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101.
Nikookar SH Hajheydari Z Moosa-Kazemi SH Mahmoudi M Shahmohammadi S 《Pakistan journal of biological sciences: PJBS》2012,15(2):103-107
Dermatitis caused by stimulation of beetle paederus, is a common health problem in Northern and some southern parts of Iran. Since by now, traditional medicine and some corticosteroid agents have been used for treatment of dermatitis caused by beetle paederus. Because, there are few researches about classical treatment of the disease at academic level, this study planned to compare the effectiveness of triamcinolone ointment and atorvastatin tablet with placebo in treatment ofpaederus dermatitis in Northern Iran. A randomized double-blind clinical trial was carried out on 30 patients referred to the hospital and clinics at Sari and Neka countries in Northern Iran during 6 months. Patients were randomly divided into two therapeutic equal groups. The first group was triamcinolone ointment twice a day and a placebo atorvastatin tablet daily. The second group was oral atorvastatin one tablet (20 mg) daily and a placebo triamcinolone ointment twice a day. In Seventh day of visits, therapeutic response of the patients in triamcinolone and atorvastatin group were 93.33 and 80%, respectively. No significant differences were found in therapeutic outcome between the two groups (p > 0.05). The results showed both oftriamcinolone ointment and oral atorvastatin had similar effect on paederus dermatitis. Because the paederus dermatitis is a self-limited disease use of topical therapy for treatment of the disease is recommend. 相似文献
102.
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104.
M. S. Islam M. Mahbub Hasan W. Xiong S. C. Zhang C. L. Lei 《Journal of pest science》2009,82(2):171-177
The biological activity of essential oil extracted from coriander, Coriandrum sativum L. (Apiaceae) against eggs, larvae and adults of Tribolium castaneum (Herbst) was investigated in a series of laboratory experiments. Bioassays conducted in air-tight glass chambers showed vapour
toxicity and strong repellency on filter paper arena test towards all the stages used. Responses varied significantly (P < 0.001) within insect stages, dosages and exposures. At 12.0 μg/ml dosage, mortality of adults reached 95%, but for 12-,
14- and 16-days larvae, mortalities were 65, 74 and 82%, respectively. On the developmental inhibition, individuals fumigated
at the larval stage confirmed that the percentage of larvae reaching to pupal stage and pupae to adult stage, decreased significantly
(P < 0.001) with increasing dosage concentration. The oil fumigation yielded 100% mortality for T. castaneum larvae, pupae and adults at 0.08 μg/ml dosage. The oil had fumigant activity against eggs and the toxicity progressively
increased with increased exposure times and concentrations. One hundred per cent T. castaneum egg mortalities were obtained with oil fumigation at 20 μg/ml and 96 h exposure period. C. sativum oil also showed highly repellent activity to the adults of T. castaneum, with overall repellency was 90% and at a dosage of 12 μg/ml repellency was 100% in a filter-paper arena test. 相似文献
105.
Arif Hasan Khan Robin Nicholas J. Larkan Rawnak Laila Jong-In Park Nasar Uddin Ahmed Hossein Borhan Isobel A. P. Parkin Ill-Sup Nou 《European journal of plant pathology / European Foundation for Plant Pathology》2017,149(3):611-623
Blackleg disease, caused by the hemibiotrophic fungal pathogen Leptosphaeria maculans, is one of the most devastating disease of Brassica species worldwide. To date, a total of 20 race-specific blackleg resistance (R) genes have been reported and all of those loci are located in either the A or B genomes of various Brassica species. The B. oleracea genome (CC) shares a high ancestral synteny with the A genome of B. rapa, suggesting the presence of qualitative (race specific) resistance to blackleg disease is also possible in B. oleracea germplasm. In the present study the C genome of Korean B. oleracea germplasm was screened for the presence of blackleg R genes. Thirty-two inbred cabbage lines with unknown resistance profiles, along with five control B. napus lines with well-characterised race-specific R genes, were assessed for cotyledon resistance against two L. maculans isolates with known and highly-contrasting avirulence gene (Avr) profiles. Two cabbage accessions were identified which produced a strong resistance when challenged with either isolate, demonstrating the presence of effective blackleg R genes in the cabbage C genome. Additionally, 16 microsatellite markers linked to seven different R genes of the B. napus A genome were converted into markers for their homologous regions on the B. oleracea C genome. These markers were used to screen all B. oleracea lines to assess if the novel C genome R genes were syntenous to known R gene-homologous regions of the A genome. The resistant cabbage lines offer C genome R genes for the protection of B. oleracea varieties against incursion of blackleg disease, as well as novel additional resistance sources for introgression into B. napus and B. carinata breeding material. 相似文献
106.
