40min，60min诱变；通过平板对峙培养，筛选出17个突变菌株在PDA平板上可明显抑制Tbs3的生长，抑菌带高于出发菌株Am28，抑菌带最大值达10.5 mm；经温室控病初筛和复筛试验，获得了对烟草赤星病有较好防效的突变菌株Des-66、Des-50，烟苗经Des-66、Des-50菌液处理3d后，接种Tbs3的防治效果达52.0％、56.6％，比出发菌株Ata28的防治效果好。

Deodorizer cans, detreated cans, refining cans, off soap mixer machine than the allocation, heating cans, dehydrated machine, stripping 28-36 Shell machine, round screen, vibrating screen, flat screen, crusher, go stone machine, steam offline, reducer, various condensers, legislative twisted cage, flat cutter cage, hoist, etc.,15-150 tons of oil extraction plant , castor oil equipment.

脱臭罐、脱色罐、精炼罐、脱皂机比配混合机、加热罐、脱水机、 28-36剥壳机、圆筛、振动筛、平筛、破碎机、去石机、蒸脱机、减速机、各种冷凝器、立绞笼、平绞笼、提升机等，15-150吨浸出油车间、蓖麻油设备。

This paper experimentally studied smash characteristic of com straw, including mainly performance parameter of pulverizer such as consumption of electricity per ton, hour productivity and hammer patch thick under the condition of different moisture rates and sieve pore diameter .

本文主要对不同含水率、筛孔直径下粉碎机的吨料电耗、小时生产率及锤片厚度等性能参数进行了玉米秸秆粉碎特性试验研究，结果表明：对于相同筛孔直径，随着含水率的增大，负荷输入功率基本不变，吨料电耗增加，生产率降低；对于相同含水率的玉米秸秆，随着筛孔直径的增大，吨料电耗、负荷输入功率降低，小时生产率增加；度电产量和粉碎效率随着锤片厚度的减薄而增加，当锤片厚度为4mm时，既能够保持较高的粉碎效率，又保证了一定的耐用度。

The optimized sieve parameters reduce the vertical amplitude of the sieve backend, making the grains go easily through the sieve pores to be separated, and consequently help to reduce the grain loss rate and impurity rate.

优化后得到了较优的振动筛参数，有利于减小振动筛后端的垂直振幅，使得谷粒更容易穿过筛孔完成分离，有利于减小损失率和含杂率。

At the same time with warehousing, food processing equipment manufacturers: vibration sieve clean-up campaign to stone-series, series of Yarlung Valley, Valley roughness separation Screen series, all kinds of sand roll, iron rollers and dual-use iron Milling Machine series, grade rice sieve Series, Nissan 20 T-150T of large, medium and small-series sets Milling equipment.

同时具备仓储、粮食加工设备制造：振动清理筛系列、去石机系列、砻谷机系列、谷糙分离筛系列、各类砂辊、铁辊和铁砂两用碾米机系列、白米分级筛系列、日产20T-150T的大、中、小型系列多功能成套碾米设备。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。