全文获取类型
收费全文 | 226篇 |
免费 | 20篇 |
专业分类
林业 | 21篇 |
农学 | 3篇 |
基础科学 | 1篇 |
20篇 | |
综合类 | 20篇 |
农作物 | 6篇 |
水产渔业 | 37篇 |
畜牧兽医 | 129篇 |
植物保护 | 9篇 |
出版年
2021年 | 4篇 |
2020年 | 4篇 |
2019年 | 2篇 |
2018年 | 2篇 |
2017年 | 6篇 |
2016年 | 10篇 |
2015年 | 8篇 |
2014年 | 6篇 |
2013年 | 13篇 |
2012年 | 14篇 |
2011年 | 18篇 |
2010年 | 8篇 |
2009年 | 5篇 |
2008年 | 16篇 |
2007年 | 13篇 |
2006年 | 12篇 |
2005年 | 12篇 |
2004年 | 14篇 |
2003年 | 9篇 |
2002年 | 7篇 |
2001年 | 13篇 |
2000年 | 12篇 |
1999年 | 3篇 |
1998年 | 3篇 |
1996年 | 3篇 |
1995年 | 1篇 |
1992年 | 4篇 |
1991年 | 3篇 |
1990年 | 4篇 |
1989年 | 5篇 |
1988年 | 2篇 |
1987年 | 1篇 |
1986年 | 2篇 |
1985年 | 4篇 |
1981年 | 2篇 |
1972年 | 1篇 |
排序方式: 共有246条查询结果,搜索用时 15 毫秒
181.
H Naoi B Agung NWK Karja P Wongsrikeao R Shimizu M Taniguchi T Otoi 《Reproduction in domestic animals》2008,43(2):157-161
This study was conducted to examine the effects of the reproductive cycle of donor cat on the quality of oocytes at recovery and developmental competence of oocytes after in vitro fertilization (IVF) and somatic cell nuclear transfer (NT). Based on the presence or absence of follicles and corpora lutea, the ovarian pairs collected were classified into inactive, follicular or luteal stages. After collection of oocytes, the oocytes were classified into four grades according to the morphological condition of oocyte cytoplasm and cumulus cells. A total of 16 558 oocytes were obtained from 198 ovarian pairs. The total mean numbers of oocytes and the mean numbers of oocytes with high quality (grade I) were significantly higher in ovarian pairs at the inactive stage (111.1 and 19.0 oocytes, respectively) than in ovarian pairs at the follicular stage (67.1 and 11.4 oocytes, respectively). A significant difference in the proportions of oocytes with grade I out of the total examined oocytes was observed between the follicular and luteal stages of ovaries (14.9% vs 20.2%, p < 0.05). The proportions of IVF embryos cleaved and developed to blastocysts significantly decreased with decreased quality of oocytes at recovery, irrespective of the reproductive status of ovaries. Moreover, there were no significant differences in the proportions of cleavage and development to the blastocyst stage of IVF and NT embryos among three oestrous stages of ovaries. These results indicate that the reproductive cycle stage of donor cat ovaries has no apparent effects on the in vitro development of oocytes after IVF and NT, but the quality of oocytes at recovery influences the development of IVF embryos. 相似文献
182.
Effects of correcting missing daily feed intake values on the genetic parameters and estimated breeding values for feeding traits in pigs
下载免费PDF全文
![点击此处可从《Animal Science Journal》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Tetsuya Ito Kazuo Fukawa Mai Kamikawa Satoshi Nikaidou Masaaki Taniguchi Aisaku Arakawa Genki Tanaka Satoshi Mikawa Tsutomu Furukawa Kensuke Hirose 《Animal Science Journal》2018,89(1):12-20
Daily feed intake (DFI) is an important consideration for improving feed efficiency, but measurements using electronic feeder systems contain many missing and incorrect values. Therefore, we evaluated three methods for correcting missing DFI data (quadratic, orthogonal polynomial, and locally weighted (Loess) regression equations) and assessed the effects of these missing values on the genetic parameters and the estimated breeding values (EBV) for feeding traits. DFI records were obtained from 1622 Duroc pigs, comprising 902 individuals without missing DFI and 720 individuals with missing DFI. The Loess equation was the most suitable method for correcting the missing DFI values in 5–50% randomly deleted datasets among the three equations. Both variance components and heritability for the average DFI (ADFI) did not change because of the missing DFI proportion and Loess correction. In terms of rank correlation and information criteria, Loess correction improved the accuracy of EBV for ADFI compared to randomly deleted cases. These findings indicate that the Loess equation is useful for correcting missing DFI values for individual pigs and that the correction of missing DFI values could be effective for the estimation of breeding values and genetic improvement using EBV for feeding traits. 相似文献
183.
