393 research outputs found
The Effect of Financial Resources on Fertility: Evidence from Administrative Data on Lottery Winners
This paper utilizes wealth shocks from winning lottery prizes to examine the
effect of financial resources on fertility. Using administrative data on
Taiwanese lottery winners and a difference-in-differences design, we compare
the trend in fertility between households receiving lottery prizes of more than
1 million NT) with those winning less than 10,000 NT).
The results show that the receipt of a big lottery prize significantly
increases fertility, and effects are driven by households with less financial
resources. Moreover, big lottery wins mainly trigger childless households to
have children and induce people to get married earlier
(Z)-4-(2-Hydroxybenzylidene)-1-methyl-2-phenyl-1H-imidazol-5(4H)-one
In the title compound, C17H14N2O2, the asymmetric unit comprises two molecules that are comformationally similar [the dihedral angles between the phenyl rings in each are 46.35 (2) and 48.04 (3)°], with the conformation stabilized by intramolecular O—H⋯N hydrogen bonds, which generate S(7) rings. In the crystal, inversion-related molecules are linked by pairs of weak C—H⋯O hydrogen bonds, forming dimers with an R
2
2(16) graph-set motif. Weak inter-ring π–π stacking is observed in the structure, the shortest centroid-to-centroid distance being 3.7480 (13) Å
Hydrothermal–galvanic couple synthesis of directionally oriented BaTiO3 thin films on TiN-coated substrates
AbstractBaTiO3 films were synthesized on TiN-coated Si substrate below 100°C by a hydrothermal–galvanic couple technique in barium contained alkaline solutions. X-ray diffraction and electron backscatter diffraction results show that the BaTiO3 thin films were directionally oriented grown on the TiN/Si substrates, i.e., (111) BaTiO3 over (111) TiN. The surface morphologies revealed that BaTiO3 nucleated and grew over the TiN surface with a single layer. From kinetic analyses, the growth rates of BaTiO3 films prepared by the hydrothermal–galvanic couple technique were faster than a hydrothermal method. The galvanic effects were confirmed by investigating the induced currents and energies. The galvanic currents were generated and controlled by both the dissolution of TiN and the formation of BaTiO3. The output electric energies increased rapidly with the reaction time and leveled off at the full coverage of BaTiO3
(E)-4-[(4-Diethylamino-2-hydroxybenzylidene)amino]benzonitrile
The title compound, C18H19N3O, displays an E conformation with respect to the C=N double bond. The dihedral angle between the mean planes of the two benzene rings is 24.49 (3)°. An intramolecular O—H⋯N hydrogen bond generates an S(6) ring. In the crystal, molecules are linked by nonclassical intermolecular C—H⋯O hydrogen bonds to form an infinite one-dimensional chain along [010], generating a C(8) motif
A White-Light-Emitting Small Molecule: Synthesis, Crystal Structure, and Optical Properties
A white-light-emitting small molecule (1) was synthesized and characterized by single-crystal X-ray diffraction. Compound 1 undergoes an excited-state intramolecular proton transfer (ESIPT) reaction, resulting in a tautomer that is in equilibrium with the normal species and exhibiting a dual emission that covers almost all of the visible spectrum, and consequently generates white light. Furthermore, the geometric structures, the frontier molecular orbitals (MOs), and the potential energy curves for 1 in the ground and the first singlet excited state were fully rationalized by density functional theory (DFT) and time-dependent DFT calculations. The results show that the forward ESIPT and backward ESIPT may happen on the same timescale, enabling the excited-state equilibrium to be established
The potential impact of primary headache disorders on stroke risk
Distribution of PHDs. (DOC 55 kb
The risk of false inclusion of a relative in parentage testing – an in silico population study
Aim To investigate the potential of false inclusion of a
close genetic relative in paternity testing by using computer
generated families.
Methods 10 000 computer-simulated families over three
generations were generated based on genotypes using 15
short tandem repeat loci. These data were used in assessing
the probability of inclusion or exclusion of paternity
when the father is actually a sibling, grandparent, uncle,
half sibling, cousin, or a random male. Further, we considered
a duo case where the mother’s DNA type was not
available and a trio case including the mother’s profile.
Results The data showed that the duo scenario had the
highest and lowest false inclusion rates when considering
a sibling (19.03 ± 0.77%) and a cousin (0.51 ± 0.14%) as
the father, respectively; and the rate when considering a
random male was much lower (0.04 ± 0.04%). The situation
altered slightly with a trio case where the highest rate
(0.56 ± 0.15%) occurred when a paternal uncle was considered
as the father, and the lowest rate (0.03 ± 0.03%) occurred
when a cousin was considered as the father. We also
report on the distribution of the numbers for non-conformity
(non-matching loci) where the father is a close genetic
relative.
Conclusions The results highlight the risk of false inclusion
in parentage testing. These data provide a valuable
reference when incorporating either a mutation in the father’s
DNA type or if a close relative is included as being
the father; particularly when there are varying numbers of
non-matching loci
A novel strategy for sibship determination in trio sibling model
Aim To use a virtually simulated population, generated
from published allele frequencies based on 15 short tandem
repeats (STR), to evaluate the efficacy of trio sibship
testing and sibling assignment for forensic purposes.
Methods Virtual populations were generated using 15 STR
loci to create a large number of related and unrelated genotypes
(10 000 trio combinations). Using these virtual populations,
the probability of related and unrelated profiles
can be compared to determine the chance of inclusions
of being siblings if they are true siblings and the chance of
inclusion if they are unrelated. Two specific relationships
were tested – two reference siblings were compared to a
third true sibling (3S trio, sibling trio) and two reference siblings
were compared to an unrelated individual (2S1U trio,
non-sibling trio).
Results When the likelihood ratio was greater than 1,
99.87% of siblings in the 3S trio population were considered
as siblings (sensitivity); 99.88% of non-siblings in the
2S1U trio population were considered as non-siblings
(specificity); 99.9% of both populations were identified correctly
as siblings and non-siblings; and the accuracy of the
test was 99.88%.
Conclusions The high sensitivity and specificity figures
when using two known siblings compared to a putative
sibling are significantly greater than when using only one
known relative. The data also support the use of increasing
number of loci allowing for greater confidence in genetic
identification. The system established in this study could
be used as the model for evaluating and simulating the
cases with multiple relatives
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