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排序方式: 共有10000条查询结果,搜索用时 13 毫秒
971.
972.
M L Lema M del Pilar Navarro F J Mataix G Varela 《Archivos latinoamericanos de nutrición》1986,36(3):495-504
The effect of steam cooking (96 degrees C for 15 minutes) and drying at two temperatures, 70 degrees C and 110 degrees C, on nutritive value of mussel protein was studied. The measurements were carried out by nitrogen balance techniques in growing rats, and the nutritional parameters studied were: CD, BV and NPU. The crude digestibility (CD) values were: 87 +/- 1 and 82 +/- 1, and the biological values (BV), 80 +/- 1 and 74 +/- 1 for raw mussels, dried at 70 degrees C and at 110 degrees C respectively. This implies a significant decrease in the protein nutritive values of the mussel dried at a higher temperature. Cooking prior to drying significantly improved the digestibility and the biological value of the mussel's protein. In effect, improvement was so great, that the different drying temperatures did not affect the previously cooked product in a different way; therefore, the CD (94 +/- 1 and 94 +/- 1) and the BV (90 +/- 1 and 90 +/- 2) were the same for the mussel's protein, cooked and dried at 70 degrees C or at 110 degrees C. 相似文献
973.
C. A. KELLY † J. F. DEMPSTER A. J. MCLOUGHLIN‡§ 《International Journal of Food Science & Technology》1985,20(6):753-761
Lamb carcasses of > 22 kg weight were not adversely affected by spray washing, but carcasses of < 22 kg weight were affected to some extent. Characteristics of carcasses significantly affected included the appearance of the fat in the crutch region and on the back, and the degree of flaccidity and dampness of the abdominal region. These faults were alleviated somewhat during refrigerated storage and consequently the faults detected in the experiments were probably not of commercial significance since, under pilot market tests in Europe, buyers did not find any faults in spray washed carcasses. 相似文献
974.
Alfalfa was harvested in large round bales or small square bales and storage and feeding losses were determined for different storage methods. Large bales were stored 1) in a barn; 2) outside in single rows and uncovered; 3) outside in two-high stacks and covered; and 4) outside in three-high stacks and covered. These bales were fed to dairy heifers with small square bales for comparison. Dry matter storage losses were 2% for large bales stored inside, 6% for large bales stored outside covered, and 15% for large bales stored outside uncovered. Feeding losses of large bales were 12% for stored inside, 25% for stored outside uncovered, and 13 to 15% for stored outside covered. Total losses for large round bales were 40% (stored outside uncovered), 20% (stored outside covered) and 15% (stored inside). Intake and gains were greatest for small bales (2.35 kg/100 kg body weight and .77 kg/d, respectively) and least for large bales (2.11 kg/100 kg body weight and .54 kg/d) stored outside uncovered.Rain penetrated 10 to 25 cm into uncovered bales stored outside. The resulting weathered hay, about 40% of the original bale dry weight, deteriorated. Heifers rummaged through this unpalatable material, and large feeding losses resulted. Storage and feeding losses of large round bales stored outside are economically important enough to warrant protection of bales. 相似文献
975.
The effects, during formation, of current density, charge capacity, and concentration and temperature of H2SO4 electrolyte on the capacity of tubular electrodes in lead/acid batteries have been studied. Electrode capacity was found to be maximum at a H2SO4 concentration of 1.05 sp. gr., a charge amount of 250% theoretical capacity, a current density of 0.44 A dm?2, and an electrolyte temperature of 40 °C. A study of the soaking process for tubular electrodes showed the electrode capacity to be maximum when the acid absorption was about 170 mg of H2SO4 per g of oxide. Finally, the discharge overpotential of tubular electrodes was analyzed by a galvanostatic transient method. 相似文献
976.
