Interplay of chemical pressure and hydrogen insertion effects in CeRhSn {\bf CeRhSn} from first principles

Investigations within the local spin density functional theory (LSDF) of the intermetallic hydride system ${\rm CeRhSnH_x}$ were carried out for discrete model compositions in the range $0.33 \leq x_H \leq 1.33$. The aim of this study is to assess the change of the cerium valence state in the neighborhood of the experimental hydride composition, ${\rm CeRhSnH_{0.8}}$. In agreement with experiment, the analyses of the electronic and magnetic structures and of the chemical bonding properties point to trivalent cerium for $1 \leq x_H \leq 1.33$. In contrast, for lower hydrogen amounts the hydride system stays in an intermediate-valent state for cerium, like in ${\rm CeRhSn}$. The influence of the insertion of hydrogen is addressed from both the volume expansion and chemical bonding effects. The latter are found to have the main influence on the change of Ce valence character. Spin polarized calculations point to a finite magnetic moment carried by the Ce $4f$ states; its magnitude increases with $x_H$ in the range $1 \leq x_H \leq 1.33$

Implikasi Revisi Undang-Undang Nomor 7 Tahun 1989 Tentang Peradilan Agama Dan Langkah Strategis Bagi Praktisi Hukum Pengadilan Agama

The Act No. 3 year 2006 revising toward The Act No. 7 year 1989 concerning the religious (Islamic) court constitutes recent development after one roof system of court in Indonesia. Revising the Act No. 7 year 1989 departs from Indonesian senate proposes and initiates. This revising actually implies human resources and human assessment of the religious court in Indonesia. The Religious court faces new jurisdiction, budget, education and training effectively, preparing syari\u27ah graduation, law resources, experts of economics law, those of Islamic economics including the banking world and the Syari\u27ah economics generally. Thus, it needs revitalizing the curricullum of Syari\u27ah economics either Strata 1 or graduation program (S2) in preparing human resources and human assessment of religious court in Indonesia

Aspek Hukum Pelestarian Lahan Basah pada Situs Ramsar di Indonesia (Studi terhadap Implementasi Konvensi Ramsar 1971 di Taman Nasional Tanjung Puting)

The Ramsar Convention have been transformed and implemented into Indonesian law. In practice, still found non-synchronized regulations that have not been able to implement the sustainable and wise use of wetlands. The prevention of peatland degradation must be holistic by involving the community and make intens socialization in order to create a sense of belonging and ownership. It is the purpose of this article to analyze the implementation of the Ramsar Convention 1971 on the peatland ecosystem protection and management at Tanjung Puting National Park, Central Kalimantan, and related to how Government efforts and policy to prevent the degradation of peatland since it was established as Ramsar Site in Indonesia.IntisariKetentuan-ketentuan dalam Konvensi Ramsar telah dilaksanakan dan ditransformasikan ke dalam peraturan Perundang-undangan di Indonesia. Dalam praktiknya, masih ditemukan peraturan-peraturan yang tidak sinkron, sehingga belum dapat melaksanakan komitmen pemanfaatan lahan basah secara bijaksana dan berkelanjutan. Upaya pencegahan degradasi gambut harus dilaksanakan secara holistik dengan mengikutsertakan masyarakat dan mengintensifkan sosialisasi agar tercipta sense of belonging, dan ownership. Penelitian ini bertujuan untuk menganalisis implementasi Konvensi Ramsar 1971 terkait perlindungan dan pengelolaan ekosistem gambut di Taman Nasional Tanjung Puting, Kalimantan Tengah. Sekaligus untuk melihat sejauh mana upaya Pemerintah dalam mencegah degradasi ekosistem gambut, sejak Tanjung Puting ditetapkan sebagai Situs Ramsar di Indonesia

Tantangan dan Peluang Indonesia dalam Pemberdayaan Masyarakat Lokal

Pembangunan Nasional termasuk di dalamnya pembangunan masyarakat lokal, dikonseptua-lisasikan sebagai proses konselidasi dan pengintegrasian kehidupan masyarakat dalam berbagai dimensi, baik politik, maupun sosial budaya dan ekonomi, kedalam satu unit yang utuh dan diperkuat dengan pemaksaan penyerangan pelembaga-an yang beresiko hapusnya keunikan lokal

Experimental determination of the state-dependent enhancement of the electron-positron momentum density in solids

The state-dependence of the enhancement of the electron-positron momentum density is investigated for some transition and simple metals (Cr, V, Ag and Al). Quantitative comparison with linearized muffin-tin orbital calculations of the corresponding quantity in the first Brillouin zone is shown to yield a measurement of the enhancement of the s, p and d states, independent of any parameterizations in terms of the electron density local to the positron. An empirical correction that can be applied to a first-principles state-dependent model is proposed that reproduces the measured state-dependence very well, yielding a general, predictive model for the enhancement of the momentum distribution of positron annihilation measurements, including those of angular correlation and coincidence Doppler broadening techniques

Current-Voltage Characteristics of Long-Channel Nanobundle Thin-Film Transistors: A Bottom-up Perspective

By generalizing the classical linear response theory of stick percolation to nonlinear regime, we find that the drain current of a Nanobundle Thin Film Transistor (NB-TFT) is described under a rather general set of conditions by a universal scaling formula ID = A/LS g(LS/LC, rho_S * LS * LS) f(VG, VD), where A is a technology-specific constant, g is function of geometrical factors like stick length (LS), channel length (LC), and stick density (rho_S) and f is a function of drain (VD) and gate (VG) biasing conditions. This scaling formula implies that the measurement of full I-V characteristics of a single NB-TFT is sufficient to predict the performance characteristics of any other transistor with arbitrary geometrical parameters and biasing conditions

Inelastic neutron scattering in random binary alloys : an augmented space approach

Combining the augmented space representation for phonons with a generalized version of Yonezawa-Matsubara diagrammatic technique, we have set up a formalism to seperate the coherent and incoherent part of the total intensity of thermal neutron scattering from disordered alloys. This is done exacly without taking any recourse to mean-field like approximation (as done previously). The formalism includes disorder in masses, force constants and scattering lengths. Implementation of the formalism to realistic situations is performed by an augmented space Block recursion which calculates entire Green matrix and self energy matrix which in turn is needed to evaluate the coherent and incoherent intensities. we apply the formalism to NiPd and NiPt alloys. Numerical results on coherent and incoherent scattering cross sections are presented along the highest symmetry directions. Finally the incoherent intensities are compared with the CPA and also with experiments.Comment: 18 pages, 13 figure