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41. PROPERTIES OF SILK FIBROIN/POLY(ETHYLENE GLYCOL)400 BLEND FILMS [12%]
...er the immersion for3 days.FTIR spectra were obtained using a Perkin-Elmer 2000 spectrometer in the spectral region of 2000-400 cm^'. X-ray diffaction patterns were obtained with a D/max -2400 Diffractometer, and CuKa radiation with awavelength of 0.154 nm. Thermogravimetric analysis (TGA) was run u...
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2020-12-22 21:24:13
42. 后石油时代就在眼前 [12%]
...是在正确评性消费、节约用油，发展石油替代能源也可以控制价潜在资源的基础上，预测石油产量的杰出科学家。石油消需的不断增长。显然要准确预测世界石油产1901年世界进入石油时代以来，世界石油产量- -直量何时到达高...
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2020-12-22 21:24:13
43. 添加剂对罐装绿茶水品质的影响 [12%]
...体系不稳定，易产生褐变。程建军等在研究加仑饮料褐变控制时也证明，焦磷酸中国煤化工盐对其花青素有较好的保护作用，而达到护色效果!9。5HC N M H Gtofascorbic acid on geenteaβ -环糊精在饮料业中,大多作为包埋剂应用。在.calechin...
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2020-12-22 21:24:13
44. 蚯蚓饲料添加剂在养禽业中的应用 [12%]
...酸酶、酯酶、卟啉合成尸解现象,必须快速晒千，以严格控制扳机酶(尸解酶、植酸酶等叫。蚯蚓中还含有蚯蚓素、蚯蚓解热碱、酶)的启动，否则重量会减轻而受损失。蚯蚓毒和嘌呤、胆碱、胆甾醇、蚯蚓毒素、蚯蚓磷脂、3.2蚯蚓...
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2020-12-22 21:24:13
45. 泵类故障大汇总，关键时刻助你一臂之力！ [12%]
...     故障分析： 地脚螺栓松动或底座焊接不合格； 泵发生流蚀（流量过大，吸入阻力增加或液体操作温度过高）； 泵发生喘振（系统净扬程压力高于泵关死压力） 叶轮损坏或有异物。   ...
技术发展
2020-12-22 21:24:13
46. THE STRUCTURE AND PROPERTIES OF CHITOSAN/PPLYETHYLENE GLYCOL/SILICA TERNARY HYBRID ORGANIC-NORGANIC [12%]
...ould be also corroborated from the aboveOM resuts (Fig. 2).PR0-1，:AA1800 1600 1400 12001000Wavenumber (cm~)Fig.4 ATR-Infrared spectra for surface of flms for CPRO samplesIn each pair, top: annealed; bottom: non-annealed1466 cm~'1131 cm:;rM1360 cm:!281 cm~'M962 cm~1241 cm\; 842 cmCSCPRl-I~CPR2-1(CP...
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2020-12-22 21:24:13
47. Poly(L-lactide)-Poly(ethylene glycol) Multiblock Copolymers: Synthesis and Properties [11%]
...ymerMw*/103Mn*/10Mw/Mn*PLLA/PEG'[η]PLA 1000 - PEG 60014.311.031.040.28PLA 2000 - PEG 60027.418.11.50.950.48PLA 3000 - PEG 60030.720.3.51.000.50PLA 1000 - PEG 20003.20.860.33PLA 2000 - PEG 200016.711.30.45PLA 3000 - PEG 20001.080.38"Determined by GPC measurement.”Molar ratio of the two component s...
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2020-12-22 21:24:13
48. 大功率LED灯的散热性能分析 [11%]
...翅片高度在这一范围内时，芯片温度波动比较大，因此应控制翅片的高度范围，以获取更高的芯片散热性能。此外在翅片长度方面，在0.03-0.12m范围内最适宜，这也是当前大功率LED等翅片长度的首选。另一方面，缺口、通孔是LED...
技术发展
2020-12-22 21:24:13
49. 生物活性添加剂在鱼、虾、蟹等饲料中的应用效果 [11%]
2000 Aeμ012 FEUECAIND%i3EuTT>TDO i T40vA0U0a jd°jθ-μEECATODμA0:0ADS1Q3A>ATy 2i0AIe 9UE ->C%-EOEiμ←E@E@2uND4εEu00 EUTT》 iD0i 140%AEC "0qTa00 iliE>O2Tr9OD2YOCODE. ,N; iaEiμAEA01a, β1 ημAAa0B1 |A0E24BODi12j-A2j%°U%k@Eu3x=0A&pE+UAa0@Tr2DA69i9%4. +x=0Aj200aT9i8- i&x0aECAT0D140 0.2% >DOVA&...
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2020-12-22 21:24:13
50. DIBUTYLTIN DILAURATE-CATALYZED DIISOCYANATE COUPLING- GRAFTING OF POLY(ETHYLENE GLYCOL) ONTO NANO-SI [11%]
... specific area of 160 m2/g. PEG with various molecular weights (400, 1000, 2000 and 6000) wereobtained from T.T.R.C (China). Both silica and PEG were dried in vacum oven at 110°C for 7 h before use.TDI (80/20 mixture of 2,4- and 2,6-isomers) and dibutyltin dilaurate (DBTDL) were used as received. T...
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2020-12-22 21:24:13