نتایج جستجو برای: diversifications

تعداد نتایج: 176  

Journal: :Sustainability 2023

Banks represent important subjects in business, with dominant positions the financial system world. developed various products and services that can cover most market needs. As a result of adequate portfolio diversifications, banks recorded positive profitability rates. In addition to being adjusted competition, should also focus on environment. Therefore, have recognized an opportunity offer g...

2011
Lei Zhong Dengqiang Wang Xiaoni Gan Tong Yang Shunping He

Group B of the Sox transcription factor family is crucial in embryo development in the insects and vertebrates. Sox group B, unlike the other Sox groups, has an unusually enlarged functional repertoire in insects, but the timing and mechanism of the expansion of this group were unclear. We collected and analyzed data for Sox group B from 36 species of 12 phyla representing the major metazoan cl...

Ali Hassen Reta Hailu

This article examines the livelihood strategies of land scarce peasants in Ethiopian. Land scarce peasants have a limited livelihood security on a sustainable manner and bypassed by major development programmes. The study was centred on two sets of rationales. First, for those peasants who do not have sufficient farmland, agriculture provides only a limited portion of households’ livelihood...

Journal: :Palaeogeography, Palaeoclimatology, Palaeoecology 2021

Data from a new comprehensive macrofossil-based compilation of early plant genera are analyzed via Q-mode factor analysis. This ranges the Silurian to earliest Carboniferous and illustrates key vegetation changes that took place during configuration terrestrial ecosystems. Results reveal four factors can be used explain more than 90% variance in data. These interpreted as major phases land evol...

Journal: :Proceedings. Biological sciences 2016
Jennifer F Hoyal Cuthill Kim B Sewell Lester R G Cannon Michael A Charleston Susan Lawler D Timothy J Littlewood Peter D Olson David Blair

Australian spiny mountain crayfish (Euastacus, Parastacidae) and their ecotosymbiotic temnocephalan flatworms (Temnocephalida, Platyhelminthes) may have co-occurred and interacted through deep time, during a period of major environmental change. Therefore, reconstructing the history of their association is of evolutionary, ecological, and conservation significance. Here, time-calibrated Bayesia...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Lin Na Wolfgang Kiessling

The fossil record offers unique insights into the environmental and geographic partitioning of biodiversity during global diversifications. We explored biodiversity patterns during the Cambrian radiation, the most dramatic radiation in Earth history. We assessed how the overall increase in global diversity was partitioned between within-community (alpha) and between-community (beta) components ...

Journal: :Proceedings. Biological sciences 2012
Mario dos Reis Jun Inoue Masami Hasegawa Robert J Asher Philip C J Donoghue Ziheng Yang

The fossil record suggests a rapid radiation of placental mammals following the Cretaceous-Paleogene (K-Pg) mass extinction 65 million years ago (Ma); nevertheless, molecular time estimates, while highly variable, are generally much older. Early molecular studies suffer from inadequate dating methods, reliance on the molecular clock, and simplistic and over-confident interpretations of the foss...

2017
Panos G. Kalatzis Nanna Rørbo Daniel Castillo Jesper Juel Mauritzen Jóhanna Jørgensen Constantina Kokkari Faxing Zhang Pantelis Katharios Mathias Middelboe

Nineteen Vibrio anguillarum-specific temperate bacteriophages isolated across Europe and Chile from aquaculture and environmental sites were genome sequenced and analyzed for host range, morphology and life cycle characteristics. The phages were classified as Siphoviridae with genome sizes between 46,006 and 54,201 bp. All 19 phages showed high genetic similarity, and 13 phages were genetically...

2016
Holger Apitz Iris Salecker

Differences in neuroepithelial patterning and neurogenesis modes contribute to area-specific diversifications of neural circuits. In the Drosophila visual system, two neuroepithelia, the outer (OPC) and inner (IPC) proliferation centers, generate neuron subtypes for four ganglia in several ways. Whereas neuroepithelial cells in the medial OPC directly convert into neuroblasts, in an IPC subdoma...

Journal: :Plant and Soil 2021

Abstract Purpose Diversification practices such as intercropping in woody cropping systems have recently been proposed a promising management strategy for addressing problems related to soil degradation, climate change mitigation and food security. In this study, we assess the impact of several diversification different regimes on main carbon fluxes regulating balance under semiarid Mediterrane...

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