Photobook Design of Ancient Temples in Magelang Regency

Indonesia is a country with vast cultural diversity as well as high historical value, due to many historical sites found in various regions including Magelang Regency, Central Java. Beside the largest temple called Borobudur, there are also several others scattered on all places of Magelang. These temples are not yet exposed to the world, namely Lumbung, Asu, Pendem, Gunung Sari, Gunung Wukir, Losari, and any other temples. These temples become the cultural heritage with its own beauty and high historical values with different functions and objectives from each other. The existence of these temples need to be preserved because of its use for science, education, religion and any other aspects. Government Tourism Office have already made an effort in the publication through websites, brochures, and magazines. After analyzing the publication, there are shortcomings in the delivery of the publication through the media. Therefore, to provide historical information and documentation of the temples in Magelang as historical evidence there is a need for putting more effort. The survey was done by the author through questionnaire and interview, the author concludes to use photobook as media to convey the information about these temples and to use photos to document these temples. Keywords Photobook, Ancient Temples, Magelang Regenc

Stellar convective cores as dark matter probes

The recent detection of a convective core in a main-sequence solar-type star is used here to test particular models of dark matter (DM) particles, those with masses and scattering cross sections in the range of interest for the DM interpretation of the positive results in several DM direct detection experiments. If DM particles do not effectively self-annihilate after accumulating inside low-mass stars (e.g. in the asymmetric DM scenario) their conduction provides an efficient mechanism of energy transport in the stellar core. For main-sequence stars with masses between 1.1 and 1.3 Msun, this mechanism may lead to the suppression of the inner convective region expected to be present in standard stellar evolution theory. The asteroseismic analysis of the acoustic oscillations of a star can prove the presence/absence of such a convective core, as it was demonstrated for the first time with the Kepler field main-sequence solar-like pulsator, KIC 2009505. Studying this star we found that the asymmetric DM interpretation of the results in the CoGeNT experiment is incompatible with the confirmed presence of a small convective core in KIC 2009505.Comment: to appear on Physical Review

New X-ray Selected Pre-Main Sequence Members of the Serpens Molecular Cloud

The study of young stars no longer surrounded by disks can greatly add to our understanding of how protoplanetary disks evolve and planets form. We have used VLT/FLAMES optical spectroscopy to confirm the youth and membership of 19 new young diskless stars in the Serpens Molecular Cloud, identified at X-ray wavelengths. Spectral types, effective temperatures and stellar luminosities were determined using the optical spectra and optical/near-IR photometry. Stellar masses and ages were derived based on PMS evolutionary tracks. The results yield remarkable similarities for age and mass distribution between the diskless and disk-bearing stellar populations in Serpens. We discuss the important impli- cations these similarities may have on the standard picture of disk evolution.Comment: Accepted for publication at the Astronomical Journal. 21 pages, 7 figures and 5 table

Efek Kromium (Cr+3) Dengan Tepung Daun Jaloh Terhadap Laju Pertumbuhan Relatif Dan Kadar Proksimat Karbohidrat Pada Ikan Nila (Oreochromis Niloticus) Yang Mengalami Stres Panas

Penelitian ini bertujuan untuk mengetahui laju pertumbuhan relatif dan kadar proksimat karbohidrat pada ikan nila ( Oreochromis niloticus ) yang diberi stres panas dan tepung daun jaloh dengan kromium. Rancangan penelitian yang digunakan adalah rancangan acak lengkap (RAL) dengan pola faktorial,yang terdiri atas 2 faktor yakni pakan ( komersil, tepung daun jaloh, kromium + tepung daun jaloh) dan suhu (290C dan 350C) masing masing 5 kali ulangan. Data yang diperoleh dinalisis dengan analisis varian dua arah, yang dilanjutkan dengan uji Duncan. Pemberian pakan berpengaruh sangat siginifikan (P<0,01) dan terdapat interaksi yang signifikan (P < 0,05) antara suhu dan pakan terhadap laju pertumbuhan relatif ikan nila, tetapi faktor suhu tidak siginifikan. Pada Ikan nila yang diberikan pakan komersil + daun jaloh dan kromium memiliki laju pertumbuhan relatif yang paling tinggi dan kadar proksimat karbohidrat cenderung menurun dibandingkan perlakuan pakan lain pada suhu yang sama

The Physical Structure of Protoplanetary Disks: the Serpens Cluster Compared with Other Regions