Fujita M Takaishi Y Nagae H Watanabe N Hasegawa D Taniguchi A Orima H 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2007,69(6):687-690
Magnetic resonance (MR) and computed tomography (CT) were performed in an 8-year-old, spayed female cat with chronic effort respiration at the inspiration phase and stertor. Increased bone opacity in the areas of the head, neck and thorax were observed on radiography. MR images showed no signal intensity on both transverse T1WI and T2WI of the nasal cavity. CT revealed increased bone density and hypertrophy of the nasal turbinate and a narrowed nasal passage. From these results, we concluded this case had osteopetrosis-like disease, and that the respiratory distress was caused by hypertrophy of the nasal turbinate. 相似文献
184.
Ailijiang Maimaiti Fumiko Iwanaga Takeshi Taniguchi Nana Hara Naoko Matsuo Nobuhiro Mori 《Arid Land Research and Management》2016,30(4):421-431
Halophytes dominate the plant community in saline soils. Here, osmoregulation via the accumulation of osmolytes is the basic strategy by which plants survive salinity stress. We investigated the accumulation of inorganic and organic osmolytes in the leaves of five halophytes (Tamarix hispida, Halocnemum strobilaceum, Kalidium foliatum, Karelinia caspica, and Phragmites australis) growing in the dry lakebed of Aiding Lake, Xinjiang, China. The succulent euhalophytes (H. strobilaceum and K. foliatum) accumulated large amounts of Na+, whereas other species had low Na+ concentrations. P. australis contained high concentrations of soluble carbohydrates, mainly sucrose, and amino acids, such as proline and alanine. K. caspica accumulated large quantities of mannitol. H. strobilaceum and K. foliatum had high glycine betaine contents. Only T. hispida accumulated γ-butyro betaine, which was found in high concentrations. Our findings indicate that at least four types of osmolytes (carbohydrates, polyols, amino acids, and betaines) function either alone, or in combination in the osmoregulation of these halophytes. 相似文献
185.
To understand the viscoelasticity of wood three dimensionally, a longitudinal tensile creep test for 12 species was conducted
to examine the changes with time in the lateral strain and the viscoelastic, i.e., apparent Poisson’s ratio. The changes in
the lateral strain (ɛ
T and ɛ
R) were similar to those in the longitudinal strain (ɛ
L). That is, during creep, the absolute value of lateral strain continued to increase with the gradual reduction in the increase
rate; immediately after the removal of the load, it recovered abruptly; then, it recovered slowly and finally reached a certain
value. The rate of increase in the longitudinal strain during creep was smaller than that in the absolute value of lateral
strains. The apparent Poisson’s ratio became large during creep because the lateral strain increased more than the longitudinal
strain. The analysis of lateral strain by decomposition into three components, that is, instantaneous strain, delayed elastic
strain, and permanent strain, has revealed that the lateral permanent strain in the transverse direction contributes most
to the increase in the apparent Poisson’s ratio during creep. 相似文献
186.
