117 research outputs found
Analisis Laporan Arus Kas sebagai Alat Ukur Menilai Kinerja pada PT. Pegadaian (Persero) Cabang Manado Timur
Laporan arus kas merupakan alat yang digunakan untuk mengetahui seberapa besar kas yang telah digunakan untuk membiayai operasi Perusahaan, apakah pengalokasian aliran kas masuk dan aliran kas keluar tepat dan efisien. Dengan adanya analisa laporan arus kas ini, maka akan dapat membantu pihak-pihak yang berkepentingan baik pihak intern seperti pemegang saham, Pihak Manajemen maupun pihak-pihak ekstern seperti Pemerintah, kreditur dan untuk mengetahui darimana diperoleh sumber kas dan bagaimana penggunaan kas tersebut serta dapat membantu pihak-pihak tersebut dalam mengambil keputusan. Didalam penelitian ini teknik analisis data yang digunakan adalah Analisis Deskriptif. Hasil penelitian pada PT. Pegadaian(Persero) Cabang Manado Timur merupakan Perusahaan yang bergerak dalam bidang pembiayaan gadai. Hasil evaluasi pada dasarnya aktivitas Perusahaan dalam hal ini adalah baik karena sumber kas yang terbesar berasal dari aktivitas operasi yaitu laba bersih yang merupakan sumber kas utama bagi Perusahaan. Pembelian Pembangkit Listrik dan Pemeliharaanya berpotensi mengurangi harta Perusahaan, serta jumlah kas yang menganggur pada Perusahaan selama 2 tahun. Dengan demikian Perusahaan perlu memperhatikan Efesiensi kas untuk menghindari terjadinya kerugian dan juga menghindari jumlah kas yang menganggur. Kata kunci: laporan arus kas, kinerja keuanga
Cation−π Interactions between Flame Chemi-ions and Aromatic Compounds
The
cation−π interactions in complexes that could
be formed from the association of flame-generated chemi-ions with
neutral aromatic molecules, including benzene, naphthalene, phenanthrene,
and pyrene, were examined by electronic structure calculations using
the MP2 and B3LYP methods with the 6-311++GÂ(d,p) basis set. Single-point
CCSDÂ(T) calculations were also made on the MP2 geometries. The cations
considered are CHO<sup>+</sup>, C<sub>3</sub>H<sub>3</sub><sup>+</sup>, and H<sub>3</sub>O<sup>+</sup>. The purpose was to examine the
possibility of chemi-ion enhanced aromatic bindings as a viable path
to aromatic clustering at high temperatures or soot nucleation in
flames. Although the binding energies of the complexes computed using
the B3LYP and MP2 methods can be quite different, both suggest that
the binding remains too weak for these complexes to survive at high
temperatures for an appreciable period of time and, thus, to be related
to aromatic clustering and soot nucleation in any way. Potential energy
surfaces were examined for the reactions of benzene with all three
cations and of pyrene with CHO<sup>+</sup>. The results show chemically
activated proton transfer from CHO<sup>+</sup> and H<sub>3</sub>O<sup>+</sup> to benzene to be the dominant reaction path. Taken together,
we conclude that chemi-ions play no role other than protonating aromatic
molecules
Excitonic Effect Drives Ultrafast Transition in Two-Dimensional Transition Metal Dichalcogenides
Two-dimensional
(2D) transition metal dichalcogenides
(TMDCs) are
ideal platforms for exploring excitonic physics because of the tightly
bound excitons. In this work, we observed the onset of band-edge exciton
formation in monolayer MoS2 (WS2) and bilayer
MoS2–WS2 by measuring the transient optical
response upon excitation with ultrashort laser pulses. In addition
to wavelength dependence on excitation under nonresonant excitation,
we found that the onset of band-edge exciton formation in monolayer
MoS2 (WS2) pumped in the exciton state is significantly
faster than that with pumping in the nonexciton state, which could
be attributed to the effective transition between exciton states induced
by the excitonic effect. Besides, the onset of band-edge exciton formation
in van der Waals heterostructures is similar to that for monolayer
TMDCs regardless of charge transfer at the interface. Our work contributes
to a better understanding of exciton dynamics in 2D TMDCs, providing
a solid basis of the rational design of the 2D optoelectronic applications
based on TMDCs
Phase Transition Mechanism of Poly(l‑lactic acid) among the α, δ, and β Forms on the Basis of the Reinvestigated Crystal Structure of the β Form
The crystal structure of polyÂ(l-lactic acid) β form
has been reinvestigated on the basis of the 2-dimensional X-ray diffraction
diagram measured for the sample obtained by stretching the highly
crystalline α form at a high temperature. The six helical chains
of (3/1) conformation are packed in a rectangular unit cell of the
space group <i>P</i>1 with the complicated but systematic
packing mode of the upward and downward chains. This structural model
is different from the previously reported trigonal model [Puiggali Polymer 2000, 41, 8921].