Y. Yang B. F. Wang J. Xiong Y. Zeng Z. P. Chen X. Y. Yang 《Metallurgical and Materials Transactions A》2006,37(10):3131-3137
The microstructure and microtexture in adiabatic shear bands (ASBs) on the titanium side in the titanium/mild steel explosive
cladding interface are investigated by means of optical microscopy, scanning electron microscopy/electron backscattered diffraction
(SEM/EBSD), and transmission electron microscopy (TEM). Highly elongated subgrains and fine equiaxed grains with low dislocation
density are observed in the ASBs. Microtextures (25 deg, 75 deg, 0 deg), (70 deg, 45 deg, 0 deg), and (0 deg, 15 deg, 30 deg)
formed within the ASBs suggest the occurrence of the recrystallization. The grain boundaries within ASBs are geometrically
necessary boundaries (GNBs) with high angles. Finite element computations are performed to obtain the effective strain and
temperature distributions within the ASBs under the measured boundary conditions. The rotation dynamic recrystallization (RDR)
mechanism is employed to describe the kinetics of the nanograins’ formation and the recrystallized process within ASBs. During
the deformation time (about 5 to 10 μs), the following processes take place: dislocations accumulate to form elongated cell
structures, cell structures break up to form subgrains, and subgrains rotate and finally form recrystallized grains. The small
grains within ASBs are formed during the deformation and do not undergo significant growth by grain boundary migration after
deformation. 相似文献
977.
Koo K.P. Bucholtz F. Dagenais D.M. Dandridge A. 《Photonics Technology Letters, IEEE》1989,1(12):464-466
A compact fiber-optic magnetometer constructed using a short piece of amorphous metal wire (5-cm long×100-μm diameter) as the magnetostrictive transducer is discussed. The inherently large ratio of length to cross-sectional area results in a low demagnetization along the axial direction. A magnetostrictive constant of 5×10-5 /Oe2, which is 10-50 times larger than the reported values for transducers made from Metglas ribbons, was measured. Minimum detectable magnetic fields on the order of 10-5 Oe/Hz1/2 at 1 Hz were achieved using a 5-cm-long sensing fiber 相似文献
978.
P. F. BEEVER 《International Journal of Food Science & Technology》1985,20(5):637-645
Recent reports in the literature indicate that incidents involving fires and explosions in the spray drying of milk products are increasing in number. Whilst milk powder is not highly explosible, the conditions for a dust explosion, apart from the ignition source are almost always present in certain areas of a spray dryer during its normal operation. Self-ignition of deposits is known to be possible at the high temperatures in a spray dryer. At best, this can cause product degradation and discolouration whilst at worst it can provide the source of ignition for an explosion. This paper is an attempt to draw together recent work on fire and explosion prevention and protection formilk powders. 相似文献
979.
Process Variables, Gelatinized Starch and Moisture Effects on Physical Properties of Mungbean Noodles 总被引:2,自引:0,他引:2
The effects of amounts of gelatinized starch and moisture in the final slurry or dough, cooking time, holding time, and holding temperature on physical properties of mungbean noodles were studied. Cooking loss, cutting stress, work to cut, and transparency of noodles were measured. Moisture content of the final slurry or dough, cooking time, and holding temperature were the most important factors that affected physical properties of mungbean noodles. Processing should be done at moisture contents not exceeding 55%, cooking times not longer than 40 set, and holding temperatures not lower than 3° using 5% of total starch as gelatinized starch and holding time of 36 hr. 相似文献
980.
A.J. MILLER F.J. SCHULTZ A. OSER J.L. HALLMAN S.A. PALUMBO 《Journal of food science》1994,59(4):739-741
Swine carcass microflora were evaluated for selected foodborne pathogens after exposure to reconditioned water during scalding, dehairing, and polishing operations. Reused water had been reconditioned and chlorinated. Rodac plates applied to hams were used to assess carcass microflora. Water samples were enumerated using membrane filtration or spiral plating. Sampling was at mid-week throughout the year. Total aerobic plate counts on hams were unaffected by treating with potable or reconditioned waters. No differences were observed for staphylococci, enterics, fecal streptococci, Listeria monocytogenes, coliforms, and Aeromonas levels. A preevisceration potable water carcass wash reduced the bacterial load, regardless of initial treatment. Bacterial counts on carcasses paralleled those in water. Reuse is an alternative to potable water for initial slaughter operations without diminishing bacteriologic safety. 相似文献