Epigenetic modulation on cat‐cow interspecies somatic cell nuclear transfer embryos by treatment with trichostatin A
下载免费PDF全文
![点击此处可从《Animal Science Journal》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Manita Wittayarat Yoko Sato Lanh Thi Kim Do Kaywalee Chatdarong Theerawat Tharasanit Mongkol Techakumphu Masayasu Taniguchi Takeshige Otoi 《Animal Science Journal》2017,88(4):593-601
This study aimed to determine the acetylation at lysine 9/18/23 of histone H3 (H3K9ac/H3K18ac/H3K23ac; H3K9/18/23 ac) and the di‐methylation at lysine 9 of histone H3 (H3K9me2) during early embryogenesis among trichostatin A (TSA)‐treated interspecies somatic cell nuclear transfer (iSCNT) cat‐cow (TSA‐iSCNT) embryos, TSA‐untreated iSCNT cat‐cow control (control) embryos and bovine in vitro fertilization (IVF) embryos, because TSA‐iSCNT embryos can develop to blastocysts. Compared to the control embryos, higher expressions of H3K9/18/23 ac were observed in TSA‐iSCNT embryos and IVF embryos at most following stages (2 h post‐fusion / post‐insemination (PF/PI) to eight‐cell stage). At 6 h PF/PI the expression of H3K9/23 ac in TSA‐iSCNT embryos and IVF embryos were lower than those in control embryos, and the expression of H3K18ac was no difference among the three groups. The expression of H3K9/23 ac increased in TSA‐iSCNT embryos and IVF embryos at pronuclear (PN) stages. The expression of H3K9me2 in TSA‐iSCNT embryos resembled that of IVF embryos at 2 h PF/PI to PN stages, and these expression levels were greater than those of control embryos. These results suggest that treatment of iSCNT embryos with TSA modifies the patterns of histone modification at certain lysine residues in a manner that is comparable with that seen in IVF during early embryogenesis. 相似文献
187.
188.
Yosuke Kadomae Yasuhide Maruyama Masataka Sugimoto Takashi Taniguchi Kiyohito Koyama 《Fibers and Polymers》2009,10(3):275-279
Electrospun atactic polypropylene (PP) fibers are thicker than those obtained from isotactic PP, although the viscosity of
molten PPs is almost same. Thus we focused on the effect of tacticity of PP on fiber diameters. The PP samples with various
tacticity were prepared by changing the blend ratio of isotactic PP and atactic PP. Melt-electrospinning is performed by using
blended samples, and then electrospun fibers were observed by scanning electron microscope to evaluate fiber diameter of obtained
fibers. It is clear that the diameter of electrospun PP fibers decreases as high tacticity content of PP increases. This result
suggests that tacticity of samples is an important factor to control the electrospun fiber diameter. 相似文献
189.
Michiko Hayano Naoki Horikawa Tsuneo Kuwagata Jun Furuya Yasushi Ishigooka Toshihiro Hasegawa Tomoyuki Taniguchi Akira Shimizu Hitoshi Toritani Minoru Tada Takao Masumoto 《Paddy and Water Environment》2008,6(1):15-23
This paper introduces the Agriculture, Forestry and Fisheries Research Council of Japan (AFFRC) model, an integrated model
that predicts future rice production in the Mekong River basin by taking into account the effect of global warming on both
the water cycle and the rice economy. The model focuses especially on the water balance of paddy fields for different farmland
water use systems. We defined six categories of irrigated paddies and three categories of rain-fed paddies on the basis of
their systems of water usage. We included a process-based model to predict future rice production, accounting for daily changes
in available water resources such as precipitation. Many models of crop production treat rice in the same way as other crops;
the particular characteristics of rice farming are considered in more detail in our model. Our results show that it is possible
to estimate future rice production in the Mekong River basin by taking into account changes in available water, and to model
the resultant effects on the grain market. 相似文献
190.
S Soeta R Mori T Kodaka Y Naito K Taniguchi 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》1999,61(3):233-238
The initial disorders of the epiphyseal growth plate cartilage were immunohistochemically examined in the proximal tibia of rats administered a high dose of vitamin A. Male Wistar rats were given 100,000 IU/100 g body weight/day of vitamin A for administration periods of 1 to 5 days (Day 1 to 5) from 4 weeks after birth or were given deionized water and used as control. They were sacrificed after 5-bromo-2'-deoxyuridine (BrdU) injection on Day 1 to Day 5 to remove the tibiae. The tibiae were processed for immunohistochemical examinations using antibodies against type I, II, X collagens and BrdU. BrdU-incorporated chondrocytes and type X collagen-negative area were reduced since Day 2 and type X collagen-positive area was reduced since Day 4. The cartilage matrix partially lost type II collagen and deposited type I collagen in the epiphyseal growth plate near the periosteum on Day 5. These findings suggest that a high dose of vitamin A initially disturbed the differentiation from resting to proliferating chondrocytes, subsequently inhibited the differentiation from proliferating to hypertrophic chondrocytes, caused the chondrocytes to deviate from the process of normal differentiation, and finally resulted in the deformation of the epiphyseal growth plate. 相似文献