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991.
Gholamhosein Moradi Mohammad Reza Marvie Mohadjer Ghavamodin Zahedi Amiri Anoushirvan Shirvany Nosratollah Zargham 《林业研究》2010,21(2):201-206
在Postband地区(27°58′4″-28°2′16″N,53°17′34″-53°22′30″E),辨别植物种、植物多样性、生活型及地中海气候、Irano-Torunian和撒哈拉-新店相关植物种。2008年6月至2006年12月间,调查和辨认了29个科,69个属,总计95个种。就物种频度而言,菊科和禾本科是重要的科。按照Raunkiaer's生活型谱系统和利用■2检测,生活型谱表明,年生植物、地面芽植物、高位芽植物、地上芽植物和陷芽植物分别占据全部植物种的47%、31%、12%、7%和3%。在地理分布上,Irano-Torunia地区,拥有最高的频度的29%的物种。结果表明,一年生植物比生活型基准群谱高;高位芽植物比生活型基准群谱低,这与在干旱地区的研究数据相一致。图1表4参50。 相似文献
992.
Tarit Kumar BAUL Mohammad MEZBAHUDDIN Mohammad Mosharraf HOSSAIN Mohammed MOHIUDDIN 《中国林学(英文版)》2010,12(4):228-235
The present study investigated the rooting ability and growth performance of juvenile single-node leafy stem cuttings of 相似文献
993.
Mohammad Reza Ghaffariyan Karl Stampfer John Sessions 《European Journal of Forest Research》2010,129(3):409-416
Cable yarding systems are widely used in mountainous forests of Austria. The goal of this paper is to determine optimal road
spacing (ORS) of yarding operations by tower yarder in Styria to help logging planners minimize logging costs. A total of
591 working cycles were used to develop the multiple regression model using stepwise method to predict yarding time per cycle.
The production and cost in whole tree uphill yarding were 6.70 m3/PSH and 27.60 Euro/m3, respectively. The roading, yarding and installation cost per cubic meter were computed for different yarding distances and
graphed as a function of road spacing. The minimum total cost and ORS were 42.88 Euro/m3 and 261 m, respectively for one-way yarding. For two-way yarding, the minimum estimated total cost, ORS and optimal road
density would be 38.48 Euro/m3, 373 m and 26.8 m/ha, respectively. The results showed increasing harvested volume decreases ORS and that increased roading
cost increases ORS. The load volume has a significant effect on ORS. 相似文献
994.
Coxiella burnetii is an obligate intracellular microorganism that causes Q fever in humans and animals. In ewes, C. burnetii infections are generally asymptomatic, but they can lead to abortions, stillbirths, and delivery of weak and unviable lambs.
Serological assays are suitable for screening herds. Enzyme-linked immunosorbent assays (ELISA) technique has a high sensitivity
and a good specificity. The aim of this study was to investigate the presence of anti-C. burnetii antibodies among sheep in southeast Iran. A total of 85 serum samples were collected from ten sheep flocks from April to
September 2009. Serum samples were tested for Q fever antibodies using a commercial indirect ELISA kit. Antibodies were detected
in 25 sera (29.42%) of 85 samples. Sixteen female (18.82%) and nine male (10.58%) cases had antibodies specific to C. burnetii. There is significant difference in seropositivity between male and female groups (P < 0.05). This first study of C. burnetii seroprevalence in sheep in southeast Iran has indicated that seropositive animals can be found throughout the country. Further
work is now required to characterize the epidemiology of the infection more thoroughly. 相似文献
995.
996.
