نتایج جستجو برای: substantial nigra
تعداد نتایج: 147087 فیلتر نتایج به سال:
به منظور انتخاب و معرفی کلن های برتر صنوبر، 10 کلن از گونه populus nigra که در خزانه سلکسیون برتری خود را نشان داده بودند، طی یک مرحله هشت ساله در قالب طرح آزمایشی بلوکهای کامل تصادفی با سه تکرار در فواصل کاشت 3×3 متر در ایستگاه تحقیقاتی مهرگان کرمانشاه مورد مطالعه قرار گرفتند. پس از اتمام مرحله اول رویش به مدت 8 سال و بهره برداری از درختان موجود و تولید جست های جدید از کنده های باقی مانده در س...
با توجه به تغییرات اقلیمی و خشکسالیهای اخیر، ارزیابی توان رشد و تولید ارقام صنوبر (Populus spp) در شرایط تنش خشکی ضروری است. این پژوهش با 14 کلن تاجبسته صنوبر (P. nigra L) با فاصله کاشت 3×3 متر از سال 1380 بهمدت هفت سال در سنندج اجرا شد. کاشت نهال کلنها در قالب طرح آزمایشی بلوکهای کامل تصادفی با سه تکرار در فروردین 1381 انجام شد. مزرعه در سال 1386 بهدلیل عدم امکان تأمین آب تا دهم تیر تحت...
Crude ethanolic extract of Brassica nigra was studied to detect the chemical compounds as well as to evaluate the antioxidant and anti-inflammatory activities. The different antioxidants assays including total antioxidant activity, DPPH, nitric oxide (NO) scavenging, reducing power, total phenolic content and flavonoid content were studied. Phytochemical screening showed the presence of alkaloi...
Theiler's murine encephalomyelitis virus was stereotaxically inoculated unilaterally into the substantia nigra of the mouse brain. Virus specifically infected tyrosine hydroxylase-positive neurons and spread rostrocaudally throughout this subpopulation of neurons, resulting in impaired function and degeneration of the substantia nigra. The spread of the virus to other areas of the brain was min...
BACKGROUND AND PURPOSE Progressive changes in the substantia nigra pars compacta and locus ceruleus of patients with Parkinson disease and Alzheimer disease visualized by neuromelanin MRI and cardiac postganglionic sympathetic nerve function on (123)I-metaiodobenzylguanidine scintigraphy have not been fully evaluated. We compared the diagnostic value of these modalities among patients with earl...
Dopamine release can regulate striatal acetylcholine efflux in vivo through at least two receptor mechanisms: (1) direct inhibition by dopamine D2 receptors on the cholinergic neurons, and (2) excitation initiated by dopamine D1 receptors. The neuroanatomical locus of the latter population of D1 receptors and the pathway(s) involved in the expression of their influence are controversial issues....
The zona reticulata, the subdivision of the substantia nigra containing dendrites of the dopaminergic nigro-neostriatal neurons, contains dopamine-sensitive adenylate cyclase activity. This nigral dopamine receptor is similar to the striatal dopamine receptor. These and previous data suggest a physiological role (or roles) for dopamine in the substantia nigra.
Differences in water relations and total carbohydrate content between precommercially thinned unthinned Pinus nigra subsp. pallasiana stands | Ayşe Deligöz, Esra Bayar, Musa Genç, Yasin Karatepe Agricultural Journals
diabetes mellitus is one of the most common endocrine diseases and its type ii is the major form of diabetes, accounting for 90% of cases worldwide. the inhibition of carbohydrate hydrolyzing enzymes such as ?-amylase can be an important strategy in the control of blood glucose levels in patients with type ii diabetes. in this investigation, three morus species, m. alba, m. alba var. nigra and ...
this study was carried out to investigate the important characteristics in some cultivars/genotypes of persianwalnut (juglans regia l.), black walnut (j. nigra l.), and walnut inter-specific hybrids: paradox (j. hindsii × j.regia) and royal (j. hindsii × j. nigra) in kamalshahr research station in karaj in 2011-2012. in the study,vegetative vigor was evaluated based on trunk cross-sectional are...
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