1,973,951 research outputs found
Boundary Effects in the One Dimensional Coulomb Gas
We use the functional integral technique of Edwards and Lenard to solve the
statistical mechanics of a one dimensional Coulomb gas with boundary
interactions leading to surface charging. The theory examined is a one
dimensional model for a soap film. Finite size effects and the phenomenon of
charge regulation are studied. We also discuss the pressure of disjunction for
such a film. Even in the absence of boundary potentials we find that the
presence of a surface affects the physics in finite systems. In general we find
that in the presence of a boundary potential the long distance disjoining
pressure is positive but may become negative at closer interplane separations.
This is in accordance with the attractive forces seen at close separations in
colloidal and soap film experiments and with three dimensional calculations
beyond mean field. Finally our exact results are compared with the predictions
of the corresponding Poisson-Boltzmann theory which is often used in the
context of colloidal and thin liquid film systems.Comment: 28 pages, LATEX2e, 11 figures, uses styles[12pt] resubmission because
of minor corrections to tex
The Schrodinger-like Equation for a Nonrelativistic Electron in a Photon Field of Arbitrary Intensity
The ordinary Schrodinger equation with minimal coupling for a nonrelativistic
electron interacting with a single-mode photon field is not satisfied by the
nonrelativistic limit of the exact solutions to the corresponding Dirac
equation. A Schrodinger-like equation valid for arbitrary photon intensity is
derived from the Dirac equation without the weak-field assumption. The
"eigenvalue" in the new equation is an operator in a Cartan subalgebra. An
approximation consistent with the nonrelativistic energy level derived from its
relativistic value replaces the "eigenvalue" operator by an ordinary number,
recovering the ordinary Schrodinger eigenvalue equation used in the formal
scattering formalism. The Schrodinger-like equation for the multimode case is
also presented.Comment: Tex file, 13 pages, no figur
KEDUDUKAN AHLI WARIS NON MUSLIM DALAM KEWARISAN ISLAM (STUDI KASUS PUTUSAN NOMOR : 1578/PDT.G/2010/PA.JT)
Salah satu pembahasan dalam ilmu mawaris adalah pembahasan
tentang penghalang dalam kewarisan. Penghalang dalam kewarisan ada
tiga penyebabnya yaitu pembunuhan yang disengaja, beda agama dan
perbudakan. Beda agama adalah apabila antara ahli waris dan pewaris
salah satunya beragama Islam dan yang lain tidak beragama Islam.
Tentang perbedaan agama antara pewaris dan ahli waris, dapat
menggugurkan hak seseorang untuk mewarisi harta peninggalan.
Rumusan masalah dalam penelitian ini ialah bagaimana kedudukan
ahli waris non muslim dalam kewarisan Islam dan apakah pertimbangan
Hakim dalam putusan nomor : 1578/Pdt.G/2010/PA.JT telah sesuai
dengan hukum Islam serta Kompilasi Hukum Islam.
Metode pendekatan yang digunakan peneliti adalah library
research (yurudis normatif). Yaitu suatu pendekatan alternatif yang
menganalisa bahan-bahan pustaka di bidang hukum yang norma-
normanya tertulis dan spesifikasi penelitian deskriptis analitis, yaitu
dengan menggunakan metode dan teori ilmu-ilmu sosial tentang hukum
untuk membantu peneliti dalam melakukan analisis.
Hasil dari penelitian ini diperoleh kesimpulan yakni : (1) Hukum
Islam menegaskan prinsip dalam kewarisan bahwa ahli waris non muslim
tidak mempunyai kedudukan untuk mewarisi harta dari pewaris muslim,
sebagaimana yang telah diatur dalam Al-Qur’an, Hadits serta Kompilasi
Hukum Islam. (2) Dalam pertimbangan hakim Pengadilan Agama Jakarta
Timur dianggap telah terjadi kekeliruan mengenai pemahaman tentang
kompetensi absolut Pengadilan Negeri Jakarta Timur yang menetapkan
masalah kewarisan Islam, karena pada dasarnya yang mempunyai
kewenangan absolut ialah Pengadilan Agama Jakarta Timur. Hal tersebut
menimbulkan dasar penolakan hakim Pengadilan Agama menolak
gugatan perkara ahli waris, yang menyebabkan ahli waris non muslim
memperoleh kembali hak kewarisannya. Hasil dari putusan tersebut
ditinjau secara sudut pandang Islam sangat bertentangan dengan Al-
Qur’an dan Hadits serta ketentuan menurut perspektif Kompilasi Hukum
Islam, bahwa mengenai sistem kewarisan Islam tidak mengakui ahli waris
non muslim sebagai ahli waris dari pewaris muslim
Bell's inequality and the coincidence-time loophole
This paper analyzes effects of time-dependence in the Bell inequality. A
generalized inequality is derived for the case when coincidence and
non-coincidence [and hence whether or not a pair contributes to the actual
data] is controlled by timing that depends on the detector settings. Needless
to say, this inequality is violated by quantum mechanics and could be violated
by experimental data provided that the loss of measurement pairs through
failure of coincidence is small enough, but the quantitative bound is more
restrictive in this case than in the previously analyzed "efficiency loophole."Comment: revtex4, 3 figures, v2: epl document class, reformatted w slight
change
Path integrals for stiff polymers applied to membrane physics
Path integrals similar to those describing stiff polymers arise in the
Helfrich model for membranes. We show how these types of path integrals can be
evaluated and apply our results to study the thermodynamics of a minority
stripe phase in a bulk membrane. The fluctuation induced contribution to the
line tension between the stripe and the bulk phase is computed, as well as the
effective interaction between the two phases in the tensionless case where the
two phases have differing bending rigidities.Comment: 11 pages RevTex, 4 figure
Studies on the Accumulation of Chromium in Fenugreek
Studying Cr uptake by Fenugreek, we note that the maximum concentration of Cr takes place in the shells of the pods followed by leaves, stems and seeds in that order. Interestingly, applied higher doses of Cr does not increase accumulation of Cr in the stems, rather Cr content in the stems levels off. However, the maximum dispersal/distribution of Cr taken up is in the leaves
Chromium uptake by Fenugreek
Fenugreek (Trigonella foenum- graecum) is both herb (leaves) and a spice (seed) belonging to the family Fabaceae. Fenugreek leaves and seeds are used in the cuisine of India. Fenugreek also has medicinal value. Fenugreek seeds are known to reduce serum glucose and improve glucose tolerance and hence are prescribed to diabetic patients. In the recent past supplemental Chromium is being prescribed to diabetic patients to activate (increased- insulin binding, insulin receptor number, insulin receptor phosphorylation) insulin. Plants can uptake substantial quantities of toxic metals from contaminated soils if these soils are well ameliorated. 

It is then probable that the medicinal efficacy of Fenugreek in the case of diabetes could be enhanced if it takes up chromium from the soil. Preliminary studies are being conducted to note the chromium uptake by Fenugreek from soils which are applied with potassium dichromate
The Study of the Heisenberg-Euler Lagrangian and Some of its Applications
The Heisenberg-Euler Lagrangian is not only a topic of fundamental interest,
but also has a rich variety of diverse applications in astrophysics, nonlinear
optics and elementary particle physics etc. We discuss the series
representation of this Lagrangian and a few of its applications in this study.
[In an appendix, we discuss issues related to the renormalization - and the
renormalization-group invariance - of the Heisenberg-Euler Lagrangian and its
two-loop generalization.]Comment: 12 pages, LaTeX; Proceedings of the MRST-2003 conference; talk given
by S. R. Vallur
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