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991.
Park KW Kim SY Jeong IY Byun MW Park KH Yamada K Seo KI 《Journal of agricultural and food chemistry》2007,55(19):7957-7961
In this study we isolated crude thiosulfinates from Allium tuberosum L. using CH 2Cl 2 and then with silica gel column chromatography purified S-methyl methanthiosulfinate and S-methyl 2-propene-1-thiosulfinate from the crude thiosulfinates. Subsequently, in vitro cytotoxicities against human cancer cells and in vivo antitumor activities of the thiosulfinates were investigated. Their cytotoxicities were strong in human cancer cells, in the order of S-methyl 2-propene-1-thiosulfinate, crude thiosulfinates, and S-methyl methanthiosulfinate. When thiosulfinates were administered consecutively for 7 days at 10, 30, and 50 mg/kg ip, in mice, we found significant increases in the life spans of mice that had been inoculated with Sacorma-180 tumor cells. The crude thiosulfinates also induced apoptosis in MCF-7 cancer cells. These results suggest that thiosulfinates from Allium tuberosum L. inhibit the proliferation of cancer cells via apoptosis and have antitumor activities. 相似文献
992.
Byeong-Teck Kang Dong-Pyo Jang Jong-Hwan Lee Dong-In Jung Su-Hyun Gu Chae-Young Lim Young-Bo Kim Fu-Shi Quan Hyung-Joong Kim Eung-Je Woo Zang-Hee Cho Hee-Myung Park 《Research in veterinary science》2009,87(2):300-306
Proton magnetic resonance spectroscopy (1H MRS) provides in vivo biochemical information on tissue metabolites. The purpose of this study was to investigate the serial metabolic changes of 1H MRS in the cerebrum of ischemic dogs. An ischemic stroke was induced in five health laboratory beagle dogs by permanent middle cerebral artery occlusion using a silicone plug. 1H MRS was serially performed three times with a 1.5-T MR system: before, three days after and 10 days after the stroke. Immunohistochemical staining was performed to determine the expression of neuronal nuclei (NeuN) and glial fibrillary acidic protein (GFAP) at both the ipsilateral and contralateral cerebral cortex. Reduced levels of N-acetyl-asparate (p < 0.05), choline (Cho), creatine (Cr) and myo-inositol (mI), and a marked increase in the lactate (Lac) level (p < 0.01) were found at three days after the stroke. At 10 days after the stroke, the levels of Lac significantly increased (p < 0.01); however, the other metabolites were partially elevated. The changes of Cr, Cho and mI were not statistically significant (p > 0.05) when the before and after stroke values were compared. There was a significant loss of NeuN and GFAP immunoreactivity at the ischemic core. 1H MRS may be to a useful diagnostic tool for the evaluation of ischemic stroke in dogs. 相似文献
993.
A miniarray system was developed for the simultaneous detection of porcine circovirus type 1 (PCV1) and type 2 (PCV2) in pigs.
The system consists of a polymerase chain reaction (PCR) step to amplify target viral DNA, followed by detection of the amplified
DNA using a membrane-anchored probe array and an avidin-alkaline phosphatase (Av-AP) indicator system. The lower limit of
detection of PCV using the miniarray was 101.9 tissue culture infectious dose 50 (TCID50)/ml and 102.08TCID50/ml for PCV1 and PCV2, respectively, and 100 viral copies/μl for both PCV1 and PCV2. We validated the miniarray system using
141 lymph node specimens from pigs with suspected postweaning multisystemic wasting syndrome or porcine dermatitis and nephropathy
syndrome. Of the 141 samples evaluated, 55 were identified as positive for PCV by the miniarray. Relative to in situ hybridization, the sensitivity and specificity of the miniarray was 100% and 98.9%, respectively. In contrast to other microarray
systems, the miniarray does not require a DNA chip reader, since the results can be determined by visual inspection of colorized
spots on a nylon membrane. This system represents an effective alternative method for the differential detection of PCV1 and
PCV2 in pigs, as well as the maintenance of PCV-free cell lines and pre-screening of commercial vaccines for possible contamination. 相似文献
994.
Sacral osteochondrosis in two German Shepherd Dogs 总被引:1,自引:1,他引:0
KR Mathis M Havlicek JB Beck RD Eaton-Wells FM Park 《Australian veterinary journal》2009,87(6):249-252
Two young adult male castrated German Shepherd Dogs were referred for evaluation of intermittent episodes of hindlimb pain. Physical examination suggested lumbosacral stenosis, and plain radiographs and computed tomography revealed lesions consistent with sacral osteochondrosis. One dog had osteochondral fragments removed surgically; the other was managed conservatively. The surgically treated dog had complete resolution of clinical signs whereas the dog managed conservatively had repeated episodes of mild pain and received one short course of non-steroidal anti-inflammatory medication in 18 months. Sacral osteochondrosis has not been previously reported in Australia. 相似文献
995.
