1,090 research outputs found
PENGARUH HUBUNGAN PELANGGAN TERHADAP PERILAKU LOYALITAS DIMEDIASIKAN OLEH RASA TERIMA KASIH PELANGGAN PADA KONSUMEN MEMBER SUZUYA MALL BANDA ACEH
ABSTRAKPenelitian ini bertujuan untuk mengukur pengaruh Hubungan Pelangganterhadap Perilau Loyalitas dengan Rasa Terima Kasih Pelanggan sebagai variabelmediasi pada konsumen member Suzuya Mall di Kota Banda Aceh. Sampel yangdigunakan dalam penelitian ini adalah konsumen member Suzuya Mall BandaAceh yang berjumlah 100 responden. Peralatan pengumpulan data yangdigunakan pada penelitian ini adalah kuisioner. Teknik pengambilan sampel yangdigunakan adalah Purposive Sampling. Hierarchical Linear Modelling (HLM)digunakan sebagai metode analisis untuk mengetahui pengaruh dari semuavariabel-variabel yang terlibat. Berdasarkan hasil analisis HLM ditemukanhubungan pelanggan berpengaruh positif terhadap perilaku loyalitas, hubunganpelanggan berpengaruh positif terhadap rasa terima kasih pelanggan, dan terdapatpengaruh positif hubungan pelanggan terhadap perilaku loyalitas yangdimediasikan oleh rasa terima kasih pelanggan.Kata Kunci: Hubungan Pelanggan, Rasa Terima Kasih Pelanggan, PerilakuLoyalitas, Hierarchical Linear Modellin
Probing the Ionic Dielectric Constant Contribution in the Ferroelectric Phase of the Fabre-Salts
In strongly correlated organic materials it has been pointed out that
charge-ordering could also achieve electronic ferroelectricity at the same
critical temperature . A prototype of such phenomenon are the quasi-one
dimensional (TMTTF) Fabre-salts. However, the stabilization of a
long-range ferroelectric ground-state below requires the break of
inversion symmetry, which should be accompanied by a lattice deformation. In
this work we investigate the role of the monovalent counter-anion in such
mechanism. For this purpose, we measured the quasi-static dielectric constant
along the -axis direction, where layers formed by donors and anions
alternate. Our findings show that the ionic charge contribution is three orders
of magnitude lower than the intra-stack electronic response. The
dielectric constant () probes directly the charge response of
the monovalent anion , since the anion mobility in the structure should help
to stabilize the ferroelectric ground-state. Furthermore, our
measurements %conjugated with earlier investigations of the lattice
thermal expansion, show that the dielectric response is thermally broaden below
if the ferroelectric transition occurs in the temperature range where
the anion movement begin to freeze in their methyl groups cavity. In the
extreme case of the PF-H salt, where occurs at the freezing
point, a relaxor-type ferroelectricity is observed. Also, because of the slow
kinetics of the anion sub-lattice, global hysteresis effects and reduction of
the charge response upon successive cycling are observed. In this context, we
propose that anions control the order-disorder or relaxation character of the
ferroelectric transition of the Fabre-salts.Comment: 8 pages, 7 figures. To appear in Physical Review
Evidence for Lattice Effects at the Charge-Ordering Transition in (TMTTF)X
High-resolution thermal expansion measurements have been performed for
exploring the mysterious "structureless transition" in (TMTTF)X (X =
PF and AsF), where charge ordering at coincides with the
onset of ferroelectric order. Particularly distinct lattice effects are found
at in the uniaxial expansivity along the interstack
-direction. We propose a scheme involving a charge
modulation along the TMTTF stacks and its coupling to displacements of the
counteranions X. These anion shifts, which lift the inversion symmetry
enabling ferroelectric order to develop, determine the 3D charge pattern
without ambiguity. Evidence is found for another anomaly for both materials at
0.6 indicative of a phase transition
related to the charge ordering
Low temperature structural effects in the (TMTSF)PF and AsF Bechgaard salts
We present a detailed low-temperature investigation of the statics and
dynamics of the anions and methyl groups in the organic conductors
(TMTSF)PF and (TMTSF)AsF (TMTSF :
tetramethyl-tetraselenafulvalene). The 4 K neutron scattering structure
refinement of the fully deuterated (TMTSF)PF-D12 salt allows locating
precisely the methyl groups at 4 K. This structure is compared to the one of
the fully hydrogenated (TMTSF)PF-H12 salt previously determined at the
same temperature. Surprisingly it is found that deuteration corresponds to the
application of a negative pressure of 5 x 10 MPa to the H12 salt. Accurate
measurements of the Bragg intensity show anomalous thermal variations at low
temperature both in the deuterated PF and AsF salts. Two different
thermal behaviors have been distinguished. Low-Bragg-angle measurements reflect
the presence of low-frequency modes at characteristic energies {\theta} =
8.3 K and {\theta} = 6.7 K for the PF-D12 and AsF-D12 salts,