Spectral energy distributions are presented for 94 young stars surrounded by disks in the Serpens Molecular Cloud, based on photometry and Spitzer IRS spectra. Taking a distance to the cloud of 415 pc rather than 259 pc, the distribution of ages is shifted to lower values, in the 1-3 Myr range, with a tail up to 10 Myr. The mass distribution spans 0.2-1.2 Msun, with median mass of 0.7 Msun. The distribution of fractional disk luminosities in Serpens resembles that of the young Taurus Molecular Cloud, with most disks consistent with optically thick, passively irradiated disks in a variety of disk geometries (Ldisk/Lstar ~ 0.1). In contrast, the distributions for the older Upper Scorpius and Eta Chamaeleontis clusters are dominated by optically thin lower luminosity disks (Ldisk/Lstar ~ 0.02). This evolution in fractional disk luminosities is concurrent with that of disk fractions. The actively accreting and non-accreting stars (based on Ha data) in Serpens show very similar distributions in fractional disk luminosities, differing only in the brighter tail dominated by strongly accreting stars. In contrast with a sample of Herbig Ae/Be stars, the T Tauri stars in Serpens do not have a clear separation in fractional disk luminosities for different disk geometries: both flared and flat disks present wider, overlapping distributions. This result is consistent with previous suggestions of a faster evolution for disks around Herbig Ae/Be stars. Furthermore, the results for the mineralogy of the dust in the disk surface do not show any correlation to either stellar and disk characteristics or mean cluster age in the 1-10 Myr range probed here. A possible explanation for the lack of correlation is that the processes affecting the dust within disks have short timescales, happening repeatedly, making it difficult to distinguish long lasting evolutionary effects. [abridged]Comment: ApJ in pres

Multiple bottlenecks sorting criterion at initial sequence in solving permutation flow shop scheduling problem

This paper proposes a heuristic that introduces the application of bottleneck-based concept at the beginning of an initial sequence determination with the objective of makespan minimization. Earlier studies found that the scheduling activity become complicated when dealing with machine, m greater than 2, known as non-deterministic polynomial-time hardness (NP-hard). To date, the Nawaz-Enscore-Ham (NEH) algorithm is still recognized as the best heuristic in solving makespan problem in scheduling environment. Thus, this study treated the NEH heuristic as the highest ranking and most suitable heuristic for evaluation purpose since it is the best performing heuristic in makespan minimization. This study used the bottleneck-based approach to identify the critical processing machine which led to high completion time. In this study, an experiment involving machines (m =4) and n-job (n = 6, 10, 15, 20) was simulated in Microsoft Excel Simple Programming to solve the permutation flowshop scheduling problem. The overall computational results demonstrated that the bottleneck machine M4 performed the best in minimizing the makespan for all data set of problems

Pengaruh Jumlah Ruas Dan Sudut Tanam Terhadap Pertumbuhan Dan Produksi Beberapa Varietas Ubijalar ( Ipomoea Batatas L.) Lamb

Penelitian ini bertujuan untuk mengetahui pengaruh jumlah ruas dan sudut tanam terhadap pertumbuhan dan produksi beberapa varietas ubijalar. Penelitian ini dilaksanakan dilahan masyarakat amplas, Sumatera Utara, Medan, Indonesia dengan ketinggian tempat + 25 m diatas permukaan laut, yang dilaksanakan pada bulan juni 2015 sampai dengan oktober 2015. Menggunakan Rancangan Acak Kelompok (RAK) dengan tiga faktor perlakuan yaitu : varietas (Antin-1 dan Sari), jumlah ruas ( jumlah ruas dua dan jumlah ruas tiga) dan sudut tanam (450 dan 00). Parameter yang diamati adalah pertambahan panjang tanaman, bobot umbi per sampel, jumlah umbi per sampel, panjang umbi per sampel, diameter umbi per sampel, bobot umbi per plot. Hasil penelitian menunjukkan bahwa varietas berpengaruh nyata terhadap pertambahan panjang tanaman, bobot umbi per sampel, jumlah umbi per sampel, panjang umbi per sampel, diameter umbi per sampel, bobot umbi per plot. Interkasi antara varietas dan ruas berpengaruh nyata pada pertambahan panjang tanaman. Interkasi antara varietas dan sudut tanam berpengaruh nyata pada pertambahan panjang tanaman Interkasi antara ruas dan sudut tanam berpengaruh nyata pada pertambahan panjang tanaman. Interkasi antara varietas, ruas dan sudut tanam berpengaruh nyata pada pertambahan panjang tanaman