نتایج جستجو برای: and decrease migration

تعداد نتایج: 16854052  

2003
Frédéric Docquier Hillel Rapoport IZA Bonn

Remittances and Inequality: A Dynamic Migration Model We develop a model of the interdependencies between migration, remittances and inequality, and investigate how migration and subsequent remittances affect inter-household inequality in the origin communities. An important feature of our model is that we take into account the impact of migration on the local (rural) labor market. Migration is...

1998
Jianxing Hu

The migration section is the reflectivity distribution modulated by the discrete Green’s function for migration. For a poorly sampled trace distribution, the Green’s function introduces noise into the migration image that can obscure its interpretation. Using this migration Green’s function and assuming shift invariance, we propose an economical method to deconvolve the Green’s function from th...

2017
Megan L Norris Andrea Pauli James A Gagnon Nathan D Lord Katherine W Rogers Christian Mosimann Leonard I Zon Alexander F Schier

Toddler/Apela/Elabela is a conserved secreted peptide that regulates mesendoderm development during zebrafish gastrulation. Two non-exclusive models have been proposed to explain Toddler function. The 'specification model' postulates that Toddler signaling enhances Nodal signaling to properly specify endoderm, whereas the 'migration model' posits that Toddler signaling regulates mesendodermal c...

Convergence hypothesis includes two types of beta and sigma. In this study, we examine convergence hypothesis among Iran’s provinces and discuss the effect of internal net migration in that context since 2000 to 2007. The results indicate that poor provinces grow faster than rich ones and there is beta convergence in Iran. About sigma convergence, we found that the dispersion of GDP per capita ...

2016
Linguère Mously Mbaye Klaus F. Zimmermann

This paper reviews the effect of natural disasters on human mobility or migration. Although there is an increase of natural disasters and migration recently and more patterns to observe, the relationship remains complex. While some authors find that disasters increase migration, others show that they have only a marginal or no effect or are even negative. Human mobility appears to be an insuran...

Journal: :iranian journal of basic medical sciences 0
zhou du department of gastrointestinal surgery, the first affiliated hospital of wenzhou medical university, wenzhou 325035, zhejiang province, china feng zhou department of gastrointestinal surgery, the first affiliated hospital of wenzhou medical university, wenzhou 325035, zhejiang province, china zengrong jia department of gastrointestinal surgery, the first affiliated hospital of wenzhou medical university, wenzhou 325035, zhejiang province, china beishi zheng department of gastrointestinal surgery, the first affiliated hospital of wenzhou medical university, wenzhou 325035, zhejiang province, china shaoliang han department of gastrointestinal surgery, the first affiliated hospital of wenzhou medical university, wenzhou 325035, zhejiang province, china jun cheng department of gastrointestinal surgery, the first affiliated hospital of wenzhou medical university, wenzhou 325035, zhejiang province, china

objective(s): the study aimed to investigate the effects of resveratrol on colorectal cancer hct116 cells, including cell viability, apoptosis, and migration, and the partial mechanisms focused on hedgehog/gli-1 signaling pathways. materials and methods: we chose the appropriate time and concentration of recombinant human sonic hedgehog (shh) stimulation by cell viability. the proportion of cel...

Abdollahipour Haghighi, Raziyeh, Arabsolghar, Rita, Golestani, Ali, Takhshid, Mohammad Ali,

Background & Objective: Cancer metastasis is the primary cause of cancer morbidity and mortality, it accounts for about 90% of cancer deaths. Cancer treatment has improved significantly, due to early detection and inhibition of cancer growth. The ability to invade and migrate is important in malignant tumor cells. The study of cell migration is valuable in cancer diagnosis, prognosis, drug dev...

1998
Julian Ivanov Richard Miller Jianghai Xia

Evaluation of this noise attenuation technique on real data conclusively shows significant improvement in data coherency and a decrease in high frequency random noise with no noticeable migration effects or artifacts. The method seems especially useful in situations where migration produces artifacts, high frequency random noise is present or where techniques such as spectral balancing have lef...

Journal: :FASEB journal : official publication of the Federation of American Societies for Experimental Biology 2011
Michael S Y Shum Eddy Pasquier Sela T Po'uha Geraldine M O'Neill Christine Chaponnier Peter W Gunning Maria Kavallaris

Cell migration plays a crucial role in numerous cellular functions, and alterations in the regulation of cell migration are required for invasive transformation of a tumor cell. While the mechanistic process of actin-based migration has been well documented, little is known as to the specific function of the nonmuscle actin isoforms in mammalian cells. Here, we present a comprehensive examinati...

2010
Tia Barclay Pamela Hanson Harald Sontheimer Valerie Bomben

Gliomas are a type of brain tumor derived from glial cells, which outnumber neurons and support neuronal activity. Glioma cells have been extensively investigated to understand mechanisms by which they proliferate and migrate; glioma cells utilize ion channels found on the cell surface to shrink and facilitate easier migration; it is believed that successful glioma cell migration is dependent o...

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