全文获取类型
收费全文 | 199篇 |
免费 | 7篇 |
专业分类
林业 | 14篇 |
农学 | 12篇 |
22篇 | |
综合类 | 10篇 |
农作物 | 43篇 |
水产渔业 | 26篇 |
畜牧兽医 | 72篇 |
园艺 | 1篇 |
植物保护 | 6篇 |
出版年
2023年 | 2篇 |
2022年 | 1篇 |
2021年 | 8篇 |
2020年 | 4篇 |
2019年 | 3篇 |
2018年 | 8篇 |
2017年 | 2篇 |
2016年 | 5篇 |
2015年 | 6篇 |
2014年 | 11篇 |
2013年 | 16篇 |
2012年 | 13篇 |
2011年 | 20篇 |
2010年 | 8篇 |
2009年 | 15篇 |
2008年 | 15篇 |
2007年 | 21篇 |
2006年 | 11篇 |
2005年 | 12篇 |
2004年 | 6篇 |
2002年 | 8篇 |
2001年 | 6篇 |
2000年 | 2篇 |
1999年 | 2篇 |
1998年 | 1篇 |
排序方式: 共有206条查询结果,搜索用时 15 毫秒
151.
Jee H Pakhrin B Bae IH Shin NS Lee SI Yoo HS Kim DY 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2007,69(8):851-852
Pyelonephritis, in which Staphylococcus intermedius was isolated, was diagnosed in a 4-year-old female Siberian tiger (Panthera tigris altaica). At necropsy, the renal pelvis was dilated with a large amount of purulent exudates. Microscopically, the lesions of renal pelvis and medulla consisted of necrotic foci intermingled primarily with numerous degenerative neutrophils and a few lymphocytes, plasma cells and macrophages. Bacteriology showed the presence of S. intermedius. This is the first report on pyelonephritis associated with S. intermedius in wild felidae. 相似文献
152.
Bae BK Kim CW Choi US Choi EW Jee H Kim DY Lee CW 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2007,36(4):376-378
A 10-year-old female Dachshund was presented with a history of mammary masses, slight lethargy, polyuria, and polydipsia. Physical examination findings included masses involving the first, second, and fourth mammary glands of the left side. The mandibular, axillary, and right popliteal lymph nodes were mildly enlarged. Serum chemistry results included hypercalcemia (13.9 mg/dL, reference interval 8.0-11.5 mg/dL). Although intact parathyroid hormone (PTH) concentration (1.05 pmol/L) was below the reference interval (2-13 pmol/L), PTH-related protein (PTHrP) concentration was markedly increased (9.40 pmol/L, reference value < 2 pmol/L). The masses were surgically removed, and the histopathologic diagnosis was complex mammary carcinoma. Three weeks after surgery, serum total calcium concentration had decreased to 10.5 mg/dL. Resolution of the hypercalcemia and clinical signs supported a diagnosis of humoral hypercalcemia of malignancy associated with mammary gland carcinoma. 相似文献
153.
Jae Yeon HWANG Kwang-Hwan CHOI Dong-Kyung LEE Seung-Hun KIM Eun Bae KIM Sang-Hwan HYUN Chang-Kyu LEE 《The Journal of reproduction and development》2015,61(6):533-540
X-chromosome inactivation (XCI) is an epigenetic process that equalizes expression of X-borne genes between
male and female eutherians. This process is observed in early eutherian embryo development in a
species-specific manner. Until recently, various pluripotent factors have been suggested to regulate the
process of XCI by repressing XIST expression, which is the master inducer for XCI. Recent
insights into the process and its regulation have been restricted in mouse species despite the evolutionary
diversity of the process and molecular mechanism among the species. OCT4A is one of the
represented pluripotent factors, the gate-keeper for maintaining pluripotency, and an XIST
repressor. Therefore, in here, we examined the relation between OCT4A and X-linked genes in
porcine preimplantation embryos. Three X-linked genes, XIST,
LOC102165544, and RLIM, were selected in present study because their
orthologues have been known to regulate XCI in mice. Expression levels of OCT4A were
positively correlated with XIST and LOC102165544 in female blastocysts.
Furthermore, overexpression of exogenous human OCT4A in cleaved parthenotes generated
blastocysts with increased XIST expression levels. However, increased XIST
expression was not observed when exogenous OCT4A was obtained from early blastocysts. These
results suggest the possibility that OCT4A would be directly or indirectly involved in
XIST expression in earlier stage porcine embryos rather than blastocysts. 相似文献
154.