Hasan Arslanoglu 《Communications in Soil Science and Plant Analysis》2018,49(17):2175-2188
K-struvite (potassium magnesium phosphate, KMgPO4.6H2O) is a promising multinutrient slow-release fertilizer; however, it may contain cadmium (Cd) in significant ranges like other phosphorus (P) fertilizers. This paper focuses on dissolution of a synthesized K-struvite in water, acid solutions and complexing agents. Firstly, K-struvite was synthesized by using Cd containing phosphoric acid (H3PO4). After its characterization, a three-stage dissolution study was carried out. The release of nutrient elements and Cd into extracts was studied. Phosphorus (P) and potassium (K) solubilities in pure water are low, not more than about 2.5% at the end of three extractions. It was found that solubility increased with the presence of mineral and organic acids. The presence of complexing agents also enhanced the dissolution of K-struvite. At the end of three extractions, citric acid (CA, C6H8O7.H2O) solution solubilized P about 38%, while dissolved K was about 35%, in cumulative. In the case of 0.001 mol/L Na2EDTA (C10H14N2Na2O8.2H2O), the solubilized K-struvite was found to be about 40%, which was about 14% in a 250 mg/L Na-humate. The maximum concentrations of Cd in the third extracts of hydrochloric acid (HCl), CA, oxalic acid (OA, C2H2O4) and Na2EDTA were measured to be in the range of about 14–19 μg/L, which corresponds to a Cd solubilization more than 46% for the three successive extractions. 相似文献
107.
Hasan Ashari Oramahi Tsuyoshi Yoshimura Farah Diba Dina Setyawati Nurhaida 《Journal of Wood Science》2018,64(3):311-317
We evaluated the antifungal and antitermite activities of wood vinegars produced from oil palm trunk. The wood vinegars were produced at three different pyrolysis temperatures, 350, 400, and 450 °C. Antifungal activities of vinegars were evaluated using a Petri dish bioassay with 0.5, 1.0, and 1.5% (v/v) against a white-rot fungus, Trametes versicolor, and a brown-rot fungus, Fomitopsis palustris. Antitermite activities were tested using a no-choice bioassay method for Coptotermes formosanus with 2.5, 5.0, 7.5, and 10.0% (v/v). All the wood vinegars exhibited antifungal activities against T. versicolor. In particular, the wood vinegar produced at 350 °C resulted in complete inhibition of T. versicolor growth at 1.0 and 1.5%. However, higher concentrations were required to obtain growth inhibition of F. palustris. All the wood vinegars exhibited antitermite activity to C. formosanus workers in the no-choice experiment at relatively high concentrations. For instance, 10% concentration was required to achieve 100% mortality against C. formosanus at all production temperatures. The lowest mass loss of the treated filter paper of 11.75% was obtained with a 350 °C—10.0% combination. 相似文献
108.
