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排序方式: 共有744条查询结果,搜索用时 15 毫秒
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The extent to which perceived inequity is related to perceived marital intimacy was examined. Sixty-six couples married five years or less were randomly selected from marriage license records in a western rural community. Equity/inequity was assessed using the Walster global measure of equity. Levels of overall intimacy, conflict resolution, affection, cohesion, sexuality, identity, compatibility, autonomy, and expressiveness were measured using the Waring Intimacy Questionnaire (WIQ). Inequity was associated with lower levels of overall intimacy, compatibility, identity, and expressiveness among the wives. Among the husbands, inequity was not associated with any types of intimacy. When comparing husbands in inequitable relationships to wives in inequitable relationships, the wives reported lower scores for only one kind of intimacy--identity. Explanations and implications for marriage therapy are discussed. 相似文献
4.
W J Cole P J Eppard B G Boysen K S Madsen R H Sorbet M A Miller R L Hintz T C White W E Ribelin B G Hammond 《Journal of dairy science》1992,75(1):111-123
Eighty-two lactating Holstein cows in their first, second, or third lactation received either one, three, or five concurrent i.m. injections of a unit dose (.6 g) of zinc methionyl bST (sometribove) or five doses of the vehicle. Injections were given at 14-d intervals from 60 +/- 3 d postpartum until the end of lactation or necropsy. Thirty-eight animals were continued on treatment for a 2nd yr. Sometribove did not affect the incidence of ketosis, milk fever, tetany, or pneumonia. Digestive disorders, primarily cows going off feed, were increased by bST during yr 1 only. The incidence of lameness was increased by bST in some time frames because of an increase in the 3.0-g bST group. Lameness was not associated with treatment-specific histopathologic changes or with abnormalities in cartilage or bone. Reproductive health generally was unaffected by treatment, but delayed conception and increased incidence of abortion were noted. Incidence of cystic ovaries was unaffected by bST. Pregnancy rates were decreased during the 100-d breeding interval of yr 1 but not during the 215-d interval of yr 2. The incidence of clinical mastitis was increased by bST, primarily at the 3.0-g dose. During the 2-yr study, 0, 3, 3, and 2 cows died or became moribund on 0, .6, 1.8, and 3.0 g of bST, respectively. Health issues identified for further evaluation included lameness and clinical mastitis for the 3.0-g group and early removal from the herd and decreased reproductive performance for all bST groups. Bovine somatotropin caused no treatment-specific toxic effects in dairy cows even at 3.0 g every 14 d. 相似文献
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CC Chase TA Olson AC Hammond MA Menchaca RL West DD Johnson WT Butts 《Canadian Metallurgical Quarterly》1998,76(12):2967-2975
We conducted a multiyear study in two phases to determine preweaning performance traits of Senepol (S x S), Hereford (H x H), and reciprocal (S x H and H x S) F1 crossbred calves and feedlot performance and carcass characteristics of steers. In Phase I, from 1985 to 1989, data from S x S (n = 194), H x H (n = 383), and S x H (n = 120) calves were used. Numbers of S x S cows were increased during Phase I so that data from H x S (n = 74) calves could be included in Phase II (1990 to 1992) in addition to S x S (n = 118), H x H (n = 130), and S x H (n = 56) calves. Also during Phase II, feedlot performance and carcass characteristics were determined for S x S (n = 30), H x H (n = 26), H x S (n = 36), and S x H (n = 26) steers. In Phase I, S x S calves had heavier (P < .01) birth weights and heavier (P < .01) 205-d adjusted weaning weights than H x H calves. Birth weights of S x H calves were heavier (P < .01) than the mean of the purebred calves, but 205-d adjusted weaning weights did not differ (P > .10). In phase II, direct heterosis was 3.5% for birth weight (P < .05) and 5.1% for 205-d adjusted weaning weight (P < .01). Senepol maternal breed effects were 1.9 kg for birth weight (P < .10) and 37.9 kg for 205-d adjusted weaning weight (P < .01). Levels of direct heterosis, Senepol maternal breed effects, and Hereford direct breed effects were significant for most feedlot performance traits of steer calves that were fed to a common end point. Breeds did not differ (P > .10) for USDA yield and quality grades, and direct heterosis was not significant for Warner-Bratzler shear force. These results demonstrate significant levels of heterosis in preweaning performance between S x S and H x H calves and in feedlot performance of steers. Levels of heterosis were smaller and nonsignificant for most carcass traits including meat tenderness, which did not differ between S x S and H x H steers in this study. 相似文献
7.
