Results 21 to 30 of about 499,252 (266)

Selection, selection, selection: the impact of return migration [PDF]

Journal of Population Economics, 2015
The evidence on the impact of return migration on the sending country is rather sparse, though growing. The contribution of this paper is in addressing various selectivity problems while quantifying the impact of return migration on wages of returnees using non-experimental data.
openaire   +3 more sources

A Framework for Selecting a Selection Procedure [PDF]

ACM Transactions on Modeling and Computer Simulation, 2012
For many discrete simulation optimization applications, it is often difficult to decide which Ranking and Selection (R&S) procedure to use. To efficiently compare R&S procedures, we present a three-layer performance evaluation process.
Rolf Waeber, Peter I. Frazier, Shane G. Henderson   +2 more
openaire   +2 more sources

CD34: To select or not to select? That is the question [PDF]

Leukemia, 2000
Recent evidence suggests that expression of CD34 on the cell membrane does not always correlate with stem cell activity. In the mouse, there is a highly quiescent population of stem cells that lacks CD34 expression, but has full reconstituting capacity.
M A, Dao, J A, Nolta
openaire   +2 more sources

A New Class of High-Selectivity Bandpass Filters With Constant Bandwidth and 5:1 Bandwidth Tuning Ratio

IEEE Access
This paper presents a design for compact bandpass filters (BPFs) that feature high selectivity. This high selectivity is achieved through the use of open-/short-circuited coupled-line segments at the filter’s input and output and a pair of ...
Photos Vryonides, Salman Arain, Abdul Quddious, Dimitra Psychogiou, Symeon Nikolaou   +4 more
doaj   +1 more source

Ação transovariana de lufenuron (50 g/l) sobre adultos de Spodoptera Frugiperda (j. e. smith) (Lepidoptera: Noctuidae) e seu efeito sobre o parasitóide de ovos Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) Transovarian action of lufenuron on adults of Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) and its effect on the parasitoid Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae)

Ciência e Agrotecnologia, 2004
Avaliaram-se a ação transovariana do lufenuron em Spodoptera frugiperda e sua seletividade ao parasitóide de ovos Trichogramma pretiosum. Casais da praga foram isolados em gaiolas de PVC e alimentados com solução de mel a 10% na testemunha, e nos outros ...
Dirceu Pratissoli, Robson Thomaz Thuler, Fabrício Fagundes Pereira, Edvaldo Fialho dos Reis, Andrea Torres Ferreira   +4 more
doaj   +1 more source

Molecular Dynamics-Assisted Discovery of Novel Phosphodiesterase-5 Inhibitors Targeting a Unique Allosteric Pocket

Molecules
Phosphodiesterase-5 (PDE5) is a potent therapeutic target for the treatment of male erectile dysfunction and pulmonary arterial hypertension with several drugs available on the market.
Weihao Luo, Runduo Liu, Xinlin Cai, Qian Zhou, Chen Zhang   +4 more
doaj   +1 more source

Lethal effects of insecticides on adults of Eriopis connexa (Germar, 1824) (Coleoptera: Coccinellidae)

Entomological Communications, 2022
The predator Eriopis connexa (Germar, 1824) (Coleoptera: Coccinelidae), is an important biological control agent in wheat fields. In this work, we evaluated the lethal effects of fifteen insecticides used in the wheat crop on adults of the predator E ...
Rafael A. Pasini, Matheus Rakes, Franciele S. De Armas, Juliano de B. Pazini, Anderson D. Grützmacher   +4 more
doaj   +1 more source

Polyacrylonitrile/Crown Ether Composite Nanofibres With High Efficiency for Adsorbing Li(I): Experiments and Theoretical Calculations

Frontiers in Energy Research, 2021
Lithium, as the lightest alkali metal, is widely used in military and new energy applications. With the rapid growth in demand for lithium resources, it has become necessary to improve the effectiveness of extraction thereof.
Tao Ding, Qian Wu, Mianping Zheng, Zhen Nie, Min Li, Suping Peng, Yunsheng Wang, Xudong Yu, Cheng Qian, Si Tang, Mingliang Wang   +10 more
doaj   +1 more source

Efficient Cataluminescence Sensor for Detecting Methanol Based on NiCo₂O₄//MIL-Ti₁₂₅ Polyhedral Composite Nano-Materials

Chemosensors
Since methanol has a significant health hazard due to its inherent toxicity, it is urgent to develop a method capable of rapid, sensitive, and continuous monitoring of methanol.
Hongyan Wang, Ziyu Shao, Mao Cai, Guoji Shi, Bai Sun   +4 more
doaj   +1 more source

UNBINDING OF SURFACE DEFECTS UNDER THE DEFECT-SELECTIVE ADSORPTION

Condensed Matter Physics, 2003
Unbinding of surface topological defects in the presence of the defect-selective adsorption is investigated using a coupled Coulomb Gas - Lattice Gas model. The unbinding temperature increases with the increasing selectivity (and coverage) for both, sign-
E.V.Vakarin
doaj   +1 more source