Ali Bagherzadeh Mohammad Reza Mansouri Daneshvar 《Frontiers of Agriculture in China》2011,5(4):504-513
Land evaluation is the process of predicting land use potential on the basis of its attributes. In the present study, the
physical land suitability evaluation approach was investigated for specific cereal crops including irrigated wheat, barley,
grain maize and sorghum, based on FAO land evaluation frameworks (FAO, 1976, 1983, 1985) and the proposed method by Sys et
al. (1991) at Mashhad Plain, Northeast Iran. Twenty eight soil profiles were studied on seven land units by a precise soil
survey and their morphological and physicochemical properties were determined. Climatic and land qualities/characteristics
of four cereal crops were determined using the tables of crop requirements developed by Sys et al. (1993). An interpolation
function was used to map values to scores in terms of land qualities/characteristics for land utilization types and the evaluation
was carried out according to parametric approaches. The interpolation technique using GIS functions helped in managing the
spatial data and visualizing the results. Our results indicated that the most important limiting factors for irrigated wheat
and barley cultivations are soil physical and fertility/chemical properties, while the production of irrigated grain maize
and sorghum is mainly limited by climatic conditions at Mashhad Plain. It was shown that all land units suitable for irrigated
wheat cultivation overlap with that of barley, whereas the same limiting factors resulted in the overlapping of the irrigated
grain maize production area with that of sorghum. The results of the physical land suitability evaluation for specific cereal
crops indicated the priority of irrigated barley and wheat cultivations over irrigated grain maize and sorghum at the study
area. 相似文献
997.
Ashkan Banan Mahmoud Bahmani Mohammad Ali Yazdani Sadati 《Journal Of Applied Aquaculture》2013,25(1):71-80
Effects of light and tank colors on stress response of juvenile beluga sturgeon, Huso huso, was investigated by the measurement of some sero-haematological parameters and carcass chemical analysis. The analysis was based on the responses of 64 specimens (initial weight 98.83 ± 1.42 g) reared under white, red, green, or blue light, and 48 specimens reared in white, black, or blue tanks, all for 12 weeks. Blue/green light and black tanks produced positive effects on cortisol that can be related to physiological condition and stress. 相似文献
998.
999.
Marzieh Holakuyee Mehdi Mahdavi Zuhair Mohammad Hassan Mohsen Abolhassani 《Iranian Biomedical Journal》2012,16(4):209-217
Background
Heat shock proteins (HSP) are highly conserved molecules with many immunological functions. They are highly immunogenic with important role in cancer immunotherapy and in vaccine development against infectious diseases. As adjuvant, HSP can augment the immunogenicity of weak antigens and can stimulate antigen presenting cells. Although vaccines have been successful for many infectious diseases, progress in leishmaniasis has not been achieved. In this report, the protective effect of HSP-enriched soluble leishmania antigen (SLA) was determined.Methods
BALB/c mice were immunized 3× with HSP-enriched SLA and SLA alone and 10 days after final boost. They were infected with 106 stationary phase promastigote of Leishmania major and immunological responses were followed until nine weeks.Results
No significant differences were observed in lymphocyte proliferation, footpad swelling, parasite burden, nitric oxide or IL-12 cytokine between HSP-enriched or SLA groups. Although the levels of IFN-γ, IL-4, TGF-β, IgG1 and IgG2b were increased in both groups, IFN-γ was significantly higher in SLA group and IgG2a in HSP-enriched SLA.Conclusion
These results indicate that HSP direct the immune system towards Th2 pattern and does not have protective role in L. major infection. Key Words: Leishmaniasis, Heat shock proteins (HSP), Adjuvant 相似文献1000.
Z Akhlaghi JI Mobarakeh M Mokhtari H Behnam AA Rahimi MS Khajeh Hosseini F Samiee 《Iranian Biomedical Journal》2012,16(2):107-112
Background: Initial studies have shown that low-energy ultrasound stimulates living tissue cells to reduce regeneration or speed up their recovery. The purpose of this study was to examine the effects of various ultrasound parameters on the speed of recovery in injured sciatic nerves NMRI.Methods: NMRI mice (n = 200) with injured left paw, caused by crushing their sciatic nerves, were randomly selected. The animals were exposed to ultrasound radiation with various frequencies, intensities, and exposure time. They were allocated into 20 groups (19 treatment and 1 control groups). Sciatic functional index (SFI) test was used to evaluate the difference between the groups with respect to functional efficiency of the sciatic nerve and its recovery. SFI ، (P=0.000).Results: The results of SFI test obtained from the 14th day showed a significant difference among the groups (P<0.05). On the 14th day after treatment, one of the groups (US11) recovered up to 90%..Conclusion: Altered ultrasound exposure parameters had more favorable outcomes compared with our previous work.Key Words: Sciatic nerve, Ultrasonic therapy, Regeneration 相似文献