Yong Jin Lee Tong Geon Lee Woong Bae Jeon Dae Yeon Kim Min Jeong Hong Man Bo Lee Jong Nae Hyun Mi Jung Kim Mi Ja Lee Cheol Su Park Yong Weon Seo 《Journal of Crop Science and Biotechnology》2010,13(2):91-97
Cereal seed storage proteins are encoded by complex multigene families and their subunit profiles are highly related to end-use qualities. Each fraction of albumin and hordein was extracted and its subunit profile was evaluated in related to malt and grain quality parameters. The purpose of this study was to provide selection criteria for high quality malting barley using grain and malt quality parameters and biochemical-genetic information. Grain and malt quality of 13 local adaptability test (LAT) lines were evaluated for malting process. A total of 16 germplasm accessions of high or low seed storage protein content were also evaluated for biochemicalgenetic analysis. The correlation coefficients among quality parameters were analyzed. Several important quality parameters in brewing process showed significant positive or negative correlations. Seed storage protein subunits of albumin and hordein of all tested lines and accessions were evaluated using 12% 1D SDS-PAGE. Scored data of protein subunit’s presence or absence was applied to Agglomerative Hierarchical Clustering (AHC) for statistical analysis and showed specific grouping patterns among tested lines. Clustered lines with subunit information were highly related with agricultural performance and grain and malt qualities. Based on the profiles of seed storage protein subunits, association of hordein subunit of 38, 43, and 65 kDa with high malt scored lines was found. The obtained results would provide improved selection criteria for high quality malting barley in the malting barley breeding program. 相似文献
155.
156.
The solvatochromic behavior of indonaphthol dye was described. The UV/Vis absorption spectra of this compound have been studied
in 5 solvents of different polarity. The solvatochromism of indonaphthol dye is discussed with the aid of semiempirical calculations. 相似文献
157.
Synthesis and application of alkyl-substituted disazo yellow dyes for unmodified polypropylene fiber
Taekyeong Kim Jongsuc Jung Songi Son Seokhan Yoon Mikyung Kim Jin-Seok Bae 《Fibers and Polymers》2008,9(5):538-543
The several disazo dyes having different alkyl substituents were synthesized to dye unmodified polypropylene fiber. The affinity
of the dyes onto unmodified polypropylene was increased with the increase of the length of alkyl substituents. Therefore,
the heptyl-substituted dye having the longest alkyl group in this experiment showed very high color strength of dyeings with
K/S value of over 24 at maximum absorption wavelength. The color fastnesses to washing, rubbing and light were also improved
significantly for the longer alkyl substituted dyes, so that the heptyl-substituted dye exhibited a rating of 4∼5 for all
kinds of fastnesses. 相似文献
158.
Young-A Son Ji-Hyun Hwang Sheng Wang Jin-Seok Bae Sung-Hoon Kim 《Fibers and Polymers》2009,10(2):272-274
The dye chemosensor for mercury ion detection was designed, which was based on donor-acceptor intramolecular charge transfer
system and the corresponding fluorescence changing property was successfully monitored. This new dye chemosensor was containing
dimethylcarbamodithioate groups to coordinate Hg2+, which showed very effective sensing functions. But it showed no significant changes upon the addition of other metal ions
such as Ca2+, Pb2+, Al3+, Ce2+, Ba2+, Ni2+, Cd2+, Zn2+, and Mg2+. 相似文献
159.
A new flavone glycoside, apigenin 5-O-alpha-L-rhamnopyranosyl-(1-->3)-beta-D-glucopyranoside (1), along with four known flavonol glycosides (2-5), were isolated from the leaf of Cephalotaxus koreana. The new glycoside 1 showed inhibitory activity in superoxide radical scavenging assay with IC(50) value of 13.0 microM, while it showed weak activity in 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging assay. Compounds 2-5 exhibited antioxidant activity in scavenging DPPH and superoxide radicals with IC(50) values ranging from 5.7 to 22.3 microM. 相似文献
160.
Asami Yoshida Inwoo Bae Hiroko Sonoda Min-Jie Cao Katsuyasu Tachibana Kiyoshi Osatomi Kenji Hara 《Fisheries Science》2009,75(6):1439-1444
Collagen degradation is known to be involved in the post mortem tenderization of fish muscle. A serine proteinase that is assumed to be related to collagen degradation after fish death was purified from the sarcoplasmic fraction of red sea bream Pagrus major by ammonium sulfate fractionation and column chromatography on Sephacryl S-300, Q Sepharose and Phenyl Sepharose CL-4B. The enzyme hydrolyzed gelatin and was obtained as a protein band of approximately 38 kDa upon sodium dodecyl sulfate polyacrylamide gel electrophoresis under reducing conditions. The N-terminal amino acid sequence of the enzyme was determined for 32 residues. A protein that had the same N-terminal amino acid sequence as the enzyme for ten residues was purified from the serum of red sea bream and showed the same characteristics as the enzyme. Therefore, it is suggested that the serine proteinase migrates from the blood to muscle and degrades muscle proteins after the death of the fish. 相似文献