Min-Soo Seo Yun-Hyeok Jeong Jeung-Ran Park Sang-Bum Park Kyoung-Hwan Rho Hyung-Sik Kim Kyung-Rok Yu Seung-Hee Lee Ji-Won Jung Yong-Soon Lee Kyung-Sun Kang 《Journal of veterinary science (Suw?n-si, Korea)》2009,10(3):181-187
Human umbilical cord blood-derived mesenchymal stem cells (MSCs) are known to possess the potential for multiple differentiations abilities in vitro and in vivo. In canine system, studying stem cell therapy is important, but so far, stem cells from canine were not identified and characterized. In this study, we successfully isolated and characterized MSCs from the canine umbilical cord and its fetal blood. Canine MSCs (cMSCs) were grown in medium containing low glucose DMEM with 20% FBS. The cMSCs have stem cells expression patterns which are concerned with MSCs surface markers by fluorescence-activated cell sorter analysis. The cMSCs had multipotent abilities. In the neuronal differentiation study, the cMSCs expressed the neuronal markers glial fibrillary acidic protein (GFAP), neuronal class III β tubulin (Tuj-1), neurofilament M (NF160) in the basal culture media. After neuronal differentiation, the cMSCs expressed the neuronal markers Nestin, GFAP, Tuj-1, microtubule-associated protein 2, NF160. In the osteogenic & chondrogenic differentiation studies, cMSCs were stained with alizarin red and toluidine blue staining, respectively. With osteogenic differentiation, the cMSCs presented osteoblastic differentiation genes by RT-PCR. This finding also suggests that cMSCs might have the ability to differentiate multipotentially. It was concluded that isolated MSCs from canine cord blood have multipotential differentiation abilities. Therefore, it is suggested that cMSCs may represent a be a good model system for stem cell biology and could be useful as a therapeutic modality for canine incurable or intractable diseases, including spinal cord injuries in future regenerative medicine studies. 相似文献
996.
997.
Shin Ae Park Na Young Yi Man Bok Jeong Won Tae Kim Se Eun Kim Je Min Chae Kang Moon Seo 《Veterinary ophthalmology》2009,12(4):205-210
Objective To determine the incidence, etiology, and concurrent ophthalmic findings in small breed dogs that presented with cataracts.
Animal studied Five hundred and sixty-one small breed dogs (942 eyes) were presented to the Veterinary Medical Teaching Hospital of Seoul National University between July 2002 and December 2007 with cataract.
Procedure The medical records of small breed dogs with cataract were reviewed. The reason for presentation, cataract duration, bilaterality, breed, gender, age, vision, etiology, stage of cataract development, concurrent ophthalmic findings, IOP, ocular ultrasonography findings, and scotopic electroretinography (ERG) findings were investigated.
Results The most frequently presented breeds were the Miniature/Toy Poodle ( n = 112, 20.0%), Yorkshire Terrier ( n = 110, 19.6%), and Shih Tzu ( n = 95, 16.9%). The Miniature/Toy Poodle showed a significantly higher odds ratio for cataract formation (2.6). The proportion of female cataract patients was significantly higher than that of male cataract patients in the overall population ( P < 0.05). The Miniature/Toy Poodles had significantly higher numbers of females affected with cataract ( P < 0.01). The mean age for cataract formation was 8.3 ± 3.9 years. The mean age at onset in the Miniature/Toy Poodle and Yorkshire Terrier was significantly higher, whereas that in the Miniature Schnauzer group was significantly lower ( P < 0.0001). Clinical signs related to lens induced uveitis had a tendency to increase with cataract progression ( P < 0.05). There were no significant differences in the b-wave amplitude for mixed rod cone response by stage ( P = 0.137).
Conclusions Small breed dogs with cataracts had characteristics with regard to age of onset and gender distribution, depending on the breed. 相似文献
Animal studied Five hundred and sixty-one small breed dogs (942 eyes) were presented to the Veterinary Medical Teaching Hospital of Seoul National University between July 2002 and December 2007 with cataract.
Procedure The medical records of small breed dogs with cataract were reviewed. The reason for presentation, cataract duration, bilaterality, breed, gender, age, vision, etiology, stage of cataract development, concurrent ophthalmic findings, IOP, ocular ultrasonography findings, and scotopic electroretinography (ERG) findings were investigated.
