نتایج جستجو برای: q15
تعداد نتایج: 199 فیلتر نتایج به سال:
TEL/ETV6 is the first transcription factor identified that is specifically required for hematopoiesis within the bone marrow. This gene has been found to have multiple fusion partners; 35 different chromosome bands have been involved in ETV6 translocations, of which 13 have been cloned. To identify additional ETV6 partner genes and to characterize the chromosomal abnormalities more fully, we st...
We compare outcomes across two types of villages in a poor region of rural India. The two types of villages systematically vary by which caste is dominant, i.e., the caste group which owns the majority of land. The dominant caste is either from an upper caste or a lower backward caste. The key finding is that income is substantially higher for low caste households residing in villages dominated...
While the regulation of tenancy arrangements is widespread in the developing world, evidence on how such regulation influences the long-run allocation of land and labor remains limited. To provide such evidence, this paper exploits quasi-random assignment of linguistically similar areas to different South Indian states and historical variation in landownership across social groups. Roughly thir...
This paper analyses the determinants of household farms’ participation in land rental markets in transition countries and what affects their access to land through rental markets. We derive several theoretical hypotheses on the impact of households’ management ability, land endowment, land quality and prices, transaction costs in the land market, rural credit and labour market constraints. We t...
The confluence of factors driving urban growth is highly complex, resulting from a combination of ecological and social determinants that co-evolve over time and space. Identifying these factors and quantifying their impact necessitates models that capture both why urbanization happens as well as where and when it happens. Using a database that links five satellite images spanning 1976–2001 to ...
Total community DNA from 29 noncontaminated soils and soils impacted by petroleum hydrocarbons and chloro-organics from Antarctica and Brazil were screened for the presence of nine catabolic genes, encoding alkane monooxygenase or aromatic dioxygenases, from known bacterial biodegradation pathways. Specific primers and probes targeting alkane monooxygenase genes were derived from Pseudomonas pu...
Huntington's disease is a neurodegenerative disorder resulting from expansion of a polyglutamine tract in the Huntingtin protein. Mutant Huntingtin forms intracellular aggregates within neurons, although it is unclear whether aggregates or more soluble forms of the protein represent the pathogenic species. To examine the link between aggregation and neurodegeneration, we generated Drosophila me...
Human protein 4.2 (P4.2) is a major membrane skeletal protein in erythrocytes. Individuals with P4.2 deficiency exhibit spherocytosis and experience various degrees of hemolytic anemia, suggesting a role for this protein in maintaining stability and integrity of the membrane. Molecular cloning of P4.2 cDNAs showed that P4.2 is a transglutaminaselike molecule in erythrocytes but lacks the essent...
زمین یک منبع طبیعی و عمدهترین عامل تولید است. استفاده یا عدم استفاده، ارائه یا عدم ارائه و همچنین نوع و میزان استفاده از زمین، از طریق مفاهیمی چون تابع عرضه و تقاضای زمین، قیمت زمین و مقولههایی شبیه به آن توضیح داده میشود. زمین کالایی است که هم از لحاظ مکانی و هم از لحاظ کیفیت، ناهمگن است. زمین به عنوان طبیعت، عامل تولید، کالای مصرفی، موقعیت جغرافیایی، فضا، حقوق دارایی و سرمایه نیز نام برده ...
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