C. J. Brown D. Pletcher F. C. Walsh J. K. Hammond D. Robinson 《Journal of Applied Electrochemistry》1993,23(1):38-43
Measurements of the mass transport limited current for the reduction of ferricyanide in 1M m potassium hydroxide and of copper(II) in 1.5 m sulphuric acid as a function of electrolyte flow rate are used to characterize the space-averaged mass transport properties of the FM01 laboratory electrolyser, with and without six types of polymer mesh turbulence promoters. In the absence of a promoter, the results followed the equation
For the cell with the preferred turbulence promoter, the corresponding equation is
Pressure drop data are also reported and it is confirmed that the presence of a turbulence promoter need not lead to a significant increase in the pressure drop over the reactor. 相似文献
8.
Karl D. Hammond Geoffrey A. Tompsett Scott M. Auerbach W. Curtis Conner 《Journal of Porous Materials》2007,14(4):409-416
We present a non-destructive, reusable apparatus with which to measure physical adsorption isotherms of intact porous membranes.
We developed a two-piece sample container to make reliable sorption measurements of porous membranes, the properties of which
may differ from those of powders due to crystal intergrowth. This novel system employs a resealable container that can be
immersed in a cryogenic bath, into which tubular, planar, or other porous membranes and films may be placed. Detailed sorption
isotherms, including high-resolution adsorption in the low pressure (micropore-filling) region, are shown for MFI-type zeolite
membranes grown on two types and configurations of α-alumina support. 相似文献
9.
D. L. Dornbos R. E. Mullen E. G. Hammond 《Journal of the American Oil Chemists' Society》1989,66(9):1371-1373
Protein and oil content of the soybean [Glycine max (L.) Merr.] seed and the fatty acid composition of the oil can be altered by environmental stress. The objective of this
study was to characterize the composition of the phospholipid (PL) from soybean seeds after exposure to drought and high temperature
during seed fill. Drought stress was imposed on greenhouse-grown soybean plants at temperatures of 28 and 33‡C after the beginning
of seed fill and was maintained throughout the seed-fill period. The fatty acid composition of each PL class was altered by
drought and high temperature. With phosphatidylcholine and phosphatidylethanolamine, which composed 89% of the separated PL,
greater proportions of 16:0 and 18:0 and lesser proportions of 18:2 and 18:3 were present in soybean seeds exposed to high
temperature and severe drought. More linolenic acid and less palmitic acid were present in phosphatidylinositol. The changes
were comparable to those of the triglyceride because of high temperature. The elevated temperature increased the proportion
of phosphatidylcholine and phosphatidylinositol and decreased that of phosphatidylethanolamine. The effect of drought and
high temperature stress on PL class and fatty acid composition has important implications on the quality of soybean seed oil
and lecithin and on the ability of the seed to maintain optimum rates of metabolism in the development and germination environment. 相似文献
10.
To improve the economic feasibility of hydrolyzing fats and oils with moist oat caryopses, various factors affecting the efficiency
of the process were studied. Caryopses produced with an impact-type dehuller exhibited greater lipase activity than those
produced by a wringer-type dehuller. Abrasion of oat caryopses against each other in a fluidized bed released particles rich
in lipase. Such lipase concentrates could be added to moist caryopsis reactors to speed fat hydrolysis. Beef tallow, lard,
soybean oil and crambe oil were hydrolyzed more efficiently than corn oil, castor oil and milk fat. The poor hydrolysis of
castor oil was attributed to the formation of esters with the hydroxy group of ricinoleic acid, and the hydrolysis of castor
oil was increased by dilution of the substrate with hexane. Diglycerides inhibited the hydrolysis and accounted for the slower
hydrolysis of corn oil. Hydrolysis of milk fat by moist oat caryopses resulted in preferential hydrolysis of C6 to C10 acids. Erucic acid was released from crambe oil at significantly slower rates than the other acyl groups. High conversions
of fats and oils to free fatty acids could be attained by (i) exposing the fats and oils to two to three lots of moist caryopses,
(ii) the use of special oat varieties with elevated lipase content, (iii) the addition of oat lipase concentrates to moist
caryopsis reactors, and (iv) dilution of the substrate with hexane. Estimates of the cost of producing free fatty acids with
these processes indicated that the first three should be profitable. Growth ofClostridium sporogenes spores could not be demonstrated in caryopsis reactors. During the incubation of moist oat caryopses immersed in oil, the
free fatty acid content of the internal caryopsis lipid increased only slightly, but there were changes in its fatty acid
composition. 相似文献