Carpel weight, grain length and stabilized grain water content are physiological drivers of grain weight determination of wheat 总被引:2,自引:0,他引:2
Ahmed K. Hasan Jaime HerreraCarolina Lizana Daniel F. Calderini 《Field Crops Research》2011,123(3):241-247
Among the yield components, grain weight is considered a conservative trait whose determination is still beyond our complete understanding. Crop physiology uses a whole approach to study this complex trait, which can provide helpful information to plant breeders and molecular biologists. This study emphasizes the understanding of pre- and post-anthesis determinants of final grain weight. A field experiment was carried out in two growing seasons evaluating two wheat cultivars contrasting in grain weight potential. Carpel weight at pollination, grain dimensions, grain water, dry matter and volume dynamics were assessed. Among grain dimensions, grain length was the trait, which explained final grain weight (r2 = 0.78; P < 0.01 and r2 = 0.94; P < 0.001 for the 1st and 2nd season, respectively) and it was the first trait to stabilize after anthesis. Water content of grains stabilized little later and also showed a strong association with final grain weight (r2 = 0.93; P < 0.01 and r2 = 0.98; P < 0.01 for the 1st and 2nd season respectively). Most importantly, carpel weight at pollination showed a positive and linear association with final grain weight (r2 = 0.79, P < 0.01 and r2 = 0.86 P < 0.01 for the 1st and 2nd season, respectively) irrespective of the cultivar and grain position. In addition, positive associations were also found between grain volume, water content, grain length, and carpel weight at pollination. Therefore, the associations between pre- and post-anthesis traits found in this study support the hypothesis that grain weight is determined before anthesis and fruit tissues (i.e., pericarp in cereals and sunflower) set an upper limit to grain weight. 相似文献
109.
Md. Saiful Islam Md. Mahbub Hasan Chaoliang Lei Tanja Mucha-Pelzer Inga Mewis Christian Ulrichs 《Journal of pest science》2010,83(2):105-112
We investigated the effects of two commercial diatomaceous earth based insecticides (DE), Protect-It® and SilicoSec®, the nano-structured silica product AL06, developed by the section for Urban Plant Ecophysiology at Humboldt University Berlin, and the monoterpenoids, eugenol, and cinnamaldehyde on two stored product pests, Callosobruchus maculatus and Sitophilus oryzae. Protect-It® was more effective than SilicoSec® against C. maculatus while the reverse was true for S. oryzae. Generally C. maculatus was more sensitive towards DE and silica treatment than S. oryzae. Mortality rate of both pest species increased when DE’s were applied to food commodities previously treated with a monoterpenoid. In admixture experiments, the toxicity of SilicoSec® + cinnamaldehyde (LD50 = 42.73 ppm), SilicoSec® + eugenol (LD50 = 24.30 ppm), and Protect-It® + eugenol (LD50 = 2.60 ppm) was increased over DE alone against S. oryzae. Both substances showed a synergistic effect considering their co-toxicity coefficient relative to the LD50-value. In contrast, we could not find any synergistic effects in experiments with C. maculatus. Here only Protect-It® + cinnamaldehyde (LD50 = 20.84 ppm) showed an additive effect while all other combinations of monoterpenoid and DE indicated antagonistic effects. In addition to contact insecticidal effects both monoterpenoids showed a strong fumigant action. The presented results indicate that the natural product DE has great potential to replace synthetic pesticides commonly used in stored product pest management. Efficacy of DE can be improved by adding certain monoterpenoids against certain insect pests. 相似文献
110.
Bovine tropical theileriosis, caused by the tick-borne protozoan Theileria annulata, imposes a serious constraint upon breed improvement programmes and livestock production in tropical and sub-tropical regions of the world. Animals that recover from primary infection serve as carriers and play a critical role in the epidemiology of the disease, acting as reservoirs of infection. However, conclusive identification of carrier animals can be problematic. This study describes assessment of candidate target genes for PCR assay-based detection of T. annulata infected carrier animals. Following in silico screening and rejection of three major multi-copy gene families, an assay based on PCR amplification of a 312 bp segment of the T. annulata gene for cytochrome b (Cytob1 assay) was established. Sensitivity was evaluated using serial dilutions of blood obtained from experimentally infected calves, while specificity was confirmed by testing DNA representing twelve different T. annulata stocks and other Theileria and Babesia species. Direct comparison with other target genes and published data indicated that Cytob1 PCR-based assays provide the greatest level of sensitivity, combined with a high level of specificity and the ability to detect different T. annulata genotypes. It can be concluded that the cytochrome b gene is the optimal target for PCR amplification and its incorporation in a Reverse Line Blot Assay offers the most sensitive method yet devised to detect the parasite in carrier animals. The use of this assay will increase the accuracy of epidemiological studies aimed at improving disease control in endemically unstable regions. 相似文献