The structural phase transition mechanism from the α form to
the β form via the δ form has been proposed by assuming
the cooperative displacements of the upward and downward helical chains
as well as the conformational change. To support this mechanism, the
two types of experiments were performed: (i) The highly oriented regular
α form was stretched at about 165 °C to the various drawing
ratios and cooled to the room temperature with the sample length fixed
constantly. The X-ray diffraction data of these samples revealed the
transition from the α to the mechanically deformd α (α<sub>d</sub>), to the δ form, and then to the β form depending
on the drawing ratio. (ii) The α sample was suspended vertically
with a constant load in the heating process, and the X-ray diffraction
pattern was measured as a function of time (temperature). The original
α form was found to melt at about 200 °C via the transition
to the α<sub>d</sub> form and then to the δ form, followed
by the recrystallization into the highly oriented β form. From
these two experiments, the tension-induced structural transition from
the α to the β form was found to occur via the disordering
of the α form to the α<sub>d</sub> and to δ form
under tension. The structural change process was derived on the basis
of all of the knowledge collected from the X-ray structure analysis
and the <i>ex-situ</i> and <i>in-situ</i> X-ray
diffraction measurements: the molecular chains experience the cooperative
translational slippage along the diagonal directions in the <i>ab</i>-plane to give the complicatedly mixed packing of the
upward and downward chains to give the characteristic structure of
the β form. At the same time, the chain conformational changes
from the regular (10/3) to the disordered (10/3) and then to the (3/1)
form during the disordering in the chain packing mode
GFP analyses of different vector transformed protoplasts.
<p>(A) Confocal microscopy of the transformed protoplasts. Green signals indicate cleaved GFP. The scale bar represents 100 μm. (B) Quantification of GFP expression. The amount GFP expression in each form of vector was estimated from its fluorescence intensity measured by Image J software.</p
Meta-Analysis of Stenting versus Non-Stenting for the Treatment of Ureteral Stones
<div><p>Background and aim</p><p>Ureteroscopic lithotripsy (URL) and extracorporeal shock wave lithotripsy (ESWL) are two widely used methods for the treatment of ureteral stones. The need for ureteral stenting during these procedures is controversial. In this meta-analysis, we evaluated the benefits and disadvantages of ureteral stents for the treatment of ureteral stones.</p><p>Methods</p><p>Databases including PubMed, Embase and Cochrane library were selected for systematic review of randomized controlled trials (RCTs) comparing outcomes with or without stenting during URL and ESWL. Meta-analysis was performed using RevMan 5.3 and STATA 13.0 software.</p><p>Results</p><p>We identified 22 RCTs comparing stenting and non-stenting. The stented group was associated with longer operation time (WMD: 4.93; 95% CI: 2.07 to 7.84; <i>p</i> < 0.001), lower stone-free rate (OR: 0.55; 95% CI: 0.34 to 0.89; <i>p</i> = 0.01). In terms of complications, the incidence of hematuria (OR: 3.68; 95% CI: 1.86 to 7.29; <i>p</i> < 0.001), irritative urinary symptoms (OR: 4.40; 95% CI: 2.19 to 9.10; <i>p</i> < 0.001), urinary infection (OR: 2.23; 95% CI: 1.57 to 3.19; <i>p</i> < 0.001), and dysuria (OR: 3.90; 95% CI: 2.51 to 6.07; <i>p</i> < 0.001) were significantly higher in the stented group. No significant differences in visual analogue score (VAS), stricture formation, fever, or hospital stay were found between stenting and non-stenting groups. The risk of unplanned readmissions (OR: 0.63; 95% CI: 0.41 to 0.97; <i>p</i> = 0.04) was higher in the non-stented group.</p><p>Conclusions</p><p>Our analysis showed that stenting failed to improve the stone-free rate, and instead, it resulted in additional complications. However, ureteral stents are valuable in preventing unplanned re-hospitalization. Additional randomized controlled trials are still required to corroborate our findings.</p></div
Additional file 1: of RETRACTED ARTICLE: Association between serum vitamin D levels and the risk of kidney stone: evidence from a meta-analysis
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The report proteins’ sublocalization after protoplast transformations with different vectors.
<p>The report proteins’ sublocalization after protoplast transformations with different vectors.</p
Theory and Experiment of Binary Diffusion Coefficient of <i>n</i>‑Alkanes in Dilute Gases
Binary
diffusion coefficients were measured for <i>n</i>-pentane, <i>n</i>-hexane, and <i>n</i>-octane
in helium and of <i>n</i>-pentane in nitrogen over the temperature
range of 300 to 600 K, using reversed-flow gas chromatography. A generalized,
analytical theory is proposed for the binary diffusion coefficients
of long-chain molecules in simple diluent gases, taking advantage
of a recently developed gas-kinetic theory of the transport properties
of nanoslender bodies in dilute free-molecular flows. The theory addresses
the long-standing question about the applicability of the Chapman-Enskog
theory in describing the transport properties of nonspherical molecular
structures, or equivalently, the use of isotropic potentials of interaction
for a roughly cylindrical molecular structure such as large normal
alkanes. An approximate potential energy function is proposed for
the intermolecular interaction of long-chain <i>n</i>-alkane
with typical bath gases. Using this potential and the analytical theory
for nanoslender bodies, we show that the diffusion coefficients of <i>n</i>-alkanes in typical bath gases can be treated by the resulting
analytical model accurately, especially for compounds larger than <i>n</i>-butane
Movie S1.wmv from Design of rigid-foldable doubly curved origami tessellations based on trapezoidal crease patterns
An animation of the folding motion of the second exampl
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