نتایج جستجو برای: mineralization trend
تعداد نتایج: 134751 فیلتر نتایج به سال:
Decomposition and nitrogen dynamics of 15N‑labeled leaf, root, and twig litter in temperate coniferous forests" (2013). USDA Forest Service / UNL Faculty Publications. Paper 253. patterns were species-specific. For multiple litter × species combinations, the difference between gross and net n mineralization was significant, and gross mineralization was 7–20 % greater than net mineralization. th...
Phosphatases are recognised to have important functions in the initiation of skeletal mineralization. Tissue-nonspecific alkaline phosphatase (TNAP) and PHOSPHO1 are indispensable for bone and cartilage mineralization but their functional relationship in the mineralization process remains unclear. In this study, we have used osteoblast and ex-vivo metatarsal cultures to obtain biochemical evide...
the iranian east magmatic assemblage (iema) in the central lut region, hosted porphyry and vein-type polymetallic mineralization. the galechah-shurab mining district is located in nw of the iema. volcanic and subvolcanic bodies in the area are composed of calc-alkaline porphyry quartz-latite, porphyry dacite and rhyodacite and hornblende-biotite andesite, equivalent to i-type granite. they empl...
Freshwater sediments are important sites of organic carbon (OC) burial and mineralization. Previous studies indicate that warming can increase rates of OC mineralization, implying more CO2 release from sediments and, consequently, less OC burial, but temperatures typical of tropical ecosystems are poorly represented in the models of temperature and OC mineralization. We measured OC mineralizati...
Shifts in nitrogen (N) mineralization and nitrification rates due to global changes can influence nutrient availability, which can affect terrestrial productivity and climate change feedbacks. While many single-factor studies have examined the effects of environmental changes on N mineralization and nitrification, few have examined these effects in a multifactor context or recorded how these ef...
The Kamar-Mehdi fluorite deposit is located 100 km southwest of Tabas in Tabas Block, Central Iran. There are five stratabound orebodies in the area exposing in carbonate rocks of Shotori Formation. The oldest unit is Shotori Formation dolomite of Triassic age that is emplaced in the core of Kamar-Mehdi Anticline. Folding direction in the area is N-S and normal faults with W-E direction have ca...
Many proteins in the inorganic/organic matrix of bone induce or modulate or inhibit mineralization of apatite in vivo. Many attempts have been made to mimic and understand this mechanism as part of bone formation, and ectopic mineralization and control thereof. Many attempts have also been made to use such proteins or protein fragments to harness their potential for improved mineralization. Suc...
Annexins II, V and VI are highly expressed by hypertrophic and terminally differentiated growth plate chondrocytes and by osteoblasts. Because of the localization of annexins in areas of cartilage and bone mineralization, we hypothesized that these annexins play a regulatory role in the mineralization process. In this article we review the function of annexins II, V and VI in physiological mine...
In the present study we have determined the suitability of platelet-rich fibrin (PRF) as a complex scaffold for periodontal tissue regeneration. Replacing PRF with its major component fibrin increased mineralization in alveolar bone progenitors when compared to periodontal progenitors, suggesting that fibrin played a substantial role in PRF-induced osteogenic lineage differentiation. Moreover, ...
The Lut Block is a potential porphyry-style mineralized region in Iran including the well-explored Shadan porphyry gold-copper deposit, which has an extensive zone of gold- and copper-bearing stockwork-like sheeted veins. structural setting this deposit key to understanding genesis mineralization. Our field studies show that mineralization occurs as steeply dipping ore bodies along NW–SE transp...
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