respectively. These modes correspond to the low-temperature methyl group
motion. Large-Bragg-angle measurements evidence an unexpected structural change
around 55 K which probably corresponds to the linkage of the anions to the
methyl groups via the formation of F...D-CD2 bonds observed in the 4 K
structural refinement. Finally we show that the thermal expansion coefficient
of (TMTSF)PF is dominated by the librational motion of the PF
units. We quantitatively analyze the low-temperature variation of the lattice
expansion via the contribution of Einstein oscillators, which allows us to
determine for the first time the characteristic frequency of the PF6
librations: {\theta} = 50 K and {\theta} = 76 K for the PF-D12 and
PF-H12 salts, respectively
Pengaruh Perbandingan Kulit Jeruk Purut (Citrus hystrix DC.) dan Daun Sirsak (Annona muricata L.) terhadap Karakteristik Teh Celup Herbal dengan Pemanis Alami Bubuk Stevia (Stevia rebaudiana Bertoni)
PENGARUH PERBANDINGAN KULIT JERUK PURUT (Citrus hystrix DC.) DAN DAUN SIRSAK (Annona muricata L.) TERHADAP KARAKTERISTIK TEH CELUP HERBAL DENGAN PEMANIS ALAMI BUBUK STEVIA (Stevia rebaudiana Bertoni)
Foury Rahmiza1, Tuty Anggraini2, Purnama Dini Hari2
ABSTRAK
Penelitian ini bertujuan untuk mengetahui pengaruh perbandingan daun sirsak dan kulit jeruk purut dengan pemanis bubuk daun stevia dan tingkat perbandingan kulit jeruk purut dan daun sirsak terbaik berdasarkan karakteristik kimia dan organoleptik teh celup herbal. Penelitian ini dengan menggunakan metode Rancangan Acak Lengkap (RAL) dengan 5 perlakuan dan 3 ulangan yaitu perbandingan teh daun sirsak dan kulit jeruk purut dengan konsentrasi A (100% : 0%), B (75% : 25%), C (70% : 30%), D (65% : 35%), dan E (60% : 40%). Data penelitian dianaisis secara statistik menggunakan ANOVA kemudian dilanjutkan dengan analisis Duncan’s Multiple Range Test (DMRT) pada taraf nyata 5%. Hasil penelitian menunjukkan bahwa perbandingan kulit jeruk purut dan daun sirsak berpengaruh nyata terhadap total polifenol, dan uji organoleptik warna dan aroma. Perlakuan terbaik pada penelitian ini adalah perlakuan C (70% : 30%), analisis kimia teh celup herbal dengan rata-rata kadar air (7,41%), aktivitas antioksidan (65,39%), total polifenol (73,77 mg GAE/g), dan pada seduhan teh nilai pH (5,73) dan nilai IC50 (28,46 ppm). Sedangkan berdasarkan nilai penerimaan organoleptik dengan rata-rata nilai yaitu warna 3,85 (suka), rasa 3,15 (biasa), dan aroma 3,65 (suka).
Kata kunci: antioksidan, bubuk daun stevia, daun sirsak, kulit jeruk purut, teh celup herba
Resonant inelastic x-ray scattering probes the electron-phonon coupling in the spin-liquid kappa-(BEDT-TTF)2Cu2(CN)3
Resonant inelastic x-ray scattering at the N K edge reveals clearly resolved
harmonics of the anion plane vibrations in the kappa-(BEDT-TTF)2Cu2(CN)3
spin-liquid insulator. Tuning the incoming light energy at the K edge of two
distinct N sites permits to excite different sets of phonon modes. Cyanide CN
stretching mode is selected at the edge of the ordered N sites which are more
strongly connected to the BEDT-TTF molecules, while positionally disordered N
sites show multi-mode excitation. Combining measurements with calculations on
an anion plane cluster permits to estimate the sitedependent electron-phonon
coupling of the modes related to nitrogen excitation
L'occupation du site hivernal inuit Oakes Bay 1 (HeCg-08), Labrador, Canada : micromorphologie et zooarchéologie des dépotoirs
Les fouilles archéologiques du site Oakes Bay 1 à Dog Island, près de Nain (Nunatsiavut, Labrador) ont révélé l'existence d'un village hivernal inuit habité de la fin du 17ème à la fin du 18ème siècle. Cette occupation intervient pendant le Petit Âge glaciaire qui a engendré une importante variabilité sur l'étendue de la banquise côtière et donc sur la répartition des différentes populations de phoques de la région, chassées par les Inuits. L'objectif principal de cette étude est d'utiliser, de façon conjointe et inédite, la zooarchéologie et la micromorphologie, afin de proposer une fine chronologie d'occupation reliée à l'évolution des pratiques de subsistance et ce, pour deux maisons occupées au 18ème siècle. Les analyses montrent que l'économie de subsistance était constante et basée sur la chasse au phoque annelé au printemps sur la banquise côtière. Pour chaque maison, on observe une première phase d'occupation récurrente associée à des conditions environnementales prévisibles suivie d'une deuxième phase d'occupation plus sporadique probablement liée à des variations climatiques plus importantes. Cette étude montre que l'utilisation conjointe de la micromorphologie et de la zooarchéologie permet d'identifier différents marqueurs climatiques ainsi que des processus naturels et anthropiques responsables de la formation des dépotoirs
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