Results The most frequently presented breeds were the Miniature/Toy Poodle ( n = 112, 20.0%), Yorkshire Terrier ( n = 110, 19.6%), and Shih Tzu ( n = 95, 16.9%). The Miniature/Toy Poodle showed a significantly higher odds ratio for cataract formation (2.6). The proportion of female cataract patients was significantly higher than that of male cataract patients in the overall population ( P < 0.05). The Miniature/Toy Poodles had significantly higher numbers of females affected with cataract ( P < 0.01). The mean age for cataract formation was 8.3 ± 3.9 years. The mean age at onset in the Miniature/Toy Poodle and Yorkshire Terrier was significantly higher, whereas that in the Miniature Schnauzer group was significantly lower ( P < 0.0001). Clinical signs related to lens induced uveitis had a tendency to increase with cataract progression ( P < 0.05). There were no significant differences in the b-wave amplitude for mixed rod cone response by stage ( P = 0.137).
Conclusions Small breed dogs with cataracts had characteristics with regard to age of onset and gender distribution, depending on the breed. 相似文献
998.
Lee So Young Kim Eun-Gyeong Park Jae-Ryoung Jang Yoon-Hee Jan Rahmatullah Ryu Taehun Kim Kyung-Min 《Journal of Crop Science and Biotechnology》2021,24(2):221-228
Journal of Crop Science and Biotechnology - Worldwide, grain consumption is increased and grain prices are rising. This has led to a steady increase in the production of highly productive and more... 相似文献
999.
J. P. Suh C. K. Lee J. H. Lee J. J. Kim S. M. Kim Y. C. Cho S. H. Park J. C. Shin Y. G. Kim K. K. Jena 《Euphytica》2012,184(1):101-108
Cold tolerance at the seedling stage of rice is an important phenotypic trait that causes normal plant growth and stable rice
production in temperate regions as well as tropical high-lands in Asia and Africa. In order to find quantitative trait loci
(QTLs)/genes associated with cold tolerance, we constructed a linkage map using 153 recombinant inbred lines (RILs) derived
from a cross between a cold-tolerant temperate japonica cultivar, Geumobyeo, and a cold-sensitive tropical japonica breeding
line, IR66160-121-4-4-2. The RILs were phenotyped for cold tolerance or sensitivity based on the degrees of cold tolerance
as cold tolerance indices at the seedling stage. The seedlings for cold-tolerance/-sensitive traits were scored on the 7th
day of the recovery period at 25°C after cold treatment at 10°C. Two QTLs (qCTS4a and qCTS4b) associated with cold tolerance at the seedling stage were identified on the long and short arms of chromosome 4 with an
LOD score of 2.89 and 2.75, respectively, using composite interval mapping. The QTLs were flanked by simple sequence repeat
(SSR) markers RM3648-RM2799 and RM3375a-RM558 that explained 8.3 and 7.8% of the total phenotypic variation, respectively.
Seven of the selected RILs expressed cold tolerance at both the seedling and reproductive stages. The SSR markers associated
with the QTLs will be useful for tracking favorable QTLs/genes into cold-sensitive elite cultivars and may have potential
for pyramiding different QTLs for the improvement of cold tolerance in rice. 相似文献
1000.
BACKGROUND: In the natural environment, photodegradation is one of the most common degradative processes of pesticides. In order to reduce the photodegradation of pesticides, and so increase their killing activity against target pests, chitosan‐coated beeswax solid lipid nanoparticles (CH‐BSLNs) were prepared by a combination of hot homogenization and sonication, with deltamethrin as an active ingredient. RESULTS: Under optimal conditions, the highest encapsulation efficiency (95%) and a high payload of deltamethrin (approximately 12.5%) were achieved. In direct photolysis, in the case of CH‐BSLNs after UV irradiation for 24 h, 37.3% of deltamethrin remained, as opposed to only 14.6% of the free‐form deltamethrin. In addition, in indirect photolysis, in the case of CH‐BSLNs after UV irradiation for 2 h in 2% acetone solution, approximately 74.5% of deltamethrin remained, as opposed to only 37.6% of the free‐form deltamethrin. CONCLUSION: CH‐BSLNs showed good protection for deltamethrin against photodegradation. This novel nanocarrier may be useful in crop protection as an economical strategy to enhance the effect of pesticides in the field and protect the environment as well. Copyright © 2012 Society of Chemical Industry 相似文献