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Abeer Hashem Ashwani Kumar Abeer M. Al-Dbass Abdulaziz A. Alqarawi Al-Bandari Fahad Al-Arjani Garima Singh Muhammad Farooq Elsayed Fathi Abd_Allah 《Saudi Journal of Biological Sciences》2019,26(3):614-624
Arbuscular mycorrhizal fungi (AMF) inoculation and biochar amendment has been reported to improve growth of several crop plants however their role in stress amelioration individually as well as in combination has not been worked out. This experiment was conducted to evaluate the application of AMF and biochar on the performance of chickpea under drought stress. The treatments included the individual as well as combined treatment of AMF and biochar to drought stressed and normal chickpea plants. Plants inoculation improved growth in terms of shoot and root length, leaf area and number of branches which was observed to show a steep decline due to drought stress. Drought declined the AMF colonization potential though biochar amendment ameliorated the negative effects of drought significantly by improving the spore population, number of mycelium, vesicle and arbuscules and the percentage of colonization as well. Increased chlorophyll synthesis in biochar and AMF treated plants was obvious, which lead to significant enhancement in the net photosynthetic efficiency. Drought stress also declined the relative water content (RWC) and membrane stability index (MSI), while treatment of biochar and AMF either individually or in combination mitigated the deleterious effects to considerable extent and caused a significant enhancement in RWC and MSI under normal conditions. Amendments with biochar and AMF inoculation increased the nitrogen fixation attributes including the number and weight of nodules, leghemoglobin content and activity of nitrate reductase enzyme leading to greater uptake and assimilation of nitrogen in them when compared to drought stressed plants. Drought stressed chickpea plants exhibited considerable reduction in uptake of nitrogen and phosphorous which was ameliorated by biochar and AMF treatments. It could be suggested that increase in growth and physiological attributes in chickpea due to biochar amendments and AMF inoculation under drought stress were plausibly due to their involvement in nitrogen and phosphorous uptake, chlorophyll synthesis and photosynthesis. 相似文献
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Robeena Sarah Baby Tabassum Nida Idrees Abeer Hashem Elsayed Fathi Abd_Allah 《Saudi Journal of Biological Sciences》2019,26(5):979-984
Ganga is the largest riverine system of India with a fragile ecosystem. Its prone to anthropogenic disturbances because of its cultural, economic and environmental values. The contamination of river Ganga by heavy metals (HM) is due to biotic (anthropogenic sources) and abiotic (pesticides, fertilizers) sources that poses a devastating health hazard to human, plant and edible fish life. The chemical analysis with the help of atomic absorption spectrometer performed on its water samples demonstrated the accumulation of heavy metals such as Arsenic (As), Lead (Pb), Cadmium (Cd), Iron (Fe), Zinc (Zn). Moreover, the spectrophotometric analysis indicated clearly the accumulation of heavy metals in order of occurrence (Fe > As > Cd > Zn > Pb) in liver and (Zn > Fe > As > Cd > Pb) in kidney of edible fish Channa punctatus. The present study has be used to sensitively monitor the extent of heavy metals pollution in the biotic aqua life of river Ramganga system and its suggested that the bioaccumulation of heavy metal in Channa punctatus has reached above permissible limits for human consumption, indicating potential health risks. Necessary biological steps should be taken to handle such food pollution and prevent the environmental risk and food chain disruption. 相似文献
14.
Fathi GH Eshtiaghi H Kheiri A Okhovat M 《Communications in agricultural and applied biological sciences》2004,69(3):393-396
In this research, control of tomato root- knot nematode (Meloidogyne incognita) was conducted using tea dust residues at different rates. First, the species and race of nematode were identified by employing diagnostic keys. Then, with 5 replications in complete randomized design. Tea dust residues were used at 9 treatments (0, 5, 10, 15, 20, 25, 30, 35 and 40 g/kg of soil). Statistical analysis on mean treatments rates showed that treatment with 25 g/kg soil economically was effective in growth rates and reduction in gall index. 相似文献
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The coverage of large soft-tissue defects usually requires a large flap transfer, especially in a combination and expanded form. However, some large soft-tissue defects still cannot be covered by such flaps. In this article, we present a case of a civil war injury in a patient from Afghanistan who had severe trauma to the right knee, lower thigh, and upper leg and a marked soft-tissue defect. This large soft-tissue defect was covered with a large combined free flap of the expanded parascapular and latissimus dorsi muscle, including a large retrograde hinge flap of the tissue expander capsule and a complementary skin graft. The defect was covered completely, and the final result was excellent. 相似文献
16.
DeCarr LB Buckholz TM Coish PD Fathi Z Fisk SE Mays MR O'Connor SJ Lumb KJ 《Bioorganic & medicinal chemistry letters》2007,17(2):538-541
Activation of the NPY2 receptor to reduce appetite while avoiding stimulation of the NPY1 and NPY5 receptors that induce feeding provides a pharmaceutical approach to modulate food intake. The naturally occurring peptide PYY(3-36) is a nonselective NPY1, NPY2, and NPY5 agonist. N-terminal truncation of PYY to abrogate affinity for the NPY1 and NPY5 receptors and subsequent N-terminal modification with aminobenzoic analogs to restore NPY2 receptor potency results in a series of highly selective NPY2 receptor peptide agonists. 相似文献
17.
I Ben Charfeddine FG Riepe E Clauser A Ayedi S Makni MT Sfar H Sboui N Kahloul H Ben Hamouda S Chouchane S Trimech N Zouari S M'rabet F Amri A Saad PM Holterhus M Gribaa 《Gene》2012,507(1):20-26
Congenital adrenal hyperplasia (CAH) is an autosomal recessive disease of steroid biosynthesis in humans. More than 90% of all CAH cases are caused by mutations of the 21-hydroxylase gene (CYP21A2), and approximately 75% of the defective CYP21A2 genes are generated through an intergenic recombination with the neighboring CYP21A1P pseudogene. In this study, the CYP21A2 gene was genotyped in 50 patients in Tunisia with the clinical diagnosis of 21-hydroxylase deficiency. CYP21A2 mutations were identified in 87% of the alleles. The most common point mutation in our population was the pseudogene specific variant p.Q318X (26%). Three novel single nucleotide polymorphism (SNP) loci were identified in the CYP21A2 gene which seems to be specific for the Tunisian population. The overall concordance between genotype and phenotype was 98%. With this study the molecular basis of CAH has been characterized, providing useful results for clinicians in terms of prediction of disease severity, genetic and prenatal counseling. 相似文献
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Evaluation of inhibitory effect and apoptosis induction of Zyzyphus Jujube on tumor cell lines,an in vitro preliminary study 总被引:3,自引:0,他引:3
In the present study, water extract of dried fruit of Zyzyphus Jujube was tested for its possible anticancer effect and induction
of apoptosis on human tumor cell lines, HEp-2, HeLa and Jurkat cell lines. The inhibitory effect of water extract of this
fruit on cell proliferation was assessed by MTT colorimetric assay. The induction of apoptosis of this extract was analyzed
by DNA fragmentation analysis. Zyzyphus Jujube extract showed inhibitory effects on mentioned cell lines. Jurkat leukemic
line was found the most sensitive cells with IC50 of 0.1 μg mL−1. Our study also showed a typical DNA laddering in this cell line. The present study showed cytotoxic activity of Zyzyphus
Jujube on tumor cells. Although Zyzyphus Jujube has useful compounds for medical applications. 相似文献